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CN109181825A - A kind of long-life clean type gear of vehicle special oil and preparation method thereof - Google Patents

A kind of long-life clean type gear of vehicle special oil and preparation method thereof Download PDF

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Publication number
CN109181825A
CN109181825A CN201810978037.XA CN201810978037A CN109181825A CN 109181825 A CN109181825 A CN 109181825A CN 201810978037 A CN201810978037 A CN 201810978037A CN 109181825 A CN109181825 A CN 109181825A
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base oil
additive
long
type gear
butyl
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CN201810978037.XA
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CN109181825B (en
Inventor
孙风成
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YANTAI HENGBANG CHEMICAL CO Ltd
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YANTAI HENGBANG CHEMICAL CO Ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/06—Well-defined aromatic compounds
    • C10M2203/065—Well-defined aromatic compounds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/041—Triaryl phosphates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The present invention provides a kind of long-life clean type gear of vehicle special oils, including following components in percentage by weight: base oil and additive, oily 5.631%~18.308% based on the additional amount of additive, the base oil includes at least three kinds of components: hydroisomerizing base oil 55%~88%, alkylnaphthalene 10%~30%, polyalphaolefin 2%~15%, the additive includes at least ten kinds of components: pungent/butyl liquid diphenylmethane amine 0.3%~1.5%, methacrylate pour-point depressant 0.1%-1%, 2, 6- is to di-tert-butyl p-cresol 0.2%~1%, benzotriazole fatty amine salt 0.03%~1%, dialkyl dithio molybdenum trisulfate 0.5%~4%, tricresyl phosphate 0.2~2%, composite anti-foam agent 0.001~0.008%, gold Belong to passivator 0.1%~1%, aliphatic ester 1%~4%, sulfide isobutene 2%-4%.The present invention is not due to adding viscosity index improver, with excellent anti-shear performance, bright stock 150BS is substituted using the good alkylnaphthalene of detergency simultaneously, substantially reduce product greasy filth tendency, the detergency of product is very excellent, it is equipped with excellent high/low temperature antioxidant, greatly improves inoxidizability, substantially prolongs the service life of product.

Description

A kind of long-life clean type gear of vehicle special oil and preparation method thereof
Technical field
The invention belongs to chemical technology field, relate in particular to a kind of long-life clean type gear of vehicle special oil and its Preparation method.
Background technique
Automotive gear oil is mainly used for the lubrication of vehicle drive axle, and current most of automotive gear oil uses Viscosity Index Modifier adjusts viscosity, so clearly, the decline of viscosity makes oil product applicable performance for the decline of viscosity in use Decline.The use of big viscosity bright stock simultaneously, keeps the inoxidizability of product and spatter property very poor, disadvantage mentioned above makes automobile-used tooth The service life of wheel oil substantially reduces.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of long-life clean type gear of vehicle special oil and its preparation sides Method.
The technical scheme of the present invention is realized as follows: a kind of long-life clean type gear of vehicle special oil, including it is following The component of weight percent: base oil and additive, it is described oily 5.631%~18.308% based on the additional amount of additive Base oil is including at least three kinds of components: hydroisomerizing base oil 55%~88%, alkylnaphthalene 10%~30%, polyalphaolefin 2%~15%, The additive includes at least ten kinds of components: pungent/butyl liquid diphenylmethane amine 0.3%~1.5%, methacrylate pour-point depressant 0.1%-1%, 2,6- to di-tert-butyl p-cresol 0.2%~1%, benzotriazole fatty amine salt 0.03%~1%, dialkyl disulfides thiosulfuric acid Molybdenum 0.5%~4%, tricresyl phosphate 0.2~2%, composite anti-foam agent 0.001~0.008%, metal deactivator 0.1%~1%, rouge Fat acid esters 1%~4%, sulfide isobutene 2%-4%；
Preferably, including following components in percentage by weight: base oil and additive, it is oily based on the additional amount of additive 7.653%, the base oil includes at least three kinds of components: hydroisomerizing base oil 69%, alkylnaphthalene 25%, polyalphaolefin 6% are described Additive includes at least ten kinds of components: pungent/butyl liquid diphenylmethane amine 0.5%, methacrylate pour-point depressant 0.3%, 2,6- to two Butylated Hydroxytoluene 0.5%, benzotriazole fatty amine salt 0.05%, dialkyl dithio molybdenum trisulfate 1%, tricresyl phosphate 0.8% are multiple Close anti-foaming agent 0.003%, metal deactivator 0.3%, aliphatic ester 1.2%, sulfide isobutene 3%；
Preferably, the hydroisomerizing base oil is 500N；
Preferably, the alkylnaphthalene is AN30；
Preferably, the polyalphaolefin is PAO600；
The method for making long-life clean type gear of vehicle special oil, comprising the following steps:
(1), hydroisomerizing base oil, alkylnaphthalene are put into reaction kettle, polyalphaolefin is warming up to 60~70 DEG C, stirring 10~30 Minute；
(2), pungent/butyl liquid diphenylmethane amine, polymethacrylates pour-point depressant, 2,6- then are sequentially added to di-t-butyl to first Phenol, benzotriazole fatty amine salt, dialkyl dithio molybdenum trisulfate, tricresyl phosphate, metal deactivator, aliphatic ester, vulcanization are different Butylene, composite anti-foam agent, stir 30-60 minutes by 60 DEG C~70 DEG C of constant temperature, and reconciling becomes after completing through 25 Mm filter systems Finished product.
500N: index: V40=90mm2/ s, VI=110, flash-point: 268 DEG C, pour point=- 30；
Alkylnaphthalene AN30: index: V40=301mm2/ s, VI=135, flash-point: 300, pour point=- 30.
The beneficial effects of the present invention are: the present invention is due to not plus viscosity index improver, having excellent anti-shear performance, Bright stock 150BS is substituted using the good alkylnaphthalene of detergency simultaneously, substantially reduces product greasy filth tendency, the detergency of product It is very excellent, it is equipped with excellent high/low temperature antioxidant, greatly improves inoxidizability, substantially prolong product uses the longevity Life.
Specific embodiment
For a better understanding and implementation, the following detailed description of a kind of long-life clean type gear of vehicle special oil and its system Preparation Method:
Embodiment: a kind of long-life clean type gear of vehicle special oil prepares hydroisomerizing base oil 500N 690kg, alkylnaphthalene AN30 250 kg, polyalphaolefin PAO600 60 kg, pungent/5 kg of butyl liquid diphenylmethane amine, polymethacrylates 3kg, 2,6- To 5 kg of di-tert-butyl p-cresol, 0.5 kg of benzotriazole fatty amine salt, 10 kg of dialkyl dithio molybdenum trisulfate, tricresol phosphate 08 kg of ester, 0.03 kg of composite anti-foam agent, 3 kg of metal deactivator, 12 kg of aliphatic ester, 30 kg of sulfide isobutene.
Production method: (1), putting into hydroisomerizing base oil, alkylnaphthalene, polyalphaolefin into reaction kettle, be warming up to 65 DEG C, Stirring 20 minutes；
(2), pungent/butyl liquid diphenylmethane amine, polymethacrylates, 2,6- then are sequentially added to di-tert-butyl p-cresol, benzene Triazole fatty amine salt, dialkyl dithio molybdenum trisulfate, tricresyl phosphate, metal deactivator, aliphatic ester, sulfide isobutene, Composite anti-foam agent, stirs 45 minutes by 65 DEG C of constant temperature, and reconciling becomes finished product through 25 Mm filter systems after completing.
Quality index

Claims (6)

1. a kind of long-life clean type gear of vehicle special oil, it is characterised in that including following components in percentage by weight: basis Oil and additive, oily 5.631%~18.308% based on the additional amount of additive, the base oil includes at least three kinds of groups Point: hydroisomerizing base oil 55%~88%, alkylnaphthalene 10%~30%, polyalphaolefin 2%~15%, the additive include at least ten Kind component: pungent/butyl liquid diphenylmethane amine 0.3%~1.5%, methacrylate pour-point depressant 0.1%-1%, 2,6- to di-t-butyl pair Cresols 0.2%~1%, benzotriazole fatty amine salt 0.03%~1%, dialkyl dithio molybdenum trisulfate 0.5%~4%, tricresyl phosphate 0.2~2%, composite anti-foam agent 0.001~0.008%, metal deactivator 0.1%~1%, aliphatic ester 1%~4%, sulfide isobutene 2%-4%。
2. long-life clean type gear of vehicle special oil as described in claim 1, it is characterised in that including following weight percent The component of ratio: base oil and additive, oily 7.653% based on the additional amount of additive, the base oil includes at least three kinds Component: hydroisomerizing base oil 69%, alkylnaphthalene 25%, polyalphaolefin 6%, the additive include at least ten kinds of components: pungent/butyl Liquid diphenylmethane amine 0.5%, methacrylate pour-point depressant 0.3%, 2,6- to di-tert-butyl p-cresol 0.5%, benzotriazole fatty amine salt 0.05%, dialkyl dithio molybdenum trisulfate 1%, tricresyl phosphate 0.8%, composite anti-foam agent 0.003%, metal deactivator 0.3%, Aliphatic ester 1.2%, sulfide isobutene 3%.
3. long-life clean type gear of vehicle special oil special oil as claimed in claim 1 or 2, it is characterised in that described plus hydrogen Isomery base oil is 100N or 150N or 500N.
4. a kind of long-life clean type gear of vehicle special oil as claimed in claim 1 or 2, it is characterised in that the alkylnaphthalene For AN23 or AN30.
5. a kind of long-life clean type gear of vehicle special oil as claimed in claim 1 or 2, it is characterised in that the poly- α alkene Hydrocarbon is PAO600.
6. the method for making the long-life clean type gear of vehicle special oil as described in Claims 1 to 5 is any, it is characterised in that The following steps are included:
(1), hydroisomerizing base oil, alkylnaphthalene, polyalphaolefin are put into reaction kettle, are warming up to 60~70 DEG C, stirring 10~30 Minute；
(2), pungent/butyl liquid diphenylmethane amine, polymethacrylates, 2,6- then are sequentially added to di-tert-butyl p-cresol, benzene Triazole fatty amine salt, dialkyl dithio molybdenum trisulfate, tricresyl phosphate, metal deactivator, aliphatic ester, sulfide isobutene, Composite anti-foam agent, stirs 30-60 minutes by 60 DEG C~70 DEG C of constant temperature, and reconciling becomes finished product through 25 Mm filter systems after completing.
CN201810978037.XA 2018-08-27 2018-08-27 Long-life clean type vehicle gear special oil and preparation method thereof Active CN109181825B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110819426A (en) * 2019-10-22 2020-02-21 烟台恒邦化工有限公司 Special oil for 75W-90 viscosity grade vehicle gear and preparation method thereof
CN111500346A (en) * 2020-04-21 2020-08-07 辽宁三特石油化工有限公司 Gear oil with long service life
CN114574271A (en) * 2022-03-04 2022-06-03 洛阳轻捷润滑油科技有限公司 Lubricating oil for large-displacement heavy motorcycle and preparation method thereof
CN115058276A (en) * 2022-06-29 2022-09-16 黎光泰富(苏州)科技有限公司 Long-life clean spindle oil

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CN107868691A (en) * 2016-09-27 2018-04-03 中国石油化工股份有限公司 A kind of viscosity rank heavy duty automobile gear oil compositions of 75W 90 and its application

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WO2007127661A1 (en) * 2006-04-24 2007-11-08 The Lubrizol Corporation Star polymer lubricating composition
US20090163391A1 (en) * 2007-12-20 2009-06-25 Chevron U.S.A. Inc. Power Transmission Fluid Compositions and Preparation Thereof
US20140187457A1 (en) * 2013-01-03 2014-07-03 Exxonmobil Research And Engineering Company Lubricating compositions having improved shear stability
CN103865620A (en) * 2014-04-09 2014-06-18 刘佩仓 Special lubricating oil for dobby
CN105969498A (en) * 2016-05-31 2016-09-28 广东哈弗石油能源有限公司 Environment-friendly energy-saving hydrodynamic drive oil composition
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110819426A (en) * 2019-10-22 2020-02-21 烟台恒邦化工有限公司 Special oil for 75W-90 viscosity grade vehicle gear and preparation method thereof
CN111500346A (en) * 2020-04-21 2020-08-07 辽宁三特石油化工有限公司 Gear oil with long service life
CN114574271A (en) * 2022-03-04 2022-06-03 洛阳轻捷润滑油科技有限公司 Lubricating oil for large-displacement heavy motorcycle and preparation method thereof
CN114574271B (en) * 2022-03-04 2023-10-27 洛阳轻捷润滑油科技有限公司 Lubricating oil for large-displacement heavy motorcycle and preparation method thereof
CN115058276A (en) * 2022-06-29 2022-09-16 黎光泰富(苏州)科技有限公司 Long-life clean spindle oil

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