CN101484560B - Refrigerator oil, compressor oil composition, hydraulic fluid composition, metalworking fluid composition, heat treatment oil composition, lubricant composition for machine tool and lubricant composit - Google Patents

Abstract

Disclosed are a refrigerator oil, a compressor oil composition, a hydraulic fluid composition, a metalworking fluid composition, a heat treatment oil composition, a lubricant composition for machine tools and a lubricant composition, each containing a lubricant base oil having a %CA of not more than 2, a %CP/%CN of not less than 6 and an iodine value of not more than 2.5.

Description

Refrigerator oil, compressor oil composition, hydraulic oil composition, Metalworking fluid composition, heat-treatment oil composition, work mechanism lubricating oil composition, lubricating oil composition

Technical field

The present invention relates to refrigerator oil, compressor oil composition, hydraulic oil composition, Metalworking fluid composition, heat-treatment oil composition, work mechanism lubricating oil composition and lubricating oil composition.

Background technology

In the field of so-called Industrial Oil, as mentioned below, according to its purposes, require lubricating oil to have various characteristics.

For example in the field of refrigerator oil, in recent years because the problem of depletion of the ozone layer, the CFC (Chlorofluorocarbons (CFCs)) and the HCFC (hydrochlorofluorocarsolvent) that used as the cooling agent of freezing air conditioner become restricted object in the past, will change the HFC (hydrofluorocarbon) that forms by them at present and use as cooling agent.

In addition, for above-mentioned HFC cooling agent, also there is the high problem of ability that makes greenhouse effects of the earth.Therefore, as the replacement cooling agent of these freon class cooling agent, people are also at research carbonic acid gas (CO ₂) use of the natural refrigerant such as cooling agent or hydro carbons cooling agent.

As the HFC refrigerator oil for refrigerant, past uses always that PAG (polyalkylene glycol), POE (polyol ester), PVE (polyvinyl ether) etc. and HFC cooling agent mixes contains oxygen class synthetic oil, and these contain oxygen class synthetic oil is respectively having relative merits aspect the characteristic of any refrigerator oil.On the other hand, the alkylbenzene such as branch chain type alkyl benzene and HFC cooling agent are immiscible, but have the feature (reference example such as following patent documentation 1,2) that wear resistance and rubbing characteristics are better than containing oxygen class synthetic oil in the presence of cooling agent.

In addition, as natural refrigerator oil for refrigerant, someone proposes to use the scheme of various refrigerator oils.For example, as the carbon dioxide refrigerant refrigerator oil, the refrigerator oil that uses the hydrocarbon base oils such as alkylbenzene or poly-alpha olefins is disclosed in the following patent documentation 3; The refrigerator oil that uses the ethers base oils such as polyalkylene glycol or polyvingl ether is disclosed in the following patent documentation 4; The refrigerator oil that uses ester class base oil is disclosed in the following patent documentation 5～7.

In addition, for the lubricating oil that uses in the gas compressors such as rotary gas compressor (compressor oil), owing to recycling and inevitable and the reasons such as high temperature compressed gas contacts, requirement has good thermal oxidation stability.Therefore, in general, the compressor oil that past uses the amine antioxidantss such as phenol antioxidant such as cooperating 2,6 ditertiary butyl p cresol at highly refined mineral oils base oil or with the hydride of poly-alpha olefins class in as the synthetic class hydrocarbon ils of representative or phenyl-a-naphthylamine to form always.

Yet, for resembling the lubricating oil of paying attention to thermal oxidation stability at high temperature the rotary gas compression machine oil, in order to obtain sufficient resistance to thermooxidation, not only to add in a large number antioxidant, and also have the easily problem of sludge of antioxidant itself this moment.In case generation sludge, then cause heating or damage of the bearing on the bearing owing to the rotator that is attached to rotary gas compressor, and then, often easily cause the obstruction of the mist of oil recovering mechanism (mist eliminator) that pressurized gas is separated with mist of oil, will cause inevitably equipment to shut down like this.

Therefore, someone studies the thermal oxidation stability that can take into account lubricating oil and the additive formulations of anti-sludge, proposes to use the scheme (reference example such as patent documentation 8) to specific antioxidants such as branched-chain alkyl phenyl-alpha-naphthylamines.

In addition, in the pump that consists of hydraulic circuit, control valve, hydro-cylinder etc., exist and follow metal-metal to contact or the contacted sliding position of metal to rubber (resin).Hydraulic oil for having as the lubricant of this sliding position requires to have good wear resistance and rubbing characteristics.

In addition, in case follow hydraulic oil deteriorated or abrasion powder generation and produce sludge, the sliding resistance that will cause above-mentioned sliding position increases, and then cause that the flowrate control valve in the hydraulic circuit is inaccessible, therefore, except requiring hydraulic oil to have wear resistance and the rubbing characteristics, also to have thermal oxidation stability.

Therefore, for hydraulic oil in the past, in order to tackle above-mentioned requirement, people have done various researchs.For example, thermal oxidation stability in order to ensure hydraulic oil, as lubricant base, use hydrorefined mineral oils, hydrocracking mineral oil equal altitudes refined mineral oil, and then use the synthetic class hydrocarbon ils such as poly-alpha olefins etc., and then, seek the further raising of thermal oxidation stability by in these lubricant bases, adding phenols or amine antioxidants.In addition, consider from the viewpoint that improves wear resistance, as anti-wear agent, use the zinc class anti-wear agent such as zinc dithiophosphate (ZnDTP) or phosphoric acid ester and amine salt thereof, thiophosphatephosphorothioate, the β-non-zinc class anti-wear agents such as dithio phosphorylated phenylpropionic acid compound.In addition, consider from the viewpoint that improves rubbing characteristics, seek the reduction (reference example such as patent documentation 9～12) of the frictional coefficient of slipping plane by in hydraulic oil, cooperating low friction compound.

In addition, in the field of metal processing, the past, lubricated for the working position that makes metal-made workpiece (machined object), use metalworking fluid always.The characteristic (hereinafter referred to as " processibility ") of the condition of surface that requires this metalworking fluid to reach by good lubricating to reduce operating force, boost productivity, improve workpiece (such as the gloss after the calendering etc.) etc.

Therefore, as metalworking fluid in the past, in order to improve processibility, normal operation is combined with the metalworking fluid (reference example such as patent documentation 13,14) of the additives such as oiliness improver (oiliness improver), extreme pressure agent.

In addition, in the past, in make metal-modified thermal treatment (quenching etc.) by heating and cooling, use heat-treated oil.

When quenching, its process of cooling is usually as follows to the workpiece such as steel (object being treated) for the use heat-treated oil.

At first, in case workpiece is put in the heat-treated oil, workpiece will be surrounded by the steam of oil or its decomposition gas.In this stage, owing to the barriering effect of vapor film is difficult to conduct heat, so speed of cooling is slow.

Secondly, the surface temperature of workpiece reduces gradually, in case reach below the temperature of regulation, then causes the nucleate boiling of oil.This stage is called boiling stage, demonstrates great cooling performance.Be explained, in JIS K 2242 (heat-treated oil), the vapor film of oil breaks and the temperature that begins nucleate boiling is called as " representative temperature ", in order to obtain enough hardness, the heat-treated oil that the expected characteristics temperature is high namely arrives short heat-treated oil of needed time of representative temperature.

Approach the boiling point of oil along with workpiece surface temperature, boiling dies down, in case surpass boiling point, then boiling stops, and only carries out because the slowly cooling that convection current causes.The speed of cooling in this stage depends on the thermal treatment oil viscosity, and the thermal treatment oil viscosity is lower, and the expression cooling is better.Therefore, in JIS K 2242 (heat-treated oil), the kinematic viscosity during 40 ℃ of recommendations is at 30mm ²The heat-treated oil that/s is following, in addition, particularly when take the poor steel of hardenability during as the processing object, (for example, the kinematic viscosity 40 ℃ the time is at 26mm for the heat-treated oil that recommendation viscosity is lower ²The heat-treated oil that/s is following).

As mentioned above, the past is as the heat-treated oil that is used for obtaining enough hardness, the heat-treated oil that the preferred characteristics temperature is high and viscosity is low.In addition, if just reduce simply the mineral oil viscosity as the base material use of heat-treated oil, then its representative temperature has also reduced, therefore, for heat-treated oil in the past, people are studying the method (reference example such as patent documentation 15) that improves representative temperature by the cooling improving agents such as multipolymer that add ethene and alpha-olefin in the low mineral oil of viscosity.In the field of work mechanism, require to improve the working accuracy of component, correspondingly, require to improve the precision that determines the position in the slide guide rail.The precision and the slide guide rail that determine the position in the slide guide rail have close relationship with oily performance, except requiring low friction (being that frictional coefficient is little), also require stick-slip reduction property.And then, for work mechanism lubricating oil, also require it to have high long-lasting and maintenance-free performance.

Therefore, for work mechanism lubricating oil in the past, in order to tackle above-mentioned requirement, people have carried out various researchs.For example, in order to obtain good rubbing characteristics, the sulphur compounds such as the phosphorus compounds such as use phosphoric acid ester and amine compound thereof, sulfuration grease, sulfuration ester etc. are as additive (reference example such as following patent documentation 16～20).

In addition, in order to ensure the thermal oxidation stability of work mechanism with lubricating oil, as lubricant base, except solvent treatment mineral oil, also can use hydrorefined mineral oils, hydrocracking mineral oil equal altitudes refined mineral oil, and then also can use (reference example such as patent documentations 21～24) such as synthetic class hydrocarbon ils such as poly-alpha olefinss.

In addition, the lubricating oil that in steam turbine, internal combustion turbine, rotary gas compressor, hydraulic machinery etc., uses, owing to be at high temperature to use, and be to recycle, therefore, can the withstand prolonged use be important.Especially, aforesaid device or machinery have the tendency of the very strong insoluble composition (sludge) that is subject to separating out in lubricating oil infringement.For example, in case the sludge composition of separating out is attached on the bearing of rotator, will become the reason of heating, and the poorest situation also can cause the damage of bearing.In addition, in case sludge is separated out, the problem in the runnings such as filter stoppage that arrange in the circulation line will appear causing.And then, when sludge is deposited in the control valve place and causes that the work of Controlling System is bad, will cause inevitably device to shut down.Therefore, for the lubricating oil that uses in this field, except thermal oxidation stability, the characteristic (hereinafter referred to as " sludge suppresses (preventing) property ") that also requires sludge to be difficult for separating out.

Therefore, for the lubricating oil in the past that in steam turbine, internal combustion turbine, rotary gas compressor, hydraulic efficiency installation etc., uses, by with highly refined mineral oil or the synthetic class hydrocarbon ils take poly-alpha-olefin hydrogen-like compound as representative etc. as base oil, cooperate antioxidant, seek to improve its thermal oxidation stability and sludge inhibition (reference example such as following patent documentation 25).[ Patent Document 1 ] JP-A No. 8-27478 [ Patent Document 2 ] JP-A No. 8-27479 [ Patent Document 3 ] JP-A No. 10-46168 [ Patent Document 4 ] JP-A No. 10-46169 [Patent Document 5 ] Laid- open Publication No. 2000-104084 [ patent Document 6 ] Laid- open Publication No. 2000-169868 [ patent Document 7 ] Laid- open Publication No. 2000-169869 [ patent Document 8 ] JP-A No. 7-252489 [ patent Document 9 ] Unexamined Patent Publication No. 4-68082 [ patent Document 10 ] JP 2000-303086 [Patent Document 11 ] JP 2002-129180 [Patent Document 12 ] JP 2002-129181 [Patent Document 13 ] JP Publication No. Hei 10-273685 [ patent Document 14 ] JP 2003-165994 [Patent Document 15 ] JP 5-279730 [Patent Document 16 ] JP-A No. 57-67693 [ patent Document 17 ] JP Publication No. Sho 51-74005 [ patent Document 18 ] JP-A No. 8-134488 [ patent Document 19 ] JP-A No. 8-209175 [ patent Document 20 ] JP-A No. 11-209775 [ patent Document 21 ] JP-A- 4 -68 082 [Patent Document 22 ] Laid- open Publication No. 2000-303086 [ patent Document 23 ] JP 2002-129180 [Patent Document 24 ] JP 2002-129181 [Patent Document 25 ] JP Hei 7-252489 No.

Summary of the invention

The problem that invention will solve

Yet above-mentioned lubricating oil in the past is in leeway that following each side all is improved.

For example, the branch chain type alkyl benzene that uses in the HFC refrigerator oil for refrigerant in the past is owing to reasons such as shortage Biodegradables, and demand in the world reduces day by day, and the consequent is that feed rate sharply reduces, and this is present present situation.Therefore, people thirst for developing the refrigerator oil that replaces alkylbenzene.

In addition, because the solvability of hydro carbons cooling agent in refrigerator oil is good, and, itself viscosity of carbon dioxide refrigerant is little, therefore, in a single day these cooling agent are dissolved in the above-mentioned refrigerator oil in the past, will reduce largely the refrigerator oil viscosity, therefore can not guarantee virtual viscosity, thereby make the easily wearing and tearing that become such as slide unit of coolant compressor.Particularly in recent years, in the field of freezing air conditioner, consider from the viewpoint of energy-saving, requirement is stirred resistance or the favourable low viscous refrigerator oil of pipe resistance to reducing, but in this occasion that makes the refrigerator oil lowering viscousity, guarantee that virtual viscosity just becomes more difficult, becoming of wearing and tearing is more remarkable.

Be explained, as the means of improving the refrigerator oil oilness, can consider to add the anti-wear agents such as extreme pressure agent in the refrigerator oil method, but in order to obtain enough wear resistancies, anti-wear agent must be added in a large number to a certain extent, thereby the stability of refrigerator oil might be damaged.In addition, the wear resistance raising effect of being brought by extreme pressure agent is owing to the epithelium that forms on the slide unit surface from extreme pressure agent, but because the formation of described epithelium causes the frictional coefficient between the slide unit to improve, therefore, consider it is undesirable from the viewpoint of energy-saving.

In addition, as other means of improving the refrigerator oil oilness, can consider the synthetic class base oils such as poly-alpha olefins that use viscosity index high, reduce as far as possible the method for the degree that the virtual viscosity of refrigerator oil reduces.Yet, even if in the occasion of using this synthetic class base oil, in the presence of hydro carbons cooling agent or carbon dioxide refrigerant, be difficult to obtain enough wear resistancies.In addition, because the price of the synthetic class base oils such as poly-alpha olefins is high, therefore, its use causes rising as the cost of freezing air conditioner integral body.

In addition, in the occasion of compressor oil, in recent years, follow to reduce the device miniaturization that circulation oil mass etc. is carried out for purpose, the thermal load of compressor oil increases day by day, and such as record in the above-mentioned patent documentation 8 like that, only to improve the effect of characteristic of compressor oil limited by changing additive formulations.

In addition, in the occasion of hydraulic oil, in recent years, the hydraulic system is high performance day by day, for example, in order to carry out high-speed, high-accuracy control, utilize the valve such as guiding valve to control the situation of the flow of hydraulic efficiency system, direction etc. and that the situation of servo-valve is installed is a lot.In case produce sludge in the hydraulic oil, the performance of this guiding valve or servo-valve will decrease.Therefore, require further to improve wear resistance and the thermal oxidation stability of hydraulic oil.

In addition, amendment according to energy conservation, specify specified factory in the factory for energy management, the energy is cut down becomes necessary project, must carry out according to annual numerical target energy-conservationly, the reduction of the power consumption of the run motor in the factory in the widely used hydraulic work device becomes important problem.Consider from the viewpoint of this energy saving, the friction resistance that reduces sliding position is effectively, therefore, requires further to improve the rubbing characteristics of hydraulic oil.

But, even if above-mentioned hydraulic oil in the past, employed lubricant base also has room for improvement at aspects such as thermal oxidation stability, rubbing characteristics, viscosity-temperature profiles, and, improve effect by the characteristic that cooperates various additives to bring limited, therefore, as the technical scheme of the above-mentioned whole requirements of reply, may not necessarily be satisfactory.

In addition, in the occasion of metalworking fluid, in recent years, wish further to improve working accuracy and working (machining) efficiency, for the metalworking fluid in the past of record in the above-mentioned patent documentation 13,14, can not realize sufficient processibility.

In addition, as the means of the processibility that improves metalworking fluid, can consider to increase by the viscosity that improves metalworking fluid the method for the ratio in the little hydrodynamic lubrication zone of frictional coefficient.Yet, because the optimum thickness of the oil film that is formed by metalworking fluid is with the kind of metal processing or processing conditions and different, therefore, when the viscosity of raising metalworking fluid, usually can causes the off-target oil film thickness, thereby can not realize sufficient processibility.In addition, the high viscosityization of metalworking fluid also has such problem, that is, in being in the oil removing operation of manufacturing procedure back segment, oil content is difficult to remove from machined object (workpiece).

In addition, although can improve to a certain extent processibility by increasing the use levels of additive in metalworking fluid such as oiliness improver, extreme pressure agent, but it is naturally limited that the processibility that adopts the method to bring improves effect, also may not easily obtain sufficient processibility.In addition, in the occasion that increases these additives, in being in the oil removing operation of manufacturing procedure back segment, oil content also is difficult to remove from machined object (workpiece).In addition, the use of a large amount of additives can cause cost to increase and operating environment worsens (foul smell etc. occurs).And then, except the processing conditions harshnessization, from efficent use of resources, reduce waste oil, the viewpoint that reduces metalworking fluid user's cost etc. considers, require metalworking fluid to have the thermal oxidation stability of can long term maintenance stable proterties, but the content that increases oiliness improver or extreme pressure agent also can become the reason of the thermal oxidation stability reduction of metalworking fluid.

In addition, in the occasion of heat-treated oil, even if the heat-treated oil of record in the above-mentioned patent documentation 15, object being treated (workpiece) distortion (strain) when quenching under the high oil temperature in order to be suppressed at still has room for improvement.Be explained, when the speed of cooling in the martensitic transformation temperature zone of metal is too fast, this strain occur easily, in addition, the mineral oil that uses in heat-treated oil in the past generally demonstrates the faster tendency of speed of cooling of lower this temperature province of viscosity.

In addition, in the occasion of work mechanism with lubricating oil, even if the work mechanism lubricating oil in the past of above-mentioned patent documentation 21～24 records aspect rubbing characteristics and stick-slip minimizing property, still has room for improvement.In addition, for above-mentioned work mechanism lubricating oil in the past, consider talkatively to have sufficient thermal oxidation stability from long-lasting viewpoint, wish its further improvement.

In addition, for generating set in recent years, in order to improve generating efficiency, to effectively utilize energy, the internal combustion turbine that the combustion gases of high temperature are used as working medium or carry out the co-operation of multiple devices by internal combustion turbine and steam turbine being made up the combined cycle power plant that forms etc.Although the burning gas temperature of the internal combustion turbine that uses in the cause power plant for emergency in the 1980's is about 1,100 ℃, in recent years, along with the thermotolerance of the constituent material of internal combustion turbine improves, high temperature proceeds to about 1,500 ℃.In addition, about rotary gas compressor, although itself have the contacted mechanism of the pressurized gas of lubricating oil and high temperature, in recent years, follow the miniaturization of compressor, to the also significantly increase of thermal load of lubricating oil.

As mentioned above, the working conditions of the lubricating oil of above-mentioned equipment or machinery becomes strictly day by day, and the lubricating oil in the past for record in the above-mentioned patent documentation 25 is difficult to realize sufficient thermal oxidation stability and sludge inhibition.

In addition, method as the thermal oxidation stability that improves the lubricating oil that uses in steam turbine, internal combustion turbine, rotary gas compressor, the hydraulic efficiency installation etc., can consider to increase the consumption of antioxidant, but this moment, the sludge of antioxidant itself changes into and is problem, therefore, can not get taking into account the basic solution countermeasure of thermal oxidation stability and sludge inhibition.Especially, when the synthetic class hydrocarbon ils such as hydrogenation products with the poly-alpha-olefin class were used as base oil, this base oil just was difficult to therefore additive or the dissolving of its oxidative degradation thing, are not wished to increase the consumption of antioxidant originally.

Therefore, the object of the invention is to, a class useful lubricating oil or lubricating oil composition in the field of Industrial Oil is provided.

Especially, the object of the invention is to, provide a class in the presence of the cooling agent such as HFC cooling agent, hydro carbons cooling agent, carbon dioxide refrigerant, can bring into play good wear resistance and rubbing characteristics, can realize improving the long-term reliability of freezing air conditioner and the refrigerator oil of energy-saving.

In addition, the object of the invention is to, even if provide a kind of when at high temperature using, also can realize the compressor oil composition of thermal oxidation stability and anti-sludge high-levelly.

In addition, the object of the invention is to, provide a kind of can high level and balance realize well the over-all properties of wear resistance, rubbing characteristics, thermal oxidation stability and viscosity-temperature profile, and aspect the high performance of hydraulic system and energy-saving effective hydraulic oil composition.

In addition, the object of the invention is to, even provide a kind of consumption that does not improve viscosity or do not increase additive also can access good processibility, and the good metalworking fluid of removability from the workpiece after the processing.

In addition, the object of the invention is to, provide a kind of and when under high oil temperature, quenching, can realize sufficient hardness, and can fully suppress the heat-treated oil of strain.

In addition, the object of the invention is to, provide a kind of can high level and balance realizes that well rubbing characteristics, stick-slip degree reduce property and thermal oxidation stability, and aspect the high performance of work mechanism effective work mechanism lubricating oil composition.

In addition, the object of the invention is to, provide a kind of high level and balance is taken into account thermal oxidation stability and sludge inhibition well, and when the lubricating oil as steam turbine, internal combustion turbine, rotary gas compressor, hydraulic efficiency installation etc. uses, can realize the lubricating oil composition of abundant long-actingization.

Be used for solving the means of problem

In order to solve above-mentioned problem, the invention provides a kind of refrigerator oil, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is the lubricant base below 2.5.

About lubricant base contained in the refrigerator oil of the present invention, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so the wear resistance of itself, rubbing characteristics and viscosity-temperature profile are good.In addition, according to the refrigerator oil of the present invention that contains this lubricant base, in the presence of the cooling agent such as HFC cooling agent, hydro carbons cooling agent, carbon dioxide refrigerant, can fully suppress the wearing and tearing of the slide unit etc. of coolant compressor, on the other hand, can fully reduce frictional coefficient between the slide unit and the stirring resistance of refrigerator oil.And then, because above-mentioned lubricant base has sufficient thermal oxidation stability, therefore, can obtain for a long time and stably above-mentioned wear resistance and improve effect, frictional coefficient reduction effect and stir the low effect of resistance drop.Therefore, by refrigerator oil of the present invention be used for being used the freezing air conditioner of HFC cooling agent, hydro carbons cooling agent, carbon dioxide refrigerant etc., can realize the raising of long-term reliability of freezing air conditioner and energy-saving the two.

In addition, the invention provides a kind of compressor oil composition, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is lubricant base, antioxidant and antimist agent below 2.5.

About lubricant base contained in the compressor oil composition of the present invention, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so itself have good thermal oxidation stability, and viscosity-temperature profile is also good.And then this lubricant base can fully stably dissolve and keep the additives such as antioxidant and antimist agent, can bring into play with higher level again the function of additive.Therefore, according to the present invention, even if can realize a kind of when at high temperature using, also can with high level realize thermal oxidation stability and anti-sludge the two, and also good compressor oil composition of oil mist prevention and stopping property.

In the compressor oil composition of the invention described above, the content of antioxidant take total composition as benchmark, is preferably 0.02～5 quality %.By antioxidant is in the above-mentioned scope, can be with higher level balance realize well thermal oxidation stability and anti-sludge under the high temperature.

In addition, the invention provides a kind of hydraulic oil composition, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is the lubricant base below 2.5 and contain phosphorus and/or sulphur as the compound of Constitution Elements.

Contained lubricant base in the hydraulic oil composition of the present embodiment, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so the thermal oxidation stability of itself, viscosity-temperature profile and rubbing characteristics are good.And then this lubricant base can stably dissolve and keep this additive when being combined with additive, can bring into play with higher level again the function of this additive.Therefore, hydraulic oil composition according to the present embodiment, by this lubricant base with good characteristic with contain phosphorus and/or the sulphur synergy as the compound of Constitution Elements, the over-all properties of wear resistance, rubbing characteristics, thermal oxidation stability and viscosity-temperature profile can be realized well with high level and balance, and high performance and the energy-saving of hydraulic system can be realized.

In addition, the invention provides a kind of Metalworking fluid composition, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number be below 2.5 lubricant base and from ester, alcohol, carboxylic acid and contain phosphorus and/or the compound of sulphur as Constitution Elements at least a kind of lubricity improver selecting.

Contained lubricant base in the Metalworking fluid composition of the present embodiment, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so the rubbing characteristics of itself is good, in addition, in the hydrodynamic lubrication field, can reduce shearing resistance, fully prevents breaking of oil film.In addition, this lubricant base be combined with from ester, alcohol, carboxylic acid and contain phosphorus and/or the compound of sulphur as Constitution Elements the occasion of at least a kind of lubricity improver selecting, can stably dissolve and keep this lubricity improver, can improve effect by the oilness in the boundary lubrication field that this lubricity improver causes with the higher level performance again.And then this lubricant base is owing to having a sufficient thermal oxidation stability, therefore by its use, and can the above-mentioned good oilness of long term maintenance.

Therefore, the Metalworking fluid composition of the present embodiment can obtain good processibility steadily in the long term.And then, in the Metalworking fluid composition of the present embodiment, in order to obtain above-mentioned processibility and long term maintenance thereof, needn't improve the consumption of viscosity or increase additive, therefore, the Metalworking fluid composition of the present embodiment also is good aspect the removal from the workpiece after the processing.

The invention provides a kind of heat-treatment oil composition, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is lubricant base and cooling improving agent below 2.5.

Contained lubricant base in the heat-treatment oil composition of the invention described above, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so itself have good viscosity-temperature profile, and have sufficient thermal oxidation stability.In addition, this lubricant base can fully stably dissolve and keep the additives such as cooling improving agent, can bring into play with higher level again the function of this additive.Therefore, the heat-treatment oil composition of the present invention that is consisted of by above-mentioned lubricant base and cooling improving agent, can realize sufficient cooling at the boiling stage that quenches, simultaneously, can fully be suppressed at the too fast phenomenon of speed of cooling in the Martensite temperature zone, its result can stably obtain the metal works that has sufficient hardness and should tail off.

In addition, contained cooling improving agent in the heat-treatment oil composition of the present invention is preferably at least a kind that selects from multipolymer, pitch and the insoluble composition thereof of the alpha-olefin of ethene and carbon number 3～20 are removed the alkali earth metal salt of thing and alkyl salicylate.By use in these cooling improving agents more than a kind or 2 kinds, can realize above-mentioned effect of the present invention with higher level.

In addition, the invention provides a kind of work mechanism lubricating oil composition, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is the lubricant base below 2.5 and contain phosphorus and/or sulphur as the compound of Constitution Elements.

Work mechanism of the present invention contained lubricant base in the lubricating oil composition, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so the thermal oxidation stability of itself and rubbing characteristics are good.And then this lubricant base can stably dissolve and keep this additive in the occasion that cooperates additive, can bring into play with higher level again the function of this additive.Therefore, work mechanism lubricating oil composition of the present invention, by this lubricant base with good characteristic with contain phosphorus and/or the sulphur synergy as the compound of Constitution Elements, the over-all properties of rubbing characteristics, stick-slip reduction property and thermal oxidation stability can be realized well with high level and balance, and the high performance of work mechanism can be realized.

In addition, the invention provides a kind of lubricating oil composition, it is characterized in that, contain %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number be below 2.5 lubricant base and not sulfur-bearing be antioxidant as the ashless of Constitution Elements, ashless is the content of antioxidant, take total composition as benchmark, is 0.3～5 quality %.

Contained lubricant base in the lubricating oil composition of the invention described above, its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, so the thermal oxidation stability of itself is good.And then this lubricant base is cooperating ashlessly when being the additive such as antioxidant, can stably dissolve and keep this additive, can bring into play its function with higher level again.In addition, contain not in this lubricant base with good characteristic by making that sulfur-bearing makes its content satisfy above-mentioned condition as the ashless antioxidant of Constitution Elements, just can take into account well thermal oxidation stability and sludge inhibition with high level and balance.Therefore, lubricating oil composition of the present invention when the lubricating oil as steam turbine, internal combustion turbine, rotary gas compressor, hydraulic efficiency installation etc. uses, can be realized sufficient long-actingization.

Lubricating oil composition of the present invention preferably also contains the aromatic hydroxy compound that alkyl replaces.Just can take into account thermal oxidation stability and sludge inhibition with higher level thus.

In addition, as the aromatic hydroxy compound that abovementioned alkyl replaces, be at least a kind that from alkylbenzene, alkylnaphthalene, alkyl biphenyl and alkyl diphenyl base paraffinic hydrocarbons, selects, preferably have 1 or 2 carbon numbers and be the compound of 8～30 alkyl.

In addition, lubricating oil composition of the present invention contain phenyl-a-naphthylamine compound and alkylated diphenylamine compound the two as ashless be antioxidant, the alkylated diphenylamine compound is shared ratio in the total amount of phenyl-a-naphthylamine compound and alkylated diphenylamine compound, count in mass ratio, be preferably 0.1～0.9, more preferably 0.1～0.4.As ashless be antioxidant, by with phenyl-a-naphthylamine compound and alkylated diphenylamine compound and usefulness, make proportionally satisfy above-mentioned condition containing of the two, just can take into account resistance to thermooxidation and sludge inhibition with higher level.

The invention effect

As mentioned above, according to the present invention, provide a kind of and in the presence of the cooling agent such as HFC cooling agent, hydro carbons cooling agent, carbon dioxide refrigerant, can bring into play good wear resistance and rubbing characteristics, and realize the two refrigerator oil of the raising of long-term reliability of freezing air conditioner and energy-saving.

In addition, according to the present invention, even if provide a kind of when at high temperature using, also can realize with high level the compressor oil composition of thermal oxidation stability and anti-sludge.

In addition, according to the present invention, provide a kind of over-all properties that can realize well with high level and balance wear resistance, rubbing characteristics, thermal oxidation stability and viscosity-temperature profile, effective hydraulic oil composition aspect the high performance of hydraulic system and energy-saving.

In addition, according to the present invention, even if provide a kind of consumption that does not improve viscosity or increase additive also can obtain good processibility, and the Metalworking fluid composition of easily from the workpiece after the processing, removing.

In addition, according to the present invention, provide a kind of and when under high oil temperature, quenching, can realize sufficient hardness, and can fully suppress the heat-treatment oil composition of strain.

In addition, according to the present invention, provide a kind of over-all properties that can realize well with high level and balance rubbing characteristics, stick-slip reduction property and thermal oxidation stability, effective work mechanism lubricating oil composition aspect the high performance of work mechanism.

In addition, according to the present invention, provide a kind of and take into account well thermal oxidation stability and sludge inhibition with high level and balance, when the lubricating oil as steam turbine, internal combustion turbine, rotary gas compressor, hydraulic efficiency installation etc. uses, can realize the lubricating oil composition of sufficient long-actingization.

Description of drawings

Fig. 1 is the summary pie graph that the oil spray test device that uses among the embodiment is shown.Fig. 2 is disk and the configuration of ball and the explanatory view of action in SRV (the small reciprocal kinetic friction) test.Fig. 3 is for schematically illustrating the summary pie graph of the measuring friction coefficient system that uses among the embodiment.Fig. 4 is for schematically illustrating the summary pie graph of the stick-slip reduction property evaluating apparatus that uses among the embodiment.Fig. 5 illustrates the frictional coefficient of the device acquisition of using Fig. 4 and a routine graphic representation of the mutual relationship of time.Fig. 6 is the explanatory view that the high-temperature pump round-robin test equipment that uses among the embodiment is shown.Nomenclature

1... oil spray test device, 11... oil fog generator, 12... mist of oil box, 13... pressure warning unit, 14... trapping bottle, 15... nozzle, 16... spuious mist of oil relief outlet, 201... disk, 202... ball, 301... operator's console, 302...A/C servomotor, 303... feed screw, 304... movable anchor clamps, 305... load cell, 306... base, 307... computer, 308... controlling board, 309... ballast, 400... elastomerics, 401... upside test film, 402... downside test film, 403... load detector, 410... support platform, 601... fuel tank, 602... reducing valve, 604... pot strainer, 605... under meter, 606... water cooler.

Embodiment

Below explain the preferred embodiments of the invention.

(the 1st embodiment; Refrigerator oil) refrigerator oil of the 1st embodiment of the present invention contains %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is the lubricant base (being designated hereinafter simply as " lubricant base of the present invention ") below 2.5.

The %C of lubricant base of the present invention _A, as mentioned above, be below 2, be preferably below 1.5, more preferably below 1.If the %C of lubricant base _ASurpass above-mentioned higher limit, then viscosity-temperature profile, thermal oxidation stability and rubbing characteristics reduce.In addition, although the %C of lubricant base of the present invention _AAlso can be 0, but by making %C _ABe more than 0.1, can further improve the solvability of additive.

In addition, in the lubricant base of the present invention, %C _PWith %C _NRatio (%C _P/ %C _N), as mentioned above, be more than 6, more preferably more than 7.If %C _P/ %C _NLess than above-mentioned lower value, then viscosity-temperature profile, thermal oxidation stability and rubbing characteristics reduce, and then when cooperating additive in lubricant base, the effect of this additive reduces.In addition, %C _P/ %C _NBe preferably below 35, more preferably below 20, more preferably below 14, be particularly preferably below 13.By making %C _P/ %C _NBelow above-mentioned higher limit, can further improve the solvability of additive.

In addition, the %C of lubricant base of the present invention _PBe preferably more than 80, more preferably 82～99, more preferably 85～95, be particularly preferably 87～93.%C when lubricant base _PDuring less than above-mentioned lower value, viscosity-temperature profile, thermal oxidation stability and rubbing characteristics have the tendency of reduction, and then when cooperating additive in lubricant base, the effect of this additive has the tendency of reduction.In addition, if the %C of lubricant base _PSurpass above-mentioned higher limit, then the solvability of additive has the tendency of reduction.

In addition, the %C of lubricant base of the present invention _NBe preferably below 19, more preferably 5～15, more preferably 7～13, be particularly preferably 8～12.If the %C of lubricant base _NSurpass above-mentioned higher limit, then viscosity-temperature profile, thermal oxidation stability and rubbing characteristics have the tendency of reduction.In addition, if %C _NLess than above-mentioned lower value, then the solvability of additive has the tendency of reduction.

Be explained said %C among the present invention _P, %C _NAnd %C _AThat the method (n-d-M ring analysis) according to ASTM D 3238-85 of referring to is respectively obtained, paraffinic hydrocarbons carbon number with respect to the per-cent of total carbon number, naphthenic hydrocarbon carbon number with respect to the per-cent of total carbon number and the aromatic series carbon number per-cent with respect to total carbon number.In a word, above-mentioned %C _P, %C _NAnd %C _APreferable range be the value of obtaining according to aforesaid method, even for example do not contain the lubricant base of naphthenic hydrocarbon composition, the %C that is obtained by aforesaid method _NSometimes also express the value greater than 0.

In addition, the iodine number of lubricant base of the present invention as mentioned above, is below 2.5, is preferably below 1.5, more preferably below 1, more preferably below 0.8; In addition, although also can be less than 0.01, consider from the little viewpoint of the effect corresponding with it and from the relation of economy, be preferably more than 0.01, more preferably more than 0.1, more preferably more than 0.5.Be below 2.5 by the iodine number that makes lubricant base, can increase substantially thermal oxidation stability.Be explained the iodine number that said among the present invention " iodine number " refers to adopt the indicator titration method of JISK 0070 " acid number of chemical preparations, saponification value, iodine number, hydroxyl value and non-saponification value " to measure.

For lubricant base of the present invention, as long as its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, just do not have particular restriction.Specifically, can enumerate among following various base oils %C _A, %C _P/ %C _N, and iodine number satisfy respectively the base oil of above-mentioned condition, described base oil comprises by with those lubricating oil distillates that is obtained through air distillation and/or underpressure distillation by crude oil, adopts a kind of method being selected among the refinement treatment such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrofining, sulfuric acid scrubbing, clay treatment individually or the Combination of Methods ground more than 2 kinds is made with extra care and the paraffinic mineral oil that obtains or N-alkanes hydro carbons base oil, isomeric alkane hydro carbons base oil etc.These lubricant bases can use separately a kind, and, also can will be used in combination more than 2 kinds.

Preference as lubricant base of the present invention, can enumerate take following base oil (1)～(8) as raw material, this stock oil and/or the lubricating oil distillate that reclaims from this stock oil are made with extra care by the process for purification of appointment, reclaimed lubricating oil distillate wherein and the base oil that obtains: the wax (soft wax etc.) that the distilled oil (WVGO) (3) that distilled oil (2) the paraffinic base quasi-oil that (1) paraffinic base quasi-oil and/or mixed base quasi-oil obtain through the normal pressure distillation and/or the air distillation residual oil of mixed base quasi-oil obtain through underpressure distillation is obtained by the lubricating oil dewaxing operation and/or the synthetic wax (f-t synthetic wax that obtains by Synthetic Oil Production from Natural Gas (GTL) technique etc., GTL wax etc.) (4) mild hydrocracking handling oil (5) of being selected from the mixing oil more than a kind or 2 kinds in base oil (1)～(3) and/or this mixing oil is selected from the mixing oil more than 2 kinds (6) base oil (1) in base oil (1)～(4), (2), (3), (4) or the mild hydrocracking handling oil (MHC) (8) of the deasphalted oil of (5) (DAO) (7) base oil (6) be selected from the mixing oil more than 2 kinds in base oil (1)～(7).

Be explained, as the process for purification of above-mentioned appointment, the hydrofinings such as preferred hydrocracking, hydrofining; Furfural solvent extracting equal solvent is refining; The dewaxing such as solvent dewaxing or catalytic dewaxing; Utilize the clay-filtered of acidic white earth or atlapulgite etc.; The reagent such as sulfuric acid scrubbing, caustic soda washing (acid or alkali) washing etc.In the present invention, can use separately a kind in these process for purification, also can will be used in combination more than 2 kinds.In addition, when the process for purification more than 2 kinds was used in combination, it did not sequentially have particular restriction, can suitably select.

And then, as lubricant base of the present invention, particularly preferably be following base oil (9) or (10) that obtain by the processing that the lubricating oil distillate that is selected from the base oil in above-mentioned base oil (1)～(8) or reclaim from this base oil is stipulated.(9) will be selected from the base oil in above-mentioned base oil (1)～(8) or the lubricating oil distillate that reclaims carries out hydrocracking from this base oil, wait and the lubricating oil distillate of recovery carries out the dewaxing treatment such as solvent dewaxing or catalytic dewaxing the hydrocracking mineral oil that is perhaps carrying out this dewaxing treatment and obtain by distillation through distillation to its product or by its product.(10) lubricating oil distillate that is selected from the base oil in above-mentioned base oil (1)～(8) or reclaim from this base oil is carried out hydroisomerization, wait and the lubricating oil distillate of recovery carries out the dewaxing treatment such as solvent dewaxing or catalytic dewaxing the hydroisomerization mineral oil that is perhaps carrying out this dewaxing treatment and obtain by distillation through distillation to its product or by its product.

In addition, when obtaining the lubricant base of above-mentioned (9) or (10), in preferred step, as required, solvent treatment processing and/or hydrofining treatment process can also be set.

In addition, to above-mentioned hydrocracking, the catalyzer that uses during hydroisomerization does not have particular restriction, the preferred use by by the composite oxides with lytic activity (for example, silica alumina, the aluminum oxide boron oxide, silicon-dioxide zirconium white etc.) or by the combination more than a kind of these composite oxides, with bond load on the carrier that forms of tackiness agent the hydrocracking catalyst of metal with hydrogenation ability (such as the metal of periodictable VIa family or the metal of group VIII etc. more than a kind) is arranged, perhaps containing zeolite (ZSM-5 for example, zeolite beta, SAPO-11 etc.) load has the hydroisomerisation catalysts that contains the metal with hydrogenation ability more than at least a kind in the group VIII metal on the carrier.Hydrocracking catalyst and hydroisomerisation catalysts can be used in combination it by laminated or mixing etc.

Reaction conditions during for hydrocracking, hydroisomerization does not have particular restriction, but is preferably set to: hydrogen dividing potential drop 0.1～20MPa, 150～450 ℃ of average reaction temperature, LHSV0.1～3.0hr ^-1, hydrogen/oil ratio 50～20000scf/b.

As the preparation method's of lubricant base of the present invention preference, can enumerate following preparation method A.

That is, preparation method A of the present invention has following operation: the 1st operation: prepare a kind of carrier, this carrier is carrying out NH ₃NH when the desorption temperature dependency is estimated under 300～800 ℃ ₃Desorption rate is with respect to NH ₃The per-cent of total desorption rate below 80%, make at least a kind at least a kind in the duty cycle table the VIa family metal and group VIII metal on this carrier, thereby obtain hydrocracking catalyst; The 2nd operation: in the presence of hydrocracking catalyst, will contain the above stock oil of soft wax 50 volume % at hydrogen dividing potential drop 0.1～14MPa, 230～430 ℃ of average reaction temperature, LHSV0.3～3.0hr ^-1, hydrogen-oil ratio 50～14000scf/b condition under carry out hydrocracking; The 3rd operation: the cracking generation oil of the 2nd operation gained is carried out fractionation by distillation, obtain lubricating oil distillate; With the 4th operation: the lubricating oil distillate to the 3rd operation gained carries out dewaxing treatment.

Below, above-mentioned preparation method A is described in detail in detail.

(stock oil) uses and contains the above stock oil of soft wax 50 volume % in above-mentioned preparation method A.Be explained, said among the present invention " contain soft wax 50 volume % above stock oil ", comprise the stock oil that only contains soft wax and the mixing oil that formed by soft wax and other stock oil and wherein contain more than the soft wax 50 volume % stock oil the two.

Soft wax be a class when preparing lubricant base by the paraffin class lubricating oil distillate, the content of wax composition of by-product in the solvent dewaxing operation, in the present invention, soft wax also comprises by this content of wax composition being implemented further de-oiling processes the composition that obtains.The principal constituent of soft wax is the less branched paraffin (isoparaffin) of normal paraffin and side chain, and wherein naphthenic hydrocarbon composition or aromatic component are less.The kinematic viscosity of the soft wax that uses when blending stock oil can suitably be selected according to the kinematic viscosity of target lube base oil, during as the low viscosity base oil of lubricant base of the present invention, the kinematic viscosity when preferably adopting 100 ℃ is 2～25mm in preparation ²About/s, be preferably 2.5～20mm ²About/s, 3～15mm more preferably ²Soft wax about/s, that viscosity ratio is lower.In addition, other proterties of soft wax also can be arbitrarily, but fusing point is preferably 35～80 ℃, more preferably 45～70 ℃, more preferably 50～60 ℃.In addition, the oil-contg of soft wax is preferably below the 60 quality %, more preferably below the 50 quality %, more preferably below the 25 quality %, be particularly preferably below the 10 quality %, and, be preferably more than the 0.5 quality %, more preferably more than the 1 quality %.In addition, the sulphur content of soft wax is preferably below the 1 quality %, more preferably below the 0.5 quality %, and, be preferably more than the 0.001 quality %.

At this moment, the oil-contg of the soft wax (hereinafter referred to as " soft wax A ") that the abundant de-oiling of process is processed is preferably 0.5～10 quality %, more preferably 1～8 quality %.In addition, the sulphur content of soft wax A is preferably 0.001～0.2 quality %, more preferably 0.01～0.15 quality %, more preferably 0.05～0.12 quality %.On the other hand, be preferably 10～60 quality % without the oil-contg that de-oiling is processed or inadequate soft wax (hereinafter referred to as " soft wax B ") is processed in de-oiling, more preferably 12～50 quality %, more preferably 15～25 quality %.In addition, the sulphur content of soft wax B is preferably 0.05～1 quality %, more preferably 0.1～0.5 quality %, more preferably 0.15～0.25 quality %.Be explained, these soft waxs A, B also can implement desulfurization and process according to kind and the characteristic of hydrocracking/isomerization catalyst, and the sulphur content of this occasion is preferably below the 0.01 quality %, more preferably below the 0.001 quality %.

In above-mentioned preparation method A, by using above-mentioned soft wax A as raw material, can suitably obtain %C _A, %C _P/ %C _NAnd iodine number satisfies respectively the lubricant base of the present invention of above-mentioned condition.In addition, according to above-mentioned preparation method A, even if use oil-contg or sulphur content soft wax B higher, that purity is lower and cheap as raw material, also can obtain the high lubricant base of the good added value of viscosity index high and low temperature characteristic and thermal oxidation stability.

When stock oil is the mixing oil of soft wax and other stock oils, as these other stock oils, as long as soft wax shared ratio in the mixing oil total amount does not just have particular restriction more than 50 volume %, preferably use the heavy air distillation distilled oil of crude oil and/or the mixing oil of underpressure distillation distilled oil.

In addition, when stock oil is the mixing oil of soft wax and other stock oils, from the viewpoint of base oil of preparation high viscosity index (HVI), soft wax in mixing oil shared ratio more preferably more than 70 volume %, further preferably more than 75 volume %.When this ratio during less than 50 volume %, the aromatic component in the gained lubricant base, the naphthenic hydrocarbon oil content that becomes to grade has the tendency of increase, and the viscosity index of lubricant base has the tendency of reduction.

On the other hand, viscosity index for the lubricant base guaranteeing to heavens to make, as with heavy air distillation distilled oil and/or the underpressure distillation distilled oil of the crude oil of soft wax and usefulness, preferably in 300～570 ℃ distillation temperature scope, have the cut that distillates composition more than the 60 volume %.

(hydrocracking catalyst) can adopt a kind of like this hydrocracking catalyst in above-mentioned preparation method A, this catalyzer is by making those carry out NH ₃NH when the desorption temperature dependency is estimated under 300～800 ℃ ₃Desorption rate is with respect to NH ₃The per-cent of total desorption rate in the carrier loaded periodictable VIa family metal below 80% at least a kind and at least a kind of hydrocracking catalyst that forms in the group VIII metal.

Herein, " NH ₃The desorption temperature dependency is estimated " refer to the method introduced in the document (Murakami Y., Zeolites 1990; 10,532, Karge H.G., Dondur V., J.Phys.Chem.1990; 94,765 etc. for Sawa M., Niwa M.), step is carried out as described below.At first, with support of the catalyst in stream of nitrogen gas, pre-treatment under the temperature more than 400 ℃ more than 30 minutes in order to remove the molecule of absorption, then at 100 ℃ of lower absorption NH ₃Till saturated.Then, this support of the catalyst is heated up according to the heat-up rate below 10 ℃/minute in 100～800 ℃ temperature range, in order to make NH ₃The NH that desorption and monitoring are separated owing to desorption under each assigned temperature ₃And, obtain the NH under 300 ℃～800 ℃ ₃Desorption rate is with respect to NH ₃The per-cent of total desorption rate (desorption rates under 100～800 ℃).

Used support of the catalyst among the above-mentioned preparation method A is that those are carrying out above-mentioned NH ₃NH when the desorption temperature dependency is estimated under 300～800 ℃ ₃Desorption rate is with respect to NH ₃The per-cent of total desorption rate below 80%, preferably below 70%, more preferably at the carrier below 60%.By consisting of hydrocracking catalyst with this carrier, can the Acidity of domination lytic activity be suppressed fully, therefore by the hydrocracking effect, can so that the generation of the isoparaffin that causes from the cracking isomerization of the high molecular normal paraffin in soft wax in the stock oil etc. can be efficiently and positively carry out, and, can also fully suppress the excessive fragmentation of the isoparaffin compound that generates.Its result can obtain enough amounts so that have the high molecule of the viscosity index of appropriate side chain chemical structure in the molecular weight ranges of appropriateness.

As this carrier, be preferably amorphous-type and have the binary oxide of Acidity, for example, can enumerate illustrated binary oxide in the document (" metal oxide and catalyst action thereof ", clear water wise man youth, talk society, 1978) etc.

Wherein, preferably contain as the amorphous-type composite oxides, by 2 kinds in the oxide compound that is selected from the element among Al, B, Ba, Bi, Cd, Ga, La, Mg, Si, Ti, W, Y, Zn and the Zr acid binary oxides that are composited.Ratio by adjusting the various oxide compounds in these acid binary oxides etc. can obtain at above-mentioned NH ₃During adsorption desorption is estimated, meet the acid carrier of this purpose.Be explained, the acid binary oxide that consists of this carrier both can be a kind in the above-mentioned oxide compound, also can be its mixture more than 2 kinds.In addition, this carrier both can be the carrier that is made of above-mentioned acid binary oxide, perhaps also can be by tackiness agent should the acidity binary oxide carrier that forms of bonding.

And then this carrier preferably contains and is selected from the amorphous-type silica alumina, amorphous-type silicon-dioxide zirconium white, amorphous-type silicon-dioxide magnesium oxide, the amorphous-type silicon dioxide and titanium dioxide, amorphous-type silicon-dioxide boron oxide, the amorphous-type alumina zirconia, amorphous-type aluminum oxide magnesium oxide, amorphous-type aluminum oxide titanium dioxide, amorphous-type aluminum oxide boron oxide, amorphous-type zirconium white magnesium oxide, amorphous-type zirconium white titanium dioxide, amorphous-type zirconium white boron oxide, amorphous-type magnesium oxide titanium dioxide, at least a kind of acid binary oxide in amorphous-type magnesium oxide boron oxide and the amorphous-type titanium oxide boron oxide.The acid binary oxide that consists of this carrier both can be a kind of above-mentioned binary oxide, also can be the mixture more than 2 kinds.In addition, this carrier both can be the carrier that contains above-mentioned acid binary oxide, perhaps also can be by should the acidity binary oxide with tackiness agent the carrier that forms of bonding.As tackiness agent, so long as be generally used for the tackiness agent of Kaolinite Preparation of Catalyst, just there is not particular restriction, be preferably selected from silicon-dioxide, aluminum oxide, magnesium oxide, titanium dioxide, zirconium white, clay or their mixture etc.

According to above-mentioned preparation method A, by in the metal (nickel, cobalt, palladium, platinum etc.) of at least a kind in the metal (molybdenum, chromium, tungsten etc.) that makes above-mentioned carrier loaded periodictable VIa family and group VIII at least a kind just can consist of hydrocracking catalyst.These metals are the metals with hydrogenation ability, when the scission reaction or the branching reaction termination that are used for making paraffin compound by acid carrier, when generation had the isoparaffin of appropriate molecular weight and appropriate branched structure, above-mentioned metal played an important role.

As the charge capacity of the metal in the hydrocracking catalyst, the charge capacity of VIa family metal is preferably every kind of metal 5～30 quality %, and the charge capacity of group VIII metal is preferably every kind of metal 0.2～10 quality %.

And then, in the used hydrocracking catalyst of above-mentioned preparation method A, the metal more than a kind as VIa family metal, be more preferably the molybdenum of content in 5～30 quality % scopes, in addition, as the metal more than a kind of group VIII metal, be more preferably the nickel of content in 0.2～10 quality % scope.

By above-mentioned carrier and VIa family metal more than a kind and the hydrocracking catalyst that consists of of the metal more than a kind of group VIII metal, preferably be used for hydrocracking with sulfided state.Sulfidizing can adopt known method to carry out.

(hydrocracking operation) according to above-mentioned preparation method A, by in the presence of above-mentioned hydrocracking catalyst, makes and contains the above stock oil of soft wax 50 volume %, is 0.1～14MPa in the hydrogen dividing potential drop, is preferably 1～14MPa, 2～7MPa more preferably; Average reaction temperature is 230～430 ℃, is preferably 330～400 ℃, more preferably 350～390 ℃; LHSV is 0.3～3.0hr ^-1, be preferably 0.5～2.0hr ^-1Hydrogen-oil ratio is 50～14000scf/b, is preferably under the condition of 100～5000scf/b, carries out hydrocracking.

According to above-mentioned hydrocracking operation, in the process that makes from the normal paraffin cracking of the soft wax in the stock oil, by carrying out the isomerization to isoparaffin, can generate the isoparaffin composition that pour point is low and viscosity index is high, simultaneously can make the aromatics as the high viscosity index (HVI) obstruction factor that contains in the stock oil be cracked into monocyclic aromatic compound, cyclanes compound and paraffin compound, and, the polycyclic naphthene hydrocarbon compound as the high viscosity index (HVI) obstruction factor can be cracked into single-ring naphthene compound or paraffin compound.Be explained, consider from the viewpoint of high viscosity index (HVI), the compound that the boiling point in the preferred feedstock oil is high and viscosity index is low is more few better.

In addition, the cleavage rate for the evaluation response progress is defined by following formula: (cleavage rate (volume %))=100-(boiling point of product is in the ratio (volume %) of the cut more than 360 ℃) cleavage rate is preferably 3～90 volume %.Cleavage rate is during less than 3 volume %, owing to the high high molecular normal paraffin generation cracking isomerization of pour point contained in the stock oil causes the hydrocracking of the low aromatic component of the generation of isoparaffin and viscosity index, polycyclic naphthene hydrocarbon composition insufficient, in addition, when cleavage rate surpasses 90 volume %, the yield step-down of lubricating oil distillate, therefore all not preferred.

(fractionation by distillation operation) followed, and fractionation by distillation goes out lubricating oil distillate from the cracking generation oil that above-mentioned hydrocracking operation obtains.At this moment, often also can obtain oil fuel cut as light composition.

The oil fuel cut is fully to carry out desulfurization, denitrogenation, and fully carries out the cut that obtains behind the aromatic hydrogenation.Wherein, the isoparaffin composition in the naphtha fraction is many, and the smoke point of kerosene(oil)fraction is high, and the cetane value of diesel oil distillate is high, and the oil that acts as a fuel is high-quality.

On the other hand, when the hydrocracking of lubricating oil distillate is insufficient, a part wherein can be supplied in the hydrocracking operation again.In addition, in order to obtain having the lubricating oil distillate of desired kinematic viscosity, can again carry out underpressure distillation to lubricating oil distillate.Be explained, this underpressure distillation separates and can carry out after having carried out dewaxing treatment as follows.

In the evaporation separation circuit, generate oil by the cracking with gained in the hydrocracking operation and carry out underpressure distillation, can suitably obtain being called the lubricant base of 70Pale, SAE10, SAE20.

Use more low viscous soft wax as the system of stock oil, be suitable for generating in a large number 70Pale, SAE10 cut, the full-bodied soft wax of use in above-mentioned scope is suitable for generating in a large number SAE20 as the system of stock oil.Yet, even if use full-bodied soft wax, also can be according to the condition that degree selects to generate a great deal of 70Pale, SAE10 of carrying out of scission reaction.

(dewaxing operation) because in above-mentioned fractionation by distillation operation, and the pour point that is generated the lubricating oil distillate that oil content distillates by cracking is high, therefore in order to obtain having the lubricant base of desired pour point, can dewax.Dewaxing treatment can adopt the method for the routines such as solvent dewaxing process or catalytic dewaxing method to carry out.Wherein, solvent dewaxing process can adopt the mixed solvent of MEK, toluene usually, but also can adopt benzene, acetone, MIBK equal solvent.For the pour point that makes pressed oil reaches below-10 ℃, preferably under 1～6 times of solvent/oil ratio, filtration temperature-5～-45 ℃, preferred-10～-40 ℃ condition, carry out.Be explained, the wax composition that is removed here can supply to it in hydrocracking operation as soft wax again.

According to above-mentioned preparation method, also can added solvent refinement treatment and/or hydrofining processing in dewaxing treatment.These additional processing are carried out for the ultraviolet stability and the oxidation stability that improve lubricant base, therefore can adopt the method for using in the lube oil finishing operation of routine to carry out.

When solvent treatment, normal operation furfural, phenol, N-Methyl pyrrolidone etc. are removed a small amount of aromatics residual in the lubricating oil distillate as solvent, particularly polycyclc aromatic compound.

In addition, hydrofining is for olefin(e) compound and aromatics hydrogenation and carry out, catalyzer is not particularly limited, the aluminium oxide catalyst that in the molybdenum grade in an imperial examination VIa family metal at least a kind and the group VIII metals such as cobalt, nickel at least a kind can working load be arranged and form is at reaction pressure (hydrogen dividing potential drop) 7～16MPa, 300～390 ℃ of average reaction temperature, LHSV 0.5～4.0hr ^-1Condition under carry out.

In addition, as the preparation method's of lubricant base of the present invention preference, can enumerate following preparation method B.

That is, preparation method B of the present invention has: in the presence of catalyzer, the stock oil that will contain the paraffinic hydrocarbon carries out the 5th operation of hydrocracking and/or hydroisomerization; Wait and the lubricating oil distillate of recovery carries out the 6th operation of dewaxing treatment through distillation with the product that will obtain in the 5th operation or from its product.

The below is described in detail above-mentioned preparation method B.

(stock oil) can use the stock oil that contains the paraffinic hydrocarbon in above-mentioned preparation method B.Be explained, the present invention's so-called " paraffinic hydrocarbon " refers to the hydrocarbon of containing ratio more than 70 quality % of paraffin molecules.Carbon number for the paraffinic hydrocarbon does not have particular restriction, usually can use the paraffinic hydrocarbon about 10～100.In addition, method for making for the paraffinic hydrocarbon does not have particular restriction, can use the various paraffinic hydrocarbon of petroleum-type and synthetic class, as particularly preferred paraffinic hydrocarbon, can enumerate the synthetic wax (f-t synthetic wax (FT wax), GTL wax etc.) that obtains by Synthetic Oil Production from Natural Gas (GTL) technique etc., wherein be preferably FT wax.In addition, synthetic wax preferably contains the wax take preferred 15～80, more preferably 20～50 the normal paraffin of carbon number as principal constituent.

The kinematic viscosity of the paraffinic hydrocarbon of using in the stock oil blending can suitably be selected according to the kinematic viscosity of target lube base oil, during as the low viscosity base oil of lubricant base of the present invention, the kinematic viscosity when being desirably in 100 ℃ is 2～25mm in preparation ²About/s, be preferably 2.5～20mm ²About/s, 3～15mm more preferably ²Paraffinic hydrocarbon about/s, that viscosity ratio is lower.In addition, other proterties of paraffinic hydrocarbon also can be arbitrarily, but when the paraffinic hydrocarbon was the synthetic waxs such as FT wax, its fusing point was preferably 35～80 ℃, more preferably 50～80 ℃, and more preferably 60～80 ℃.In addition, the oil-contg of synthetic wax is preferably below the 10 quality %, more preferably below the 5 quality %, more preferably below the 2 quality %.In addition, the sulphur content of synthetic wax is preferably below the 0.01 quality %, more preferably below the 0.001 quality %, more preferably below the 0.0001 quality %.

When stock oil is the mixing oil of above-mentioned synthetic wax and other stock oils, as these other stock oils, as long as synthetic wax in the mixing oil total amount shared ratio more than 50 volume %, just do not have particular restriction, preferably use the heavy air distillation distilled oil of crude oil and/or the mixing oil of underpressure distillation distilled oil.

In addition, when stock oil is the mixing oil of above-mentioned synthetic wax and other stock oils, consider from the viewpoint of the base oil of preparation high viscosity index (HVI), synthetic wax shared ratio in mixing oil is preferably more than the 70 volume %, more preferably more than the 75 volume %.This ratio is during less than 70 volume %, and aromatic component, the naphthenic hydrocarbon in the lubricant base of the obtaining oil content that becomes to grade has the tendency of increase, and the viscosity index of lubricant base has the tendency of reduction.

On the other hand, in order to guarantee to heavens the viscosity index of prepared lubricant base, as with heavy air distillation distilled oil and/or the underpressure distillation distilled oil of the crude oil of synthetic wax and usefulness, preferably in 300～570 ℃ distillation temperature scope, have the cut that distillates composition more than the 60 volume %.

(catalyzer) do not have particular restriction for the used catalyzer of preparation method B, but preferred the use by load on containing the carrier of silico-aluminate has the catalyzer that forms more than a kind in periodictable VIb family's metal and the group VIII metal of being selected from as the reactive metal composition.

Silico-aluminate refers to by these 3 kinds of metal oxides that element consists of of aluminium, silicon and oxygen.In addition, in the scope of not damaging effect of the present invention, also can coexist with other metallic elements.At this moment, the content of other metallic elements in its oxide compound, is preferably below the 5 quality % of total amount of aluminum oxide and silicon-dioxide, more preferably below the 3 quality %.As coexisting metallic element, can enumerate such as titanium, lanthanum, manganese etc.

The crystallinity of silico-aluminate also can estimate according to the ratio of 4 coordination aluminium atoms in whole aluminium atoms, this ratio can by ²⁷The Al solid NMR is measured.As the used silico-aluminate of the present invention, with respect to the total amount of aluminium, the ratio of 4 coordination aluminium is preferably more than the 50 quality %, more preferably more than the 70 quality %, more preferably more than the 80 quality %.The below will be that the silico-aluminate more than the 50 quality % is called " crystallized silicon aluminate " with respect to the ratio of 4 coordination aluminium of aluminium total amount.

As the crystallized silicon aluminate, can use so-called zeolite.As preferred example, can enumerate y-type zeolite, ultrastable Y－type zeolite (USY type zeolite), zeolite beta, mordenite, ZSM-5 etc., wherein, USY zeolite particularly preferably.In the present invention, can use separately a kind in the crystallized silicon aluminate, also can will be used in combination more than 2 kinds.

As the preparation method of the carrier that contains the crystallized silicon aluminate, can enumerate the mixture forming with crystallized silicon aluminate and tackiness agent, again with the method for this formed body sintering.There is not particular restriction for employed tackiness agent, preferential oxidation aluminium, silicon-dioxide, silica alumina, titanium dioxide, magnesium oxide, wherein aluminum oxide particularly preferably.Usage ratio for tackiness agent does not have particular restriction, usually, take the formed body total amount as benchmark, is preferably 5～99 quality %, more preferably 20～99 quality %.The sintering temperature that contains the formed body of crystallized silicon aluminate and tackiness agent is preferably 430～470 ℃, and more preferably 440～460 ℃, more preferably 445～455 ℃.In addition, do not have particular restriction for sintering time, be generally 1 minute～24 hours, be preferably 10 minutes～20 hours, more preferably 30 minutes～10 hours.Sintering can carry out in air atmosphere, but preferably carries out in the oxygen-free atmospheres such as nitrogen atmosphere.

In addition, as the VIb family metal that is carried on the above-mentioned carrier, can enumerate chromium, molybdenum, tungsten etc.; As the group VIII metal, can enumerate cobalt, nickel, rhodium, palladium, iridium, platinum etc. particularly.These metals can use separately a kind, perhaps will be used in combination more than 2 kinds.With the metallic combination more than 2 kinds the time, the precious metals such as platinum, palladium can be made up mutually, also the base metals such as nickel, cobalt, tungsten, molybdenum can be made up mutually, perhaps precious metal and base metal are made up mutually.

In addition, metal can adopt the method for carrier impregnation being carried out the processing such as ion-exchange in containing the solution of metal to the load of carrier.The charge capacity of metal can suitably be selected, and usually, take the catalyzer total amount as benchmark, is suitably 0.05～2 quality %, is preferably 0.1～1 quality %.

(hydrocracking/hydroisomerization operation) in above-mentioned preparation method B, in the presence of above-mentioned catalyzer, the stock oil that will contain the paraffinic hydrocarbon carries out hydrocracking/hydroisomerization.This hydrocracking/hydroisomerization operation can be carried out with fixed-bed reactor.As the condition of hydrocracking/hydroisomerization, for example preferred temperature is 250～400 ℃ respectively, and hydrogen pressure is that the liquid hourly space velocity (LHSV) of 0.5～10MPa, stock oil is 0.5～10h ^-1

(fractionation by distillation operation) then generates from cracking that above-mentioned hydrocracking/the hydroisomerization operation obtains that fractionation by distillation goes out lubricating oil distillate the oil.Be explained, the fractionation by distillation operation among the preparation method B is identical with fractionation by distillation operation among the preparation method A, therefore be not repeated.

(dewaxing operation) then dewaxes to generating the lubricating oil distillate that fractionates out the oil from cracking in the above-mentioned fractionation by distillation operation.This dewaxing operation can adopt solvent dewaxing or catalytic dewaxing etc. in the past known dewaxing technique carry out.The occasion of before dewaxing, the material of boiling point below 370 ℃ that exists in cracking/isomerization generation oil not separated with high boiling substance, can generate according to cracking/isomerization the purposes of oil, whole hydroisomerizing compounds are dewaxed, perhaps only the cut of boiling point more than 370 ℃ dewaxed.

In solvent dewaxing, the hydroisomerizing compound is contacted with other solvent phase such as acetone and MEK, MIBK with the ketone of cooling, and then with its cooling, make high pour point material with the form precipitation of waxy solid, this precipitation is separated from the lubricating oil distillate that contains solvent as raffinate oil.And then, raffinate oil is cooled off with the scraped surface deep freezer, except the solids component of dewax.In addition, the low molecular weight hydrocarbons such as propane also can be used for dewaxing, cracking/isomerization can be generated oil in this occasion and mix with low molecular weight hydrocarbon, and wherein at least a portion gasification generates oil cooling with cracking/isomerization again, makes the wax precipitation.Wax can separate from raffinate oil according to filtration, filter membrane or centrifugal separation etc.Then, desolventizing from raffinate oil with the raffinate oil fractionation, can obtain the target lube base oil.

In addition, when carrying out catalytic dewaxing (catalyzer dewaxing), in the presence of suitable dewaxing catalyst, make cracking/isomerization generate oil under the condition for validity that can make depression of pour point with H-H reaction.In catalytic dewaxing, a part of high boiling substance in cracking/isomerization product is converted into low-boiling point material, this low-boiling point material is separated from heavier base oil fractions, and with the base oil fractions fractionation, obtained the lubricant base more than 2 kinds.The separation of low-boiling point material can be carried out before obtaining the target lube base oil or in fractionation.

As dewaxing catalyst, as long as can make cracking/isomerization generate the depression of pour point of oil, just there is not particular restriction, preferably can generate the oil from cracking/isomerization and obtain with high yield the target lube base oil.As this dewaxing catalyst, be preferably shape-selective molecular sieve, can enumerate particularly ferrierite, mordenite, ZSM-5, ZSM-11, ZSM-23, ZSM-35, ZSM-22 and (also be known as θ ₁(シ one タ ワ Application) or TON), aluminosilicophosphate class (SAPO) etc.These molecular sieves preferably are used in combination with catalyst metal component, more preferably make up with precious metal.As preferred combination, can enumerate for example compound compound of platinum and H-mordenite.

Do not have particular restriction for the dewaxing condition, preferred temperature is 200～500 ℃ respectively, and hydrogen pressure is 10～200 bar (1MPa～20MPa).In addition, when using flow through reactors, H ₂Processing speed is preferably 0.1～10kg/l/hr, and LHSV is preferably 0.1～10h ^-1, 0.2～2.0h more preferably ^-1In addition, dewaxing is that 350～400 ℃ material is converted to the material that has less than the boiling point of this initial boiling point and carries out by cracking/isomerization being generated initial boiling point below the common 40 quality % contained in the oil, below the preferred 30 quality % preferably.

Above, preparation method A and preparation method B as the preferred preparation method of lubricant base of the present invention are illustrated, but the preparation method of lubricant base of the present invention is not limited to this.For example, in above-mentioned preparation method A, also can adopt the synthetic waxs such as FT wax, GTL wax to replace soft wax.And, in above-mentioned preparation method B, also can use the stock oil that contains soft wax (preferred soft wax A, B).And then, in preparation method A, B, also may be used soft wax (preferred soft wax A, B) and synthetic wax (preferred FT wax, GTL wax).

Be explained, when employed stock oil is the mixing oil of the stock oil beyond above-mentioned soft wax and/or synthetic wax and these wax when at preparation lubricant base of the present invention, the content of soft wax and/or synthetic wax take the stock oil total amount as benchmark, is preferably more than the 50 quality %.

In addition, as the stock oil for the preparation of lubricant base of the present invention, be preferably the stock oil that contains soft wax and/or synthetic wax, oil-contg wherein is preferably below the 60 quality %, more preferably below the 50 quality %, more preferably below the 25 quality %.

In addition, the content of saturated composition in the lubricant base of the present invention take the lubricant base total amount as benchmark, is preferably more than the 90 quality %, more preferably more than the 93 quality %, more preferably more than the 95 quality %; In addition, the saturated composition of ring-type is shared ratio in this saturated composition, be preferably below the 40 quality %, and 0.1～40 quality % more preferably, more preferably 2～30 quality % further are preferably 5～25 quality %, are particularly preferably 10～21 quality %.Satisfy respectively above-mentioned condition by content and the saturated composition of the ring-type shared ratio in this saturated composition that makes saturated composition, just can realize viscosity-temperature profile and thermal oxidation stability with higher level, in addition, when in this lubricant base, cooperating additive, this additive is fully stably dissolved and remain in the lubricant base, can bring into play with higher level again the function of this additive.And then, can improve the rubbing characteristics of lubricant base itself, its result can improve the effect that reduces friction, and then, can realize the raising of energy saving.

In addition, when the content of saturated composition during less than 90 quality %, viscosity-temperature profile, thermal oxidation stability and rubbing characteristics become insufficient.In addition, if the saturated composition of ring-type shared ratio in saturated composition surpasses 40 quality %, then when cooperating additive in lubricant base, the effect of this additive descends.And then, if the saturated composition of ring-type in saturated composition shared ratio less than 0.1 quality %, then when in lubricant base, cooperating additive, the solvability of this additive reduces, cause dissolving and remaining on the significant quantity reduction of this additive in the lubricant base, therefore can't effectively obtain the function of this additive.In addition, the content of saturated composition can be 100 quality %, but the deliquescent viewpoint consideration from reducing preparation cost and improving additive, be preferably below the 99.9 quality %, more preferably below the 99.5 quality %, more preferably below the 99 quality %, be particularly preferably below the 98.5 quality %.

In lubricant base of the present invention, the saturated composition of ring-type shared ratio in this saturated composition is below the 40 quality %, and being equivalent to the saturated composition of non-annularity shared ratio in saturated composition is more than the 60 quality %.Herein, non-annularity is saturated to and minute comprises straight-chain paraffin composition and branched paraffin composition.There is not particular restriction for each paraffinic hydrocarbons composition shared ratio in lubricant base of the present invention, the ratio of branched paraffin composition, take the lubricant base total amount as benchmark, be preferably 55～99 quality %, 57.5～96 quality % more preferably, more preferably 60～95 quality % further are preferably 70～92 quality %, are particularly preferably 80～90 quality %.By making branched paraffin composition shared ratio in lubricant base satisfy above-mentioned condition, can further improve viscosity-temperature profile and thermal oxidation stability, and, when in this lubricant base, cooperating additive, both can fully and stably dissolve and keep this additive, simultaneously again can the further function of bringing into play this additive high-levelly.In addition, straight-chain paraffin composition shared ratio in lubricant base take the lubricant base total amount as benchmark, is preferably below the 1 quality %, more preferably below the 0.5 quality %, more preferably below the 0.2 quality %.Satisfy above-mentioned condition by the ratio that makes the straight-chain paraffin composition, can obtain the better lubricant base of low temperature viscosity characteristic.

In addition, for in lubricant base of the present invention, 1 ring filling composition and the above saturated composition shared content in saturated composition of 2 rings do not have particular restriction, the above saturated composition shared ratio in saturated composition of 2 rings is preferably more than the 0.1 quality %, more preferably more than the 1 quality %, more preferably more than the 3 quality %, be particularly preferably more than the 5 quality %; In addition, be preferably below the 40 quality %, more preferably below the 20 quality %, more preferably below the 15 quality %, be particularly preferably below the 11 quality %.In addition, 1 ring filling composition shared ratio in saturated composition can be 0 quality %, but is preferably more than the 1 quality %, more preferably more than the 2 quality %, more preferably more than the 3 quality %, is particularly preferably more than the 4 quality %; In addition, be preferably below the 40 quality %, more preferably below the 20 quality %, more preferably below the 15 quality %, be particularly preferably below the 11 quality %.

In addition, in lubricant base of the present invention, the quality (M of 1 contained ring filling composition in the saturated composition of ring-type _A) with the quality (M of the above saturated composition of 2 rings _B) ratio (M _A/ M _B), be preferably below 20, more preferably below 3, more preferably below 2, be particularly preferably below 1.In addition, M _A/ M _BCan be 0, but be preferably more than 0.1, more preferably more than 0.3, more preferably more than 0.5.By making M _A/ M _BSatisfy above-mentioned condition, can further take into account viscosity-temperature profile and thermal oxidation stability high-levelly.

In addition, in lubricant base of the present invention, the quality (M of 1 contained ring filling composition in the saturated composition of ring-type _A) with the quality (M of 2 ring filling compositions _c) ratio (M _A/ M _c), be preferably below 3, more preferably below 1.5, more preferably below 1.3, be particularly preferably below 1.2.In addition, M _A/ M _cCan be 0, but be preferably more than 0.1, more preferably more than 0.3, more preferably more than 0.5.By making M _A/ M _cSatisfy above-mentioned condition, can further take into account viscosity-temperature profile and thermal oxidation stability high-levelly.

Be explained, the content of said saturated composition refers to the value (unit: quality %) according to ASTMD 2007-93 mensuration among the present invention.

Quality %) and paraffinic hydrocarbons composition (unit: quality %) in addition, the above saturated composition of the saturated composition of said ring-type among the present invention, 1 ring filling composition, 2 rings and the saturated composition of non-annularity shared ratio in the saturated composition naphthenic hydrocarbon composition that refers to respectively to measure according to ASTM D 2786-91 (determination object: 1 ring～6 ring naphthenic hydrocarbon, unit:.

In addition, straight-chain paraffin composition among the present invention in the said lubricant base refers to, to separating, extract the saturated composition that obtains according to the described method of above-mentioned ASTM D 2007-93, carry out gas chromatographic analysis by following condition, with the value that straight-chain paraffin composition contained in this saturated composition is identified, measured value quantitatively the time converts take the lubricant base total amount as benchmark.Be explained, identify, quantitatively the time, can adopt the biased sample of straight-chain paraffin of carbon number 5～50 as standard model, contained straight-chain paraffin composition in saturated composition is obtained with respect to the ratio of total peak area value (removing from the peak area value in the thinner) according to the aggregate value of peak area suitable with each straight-chain paraffin in the color atlas.(GC conditions) chromatographic column: the nonpolar chromatographic column of liquid phase (length 25mm, internal diameter 0.3mm φ, liquid phase film thickness 0.1 μ m) Elevated Temperature Conditions: 50 ℃～400 ℃ (heat-up rates: 10 ℃/min) carrier gas: helium (linear velocity: 40cm/min) splitting ratio: 90/1 sample injection rate: 0.5 μ L (being diluted to the injection rate of 20 times sample with dithiocarbonic anhydride)

In addition, the ratio of the branched paraffin composition in the lubricant base refers to, the difference that straight-chain paraffin contained in the saturated composition of non-annularity contained in the above-mentioned saturated composition and the above-mentioned saturated composition is become minute is the value of basis conversion by the lubricant base total amount.

Be explained, grade when carrying out compositional analysis to being saturated to minute to separate or the saturated composition of ring-type, non-annularity be saturated to, can use the similar approach that can obtain equifinality.For example, except aforesaid method, can enumerate the method for the method described in the method described in the ASTM D 2425-93, the ASTM D 2549-91, high performance liquid chromatography (HPLC) or with method behind these method improvements etc.

In addition, the aromatic component in the lubricant base of the present invention is as long as can make %C _A, %C _P/ %C _N, and iodine number satisfy above-mentioned condition, just do not have particular restriction, take the lubricant base total amount as benchmark, be preferably below the 7 quality %, more preferably below the 5 quality %, more preferably below the 4 quality %, be particularly preferably below the 3 quality %; In addition, be preferably more than the 0.1 quality %, more preferably more than the 0.5 quality %, more preferably more than the 1 quality %, be particularly preferably more than the 1.5 quality %.When the content of aromatic component surpasses above-mentioned higher limit, viscosity-temperature profile, thermal oxidation stability and rubbing characteristics and anti-volatility and low temperature viscosity characteristic all have the tendency of reduction, and then when cooperating additive in lubricant base, the effect of this additive has the tendency of reduction.In addition, lubricant base of the present invention also can not contain aromatic component, but the content by making aromatic component can further improve the solvability of additive more than above-mentioned lower value.

Be explained, said aromatic component refers to the value according to ASTM D2007-93 mensuration among the present invention.In the aromatic component, usually except alkylbenzene, alkylnaphthalene, comprise that also anthracene, phenanthrene and their alkylide and four above phenyl ring mutually condense the compound that forms, pyridines, quinoline, phenol, aphthols etc. and have heteroatomic aromatics etc.

In addition, the viscosity index of lubricant base of the present invention is preferably more than 110.If viscosity index is less than above-mentioned lower value, then viscosity-temperature profile and thermal oxidation stability and anti-volatility have the tendency of reduction.Be explained, the preferable range of the viscosity index of lubricant base of the present invention depends on the viscosity grade of lubricant base, so hereinafter it is described in detail.

About other proterties of lubricant base of the present invention, as long as %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, just do not have particular restriction, lubricant base of the present invention preferably has following various proterties.

In addition, the sulphur content in the lubricant base of the present invention depends on the sulphur content in its raw material.For example, when use the synthetic wax composition that made by Fischer-Tropsch reaction etc. such be substantially free of the raw material of sulphur the time, can obtain being substantially free of the lubricant base of sulphur.In addition, when the soft wax that obtains in the treating process of using at lubricant base or essence filtered the raw material of the sulfur-bearings such as Microcrystalline Wax that obtain in the journey, the sulphur content in the gained lubricant base was usually more than 100 quality ppm.In lubricant base of the present invention, consider from the viewpoint of further raising thermal oxidation stability and low sulfuration, sulphur content is preferably below the 100 quality ppm, more preferably below the 50 quality ppm, more preferably below the 10 quality ppm, be particularly preferably below the 5 quality ppm.

In addition, consider from the viewpoint that reduces cost, preferably use soft wax (gatch) etc. as raw material, at this moment, the sulphur content in the gained lubricant base is preferably below the 50 quality ppm, more preferably below the 10 quality ppm.Be explained, said sulphur content refers to the sulphur content according to JIS K 2541-1996 mensuration among the present invention.

In addition, do not have particular restriction for the nitrogen content in the lubricant base of the present invention, be preferably below the 5 quality ppm, more preferably below the 3 quality ppm, more preferably below the 1 quality ppm.When nitrogen content surpassed 5 quality ppm, thermal oxidation stability had the tendency of reduction.Be explained, said nitrogen content refers to the nitrogen content according to JIS K2609-1990 mensuration among the present invention.

In addition, as long as the kinematic viscosity of lubricant base of the present invention is %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, just do not have particular restriction, its kinematic viscosity in the time of 100 ℃ is preferably 1.5～20mm ²/ s, more preferably 2.0～11mm ²/ s.The kinematic viscosity of lubricant base in the time of 100 ℃ is less than 1.5mm ²During/s, consider not preferred from the vaporization losses aspect.In addition, the kinematic viscosity of wish acquisition in the time of 100 ℃ surpasses 20mm ²During the lubricant base of/s, its yield reduces, even if use pyroparaffine as the occasion of raw material, also is difficult to improve cleavage rate, so not preferred.

In the present embodiment, preferably the kinematic viscosity in the time of 100 ℃ is in lubricant base in the following ranges and waits by distillation and separate and use.(I) kinematic viscosity in the time of 100 ℃ is preferably 1.5mm ²/ s is above extremely less than 3.5mm ²/ s, 2.0～3.0mm more preferably ²The kinematic viscosity of the lubricant base of/s (II) in the time of 100 ℃ is preferably 3.0mm ²/ s is above extremely less than 4.5mm ²/ s, 3.5～4.1mm more preferably ²The kinematic viscosity of the lubricant base of/s (III) in the time of 100 ℃ is preferably 4.5～20mm ²/ s, 4.8～11mm more preferably ²/ s, be particularly preferably 5.5～8.0mm ²The lubricant base of/s.

In addition, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is preferably 6.0～80mm ²/ s, more preferably 8.0～50mm ²/ s.In the present embodiment, preferably the kinematic viscosity in the time of 40 ℃ is in lubricating oil distillate in the following ranges and waits by distillation and separate and use.(IV) kinematic viscosity in the time of 40 ℃ is preferably 6.0mm ²/ s is above extremely less than 12mm ²/ s, 8.0～12mm more preferably ²The kinematic viscosity of the lubricant base of/s (V) in the time of 40 ℃ is preferably 12mm ²/ s is above extremely less than 28mm ²/ s, 13～19mm more preferably ²The kinematic viscosity of the lubricant base of/s (VI) in the time of 40 ℃ is preferably 28～50mm ²/ s, 29～45mm more preferably ²/ s, be particularly preferably 30～40mm ²The lubricant base of/s.

By making above-mentioned lubricant base (I) and %C (IV) _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, its in the past lubricant base identical with viscosity grade is compared, especially the low temperature viscosity characteristic better, and significantly reduce viscous resistance and stir resistance.In addition, by cooperating pour point reducer, the BF viscosity in the time of can making-40 ℃ is below 2000mPas.Be explained, the BF viscosity in the time of-40 ℃ refers to the viscosity according to JPI-5S-26-99 mensuration.

In addition, by making above-mentioned lubricant base (II) and %C (V) _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, its in the past lubricant base identical with viscosity grade is compared, especially low temperature viscosity characteristic, anti-volatility and oilness are all better.For example, at lubricant base (II) with (V), the CCS viscosity in the time of can making-35 ℃ is below 3000mPas.

In addition, by making above-mentioned lubricant base (III) and %C (VI) _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, its in the past lubricant base identical with viscosity grade is compared, its low temperature viscosity characteristic, anti-volatility, thermal oxidation stability and oilness are all better.

And then the kinematic viscosity of lubricant base of the present invention is preferably according to suiting to select with the kind of the freezing air conditioner of refrigerator oil and the kind of cooling agent.For example, when using the refrigerator oil of the present embodiment in the freezing air conditioner that is using HFC cooling agent, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is considered from the viewpoint of wear resistance, is preferably 12mm ²More than/the s, 15mm more preferably ²More than/the s, 22mm more preferably ²More than/the s; In addition, consider from reducing the viewpoint that stirs resistance, be preferably 500mm ²Below/the s, 320mm more preferably ²Below/the s, 220mm more preferably ²Below/the s, be particularly preferably 150mm ²Below/the s.

When using Trimethylmethane to use the refrigerator oil of the present embodiment in as the refrigerator chamber (refrigerator) of hydro carbons cooling agent, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃, the viewpoint consideration from efficiency is preferably 32mm ²Below/the s, 22mm more preferably ²Below/the s, 12mm more preferably ²Below/the s; In addition, consider from the viewpoint of wear resistance, be preferably 4mm ²More than/the s, 6mm more preferably ²More than/the s, 8mm more preferably ²More than/the s.

In addition, when using propane to use the refrigerator oil of the present embodiment in as the air conditioning machinery of hydro carbons cooling agent, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is considered from the viewpoint of wear resistance, is preferably 12mm ²More than/the s, 22mm more preferably ²More than/the s, 32mm more preferably ²More than/the s.In addition, consider from reducing the viewpoint that stirs resistance, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is preferably 450mm ²Below/the s, 320mm more preferably ²Below/the s, 220mm more preferably ²Below/the s, be particularly preferably 150mm ²Below/the s.

In addition, when using the refrigerator oil of the present embodiment in the water-heater that is using carbon dioxide refrigerant, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is considered from the viewpoint of stopping property, is preferably 22mm ²More than/the s, 32mm more preferably ²More than/the s, 40mm more preferably ²More than/the s.In addition, consider from reducing the viewpoint that stirs resistance, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is preferably 450mm ²Below/the s, 320mm more preferably ²Below/the s, 220mm more preferably ²Below/the s, be particularly preferably 150mm ²Below/the s.

The viscosity index of lubricant base of the present invention is also relevant with the viscosity grade of lubricant base, and for example, above-mentioned lubricating oil (I) and viscosity index (IV) are preferably 105～130, and more preferably 110～125, more preferably 120～125.In addition, above-mentioned lubricant base (II) and viscosity index (V) are preferably 125～160, and more preferably 130～150, more preferably 135～150.In addition, above-mentioned lubricant base (III) and viscosity index (VI) are preferably 135～180, and more preferably 140～160.When viscosity index during less than above-mentioned lower value, viscosity-temperature profile and thermal oxidation stability and anti-volatility all have the tendency of reduction.In addition, when viscosity index surpassed above-mentioned higher limit, the low temperature viscosity characteristic had the tendency of reduction.

Be explained, said viscosity index refers to the viscosity index according to JIS K2283-1993 mensuration among the present invention.

In addition, the specific refractory power of lubricant base of the present invention in the time of 20 ℃ is also relevant with the viscosity grade of lubricant base, for example, above-mentioned lubricant base (I) and (IV) specific refractory power in the time of 20 ℃ be preferably below 1.455, more preferably below 1.453, more preferably below 1.451.In addition, above-mentioned lubricant base (II) and (V) specific refractory power in the time of 20 ℃ be preferably below 1.460, more preferably below 1.457, more preferably below 1.455.In addition, above-mentioned lubricant base (III) and (VI) specific refractory power in the time of 20 ℃ be preferably below 1.465, more preferably below 1.463, more preferably below 1.460.When specific refractory power surpasses above-mentioned higher limit, viscosity-the temperature profile of this lubricant base and thermal oxidation stability and anti-volatility and low temperature viscosity characteristic all have the tendency of reduction, in addition, when cooperating additive in this lubricant base, the effect of this additive has the tendency of reduction.

In addition, the pour point of lubricant base of the present invention is also relevant with the viscosity grade of lubricant base, and for example, above-mentioned lubricant base (I) and pour point (IV) are preferably below-10 ℃, more preferably-12.5 ℃, more preferably-15 ℃ below.In addition, above-mentioned lubricant base (II) and pour point (V) are preferably below-10 ℃, more preferably-15 ℃ below, more preferably-17.5 ℃ below.In addition, above-mentioned lubricant base (III) and pour point (VI) are preferably below-10 ℃, more preferably-12.5 ℃ below, more preferably-15 ℃ below.When pour point surpasses above-mentioned higher limit, use the low-temperature fluidity of the lubricating oil integral body of this lubricant base that the tendency of reduction is arranged.Be explained, said pour point refers to the pour point according to JIS K 2269-1987 mensuration among the present invention.

In addition, the CCS viscosity of lubricant base of the present invention in the time of-35 ℃ is also relevant with the viscosity grade of lubricant base, for example, above-mentioned lubricant base (I) and (IV) the CCS viscosity in the time of-35 ℃ be preferably below the 1000mPas.In addition, above-mentioned lubricant base (II) and (V) the CCS viscosity in the time of-35 ℃ be preferably below the 3000mPas, more preferably below the 2400mPas, more preferably below the 2000mPas.In addition, above-mentioned lubricant base (III) and (VI) the CCS viscosity in the time of-35 ℃ be preferably below the 15000mPas, more preferably below the 10000mPas.When the CCS viscosity when at-35 ℃ surpasses above-mentioned higher limit, use all low-temperature fluiditys of lubricating oil of this lubricant base that the tendency of reduction is arranged.Be explained, said CCS viscosity in the time of-35 ℃ refers to the viscosity according to JIS K2010-1993 mensuration among the present invention.

In addition, the density (ρ of lubricant base of the present invention in the time of 15 ℃ ₁₅, unit: g/cm ³) also relevant with the viscosity grade of lubricant base, be preferably below the ρ value by following formula (1) expression, i.e. preferred ρ ₁₅≤ ρ.[in the formula, kv100 represents the kinematic viscosity (mm of lubricant base in the time of 100 ℃ to ρ=0.0025 * kv100+0.820 (1) ²/ s)]

Be explained, work as ρ ₁₅During＞ρ, viscosity-temperature profile and thermal oxidation stability and anti-volatility and low temperature viscosity characteristic all have the tendency of reduction, and in addition, when cooperating additive in lubricant base, the effect of this additive has the tendency of reduction.

For example, above-mentioned lubricant base (I) and ρ (IV) ¹⁵Be preferably 0.825g/cm ³Below, 0.820g/cm more preferably ³Below.In addition, above-mentioned lubricant base (II) and ρ (V) ₁₅Be preferably 0.835g/cm ³Below, 0.830g/cm more preferably ³Below.In addition, above-mentioned lubricant base (III) and ρ (VI) ₁₅Be preferably 0.840g/cm ³Below, 0.835g/cm more preferably ³Below.

Be explained, said density in the time of 15 ℃ refers to the K2249-1995 according to JIS among the present invention, 15 ℃ of lower density of measuring.

In addition, the aniline point of lubricant base of the present invention (AP (℃)) also relevant with the viscosity grade of lubricant base, be preferably more than the value of the A that is represented by following formula (2), i.e. preferred AP 〉=A.[in the formula, kv100 represents the kinematic viscosity (mm of lubricant base in the time of 100 ℃ to A=4.1 * kv100+97 (2) ²/ s)]

Be explained, when AP＜A, viscosity-temperature profile and thermal oxidation stability and anti-volatility and low temperature viscosity characteristic all have the tendency of reduction, and in addition, when cooperating additive in lubricant base, the effect of this additive has the tendency of reduction.

For example, above-mentioned lubricant base (I) and AP (IV) are preferably more than 108 ℃, more preferably more than 110 ℃, more preferably more than 112 ℃.In addition, above-mentioned lubricant base (II) and AP (V) are preferably more than 113 ℃, more preferably more than 116 ℃, more preferably more than 118 ℃, are particularly preferably more than 120 ℃.In addition, above-mentioned lubricant base (III) and AP (VI) are preferably more than 125 ℃, more preferably more than 127 ℃, more preferably more than 128 ℃.Be explained, said aniline point refers to the aniline point according to JIS K 2256-1985 mensuration among the present invention.

In addition, NOACK steam output to lubricant base of the present invention does not have particular restriction, and for example, above-mentioned lubricant base (I) and NOACK steam output (IV) are preferably more than the 20 quality %, more preferably more than the 25 quality %, more preferably more than the 30 quality %; And, be preferably below the 50 quality %, more preferably below the 45 quality %, more preferably below the 42 quality %.In addition, above-mentioned lubricant base (II) and NOACK steam output (V) are preferably more than the 6 quality %, more preferably more than the 8 quality %, more preferably more than the 10 quality %; And, be preferably below the 20 quality %, more preferably below the 16 quality %, more preferably below the 15 quality %, be particularly preferably below the 14 quality %.In addition, above-mentioned lubricant base (III) and NOACK steam output (VI) are preferably more than the 1 quality %, more preferably more than the 2 quality %; And, be preferably below the 8 quality %, more preferably below the 6 quality %, more preferably below the 4 quality %.When the NOACK steam output was lower than above-mentioned lower value, the low temperature viscosity characteristic had the tendency that is difficult to improve.In addition, if the NOACK steam output surpasses respectively above-mentioned higher limit, then when lubricant base was used as lubricating oil for IC engines etc., the vaporization losses quantitative change of lubricating oil was large, thereupon promotes poisoning of catalyst, so not preferred.Be explained, said NOACK steam output refers to the evaporation loss according to ASTM D5800-95 mensuration among the present invention.

In addition, the distillation proterties of lubricant base of the present invention, preferably in the gas-chromatography distillation, initial boiling point (IBP) is 290～440 ℃, final boiling point (FBP) is 430～580 ℃, carry out rectifying by the cut more than a kind or 2 kinds in the cut that will be selected from above-mentioned distillation range, can obtain to have the lubricant base (I)～(III) of above-mentioned preferred viscosity ranges and (IV)～(VI).

For example, for above-mentioned lubricant base (I) and distillation proterties (IV), its initial boiling point (IBP) is preferably 260～360 ℃, and more preferably 300～350 ℃, more preferably 310～350 ℃.In addition, 10% recovered temperature (T10) is preferably 320～400 ℃, and more preferably 340～390 ℃, more preferably 350～380 ℃.In addition, 50% recovered temperature (T50) is preferably 350～430 ℃, and more preferably 360～410 ℃, more preferably 370～400 ℃.In addition, 90% recovered temperature (T90) is preferably 380～460 ℃, and more preferably 390～450 ℃, more preferably 400～440 ℃.In addition, final boiling point (FBP) is preferably 420～520 ℃, and more preferably 430～500 ℃, more preferably 440～480 ℃.In addition, T90-T10 is preferably 50～100 ℃, and more preferably 55～85 ℃, more preferably 60～70 ℃.In addition, FBP-IBP is preferably 100～250 ℃, and more preferably 110～220 ℃, more preferably 120～200 ℃.In addition, T10-IBP is preferably 10～80 ℃, and more preferably 15～60 ℃, more preferably 20～50 ℃.In addition, FBP-T90 is preferably 10～80 ℃, and more preferably 15～70 ℃, more preferably 20～60 ℃.

In addition, about above-mentioned lubricant base (II) and distillation proterties (V), its initial boiling point (IBP) is preferably 300～380 ℃, and more preferably 320～370 ℃, more preferably 330～360 ℃.In addition, 10% recovered temperature (T10) is preferably 340～420 ℃, and more preferably 350～410 ℃, more preferably 360～400 ℃.In addition, 50% recovered temperature (T50) is preferably 380～460 ℃, and more preferably 390～450 ℃, more preferably 400～460 ℃.In addition, 90% recovered temperature (T90) is preferably 440～500 ℃, and more preferably 450～490 ℃, more preferably 460～480 ℃.In addition, final boiling point (FBP) is preferably 460～540 ℃, and more preferably 470～530 ℃, more preferably 480～520 ℃.In addition, T90-T10 is preferably 50～100 ℃, and more preferably 60～95 ℃, more preferably 80～90 ℃.In addition, FBP-IBP is preferably 100～250 ℃, and more preferably 120～180 ℃, more preferably 130～160 ℃.In addition, T10-IBP is preferably 10～70 ℃, and more preferably 15～60 ℃, more preferably 20～50 ℃.In addition, FBP-T90 is preferably 10～50 ℃, and more preferably 20～40 ℃, more preferably 25～35 ℃.

In addition, about above-mentioned lubricant base (III) and distillation proterties (VI), its initial boiling point (IBP) is preferably 320～480 ℃, and more preferably 350～460 ℃, more preferably 380～440 ℃.In addition, 10% recovered temperature (T10) is preferably 420～500 ℃, and more preferably 430～480 ℃, more preferably 440～460 ℃.In addition, 50% recovered temperature (T50) is preferably 440～520 ℃, and more preferably 450～510 ℃, more preferably 460～490 ℃.In addition, 90% recovered temperature (T90) is preferably 470～550 ℃, and more preferably 480～540 ℃, more preferably 490～520 ℃.In addition, final boiling point (FBP) is preferably 500～580 ℃, and more preferably 510～570 ℃, more preferably 520～560 ℃.In addition, T90-T10 is preferably 50～120 ℃, and more preferably 55～100 ℃, more preferably 55～90 ℃.In addition, FBP-IBP is preferably 100～250 ℃, and more preferably 110～220 ℃, more preferably 115～200 ℃.In addition, T10-IBP is preferably 10～100 ℃, and more preferably 15～90 ℃, more preferably 20～50 ℃.In addition, FBP-T90 is preferably 10～50 ℃, and more preferably 20～40 ℃, more preferably 25～35 ℃.

In various lubricant bases (I)～(VI), by IBP, T10, T50, T90, FBP, T90-T10, FBP-IBP, T10-IBP, FBP-T90 are set in the above-mentioned preferable range, can further improve low temperature viscosity, and further reduce vaporization losses.Be explained, for all temps of T90-T10, FBP-IBP, T10-IBP and FBP-T90, if limit their distillation range narrow, the yield of lubricant base reduced, consider not preferred from the economy aspect.

Be explained, said IBP, T10, T50, T90 and FBP refer to respectively the recovered temperature according to ASTM D 2887-97 mensuration among the present invention.

In addition, the kish composition in the lubricant base of the present invention generally be in preparation technology, sneak into inevitably from metal ingredient contained in catalyzer and the raw material, preferably this kish composition is fully removed.For example, the content of Al, Mo, Ni is preferably respectively below the 1 quality ppm.When the content of these metal ingredients surpassed above-mentioned higher limit, there was the tendency that suffers damage in the function of the additive that cooperates in the lubricant base.

Be explained, said kish composition refers to the metal ingredient according to JPI-5S-38-2003 mensuration among the present invention.

In addition, lubricant base of the present invention is by making its %C _A, %C _P/ %C _N, and iodine number satisfy respectively above-mentioned condition, can realize good thermal oxidation stability, according to its kinematic viscosity, preferably demonstrate the following RBOT life-span.For example, above-mentioned lubricant base (I) and RBOT life-span (IV) are preferably more than the 300min, more preferably more than the 320min, more preferably more than the 330min.In addition, above-mentioned lubricant base (II) and RBOT life-span (V) are preferably more than the 350min, more preferably more than the 370min, more preferably more than the 380min.In addition, above-mentioned lubricant base (III) and RBOT life-span (VI) are preferably more than the 400min, more preferably more than the 410min, more preferably more than the 420min.When RBOT life-span during respectively less than above-mentioned lower value, the viscosity-temperature profile of lubricant base and thermal oxidation stability have the tendency of reduction, and then when cooperating additive in lubricant base, the effect of this additive has the tendency of reduction.

Be explained, the said RBOT life-span refers to a kind of by add phenol antioxidant (2,6-di-t-butyl-p-Cresol of 0.2 quality % in lubricant base among the present invention; DBPC) composition that forms is according to the RBOT value of JIS K 2514-1996 mensuration.

In the refrigerator oil of the present embodiment, can use separately the lubricant base of the invention described above, in addition, also can also using more than a kind or 2 kinds lubricant base of the present invention and other base oils.Be explained, with lubricant base of the present invention and other base oils and time spent, lubricant base of the present invention shared ratio in these mixed base oils is preferably more than the 30 quality %, more preferably more than the 50 quality %, more preferably more than the 70 quality %.

Can not have particular restriction with other base oils of lubricant base of the present invention and usefulness for conduct, as the mineral oils base oil, for example can enumerating, the kinematic viscosity in the time of 100 ℃ is 1～100mm ²The solvent treatment mineral oil of/s, hydrocracking mineral oil, hydrorefined mineral oils, solvent dewaxing basis wet goods.

In addition, as synthetic class base oil, can enumerate poly-alpha olefins or its hydride, isobutylene oligomer or its hydride, isoparaffin, alkylbenzene, alkylnaphthalene, diester (pentanedioic acid double tridecyl ester, di-2-ethylhexyl adipate, diisodecyl adipate, hexanodioic acid double tridecyl ester, Diisooctyl Sebacate etc.), polyol ester (is selected from neopentyl glycol, trimethylolethane, TriMethylolPropane(TMP), tri hydroxy methyl butane, tetramethylolmethane, in the polyvalent alcohols such as dipentaerythritol at least a kind be selected from valeric acid, caproic acid, enanthic acid, sad, n-nonanoic acid, capric acid, oleic acid, isovaleric acid, 2 methyl caproic acid, 2-ethyl valeric acid, 2 ethyl hexanoic acid, 3,5, the monoesters of at least a kind of formation in the lipid acid such as 5-tri-methyl hexanoic acid, diester, three esters, four esters etc., and their mixtures more than 2 kinds), polyether polyols, polyvingl ether, the dialkyl group phenyl ether, polyphenylene oxide etc., wherein, preferred poly-alpha olefins.As poly-alpha olefins, typically can enumerate oligopolymer or co-oligomer (1-octene oligopolymer, decylene oligomer, ethylene-propylene co-oligomer etc.) and their hydride of carbon number 2～32, preferred 6～16 alpha-olefin.

Method for making for poly-alpha olefins does not have particular restriction, for example can enumerate, in the presence of the polymerizing catalyst of the Knut Fridell that contains the title complex that is formed by aluminum chloride or boron trifluoride and water, alcohol (ethanol, propyl alcohol, butanols etc.), carboxylic acid or ester-Kerafyrm thatch (Friedel-Crafts) catalyzer and so on, make the method for alpha-olefine polymerizing.

The refrigerator oil of the present embodiment can only contain above-mentioned lubricant base, but in order further to improve its various performances, can further contain following various additives.

The refrigerator oil of the present embodiment is considered from the viewpoint of further raising wear resistance, preferably also contains Phosphorus extreme pressure agent.As Phosphorus extreme pressure agent, can enumerate amine salt, chloro phosphoric acid ester, phosphorous acid ester, thiophosphatephosphorothioate of phosphoric acid ester, phosphate ester acid, phosphate ester acid etc.

In the above-mentioned Phosphorus extreme pressure agent, the amine salt of phosphoric acid ester, phosphate ester acid, phosphate ester acid, chloro phosphoric acid ester and phosphorous acid ester are all the ester or its derivative that are formed by phosphoric acid or phosphorous acid and alkanol, polyether-type alcohol.

As phosphoric acid ester, can enumerate the tricresyl phosphate propyl ester, tributyl phosphate, TNPP tri n pentyl phosphate, tri hexyl phosphate, THP triheptylphosphate, trioctyl phosphate, trinonyl phosphate, tridecyl phosphate, tricresyl phosphate (undecyl) ester, tricresyl phosphate (dodecyl) ester, tricresyl phosphate (tridecyl) ester, tricresyl phosphate (tetradecyl) ester, tricresyl phosphate (pentadecyl) ester, tricresyl phosphate (hexadecyl) ester, tricresyl phosphate (heptadecyl) ester, tricresyl phosphate (octadecyl) ester, trioleyl phosphate, triphenylphosphate, Tritolyl Phosphate, tricresyl phosphate (xylyl) ester, phosphoric acid cresyl diphenyl ester, di(2-ethylhexyl)phosphate tolyl diphenyl ester etc.

As phosphate ester acid, can enumerate acid mono phosphoric acid ester propyl ester, acid mono phosphoric acid ester butyl ester, the acid phosphoric acid single fifth ester, the own ester of acid mono phosphoric acid ester, acid mono phosphoric acid ester heptyl ester, the acid mono-octyl phosphate, acid mono phosphoric acid ester ester in the ninth of the ten Heavenly Stems, acid mono phosphoric acid ester ester in the last of the ten Heavenly stems, acid mono phosphoric acid ester undecyl ester, acid mono phosphoric acid ester dodecyl ester, acid mono phosphoric acid ester tridecyl ester, acid mono phosphoric acid ester tetradecyl ester, acid mono phosphoric acid ester pentadecyl ester, acid mono phosphoric acid ester cetyl ester, acid mono phosphoric acid ester heptadecyl ester, acid mono phosphoric acid ester stearyl, the mono alkyl phosphates such as acid mono phosphoric acid ester oil base ester, dibutyl acid phosphate, acid di(2-ethylhexyl)phosphate pentyl ester, acid phosphoric acid dihexyl, acid di(2-ethylhexyl)phosphate heptyl ester, the acid dioctylphosphoric acid ester, acid di(2-ethylhexyl)phosphate ester in the ninth of the ten Heavenly Stems, the acid phosphoric acid didecyl ester, the two undecyl esters of acid phosphoric acid, the two dodecyl esters of acid phosphoric acid, acid phosphoric acid double tridecyl ester, the two tetradecyl esters of acid phosphoric acid, the two pentadecyl esters of acid phosphoric acid, acid phosphoric acid double hexadecyl ester, the two heptadecyl esters of acid phosphoric acid, the two stearyl of acid phosphoric acid, the phosphate dialkyl esters such as acid di(2-ethylhexyl)phosphate oil base ester and di(2-ethylhexyl)phosphate (alkyl) aryl ester etc.

As the amine salt of phosphate ester acid, can enumerate salt that is formed by amine such as above-mentioned phosphate ester acid and methylamine, ethamine, propylamine, butylamine, amylamine, hexylamine, heptyl amice, octylame, dimethylamine, diethylamine, dipropyl amine, dibutylamine, diamylamine, dihexylamine, two heptyl amices, Di-Octyl amine, Trimethylamine 99, triethylamine, tripropyl amine, Tributylamine, triamylamine, trihexylamine, three heptyl amices, trioctylamines etc.

As the chloro phosphoric acid ester, can enumerate tricresyl phosphate (two chloropropyls) ester, tricresyl phosphate (chloroethyl) ester, tricresyl phosphate (chloro-phenyl-) ester, polyoxy alkylidene-two [two (chlorine alkyl)] phosphoric acid ester etc.

As phosphorous acid ester, can enumerate dibutyl phosphite, the phosphorous acid diamyl ester, the phosphorous acid dihexyl, phosphorous acid two heptyl esters, dioctyl phosphite, phosphorous acid ester in two ninth of the ten Heavenly Stems, didecyl phosphite, the two undecyl esters of phosphorous acid, the two dodecyl esters of phosphorous acid, phosphorous acid two oil base esters, diphenyl phosphite, phosphorous acid diformazan phenyl ester, tributyl phosphate, the tricresyl phosphite pentyl ester, the own ester of tricresyl phosphite, the tricresyl phosphite heptyl ester, the tricresyl phosphite monooctyl ester, tris(nonyl phenyl) phosphate, tridecyl phosphite, tricresyl phosphite (undecyl) ester, tricresyl phosphite (dodecyl) ester, tricresyl phosphite oil base ester, triphenyl phosphite, tricresyl phosphite etc.

As thiophosphatephosphorothioate, the compound that is preferably represented by following general formula (4).[changing 1]

[in the formula, R ¹, R ²And R ³Can be identical or different, represent separately the alkyl of carbon number 1～24].

As R ¹～R ³The alkyl of the carbon number 1～24 of expression can be enumerated alkyl, cycloalkyl, thiazolinyl, alkyl-cycloalkyl, aryl, alkylaryl, arylalkyl etc. particularly.

As alkyl, can enumerate alkyl such as methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl (these alkyl can be the straight chain shapes, also can be chains).

As cycloalkyl, can enumerate carbon numbers such as cyclopentyl, cyclohexyl, suberyl and be 5～7 cycloalkyl.In addition, as the abovementioned alkyl cycloalkyl, can enumerate carbon numbers such as methylcyclopentyl, dimethylcyclopentyl, methylethyl cyclopentyl, diethyl cyclopentyl, methylcyclohexyl, Dimethylcyclohexyl, methylethyl cyclohexyl, diethyl cyclohexyl, methyl suberyl, dimethyl suberyl, methylethyl suberyl, diethyl suberyl and be 6～11 alkyl-cycloalkyl (alkyl the position of substitution on cycloalkyl also is arbitrarily).

As thiazolinyl, (these thiazolinyls can be the straight chain shapes can to enumerate thiazolinyls such as butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonene base, decene base, undecenyl, dodecenyl succinic, tridecylene base, tetradecene base, 15 carbene bases, cetene base, heptadecene base, vaccenic acid base, it also can be a chain, and the position of two keys also is arbitrarily).

As aryl, can enumerate aryl such as phenyl, naphthyl.In addition, as the abovementioned alkyl aryl, (alkyl can be the straight chain shape can to enumerate carbon numbers such as tolyl, xylyl, ethylphenyl, propyl group phenyl, butyl phenyl, amyl group phenyl, hexyl phenyl, heptyl phenyl, octyl phenyl, nonyl phenyl, decyl phenyl, undecyl phenyl, dodecylphenyl and be 7～18 alkylaryl, it also can be a chain, and the position of substitution on aryl also is arbitrarily).

As arylalkyl, can enumerate carbon numbers such as benzyl, phenylethyl, phenyl propyl, phenyl butyl, phenylpentyl, phenyl hexyl and be 7～12 arylalkyl (these alkyl can be the straight chain shapes, also can be chains).

Above-mentioned R ³～R ⁵The alkyl of the carbon number 1～24 of expression is preferably alkyl, aryl, alkylaryl, more preferably the alkyl of carbon number 4～18, the alkylaryl of carbon number 7～24, phenyl.

As the thiophosphatephosphorothioate of general formula (4) expression, can enumerate tributyl thiophosphate particularly, the thiophosphoric acid triamyl, the own ester of tri o cresyl thiophosphate, the tri o cresyl thiophosphate heptyl ester, the tri o cresyl thiophosphate monooctyl ester, tri o cresyl thiophosphate ester in the ninth of the ten Heavenly Stems, tri o cresyl thiophosphate ester in the last of the ten Heavenly stems, tri o cresyl thiophosphate (undecyl) ester, tri o cresyl thiophosphate (dodecyl) ester, tri o cresyl thiophosphate (tridecyl) ester, tri o cresyl thiophosphate (tetradecyl) ester, tri o cresyl thiophosphate (pentadecyl) ester, tri o cresyl thiophosphate (hexadecyl) ester, tri o cresyl thiophosphate (heptadecyl) ester, tri o cresyl thiophosphate (octadecyl) ester, tri o cresyl thiophosphate oil base ester, triphenyl-thiophosphate, thiophosphoric acid trimethylbenzene ester, tri o cresyl thiophosphate (xylyl) ester, thiophosphoric acid cresyl diphenyl ester, thiophosphoric acid xylyl diphenyl ester, tri o cresyl thiophosphate (n-propyl phenyl) ester, tri o cresyl thiophosphate (isopropyl phenyl) ester, tri o cresyl thiophosphate (n-butylphenyl) ester, tri o cresyl thiophosphate (isobutyl phenenyl) ester, tri o cresyl thiophosphate (secondary butyl phenenyl) ester, tri o cresyl thiophosphate (tert-butyl-phenyl) ester etc.In addition, also can use their mixture.

Above-mentioned Phosphorus extreme pressure agent can use separately a kind, perhaps also can will be used in combination more than 2 kinds, if the Phosphorus extreme pressure agent beyond thiophosphatephosphorothioate and this thiophosphatephosphorothioate is used in combination, just can further improves the oilness of the refrigerator oil of the present embodiment.

Content for the Phosphorus extreme pressure agent in the refrigerator oil of the present embodiment does not have particular restriction, take the refrigerator oil total amount as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.1 quality %.When the content of Phosphorus extreme pressure agent during less than 0.01 quality %, owing to the oilness of using Phosphorus extreme pressure agent to bring improves the effect inadequate tendency that becomes.In addition, the content of Phosphorus extreme pressure agent take the refrigerator oil total amount as benchmark, is preferably below the 5 quality %, more preferably below the 3 quality %, more preferably below the 1 quality %.Even the content of Phosphorus extreme pressure agent surpasses 5 quality %, also can not get improving effect with the corresponding oilness of content, in addition, might damage the stability of refrigerator oil.

In addition, the refrigerator oil of the present embodiment also can further contain oiliness improver.As this oiliness improver, can enumerate alcohols oiliness improver, carboxylic-acid oiliness improver, ester class oiliness improver etc.Be explained, for oiliness improver, will in the explanation of the 3rd embodiment, be described in detail.

In the refrigerator oil of the present embodiment, as oiliness improver, can use separately a kind in alcohols oiliness improver, carboxylic-acid oiliness improver and the ester class oiliness improver, perhaps, also can will be used in combination more than 2 kinds.

Although the content of oiliness improver is arbitrarily, but consider from the viewpoint that the raising effect of wear resistance and rubbing characteristics is good, to add up to total composition as benchmark, be preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %, more preferably more than the 0.1 quality %.In addition, about this content, from cooling agent atmosphere gas and the better viewpoint of the thermal oxidation stability of separating out preventive and refrigerator oil at low temperatures consider, take total composition as benchmark, be preferably below the 10 quality %, more preferably below the 7.5 quality %, more preferably below the 5 quality %.

In addition, the refrigerator oil of the present embodiment also can further contain epoxy compounds.Contain epoxy compounds in the refrigerator oil by making, can improve the stability of refrigerator oil.

As epoxy compounds, the preferred at least a kind of epoxy compounds from phenylglycidyl ether type epoxy compounds, alkyl glycidyl base ether type epoxy compounds, glycidyl esters type epoxy compounds, allyl group epoxy compounds, alkyl epoxy compound, alicyclic epoxy compound, epoxidized fatty acid monoesters and epoxidized vegetable oil, selecting that uses.

As phenylglycidyl ether type epoxy compounds, can enumerate particularly phenylglycidyl ether or alkyl phenyl glycidyl ether.As said alkyl phenyl glycidyl ether herein, can enumerate and have the epoxy compounds that 1～3 carbon number is 1～13 alkyl, wherein, can enumerate as preference and to have the epoxy compounds that 1 carbon number is 4～10 alkyl, for example n-butylphenyl glycidyl ether, the isobutyl phenenyl glycidyl ether, the secondary butyl phenenyl glycidyl ether, the tert-butyl-phenyl glycidyl ether, the amyl group phenylglycidyl ether, the hexyl phenylglycidyl ether, the heptyl phenylglycidyl ether, the octyl phenyl glycidyl ether, the nonyl phenylglycidyl ether, decyl phenyl glycidyl ether etc.

As alkyl glycidyl base ether type epoxy compounds, can enumerate the decyl glycidyl ether particularly, the undecyl glycidyl ether, the dodecyl glycidyl ether, the tridecyl glycidyl ether, the tetradecyl glycidyl ether, 2-ethylhexyl glycidyl ether, the dimethyltrimethylene glycol diglycidyl ether, the trimethylolpropane tris glycidyl ether, tetramethylolmethane four glycidyl group ether, 1,6-hexylene glycol diglycidyl ether, Sorbitol Powder poly epihydric alcohol base ether, the polyalkylene glycol mono glycidyl ether, polyalkylene glycol diglycidyl ether etc.

As glycidyl esters type epoxy compounds, can enumerate particularly the compound of following general formula (5) expression.[changing 2]

[in the formula, R ⁴The alkyl of expression carbon number 1～18].

In the above-mentioned formula (5), as R ⁴The alkyl of the carbon number 1～18 of expression can be enumerated the alkyl of carbon number 1～18, the thiazolinyl of carbon number 2～18, the cycloalkyl of carbon number 5～7, the alkyl-cycloalkyl of carbon number 6～18, the aryl of carbon number 6～10, the alkylaryl of carbon number 7～18, the arylalkyl of carbon number 7～18 etc.Wherein, alkyl, thiazolinyl, the phenyl of carbon number 2～15 and the alkyl phenyl with alkyl of carbon number 1～4 of preferred carbon number 5～15.

In the glycidyl esters type epoxy compounds, as preference, for example can enumerate particularly 2,2-dimethyl-octa acid glycidyl base ester, phenylformic acid glycidyl esters, p t butylbenzoic acid glycidyl esters, vinylformic acid glycidyl esters, methyl propenoic acid glycidyl base ester etc.

As the allyl group epoxy compounds, can enumerate particularly 1,2-epoxy styrene, alkyl-1,2-epoxy styrene etc.

As the alkyl epoxy compound, can enumerate 1,2-butylene oxide ring, 1 particularly, 2-epoxy pentane, 1,2-epoxy hexane, 1,2-epoxy heptane, 1,2-octylene oxide, 1,2-epoxy nonane, 1,2-epoxy decane, 1,2-epoxy undecane, 1,2-epoxy dodecane, 1,2-epoxy tridecane, 1, the 2-epoxy tetradecane, 1,2-epoxy pentadecane, 1,2-epoxy n-Hexadecane, 1,2-epoxy heptadecane, 1,1,2-epoxy octadecane, 2-Disparmone, 1,2-epoxy eicosane etc.

As the alicyclic epoxy compound, can enumerate and directly consist of the compound of ester ring type ring by the carbon atom that consists of epoxy group(ing) the compound that resembles following general formula (6) expression.[changing 3]

As the alicyclic epoxy compound, can enumerate 1 particularly, the 2-epoxy cyclohexane, 1, the 2-cyclopentane epoxide, 3,4-epoxycyclohexyl methyl-3, the 4-epoxycyclohexane carboxylate, two (3,4-epoxycyclohexyl methyl) adipic acid ester, external form-2,3-epoxy norbornane, two (3,4-epoxy-6-methyl cyclohexane ylmethyl) adipic acid ester, 2-(7-oxabicyclo [4.1.0] heptan-3-yl)-spiral shell (1,3-diox-5,3 '-[7] oxabicyclo [4.1.0] heptane, 4-(1 '-methyl epoxy ethyl)-1,2-epoxy-2-methylcyclohexane, 4-epoxy ethyl-HEO etc.

As the epoxidized fatty acid monoesters, can enumerate particularly ester that the alcohol of the lipid acid of epoxidised carbon number 12～20 and carbon number 1～8 or phenol, alkylphenol form etc.Particularly preferably use the butyl ester of epoxystearic acid, own ester, benzyl ester, cyclohexyl, methoxyl group ethyl ester, monooctyl ester, phenyl ester and butyl phenyl ester.

As epoxidized vegetable oil, can enumerate particularly the epoxy compounds of soybean oil, Semen Lini oil, cottonseed wet goods vegetables oil etc.

In these epoxy compoundss, consider from the viewpoint of further raising thermal oxidation stability, preferred phenylglycidyl ether type epoxy compounds, glycidyl esters type epoxy compounds, alicyclic epoxy compound, epoxidized fatty acid monoesters, more preferably glycidyl esters type epoxy compounds, alicyclic epoxy compound.

In the present embodiment, can use separately a kind in the above-mentioned epoxy compounds, perhaps also can will be used in combination more than 2 kinds.

When containing above-mentioned epoxy compounds in the refrigerator oil of the present embodiment, its content there is not particular restriction, take the refrigerator oil total amount as benchmark, be preferably more than the 0.01 quality %, more preferably more than the 0.1 quality %.When the content of epoxy compounds during less than 0.01 quality %, the thermal oxidation stability of refrigerator oil improves the effect inadequate tendency that becomes.In addition, the content of epoxy compounds take the refrigerator oil total amount as benchmark, is preferably below the 5 quality %, more preferably below the 3 quality %, more preferably below the 1 quality %.If the content of epoxy compounds surpasses 5 quality %, the water absorbability of refrigerator oil will improve, thereby moisture easily is blended in the refrigeration system, exists can not effectively bring into play because the stability of using epoxy compounds to bring improves the tendency of effect.

And then, in the refrigerator oil of the present embodiment, in order further to improve its performance, can also be as required, make wherein individually or several contain phenol antioxidant, phenyl-a-naphthylamine, the N such as ditertbutylparacresol, dihydroxyphenyl propane, the additives such as the defoamers such as the oiliness improvers such as extreme pressure agent, lipid acid, type siloxane, viscosity index improver, pour point reducer, detergent-dispersant additive such as the anti-wear agents such as amine antioxidants, zinc dithiophosphate, chloroalkane hydrocarbon, sulphur compound such as N-two (2-naphthyl) Ursol D in combination.Content to these additives does not have particular restriction, and their total content take the refrigerator oil total amount as benchmark, is preferably below the 10 quality %, more preferably below the 5 quality %.

Volume specific resistance for the refrigerator oil of the present embodiment does not have particular determination, is preferably 1.0 * 10 ⁹More than the Ω cm.Especially, when being used for the hermetic type refrigerator, exist the tendency that needs high electrical insulating property.Be explained, said volume specific resistance refers to the value under 25 ℃ [Ω cm] according to JIS C 2101 " electric insulation oil test method " mensuration herein.

And then, there is not particular determination for the moisture content of the refrigerator oil of the present embodiment, take the refrigerator oil total amount as benchmark, be preferably below the 200ppm, more preferably below the 100ppm, most preferably be below the 50ppm.Especially, when being used for the refrigerator of hermetic type, consider from the thermal oxidation stability of refrigerator oil with on the viewpoint of the impact of electrical insulating property, require moisture content few.

And then, acid number for the refrigerator oil of the present embodiment does not have particular determination, for the corrosion of metal that prevents from using in freezing air conditioner or the pipe arrangement, be preferably below the 0.5mgKOH/g, more preferably below the 0.3mgKOH/g, more preferably below the 0.1mgKOH/g, be particularly preferably below the 0.05mgKOH/g.Be explained, said acid number refers to the value [mgKOH/g] according to JIS K 2501 " petroleum product and lubricating oil-neutralization value test method " mensuration herein.

And then, there is not particular determination for the ash content of the refrigerator oil of the present embodiment, for the thermal hydrolysis stability of the refrigerator oil that improves the present embodiment, and suppress the generation of sludge etc., ash content is preferably below the 100ppm, more preferably below the 50ppm.Be explained, in the present invention, ash content refers to the value [ppm] according to JIS K 2272 " ash content of crude oil and petroleum product and sulphated ash test method " mensuration.

Refrigerator oil with the present embodiment of above-mentioned formation can be brought into play good wear resistance and rubbing characteristics in the presence of cooling agent, can realize the raising of long-term reliability of freezing air conditioner and energy-saving both.Herein, with the common cooling agent that uses of the refrigerator oil of the present embodiment, preferably jointly use with the non-fluorine-containing ethers cooling agent such as the fluorine-containing ethers cooling agent such as HFC cooling agent, perfluor ethers, dme and the natural refrigerant such as carbonic acid gas or hydrocarbon.These cooling agent can use separately a kind, also can use with the mixture more than 2 kinds.

As HFC cooling agent, can enumerate carbon number 1～3, preferred 1～2 hydrogen fluorohydrocarbon.Can enumerate particularly for example methylene fluoride (HFC-32), trifluoromethane (HFC-23), pentafluoride ethane (HFC-125), 1,1,2,2-Tetrafluoroethane (HFC-134), 1,1,1,2-Tetrafluoroethane (HFC-134a), 1,1,1-Halothane (HFC-143a), 1, the HFC such as 1-C2H4F2 C2H4F2 (HFC-152a) or their mixture more than 2 kinds etc.These cooling agent are according to purposes and require performance to suit to select, and as preference, can enumerate for example independent HFC-32; Independent HFC-23; Independent HFC-134a; Independent HFC-125; The mixture of HFC-134a/HFC-32=60～80 quality %/40～20 quality %; The mixture of HFC-32/HFC-125=40～70 quality %/60～30 quality %; The mixture of HFC-125/HFC-143a=40～60 quality %/60～40 quality %; The mixture of HFC-134a/HFC-32/HFC-125=60 quality %/30 quality %/10 quality %; The mixture of HFC-134a/HFC-32/HFC-125=40～70 quality %/15～35 quality %/5～40 quality %; The mixture of HFC-125/HFC-134a/HFC-143a=35～55 quality %/1～15 quality %/40～60 quality % etc.More specifically can enumerate the mixture of HFC-134a/HFC-32=70/30 quality %; The mixture of HFC-32/HFC-125=60/40 quality %; The mixture (R410A) of HFC-32/HFC-125=50/50 quality %; The mixture (R410B) of HFC-32/HFC-125=45/55 quality %; The mixture (R507C) of HFC-125/HFC-143a=50/50 quality %; The mixture of HFC-32/HFC-125/HFC-134a=30/10/60 quality %; The mixture (R407C) of HFC-32/HFC-125/HFC-134a=23/25/52 quality %; The mixture (R407E) of HFC-32/HFC-125/HFC-134a=25/15/60 quality %; The mixture (R404A) of HFC-125/HFC-134a/HFC-143a=44/4/52 quality % etc.

In addition, as natural refrigerant, can enumerate hydro carbons cooling agent, carbon dioxide refrigerant, ammonia etc.As hydro carbons cooling agent, preferably use under 25 ℃, 1 atmospheric condition the cooling agent as gas.Be in particular carbon number 1～5, preferred 1～4 paraffinic hydrocarbons, naphthenic hydrocarbon, alkene or their mixture.Can enumerate particularly methane, ethene, ethane, propylene, propane, cyclopropane, butane, Trimethylmethane, tetramethylene, methyl cyclopropane or mixture more than 2 kinds etc. in them.Wherein, preferably propane, butane, Trimethylmethane or their mixture.

The refrigerator oil of the present embodiment usually, in refrigerator (for example, freezing air conditioner), exists with the form of the refrigerator fluid composition that mixes with cooling agent as described above.In this fluid composition, the mixing ratio of refrigerator oil and cooling agent does not have particular restriction, and with respect to cooling agent 100 mass parts, refrigerator oil is preferably 1～500 mass parts, more preferably 2～400 mass parts.

The refrigerator oil of the present embodiment can balance fully satisfies well oilness, cooling agent intermiscibility, low-temperature fluidity, stability etc. and all requires performance, can suitably be used for having the refrigerator of reciprocating type or revolving style of opening or semi closed type or hermetic type compressor or heat pump etc.Especially, in the occasion for the refrigerator that uses leaded bearing, can take into account with high level and suppress plumbous stripping and heat and chemical stability from leaded bearing.As refrigerating apparatus, the refrigerating unit, dwelling house that more specifically can enumerate vehicle air conditioner, moisture trap, refrigerator chamber, freezing and refrigeration warehouse, Vending Machine, show case, chemical device etc. with air conditioning machinery, box air conditioning machinery (package air conditioner), supplying hot water with heat pump etc.And then the refrigerator oil of the present embodiment also can be used for the compressor of any form such as reciprocating type, rotary, centrifugal.

Formation as the refrigerant circulating system of the refrigerator oil that can suitably use the present embodiment, can enumerate typically coolant compressor, condenser, expansion gear, vaporizer are connected by stream respectively by this order, and in this stream, possess as required the formation of moisture eliminator.

As coolant compressor, can list: the engine that is made of rotor and stator is installed in storing the encloses container of refrigerator oil, is embedded in turning axle, the swivel bearing (leaded bearing) in the rotor and is situated between and be connected to compressor section on the engine by turning axle, be trapped in the compressor of the high pressure vessel mode in the encloses container from the high pressure refrigerant gas of compressor section ejection; And, the engine that is made of rotor and stator be installed in storing the encloses container of refrigerator oil, be embedded in turning axle in the rotor, swivel bearing (leaded bearing) and be connected to compressor section on the engine by turning axle, directly be discharged to the compressor etc. of the low pressure vessel mode outside the encloses container from the high pressure refrigerant gas of compressor section ejection.

Insulation film as the electrical machine insulation system material that belongs to engine section, be the crystalline plastic film of second-order transition temperature more than 50 ℃, particularly, preferably use from polyethylene terephthalate, polybutylene terephthalate, polyphenylene sulfide, polyether-ether-ketone, PEN, polyamidoimide, at least a insulation film of selecting in the polyimide, the perhaps high resin layer of cover glass transition temperature and the laminated film that forms on the low film of second-order transition temperature are because these films are difficult for occuring the deteriorated of tensile strength characteristic and electrical insulation characteristics.In addition, as the magnetic wire that in engine section, uses, the preferred magnetic wire that coats with the enamel paint of second-order transition temperature more than 120 ℃ that uses is such as enumerating enamel paint encapsulated magnet wire that coat with individual layers such as polyester, polyester-imide, polymeric amide and polyamidoimides or take the low layer of second-order transition temperature as lower floor, take the high layer of second-order transition temperature as the upper strata compound coating.As the bag lacquer line of compound coating, the bag that can enumerate take polyester-imide as lower floor, coat as the upper strata take polyamidoimide coats with lacquer line (AI/EI); The bag that coats as the upper strata take polyester as lower floor, take polyamidoimide coats with lacquer line (AI/PE) etc.

As the siccative of filling in the moisture eliminator, preferably use pore aperture 3.3

Below, the carbon dioxide absorptive capacity during the carbon dioxide dividing potential drop 250mmHg under 25 ℃ is the synthetic zeolite that is made of silicic acid, alkali aluminate bimetallic salt complex below 1.0%.Can enumerate particularly clear trade(brand)name XH-9, XH-10, XH-11, the XH-600 etc. that make with (strain) of ュ ニ オ Application.

(the 2nd embodiment; Compressor oil composition) compressor oil composition of the 2nd embodiment of the present invention contains lubricant base, antioxidant and the antimist agent of the invention described above.

Be explained, in the compressor oil composition of the present embodiment, the scheme of lubricant base of the present invention is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, in the compressor oil composition of the present embodiment, can use separately the lubricant base of the invention described above, in addition, also can be with also using more than a kind or 2 kinds in lubricant base of the present invention and other base oils.Be explained, the concrete example of other base oils and lubricant base of the present invention shared ratio in mixed base oil is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, the compressor oil composition of the present embodiment contains antioxidant.As this antioxidant, can enumerate the organo-metallic class antioxidants such as amine antioxidants, phenol antioxidant, zinc dithiophosphate etc.Wherein, when in the lubricant base that is coupled to the invention described above, consider preferred amine antioxidants and phenol antioxidant from the viewpoint that can keep more chronically the oxidation-resistance under the high temperature.

As amine antioxidants, can enumerate phenyl-a-naphthylamine compounds, dialkyl diphenylamine compounds, benzylamine compound and polyamine compounds, wherein, preferred phenyl-a-naphthylamine compounds, alkyl diphenyl aminated compounds.

As the phenyl-a-naphthylamine compounds, preferably use the phenyl-a-naphthylamine of following general formula (7) expression.[changing 4] [in the formula (7), R ⁵The alkyl of the straight or branched of expression hydrogen atom or carbon number 1～16].

R in general formula (7) ⁵During for alkyl, this alkyl is the alkyl of the straight or branched of carbon number 1～16 as mentioned above.As this alkyl, can enumerate particularly such as methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl and hexadecyl etc. (these alkyl can be the straight chain shapes, also can be chains).Be explained, work as R ¹Carbon number surpass at 16 o'clock, functional group's shared ratio in molecule diminishes, and might disadvantageous effect be arranged to antioxidant property.

R in general formula (7) ⁵During for alkyl, consider R from the viewpoint that solvability is good ⁵Be preferably the branched-chain alkyl of carbon number 8～16, more preferably by the branched-chain alkyl of the derivative carbon number 8～16 of the oligopolymer of the alkene of carbon number 3 or 4.As the alkene of carbon number 3 or 4, can enumerate propylene, 1-butylene, 2-butylene and iso-butylene particularly, consider preferred propylene or iso-butylene from the viewpoint that solvability is good.In order to obtain better solvability, R ⁵More preferably by the derivative side chain octyl group of 2 polymers of iso-butylene, by the derivative side chain nonyl of 3 polymers of propylene, by the derivative side chain dodecyl of 3 polymers of iso-butylene, by the derivative side chain dodecyl of 4 polymers of propylene or by the derivative side chain pentadecyl of 5 polymers of propylene, particularly preferably by the derivative side chain octyl group of 2 polymers of iso-butylene, by the derivative side chain dodecyl of 3 polymers of iso-butylene or by the derivative side chain dodecyl of 4 polymers of propylene.

As the phenyl-a-naphthylamine of general formula (7) expression, can use commercially available product, perhaps also can use synthetics.Synthetics can be by using friedel-crafts catalysts, carries out the reaction of the olefin oligomer of the alkene of the reaction of halogenated alkyl compounds of phenyl-a-naphthylamine and carbon number 1～16 or phenyl-a-naphthylamine and carbon number 2～16 or carbon number 2～16 and easily synthesize.As friedel-crafts catalysts, particularly can example such as, metal halides such as aluminum chloride, zinc chloride, iron(ic) chloride; An acidic catalysts such as sulfuric acid, phosphoric acid, five phosphorus oxide, boron fluoride, acidic white earth, atlapulgite; Deng.

As the dialkyl diphenylamine compounds, preferably use the p of following general formula (8) expression, p '-dialkyl diphenylamine.[changing 5]

[in the formula (8), R ⁶And R ⁷Can be identical or different, represent separately the alkyl of carbon number 1～16].

As R ⁶And R ⁷The alkyl of expression, can enumerate particularly methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl etc. (these alkyl can be the straight chain shapes, also can be chains).Wherein, consider from the viewpoint that can keep more chronically oxidation-resistance at high temperature, as R ⁶And R ⁷, the branched-chain alkyl of preferred carbon number 3～16, more preferably carbon number 3 or 4 alkene or by the branched-chain alkyl of the derivative carbon number 3～16 of its oligopolymer.As the alkene of carbon number 3 or 4, can enumerate propylene, 1-butylene, 2-butylene and iso-butylene etc. particularly, consider preferred propylene or iso-butylene from the viewpoint that can keep more chronically oxidation-resistance at high temperature.In addition, as R ⁶Perhaps R ⁷Consider from the viewpoint that obtains better oxidation-resistance, more preferably be the sec.-propyl by propylene derived separately, by the derivative tertiary butyl of iso-butylene, by the derivative side chain hexyl of 2 polymers of propylene, by the derivative side chain octyl group of 2 polymers of iso-butylene, by the derivative side chain nonyl of 3 polymers of propylene, by the derivative side chain dodecyl of 3 polymers of iso-butylene, by the derivative side chain dodecyl of 4 polymers of propylene or by the derivative side chain pentadecyl of 5 polymers of propylene, most preferably by the derivative tertiary butyl of iso-butylene, by the derivative side chain hexyl of 2 polymers of propylene, by the derivative side chain octyl group of 2 polymers of iso-butylene, by the derivative side chain nonyl of 3 polymers of propylene, by the derivative side chain dodecyl of 3 polymers of iso-butylene or by the derivative side chain dodecyl of 4 polymers of propylene.

Be explained, if use R ⁶And R ⁷In a side or both sides be the compound of hydrogen atom, then might produce sludge owing to the oxidation of this compound itself.In addition, when the carbon number of alkyl surpassed 16, functional group's shared ratio in molecule diminished, and oxidation-resistance at high temperature might reduce.

The p of general formula (8) expression, p '-dialkyl diphenylamine can be used commercially available product, perhaps also can use synthetics.Synthetics can be by using friedel-crafts catalysts, carry out the halogenated alkyl compounds of pentanoic and carbon number 1～16 and the reaction of pentanoic, perhaps the reaction of the alkene of the alkene of pentanoic and carbon number 2～16 or carbon number 2～16 or their oligopolymer is easily synthesized.As friedel-crafts catalysts, can use illustrated metal halide or an acidic catalyst etc. in the explanation of phenyl-a-naphthylamine.

The compound of above-mentioned general formula (7), (8) expression is aromatic amine.These aromatic amines can use separately a kind, also can use the different mixture more than 2 kinds of structure, consider from the viewpoint that can keep more chronically oxidation-resistance at high temperature, preferably with the phenyl-a-naphthylamine of general formula (7) expression and the p of general formula (8) expression, p '-dialkyl diphenylamine is also used.The ratio of mixture of this occasion is arbitrarily, and meter preferably is in 1/10～10/1 the scope in mass ratio.

As phenolic compound, can use the arbitrarily alkylphenol compounds as the antioxidant use of lubricating oil, this is not had particular determination, can enumerate at least a kind of alkylphenol compound for example from the compound of following general formula (9), general formula (10) and general formula (11) expression, selecting as preference.

[changing 6]

[in the formula (9), R ⁸The alkyl of expression carbon number 1～4; R ⁹The alkyl of expression hydrogen atom or carbon number 14; R ¹⁰The alkyl of expression hydrogen atom, carbon number 1～4, by following general formula (i) or (ii) group of expression: [changing 7]

(in the general formula (i), R ¹¹The alkylidene group of expression carbon number 1～6; R ¹²Alkyl or the thiazolinyl of expression carbon number 1～24).[changing 8]

(in the general formula (ii), R ¹³The alkylidene group of expression carbon number 1～6; R ¹⁴The alkyl of expression carbon number 1～4; R ¹⁵The alkyl of expression hydrogen atom or carbon number 1～4; K represents 0 or 1)].

[changing 9]

[in the general formula (10), R ¹⁶And R ¹⁸Can be identical or different, represent separately the alkyl of carbon number 1～4; R ¹⁷And R ¹⁹Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～4; R ²⁰And R ²¹Can be identical or different, represent separately the alkylidene group of carbon number 1～6; A represents the alkylidene group of carbon number 1～18 or the group that is represented by following general formula (iii) :-R ²²-S-R ²³-(iii) (in the general formula (iii), R ²²And R ²³Can be identical or different, represent separately the alkylidene group of carbon number 1～6)].

[changing 10]

[in the general formula (11), R ²⁴The alkyl of expression carbon number 1～4; R ²⁵The alkyl of expression hydrogen atom or carbon number 1～4; R ²⁶The alkylidene group of expression carbon number 1～6 or the group that is represented by following general formula (iv): [changing 11] (in the general formula (iv), R ²⁷And R ²⁸Can be identical or different, represent separately the alkylidene group of carbon number 1～6)].

In the compound of above-mentioned general formula (9) expression, for R ¹⁰Be the compound of the group of general formula (i) expression, the more preferably R in the general formula (i) ¹¹Be the alkylidene group of carbon number 1～2, R ¹²Be straight chain shape or the branched-chain alkyl of carbon number 6～12, particularly preferably the R in the general formula (i) ¹¹Be the alkylidene group of carbon number 1～2, R ¹²Branched-chain alkyl for carbon number 6～12.

In the compound by general formula (9) expression, below preferred compound is shown in.

As R ¹⁰The example of the compound during for the alkyl of carbon number 1～4 can be enumerated 2,6 ditertiary butyl p cresol, 2,6-di-t-butyl-4-ethylphenol etc.

As R ¹⁰The example of the compound during for the group of general formula (i) expression, can enumerate following compound: (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) n-hexyl acetate, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) methyl amyl acetate, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) positive heptyl ester of acetic acid, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid isocyanate, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid n-octyl, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) 2-ethyl hexyl ethanoate, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid 2-ethylhexyl, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) n-nonyl acetate, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) vanoris, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid ester in the positive last of the ten Heavenly stems, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid isodecyl ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid n-undecane base ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) different undecyl ester of acetic acid, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid dodecyl ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) acetic acid Permethyl 99A. base ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) just own ester of propionic acid, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid dissident ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) positive heptyl ester of propionic acid, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid isocyanate, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid n-octyl, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) different monooctyl ester of propionic acid, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid 2-ethylhexyl, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid ester in the positive ninth of the ten Heavenly Stems, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid ester in the different ninth of the ten Heavenly Stems, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid ester in the positive last of the ten Heavenly stems, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid isodecyl ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid n-undecane base ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) different undecyl ester of propionic acid, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid dodecyl ester, (the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) propionic acid Permethyl 99A. base ester, (3,5-di-t-butyl-4-hydroxyphenyl) n-hexyl acetate, (3,5-di-t-butyl-4-hydroxyphenyl) methyl amyl acetate, (3,5-di-t-butyl-4-hydroxyphenyl) the positive heptyl ester of acetic acid, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid isocyanate, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid n-octyl, (3,5-di-t-butyl-4-hydroxyphenyl) 2-ethyl hexyl ethanoate, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid 2-ethylhexyl, (3,5-di-t-butyl-4-hydroxyphenyl) n-nonyl acetate, (3,5-di-t-butyl-4-hydroxyphenyl) vanoris, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid ester in the positive last of the ten Heavenly stems, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid isodecyl ester, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid n-undecane base ester, (3,5-di-t-butyl-4-hydroxyphenyl) the different undecyl ester of acetic acid, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid dodecyl ester, (3,5-di-t-butyl-4-hydroxyphenyl) acetic acid Permethyl 99A. base ester, (3,5-di-t-butyl-4-hydroxyphenyl) the just own ester of propionic acid, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid dissident ester, (3,5-di-t-butyl-4-hydroxyphenyl) the positive heptyl ester of propionic acid, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid isocyanate, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid n-octyl, (3,5-di-t-butyl-4-hydroxyphenyl) the different monooctyl ester of propionic acid, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid 2-ethylhexyl, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid ester in the positive ninth of the ten Heavenly Stems, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid ester in the different ninth of the ten Heavenly Stems, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid ester in the positive last of the ten Heavenly stems, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid isodecyl ester, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid n-undecane base ester, (3,5-di-t-butyl-4-hydroxyphenyl) the different undecyl ester of propionic acid, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid dodecyl ester, (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid Permethyl 99A. base ester etc.

As R ¹⁰The example of the compound during for the group of general formula (ii) expression, can enumerate two (3,5-di-t-butyl-4-hydroxyphenyl), two (3,5-di-t-butyl-4-hydroxyphenyl) methane, 1,1-two (3,5-di-t-butyl-4-hydroxyphenyl) ethane, two (3, the 5-di-t-butyl-4-hydroxyphenyl) ethane of 1,2-, 1,1-two (3,5-di-t-butyl-4-hydroxyphenyl) propane, two (3, the 5-di-t-butyl-4-hydroxyphenyl) propane of 1,2-, 1,3-two (3,5-di-t-butyl-4-hydroxyphenyl) propane, two (3,5-di-t-butyl-4-hydroxyphenyl) propane of 2,2-etc.; And their mixture more than 2 kinds etc.

The following describes the alkylphenol by general formula (10) expression.

Particularly preferred compound when the A in the general formula (10) is the alkylidene group of carbon number 1～18 is the compound of following formula (10-1) expression.[changing 12]

In addition, the particularly preferred compound the when A in the general formula (10) is the group of formula (iii) expression is the compound of following formula (10-2) expression.[changing 13]

The following describes the alkylphenol by general formula (11) expression.

As the particularly preferred compound of the alkylphenol of general formula (11) expression, be in particular following formula (11-1) or (11-2) compound of expression.[changing 14]

[changing 15]

The content of antioxidant take total composition as benchmark, is preferably 0.02～5 quality %, more preferably 0.1～3 quality %.When the content of antioxidant during less than 0.02 quality %, the thermal oxidation stability inadequate tendency that becomes.On the other hand, when surpassing 5 quality %, can not get the raising effect with the corresponding thermal oxidation stability of content, unfavorable economically, be not preferred therefore.

In addition, the compressor oil composition of the present embodiment contains antimist agent.As this antimist agent, the methacrylic ester of the alkyl of the preferred acrylate that uses the alkyl that contains carbon number 1～18, carbon number 1～18, alkene, vinylbenzene, vinyl toluene, maleic anhydride and their mixture more than 2 kinds of carbon number 2～20 are as the macromolecular compound that consists of monomer.The weight-average molecular weight of this macromolecular compound is arbitrarily, is preferably 1,000～300,000, more preferably 5,000～100,000.

As antimist agent, can use the arbitrarily compound that uses as the antimist agent of lubricating oil, preference is as containing nitrogen containing monomer with ethylenic unsaturated bond as the multipolymer of copolymer composition.More specifically, preferably from following general formula (12-1), (12-2) or the monomer more than a kind or 2 kinds (hereinafter referred to as " monomer (M-1) ") (12-3) selected the compound of expression and the multipolymer that forms from following general formula (12-4) or the monomer more than a kind or 2 kinds (hereinafter referred to as " monomer (M-2) ") (12-5) selected the compound of expression.

[changing 16] [in the formula, R ²⁹Expression hydrogen atom or methyl; R ³⁰The alkyl of expression carbon number 1～18].

[changing 17]

[in the formula, R ³¹Expression hydrogen atom or methyl; R ³²The alkyl of expression carbon number 1～12].

[changing 18]

[in the formula, Y ¹And Y ²Can be identical or different, represent separately the alkoxyl group of hydrogen atom, carbon number 1～18 or the alkyl monosubstituted amino of carbon number 1～18].

[changing 19]

[in the formula, R ³³Expression hydrogen atom or methyl; R ³⁴The alkylidene group of expression carbon number 2～18; M represents 0 or 1; Y ³Expression contains the organic group of the carbon number 1～30 of nitrogen-atoms].

[changing 20]

[in the formula, R ³⁵Expression hydrogen atom or methyl; Y ⁴Expression contains the organic group of the carbon number 1～30 of nitrogen-atoms].

As by the R in the general formula (12-1) ³⁰The alkyl of the carbon number 1～18 of expression, can enumerate particularly the alkyl such as methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl (these alkyl can be the straight chain shapes, also can be chains).

As by the R in the general formula (12-2) ³²The alkyl of the carbon number 1～12 of expression, can enumerate particularly the alkyl such as methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl (these alkyl can be the straight chain shapes, also can be chains); The thiazolinyls such as butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonene base, decene base, undecenyl, dodecenyl succinic (these thiazolinyls can be the straight chain shapes, also can be chains); The carbon numbers such as cyclopentyl, cyclohexyl, suberyl are 5～7 cycloalkyl; The carbon numbers such as methylcyclopentyl, dimethylcyclopentyl, methylethyl cyclopentyl, diethyl cyclopentyl, methylcyclohexyl, Dimethylcyclohexyl, methylethyl cyclohexyl, diethyl cyclohexyl, methyl suberyl, dimethyl suberyl, methylethyl suberyl, diethyl suberyl are that (alkyl can be the straight chain shape for 6～11 alkyl-cycloalkyl, also can be a chain, and the bonding position on this cycloalkyl also be arbitrarily); The aryl such as phenyl, naphthyl; The carbon numbers such as tolyl, xylyl, ethylphenyl, propyl group phenyl, butyl phenyl, amyl group phenyl, hexyl phenyl are that (alkyl can be the straight chain shape for 7～12 various alkylaryls, also can be a chain, and the bonding position on this aryl also be arbitrarily); The carbon numbers such as benzyl, phenylethyl, phenyl propyl, phenyl butyl, phenylpentyl, phenyl hexyl are 7～12 arylalkyl (alkyl can be the straight chain shape, also can be a chain, and the bonding position of alkyl on aryl also is arbitrarily) etc.

By the Y in the general formula (12-3) ¹And Y ²The alkoxyl group of carbon number 1～18 of expression is to remove hydrogen atom and the residue (OR that obtains from the hydroxyl of the alkyl alcohol of carbon number 1～18 ³⁶R ³⁶Alkyl for carbon number 1～18).As R ³⁶The alkyl of the carbon number 1～18 of expression can be enumerated the R in general formula (12-1) ³⁹Illustrated alkyl in the explanation of the alkyl of the carbon number 1～18 of expression.

By the Y in the general formula (12-3) ¹And Y ²The alkyl monosubstituted amino of carbon number 1～18 of expression is to remove hydrogen atom and the residue (NHR that obtains from the amino of the monoalkylamine of carbon number 1～18 ³⁷R ³⁷Alkyl for carbon number 1～18).As R ³³The alkyl of the carbon number 1～18 of expression can be enumerated the R in general formula (12-1) ³⁰Illustrated alkyl in the explanation of the alkyl of the carbon number 1～18 of expression.

In the general formula (12-4), as R ³⁴The alkylidene group of the carbon number 2～18 of expression, can enumerate particularly the alkylidene groups such as ethylidene, propylidene, butylidene, pentylidene, hexylidene, inferior heptyl, octylene, nonamethylene, inferior decyl, inferior undecyl, inferior dodecyl, inferior tridecyl, inferior tetradecyl, inferior pentadecyl, inferior hexadecyl, inferior heptadecyl, inferior octadecyl (these alkylidene groups can be the straight chain shapes, also can be chains) etc.

Y in the general formula (12-4) ³And the Y in the general formula (12-5) ⁴, the organic group of the carbon number 1～30 that contains nitrogen-atoms of respectively doing for oneself.Y ³And Y ⁴The number of the nitrogen-atoms that the organic group of expression has does not have particular restriction, is preferably 1.In addition, Y ³And Y ⁴The carbon number of organic group of expression as mentioned above, is 1～30, is preferably 1～20, more preferably 1～16.

As by Y ³And Y ⁴The organic group of expression is preferably the group that also contains Sauerstoffatom, in addition, is preferably the group with ring.Especially, consider from the viewpoint of anti-sludge, by Y ³And Y ⁴The organic group of expression preferably has the ring that contains Sauerstoffatom.In addition, when by Y ³And Y ⁴The organic group of expression is that this ring can be any in aliphatics ring or the aromatic ring when having the group of ring, is preferably the aliphatics ring.And then, by Y ³And Y ⁴The ring that the organic group of expression has is considered from the viewpoint of anti-sludge, is preferably 6 yuan of rings.

As by Y ³And Y ⁴The organic group of expression, can enumerate particularly dimethylamino, diethylin, dipropyl amino, dibutylamino, anilino, toluene amido, dimethylbenzene amido, kharophen, benzamido, morpholinyl, pyrryl, pyrrolinyl, pyridyl, picolyl, pyrrolidyl, piperidyl, quinonyl, pyrrolidone-base (pyrrolidonyl), pyrrolidone-base (pyrrolidono), imidazolinyl, pyrazinyl etc., wherein, morpholinyl particularly preferably.

As the preference of the compound of above-mentioned general formula (12-1)～(12-3) expression, can enumerate the methacrylic ester, alkene, vinylbenzene, vinyl toluene, maleic anhydride ester, maleic anhydride acid amides and their mixture etc. of carbon number 2～20 of alkyl of acrylate, the carbon number 1～18 of the alkyl of carbon number 1～18.

In addition, as above-mentioned general formula (12-4) or (12-5) preference of compound of expression, can enumerate dimethylaminoethyl acrylate methyl amino methyl, methacrylic acid diethylin methyl esters, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, 2-methyl-5-vinylpyrine, methacrylic acid morpholino methyl esters, methacrylic acid morpholino ethyl ester, NVP and their mixture etc.

In the compound of above-mentioned general formula (12-1)～(12-3) expression, consider from the viewpoint of viscosity-temperature profile, as monomer (M-1), the compound of preferred formula (12-1) expression.On the other hand, as monomer (M-2), consider above-mentioned general formula (12-4) or (12-5) in the compound of expression, the compound of preferred formula (12-4) expression from the viewpoint of anti-sludge.

When monomer (M-1) and monomer (M-2) copolymerization, monomer (M-1) is arbitrarily with the polymerization of monomer (M-2) than (mol ratio), be preferably 80: 20～95: 5 scope in.In addition, the reaction method of copolymerization also is arbitrarily, normally by in the presence of the polymerization starters such as benzoyl peroxide, making monomer (M-1) and monomer (M-2) carry out free radical solution polymerization, and can be easily and positively obtain the purpose multipolymer.The weight-average molecular weight of the multipolymer that obtains also is arbitrarily, is preferably 1,000～300,000, more preferably 5,000～100,000.

The content of the antimist agent in the compressor oil composition of the present embodiment take total composition as benchmark, is preferably below the 5 quality %, more preferably below the 1 quality %, more preferably below the 0.5 quality %.Even the content of antimist agent surpasses above-mentioned higher limit, also can't see and the corresponding effect that further improves oil mist prevention of content, in addition, cause reduced viscosity owing to shearing, be not preferred therefore.In addition, the content of antimist agent take total composition as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.03 quality %, more preferably more than the 0.05 quality %.When the content of antimist agent is lower than above-mentioned lower value, the inadequate tendency because the raising effect of the oil mist prevention that its interpolation brings becomes.

The compressor oil composition of the present embodiment can contain above-mentioned lubricant base, antioxidant and antimist agent, in order further to improve its characteristic, also can further contain following various additives.

The compressor oil composition of the present embodiment is considered from the viewpoint that can further improve its wear resistance, withstand load ability, also can further contain Phosphorus extreme pressure agent and/or thiophosphatephosphorothioate.Phosphorus extreme pressure agent is identical with the situation of above-mentioned the 1st embodiment with the concrete example of thiophosphatephosphorothioate (ホ ス Off オ ロ チ オ ネ one ト), therefore, is not repeated.In the compressor oil composition of the present embodiment, from the viewpoint of each excellent property such as extreme pressure property and the considerations such as viewpoint little to the disadvantageous effect of stability, preferred ortho-phosphoric acid ester and phosphorous acid ester, particularly preferably ortho-phosphoric acid ester.

When using Phosphorus extreme pressure agent and/or thiophosphatephosphorothioate, their total content take total composition as benchmark, by the phosphoric scaled value, is preferably 0.005～0.5 quality %, more preferably 0.02～0.2 quality %.If this content in above-mentioned scope, then can with high level and balance realize well oxidation stability and extreme pressure property the two.

In addition, the compressor oil composition of the present embodiment, in order further to improve its various performances, also can contain the known lubricating oil additive beyond above-mentioned, such as in rust-preventive agent, anticorrosive agent, pour point reducer, the defoamer etc. more than a kind or 2 kinds.

As rust-preventive agent, can enumerate such as aliphatics amine, metal organic sulfonate, organic phosphoric acid metal-salt, alkenyl succinic acid ester, polyol ester etc.

As anticorrosive agent, can enumerate such as benzotriazole compound, thiadiazole compound, glyoxaline compound etc.

As defoamer, can enumerate such as type siloxanes such as dimethyl siloxanes.

The content of these additives can be selected arbitrarily, the content of each additive take total composition as benchmark, preferably, pour point reducer (pour point stiffening agent) is 0.01～5.0 quality %, rust-preventive agent and anticorrosive agent are respectively 0.01～3.0 quality %, and defoamer is 0.00001～0.5 quality %.

Compressor oil composition with the present embodiment of above-mentioned formation can be realized the raising of thermal oxidation stability and the minimizing of sludge well with high level and balance, especially, is very useful as the compressor oil composition of high-temperature use.Be explained, about said high-temperature use herein, do not have particular restriction for use temperature, when the oil temperature of fuel tank continues to be in more than 60 ℃ when recycling, effectively brought into play by the above-mentioned effect that the compressor oil composition of the present embodiment brings.And, when this temperature reaches more than 80 ℃ and then reach more than 100 ℃, can give play to better effect.As this high-temperature use, can enumerate rotary gas compressor, generating with internal combustion turbine etc., the purposes of the compressor oil composition of the present embodiment is not limited to these.

(the 3rd embodiment; Hydraulic oil composition) hydraulic oil composition of the 3rd embodiment of the present invention contain the lubricant base of the invention described above and contain phosphorus and/or sulphur as the compound of Constitution Elements.

Be explained, in the hydraulic oil composition of the present embodiment, the scheme of lubricant base of the present invention is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, in the hydraulic oil composition of the present embodiment, can use separately the lubricant base of the invention described above, and, also can also using more than a kind or 2 kinds lubricant base of the present invention and other base oils.Be explained, the concrete example of other base oils and lubricant base of the present invention shared ratio in mixed base oil is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, the hydraulic oil composition of the present embodiment comprises and contains phosphorus and/or sulphur as the compound of Constitution Elements.

Be explained, in the hydraulic oil composition of the present embodiment, the concrete example of phosphorus compound of the present invention and preferred version, identical with the situation of above-mentioned the 1st embodiment, therefore, be not repeated.

In the present embodiment, when using phosphoric acid ester or phosphorous acid esters, its content take total composition as benchmark, is preferably below the 10 quality %, more preferably below the 5 quality %, more preferably below the 3 quality %.Even this content, also be can't see the further raising with the corresponding wear resistance of content and rubbing characteristics above 5 quality %, and oxidation stability reduces, and is not preferred therefore.On the other hand, the content of phosphoric acid ester or phosphorous acid esters take total composition as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %, more preferably more than the 0.1 quality %.The content of phosphoric acid ester and phosphorous acid esters is during less than 0.01 quality %, the inadequate tendency because the raising effect of the wear resistance that its interpolation brings and rubbing characteristics becomes.

In addition, as the phosphorus-containing carboxylic acid compound, as long as contain carboxyl and phosphorus atom both sides in a part, its structure does not just have particular restriction.But, consider preferred phosphorylated carboxylic acid from the viewpoint of wear resistance and thermal oxidation stability.

As the phosphorylated carboxylic acid, can enumerate for example compound of following general formula (13) expression.

[changing 21]

[in the formula (13), R ³⁸And R ³⁹Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～30; R ⁴⁰The alkylidene group of expression carbon number 1～20; R ⁴¹The alkyl of expression hydrogen atom or carbon number 1～30; X ¹, X ², X ³And X ⁴Can be identical or different, represent separately Sauerstoffatom or sulphur atom].

In the general formula (13), R ³⁸And R ³⁹The alkyl that represents separately hydrogen atom or carbon number 1～30.As the alkyl of carbon number 1～30, can enumerate alkyl, thiazolinyl, cycloalkyl, bicyclic alkyl, tricyclic alkyl, alkyl-cycloalkyl, alkyl bicyclic alkyl, alkyl tricyclic alkyl, cycloalkylalkyl, bicyclic alkyl alkyl, tricyclic alkyl alkyl, aryl, alkylaryl, arylalkyl etc.In addition, R ³⁸With R ³⁹Also can form the divalent group that is represented by following general formula (14) by bonding.Be explained, 2 chemical bonds of this divalent group respectively with X ¹, X ²Bonding.

[changing 22] [in the formula (14), R ⁴²And R ⁴³Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～4; R ⁴²And R ⁴³Both sides preferably are methyl].

As R ³⁸And R ³⁹, wherein, be preferably alkyl, cycloalkyl, cycloalkylalkyl, tricyclic alkyl alkyl, aryl, alkylaryl, R ³⁸With R ³⁹The divalent group by above-mentioned general formula (14) expression that bonding forms, more preferably alkyl.

As R ³⁸, R ³⁹Alkyl, can be straight chain shape or chain any.In addition, the carbon number of this alkyl is preferably 1～18.As this alkyl, can enumerate methyl particularly, ethyl, propyl group, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, amyl group, isopentyl, hexyl, heptyl, the 3-heptyl, octyl group, the 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, the 2-ethyl-butyl, the 1-aminomethyl phenyl, 1, the 3-dimethylbutyl, 1,1,3, the 3-tetramethyl butyl, 1-methyl hexyl, different heptyl, the 1-methylheptyl, 1,1,3-trimethylammonium hexyl and 1-methyl undecyl etc.Wherein, the alkyl of preferred carbon number 3～18, the more preferably alkyl of carbon number 3～8.

As R ³⁸, R ³⁹Cycloalkyl, for example can enumerate cyclopentyl, cyclohexyl, suberyl, ring octyl group or cyclo-dodecyl etc.Wherein, preferred carbon number 5 or 6 cycloalkyl (cyclopentyl and cyclohexyl), particularly preferably cyclohexyl.

As R ³⁸, R ³⁹Cycloalkylalkyl, preferred methyl cycloalkyl, more preferably carbon number 6 or 7 methyl cycloalkyl, particularly preferably cyclopentyl-methyl and cyclohexyl methyl.

As R ³⁸, R ³⁹The bicyclic alkyl alkyl, preferred bicyclic alkyl methyl, more preferably the bicyclic alkyl methyl of carbon number 9～11, particularly preferably naphthalane base (デ カ リ ニ Le) methyl.

As R ³⁸, R ³⁹The tricyclic alkyl alkyl, preferred tricyclic alkyl methyl, the more preferably tricyclic alkyl methyl of carbon number 9～15 is particularly preferably by the group of following formula (15) or (16) expression.[changing 23]

[changing 24]

As R ³⁸, R ³⁹Aryl and alkylaryl, can enumerate phenyl, tolyl, xylyl, ethylphenyl, ethenylphenyl, aminomethyl phenyl, 3,5-dimethylphenyl, trimethylphenyl, ethylphenyl, isopropyl phenyl, tert-butyl-phenyl, di-tert-butyl-phenyl, 2,6-di-t-butyl-4-aminomethyl phenyl etc.Wherein, aryl and the alkylaryl of preferred carbon number 6～15.

R ⁴⁰The alkylidene group of expression carbon number 1～20.The carbon number of this alkylidene group is preferably 1～10, and more preferably 2～6, more preferably 3～4.In addition, as this alkylidene group, the alkylidene group that is preferably represented by following general formula (17).[changing 25]

In the general formula (17), R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～4; R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷The total carbon number be below 6.In addition, preferably, R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～3; R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷The total carbon number be below 5.More preferably, R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1 or 2; R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷The total carbon number be below 4.Particularly preferably be R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～2; R ⁴⁴, R ⁴⁵, R ⁴⁶And R ⁴⁷The total carbon number be below 3.Most preferably, R ⁴⁶Perhaps R ⁴⁷In any be methyl, remaining 3 group is hydrogen atom.

In addition, the R in the general formula (13) ⁴¹The alkyl of expression hydrogen atom or carbon number 1～30.As this alkyl, can enumerate at R ³⁸And R ³⁹Explanation in illustrated alkyl.

In addition, the X in the general formula (13) ¹, X ², X ³And X ⁴Can be identical or different, represent separately Sauerstoffatom or sulphur atom.Consider preferred X from the viewpoint of extreme pressure property ¹, X ², X ³Perhaps X ⁴In be sulphur atom more than 1, more preferably be sulphur atom more than 2, further preferred 2 be that sulphur atom and remaining 2 are Sauerstoffatom.At this moment, although X ¹, X ², X ³Perhaps X ⁴In any be sulphur atom or for arbitrarily, but preferred X ¹And X ²Be Sauerstoffatom and X ³And X ⁴Be sulphur atom.

Each group in the general formula (13) more than has been described, has considered from the viewpoint that extreme pressure property is better, the β that preferred use is represented by following general formula (18)-dithio phosphorylated propionic acid.

[changing 26]

[in the formula (18), R ³⁸, R ³⁹Respectively the expression with formula (13) in R ³⁸, R ³⁹Identical definition content, R ⁴⁴, R ⁴⁵, R ⁴⁶, R ⁴⁷Respectively the expression with formula (17) in R ⁴⁴, R ⁴⁵, R ⁴⁶, R ⁴⁷Identical definition content].

The occasion of the phosphorus-containing carboxylic acid compound of stating in the use, its content does not have particular restriction, take total composition as benchmark, is preferably 0.001～5 quality %, more preferably 0.002～3 quality %, more preferably 0.003～1 quality %.When the content of phosphorus-containing carboxylic acid compound during less than above-mentioned lower value, the inadequate tendency because the raising effect of the wear resistance that its interpolation brings and rubbing characteristics becomes.On the other hand, even surpass above-mentioned higher limit, also can not get improving effect with the corresponding oilness of content, and then thermal oxidation stability or hydrolysis stability might reduce, and are not preferred therefore.Be explained, in the phosphorylated carboxylic acid of general formula (13) expression, about R ⁴¹Be the compound of the hydrogen atom content of (comprising the β of general formula (18) expression-dithio phosphorylated propionic acid); be preferably 0.001～0.1 quality %; 0.002～0.08 quality % more preferably; 0.003～0.07 quality % more preferably; further be preferably 0.004～0.06 quality %, be particularly preferably 0.005～0.05 quality %.When this content less than 0.001 the time, extreme pressure property improves effect might become insufficient, on the other hand, if surpass 0.1 quality %, then thermal oxidation stability might reduce.

In addition, thiophosphatephosphorothioate is illustrated compound by general formula (4) expression in the explanation of above-mentioned the 1st embodiment, and its concrete example is identical with the situation of above-mentioned the 1st embodiment with preference, therefore, is not repeated.

In the occasion of using thiophosphatephosphorothioate, its content does not have particular restriction, take total composition as benchmark, is preferably 0.001～10 quality %, more preferably 0.005～5 quality %, more preferably 0.01～3 quality %.Even the content of thiophosphatephosphorothioate, also be can't see the further raising with the corresponding wear resistance of content and rubbing characteristics above above-mentioned higher limit, and the oxidation stability reduction, be not preferred therefore.On the other hand, the content of thiophosphatephosphorothioate take total composition as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %, more preferably more than the 0.1 quality %.When the content of thiophosphatephosphorothioate during less than 0.01 quality %, the inadequate tendency because the raising effect of the wear resistance that its interpolation brings and rubbing characteristics becomes.

In addition; as containing the compound (hereinafter referred to as " sulphur compound ") of sulphur as Constitution Elements, can enumerate particularly sulfuration grease, sulfide aliphatic acid, sulfuration ester, olefine sulfide, dialkyl (many) sulfide, thiadiazole compound, alkylthio carbamoyl compounds, Thiourethane compound, sulfo-terpene compound, dialkyl group thio-2 acid ester cpds, sulfurized mineral oil, zinc dithiocarbamate compound and molybdenum dithiocarbamate etc.These sulphur compounds can use separately a kind, also can use with the mixture more than 2 kinds.Be explained, phosphorodithioic acid zn cpds and phosphorodithioic acid molybdenum compound are to contain the p and s both sides as the compound of Constitution Elements, and in the present embodiment, phosphorodithioic acid zn cpds and phosphorodithioic acid molybdenum compound are included in " sulphur compound ".

The sulfuration grease is that its sulphur content does not have particular restriction, generally is advisable with 5～30 quality % by the product that sulphur or sulfocompound and grease (lard, whale oil, vegetables oil, fish oil etc.) reaction is obtained.As its concrete example, can enumerate sulfuration lard, sulfuration rapeseed oil, sulfurized castor oil, sulfurized soybean oil, sulfuration Rice pollard oil and their mixture etc.

Example as sulfide aliphatic acid, with sulfuration oleic acid etc. as the example that vulcanizes ester, can enumerate the unsaturated fatty acid ester that unsaturated fatty acids (comprising the fatty acid of extracting from oleic acid, linolic acid or above-mentioned animal-plant oil etc.) and various alcohol reacted and obtain and their mixture etc. by the product that adopts method arbitrarily to vulcanize to obtain etc., can enumerate particularly such as sulfuration Witconol 2301 or sulfuration Rice pollard oil lipid acid monooctyl ester and their mixture etc.

As olefine sulfide, can enumerate the compound that is for example represented by following general formula (19).

Alkene or the vulcanizing agents such as its two～tetramer and sulphur, sulfur subchloride of this compound by making carbon number 2～15 react and obtain, as this alkene, and preferred propylene, iso-butylene, diisobutylene etc.R ⁴⁸-S _a-R ⁴⁹(19) [in the formula, R ⁴⁸The thiazolinyl of expression carbon number 2～15; R ⁴⁹Alkyl or the thiazolinyl of expression carbon number 2～15; A represents 1～8 integer].

In addition, dialkyl (many) sulfide is the compound by following general formula (20) expression.Herein, at R ⁵⁰And R ⁵¹Be the occasion of alkyl, sometimes be called as alkyl monosulfide.R ⁵⁰-S _b-R ⁵¹(20) [in the formula, R ⁵⁰And R ⁵¹Can be identical or different, represent respectively straight chain shape alkyl, chain or cyclic alkyl, the aryl of carbon number 6～20, the alkylaryl of carbon number 7～20 or the arylalkyl of carbon number 7～20 of carbon number 1～20; B represents 1～8 integer].

As the R in the above-mentioned general formula (20) ⁵⁰And R ⁵¹, can enumerate n-propyl particularly, sec.-propyl, normal-butyl, isobutyl-, sec-butyl, the tertiary butyl, the straight or branched amyl group, the straight or branched hexyl, the straight or branched heptyl, the straight or branched octyl group, the straight or branched nonyl, the straight or branched decyl, the straight or branched undecyl, the straight or branched dodecyl, the straight or branched tridecyl, the straight or branched tetradecyl, the straight or branched pentadecyl, the straight or branched hexadecyl, the straight or branched heptadecyl, the straight or branched octadecyl, the straight or branched nonadecyl, the alkyl of the straight or brancheds such as straight or branched eicosyl; The aryl such as phenyl, naphthyl; Tolyl, ethylphenyl, straight or branched propyl group phenyl, the straight or branched butyl phenyl, straight or branched amyl group phenyl, straight or branched hexyl phenyl, straight or branched heptyl phenyl, the straight or branched octyl phenyl, straight or branched nonyl phenyl, the straight or branched decyl phenyl, straight or branched undecyl phenyl, the straight or branched dodecylphenyl, xylyl, ethyl methyl phenyl, the diethyl phenyl, two (straight or branched) propyl group phenyl, two (straight or branched) butyl phenyl, the methyl naphthyl, the ethyl naphthyl, straight or branched propyl group naphthyl, straight or branched butyl naphthyl, the dimethyl naphthyl, the ethyl-methyl naphthyl, the diethyl naphthyl, two (straight or branched) propyl group naphthyl, the alkylaryls such as two (straight or branched) butyl naphthyl; The arylalkyls such as benzyl, phenylethyl, phenyl propyl; Deng.Wherein, as the R in the general formula (20) ⁵⁰And R ⁵¹Be preferably by propylene, the alkyl of the carbon number 3～18 that 1-butylene or iso-butylene are derivative, the perhaps aryl of carbon number 6～8, alkylaryl or arylalkyl, as these groups, can enumerate for example sec.-propyl, by the derivative chain hexyl of propylene 2 polymers, by the derivative chain nonyl of propylene 3 polymers, by the derivative chain dodecyl of propylene 4 polymers, by the derivative chain pentadecyl of propylene 5 polymers, by the derivative chain octadecyl of propylene 6 polymers, sec-butyl, the tertiary butyl, by the derivative chain octyl group of 1-butylene 2 polymers, by the derivative chain octyl group of iso-butylene 2 polymers, by the derivative chain dodecyl of 1-butylene 3 polymers, by the derivative chain dodecyl of iso-butylene 3 polymers, by the derivative chain hexadecyl of 1-butylene 4 polymers, by the derivative alkyl such as a chain hexadecyl of iso-butylene 4 polymers; The alkylaryls such as phenyl, tolyl, ethylphenyl, xylyl; The arylalkyl such as benzyl, phenylethyl.Be explained each self-contained whole constitutional isomer in these groups.

And then, as the R in the above-mentioned general formula (20) ⁵⁰And R ⁵¹, consider from the viewpoint that wear resistance and rubbing characteristics improve, respectively, more preferably by the branched-chain alkyl of the carbon number 3～18 of ethene or propylene derived, particularly preferably by the branched-chain alkyl of the carbon number 6～15 of ethene or propylene derived.

As dialkyl (many) sulfide by general formula (20) expression, preferably can enumerate such as dibenzyl polysulfide, various dinonyl polysulfide, various pairs of dodecyl polysulfides, various dibutyl polysulfide, various dioctyl polysulfide, phenylbenzene polysulfide, dicyclohexyl polysulfide and their mixtures etc.

As thiadiazole compound, for example can enumerate by 1,3 of following general formula (21) expression 4-thiadiazoles, by 1,2 of following general formula (22) expression, 4-thiadiazole compound and by the Isosorbide-5-Nitrae of following general formula (23) expression, 5-thiadiazole compound.[changing 27] [changing 28]

[changing 29]

[in the formula, R ⁵², R ⁵³, R ⁵⁴, R ⁵⁵, R ⁵⁶And R ⁵⁷Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～20; C, d, e, f, g and h can be identical or different, represent separately 0～8 integer]

As the concrete example of this thiadiazole compound, preferably can enumerate two (the n-hexyl dithio)-1,3 of 2,5-, the 4-thiadiazoles, two (the n-octyl dithio)-1,3 of 2,5-, the 4-thiadiazoles, 2, two (the n-nonyl dithio)-1,3 of 5-, the 4-thiadiazoles, 2,5-two (1,1,3,3-tetramethyl butyl dithio)-1,3, the 4-thiadiazoles, two (the n-hexyl dithio)-1,2 of 3,5-, the 4-thiadiazoles, 3, two (the n-octyl dithio)-1,2 of 5-, the 4-thiadiazoles, 3, two (the n-nonyl dithio)-1,2 of 5-, the 4-thiadiazoles, 3,5-two (1,1,3,3-tetramethyl butyl dithio)-1,2, the 4-thiadiazoles, 4, two (the n-hexyl dithio)-1,2 of 5-, the 3-thiadiazoles, 4, two (the n-octyl dithio)-1,2 of 5-, the 3-thiadiazoles, 4, two (the n-nonyl dithio)-1,2 of 5-, the 3-thiadiazoles, 4,5-two (1,1,3,3-tetramethyl butyl dithio)-1,2,3-thiadiazoles and their mixture etc.

As the alkylthio carbamoyl compounds, can enumerate the compound that is for example represented by following general formula (24).

[changing 30]

[in the formula, R ⁵⁸～R ⁵⁹Can be identical or different, represent separately the alkyl of carbon number 1～20; K represents 1～8 integer].

As the concrete example of this alkylthio carbamoyl compounds, preferably can enumerate two (dimethyl thiocarbamoyl) monosulphides, two (dibutyl thiocarbamoyl) monosulphide, two (dimethyl thiocarbamoyl) disulphide, two (dibutyl thiocarbamoyl) disulphide, two (diamyl thiocarbamoyl) disulphide, two (dioctyl thiocarbamoyl) disulphide and their mixture etc.

As the alkylthio carbamate compounds, can enumerate the compound that is for example represented by following general formula (25).

[changing 31] [in the formula, R ⁶²～R ⁶⁵Can be identical or different, represent separately the alkyl of carbon number 1～20; R ⁶⁶The alkyl of expression carbon number 1～10].

As the concrete example of this alkylthio carbamate compounds, preferably can enumerate methylene-bis (Keywords dibutyl dithiocarbamate), methylene-bis [two (2-ethylhexyl) dithiocarbamate] etc.

And then, as the sulfo-terpene compound, can enumerate for example reactant of thiophosphoric anhydride and firpene; As thio-2 acid dialkyl compound, can enumerate such as thiodipropionate dilauryl, thio-2 acid distearyl ester and their mixture etc.

Sulfurized mineral oil refers to by making free sulfur be dissolved in the product that mineral oil forms.Herein, there is not particular restriction as the mineral oil that uses in the sulfurized mineral oil of the present invention, can enumerate particularly by with those lubricating oil distillates that is obtained through air distillation and underpressure distillation by crude oil, adopt the refinement treatment proper combinations such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrofining, sulfuric acid scrubbing, clay treatment are made with extra care paraffinic mineral oil, the cycloalkane mineral wet goods that forms.In addition, as free sulfur, can use the free sulfur of any forms such as bulk, Powdered, melt liquid shape, if but use free sulfur Powdered or the melt liquid shape, then can efficiently it be dissolved in the base oil, be preferred therefore.Be explained, the free sulfur of melt liquid shape is owing to being mutually to mix between the liquid, therefore, have advantages of and within the very short time, to dissolve operation, but owing to must more than the fusing point of free sulfur, operate, therefore need the special devices such as heating installation, in addition, because be to operate in high temperature atmosphere gas, thereby follow danger etc., therefore operation may not be easy.In contrast, the cheap and processing ease of pulverous free sulfur, and also it is very short to dissolve the needed time, therefore particularly preferably.In addition, the sulphur content in the sulfurized mineral oil of the present invention does not have particular restriction, generally, take the sulfurized mineral oil total amount as benchmark, is preferably 0.05～1.0 quality %, more preferably 0.1～0.5 quality %.

Phosphorodithioic acid zn cpds, zinc dithiocarbamate compound, phosphorodithioic acid molybdenum compound and molybdenum dithiocarbamate compound refer to respectively the compound by following general formula (26)～(29) expression.[changing 32]

[changing 33]

[changing 34]

[changing 35]

[in the formula, R ⁶⁷, R ⁶⁸, R ⁶⁹, R ⁷⁰, R ⁷¹, R ⁷², R ⁷³, R ⁷⁴, R ⁷⁵, R ⁷⁶, R ⁷⁷, R ⁷⁸, R ⁷⁹, R ⁸⁰, R ⁸¹And R ⁸²Can be identical or different, represent separately the alkyl of carbon number more than 1; X ⁵And X ⁶Represent separately Sauerstoffatom or sulphur atom].

Herein, as R ⁶⁷～R ⁸²The concrete example of the alkyl of expression can be enumerated the alkyl such as methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl, tetracosyl; The cycloalkyl such as cyclopentyl, cyclohexyl, suberyl; Methylcyclopentyl, the ethyl cyclopentyl, dimethylcyclopentyl, the propyl group cyclopentyl, the methylethyl cyclopentyl, the trimethylammonium cyclopentyl, the butyl cyclopentyl, the methyl-propyl cyclopentyl, the diethyl cyclopentyl, the dimethyl ethyl cyclopentyl, methylcyclohexyl, the ethyl cyclohexyl, Dimethylcyclohexyl, the propyl group cyclohexyl, the methylethyl cyclohexyl, trimethylcyclohexyl, the butyl cyclohexyl, the methyl-propyl cyclohexyl, the diethyl cyclohexyl, the dimethyl ethyl cyclohexyl, the methyl suberyl, the ethyl suberyl, the dimethyl suberyl, the propyl group suberyl, the methylethyl suberyl, the trimethylammonium suberyl, the butyl suberyl, the methyl-propyl suberyl, the diethyl suberyl, the alkyl-cycloalkyls such as dimethyl ethyl suberyl; The aryl such as phenyl, naphthyl; The alkylaryls such as tolyl, xylyl, ethylphenyl, propyl group phenyl, methylethyl phenyl, trimethylphenyl, butyl phenyl, methyl-propyl phenyl, diethyl phenyl, dimethyl ethyl phenyl, amyl group phenyl, hexyl phenyl, heptyl phenyl, octyl phenyl, nonyl phenyl, decyl phenyl, undecyl phenyl, dodecylphenyl, tridecyl phenyl, tetradecyl phenyl, pentadecyl phenyl, hexadecyl phenyl, heptadecyl phenyl, octadecyl phenyl; The arylalkyls such as benzyl, styroyl, phenyl propyl, phenyl butyl etc.Be explained each self-contained whole branched chain isomer of these groups or replacement isomer.

When using above-mentioned sulphur compound, its content take total composition as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %, more preferably more than the 0.1 quality %.If the content of sulphur compound is less than above-mentioned lower value, the inadequate tendency because the raising effect of the wear resistance that its interpolation brings and rubbing characteristics becomes then.In addition, even cooperate more than the value at this, also can not get the effect corresponding with addition, consider from these viewpoints, the content of sulphur compound is take total composition as benchmark, be preferably below the 10 quality %, more preferably below the 5 quality %, more preferably below the 3 quality %, be particularly preferably below the 1 quality %.

The hydraulic oil composition of the present embodiment can contain lubricant base of the present invention and contain phosphorus and/or the sulphur compound as Constitution Elements, in order further to improve its characteristic, also can further contain following additive.

The hydraulic oil composition of the present embodiment is considered from the viewpoint of sludge inhibition, preferably further contains the decentralized viscosity index improver.

As the decentralized viscosity index improver, can use the arbitrarily compound that uses as the decentralized viscosity index improver of lubricating oil, for example, preferably contain nitrogen containing monomer with ethylenic unsaturated bond as the multipolymer of copolymer composition.More specifically, preferably illustrated in the explanation of above-mentioned the 2nd embodiment, from general formula (12-1), (12-2) or the monomer more than a kind or 2 kinds (monomer (M-1)) (12-3) selected the compound of expression and the multipolymer that forms from general formula (12-4) or the monomer more than a kind or 2 kinds (monomer (M-2)) (12-5) selected the compound of expression.

In the present embodiment, when making monomer (M-1) with monomer (M-2) copolymerization, monomer (M-1) is arbitrarily with the polymerization of monomer (M-2) than (mol ratio), preferably in 80: 20～95: 5 scope.In addition, the reaction method of copolymerization also is arbitrarily, usually, in the presence of the polymerization starters such as benzoyl peroxide, makes monomer (M-1) and monomer (M-2) carry out free radical solution polymerization, thus can be easily and positively obtain the purpose multipolymer.The number-average molecular weight of the multipolymer that obtains also is arbitrarily, is preferably 1,000～1,500,000, more preferably 10,000～200,000.

In the hydraulic oil composition of the present embodiment, the content of decentralized viscosity index improver take total composition as benchmark, is preferably below the 10 quality %, more preferably below the 5 quality %, and 2 quality % more preferably.Even the content of decentralized viscosity index improver, also be can't see the further raising with the corresponding sludge inhibition of content above 10 quality %, and, can cause reduced viscosity owing to shearing, be not preferred therefore.In addition, the content of decentralized viscosity index improver take total composition as benchmark, is preferably more than the 0.01 quality %, and 0.05 quality % more preferably is more preferably more than the 0.1 quality %.When the content of decentralized viscosity index improver during less than 0.01 quality %, the inadequate tendency because the raising effect of the sludge inhibition that its interpolation brings becomes.

In addition, the hydraulic oil composition of the present embodiment is considered from the viewpoint that can further improve rubbing characteristics, preferably contains at least a kind that selects from the compound of following general formula (30)～(32) expression.R ⁸³-CO-NR ⁸⁴-(CH ₂) _p-COOX ⁷(30) [in the formula, R ⁸³The alkyl of expression carbon number 6～30 or the thiazolinyl of carbon number 6～30; R ⁸⁴The alkyl of expression carbon number 1～4; X ⁷Expression hydrogen atom, the alkyl of carbon number 1～30 or the thiazolinyl of carbon number 1～30; P represents 1～4 integer].[R ⁸⁵-CO-NR ⁸⁶-(CH ₂) _q-COO] _rY ⁵(31) [in the formula, R ⁸⁵The alkyl of expression carbon number 6～30 or the thiazolinyl of carbon number 6～30; R ⁸⁶The alkyl of expression carbon number 1～4; Y ⁵Expression alkali metal atom or alkaline-earth metal atom; N represents 1～4 integer; Work as Y ⁵During for alkali metal atom, r represents 1; Work as Y ⁵During for alkaline-earth metal, r represents 2].[R ⁸⁷-CO-NR ⁸⁸-(CH ₂) _s-COO] _t-Z-(OH) _u(32) [in the formula, R ⁸⁷The alkyl of expression carbon number 6～30 or the thiazolinyl of carbon number 6～30; R ⁸⁸The alkyl of expression carbon number 1～4; Z represents to remove hydroxyl from the polyvalent alcohol more than 2 yuan and the residue that obtains; S represents 1～4 integer; T represents the integer more than 1; U represents the integer more than 0].

In general formula (30)～(32), R ⁸³, R ⁸⁵, R ⁸⁷Represent separately the alkyl of carbon number 6～30 or the thiazolinyl of carbon number 6～30.By R ⁸³, R ⁸⁵, R ⁸⁷The alkyl of expression or the carbon number of thiazolinyl are considered from the viewpoints such as solvability lubricant base, are more than 6, are preferably more than 7, more preferably more than 8.In addition, consider from viewpoints such as storage stabilities, by R ⁸³, R ⁸⁵, R ⁸⁷The carbon number of the alkyl or alkenyl of expression is below 30, is preferably below 24, more preferably below 20.As this alkyl and thiazolinyl, for example can enumerate particularly, the alkyl such as hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl (these alkyl can be the straight chain shapes, also can be chains); (these thiazolinyls can be the straight chain shapes to the thiazolinyls such as hexenyl, heptenyl, octenyl, nonene base, decene base, undecenyl, dodecenyl succinic, tridecylene base, tetradecene base, 15 carbene bases, cetene base, heptadecene base, vaccenic acid base, 19 carbene bases, eicosylene base, it also can be a chain, and the position of two keys also is arbitrarily) etc.

In general formula (30)～(32), R ⁸⁴, R ⁸⁶, R ⁸⁸The alkyl that represents separately carbon number 1～4.By R ⁸⁴, R ⁸⁶, R ⁸⁸The carbon number of alkyl of expression is considered from the viewpoint of storage stability etc., is below 4, is preferably below 3, more preferably below 2.

In addition, in general formula (30)～(32), p, q, s represent 1～4 integer separately.Consider from viewpoints such as storage stabilities, p, q, s are necessary for the integer below 4, are preferably below 3, more preferably below 2.

In addition, in the general formula (30), X ⁷Expression hydrogen atom, the alkyl of carbon number 1～30 or the thiazolinyl of carbon number 1～30.By X ⁷The alkyl of expression or the carbon number of thiazolinyl are considered from the viewpoint of storage stability etc., are below 30, are preferably below 20, more preferably below 10.As this alkyl or alkenyl, for example can enumerate particularly the alkyl such as methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl (these alkyl can be the straight chain shapes, also can be chains); The thiazolinyls such as vinyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonene base, decene base (these thiazolinyls can be the straight chain shapes, also can be a chain, and the position of two keys also are arbitrarily) etc.Consider X from the viewpoint of the good grade of sludge inhibition ⁵Be preferably alkyl.In addition, consider from the viewpoint that improves rubbing characteristics, improves the persistence etc. of rubbing characteristics effect, as X ⁷, be preferably the alkyl of hydrogen atom, carbon number 1～20 or the thiazolinyl of carbon number 1～20, more preferably the alkyl of hydrogen atom or carbon number 1～20, the more preferably alkyl of hydrogen atom or carbon number 1～10.

In the general formula (31), Y ⁵Expression alkali metal atom or alkaline-earth metal atom for example can be enumerated sodium, potassium, magnesium, calcium etc. particularly.Wherein, consider preferred alkaline-earth metal from the viewpoint of the persistence that improves the rubbing characteristics effect.In the general formula (32), work as Y ⁵During for basic metal, r represents 1; Work as Y ⁵During for alkaline-earth metal, r represents 2.

In the general formula (32), Z represents to remove hydroxyl from the polyvalent alcohol more than 2 yuan and the residue that obtains.As this polyvalent alcohol, for example can enumerate particularly, ethylene glycol, propylene glycol, 1,4-butyleneglycol, 1,2-butyleneglycol, neopentyl glycol, 1,6-hexylene glycol, 1,2-ethohexadiol, 1,8-ethohexadiol, isoamyl glycol, 3-methyl isophthalic acid, 2 yuan of alcohol such as 5-pentanediol, Sorbitol Powder, pyrocatechol, Resorcinol, Resorcinol, dihydroxyphenyl propane, Bisphenol F, Hydrogenated Bisphenol A, A Hydrogenated Bisphenol A F, dimer diol; Glycerine, 2-(methylol)-1,3-PD, 1,2,3-trihydroxybutane, 1,2,3-penta triol, 2-methyl isophthalic acid, 2,3-glycerol, 2-methyl-2,3,4-trihydroxybutane, 2-ethyl-1,2,3-trihydroxybutane, 2,3,4-penta triol, 2,3,4-hexanetriol, 4-propyl group-3,4,5-triol in heptan, 2,4-dimethyl-2,3,4-penta triol, 1,2,4-trihydroxybutane, 1,2,3 yuan of alcohol such as 4-penta triol, trimethylolethane, TriMethylolPropane(TMP); Tetramethylolmethane, tetrahydroxybutane, 1,2,3,4-penta tetrol, 2,3,4, the own tetrol of 5-, 1,2,4,5-penta tetrol, 1,3,4,4 yuan of alcohol such as the own tetrol of 5-, Glycerol dimer, sorbitan; 5 yuan of alcohol such as adonitol, arabitol, Xylitol, triglycerin; 6 yuan of alcohol such as dipentaerythritol, Sorbitol Powder, mannitol, iditol, inositol, galactitol, talose, allose; Polyglycerine or their dehydration condensation etc.

In the general formula (32), t is the integer more than 1, and u is the integer more than 0, and t+u is identical with the valence mumber of Z.In a word, in the hydroxyl of the polyvalent alcohol that residue Z is provided, both can all be substituted, also can only some be substituted.

In the compound of from general formula (30)～(32), selecting, consider preferably from the compound that general formula (30) and (31) represent, select at least a kind from the viewpoint of the persistence that improves the rubbing characteristics effect etc.As the preference of the compound of general formula (30) expression, can enumerate R ⁸³Thiazolinyl, R for carbon number 17 ⁸⁴Be methyl, X ⁷It is 1 N-oleoylsarcosine for hydrogen atom, p.

Be explained, the compound of general formula (30)～(32) expression can use separately a kind, also can will be used in combination more than 2 kinds.

The content of the compound of general formula (30)～(32) expression take total composition as benchmark, is preferably below the 5 quality %, more preferably below the 2 quality %, more preferably below the 1 quality %.Even the content of the compound of general formula (30)～(32) expression, also be can't see the further raising with the corresponding rubbing characteristics of content above 5 quality %, storage stability has the tendency of reduction.In addition, the content of the compound of general formula (30)～(32) expression take total composition as benchmark, is preferably more than the 0.001 quality %, more preferably more than the 0.003 quality %, more preferably more than the 0.005 quality %.When the content of the compound of general formula (30)～(32) expressions during less than 0.001 quality %, the inadequate tendency because the raising effect of the rubbing characteristics that its interpolation brings becomes.

In addition, the hydraulic oil composition of the present embodiment is considered from the viewpoint of further raising rubbing characteristics, preferably contains the compound by following general formula (33) expression.R ⁸⁹-CH ₂COOH (33) [in the formula, R ⁸⁹The thiazolinyl of alkyl, the carbon number 7～29 of expression carbon number 7～29 or by following general formula (34): R ⁹⁰-C ₆H ₄O-(34) (in the formula, R ⁹⁰The expression carbon number 1～20 alkyl or hydrogen atom) expression group].

R in general formula (33) ⁸⁹During for alkyl, the carbon number of this alkyl is considered from the viewpoint of the solvability lubricant base etc., is more than 7, is preferably more than 9.In addition, consider from the viewpoint of storage stability etc., the carbon number of this alkyl is below 29, is preferably below 22, more preferably below 19.As this alkyl, for example can enumerate particularly, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl etc. (these alkyl can be the straight chain shapes, also can be chains).

R in general formula (34) ⁸⁹During for thiazolinyl, the carbon number of this thiazolinyl is considered from the viewpoint of the solvability lubricant base etc., is more than 7, is preferably more than 9.In addition, consider from the viewpoint of storage stability etc., the carbon number of this thiazolinyl is below 29, is preferably below 22, more preferably below 19.As this thiazolinyl, for example can enumerate particularly, heptenyl, octenyl, nonene base, decene base, undecenyl, dodecenyl succinic, tridecylene base, tetradecene base, 15 carbene bases, cetene base, heptadecene base, vaccenic acid base, 19 carbene bases etc. (these thiazolinyls can be the straight chain shapes, also can be chains).

R in general formula (33) ⁸⁹During for the group of general formula (34) expression, the R in the general formula (34) ⁹⁰Alkyl or hydrogen atom for carbon number 1～20.By R ⁹⁰The carbon number of alkyl of expression is considered from the viewpoint of storage stability etc., is below 20, is preferably below 19, more preferably below 15.In addition, the carbon number of this alkyl is considered from the viewpoint of the solvability lubricant base etc., is more than 3, is preferably more than 5.In addition, work as R ⁹⁰During for alkyl, this alkyl the position of substitution on phenyl ring can be arbitrarily, but considers from the better viewpoint of the raising effect of rubbing characteristics, preferably with respect in the general formula (33)-CH ₂COOH is contraposition or a position, more preferably contraposition.

In general formula (33), R ⁸⁹Can be carbon number 7～29 alkyl, carbon number 7～29 thiazolinyl or by in the group of general formula (34) expression any, but consider from the viewpoint of the better grade of rubbing characteristics, be preferably the group of general formula (34) expression.

Content by the compound of general formula (33) expression is arbitrarily, if a large amount of the cooperation, then the sludge inhibition might reduce, therefore, take total composition as benchmark, be preferably below the 5 quality %, more preferably below the 1 quality %, more preferably below the 0.5 quality %.On the other hand, consider from the viewpoint of the raising effect that can give full play to rubbing characteristics etc., the content of the compound of general formula (33) expression, take total composition as benchmark, be preferably more than the 0.001 quality %, more preferably more than the 0.003 quality %, more preferably more than the 0.005 quality %.

In addition, the hydraulic oil composition of the present embodiment is considered from the viewpoint of sludge inhibition, preferably contains epoxy compounds.The concrete example of epoxy compounds and preference, identical with the situation of epoxy compounds in the 1st embodiment, therefore, be not repeated.

When the hydraulic oil composition of the present embodiment contained epoxy compounds, its content did not have particular restriction, take total composition as benchmark, was preferably 0.1～5.0 quality %, more preferably 0.2～2.0 quality %.

In addition, the hydraulic oil composition of the present embodiment is considered from the viewpoint that can further improve oxidation stability, can contain phenol antioxidant, amine antioxidants or contain the two.The concrete example of phenol antioxidant and amine antioxidants and preference, identical with the situation of phenol antioxidant in above-mentioned the 2nd embodiment and amine antioxidants, therefore, be not repeated.

The content of the phenol antioxidant in the hydraulic oil composition of the present embodiment take total composition as benchmark, is preferably below the 3 quality %, more preferably below the 2 quality %, and 1 quality % more preferably.Even the content of phenol antioxidant surpasses 3 quality %, also can't see the further raising effect with the corresponding thermal oxidation stability of content and sludge inhibition, and, the inadequate tendency that becomes of the solvability in lubricant base.In addition, the content of phenol antioxidant take total composition as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.1 quality %, more preferably more than the 0.2 quality %.When the content of phenol antioxidant during less than 0.01 quality %, the inadequate tendency because the raising effect of the thermal oxidation stability that its interpolation brings and sludge inhibition becomes.

In addition, the content of the amine antioxidants in the hydraulic oil composition of the present embodiment take total composition as benchmark, is preferably below the 3 quality %, more preferably below the 2 quality %, more preferably below the 1 quality %.Even the content of amine antioxidants surpasses 3 quality %, also can't see the further raising effect with the corresponding thermal oxidation stability of content and sludge inhibition, and, the inadequate tendency that becomes of the solvability in lubricant base.On the other hand, the lower value of the content of amine antioxidants take total composition as benchmark, is preferably more than the 0.01 quality %, more preferably more than the 0.1 quality %, more preferably more than the 0.2 quality %.When the content of amine antioxidants during less than 0.01 quality %, the inadequate tendency because the raising effect of the thermal oxidation stability that its interpolation brings and sludge inhibition becomes.

In addition, the hydraulic oil composition of the present embodiment is considered from the viewpoint that improves rubbing characteristics, preferably contains oiliness improver.

As oiliness improver, can enumerate ester oiliness improver, pure oiliness improver, carboxylic acid oiliness improver, ether oiliness improver, amine oiliness improver, acid amides oiliness improver etc.

The ester oiliness improver can obtain by making alcohol and carboxylic acid reaction.As alcohol, can be monohydroxy-alcohol, also can be polyvalent alcohol.In addition, as carboxylic acid, can be monoprotic acid, also can be polyprotonic acid.

As the monohydroxy-alcohol that consists of the ester oiliness improver, usually to use carbon number be 1～24, be preferably 1～12, more preferably 1～8 monohydroxy-alcohol, as this alcohol, can be straight chain, also can be side chain, and can be saturated, and also can be undersaturated.Alcohol as carbon number 1～24, for example can enumerate particularly methyl alcohol, ethanol, the propyl alcohol of straight or branched, the butanols of straight or branched, the amylalcohol of straight or branched, the hexanol of straight or branched, the enanthol of straight or branched, the octanol of straight or branched, the nonyl alcohol of straight or branched, the decyl alcohol of straight or branched, the hendecanol of straight or branched, the dodecanol of straight or branched, the tridecyl alcohol of straight or branched, the tetradecanol of straight or branched, the pentadecylic alcohol of straight or branched, the cetyl alcohol of straight or branched, the heptadecanol of straight or branched, the Stearyl alcohol of straight or branched, the nonadecanol of straight or branched, the eicosanol of straight or branched, the heneicosane alcohol of straight or branched, the tricosanol of straight or branched, the Tetracosyl alcohol of straight or branched and their mixture etc.

In addition, as the polyvalent alcohol that consists of the ester oiliness improver, usually use 2～10 yuan, preferred 2～6 yuan polyvalent alcohol.Polyvalent alcohol as 2～10 for example can be enumerated particularly, ethylene glycol, glycol ether, polyoxyethylene glycol (3～15 polymers of ethylene glycol), propylene glycol, dipropylene glycol, polypropylene glycol (3～15 polymers of propylene glycol), 1, ammediol, 1,2-propylene glycol, 1,3 butylene glycol, BDO, 2-methyl isophthalic acid, 2-propylene glycol, 2-methyl isophthalic acid, ammediol, 1,2-pentanediol, 1,3-pentanediol, 1, the dibasic alcohol such as 4-pentanediol, 1,5-PD, neopentyl glycol; Glycerine, Polyglycerine (2～8 polymers of glycerine, such as Glycerol dimer, triglycerin, four glycerine etc.), trimethylol-alkanes (trimethylolethane, TriMethylolPropane(TMP), tri hydroxy methyl butane etc.) and their 2～8 polymers, tetramethylolmethane and their 2～4 polymers, 1,2,4-trihydroxybutane, 1,3,5-penta triol, 1,2,6-hexanetriol, 1,2, the polyvalent alcohols such as 3,4-butantetraol, Sorbitol Powder, sorbitan, Sorbitol Powder glycerol condensate, adonitol, arabitol, Xylitol, mannitol; The carbohydrates such as wood sugar, pectinose, ribose, rhamnosyl, glucose, fructose, semi-lactosi, seminose, sorbose, cellobiose, maltose, isomaltose, trehalose, sucrose and their mixture etc.

In these polyvalent alcohols, preferred ethylene glycol, glycol ether, polyoxyethylene glycol (3～10 polymers of ethylene glycol), propylene glycol, dipropylene glycol, polypropylene glycol (3～10 polymers of propylene glycol), 1, ammediol, the 2-methyl isophthalic acid, the 2-propylene glycol, the 2-methyl isophthalic acid, ammediol, dimethyltrimethylene glycol, glycerine, Glycerol dimer, triglycerin, trimethylol-alkanes (trimethylolethane, TriMethylolPropane(TMP), tri hydroxy methyl butane etc.) and their 2～4 polymers, tetramethylolmethane, dipentaerythritol, 1,2, the 4-trihydroxybutane, 1,3,5-penta triol, 1,2, the 6-hexanetriol, 1,2,3,4-butantetraol, Sorbitol Powder, sorbitan, the Sorbitol Powder glycerol condensate, adonitol, arabitol, Xylitol, the polyvalent alcohol that mannitol etc. are 2～6 yuan and their mixture etc.More preferably ethylene glycol, propylene glycol, neopentyl glycol, glycerine, trimethylolethane, TriMethylolPropane(TMP), tetramethylolmethane, sorbitan and their mixture etc.

Consisting of the alcohol of ester oiliness improver, as mentioned above, can be monohydroxy-alcohol, also can be polyvalent alcohol, from the better considerations such as viewpoint of rubbing characteristics, is preferably polyvalent alcohol.

In addition, consist of in the acid of ester oiliness improver, as monoprotic acid, usually use the lipid acid of carbon number 2～24, this lipid acid can be straight chain, also can be side chain, and can be saturated, also can be undersaturated.Monoprotic acid can use separately a kind, perhaps also can will be used in combination more than 2 kinds.

As polyprotonic acid, can enumerate diprotic acid, trimellitic acid etc., be preferably diprotic acid.Diprotic acid can be any in chain diprotic acid, the ring-type diprotic acid.In addition, when being the chain diprotic acid, can be in straight chain shape, the chain any, in addition, can be in saturated, unsaturated any.As the chain diprotic acid, the chain diprotic acid of preferred carbon number 2～16, for example can enumerate particularly oxalic acid, propanedioic acid, the Succinic Acid of straight or branched, the pentanedioic acid of straight or branched, the hexanodioic acid of straight or branched, the pimelic acid of straight or branched, the suberic acid of straight or branched, the nonane diacid of straight or branched, the sebacic acid of straight or branched, the undecane diacid of straight or branched, the dodecanedioic acid of straight or branched, the undecane dicarboxylic acid of straight or branched, the tetradecane diacid of straight or branched, the pentadecane dicarboxylic acid of straight or branched, the Thapsic acid of straight or branched, the hexene diacid of straight or branched, the pentene dicarboxylic acid of straight or branched, the octene diacid of straight or branched, the nonene diacid of straight or branched, the octene dicarboxylic acid of straight or branched, the undecene diacid of straight or branched, the decene dicarboxylic acid of straight or branched, the tridecylene diacid of straight or branched, the tetracosendioic acid of straight or branched, the heptadecene diacid of straight or branched, the hexadecylene diacid of straight or branched and their mixture etc.In addition, as the ring-type diprotic acid, can enumerate 1,2-cyclohexane dicarboxylic acid, 4-tetrahydrobenzene-1,2-dicarboxylic acid, aromatic dicarboxylic acid etc.Wherein, consider preferred chain diprotic acid from the viewpoint of stability.

As the acid that consists of ester class oiliness improver, as mentioned above, can be monoprotic acid, also can be polyprotonic acid, consider preferred monoprotic acid from the viewpoint that the raising effect of rubbing characteristics is better.

Alcohol in the ester class oiliness improver is arbitrarily with the combination of acid, does not have particular restriction, for example can enumerate the ester that is combined to form by following (i)～(vii).(i) mixed ester of the mixture of mixed ester (vii) monohydroxy-alcohol of the mixture formation of mixed ester (vi) polyvalent alcohol of the mixture of ester (v) monohydroxy-alcohol of ester (iv) polyvalent alcohol of ester (iii) monohydroxy-alcohol of ester (ii) polyvalent alcohol of monohydroxy-alcohol and monoprotic acid formation and monoprotic acid formation and polyprotonic acid formation and polyprotonic acid formation, polyvalent alcohol and polyprotonic acid formation and monoprotic acid, polyprotonic acid, polyvalent alcohol and monoprotic acid, polyprotonic acid formation.

The various esters of above-mentioned (ii)～(vii) can be the hydroxyl of polyvalent alcohol or the whole esterified full esters that form of carboxyl of polyprotonic acid, in addition, it also can be the partial ester that a part wherein left behind as hydroxyl or carboxyl, consider from the viewpoint of the raising effect of rubbing characteristics, be preferably partial ester.

In the ester of above-mentioned (i)～(vii), the ester that preferred (ii) polyvalent alcohol and monoprotic acid form.The raising effect of the rubbing characteristics of this ester is very high.

In addition, in the ester of above-mentioned (ii), monacid carbon number is considered from the viewpoint that rubbing characteristics further improves, and is preferably more than 10, more preferably more than 12, more preferably more than 14.

In addition, monacid carbon number is considered from the viewpoint that prevents from separating out, and is preferably below 28, more preferably below 26, more preferably below 24.As this ester, can enumerate glyceryl monooleate, dehydrated sorbitol mono-fatty acid ester etc.

As pure oiliness improver, can enumerate illustrated alcohol in the explanation of above-mentioned ester oiliness improver.The carbon number of alcohol oiliness improver is considered from the viewpoint that improves rubbing characteristics, is preferably more than 6, more preferably more than 8, most preferably is more than 10.In addition, if carbon number is excessive, then might becomes and easily separate out, therefore, carbon number is preferably below 24, more preferably below 20, most preferably is below 18.

As the carboxylic acid oiliness improver, can be monoprotic acid, also can be polyprotonic acid.As this carboxylic acid, for example can enumerate illustrated monoprotic acid and polyprotonic acid in the explanation of ester oiliness improver.Wherein, consider preferred monoprotic acid from the viewpoint that improves rubbing characteristics.In addition, the carbon number of carboxylic acid oiliness improver is considered from the viewpoint that improves rubbing characteristics, is preferably more than 6, more preferably more than 8, most preferably is more than 10.In addition, if the carbon number of carboxylic acid oiliness improver is excessive, then might becomes and easily separate out, therefore, carbon number is preferably below 24, more preferably below 20, most preferably is below 18.

As the ether oiliness improver, can enumerate the etherate of 3～6 yuan aliphatic polyol, 3～6 yuan two molecule condensess of aliphatic polyol or etherate of three molecule condensess etc.

The etherate of 3～6 yuan aliphatic polyol for example, is represented by following general formula (35)～(40).[changing 36]

[changing 37]

[changing 38]

[changing 39]

[changing 40]

[changing 41]

[in the formula, R ⁹¹～R ¹¹⁵Can be identical or different, represent separately the alkyl, allyl group, aralkyl of the straight or branched of hydrogen atom or carbon number 1～18, by-(R ^aO) _n-R ^b(wherein, R ^aThe alkylidene group of expression carbon number 2～6; R ^bAlkyl, allyl group, the aralkyl of expression carbon number 1～20; N represents 1～10 integer) expression the glycol ethers residue].

As the concrete example of 3～6 yuan aliphatic polyols, can enumerate glycerine, TriMethylolPropane(TMP), tetrahydroxybutane, tetramethylolmethane, arabitol, Sorbitol Powder, mannitol etc.As the R in above-mentioned general formula (35)～(40) ⁹¹～R ¹¹⁵, can enumerate methyl, ethyl, n-propyl, sec.-propyl, various butyl, various amyl group, various hexyl, various heptyl, various octyl group, various nonyl, various decyl, various undecyl, various dodecyl, various tridecyl, various tetradecyl, various pentadecyl, various hexadecyl, various heptadecyl, various octadecyl, phenyl, benzyl etc.In addition, above-mentioned etherate also comprises R ⁹¹～R ¹¹⁵A part be the part etherate of hydrogen atom.

As two molecule condensess of 3～6 yuan aliphatic polyols or the etherate of three molecule condensess, can enumerate by the condenses of the same race or not of the same race in the compound of above-mentioned general formula (35)～(40) expression.For example, represented by general formula (41) and (42) respectively by two molecule condensess of the alcohol of general formula (35) expression and the etherate of three molecule condensess.In addition, represented by general formula (43) and (44) respectively by two molecule condensess of the alcohol of general formula (38) expression and the etherate of three molecule condensess.[changing 42]

[changing 43]

[changing 44]

[changing 45]

[in the formula, R ⁹¹～R ⁹³And R ¹⁰¹～R ¹⁰⁴Respectively the expression with formula (35) in R ⁹¹～R ⁹³And the R in the formula (38) ¹⁰¹～R ¹⁰⁴Identical definition content].

As two molecule condensess of 3～6 yuan aliphatic polyols, the concrete example of three molecule condensess, can enumerate Glycerol dimer, ditrimethylolpropane, dipentaerythritol, two Sorbitol Powder, triglycerin, three (TriMethylolPropane(TMP)), tripentaerythritol, triallylidene sorbitol etc.

In the ether oiliness improver by general formula (35)～(40) expression, six propyl ethers of two (methoxyl group isopropylidene) dodecyl, three ethers of phenylbenzene octyl group three ethers of preferably glycerine, TriMethylolPropane(TMP), four hexyl ether of tetramethylolmethane, Sorbitol Powder, the dimethyl dioctyl tetraether of Glycerol dimer, four (methoxyl group isopropylidene) decyl pentaether of triglycerin, six propyl ethers of dipentaerythritol, pentamethyl-octyl group six ethers of tripentaerythritol.

The oiliness improver that can use in the present invention except above-mentioned, also can be enumerated amine oiliness improver, acid amides oiliness improver etc.

As the amine oiliness improver, can enumerate monoamine, polyamines, alkanolamine etc., wherein, consider preferred monoamine from the viewpoint that improves rubbing characteristics.

As monoamine, for example can enumerate particularly MMA, dimethylamine, Trimethylamine 99, mono aminoethane, diethylamine, triethylamine, single propylamine, dipropyl amine, tripropyl amine, dibutyl amine, dibutylamine, Tributylamine, monoamylamine, diamylamine, triamylamine, single hexylamine, dihexylamine, single heptyl amice, two heptyl amices, single octylame, Di-Octyl amine, single nonyl amine, single decyl amine, single undecyl amine, single lauryl amine, single tridecyl amine, single tetradecylamine, single pentadecyl amine, single hexadecylamine, single heptadecyl amine, single octadecylamine, single nonadecyl amine, single eicosyl amine, single heneicosyl amine, single docosyl amine, single tricosyl amine, dimethyl (ethyl) amine, dimethyl (propyl group) amine, dimethyl (butyl) amine, dimethyl (amyl group) amine, dimethyl (hexyl) amine, dimethyl (heptyl) amine, dimethyl (octyl group) amine, dimethyl (nonyl) amine, dimethyl (decyl) amine, dimethyl (undecyl) amine, dimethyl (dodecyl) amine, dimethyl (tridecyl) amine, dimethyl (tetradecyl) amine, dimethyl (pentadecyl) amine, dimethyl (hexadecyl) amine, dimethyl (heptadecyl) amine, dimethyl (octadecyl) amine, dimethyl (nonadecyl) amine, dimethyl (eicosyl) amine, dimethyl (heneicosyl) amine, the alkylamines such as dimethyl (tricosyl) amine; Mono-vinyl amine, divinyl amine, trivinyl amine, single propenyl amine, diallyl amine, three propenyl amine, only son's alkenyl amine, dibutene base amine, three butenyl amine, single pentenyl amine, diamylene amine, three pentenyl amine, single hexenyl amine, two hexenyl amine, single heptenyl amine, two heptenyl amine, single octenyl amine, two octenyl amine, list alkenyl amine in the ninth of the ten Heavenly Stems, list alkenyl amine in the last of the ten Heavenly stems, single undecenyl amine, single dodecenyl succinic amine, single tridecylene base amine, single tetradecene base amine, Dan Shiwu carbon alkenyl amine, single cetene base amine, single heptadecene base amine, single vaccenic acid base amine, Dan Shijiu carbon alkenyl amine, single eicosylene base amine, single heneicosene base amine, single two dodecenyl succinic amine, the alkenyl amines such as single tricosene base amine; Dimethyl (vinyl) amine, dimethyl (propenyl) amine, dimethyl (butenyl) amine, dimethyl (pentenyl) amine, dimethyl (hexenyl) amine, dimethyl (heptenyl) amine, dimethyl (octenyl) amine, dimethyl (nonene base) amine, dimethyl (decene base) amine, dimethyl (undecenyl) amine, dimethyl (dodecenyl succinic) amine, dimethyl (tridecylene base) amine, dimethyl (tetradecene base) amine, dimethyl (15 carbene base) amine, dimethyl (cetene base) amine, dimethyl (heptadecene base) amine, dimethyl (vaccenic acid base) amine, dimethyl (19 carbene base) amine, dimethyl (eicosylene base) amine, dimethyl (heneicosene base) amine, the monoamine with alkyl and thiazolinyl of dimethyl (tricosene base) amine etc.; Single phenylethylamine), dibenzyl amine, two (1-phenylethyl) amine, two (2-phenyl ethylidene) amine (another name: the aromatic series substituted alkylamine such as phenpromethamine) monobenzyl amine, (1-phenylethyl) amine, (2-phenylethyl) amine (another name:; The Cycloalkyl amine of the carbon number 5～16 of monocycle amylamine, dicyclo amylamine, three cyclopentamine, monocycle hexylamine, dicyclo hexylamine, monocycle heptyl amice, dicyclo heptyl amice etc.; The monoamine with alkyl and cycloalkyl of dimethyl (cyclopentyl) amine, dimethyl (cyclohexyl) amine, dimethyl (suberyl) amine etc.; (methylcyclopentyl) amine, two (methylcyclopentyl) amine, (dimethylcyclopentyl) amine, two (dimethylcyclopentyl) amine, (ethyl cyclopentyl) amine, two (ethyl cyclopentyl) amine, (methylethyl cyclopentyl) amine, two (methylethyl cyclopentyl) amine, (diethyl cyclopentyl) amine, (methylcyclohexyl) amine, two (methylcyclohexyl) amine, (Dimethylcyclohexyl) amine, two (Dimethylcyclohexyl) amine, (ethyl cyclohexyl) amine, two (ethyl cyclohexyl) amine, (methylethyl cyclohexyl) amine, (diethyl cyclohexyl) amine, (methyl suberyl) amine, two (methyl suberyl) amine, (dimethyl suberyl) amine, (ethyl suberyl) amine, (methylethyl suberyl) amine, the alkyl-cycloalkyl amine of (diethyl suberyl) amine etc.; Deng.In addition, in the above-mentioned monoamine, also comprise tallow amine etc., by the derivative monoamine that forms of grease.Be explained, these compounds comprise whole isomer separately.

In the above-mentioned monoamine, consider from the viewpoint that improves rubbing characteristics, especially, preferred alkyl amine, the monoamine with alkyl and thiazolinyl, the monoamine with alkyl and cycloalkyl, Cycloalkyl amine and alkyl-cycloalkyl amine, more preferably alkylamine, have the monoamine of alkyl and thiazolinyl.

Carbon number about monoamine does not have particular restriction, considers from the viewpoint of rust-preventing characteristic, is preferably more than 8, more preferably more than 12.In addition, consider from the viewpoint that improves rubbing characteristics, be preferably below 24, more preferably below 18.

And then, for also not having particular restriction with the number of the alkyl of nitrogen atom bonding in the monoamine, consider from the viewpoint that improves rubbing characteristics, be preferably 1～2, more preferably 1.

As the acid amides oiliness improver, the nitrogenous compounds such as amine compound that can enumerate the alkyl of the lipid acid or its acyl chlorides and the ammonia that make carbon number 6～30 or the alkyl that only contains carbon number 1～8 in molecule or hydroxyl react and acid amides of obtaining etc.

As said lipid acid herein, can be straight chain fatty acid, also can be branched chain fatty acid, can be saturated fatty acid also can be unsaturated fatty acids.And, wish that its carbon number is 6～30, is preferably 9～24.

As this lipid acid, for example can enumerate particularly, the saturated fatty acids such as enanthic acid, sad, n-nonanoic acid, capric acid, undecanoic acid, dodecylic acid, tridecanoic acid, tetradecanoic acid, pentadecylic acid, hexadecanoic acid, margaric acid, octadecanoic acid, nondecylic acid, arachic acid, heneicosanoic acid, docosoic acid, tricosanic acid, Lignoceric acid, pentacosoic acid, hexacosanoic acid, carboceric acid, octocosoic acid, montanic acid, triacontanoic acid (these saturated fatty acids can be the straight chain shapes, also can be chains); Heptenoic acid, octylenic acid, nonenoic acid, decylenic acid, undecylenic acid, dodecenoic acid, tridecylenic acid, tetradecenoic acid, pentadecylenic acid, hexadecylenic acid, heptadecenoic acid, octadecenoic acid (comprising oleic acid), jecoleic acid, eicosenoic acid, heneicosene acid, Decosahedaenoic acid, tricosenoic acid, tetracosenoic acid, Timnodonic Acid, hexacosenoic acid, cerotene acid, two octadecenoic acids, two jecoleic acids, (these unsaturated fatty acidss can be the straight chain shapes to the unsaturated fatty acidss such as lumequeic acid, also can be a chain, and the position of two keys also be arbitrarily); Deng, preferably use lauric acid, tetradecanoic acid, palmitinic acid, stearic acid, oleic acid, by the derivative straight chain fatty acid (coco-nut oil fatty acid etc.) of various greases or adopt the synthetic straight chain fatty acid such as oxo synthesis and the mixture of branched chain fatty acid etc.

As with the nitrogenous compound of above-mentioned fatty acid response, can enumerate ammonia particularly; The alkylamines such as MMA, mono aminoethane, single propylamine, dibutyl amine, monoamylamine, single hexylamine, single heptyl amice, single octylame, dimethylamine, methyl ethyl-amine, diethylamine, methyl propylamine, ethyl propylamine, dipropyl amine, methylbutylamine, ethyl butyl amine, propyl group butylamine, dibutylamine, diamylamine, dihexylamine, two heptyl amices, Di-Octyl amine (alkyl can be the straight chain shape, also can be a chain); The alkanolamines (chain triacontanol base can be the straight chain shape, also can be a chain) such as single carbinolamine, monoethanolamine, single Propanolamine, only son's hydramine, single amylalcohol amine, single hexanol amine, single enanthol amine, single octanol amine, single nonyl alcohol amine, dimethanolamine, methanol/ethanol amine, diethanolamine, methyl alcohol Propanolamine, ethanol propanol amine, dipropanolamine, methyl alcohol butanolamine, ethanol and butanol amine, propyl alcohol butanolamine, two butanolamines, diamyl hydramine, two hexanol amine, two enanthol amine, two octanol amine; And their mixture etc.

As fatty amide, particularly, particularly preferably use laurylamide, lauric acid diethyl amide, the single propyl alcohol acid amides of lauric acid, myristic amide, the tetradecanoic acid diglycollic amide, tetradecanoic acid list propyl alcohol acid amides, palmitic amide, the palmitinic acid diglycollic amide, palmitinic acid list propyl alcohol acid amides, stearylamide, Stearic acid diethanolamine salt, stearic acid list propyl alcohol acid amides, oleylamide, oleic acid diethyl amide, oleic acid list propyl alcohol acid amides, the Oleum Cocois fatty amide, cocoanut fatty acid diethanolamide, coco-nut oil fatty acid list propyl alcohol acid amides, the synthetic mixing-in fat acid amides of carbon number 12～13, the synthetic mixed fatty acid diglycollic amide of carbon number 12～13, the synthetic mixed fatty acid list propyl alcohol acid amides of carbon number 12～13, and their mixture etc.

In the oiliness improver, consider from the viewpoint of the raising effect of rubbing characteristics, be preferably polyol partial esters and fatty amide.

The content of the oiliness improver in the hydraulic oil composition of the present embodiment is arbitrarily, consider from the viewpoint that the raising effect of rubbing characteristics is good, take total composition as benchmark, be preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %, more preferably more than the 0.1 quality %.In addition, this content is considered from the viewpoint that prevents from separating out, and take total composition as benchmark, is preferably below the 10 quality %, more preferably below the 7.5 quality %, more preferably below the 5 quality %.

In addition, the hydraulic oil composition of the present embodiment is considered from the viewpoint that improves thermal oxidation stability, preferably contains the triazole and/or its derivative that have by the structure of following formula (45) expression.[changing 46]

In the formula (45), 2 dotted lines are illustrated in separately the nuclear substituted identical or different substituting group of triazole, are preferably alkyl, and the two is bonding and consist of cyclic group mutually, for example fused benzene rings.

As triazole and/or the preferred compound of its derivative, be benzotriazole and/or its derivative.

As above-mentioned benzotriazole, can enumerate the compound by following formula (46) expression.[changing 47]

In addition, as benzotriazole derivatives, for example can enumerate, by the alkyl benzotriazole of following general formula (47) expression with by (alkyl) aminoalkyl group benzotriazole of general formula (48) expression etc.[changing 48] [changing 49]

In the above-mentioned formula (47), R ¹¹⁶The alkyl of the straight or branched of expression carbon number 1～4, preferable methyl or ethyl, and also x represents 1～3 integer, preferred 1 or 2.As R ¹¹⁶, can enumerate such as methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec-butyl, the tertiary butyl etc.As the alkyl benzotriazole by formula (47) expression, particularly consider preferred R from the good viewpoint of resistance to thermooxidation ¹¹⁶Be 1 or 2 compound for methyl or ethyl, x, for example, Methylbenzotriazole (tolyl-triazole), dimethylbiphenyl triazole, ethyl benzotriazole, ethyl-methyl benzotriazole, diethyl benzo triazole or their mixture etc.

In the above-mentioned formula (48), R ¹¹⁷The alkyl of the straight or branched of expression carbon number 1～4, preferable methyl or ethyl; R ¹¹⁸Expression methylene radical or ethylidene; R ¹¹⁹And R ¹²⁰Can be identical or different, represent separately the alkyl of the straight or branched of hydrogen atom or carbon number 1～18, the alkyl of the straight or branched of preferred carbon number 1～12; And y represents 0～3 integer, is preferably 0 or 1.As R ¹¹⁷, can enumerate such as methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec-butyl, the tertiary butyl etc.As R ¹¹⁹And R ¹²⁰For example can enumerate hydrogen atom, methyl, ethyl, propyl group, sec.-propyl, normal-butyl, isobutyl-, sec-butyl, the tertiary butyl, the amyl group of straight or branched, the hexyl of straight or branched, the heptyl of straight or branched, the octyl group of straight or branched, the nonyl of straight or branched, the decyl of straight or branched, the undecyl of straight or branched, the dodecyl of straight or branched, the tridecyl of straight or branched, the tetradecyl of straight or branched, the pentadecyl of straight or branched, the hexadecyl of straight or branched, the heptadecyl of straight or branched, the alkyl such as the octadecyl of straight or branched.

As (alkyl) the amino benzotriazole by above-mentioned formula (48) expression, especially, consider from the viewpoint that oxidation-resistance is good, preferably use R ¹¹⁷For methyl, y are 0 or 1, R ¹¹⁸Be methylene radical or ethylidene, R ¹¹⁹And R ¹²⁰Dialkyl aminoalkyl benzotriazole or dialkyl aminoalkyl tolyl-triazole or their mixture etc. for the alkyl of the straight or branched of carbon number 1～12.As these dialkyl aminoalkyl benzotriazoles, for example can enumerate the dimethylamino methyl benzotriazole, the diethylin Methylbenzotriazole, two (straight or branched) third amino methyl benzotriazole, two (straight or branched) fourth amino methyl benzotriazole, two (straight or branched) penta amino methyl benzotriazole, the own amino methyl benzotriazole of two (straight or brancheds), two (straight or branched) amino methyl in heptan benzotriazole, the hot amino methyl benzotriazole of two (straight or brancheds), two (straight or branched) amino methyl in ninth of the ten Heavenly Stems benzotriazole, two (straight or branched) amino methyl in last of the ten Heavenly stems benzotriazole, two (straight or branched) undecyl amino methyl benzotriazole, two (straight or branched) dodecyl amino methyl benzotriazole; The dimethylaminoethyl benzotriazole, the diethyllaminoethyl benzotriazole, two (straight or branched) third amino-ethyl benzotriazole, two (straight or branched) fourth amino-ethyl benzotriazole, two (straight or branched) penta amino-ethyl benzotriazole, the own amino-ethyl benzotriazole of two (straight or brancheds), two (straight or branched) amino-ethyl in heptan benzotriazole, the hot amino-ethyl benzotriazole of two (straight or brancheds), two (straight or branched) amino-ethyl in ninth of the ten Heavenly Stems benzotriazole, two (straight or branched) amino-ethyl in last of the ten Heavenly stems benzotriazole, two (straight or branched) undecyl amino-ethyl benzotriazole, two (straight or branched) dodecyl amino-ethyl benzotriazole; The dimethylamino methyl tolyl-triazole, diethylin methyl tolyl-triazole, two (straight or branched) third amino methyl tolyl-triazole, two (straight or branched) fourth amino methyl tolyl-triazole, two (straight or branched) penta amino methyl tolyl-triazole, the own amino methyl tolyl-triazole of two (straight or brancheds), two (straight or branched) amino methyl in heptan tolyl-triazole, the hot amino methyl tolyl-triazole of two (straight or brancheds), two (straight or branched) amino methyl in ninth of the ten Heavenly Stems tolyl-triazole, two (straight or branched) amino methyl in last of the ten Heavenly stems tolyl-triazole, two (straight or branched) undecyl amino methyl tolyl-triazole, two (straight or branched) dodecyl amino methyl tolyl-triazole; The dimethylaminoethyl tolyl-triazole, the diethyllaminoethyl tolyl-triazole, two (straight or branched) third amino-ethyl tolyl-triazole, two (straight or branched) fourth amino-ethyl tolyl-triazole, two (straight or branched) penta amino-ethyl tolyl-triazole, the own amino-ethyl tolyl-triazole of two (straight or brancheds), two (straight or branched) amino-ethyl in heptan tolyl-triazole, the hot amino-ethyl tolyl-triazole of two (straight or brancheds), two (straight or branched) amino-ethyl in ninth of the ten Heavenly Stems tolyl-triazole, two (straight or branched) amino-ethyl in last of the ten Heavenly stems tolyl-triazole, two (straight or branched) undecyl amino-ethyl tolyl-triazole, two (straight or branched) dodecyl amino-ethyl tolyl-triazole; Perhaps their mixture etc.

Triazole in the hydraulic oil composition of the present embodiment and/or the content of its derivative are arbitrarily, take total composition as benchmark, are preferably more than the 0.001 quality %, more preferably more than the 0.005 quality %.When the content of triazole and/or its derivative during less than 0.001 quality %, the inadequate tendency because the raising effect of the thermal oxidation stability that its interpolation brings becomes.In addition, the content of triazole and/or its derivative take total composition as benchmark, is preferably below the 1.0 quality %, more preferably below the 0.5 quality %.When surpassing 1.0 quality %, can not get the further raising effect with the corresponding thermal oxidation stability of content, might be unfavorable economically.

In addition, the hydraulic oil composition of the present embodiment, in order further to improve its performance, also can be as required, make it individually or several contain in combination viscosity index improver beyond rust-preventive agent, metal passivator, the above-mentioned decentralized viscosity index improver or detergent-dispersant additive, pour point reducer, defoamer etc. and are the various additives of representative.

As rust-preventive agent, can enumerate particularly the metal soaps such as fatty acid metal salt, lanolin fatty acid metal-salt, oxidized petroleum waves metal-salt; The polyol partial esters classes such as sorbitan fatty acid esters; The ester classes such as lanolin fatty acid ester; The Sulfonates such as calcium sulphonate, barium sulfonate; Oxidized petroleum waves; Amine; Phosphoric acid; Phosphoric acid salt etc.In the present embodiment, can make wherein and contain the compound more than a kind or 2 kinds of from above-mentioned rust-preventive agent, selecting arbitrarily with any amount, usually, and its content, take total composition as benchmark, hope is 0.01～1 quality %.

As metal passivator, particularly, except above-mentioned benzotriazole compound, also can enumerate glyoxaline compound etc.In the present embodiment, can make wherein and contain the compound more than a kind or 2 kinds of from these metal passivators, selecting arbitrarily to measure arbitrarily, usually, and its content, take total composition as benchmark, hope is 0.001～1 quality %.

In addition, as the viscosity index improver beyond the decentralized viscosity index improver, can enumerate particularly the multipolymer of the monomer more than a kind or 2 kinds of from various methacrylic esters, selecting or its hydride, ethene-alpha-olefin copolymer (as alpha-olefin, can enumerate propylene, 1-butylene, 1-amylene etc.) or its hydride, polyisobutene or its hydride, vinylbenzene-hydrogenated diene copolymer and polyoxyethylene alkylphenyl ethene etc., so-called non-dispersive type viscosity index improver etc.In addition, as the detergent-dispersant additive beyond the decentralized viscosity index improver, can enumerate alkenyl succinimide, sulfonate (ester), salicylate (ester), phenates etc.In the present embodiment, can make wherein and contain the compound more than a kind or 2 kinds of from these viscosity index improvers or detergent-dispersant additive, selecting arbitrarily to measure arbitrarily, usually, and its content, take total composition as benchmark, hope is 0.01～10 quality %.

As pour point reducer, can enumerate particularly the multipolymer of the monomer more than a kind or 2 kinds of from various acrylate and methacrylic ester, selecting or its hydride etc.In the present embodiment, can make wherein and contain the compound more than a kind or 2 kinds of from these pour point reducers, selecting arbitrarily to measure arbitrarily, usually, and its content, take total composition as benchmark, hope is 0.01～5 quality %.

As defoamer, can enumerate particularly the type siloxanes such as dimethyl siloxane, fluoro siloxanes.In the present embodiment, can make wherein and contain the compound more than a kind or 2 kinds of from these defoamers, selecting arbitrarily to measure arbitrarily, usually, and its content, take total composition as benchmark, hope is 0.0001～0.05 quality %.

Hydraulic oil composition with the present embodiment of above-mentioned formation can be realized well with high level and balance the over-all properties of wear resistance, rubbing characteristics, thermal oxidation stability and viscosity-temperature profile.Very useful aspect the high performance of hydraulic system and the energy-saving.

Hydraulic efficiency installation as the hydraulic oil composition of using the present embodiment does not have particular restriction, for example can enumerate injection moulding machine, work mechanism, construction implement, iron equipment processed, industry automatic gear (robot), hydraulic hoisting machine etc.

(the 4th embodiment; Metalworking fluid composition) Metalworking fluid composition of the 4th embodiment of the present invention contain the invention described above lubricant base and from ester, alcohol, carboxylic acid and contain phosphorus and/or the compound of sulphur as Constitution Elements at least a kind of lubricity improver selecting.

Be explained, in the Metalworking fluid composition of the present embodiment, the scheme of lubricant base of the present invention is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, in the Metalworking fluid composition of the present embodiment, can use separately the lubricant base of the invention described above, in addition, also can also using more than a kind or 2 kinds lubricant base of the present invention and other base oils.Be explained, the concrete example of other base oils and lubricant base of the present invention shared ratio in mixed base oil, identical with the situation of above-mentioned the 1st embodiment, therefore, be not repeated.

In addition, the Metalworking fluid composition of the present embodiment contain from ester, alcohol, carboxylic acid and contain phosphorus and/or the compound of sulphur as Constitution Elements at least a kind of lubricity improver selecting.

Formation can be 1 yuan of alcohol as the alcohol of the ester of lubricity improver, also can be polyvalent alcohol.In addition, consisting of the carboxylic acid of this ester, can be monoprotic acid, also can be polyprotonic acid.

As 1 yuan of alcohol, usually use 1 yuan of alcohol of carbon number 1～24, as this alcohol, can be straight chain, also can be side chain.Alcohol as carbon number 1～24, for example can enumerate particularly methyl alcohol, ethanol, the propyl alcohol of straight or branched, the butanols of straight or branched, the octanol of straight or branched, the nonyl alcohol of straight or branched, the decyl alcohol of straight or branched, the hendecanol of straight or branched, the dodecanol of straight or branched, the tridecyl alcohol of straight or branched, the tetradecanol of straight or branched, the pentadecylic alcohol of straight or branched, the cetyl alcohol of straight or branched, the heptadecanol of straight or branched, the Stearyl alcohol of straight or branched, the nonadecanol of straight or branched, the eicosanol of straight or branched, the heneicosane alcohol of straight or branched, the tricosanol of straight or branched, the Tetracosyl alcohol of straight or branched and their mixture.

In addition, as polyvalent alcohol, usually use 2～10 yuan, preferred 2～6 yuan polyvalent alcohol.As 2～10 yuan of polyvalent alcohols, for example can enumerate particularly ethylene glycol, glycol ether, polyoxyethylene glycol (3～15 polymers of ethylene glycol), propylene glycol, dipropylene glycol, polypropylene glycol (3～15 polymers of propylene glycol), 1, ammediol, 1,2-propylene glycol, 1,3 butylene glycol, BDO, 2-methyl isophthalic acid, 2-propylene glycol, 2-methyl isophthalic acid, ammediol, 1,2-pentanediol, 1,3-pentanediol, 1,2 yuan of alcohol such as 4-pentanediol, 1,5-PD, neopentyl glycol; Glycerine, Polyglycerine (2～8 polymers of glycerine, such as Glycerol dimer, triglycerin, four glycerine), trimethylol-alkanes (trimethylolethane, TriMethylolPropane(TMP), tri hydroxy methyl butane etc.) and their 2～8 polymers, tetramethylolmethane and their 2～4 polymers, 1,2,4-trihydroxybutane, 1,3,5-penta triol, 1,2,6-hexanetriol, 1,2, the polyvalent alcohols such as 3,4-butantetraol, Sorbitol Powder, sorbitan, Sorbitol Powder glycerol condensate, adonitol, arabitol, Xylitol, mannitol; Carbohydrate and their mixtures such as wood sugar, pectinose, ribose, rhamnosyl, glucose, fructose, semi-lactosi, seminose, sorbose, cellobiose, maltose, isomaltose, trehalose, sucrose.

Wherein, especially, more preferably ethylene glycol, glycol ether, polyoxyethylene glycol (3～10 polymers of ethylene glycol), propylene glycol, dipropylene glycol, polypropylene glycol (3～10 polymers of propylene glycol), 1, ammediol, the 2-methyl isophthalic acid, the 2-propylene glycol, the 2-methyl isophthalic acid, ammediol, neopentyl glycol, glycerine, Glycerol dimer, triglycerin, trimethylol-alkanes (trimethylolethane, TriMethylolPropane(TMP), tri hydroxy methyl butane etc.) and their 2～4 polymers, tetramethylolmethane, dipentaerythritol, 1,2, the 4-trihydroxybutane, 1,3,5-penta triol, 1,2,6-hexanetriol, 1,2,3,4-butantetraol, Sorbitol Powder, sorbitan, the Sorbitol Powder glycerol condensate, adonitol, arabitol, Xylitol, the polyvalent alcohol that mannitol etc. are 2～6 yuan and their mixture etc.More preferably ethylene glycol, propylene glycol, neopentyl glycol, glycerine, trimethylolethane, TriMethylolPropane(TMP), tetramethylolmethane, sorbitan and their mixture etc.

In addition, as the monoprotic acid that consists of ester, being generally the lipid acid of carbon number 6～24, can be straight chain, also can be side chain, and, can be saturated, also can be undersaturated.For example can enumerate particularly the caproic acid of straight or branched, straight or branched sad, the n-nonanoic acid of straight or branched, the capric acid of straight or branched, the undecanoic acid of straight or branched, the dodecylic acid of straight or branched, the tridecanoic acid of straight or branched, the tetradecanoic acid of straight or branched, the pentadecylic acid of straight or branched, the hexadecanoic acid of straight or branched, the octadecanoic acid of straight or branched, the hydroxyl octadecanoic acid of straight or branched, the nondecylic acid of straight or branched, the arachic acid of straight or branched, the heneicosanoic acid of straight or branched, the docosoic acid of straight or branched, the tricosanic acid of straight or branched, the saturated fatty acids such as the Lignoceric acid of straight or branched; The hexenoic acid of straight or branched, the heptenoic acid of straight or branched, the octylenic acid of straight or branched, the nonenoic acid of straight or branched, the decylenic acid of straight or branched, the undecylenic acid of straight or branched, the dodecenoic acid of straight or branched, the tridecylenic acid of straight or branched, the tetradecenoic acid of straight or branched, the pentadecylenic acid of straight or branched, the hexadecylenic acid of straight or branched, the octadecenoic acid of straight or branched, the isorpcinoleic acid of straight or branched, the jecoleic acid of straight or branched, the eicosenoic acid of straight or branched, the heneicosene acid of straight or branched, the Decosahedaenoic acid of straight or branched, the tricosenoic acid of straight or branched, the unsaturated fatty acidss such as the tetracosenoic acid of straight or branched, and their mixture.Wherein, the particularly preferably unsaturated fatty acids of the saturated fatty acid of carbon number 8～20, carbon number 8～20 and their mixture.

As the polyprotonic acid that consists of the ester oiliness improver, can enumerate the diprotic acid of carbon number 2～16 and trimellitic acid etc.As the diprotic acid of carbon number 2～16, can be straight chain, also can be side chain, and, can be saturated, also can be undersaturated.For example can enumerate particularly the undecane diacid of the nonane diacid of the hexanodioic acid of the Succinic Acid of oxalic acid, propanedioic acid, straight or branched, the pentanedioic acid of straight or branched, straight or branched, the suberic acid of straight or branched, straight or branched, the sebacic acid of straight or branched, straight or branched, the dodecanedioic acid of straight or branched, the undecane dicarboxylic acid of straight or branched, the tetradecane diacid of straight or branched, the pentadecane dicarboxylic acid of straight or branched, the Thapsic acid of straight or branched; The tridecylene diacid of the undecene diacid of the nonene diacid of the hexene diacid of straight or branched, the octene diacid of straight or branched, straight or branched, the octene dicarboxylic acid of straight or branched, straight or branched, the decene dicarboxylic acid of straight or branched, straight or branched, the tetracosendioic acid of straight or branched, the heptadecene diacid of straight or branched, the hexadecylene diacid of straight or branched; And their mixture.

Among the present invention, can use arbitrarily alcohol and the ester that carboxylic acid combines, this not had particular determination.Can preferably use the ester shown in following (i)～(vii) particularly.(i) ester of mixed carboxylic acid's formation of the alcohol mixture of ester (vii) monohydroxy-alcohol of mixed carboxylic acid's formation of ester (vi) polyvalent alcohol of the alcohol mixture of ester (v) monohydroxy-alcohol of ester (iv) polyvalent alcohol of ester (iii) monohydroxy-alcohol of ester (ii) polyvalent alcohol of monohydroxy-alcohol and monoprotic acid formation and monoprotic acid formation and polyprotonic acid formation and polyprotonic acid formation and polyvalent alcohol and polyprotonic acid formation and monoprotic acid and polyprotonic acid and polyvalent alcohol and monoprotic acid and polyprotonic acid.

Be explained, when using polyvalent alcohol as pure composition, this ester can be the whole esterified full esters of hydroxyl in the polyvalent alcohol, in addition, also can be the not esterified and partial ester that still keep as hydroxyl of a part of hydroxyl.In addition, when using polyprotonic acid as the carboxylic acid composition, this ester can be the whole esterified full esters of carboxyl in the polyprotonic acid, also can be the not esterified and partial ester that still be retained as carboxyl of a part of carboxyl.

As the ester that uses in the present embodiment, can use above-mentioned any ester, wherein, consider from the viewpoint that processibility is better, the preferred ester of the ester that forms of (i) monohydroxy-alcohol and monoprotic acid, (iii) monohydroxy-alcohol and polyprotonic acid formation, the more preferably ester that forms of (i) monohydroxy-alcohol and monoprotic acid, the ester that most preferably will (i) monohydroxy-alcohol forms with monoprotic acid and (iii) the ester usefulness also of monohydroxy-alcohol and polyprotonic acid formation.

In the present embodiment, the total carbon number of the ester that forms for (i) monohydroxy-alcohol of preferred use and monoprotic acid does not have particular restriction, and the lower value that preferably adds up to carbon number is the ester more than 7, more preferably the ester more than 9, the most preferably ester more than 11.In addition, the higher limit that preferably adds up to carbon number is the ester below 26, more preferably the ester below 24, the most preferably ester below 22.Carbon number for above-mentioned monohydroxy-alcohol does not have particular restriction, preferred carbon number 1～10, and more preferably carbon number 1～8, further preferred carbon number 1～6, most preferably carbon number 1～4.There is not particular restriction for above-mentioned monacid carbon number, preferred carbon number 8～22, more preferably carbon number 10～20, and most preferably carbon number 12～18.Be explained, if the carbon number of above-mentioned total carbon number, above-mentioned alcohol and above-mentioned monacid carbon number surpass respectively above-mentioned higher limit, then exist to make and pollute or the possibility that increases of corrosion becomes greatly, lost flowability and unworkable possibility become large or because the solvability in lubricant base reduces large etc. the tendency of the possibility change of separating out in the winter time.In addition, if the carbon number of above-mentioned total carbon number, above-mentioned alcohol and above-mentioned monacid carbon number separately less than lower value, then oilness has the tendency that becomes inadequate, in addition, might be because foul smell cause operating environment to worsen.

The form of the ester that forms for preferred (iii) monohydroxy-alcohol that uses in the present embodiment and polyprotonic acid does not have particular restriction, is preferably the diester that represented by following general formula (49) or the ester of trimellitic acid.R ¹²¹-O-CO-(CH ₂) _n-CO-O-R ¹²²(49) [in the formula, R ¹²¹And R ¹²²Can be identical or different, represent separately alkyl; N represents 4～8 integer].

R in the general formula (49) ¹²¹And R ¹²²Represent separately alkyl, the carbon number of this alkyl is preferably 3～10.Be explained, if the carbon number of alkyl less than 3, then might be able to not be expected the raising effect of oilness, in addition, might be because foul smell causes operating environment to worsen.In addition, if the carbon number of alkyl surpasses 10, then exist make pollute or the possibility that increases of corrosion becomes greatly, in the winter time lost flowability and unworkable possibility become large, because the solvability in lubricant base reduces large etc. the tendency of the possibility change of separating out.

As by the R in the general formula (49) ¹²¹And R ¹²²Shown alkyl can be enumerated alkyl, thiazolinyl, alkyl-cycloalkyl, alkyl phenyl, phenylalkyl etc., particularly preferably alkyl.

Work as R ¹²¹, R ¹²²During for alkyl, this alkyl can be any in straight chained alkyl or the branched-chain alkyl, and in addition, also can mix in a part has straight chained alkyl and branched-chain alkyl, preferred branched-chain alkyl.

As by R ¹²¹And R ¹²²The alkyl of expression, for example can enumerate particularly the heptyl of the amyl group of the propyl group of straight or branched, the butyl of straight or branched, straight or branched, the hexyl of straight or branched, straight or branched, the octyl group of straight or branched, the nonyl of straight or branched, the decyl of straight or branched etc.

In addition, the n in the general formula (49) represents 4～8 integer.Be explained, if n surpasses 8, then exist make pollute or the possibility that increases of corrosion becomes greatly, in the winter time lost flowability and unworkable possibility become large, because the solvability in lubricant base reduces large etc. the tendency of the possibility change of separating out.In addition, if n less than 4, then exist possibly can't expect oilness the raising effect, because foul smell causes the tendency of operating environment deterioration etc.And then, consider from the easy acquisition of raw material and the viewpoint of price, particularly preferably n is 4 or 6 diester.

Can adopt arbitrarily by the diester of above-mentioned general formula (49) expression that method obtains, can enumerate the method etc. that alcohol such as the straight chain saturated dicarboxylic acid that makes carbon number 6～10 (being in order hexanodioic acid, pimelic acid, suberic acid, nonane diacid, sebacic acid from carbon number 6 beginnings) or its derivative and carbon number 3～10 carries out esterification.

In addition, when ester is the ester that is formed by trimellitic acid and 1 yuan alcohol, there is not particular restriction for the carbon number of this 1 yuan of alcohol, preferred carbon number 1～10, more preferably carbon number 1～8, further preferred carbon number 1～6, most preferably carbon number 1～4.Be explained, if the carbon number of 1 yuan of alcohol surpasses 10, then exist make pollute or the possibility that increases of corrosion becomes greatly, in the winter time lost flowability and unworkable possibility become large, because the solvability in lubricant base reduces large etc. the tendency of the possibility change of separating out.The ester of trimellitic acid can be partial ester (monoesters or diester), also can be full ester (three esters).

Can be used as the particularly preferred example of the ester that lubricity improver uses, the diester that can enumerate particularly Laurate methyl, butyl laurate, methyl stearate, butyl stearate, Witconol 2301, butyl oleate and be formed by the alcohol of hexanodioic acid and carbon number 4～10.

In addition, can be used as the alcohol that lubricity improver uses, can enumerate illustrated 1 yuan of pure and mild polyvalent alcohol in the explanation of above-mentioned ester, wherein, preferred 1 yuan pure and mild 2 yuan alcohol more preferably use separately 1 yuan of alcohol, perhaps 1 yuan of alcohol and 2 yuan of alcohol are also used.In addition, as 2 yuan of alcohol, preferably in molecule, have 2 yuan of alcohol of ehter bond.

The carbon number of 1 yuan of pure and mild 2 yuan of alcohol is preferably more than 6, more preferably more than 7, more preferably more than 8, is particularly preferably more than 9.Be explained, if the carbon number of 1 yuan of pure and mild 2 yuan of alcohol less than 6, then the oilness inadequate tendency that becomes in addition, might worsen owing to foul smell cause operating environment.In addition, the carbon number of 1 yuan of pure and mild 2 yuan of alcohol is preferably below 20, more preferably below 18.Be explained, if the carbon number of 1 yuan of pure and mild 2 yuan of alcohol surpasses 20, then exist make pollute or the possibility that increases of corrosion becomes greatly, in the winter time lost flowability and unworkable possibility become large, because the solvability in lubricant base reduces large etc. the tendency of the possibility change of separating out.

Can be used as the particularly preferred example of the alcohol of lubricity improver use, can enumerate particularly 5～9 polymers of lauryl alcohol, tetradecyl alcohol, palmityl alcohol, oleyl alcohol, ethylene glycol, 2～6 polymers of propylene glycol and their mixture more than 2 kinds.

In addition, can be used as the carboxylic acid that lubricity improver uses, can be monoprotic acid, also can be polyprotonic acid.For example can enumerate particularly illustrated monoprotic acid and polyprotonic acid in the explanation of above-mentioned ester.Wherein, consider preferred monoprotic acid from the viewpoint that processibility is better.

Can be used as the carbon number of the carboxylic acid of lubricity improver use, consider from the viewpoint that the raising effect of oilness is better, be preferably more than 6, more preferably more than 8, more preferably more than 10.In addition, from suppress polluting or the viewpoint of the generation of corrosion is considered, the carbon number of carboxylic acid is preferably below 20, more preferably below 18, more preferably below 16.

Can be used as the particularly preferred example of the carboxylic acid of lubricity improver use, can enumerate lauric acid, tetradecanoic acid, palmitinic acid and oleic acid particularly.

Can be used as above-mentioned ester, alcohol and carboxylic acid that lubricity improver uses, its oiliness effect is good especially.In the present embodiment, can use separately in ester, the alcohol and carboxylic acid a kind as lubricity improver, and, also can use the mixture more than 2 kinds, consider preferred ester and 1 yuan of alcohol, more preferably ester from the viewpoint that improves oilness.

As the above-mentioned ester of lubricity improver, the content of alcohol and carboxylic acid, take total composition as benchmark, be preferably 0.1～70 quality %.That is, this content is considered from the viewpoint of the raising effect of oilness, is preferably more than the 0.1 quality %, more preferably more than the 0.2 quality %, more preferably more than the 0.5 quality %.In addition, in case cross at most to exist from content and pollute or the viewpoint of the possibility that increases of corrosion etc. is considered, this content is preferably below the 70 quality %, more preferably below the 60 quality %, more preferably below the 50 quality %, further be preferably below the 15 quality %, be particularly preferably below the 12 quality %, most preferably be below the 10 quality %.

In addition, as containing phosphorus and/or the sulphur compound as Constitution Elements, can enumerate phosphorus compound and sulphur compound.The concrete example of phosphorus compound and preferred form, some is identical with the situation of above-mentioned the 1st embodiment, therefore, omits in this explanation with repeating part.In addition, the concrete example of sulphur compound and preferred form, identical with the situation of above-mentioned the 3rd embodiment, therefore, be not repeated.

In the sulphur compound that uses in the present embodiment, if use at least a kind that selects from dialkyl polysulfide and sulfuration ester, then can obtain with higher level the raising effect of oilness, be preferred therefore.

In addition, can be used as the phosphorus compound that lubricity improver uses, for example can enumerate particularly, except illustrated phosphorus compound in the explanation of above-mentioned the 1st embodiment, also have the metal-salt of these phosphorus compounds etc.

As the metal-salt of phosphorus compound, can enumerate the salt that part or all neutralization of the acidic hydrogen of phosphorus compound is formed by with metal base.As this metal base, can enumerate metal oxide, metal hydroxides, metal carbonate, metal chloride etc., as this metal, can enumerate the basic metal such as lithium, sodium, potassium, caesium particularly; The alkaline-earth metals such as calcium, magnesium, barium; The heavy metals such as zinc, copper, iron, lead, nickel, silver, manganese etc.Wherein, alkaline-earth metal and the zinc such as preferred calcium, magnesium.

The metal-salt of above-mentioned phosphorus compound, its structure is according to the number of the OH base of the valence mumber of metal and phosphorus compound or SH base and different, therefore, for its structure without any restriction, for example, make zinc oxide 1mol and phosphodiester (the OH base is 1) when 2mol reacts, although can think and to obtain compound by the structure of following formula (50) expression as principal constituent, thinking the molecule that also has the polymerization materialization.

[changing 50]

In addition, for example, make zinc oxide 1mol and phosphate monoester (the OH base is 2) when 1mol reacts, although can think and to obtain compound by the structure of following formula (51) expression as principal constituent, thinking the molecule that also has the polymerization materialization.

[changing 51]

In addition, also can use their mixture more than 2 kinds.

In the present embodiment, in the above-mentioned phosphorus compound, consider the amine salt of preferably phosphoric acid ester, phosphate ester acid and phosphate ester acid from the viewpoint of the raising effect that obtains higher oilness.

In the present embodiment, as the particularly preferred example of the compound that contains phosphorus and/or sulphur that is used as lubricity improver, can enumerate Tritolyl Phosphate particularly, the tricresyl phosphate Lauryl Ester, the tricresyl phosphite Lauryl Ester, tricresyl phosphite oil base ester, phosphorous acid dilauryl ester, phosphorous acid dilauryl one hydrogen ester, the lauric acid phosphoric acid ester, the sulfuration grease, the sulfuration ester, the Diphenyl disulfide compound, the benzyl disulfide compound, didodecyl disulfide, two uncle's nonyl polysulfides, the tri o cresyl thiophosphate Lauryl Ester, trithio tricresyl phosphite Lauryl Ester, molybdenumdisulphide, molybdenum dithiophosphate, zinc dithiophosphate, molybdenum dithiocarbamate, and zinc dithiocarbamate.

The Metalworking fluid composition of the present embodiment as lubricity improver, can only contain the side in sulphur compound or the phosphorus compound, also can contain sulphur compound and phosphorus compound.Consider from the viewpoint of the improvement effect of further raising oilness, preferably contain phosphorus compound or contain sulphur compound and phosphorus compound, more preferably contain sulphur compound and phosphorus compound.

When the Metalworking fluid composition of the present embodiment comprises when containing phosphorus and/or sulphur as the compound of Constitution Elements, containing phosphorus and/or sulphur is arbitrarily as the content of the compound of Constitution Elements, consider from the viewpoint that improves oilness, take total composition as benchmark, be preferably more than the 0.005 quality %, more preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %.In addition, consider from the viewpoint that prevents inordinate wear, this content take total composition as benchmark, is preferably below the 15 quality %, more preferably below the 10 quality %, more preferably below the 7 quality %.Be explained, said content herein when independent use contains phosphorus and/or sulphur as a kind in the compound of Constitution Elements, refers to its content; When being used in combination more than 2 kinds, refer to that it adds up to content.

In the Metalworking fluid composition of the present embodiment, as lubricity improver, can use separately ester, alcohol, carboxylic acid and contain phosphorus and/or sulphur as a kind in the compound of Constitution Elements, and, also can will be used in combination more than 2 kinds.

The Metalworking fluid composition of the present embodiment, can only contain above-mentioned lubricant base and lubricity improver, but in order further to improve its good effect, also can be as required, and then individually or add in combination antioxidant, rust-preventive agent, anticorrosive agent, defoamer etc. more than 2 kinds.The concrete example of these each additives is identical with the situation of above-mentioned the 1st～the 3rd embodiment, therefore, is not repeated.In addition, in the present embodiment, the total content of these additives is generally below the 15 quality %, is preferably 10 quality % following (all take total composition as benchmark).

In addition, the Metalworking fluid composition of the present embodiment can also contain water.At this moment, the Metalworking fluid composition of the present embodiment can use with water as external phase, and oil component disperses imperceptibly in this external phase, forms the emulsified state of emulsion; The solvable state of water dissolution in oil component; Perhaps make in water and the suspension that oil component mixes any by violent stirring.

When containing water in the Metalworking fluid composition of the present embodiment, as water, can use tap water, process water, ion exchanged water, distilled water etc., no matter be that hard water or soft water all can.

Kinematic viscosity for the Metalworking fluid composition of the present embodiment does not have particular determination, and generally speaking, the kinematic viscosity in the time of 40 ℃ is preferably at 1～150mm ²In the scope of/s, more preferably at 2～100mm ²In the scope of/s.Be explained, if the kinematic viscosity of Metalworking fluid composition in the time of 40 ℃ is less than 1mm ²/ s, then the processibility inadequate tendency that becomes.In addition, if this kinematic viscosity surpasses 150mm ²/ s, then in being in the oil removing operation of manufacturing procedure back segment, oil content is difficult to remove from workpiece.

Metalworking fluid composition with the present embodiment of above-mentioned formation, even do not improve viscosity or do not increase the consumption of additive, can obtain good processibility yet, and can keep its processibility with high level chronically, therefore, be suitable in the various metal processing.Process as the metal that the Metalworking fluid composition that uses the present embodiment carries out, for example can enumerate, volume is pressed processing, attenuate processing, stretch process, punch process, forging processing (comprising heat forged), cutting ground finish, rolling processing (comprising hot rolling and cold rolling) etc.In addition, the material of the workpiece that is used for these metals processing is not had particular restriction, for example can enumerate iron, stainless steel, aluminium or its alloy, nickel or its alloy, chromium or its alloy, copper or its alloy, zinc or its alloy, titanium or its alloy etc.

Be explained, although the Metalworking fluid composition of the present embodiment can be used for the processing of above-mentioned metal any, preferably according to the kind of metal processing suit in the Metalworking fluid composition of selection the present embodiment kinematic viscosity of lubricant base and kind and the combination of lubricity improver.

For example, when the Metalworking fluid composition of the present embodiment was used for the processing of volume pressure or punch process, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ was preferably 20～150mm ²/ s.In addition, at this moment, as lubricity improver, preferred use alcohol from butyl stearate, carbon number 10～18 (can be straight chain shape or the chain any, in addition, also can be in saturated or unsaturated any.), select in oleic acid, sulfuration ester, sulfuration grease, zinc dithiophosphate and the Tritolyl Phosphate at least a kind, be particularly preferably in following (A-1)～(A-8) any.(A-1) butyl stearate, combination (A-2) oleic acid of sulfuration ester and Tritolyl Phosphate, combination (A-3) butyl stearate of sulfuration ester and Tritolyl Phosphate, lauryl alcohol, oleic acid, combination (A-7) zinc dithiophosphate (A-8) the sulfuration ester of combination (A-6) the sulfuration grease of combination (A-4) the sulfuration ester of sulfuration ester and Tritolyl Phosphate and combination (A-5) the sulfuration ester of Tritolyl Phosphate and zinc dithiophosphate and zinc dithiophosphate.

In addition, when the Metalworking fluid composition of the present embodiment is used for the rolling man-hour that adds, the kinematic viscosity of lubricant base of the present invention in the time of 40 ℃ is preferably 4～20mm ²/ s.In addition, at this moment, as lubricity improver, it is preferred that to use alcohol from butyl stearate, butyl palmitate, Polycizer W 260, Octyl adipate, dinonyl adipate, didecyl adipate, oleic acid, carbon number 10～18 (can be straight chain shape or the chain any, in addition, also can be in saturated or unsaturated any.) and Tritolyl Phosphate in select at least a kind, be particularly preferably in following (B-1)～(B-7) any.(B-1) combination of combination (B-7) di adipate, lauryl alcohol and the oleic acid of combination (B-6) di adipate of combination (B-5) butyl stearate, di adipate and the lauryl alcohol of combination (B-4) butyl stearate, lauryl alcohol and the oleic acid of the combination (B-3) of combination (B-2) butyl stearate of butyl stearate, lauryl alcohol, sulfuration ester and Tritolyl Phosphate and lauryl alcohol sulfuration ester and Tritolyl Phosphate and lauryl alcohol.

(the 5th embodiment; Heat-treatment oil composition) heat-treatment oil composition of the 5th embodiment of the present invention contains lubricant base and the cooling improving agent of the invention described above.

Be explained, in the heat-treatment oil composition of the present embodiment, the form of lubricant base of the present invention is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, in the heat-treatment oil composition of the present embodiment, can use separately the lubricant base of the invention described above, in addition, also can also using more than a kind or 2 kinds lubricant base of the present invention and other base oils.Be explained, the concrete example of other base oils and lubricant base of the present invention shared ratio in mixed base oil is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, the heat-treatment oil composition of the present embodiment except above-mentioned lubricant base, also contains the cooling improving agent.As this cooling improving agent, can enumerate (A-1) polyolefine and/or its hydride, (A-2) pitch and/or its insoluble composition and remove thing, (A-3) salicylic alkali earth metal salt etc.

As the polyolefine of above-mentioned (A-1) composition, can enumerate multipolymer, polybutene, 1-octene oligopolymer, 1-decene oligopolymer and the hydride thereof etc. of ethene and alpha-olefin.(A) in the polyolefine of composition, from the effect of further raising hardenability, the good viewpoint of thermal oxidation stability is considered, preferably use the multipolymer of ethene and alpha-olefin.

Polymeric species for the multipolymer of ethene and alpha-olefin does not have particular restriction, can be in random copolymerization, block copolymerization or the alternating copolymerization any.In addition, the ethene and the alpha-olefin that consist of the copolymerization chain can respectively be done for oneself a kind, also can be more than 2 kinds.

In addition, alpha-olefin can be the straight chain shape, also can be chain, and its carbon number is preferably 3～50, more preferably 3～20.As preferred alpha-olefin, can enumerate particularly propylene, 1-butylene, 1-amylene, 1-hexene, 4-methyl-1-pentene, 3-Methyl-1-pentene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecylene, 1-dodecylene, 1-tridecylene, tetradecene, 1-15 carbenes, cetene, 1-heptadecene, 1-vaccenic acid, 1-19 carbenes, 1-eicosylene etc.

Preparation method for the multipolymer of ethene and alpha-olefin does not have particular restriction.For example, except can preparing with the thermal response of catalyst-free, can also by using the catalyzer of regulation, ethene and alpha-olefin copolymer be obtained.As catalyzer, can enumerate the organic peroxide catalyst such as benzoyl peroxide; Knut Fridell-Kerafyrm thatch type the catalyzer such as aluminum chloride, aluminum chloride-polyalcohols, aluminum chloride-titanium tetrachloride class, aluminum chloride-alkyl tin halide class, boron fluoride; Organic chloride aluminium-titanium tetrachloride class, the organoaluminum-Ziegler-type catalysts such as titanium tetrachloride class; Organoaluminum-vanadium class the catalyzer such as oxygen base vanadium trichloride class; Aikyiaiurnirsoxan beta-zirconocene class or ionic compound-metallocene-type catalysts such as zirconocene class; The Lewis acid such as aluminum chloride-bases or boron fluoride-bases composite catalyst etc.

When the heat-treatment oil composition of the present embodiment contains the multipolymer of ethene and alpha-olefin, ethylene content in this multipolymer does not have particular restriction, consider from the viewpoint of the oxidation stability of the heat-treatment oil composition of final acquisition, hardenability, photoluminescent (bright property), ethene becomes the content of subdivision in the multipolymer, take the multipolymer total amount as benchmark, be preferably 40～80 quality %, more preferably 45～70 quality %, more preferably 50～60 quality %.

In addition, (A-1) hydride of composition is that two keys by said polyolefins are formed by hydrogenation.This hydride and hydrogenation phase ratio not, thermal oxidation stability is better.

Polyolefinic hydride can adopt arbitrarily that method obtains, for example by in the presence of known hydrogenation catalyst with hydrogen to the polyolefine hydrogenation, make saturated acquisition of two keys that exists in the polyolefine.In addition, by suitable selective polymerization catalyzer, also polyolefinic preparation and hydrogenation to two keys of existing in the polyolefine can be carried out in same section operation.Be explained, at present, use or lubricating oil additive usefulness as lubricant base, with the commercially available commodity of the trade(brand)name of ethylene-propylene copolymer, its pair key is by hydrogenation usually, and they can be preferably used as the cooling improving agent.

(A-1) molecular weight of polyolefine and/or its hydride does not have particular restriction, considers from decomposing the good viewpoint of stability, and its number-average molecular weight is preferably 1200～4000, and more preferably 1500～3000.Be explained, when number-average molecular weight less than 1200 the time, the hardenability of the heat-treated oil inadequate tendency that becomes, in addition, if number-average molecular weight surpasses 4000, the thermal oxidation stability of the heat-treatment oil composition inadequate tendency that becomes then.

As the pitch of (A-2) composition, can enumerate petroleum-type pitch or rock asphalt etc.

In addition, (A-2) the insoluble composition of composition is removed thing and is referred to, adopts solvent extraction process etc. to remove the product that in the above-mentioned pitch the low composition of the solvability of mineral oil is obtained.

Remove thing as (A-2) pitch and/or its insoluble composition, recording its penetration degree (25 ℃) according to 6.3 " the penetration test methods " of JIS K 2207 " petroleum pitch " is 0～300, recording its softening temperature according to 6.4 " softening point test methods " is 30～150 ℃, and density (15 ℃) is 1.0g/cm ³Above.

Be explained, above-mentioned (A-2) be not although the interpolation of composition can damage the performance of heat-treatment oil composition, and be painted owing to being attended by, and therefore, in the occasion of the heat-treated oil of wishing transparent type, do not wish to use (A-2) composition.

Salicylic alkali earth metal salt as (A-3) composition can use various salt, as preferred salt, can enumerate the salicylate compound by following general formula (52) expression.

[changing 52]

[in the formula, R ¹²³The alkyl of expression carbon number 8～20; N represents 1～4 integer; M represents calcium atom, barium atom or magnesium atom].

In the above-mentioned general formula (52), as by R ¹²³The alkyl of the carbon number 8～20 of expression can be enumerated the octyl group of straight or branched, the nonyl of straight or branched, the decyl of straight or branched, the undecyl of straight or branched, the dodecyl of straight or branched, the tridecyl of straight or branched, the tetradecyl of straight or branched, the pentadecyl of straight or branched, the hexadecyl of straight or branched, the heptadecyl of straight or branched, the octadecyl of straight or branched, the nonadecyl of straight or branched, the eicosyl of straight or branched etc. particularly.

In addition, the M in the above-mentioned general formula (52) represents calcium atom, barium atom or magnesium atom, in the present embodiment, preferably uses salicylic calcium salt or magnesium salts.

(A-3) base number of salicylic alkali earth metal salt (TBN) does not have particular restriction, and 500mgKOH/g is following, the salt of preferred 100～400mgKOH/g if use, and is effective to the raising of the photoluminescent (bright property) of workpiece then.

(A-3) salicylic alkali earth metal salt can use separately a kind, also arbitrary combination more than 2 kinds can be used.

In the present embodiment, in above-mentioned (A-1)～(A-3) composition, preferably will remove select thing and the alkyl salicylate alkali earth metal salt at least a kind from multipolymer, pitch and the insoluble composition thereof of the alpha-olefin of ethene and carbon number 3～20 and use as the cooling improving agent.

The content of cooling improving agent can at random be selected in the heat-treatment oil composition of the present embodiment, consider from the viewpoint of the raising effect of hardenability, take total composition as benchmark, be preferably more than the 0.01 quality %, more preferably more than the 0.05 quality %, more preferably more than the 0.1 quality %.In addition, from the effectively viewpoint consideration of the raising effect of acquisition and the corresponding hardenability of content, the content of cooling improving agent, take total composition as benchmark, be preferably below the 20 quality %, more preferably below the 10 quality %, more preferably below the 7.0 quality %.

The heat-treatment oil composition of the present embodiment can only contain above-mentioned lubricant base and cooling improving agent, but in order further to improve its performance, can contain as required following various additives.

As the additive beyond the cooling improving agent that uses in the present embodiment, for example can enumerate the photoluminescent modifying agents such as the lipid acid such as sulphur compound, oleic acid, cottonseed oil fatty acid, fatty acid ester, terpine resin such as sulfide-based, disulfides, multiple sulfides, thio-alcohol, thiophene-based; The antioxidants such as amine compound such as the phenolic compound such as 2,6 ditertiary butyl p cresol, pentanoic, phenyl-a-naphthylamine; Alkaline-earth metal sulfonate, alkaline-earth metal phenates, alkaline-earth metal salicylate, the tensio-active agent such as sorbitan ester, poly (oxyalkylene) based compound, alkenyl succinimide etc.The content of these additives can at random be selected, and take total composition as benchmark, the total content of the additive beyond the cooling improving agent is preferably 0.01～20 quality %.

Heat-treatment oil composition with the present embodiment of above-mentioned formation, can be used as the heat-treated oil of the metal works that can really obtain to have enough hardness and should tail off, can be preferably used as to the various steel alloys such as carbon steel, nickel-manganese steel, chrome-molybdenum steel, manganese steel quench, the heat-treated oil during thermal treatment such as annealing, tempering, when preferably quenching.Especially, the heat-treatment oil composition of the present embodiment, in the thermal treatments such as the gas cementation quenching of the precision mechanical part in all-round (carburizing, quenching) stove, continuous oven etc. or the parts of complicated shape, non-oxidation quenching, can give play to good performance.

(the 6th embodiment; The work mechanism lubricating oil composition) work mechanism of the 6th embodiment of the present invention contains the lubricant base of the invention described above and contains phosphorus and/or sulphur as the compound of Constitution Elements with lubricating oil composition.

Be explained, use in the lubricating oil composition at the work mechanism of the present embodiment, the form of lubricant base of the present invention is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, use in the lubricating oil composition at the work mechanism of the present embodiment, can use separately the lubricant base of the invention described above, in addition, also can also using more than a kind or 2 kinds lubricant base of the present invention and other base oils.Be explained, the concrete example of other base oils and lubricant base of the present invention shared ratio in mixed base oil, identical with the situation of above-mentioned the 1st embodiment, therefore, be not repeated.

In addition, the work mechanism of the present embodiment with contained phosphorus and/or the sulphur of containing in the lubricating oil composition as the compound of Constitution Elements, identical with the situation of above-mentioned the 3rd embodiment, therefore, be not repeated.

The work mechanism of the present embodiment can only contain lubricant base of the present invention and contain phosphorus and/or the sulphur compound as Constitution Elements with lubricating oil composition, but in order further to improve its characteristic, can also contain following additive.

The work mechanism lubricating oil composition of the present embodiment is considered from the viewpoint of sludge inhibition, can also contain the decentralized viscosity index improver.Decentralized viscosity index improver in the present embodiment, identical with decentralized viscosity index improver in above-mentioned the 3rd embodiment, therefore, be not repeated.

In addition, the work mechanism lubricating oil composition of the present embodiment, consider from the viewpoint that can further improve rubbing characteristics, preferably contain at least a kind that from compound shown in the explanation of above-mentioned the 3rd embodiment, by general formula (30)～(32) expression, selects, perhaps more preferably also contain the compound by general formula (33) expression.

In addition, the work mechanism lubricating oil composition of the present embodiment is considered from the viewpoint of sludge inhibition, can contain epoxy compounds.The concrete example of the epoxy compounds in the present embodiment and preference, identical with the situation of epoxy compounds in above-mentioned the 1st embodiment, therefore, be not repeated.

When the work mechanism of the present embodiment contained epoxy compounds with lubricating oil composition, its content did not have particular restriction, take total composition as benchmark, was preferably 0.1～5.0 quality %, more preferably 0.2～2.0 quality %.

In addition, the work mechanism lubricating oil composition of the present embodiment is considered from the viewpoint that can further improve oxidation stability, can contain phenol antioxidant, amine antioxidants or these two.Phenol antioxidant in the present embodiment and amine antioxidants, identical with phenol antioxidant and amine antioxidants in above-mentioned the 2nd embodiment, therefore, be not repeated.

In addition, the work mechanism lubricating oil composition of the present embodiment is considered from the viewpoint that improves rubbing characteristics, can contain oiliness improver.Oiliness improver in the present embodiment is identical with oiliness improver in above-mentioned the 3rd embodiment, therefore, is not repeated.

In addition, the work mechanism lubricating oil composition of the present embodiment is considered from the viewpoint that improves thermal oxidation stability, can contain at triazole and/or its derivative shown in the explanation of above-mentioned the 3rd embodiment, that have the structure that is represented by formula (45).

In addition, the work mechanism lubricating oil composition of the present embodiment, in order further to improve its performance, also can be as required, individually or several contain in combination viscosity index improver or the various additives take detergent-dispersant additive, pour point reducer, defoamer etc. as representative beyond rust-preventive agent, metal passivator, the above-mentioned decentralized viscosity index improver.These additives are identical with the situation of above-mentioned the 3rd embodiment, therefore, are not repeated.

Work mechanism lubricating oil composition with the present embodiment of above-mentioned formation, can realize well with high level and balance the over-all properties of rubbing characteristics, stick-slip reduction property and thermal oxidation stability, be very useful aspect the high performance of work mechanism.

The work mechanism lubricating oil composition of the present embodiment is particularly preferred for slide guide rail lubricated of work mechanism, in addition, also is preferred for various bearings, gear, hydraulic efficiency system etc. lubricated of work mechanism.

(the 7th embodiment; Lubricating oil composition) lubricating oil composition of the 7th embodiment of the present invention contains the lubricant base of the invention described above and contains phosphorus and/or sulphur as the compound of Constitution Elements.

Be explained, in the lubricating oil composition of the present embodiment, the form of lubricant base of the present invention is identical with the situation of above-mentioned the 1st embodiment, therefore, is not repeated.

In addition, in the lubricating oil composition of the present embodiment, can use separately the lubricant base of the invention described above, in addition, also can also using more than a kind or 2 kinds lubricant base of the present invention and other base oils.Be explained, the concrete example of other base oils and lubricant base of the present invention shared ratio in mixed base oil, identical with the situation of above-mentioned the 1st embodiment, therefore, be not repeated.

In addition, the lubricating oil composition of the present embodiment contain (A) not sulfur-bearing be antioxidant as the ashless of Constitution Elements.As this (A) composition, preferred not sulfur-bearing is antioxidant as phenols or the ashless of amine of Constitution Elements.

As sulfur-bearing not as the ashless antioxidant of the phenols of Constitution Elements, for example can enumerate particularly, 4,4 '-methylene-bis (2, the 6-DI-tert-butylphenol compounds), 4,4 '-two (2, the 6-DI-tert-butylphenol compounds), 4,4 '-two (2-methyl-6-tert-butylphenols), 2,2 '-methylene-bis(4-ethyl-6-t-butyl phenol), 2,2 '-methylene-bis (4-methyl-6-tert-butylphenol), 4,4,-butylidene-bis(3-methyl-6-t-butyl phenol), 4,4 '-isopropylidene two (2, the 6-DI-tert-butylphenol compounds), 2,2 '-methylene-bis(4-methyl-6-nonyl phenol), 2,2 '-isobutylidene two (4, the 6-xylenol), 2,2 '-methylene-bis(4-methyl-6-cyclohexyl phenol), 2, the 6-di-tert-butyl-4-methy phenol, 2,6-di-t-butyl-4-ethylphenol, 2,4-dimethyl-6-tert.-butyl phenol, 2, the amino p-cresol of 6-two-uncle-alpha, alpha-dimethyl, 2,6-di-t-butyl-4-(N, N ,-dimethylaminomethylphenol), 3-(3,5-di-t-butyl-4-hydroxyphenyl) n-octyl propionate, 3-(3,5-di-t-butyl-4-hydroxyphenyl) propionic acid tridecyl ester, four [3-(3,5-di-t-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, 3-(3,5-di-t-butyl-4-hydroxyphenyl) propionic acid stearyl, 3-(3,5-di-t-butyl-4-hydroxyphenyl) n-octyl propionate, 3-(the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) n-octyl propionate, and their mixture etc.Wherein, (3-(3 for the ester class antioxidant of the hydroxyphenyl replacement of the ester that the lipid acid that preferably replaces as hydroxyphenyl and the alcohol of carbon number 4～12 form, 5-di-t-butyl-4-hydroxyphenyl) n-octyl propionate, 3-(the 3-methyl-5-tertiary butyl-4-hydroxyphenyl) n-octyl propionate etc.) and bisphenols antioxidant, more preferably the ester class antioxidant of hydroxyphenyl replacement.In addition, molecular weight is the phenolic compound more than 240, and its decomposition temperature is high, even under the condition of high temperature more, also can give play to its effect, is preferred therefore.

In addition, as sulfur-bearing not as the ashless antioxidant of the amine of Constitution Elements, preferred amine antioxidants and phenol antioxidant, more preferably amine antioxidants.Be explained, the amine antioxidants in the present embodiment and phenol antioxidant, identical with amine antioxidants and phenol antioxidant in above-mentioned the 2nd embodiment, therefore, be not repeated.

Sulfur-bearing is not the content of antioxidant as the ashless of Constitution Elements, take total composition as benchmark, is 0.3～5 quality %, is preferably 0.3～3 quality %, more preferably 0.4～2 quality %.Be the content of antioxidant during less than 0.3 quality % when this is ashless, thermal oxidation stability and the sludge inhibition inadequate tendency that becomes.On the other hand, when surpassing 5 quality %, can not get the effect with the corresponding thermal oxidation stability of content and sludge inhibition, unfavorable economically, therefore not preferred.

The lubricating oil composition of the present embodiment can only contain above-mentioned lubricant base and ashless be antioxidant, consider from the viewpoint that can further improve thermal oxidation stability and sludge inhibition, preferably also contain the aromatic hydroxy compound that alkyl replaces.

In the present embodiment, the aromatic hydroxy compound as alkyl replaces preferably uses at least a kind that selects from alkylbenzene, alkylnaphthalene, alkyl biphenyl and alkyl diphenyl base paraffinic hydrocarbons.

The alkyl that has as alkylbenzene, for example can enumerate particularly methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl, tetracosyl, pentacosyl, ceryl, heptacosyl, octacosyl, nonacosyl, triacontyl, hentriacontyl, dotriacontyl, tritriacontyl, the tetratriacontane base, the pentatriacontane base, the hexatriacontane base, the heptatriacontane base, three octadecyls, the nonatriacontane base, the carbon numbers such as tetracontyl are 1～40 alkyl.Be explained, comprise separately whole isomer in these groups.Wherein, the preferred use has 1～4 (more preferably 1～2) alkyl of carbon number 8～30 and the total carbon number of these alkyl be 10～50 alkylbenzene of (more preferably 20～40).

The alkyl that alkylbenzene has can be the straight chain shape, also can be a chain, considers from viewpoints such as stability, viscosity characteristicses, preferred branched-chain alkyl, especially, consider from the viewpoint of availability, more preferably by the derivative branched-chain alkyl of the oligopolymer of the alkene such as propylene, butylene, iso-butylene.

The number of the alkyl in the alkylbenzene is preferably 1～4, considers from the viewpoint of stability, availability, most preferably uses the alkylbenzene with 1 or 2 alkyl, i.e. monoalkylated benzenes, dialkyl benzene or their mixture.

Above-mentioned alkylbenzene can use separately a kind, also can use with the mixture more than 2 kinds.When using the mixture of the alkylbenzene more than 2 kinds, the molecular-weight average of this mixture is preferably 200～500.

The preparation method of alkylbenzene can be arbitrarily, without any restriction, generally can prepare according to following synthesis method.As the aromatic hydroxy compound that consists of raw material, particularly can example as, benzene,toluene,xylene, ethylbenzene, methyl-ethyl benzene, diethylbenzene and their mixture etc.In addition, as alkylating agent, particularly can example such as, rudimentary monoolefines such as ethene, propylene, butylene, iso-butylene, the alkene of the straight or branched of the carbon number 6～40 that preferably obtains by propylene polymerization; The alkene of the straight or branched of the carbon number 6～40 that the thermo-cracking by wax, mink cell focus, petroleum fractions, polyethylene, polypropylene etc. obtains; From the petroleum fractionss such as kerosene, diesel oil, isolate normal paraffin, the straight chain shape alkene of the carbon number 6～40 that its alkene is obtained with catalyzer again; And their mixture etc.

In addition, the alkylation catalyst during as alkylation can use the Knut Fridell-Kerafyrm thatch type catalyzer such as aluminum chloride, zinc chloride; An acidic catalysts such as sulfuric acid, phosphoric acid, silicotungstic acid, hydrofluoric acid, atlapulgite; Etc. known catalyzer.

As alkylnaphthalene, the preferred compound that uses by following general formula (53) expression.[changing 53]

[in the formula (53), R ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～40; R ¹²⁴, R ¹²⁵, R ¹²⁶Perhaps R ¹²⁷In at least 1 be alkyl].

R in the general formula (53) ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷Represent separately hydrogen atom or alkyl, in this alkyl, except alkyl, also contain thiazolinyl, aryl, alkylaryl, arylalkyl etc., preferred R ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷It all is alkyl.

As alkyl, can enumerate the alkyl that in the explanation of abovementioned alkyl benzene, has as alkylbenzene and illustrative alkyl.Wherein, the alkyl of preferred carbon number 8～30, the more preferably alkyl of carbon number 10～20.

In addition, in the alkylnaphthalene of general formula (53) expression, R ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷Can be identical or different.That is, R ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷Can be all to contain alkyl, also can be R ¹²⁴, R ¹²⁵, R ¹²⁶Perhaps R ¹²⁷In at least 1 be alkyl, other are hydrogen atom.R ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷The total carbon number be preferably 8～50, more preferably 10～40.

Work as R ¹²⁴, R ¹²⁵, R ¹²⁶And R ¹²⁷In be alkyl more than 2 the time, as long as wherein at least 1 be alkyl, its combination just can be arbitrarily, but preferred all be alkyl.In addition, can be R ¹²⁴And R ¹²⁵For alkyl such, in same phenyl ring the structure of 2 alkyl of bonding, also can be R ¹²⁴And R ¹²⁶For alkyl such, in the different phenyl ring structure of 1 alkyl of each bonding respectively.

As the alkylnaphthalene of general formula (53) expression, can enumerate the decyl naphthalene particularly, the undecyl naphthalene, the dodecyl naphthalene, the tridecyl naphthalene, the tetradecyl naphthalene, the pentadecyl naphthalene, the hexadecyl naphthalene, the heptadecyl naphthalene, the octadecyl naphthalene, the nonadecyl naphthalene, the eicosyl naphthalene, two (decyl) naphthalene, two (undecyl) naphthalene, two (dodecyl) naphthalene, two (tridecyl) naphthalene, two (tetradecyl) naphthalene, two (pentadecyl) naphthalene, two (hexadecyl) naphthalene, two (heptadecyl) naphthalene, two (octadecyl) naphthalene, two (nonadecyl) naphthalene, two (eicosyl) naphthalene etc.Be explained, comprise separately whole isomer in these compounds.

Wherein, preferably have the alkylnaphthalene of the alkyl of 1～4 (more preferably 1～2) carbon number 8～30 (more preferably 10～20), more preferably, the total carbon number of the alkyl that alkylnaphthalene has is 8～50 (more preferably 10～40).

Above-mentioned alkylnaphthalene can use separately a kind, also can use with the mixture more than 2 kinds.When using the mixture of the alkylnaphthalene more than 2 kinds, the molecular-weight average of this mixture is preferably 200～500.

The preparation method of alkylnaphthalene can be arbitrarily, can adopt various known methods to prepare.As its example, for example can enumerate, the solid acid materials such as the mineral acids such as sulfuric acid, phosphoric acid, silicotungstic acid, hydrofluoric acid, acidic white earth, atlapulgite and aluminum chloride, zinc chloride etc. as the acid catalyst of friedel-crafts catalysts of metal halide etc. in the presence of, the halogenide of hydrocarbon, olefines, styrenic etc. are added to method on the naphthalene etc.

As alkyl biphenyl, the preferred compound that uses by following general formula (54) expression.[changing 54]

[in the formula (54), R ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹Can be identical or different, represent respectively the alkyl of hydrogen atom or carbon number 1～40; R ¹²⁸, R ¹²⁹, R ¹³⁰Perhaps R ¹³¹In at least 1 be alkyl].

As the R in the general formula (54) ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹The alkyl of expression except alkyl, can be enumerated thiazolinyl, aryl, alkaryl, aralkyl etc., preferred R ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹It all is alkyl.

As alkyl, can enumerate in the explanation of abovementioned alkyl benzene the illustrated alkyl of alkyl that has as alkylbenzene.Wherein, the alkyl of preferred carbon number 8～30, the more preferably alkyl of carbon number 10～20.

In addition, in the alkyl biphenyl by general formula (54) expression, R ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹Can be identical or different.That is, R ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹Can all be alkyl, perhaps also can be R ¹²⁸, R ¹²⁹, R ¹³⁰Perhaps R ¹³¹In at least 1 be alkyl, other are hydrogen atom or are the alkyl beyond the alkyl.R ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹The total carbon number be preferably 8～50, more preferably 10～40.

Work as R ¹²⁸, R ¹²⁹, R ¹³⁰And R ¹³¹In be alkyl more than 2 the time, as long as wherein at least 1 is alkyl, its combination just can be arbitrarily, can be R ¹²⁸And R ¹²⁹For alkyl such, on same phenyl ring the structure of 2 alkyl of bonding, also can be R ¹²⁸And R ¹³⁰For alkyl such, in the different phenyl ring structure of 1 alkyl of each bonding respectively.

Above-mentioned alkyl biphenyl can use separately a kind, also can use with the mixture more than 2 kinds.When using the mixture of the alkyl biphenyl more than 2 kinds, the molecular-weight average of this mixture is preferably 200～500.

The preparation method of alkyl biphenyl can be arbitrarily, can adopt various known methods to prepare.As its example, for example can enumerate, the solid acid materials such as the mineral acids such as sulfuric acid, phosphoric acid, silicotungstic acid, hydrofluoric acid, acidic white earth, atlapulgite and aluminum chloride, zinc chloride etc. as the acid catalyst of friedel-crafts catalysts of metal halide etc. in the presence of, the halogenide of hydrocarbon, olefines, styrenic etc. are added to method on the biphenyl etc.

As alkyl diphenyl base paraffinic hydrocarbons, the preferred compound that uses by following general formula (55) expression.

[changing 55]

[in the formula (55), R ¹³², R ¹³³, R ¹³⁴And R ¹³⁵Can be identical or different, represent separately the alkyl of hydrogen atom or carbon number 1～40; R ¹³⁰, R ¹³¹, R ¹³²Perhaps R ¹³³In at least 1 be alkyl; R ¹³⁶Alkylidene group or the alkenylene of expression carbon number 1～8].

As the R in the general formula (55) ¹³², R ¹³³, R ¹³⁴And R ¹³⁵The alkyl of expression except alkyl, can be enumerated thiazolinyl, aryl, alkaryl, aralkyl etc., preferred R ¹³², R ¹³³, R ¹³⁴And R ¹³⁵It all is alkyl.

As alkyl, can enumerate in the explanation of abovementioned alkyl benzene the illustrated alkyl of alkyl that has as alkylbenzene.Wherein, the alkyl of preferred carbon number 8～30, the more preferably alkyl of carbon number 10～20.

In addition, in the phenylbenzene paraffinic hydrocarbons by general formula (55) expression, R ¹³², R ¹³³, R ¹³⁴And R ¹³⁵Can be identical or different.That is, R ¹³², R ¹³³, R ¹³⁴And R ¹³⁵Can all be alkyl, perhaps also can be R ¹³², R ¹³³, R ¹³⁴Perhaps R ¹³⁵In at least 1 be alkyl, other are the alkyl beyond hydrogen atom or the alkyl.R ¹³², R ¹³³, R ¹³⁴And R ¹³⁵The total carbon number be preferably 8～50, more preferably 10～40.

Work as R ¹³², R ¹³³, R ¹³⁴And R ¹³⁵In when being alkyl more than 2, as long as wherein at least 1 is alkyl, its combination just can be arbitrarily, can be R ¹³²And R ¹³³For alkyl such, on same phenyl ring the structure of 2 alkyl of bonding, also can be R ¹³²And R ¹³⁴For alkyl such, in the different phenyl ring structure of 1 alkyl of each bonding respectively.

In addition, the R in the general formula (55) ¹³⁶Expression alkylidene group or alkenylene.

As R ¹³⁶, alkylidene group or the alkenylene of preferred carbon number 1～8, the more preferably alkylidene group of carbon number 1～6 and alkenylene.As particularly preferred group, can enumerate the carbon numbers such as methylene radical, methyl methylene radical (ethylidene), ethylidene, ethyl methylene radical (propylidene), dimethylated methylene base (isopropylidene), methyl ethylidene (propylidene), trimethylene and be 1～3 alkylidene group; The carbon numbers such as 1,1-vinylidene, vinylene, propenylene, methylene radical ethylidene, methyl vinylidene, 1-propenylidene, 2-propenylidene are 2～3 alkenylene; In the alkylidene group of carbon number 4～6,1-methyl trimethylene, 1-ethyl trimethylene, 1,1-dimethyl trimethylene, 1,2-dimethyl trimethylene, 1,3-dimethyl trimethylene, 1-ethyl-3-methyl trimethylene, 1-Ethyl-2-Methyl trimethylene, 1,1,2-trimethylammonium trimethylene, 1,1,3-trimethylammonium trimethylene; And in the alkenylene of carbon number 4～6,3-methyl propenylidene, 1-methyl-3-methylene tri methylene radical, 3-ethyl propenylidene, 1,3-dimethyl propenylidene, 2,3-dimethyl propenylidene, 3,3-dimethyl propenylidene, 1,1-dimethyl-3-methylene tri methylene radical, 1-ethyl-3-methylene tri methylene radical, 3-ethyl-1-methyl propenylidene, 3-Ethyl-2-Methyl propenylidene, 1,3,3-trimethylammonium propenylidene, 2,3,3-trimethylammonium propenylidene; Deng.

Above-mentioned phenylbenzene paraffinic hydrocarbons can use separately a kind, also can use with the mixture more than 2 kinds.When using the mixture of the phenylbenzene paraffinic hydrocarbons more than 2 kinds, the molecular-weight average of this mixture is preferably 200～500.

The preparation method of phenylbenzene paraffinic hydrocarbons can be arbitrarily, can adopt various known methods to prepare, and can enumerate following several examples.

For example, by in the presence of acid catalyst, with vinylbenzene, α-, the styrenics such as Beta-methyl vinylbenzene, ethyl styrene add on the alkylbenzene, can obtain the phenylbenzene paraffinic hydrocarbons.As acid catalyst, can use the solid acid materials such as the mineral acids such as sulfuric acid, phosphoric acid, acidic white earth, atlapulgite and as friedel-crafts catalysts of metal halide etc.

In addition, alkyl diphenyl base paraffinic hydrocarbons also can be in the presence of suitable acid catalyst, and the polyreaction by above-mentioned styrenic prepares.At this moment, can use single distyryl compound, also can use the distyryl compound more than 2 kinds to carry out copolymerization.As acid catalyst, can use the solid acid materials such as the mineral acids such as sulfuric acid, phosphoric acid, acidic white earth, atlapulgite and as friedel-crafts catalysts of metal halide etc.Usually, the hydrocarbon compound that adopts the method to obtain is 2 compounds that phenyl ring is bonded together by alkenylene, in the present embodiment, can directly use, and, also can be with making alkenylene be transformed into the compound that alkylidene group forms by the hydrotreatment of in the presence of suitable catalyzer, carrying out alkenylene.

In addition, about the alkylation of aromatic hydroxy compound, muriatic Knut Fridell-Kerafyrm thatch reaction is well-known, and the phenylbenzene paraffinic hydrocarbons also can adopt the method to prepare.For example, in the presence of the suitable friedel-crafts catalysts such as metal halide, by alkylbenzene and benzene or the alkylbenzene reaction that the side chain alkyl is chlorinated, can obtain the hydrocarbon compound of the present embodiment.In addition, also can enumerate in the presence of the suitable friedel-crafts catalysts such as metal halide, make dihalo paraffinic hydrocarbons and benzene or alkylbenzene carry out the method for coupling.

Alkyl diphenyl base paraffinic hydrocarbons can have by R by use ¹³²～R ¹³⁵The alkylbenzene of alkyl of expression adopts above-mentioned method etc. to prepare, also can be by the employing the whole bag of tricks with R ¹³²～R ¹³⁵The alkyl of expression adds on the phenylbenzene paraffinic hydrocarbons that adopts the preparations such as aforesaid method and prepares.

In the present embodiment, as the aromatic hydroxy compound with alkyl, can use separately a kind in above-mentioned alkylbenzene, alkylnaphthalene, alkyl biphenyl and the alkyl diphenyl base paraffinic hydrocarbons, also it can be used in combination more than 2 kinds.Wherein, consider from the viewpoint that the raising effect of sludge inhibition is better, particularly preferably alkylbenzene or alkylnaphthalene, most preferably alkylnaphthalene.

The viscosity of the aromatic hydroxy compound that replaces for the alkyl that uses in the present embodiment does not have particular determination, and its kinematic viscosity in the time of 40 ℃ is preferably 10～100mm ²/ s, more preferably 20～80mm ²/ s, more preferably 25～60mm ²/ s.

When the lubricating oil composition of the present embodiment contains the aromatic hydroxy compound of alkyl replacement, the content of the aromatic hydroxy compound that this alkyl replaces, consider from the viewpoint of thermal oxidation stability and sludge inhibition, take total composition as benchmark, be preferably more than the 2 quality %, more preferably more than the 5 quality %, more preferably more than the 10 quality %.In addition, consider the content of the aromatic hydroxy compound that alkyl replaces from the viewpoint of viscosity-temperature profile, take total composition as benchmark, be preferably below the 50 quality %, more preferably below the 30 quality %, more preferably below the 20 quality %, be particularly preferably below the 15 quality %.

In addition, the lubricating oil composition of the present embodiment in order further to improve its various performances, can also further contain known other lubricating oil additives, for example, and rust-preventive agent, anticorrosive agent, pour point reducer, defoamer etc.These additives can use separately a kind, also can will be used in combination more than 2 kinds.These additives in the present embodiment, identical with the situation of above-mentioned the 2nd embodiment, therefore, be not repeated.

Lubricating oil composition with the present embodiment of above-mentioned formation can be realized thermal oxidation stability and sludge inhibition well with high level and balance, is very useful as the lubricating oil composition of high-temperature use.Herein, about high-temperature use, there is not particular restriction for use temperature, when the oil temperature of the fuel tank that recycles continues can bring into play above-mentioned effect of the present invention more than 60 ℃ the time high-levelly, therefore be preferred, and then, when this temperature can have been given play to better effect in time more than 80 ℃, be preferred therefore, can give play to further good effect when this temperature in time more than 100 ℃, be particularly preferred therefore.As this high-temperature use, the burning of gas gas that can enumerate large capacity turbine, uses LNG or iron processed institute by-product is as the internal combustion turbine of working medium, various rotary gas compressor, the construction implement of at high temperature working etc., but the purposes of lubricating oil composition of the present invention is not limited to these purposes.

Embodiment

Below based on embodiment and comparative example, be described more specifically the present invention, but the present invention is not subjected to any restriction of following examples.

After [preparation of lubricant base] (base oil 1～3) will adopt the isolated cut of underpressure distillation to carry out solvent extraction with furfural in the refining step of solvent treatment base oil, carry out hydrotreatment, then, carry out solvent dewaxing with butanone-toluene Mixed Solvent.The wax composition (hereinafter referred to as " WAX1 ") that will be removed when this solvent dewaxing is as the raw material of lubricant base.The proterties of WAX1 is shown in table 1.

[table 1]

The title of paraffin	WAX1
		Kinematic viscosity (mm in the time of 100 ℃ 2/s)	6.6
Fusing point (℃)	60
		Oil-contg (quality %)	6.1
Sulphur content (quality ppm)	880

Secondly, in the presence of hydrocracking catalyst, at hydrogen dividing potential drop 5MPa, 340 ℃ of average reaction temperature, LHSV 0.8hr ^-1Condition under, WAX1 is carried out hydrocracking.As hydrocracking catalyst, will use with sulfided state at the amorphous catalyzer that is nickel-loaded and molybdenum form on the silica alumina carrier.

Secondly, carry out underpressure distillation by the split product that above-mentioned hydrocracking is obtained, obtain to be equivalent to the lubricating oil distillate of stock oil 20 volume %.For this lubricating oil distillate, use butanone-toluene Mixed Solvent, be that 2 times, filtration temperature carry out solvent dewaxing under-30 ℃ the condition in solvent/oil ratio, obtain the different 3 kinds of lubricant bases (hereinafter referred to as " base oil 1 ", " base oil 2 " and " base oil 3 ") of viscosity grade.

(base oil 4～6) is shaped to the cylindric of 1/16 inch of diameter (approximately 1.6mm), high 8mm with zeolite 700g and alumina adhesive 300g mixed milling (kneading).The formed body that obtains 480 ℃ of lower roastings 2 hours, is obtained carrier.Making by the platinum scaled value is that the aqueous solution of dichloro four ammino platinum (II) of amount of 1.0 quality % of carrier is impregnated in this carrier, make its 125 ℃ lower dry 2 hours, 380 ℃ of lower roastings 1 hour, obtain the purpose catalyzer.

Secondly, the catalyzer that obtains is filled in the fixed bed flow through reactors, uses this reactor, the stock oil that contains the paraffinic hydrocarbon is carried out hydrocracking/hydroisomerization.In this operation, the FT wax (hereinafter referred to as " WAX2 ") that as stock oil, to use paraffinicity be 95 quality %, have 20～80 carbon number distribution.The proterties of WAX2 is shown in table 2.In addition, the condition of hydrocracking is hydrogen pressure 3.5MPa, 340 ℃ of temperature of reaction, LHSV 1.5h ^-1, obtain the cracking that the cut (split product) of boiling point below 370 ℃ is the 25 quality % (cleavage rate 25%) of raw material/isomerization and generate oil.

[table 2]

The title of paraffin	WAX2
		Kinematic viscosity (mm in the time of 100 ℃ 2/s)	5.9
Fusing point (℃)	69
		Oil-contg (quality %)	＜1
Sulphur content (quality ppm)	＜0.2

Secondly, generate oily underpressure distillation by the cracking/isomerization that will obtain in above-mentioned hydrocracking/hydroisomerization operation, obtain lubricating oil distillate.To this lubricating oil distillate, use butanone-toluene Mixed Solvent, be that 3 times, filtration temperature carry out solvent dewaxing under-30 ℃ the condition in solvent/oil ratio, obtain 3 kinds of different lubricant bases of viscosity grade (hereinafter referred to as " base oil 4 ", " base oil 5 " and " base oil 6 ".)。

(base oil 7～9) carry out hydrotreatment after will adopting the isolated cut of underpressure distillation to carry out solvent extraction with furfural in the refining step of solvent treatment base oil, then, carry out solvent dewaxing with butanone-toluene Mixed Solvent.The soft wax (gatch) that will when this solvent dewaxing, be removed further de-oiling and the wax composition (hereinafter referred to as " WAX3 ") that obtains as the raw material of lubricant base.The proterties of WAX3 is shown in table 3.

[table 3]

The title of paraffin	WAX3
		Kinematic viscosity (mm in the time of 100 ℃ 2/s)	6.5
Fusing point (℃)	51
		Oil-contg (quality %)	19.5
Sulphur content (quality ppm)	2000

Secondly, in the presence of hydrocracking catalyst, at hydrogen dividing potential drop 5.5MPa, 340 ℃ of average reaction temperature, LHSV 0.8hr ^-1Condition under, WAX3 is carried out hydrocracking.As hydrocracking catalyst, with sulfided state use amorphous be the catalyzer that nickel-loaded and molybdenum form on the silica alumina carrier.

Secondly, carry out underpressure distillation by the split product that above-mentioned hydrocracking is obtained, obtain to be equivalent to the lubricating oil distillate of stock oil 20 volume %.To this lubricating oil distillate, use butanone-toluene Mixed Solvent, be that 2 times, filtration temperature carry out solvent dewaxing under-30 ℃ the condition in solvent/oil ratio, obtain the different 3 kinds of lubricant bases (hereinafter referred to as " base oil 7 ", " base oil 8 " and " base oil 9 ") of viscosity grade.

Various proterties and the benchmark test of base oil 1～9 the results are shown in table 4～6.

In addition, as the base oil that uses in the following comparative example, prepare base oil 10～17 (being the mineral oils base oil) and the following base oil 18～20 shown in table 7～9.The various proterties of base oil 10～17 shown in table 7～9 and benchmark test result.(base oil) base oil 18: the poly-alpha olefins (kinematic viscosity 40 ℃ time the: 9.5mm ²/ s) base oil 19: the poly-alpha olefins (kinematic viscosity 40 ℃ time the: 21.5mm ²/ s) base oil 20: the poly-alpha olefins (kinematic viscosity 40 ℃ time the: 45.5mm ²/ s).

[table 4]

[table 5]

[table 6]

[table 7]

[table 8]

[table 9]

[embodiment 1-1～1-9, comparative example 1-1～1-3; The Trimethylmethane refrigerator oil for refrigerant] in embodiment 1-1～1-9, use the base oil 7 shown in base oil 1, the base oil 4 shown in the table 5 or the table 6 shown in the table 4 and following additive, blending has the refrigerator oil that forms shown in table 10～11.In addition, in comparative example 1-1～1-3, use the base oil 10 shown in the table 7 or above-mentioned base oil 18 and following additive, blending has the refrigerator oil that forms shown in the table 11.(additive) additive 1-1: phosphate trimethylbenzene ester additive 1-2: phenylglycidyl ether.

Secondly, for the refrigerator oil of embodiment 1-1～1-9 and comparative example 1-1～1-3, the following benchmark test that carries out.

(lubricity test A) uses FALEX trier (ASTM D2670), from sampling receptacle bottom be blown into cooling agent (Trimethylmethane) on one side, carry out under the following conditions the FALEX test on one side.In this test, obtain pin and the average friction coefficient between the vee-block and abrasion loss as test film, estimate rubbing characteristics and the wear resistance of refrigerator oil.Average friction coefficient is by between at the trial, measures a frictional force every 1 second, and the frictional force that obtains is calculated divided by loading.In addition, abrasion loss is by the pin of measuring FALEX off-test front and back and the weight of piece, obtains as the reduction of weight.Acquired results is shown in table 10～11.On-test temperature: 25 ℃ of test periods: 30 minutes the load: 200lbf (1078N) the cooling agent amount of being blown into: 10L/h.

(soundness test A) adds refrigerator oil 80g and as iron wire, copper wire and the aluminium wire (being 1.6mm φ * 100mm wire) of catalyzer, seals in the autoclave of capacity 200ml.After this autoclave fully cooled off with the dry ice ethanolic soln, take out air in the autoclave with drawdown pump, then, fill Trimethylmethane cooling agent 10g.With this autoclave 225 ℃ of lower maintenances for 2 weeks, the variation of evaluate catalysts and whether sludge is arranged.Acquired results is shown in table 10～11.

[table 10]

[table 11]

[embodiment 1-10～1-18, comparative example 1-4～1-6; The propane refrigerant refrigerator oil] in embodiment 1-10～1-18, use the base oil 2,3,5,6,8 shown in table 4～6,9 and above-mentioned additive 1-1,1-2, blending has the refrigerator oil that forms shown in table 12～13.In addition, in comparative example 1-4～1-6, use the base oil 11 shown in the table 7,12 or above-mentioned base oil 19,20 and above-mentioned additive 1-1,1-2, blending has the refrigerator oil that forms shown in the table 13.

Secondly, for the refrigerator oil of embodiment 1-10～1-18 and comparative example 1-4～1-6, the following benchmark test that carries out.

(lubricity test B) except using propane refrigerant replacement Trimethylmethane cooling agent, all the other are identical with lubricity test A, carry out the FALEX test, obtain average friction coefficient and abrasion loss.Acquired results is shown in table 12～13.

(soundness test B) except using propane refrigerant to replace the Trimethylmethane cooling agent, all the other are identical with soundness test A, carry out soundness test, the variation of evaluate catalysts and whether sludge is arranged.Acquired results is shown in table 12～13.

[table 12]

[table 13]

[embodiment 1-19～1-27, comparative example 1-7～1-9; The carbon dioxide refrigerant refrigerator oil] in embodiment 1-19～1-27, use the base oil 3,6 shown in table 4～6,9 and above-mentioned additive 1-1,1-2, blending has the refrigerator oil that forms shown in table 14～15.In addition, in comparative example 1-7～1-9, use the base oil 12 shown in the table 7 or above-mentioned base oil 20 and above-mentioned additive 1,2, blending has the refrigerator oil that forms shown in the table 15.

Secondly, for the refrigerator oil of embodiment 1-19～1-27 and comparative example 1-7～1-9, the following benchmark test that carries out.

(lubricity test C) uses the high pressure frictional testing machines, estimates the oilness of each refrigerator oil.Employed trier, its sliding part is installed in the high pressure vessel, can carry out rub(bing)test under the carbon dioxide refrigerant atmosphere gas of high pressure.About test conditions, the pressure of carbon dioxide refrigerant is 5MPa, and test temperature is 120 ℃, loads to be that 2000N, sliding velocity are 1m/s.In addition, use the disk of the cylinder-like part of SUJ2 and SUJ2 as test film, average friction coefficient and abrasion loss when obtaining the end face that makes cylinder-like part and disk and sliding.In at the trial, measured a frictional force every 1 second, with the frictional force that obtains divided by loading to calculate average friction coefficient.In addition, about abrasion loss, determination test finishes the disk weight of front and back, obtains the reduction of weight.Acquired results is shown in table 14～15.

(soundness test C) except using carbon dioxide refrigerant to replace the Trimethylmethane cooling agent, all the other are identical with soundness test A, carry out soundness test, the variation of evaluate catalysts and whether sludge is arranged.Acquired results is shown in table 14～15.

[table 14]

[table 15]

[embodiment 1-28～1-36, comparative example 1-10～1-12; The HFC refrigerator oil for refrigerant] in embodiment 1-28～1-36, use the base oil 1,4 shown in table 4～6,7 and above-mentioned additive 1-1,1-2, blending has the refrigerator oil that forms shown in table 16～17.In addition, in comparative example 1-10～1-12, use the base oil 10 shown in the table 7 or above-mentioned base oil 18 and above-mentioned additive 1,2, blending has the refrigerator oil that forms shown in the table 17.

Secondly, for the refrigerator oil of embodiment 1-28～1-36 and comparative example 1-10～1-12, the following benchmark test that carries out.

(lubricity test D) except using HFC134a cooling agent replacement Trimethylmethane cooling agent, all the other are identical with lubricity test A, carry out the FALEX test, obtain average friction coefficient and abrasion loss.Acquired results is shown in table 16～17.

(soundness test D) except using HFC134a cooling agent to replace the Trimethylmethane cooling agent, all the other are identical with soundness test A, carry out soundness test, the variation of evaluate catalysts and whether sludge is arranged.Acquired results is shown in table 16～17.

[table 16]

[table 17]

[embodiment 2-1～2-7, comparative example 2-1～2-4; Compressor oil composition] blending of lubricant base) base oil 2 shown in the table 4 is mixed blending base oil 21 (base oil 2/ base oil 3=18/82 (mass ratio), the kinematic viscosity 40 ℃ time the: 31.5mm with base oil 3 ²/ s).In addition, the base oil 5 shown in the table 5 is mixed blending base oil 22 (base oil 5/ base oil 6=22/78 (mass ratio), the kinematic viscosity 40 ℃ time the: 32.5mm with base oil 6 ²/ s).

(blending of compressor oil composition) uses base oil 21 or base oil 22 and following additive in embodiment 2-1～2-4, blending has the compressor oil composition that forms shown in the table 18.In addition, in embodiment 2-5～2-7, use the base oil 9 shown in the table 6 and following additive, blending has the compressor oil composition that forms shown in the table 19.In addition, in comparative example 2-1～2-4, use the base oil 9 shown in the table 6, above-mentioned base oil 21 or the base oil 13 shown in the table 7 and following additive, blending has the compressor oil composition that forms shown in the table 20.(antioxidant) A2-1: dodecylphenyl-alpha-naphthylamine A2-2:N-octyl phenyl-N-butylaniline (antimist agent) B2-1: polymethacrylate (weight-average molecular weight: 80,000) (Phosphorus extreme pressure agent) C2-1: Tritolyl Phosphate.

[thermal oxidation stability test] measures the residual life-span of RBOT for the compressor oil composition of embodiment 2-1～2-7 and comparative example 2-1～2-4 according to JIS K 2514.Acquired results is shown in table 18～20.In the table, the value in residual life-span of RBOT is larger, mean that the thermal oxidation stability of this compressor oil composition is better, and the effect of antioxidant is better.

[oil spray test] carries out oil spray test for the compressor oil composition of embodiment 2-1～2-7 and comparative example 2-1～2-4 according to ASTM D 3705.

Fig. 1 is the summary pie graph that is illustrated in the oil spray test device that uses in this test.Oil spray test device 1 shown in Figure 1 has the formation that oil fog generator 11 and mist of oil box 12 link together via pipe arrangement L1.

The shape of oil fog generator 11 sides of pipe arrangement L1, as shown in the figure, take with the link position of oil fog generator 11 as starting point, extend upward, then crooked at prescribed position, to downward-extension.Near pipe arrangement L1 and link position oil fog generator 11, be provided for monitoring the pressure warning unit 13 of pressure of sending into the mist of oil of pipe arrangement L1 from oil fog generator 11.

Then, pipe arrangement L1 is at the prescribed position to the part of downward-extension, and bifurcated is for continuing downwards and branch obliquely, is connected on the trapping bottle 14 to the lower end of the pipe arrangement of downward-extension.In this trapping bottle 14, collect the part mist of oil of sending from oil fog generator 11.

In addition, bifurcated is pipe arrangement obliquely, is 2 branches at the further bifurcated of prescribed position, and each pipe arrangement of bifurcated penetrates into the upper wall of mist of oil box 12.Then, in the end of bifurcated pipe arrangement nozzle 15 is set, by this nozzle 15 mist of oil of sending from oil fog generator 11 is ejected into mist of oil box 12 inside.At this moment, the mist of oil of an ejection part liquefies, and accumulates in mist of oil box 12 inside, and another part becomes spuious mist of oil (stray mist).The spuious mist of oil that produces is discharged to the outside of mist of oil box 12 from the spuious mist of oil relief outlet 16 on the sidewall that is arranged at mist of oil box 12.

Use has the oil spray test device of above-mentioned formation, estimates the oil mist prevention of each compressor oil composition.Specifically, inject each compressor oil composition of specified amount in the oil fog generator 11, make its atomizing, measure the oil mass that accumulate the oil mass that captures in remaining oil mass in the oil fog generator 11, the trapping bottle 14 and mist of oil box 12 inside.Then, (A) obtains the mist of oil generation according to following formula, obtains spuious mist of oil rate according to following formula (B).Acquired results is shown in table 18～20.Be explained, in the table, the mist of oil generation is fewer, means for the consumption of the oil that atomizes fewer.In addition, spuious mist of oil rate is less, as compressor oil the time, means that the oil mass that is discharged into by in the ejection gas of strainer is fewer.(A) (spuious mist of oil rate [%])={ (mist of oil generation [g])-(the capture oil mass in the trapping bottle 14 after the test and the aggregate value [g] that accumulates in the oil mass of mist of oil box 12 inside) } * 100/ (mist of oil generation [g]) (B) for (mist of oil generation [g/h])={ (being injected into the oil mass [g] of oil fog generator 11)-(the remaining oil mass [g] in the oil fog generator 11 after the test) }/(test period [h])

[anti-sludge evaluation test] is for the compressor oil composition of embodiment 2-1～2-7 and comparative example 2-1～2-4, use (the motor output: 11kW, pressurized gas: air), in ejection pressure 0.8 ± 0.1MPa, fuel tank, carry out the real machine test of small test scale under the condition of 90 ℃ of temperature of rotary-type spiral-lobe compressor.Stopped compressor after 6000 hours on-tests, the opening point that carries out water-cooling cooler detects, and judges the degree of adhesion of sludge on finned tube according to following metewand.Acquired results is shown in table 18～20.1: sludge is attached on the whole finned tube, gap between the pipe is also stopped up 2 by sludge: sludge is attached on the whole finned tube, so that can not confirm the shape 3 of fin: sludge is attached on the whole finned tube, but can confirm the shape 4 of fin: sludge is attached on the finned tube partly, can confirm the matrix 5 of finned tube: confirm with test before compare almost and do not change.

[table 18]

[table 19]

[table 20]

[embodiment 3-1～3-15, comparative example 3-1～3-7; Hydraulic oil composition] in embodiment 3-1～3-15, use the base oil 3,6 shown in table 4～6,9 and following additive, blending has the hydraulic oil composition that forms shown in table 21～23.In addition, in comparative example 3-1～3-7, use the base oil 3,6,9 shown in table 4～8,12 and following additive, blending has the hydraulic oil composition that forms shown in table 24～25.(containing phosphorus and/or sulphur as the compound of Constitution Elements) A3-1: Tritolyl Phosphate A3-2: β-dithio phosphinylidyne ethyl propionate A3-3: triphenyl-thiophosphate A3-4: dioctyl zinc dithiophosphate (other additive) B3-1:2,6-ditertbutylparacresol B3-2: dioctyl diphenylamine.

Secondly, the hydraulic oil composition for embodiment 3-1～3-15 and comparative example 3-1～3-7 carries out following evaluation test.

[thermal oxidation stability test] is for the hydraulic oil composition of embodiment 3-1～3-15 and comparative example 3-1～3-7, " test of turbine oil oxidation permanence " according to regulation among the JIS K 2514 carries out thermal oxidation stability test, the time of the acid number of mensuration hydraulic oil composition during from on-test to rising 2.0mgKOH/g.Acquired results is shown in table 21～25.

[SRV (small to-and-fro movement friction) test] carries out the SRV test to the hydraulic oil composition of embodiment 3-1～3-15 and comparative example 3-1～3-7, estimates rubbing characteristics.More particularly, as shown in Figure 2, at the some contact area coated sample oil of disk 1 with configuration ball 202 thereon, on one side to ball 202 applying load (arrow A among the figure) vertically downward, Yi Bian make ball 202 along the relatively to-and-fro movement of surface direction (arrow B among the figure) of disk 201.Measure frictional coefficient at this moment with the load cell (not shown) that is installed on disk 1 retainer (not shown).As disk 201, use the disk of the SPCC material of diameter 25mm, thick 8mm, in addition, as ball 202, use the ball of the SPCC material of diameter 10mm.In addition, the load that is applied on the ball 202 is 1,200N, and the amplitude of ball 2 is that 1mm, frequency are 50Hz, and temperature is 80 ℃.Acquired results is shown in table 21～25.

[cut resistance test] carries out the vane pump test of regulation among the ASTM D 2882 for each lubricating oil composition of embodiment 3-1～3-15 and comparative example 3-1～3-7, and the blade before and after the experiment with measuring and the weight of annulus are measured abrasion loss.Test period is 100 hours.Acquired results is shown in table 21～25.

[table 21]

[table 22]

[table 23]

[table 24]

[table 25]

[embodiment 4-1～4-7, comparative example 4-1～4-4; Metalworking fluid composition] in embodiment 4-1～4-7, use respectively the base oil 1,6 shown in table 4～6,9 and following additive, blending has the Metalworking fluid composition that forms shown in the table 26.In addition, in comparative example 4-1～4-4, use respectively the base oil 12 shown in the table 7 or following base oil 23 and following additive, the Metalworking fluid composition shown in the blending table 27.In table 26～27, the kinematic viscosity of each Metalworking fluid composition in the time of 40 ℃ is shown in the lump.Be explained, the content of the additive shown in table 26～27 is the content take total composition as benchmark.(base oil) base oil 23: the paraffinic mineral oil (kinematic viscosity 40 ℃ time the: 49.7mm ²/ s, saturated composition: 91.5 quality %, the saturated composition of ring-type shared ratio in saturated composition: 49.8 quality %) (additive) additive 4-1: butyl stearate additive 4-2: lauryl alcohol additive 4-3: oleic acid additive 4-4: phosphate trimethylbenzene ester additive 4-5: sulfuration ester (inert type).

Secondly, the Metalworking fluid composition for embodiment 4-1～4-7 and comparative example 4-1～4-4 carries out following evaluation test.

[volume is pressed processing experiment] uses respectively the Metalworking fluid composition of embodiment 4-1～4-7 and comparative example 4-1～4-4, when the container that aluminium disks (JIS A 5182, diameter 100mm, thick 0.4mm) is shaped to the end of with, measure the maximum of needed drift when wrinkle resistant pressure is 1000kg and roll up pressure.Acquired results is shown in table 26～27.In table 26～27, maximum volume pressure is less, means that processibility is better.

[except oiliness test (1)] is on the one side of aluminium disks (JIS A 5182, diameter 100mm, thick 0.4mm), with each 3g/m of Metalworking fluid composition of atomizer coating embodiment 4-1～4-7 and comparative example 4-1～4-4 ², at room temperature left standstill 6 hours.Then, disk was flooded 1 minute in containing the grease-removing agent of nonionic surface active agent, and then, the disk that takes out was washed for 30 seconds in flowing water.After this washing, immediately disk is kept vertical along diametric(al), measure the water-wet area after 20 seconds, the 90% above person that the water-wet area reaches the coated face area is evaluated as A; Be evaluated as B less than 90%.Acquired results is shown in table 26～27.Be explained, water-wet area larger (namely estimating the sample of A), mean except oiliness better.

[table 26]

[table 27]

[embodiment 4-8～4-14, comparative example 4-5～4-8] uses respectively the base oil 2,4 shown in table 4～6,7 and following additive in embodiment 4-8～4-14, blending has the Metalworking fluid composition that forms shown in the table 28.In addition, in comparative example 4-5～4-8, use respectively the base oil 10 shown in the table 7 or following base oil 24 and following additive, the Metalworking fluid composition shown in the blending table 29.In table 28～29, the kinematic viscosity of each Metalworking fluid composition in the time of 40 ℃ is shown in the lump.Be explained, the content of the additive shown in table 28～29 is the content take total composition as benchmark.(base oil) base oil 24: the paraffinic mineral oil (kinematic viscosity 40 ℃ time the: 19.3mm ²/ s, saturated composition: 99.1 quality %, the saturated composition of ring-type shared ratio in saturated composition: 45.9 quality %) (additive) additive 4-1: butyl stearate additive 4-2: lauryl alcohol additive 4-4: phosphate trimethylbenzene ester additive 4-5: sulfuration ester (inert type).

Secondly, the Metalworking fluid composition for embodiment 4-8～4-14 and comparative example 4-5～4-8 carries out following evaluation test.

[rolling processing experiment] uses respectively the Metalworking fluid composition of embodiment 4-8～4-14 and comparative example 4-5～4-8, when stainless steel rolled material (SUS304, long 100mm, wide 50mm, thick 0.25mm) when being rolled, is measured needed rolling load when roll speed 250m/min, draft 35%.Acquired results is shown in table 28～29.In table 28～29, rolling load is less, means that processibility is better.

[except oiliness test (2)] is on the one side of stainless steel rolled material (SUS304, long 100mm, wide 50mm, thick 0.25mm), with each 3g/m of Metalworking fluid composition of atomizer coating embodiment 8～14 and comparative example 5～8 ², at room temperature left standstill 6 hours.Then, rolled material was flooded for 5 seconds in normal hexane, again that the rolled material of taking out is dry.Then, rolled material was heated to 450 ℃ with 3 hours from room temperature, under uniform temp, keeps spending 2 hours and being cooled to room temperature (hot degreasing) after 1 hour.Measure the area of the variable color part on rolled material surface after this hot degreasing, the 95% above person that the variable color area reaches the coated face area is evaluated as A, is evaluated as B less than 95%.Acquired results is shown in table 28～29.Be explained, variable color area larger (namely being evaluated as A), mean except oiliness better.

[table 28]

[table 29]

[embodiment 4-15～4-24, comparative example 4-9～4-11] is in embodiment 4-15～4～24, use respectively the base oil 3,4 shown in table 4～6,7 and following additive, blending has the Metalworking fluid composition (machining oil composition) that forms shown in table 30～31.In addition, in comparative example 4-9～4-11, use respectively the base oil 10 shown in the table 7 and following additive, the Metalworking fluid composition shown in the blending table 31.In table 30～31, the kinematic viscosity of each Metalworking fluid composition in the time of 40 ℃ is shown in the lump.Be explained, in the composition hurdle of table 30～31, base oil 3,4,7,9 and each content of additive 4-6～4-13 be content take total composition as benchmark.(additive) additive 4-6: active sulfuration ester (sulphur content: 17.5 quality %) additive 4-7: two uncle's dodecyl polysulfides (sulphur content: 32 quality %) additive 4-8: phosphorodithioic acid zn cpds (sulphur content: 20 quality %, zinc content: 10 quality %, phosphorus content: 9 quality %) additive 4-9: overbased calcium sulfonate (base number: 400mgKOH/g) additive 4-10: the ethylene-propylene copolymer (kinematic viscosity 100 ℃ time the: 1200mm ²/ s) additive 4-11: phosphate trimethylbenzene ester additive 4-12: high oleic acid vegetables oil (iodine number: 95, oleic acid shared ratio in consisting of carboxylic acid: 65 quality %) additive 4-13: n-dodecane alcohol.

Secondly, the Metalworking fluid composition for embodiment 4-15～4-24 and comparative example 4-9～4-11 carries out following evaluation test.

[tapping (tapping) test] uses each Metalworking fluid composition of embodiment 4-15～4-24 and comparative example 4-9～4-11, adopts common oil supply mode to carry out the tapping test.Specifically, be used alternatingly each Metalworking fluid composition and standard of comparison oil (DIDA: diisodecyl adipate), under following condition, carry out the tapping test, measure the tapping energy of each occasion.Tapping condition instrument: nut tap (nut tap) M8 (P=1.25mm) prebored hole aperture: the condition that φ 7.2mm workpiece (work): AC8A (t=10mm) cutting speed: 9.0m/ divides the oil feed mode that Metalworking fluid composition and DIDA are divided with about 6mL/ is directly supplied with working position and is processed.

Secondly, use the measured value of the tapping energy that obtains, calculate tapping energy efficiency (%) according to following formula.Acquired results is shown in table 28～29.In the table, the value of tapping energy efficiency is higher, means that oilness is higher.Tapping energy efficiency (%)=(the tapping energy when using DIDA)/(the tapping energy when using oil agent composition)

[test of the oil amount of taking away] (60mm * 80mm) dipping kept 1 minute in each Metalworking fluid composition of embodiment 4-9～4-15 and comparative example 4-9～4-11 with the SPCC steel plate.Then, the SPCC steel plate is taken out, vertical hanging 5 minutes gets rid of oil, measures the adhesion amount (the oil amount of taking away) of Metalworking fluid composition.Acquired results is shown in table 30～31.

[table 30]

[table 31]

[embodiment 5-1～5-11, comparative example 5-1～5-10: heat-treatment oil composition] is in embodiment 5-1～5-6, use the base oil 1,2,3 shown in table 4～5,5 and following cooling improving agent A5-1, A5-2, A5-3, blending has the heat-treatment oil composition that forms shown in the table 32.In addition, in embodiment 5-7～5-11, use the base oil 7～9 shown in the table 6 and following cooling improving agent A5-1, A5-2, A5-3, blending has the heat-treatment oil composition that forms shown in the table 33.In addition, in comparative example 5-1～5-10, use the base oil 1～3,5,7～9,12,16 shown in table 4～7,9,17 and following cooling improving agent A5-1, A5-2, A5-3, blending has the heat-treatment oil composition that forms shown in table 34～35.In table 32～35, the kinematic viscosity of each heat-treatment oil composition in the time of 40 ℃ is shown in the lump.(cooling improving agent) A5-1: (trade(brand)name: Le one カ Application ト HC600, Mitsui petroleum chemistry society system, number-average molecular weight: 2600) A5-2: the insoluble composition of pitch is removed thing (trade(brand)name: NC505, Pennzoil company system) A5-3 to ethylene-propylene copolymer: calcium salicylate (trade(brand)name: SAP002, shell chemical company system).

Secondly, the heat-treatment oil composition for embodiment 5-1～5-11 and comparative example 5-1～5-10 carries out following evaluation test.

[quenching test 1] with the cylindric steel (S45C) of the diameter 24mm of bottom surface, high 10mm at hydrogen/nitrogen mixture gas (hydrogen/nitrogen ratio: 3/97),, put in the heat-treatment oil composition that is heated to 80 ℃ and quench after 45 minutes 850 ℃ of lower heating.After the quenching, on the diameter of steel bottom surface, 7 place's measuring points of interval 3mm, use Rockwell hardometer to measure hardness, obtain their mean value.Acquired results is shown in table 32～35.

[quenching test 2] prepares the cylindric steel (SUJ2) of 24 sections bottom surface diameter 8mm, high 90mm, and these steel are used batch furnace, simultaneously 24 sections steel quenched.Be explained, the heating condition of steel is 830 ℃, 60 minutes, and the oil temperature during quenching is 80 ℃.After the quenching, use dial indicator (dial gauge), measure " bending " of each steel, obtain 24 sections mean value.Acquired results is shown in table 32～35.Be explained, " bending " refer to, steel placed on the V-arrangement block, and the top of dial indicator is touched longitudinally centre of steel, makes steel slowly rotation on the V-arrangement block, reads the at this moment maximum displacement value of steel, measures " bending " of steel with this.

[table 32]

[table 33]

[table 34]

[table 35]

[embodiment 6-1～6-21, comparative example 6-1～6-8] uses the base oil 3,6 shown in table 4～6,9 and following additive in embodiment 6-1～6-21, blending has the work mechanism lubricating oil composition that forms shown in table 36～38.In addition, in comparative example 6-1～6-8, use the base oil 3,6,9,12,14 shown in table 4～8,15 and following additive, blending has the work mechanism lubricating oil composition that forms shown in table 39～40.(containing phosphorus and/or sulphur as the compound of Constitution Elements) A6-1: acid phosphoric acid oil base ester A6-2: the oleyl amine salt A6-3 of acid phosphoric acid oil base ester: Tritolyl Phosphate A6-4: sulfuration ester (sulphur content: 11.4 quality %) A6-5: sulfuration lard (sulphur content: 11.0 quality %) (other additives) B6-1: oleic acid B6-2:2,6-ditertbutylparacresol.

Secondly, the work mechanism lubricating oil composition for embodiment 6-1～6-21 and comparative example 6-1～6-8 carries out following evaluation test.

[thermal oxidation stability test] estimates the sludge formation inhibition of each lubricating oil composition according to JIS K 2540-1989 " the hot permanence test method of lubricating oil ".That is, in the 50ml beaker, take by weighing lubricating oil composition 45g, to wherein adding copper catalyst and iron catalyst, in 140 ℃ air thermostatic bath, place after 72 hours, measure the sludge amount of lubricating oil composition.The sludge amount that generates is obtained by following method, that is, the lubricating oil composition after the test is diluted with normal hexane, with the membrane filter filtration of 0.8 μ m, then measures the weight that captures thing.As copper catalyst and iron catalyst, use a kind of catalyzer by will use in turbine oil oxidation permanence test (JIS K 2514) to cut into the catalyzer that 8 sections (volume) (length is 3.5cm approximately) form.Acquired results is shown in table 36～40.

[rubbing characteristics evaluation test] Fig. 3 is the summary pie graph that is illustrated in the measuring friction coefficient system that uses in the rubbing characteristics evaluation test.Among Fig. 3, configure operator's console 301 and the movable anchor clamps 304 that link together via load cell 305 at base 306, and then at the ballast 309 of operator's console 301 configurations as the machining tool surrogate.Operator's console 301 and base 306 are made by cast iron.In addition, movable anchor clamps 304 have bearing portion, and this bearing portion is connected on the A/C servosystem 302 via feed screw 303.Make feed screw 303 produce motion by A/C servomotor 302, can make thus movable anchor clamps 304 in axial (direction of arrow among the figure) of feed screw 303 upper to-and-fro movement.And then, load cell 305 is electrically connected with computer 307, computer 307 and A/C servomotor 302 are electrically connected with switchboard 308 respectively, can carry out thus the reciprocating control of movable anchor clamps 304 and the mensuration of the load between operator's console 301 and the movable anchor clamps 304.

In this measuring friction coefficient system, lubricating oil composition drips above base 306, by selection operation platform ballast 309, face between operator's console 301 and the base 306 pressure is adjusted to 200kPa, then, under the condition of speed of feed 1.2mm/min, feeding length 15mm, movable anchor clamps 304 are moved back and forth.Measure the operator's console 301 of this moment and the load between the movable anchor clamps 304 with load cell 305 (load gauge), according to the measured value that obtains, obtain the frictional coefficient of guide surface (operator's console 301/ base 306=cast iron/cast iron).Be explained, above-mentioned test is carried out after 3 coastings carrying out.The frictional coefficient of each lubricating oil composition is shown in table 36～40.

(evaluation test of stick-slip reduction property) Fig. 4 is for illustrating stick-slip reduction property evaluating apparatus (PLINT ﹠amp; PARTNERS company TE-77 trier processed) summary pie graph.About device shown in Figure 4, supporting on the platform 410 in order stacked downside test film 402, upside test film 401, elastomerics 400, load according to the rules, utilize elastomerics 400 that test film 401,402 is compressed mutually on one side, make elastomerics 400 to-and-fro movements (sliding motion) along the face of supporting platform 410 on one side, test film 401,402 is slided.Then, when carrying out this slip, measure the load that is applied on the test film 401,402 with load detector 403, obtain thus test film 401,402 frictional coefficient.Fig. 5 is the graphic representation that is illustrated in an example of the frictional coefficient that obtains in the aforesaid operations and the mutual relationship of time.Δ μ among the figure represents the amplitude of frictional coefficient.

Use this device, test film and condition improvement are estimated with lubricating oil for slide guide rail, in addition, according to the method shown in the document (the pre-original text collection of tribology association tribology meeting Tokyo 1999-5 D17), measure the Δ μ when making each lubricating oil composition be between the test film 401,402.Specifically, test film 401,402 all uses JIS G 4051S45C, and elastomerics 400 uses chloroprene rubber, tests under the condition of slip speed 0.3mm/s, load 250N.When Δ μ is evaluated as " without stick-slip " less than 0.02 the time, when amplitude Δ μ 0.02 is evaluated as " stick-slip is arranged " when above, so estimates stick-slip and reduce property.Acquired results is shown in table 36～40.

[table 36]

[table 37]

[table 38]

[table 39]

[table 40]

[embodiment 7-1～7-18, comparative example 7-1～7-4; Lubricating oil composition] (blending of lubricant base) mix the base oil 2 shown in the table 4 with base oil 3, blending base oil 25 (base oil 2/ base oil 3=10/90 (mass ratio), the kinematic viscosity 40 ℃ time the: 32mm ²/ s).

In addition, the base oil 5 shown in the table 5 is mixed blending base oil 26 (base oil 5/ base oil 6=12/88 (mass ratio), the kinematic viscosity 40 ℃ time the: 32.1mm with base oil 6 ²/ s).

In addition, the base oil 11 shown in the table 7 is mixed blending base oil 27 (base oil 11/ base oil 12=20/80 (mass ratio), the kinematic viscosity 40 ℃ time the: 32mm with base oil 12 ²/ s).

And then, as being used for lubricant base relatively, prepare base oil 28 (poly-alpha olefins, the kinematic viscosity 40 ℃ time the: 32.0mm ²/ s).

(blending of lubricating oil composition) uses above-mentioned base oil 25 or base oil 26 and following additive in embodiment 7-1～7-10, blending has the lubricating oil composition that forms shown in table 41～42.In addition, in embodiment 7-11～7-18, use the base oil 9 shown in the table 6 and following additive, blending has the lubricating oil composition that forms shown in table 43～44.In addition, in comparative example 7-1～7-4, use above-mentioned base oil 27 or base oil 28 and following additive, blending has the lubricating oil composition that forms shown in the table 45.(antioxidant) A7-1:(3,5-di-t-butyl-4-hydroxyphenyl) propionic ester A7-2: dodecylphenyl-alpha-naphthylamine A7-3:N-octyl phenyl-n-butyl aniline (aromatic hydroxy compound that alkyl replaces) B7-1: the alkylnaphthalene that has 1～2 carbon number and be 16 or 18 alkyl.

[evaluating characteristics test (1)] carried out the turbine oil oxidation permanence test (TOST) of regulation among the JIS K 2514 and the evaluating characteristics test of rotor pump formula oxidation permanence test (RBOT) and usefulness for the lubricating oil composition of embodiment 7-1～7-18 and comparative example 7-1～7-4.Specifically, in the TOST test, make each lubricating oil composition under 120 ℃, carry out the oxidative degradation of specified time, measure sludge formation amount and RBOT value at this moment.Then, arrive time (arriving the time in residual life-span 25%) of 25% of RBOT value before the test and the sludge formation amount of this moment, thermal oxidation stability and the sludge inhibition of evaluation lubricating oil composition based on the RBOT value of deteriorated oil.The time in the RBOT value before the test of each lubricating oil composition, residual life-span 25% of arrival and the sludge formation amount (growing amount of every 100ml sample oil) when arriving residual life-span 25% are shown in table 41～45.

[evaluating characteristics test (2)] is for the lubricating oil composition of embodiment 7-1～7-18 and comparative example 7-1～7-4, following such sludge inhibition of estimating.Fig. 6 is the figure that the summary formation of the high-temperature pump round-robin test equipment that uses in this test is shown.Among Fig. 6, in circulation stream L2, set gradually fuel tank 601, piston pump 602, reducing valve 603, pipeline filter 604, under meter 605, water cooler 606, lubricating oil composition in the fuel tank 601 is drawn out among the circulation stream L2 by piston pump 602, by circulation stream L2, again return fuel tank 601.

In this test, utilize high-temperature pump round-robin test equipment shown in Figure 6, use piston pump 602, each lubricating oil composition is circulated under 7MPa, 120 ℃ of conditions, the differential pressure before and after the monitoring pipeline filter 604 (3 μ m) rises.Differential pressure when not having sludge is about 35kPa, in case trap sludge, differential pressure will climbed.Runtime when so the mensuration differential pressure reaches 100kPa is with this yardstick as the sludge formation preventive.Acquired results is shown in table 41～45.Be explained, the numerical value of this runtime is larger, and expression sludge formation inhibition is better.Be explained, "＞1000 " in the table are even mean and reach 1000 hours runtime, and differential pressure can not arrive 100kPa yet.

[table 41]

[table 42]

[table 43]

[table 44]

[table 45]

Claims (12)

1. refrigerator oil is characterized in that, contains %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is the following lubricant bases of 100 quality ppm,

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

2. compressor oil composition is characterized in that, contains:

%C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is the following lubricant bases of 100 quality ppm,

Antioxidant, and

Antimist agent,

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

3. compressor oil composition claimed in claim 2 is characterized in that, the content of above-mentioned antioxidant take total composition as benchmark, is 0.02～5 quality %.

4. hydraulic oil composition is characterized in that, contains:

%C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is the following lubricant bases of 100 quality ppm, and

Contain phosphorus and/or sulphur as the compound of Constitution Elements;

Describedly contain phosphorus is selected from phosphoric acid ester, phosphate ester acid, phosphate ester acid as the compound of Constitution Elements amine salt, chloro phosphoric acid ester, phosphorous acid ester, thiophosphatephosphorothioate and phosphorus-containing carboxylic acid compound,

The described sulphur that contains is selected from sulfuration grease, sulfide aliphatic acid, sulfuration ester, olefine sulfide, dialkyl (many) sulfide, thiadiazole compound, alkylthio carbamoyl compounds, Thiourethane compound, sulfo-terpene compound, dialkyl group thio-2 acid ester cpds, sulfurized mineral oil, zinc dithiocarbamate compound, molybdenum dithiocarbamate, phosphorodithioic acid zn cpds and phosphorodithioic acid molybdenum compound as the compound of Constitution Elements

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

5. Metalworking fluid composition is characterized in that, contains %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is the following lubricant bases of 100 quality ppm, and

From ester, alcohol, carboxylic acid and contain phosphorus and/or the compound of sulphur as Constitution Elements at least a kind of lubricity improver selecting,

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

6. heat-treatment oil composition is characterized in that, contains %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is following lubricant base and cooling improving agents of 100 quality ppm,

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

7. heat-treatment oil composition claimed in claim 6, it is characterized in that, above-mentioned cooling improving agent is at least a kind of selecting the alkali earth metal salt of removing thing and alkyl salicylate from multipolymer, pitch and the insoluble composition thereof of the alpha-olefin of ethene and carbon number 3～20.

8. the work mechanism lubricating oil composition is characterized in that, contains:

%C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is the following lubricant bases of 100 quality ppm, and

Contain phosphorus and/or sulphur as the compound of Constitution Elements,

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

9. lubricating oil composition is characterized in that, contains %C _ABe below 2, %C _P/ %C _NBe more than 6, iodine number is below 2.5, sulphur content is the following lubricant bases of 100 quality ppm, and sulfur-bearing is not antioxidant as the ashless of Constitution Elements;

Above-mentioned ashless be the content of antioxidant, take total composition as benchmark, be 0.3～5 quality %,

Described %C _AAnd %C _P/ %C _NTo obtain according to the method for ASTM D 3238-85.

10. lubricating oil composition claimed in claim 9 is characterized in that, also contains the aromatic hydroxy compound that alkyl replaces.

11. lubricating oil composition claimed in claim 10, it is characterized in that, aromatic hydroxy compound as abovementioned alkyl replaces is at least a kind that is selected from alkylbenzene, alkylnaphthalene, alkyl biphenyl and the alkyl diphenyl base paraffinic hydrocarbons, and is the compound with alkyl of 1 or 2 carbon number 8～30.

12. each described lubricating oil composition of claim 9～11 is characterized in that,

Contain phenyl-a-naphthylamine compound and alkylated diphenylamine compound the two as above-mentioned ashless be antioxidant, and,

The alkylated diphenylamine compound is shared ratio in the total amount of phenyl-a-naphthylamine compound and alkylated diphenylamine compound, and meter is 0.1～0.9 in mass ratio.

Images