JP6706083B2 - Method for producing resin composition - Google Patents

Description

The present invention relates to a method for producing a resin composition.

Polypropylene-based resins are low-specific-gravity and inexpensive plastics, and have excellent chemical resistance, solvent resistance, molding processability, and the like, and are therefore used for automobile parts, electric/electronic device parts, household electric products, and the like.

On the other hand, polyphenylene ether resin is flame retardant, heat resistance, dimensional stability, is known as an engineering plastic excellent in non-water absorption and electrical characteristics, but poor melt flowability and poor moldability, and, It has the drawback of poor solvent resistance and impact resistance.

These polypropylene resins and polyphenylene ether resins have the respective advantages, and various compositions have been proposed for the purpose of compensating for the drawbacks. For example, Patent Documents 1 to 4 propose a technique for improving mechanical strength. Has been done.

Specifically, a technique of using a high crystalline polypropylene resin and a medium crystalline polypropylene resin together in a specific ratio (Patent Document 1), a hydrogenation having a specific structure as an admixture of a polypropylene resin and a polyphenylene ether resin A technique using a block copolymer (Patent Document 2) has been proposed. Further, when melt-kneading a polypropylene-based resin and a polyphenylene ether-based resin, a technique of first adding the polypropylene-based resin to a melt of the polyphenylene ether-based resin and the admixture and further melt-kneading (Patent Document 3), melt-kneading A technique (Patent Document 4) of adding a polyamine compound and an acrylate compound for the purpose of reducing a heat-deteriorated product generated at that time has been proposed.

JP, 9-12799, A JP-A-9-12804 JP-A-9-302167 JP, 2010-138215, A

At present, resin compositions used for applications such as battery case of secondary batteries are required to have further excellent performances such as heat-resistant creep characteristics and toughness.
That is, a resin composition used as a material such as a secondary battery battery case that is often used in a harsh environment such as a high temperature environment such as an automobile engine room is required to have a high level of heat-resistant creep properties. In addition, there is an increasing demand for a secondary battery battery case and the like in terms of shape such as an increase in size and a reduction in wall thickness, and accordingly, a demand for toughness is also increasing.
Generally, the heat-resistant creep property and the toughness are contradictory properties, and it has been difficult to make them compatible at a high level.
Furthermore, in addition to these, there is an increasing demand for the appearance after molding.

Therefore, it is an object of the present invention to provide a resin composition which is excellent in balance between heat-resistant creep properties and toughness and which gives a molded article having a good appearance.

In order to solve the above problems, the present inventors have conducted extensive studies, and as a result, when a resin composition is produced by melt kneading, by adding a specific compound by a specific method, a heat-resistant creep can be obtained. The present invention has been completed by finding that a resin composition having an excellent balance between properties and toughness and having a good appearance can be obtained.

That is, the present invention is as follows.
[1]
100 parts by mass of the total amount of (A) polypropylene-based resin and (B) polyphenylene ether-based resin;
(C) 1 to 20 parts by mass of an admixture,
(D) 0.01 to 0.5 parts by mass of one or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters;
A method for producing a resin composition comprising:
A method for producing a resin composition, comprising the following steps.
(Step 1-1) A step of melt-kneading the entire amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) to obtain a kneaded product,
(Step 1-2) With respect to the kneaded product obtained in the step (1-1), the total amount of the component (A) and the rest of the component (D) (however, in the step (1-1) A step of melting and kneading (D) except when the whole amount of the component (D) is added.

[2]
100 parts by mass of the total amount of (A) polypropylene-based resin and (B) polyphenylene ether-based resin;
(C) 1 to 20 parts by mass of an admixture,
(D) 0.01 to 0.5 parts by mass of one or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters;
A method for producing a resin composition comprising:
A method for producing a resin composition, comprising the following steps.
(Step 2-1) 5 to 50 mass% of the component (A), the total amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) are melt-kneaded and kneaded. The process of obtaining things,
(Step 2-2) With respect to the kneaded product obtained in the step (2-1), 50 to 95% by mass of the component (A) and the rest of the component (D) (however, the step ( A step of adding and melting and kneading (2-1) except the case where all the components (D) are added).

[3]
Production of the resin composition according to [1] or [2] , wherein the content of the component (A) is 30 to 98 parts by mass relative to 100 parts by mass of the total amount of the component (A) and the component (B). Method.

[4]
The method for producing a resin composition according to any one of [1] to [3] , wherein the component (D) is a higher fatty acid metal salt.

[5]
The component (C) is one or more selected from the group consisting of a hydrogenated block copolymer, a polystyrene block chain-polyolefin block chain copolymer, and a polyphenylene ether block chain-polyolefin block chain copolymer. The method for producing the resin composition according to any one of [1] to [4] .

ADVANTAGE OF THE INVENTION According to this invention, the resin composition which can obtain the molded article which is excellent in the balance of heat-resistant creep property and toughness and has favorable appearance is obtained.

FIG. 1 is a schematic view (front view) showing the shape of a test piece used in the evaluation of heat resistant creep resistance of a resin composition. FIG. 2 is a schematic diagram (plan view) showing the shape of a flat plate used in the evaluation of the appearance of a molded article of a resin composition.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “the present embodiment”) will be described in detail. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to the following contents. The present invention can be appropriately modified and implemented within the scope of the gist.

[Method for producing resin composition]
The method for producing the resin composition of the present embodiment,
100 parts by mass of the total amount of (A) polypropylene-based resin and (B) polyphenylene ether-based resin;
(C) 1 to 20 parts by mass of an admixture,
(D) 0.01 to 0.5 parts by mass of one or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters;
A method for producing a resin composition containing: at least the following (Step 1-1) and (Step 1-2), or (Step 2-1) and (Step 2-2).
(Step 1-1) A step of melt-kneading the entire amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) to obtain a kneaded product.
(Step 1-2) With respect to the kneaded product obtained in the step (1-1), the total amount of the component (A) and the rest of the component (D) (however, in the step (1-1) A step of melt-kneading (excluding the case where all the components (D) are added).
(Step 2-1) A part of the component (A), the total amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) are melt-kneaded to obtain a kneaded product. Process.
(Step 2-2) With respect to the kneaded product obtained in the step (2-1), the rest of the component (A) and the rest of the component (D) (however, the step (2-1) The step of adding and melting and kneading the above (excluding the case where all the components (D) are added).
In the present specification, (A) polypropylene resin is “(A) component”, (B) polyphenylene ether resin is “(B) component”, (C) admixture is “(C) component”, ( D) One or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters may be referred to as "component (D)".
Moreover, in this specification, the resin composition manufactured by the manufacturing method of this embodiment may be called "the resin composition of this embodiment." In addition, a molded product obtained by molding the resin composition manufactured by the manufacturing method of the present embodiment may be referred to as “molded product of the present embodiment”.

First, the resin composition produced by the production method of the present embodiment and each component contained in the resin composition will be described in detail.

(Resin composition)
-(A) Polypropylene resin-
The resin composition of the present embodiment contains at least (A) polypropylene resin.
Examples of the component (A) include propylene homopolymers, copolymers of propylene and other monomers, and modified products thereof. The component (A) is preferably crystalline, and more preferably a crystalline propylene homopolymer or a crystalline propylene-ethylene block copolymer. Further, the component (A) may be a mixture of a crystalline propylene homopolymer and a crystalline propylene-ethylene block copolymer.
As the component (A), one type may be used alone, or two or more types may be used in combination.

Other monomers copolymerizable with propylene include, for example, α-olefins such as butene-1 and hexene-1. The polymerization form is not particularly limited, and may be a random copolymer, a block copolymer, or the like.

Examples of the method for producing the crystalline propylene-ethylene block copolymer include, for example, synthesizing a crystalline propylene homopolymer part in the first step of polymerization, and propylene, ethylene, and, if necessary, the second step and subsequent steps of polymerization. Examples thereof include a method of copolymerizing another α-olefin used in combination with the crystalline propylene homopolymer portion.

The method for producing the component (A) is not particularly limited, and a known method such as a method of polymerizing propylene or another monomer in the presence of a catalyst can be used. Specifically, for example, a method of polymerizing propylene or another monomer in the presence of the above catalyst and an alkylaluminum compound at a polymerization temperature of 0 to 100° C. and a polymerization pressure of 3 to 100 atm can be mentioned.
Examples of the catalyst used for producing the component (A) include a titanium trichloride catalyst and a titanium halide catalyst supported on a carrier such as magnesium chloride. In the production of the component (A), a chain transfer agent such as hydrogen may be added to adjust the molecular weight of the polymer.

As a polymerization method in the production of the component (A), either a batch method or a continuous method can be selected. The polymerization method is selected from such methods as solution polymerization in a solvent such as butane, pentane, hexane, heptane, and octane, slurry polymerization, bulk polymerization in a monomer without a solvent, gas phase polymerization in a gaseous monomer, and the like. it can.

In the production of the component (A), in addition to the above catalyst, an electron donating compound can be used as an internal donor component or an external donor component as the third component in order to enhance the isotacticity and polymerization activity of polypropylene. As the electron-donating compound, known compounds can be used, and examples thereof include ester compounds such as ε-caprolactone, methyl methacrylate, ethyl benzoate, methyl toluate, aromatic monocarboxylic acid ester, and alkoxy ester; phosphorous acid. Phosphorous acid esters such as triphenyl and tributyl phosphite; phosphoric acid derivatives such as hexamethylphosphoric triamide; alkoxysilanes such as aromatic alkylalkoxysilanes and aliphatic hydrocarbon alkoxysilanes; various ethers and various alcohols Various phenols; and the like.

The component (A) may be an unmodified polypropylene resin modified with a modifying agent such as α,β-unsaturated carboxylic acid or its derivative (including acid anhydride and ester). Examples of the modified polypropylene-based resin include those obtained by grafting/adding an unmodified polypropylene-based resin with an α,β-unsaturated carboxylic acid or a derivative thereof.
Specific examples include those in which the α,β-unsaturated carboxylic acid or its derivative is grafted or added to the polypropylene resin at a ratio of about 0.01 to 10% by mass of the entire polypropylene resin. .. The modified polypropylene resin, for example, in the presence or absence of a radical generator, in a molten state, a solution state or a slurry state, in the range of 30 ~ 350 ℃, the above-mentioned unmodified polypropylene resin and the modifier It is obtained by reacting. In the present embodiment, it may be a mixture of an unmodified polypropylene resin and a modified polypropylene resin in an arbitrary ratio.

The melt flow rate (MFR) (230° C., load 2.16 kg) of the component (A) is preferably 0.01 to 300 g/10 minutes, more preferably 0.1 to 100 g/10 minutes. It is more preferably 0.1 to 30 g/10 minutes. By setting the MFR within the above range, fluidity formation, rigidity and heat resistant creep can be balanced.
Further, if the polypropylene resin has an MFR within the above range, it may be used alone or in combination of two or more kinds.

The melting point of the component (A) is preferably 163°C or higher, more preferably 165°C or higher, and even more preferably 167°C or higher. By setting the melting point of the component (A) within the above numerical range, it is possible to further improve the rigidity and the heat-resistant creep property after heat history (for example, after heat history at 80° C. for 24 hours).
The melting point of the component (A) is measured by a differential scanning calorimeter (DSC) (manufactured by Perkin Elmer Co., Ltd., trade name “DSC-2 type”) under conditions of a temperature rising rate of 20° C./min and a temperature lowering rate of 20° C./min. Can be obtained by doing. Specifically, first, about 5 mg of the sample is held at 20° C. for 2 minutes, then heated to 230° C. at a heating rate of 20° C./minute, and held at 230° C. for 2 minutes. Then, the temperature is lowered to 20° C. at a temperature lowering rate of 20° C./minute, and the temperature is held at 20° C. for 2 minutes. In this case, the temperature of the top peak of the endothermic peak that appears when the temperature is raised at a temperature rising rate of 20° C./min can be obtained as the melting point.

（一般式（１）中、Ｒ₁、Ｒ₂、Ｒ₃、及びＲ₄は、それぞれ独立して、水素原子、ハロゲン原子、炭素数１〜７の第１級又は第２級のアルキル基、フェニル基、ハロアルキル基、アミノアルキル基、炭化水素オキシ基、又は少なくとも２個の炭素原子がハロゲン原子と酸素原子とを隔てているハロ炭化水素オキシ基を表す。） -(B) Polyphenylene ether resin-
The resin composition of the present embodiment contains at least (B) a polyphenylene ether (PPE) resin.
The component (B) is not limited to the following, but is a homopolymer and/or copolymer having a repeating unit structure represented by the following general formula (1); or a modified product thereof. Is preferred.

(In the general formula (1), R ₁ , R ₂ , R ₃ , and R ₄ are each independently a hydrogen atom, a halogen atom, a primary or secondary alkyl group having 1 to 7 carbon atoms, Represents a phenyl group, a haloalkyl group, an aminoalkyl group, a hydrocarbonoxy group, or a halohydrocarbonoxy group in which at least two carbon atoms separate a halogen atom and an oxygen atom.)

The reduced viscosity (0.5 g/dL chloroform solution, measured at 30° C.) of the component (B) is not particularly limited, but is preferably 0.15 to 0.7 g/dL, and 0.2 to 0.6 g. /DL is more preferable.
When the reduced viscosity of the component (B) is within the above range, excellent impact resistance and heat resistance can be obtained in the resin composition of this embodiment. The reduced viscosity of the component (B) can be adjusted by the production conditions such as the amount of catalyst during polymerization and the polymerization time.
The component (B) may be a mixture of two or more polyphenylene ether resins having different reduced viscosities.

The component (B) is not particularly limited, and known ones may be used. For example, poly(2,6-dimethyl-1,4-phenylene ether), poly(2-methyl-6-ethyl-1,4-phenylene ether), poly(2-methyl-6-phenyl-1,4-). Homopolymers such as phenylene ether) and poly(2,6-dichloro-1,4-phenylene ether); 2,6-dimethylphenol and other phenols (for example, 2,3,6-trimethylphenol and 2- Methyl-6-butylphenol) and the like; and the like. Among them, poly(2,6-dimethyl-1,4-phenylene ether) and a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol are preferable, and poly(2,6-dimethyl-1). , 4-phenylene ether) is more preferable.
As the component (B), one type may be used alone, or two or more types may be used in combination.

The method for producing the component (B) is not particularly limited, and a conventionally known method can be used. For example, a complex of a cuprous salt and an amine described in US Pat. No. 3,306,874 is used as a catalyst, and for example, , A method of oxidatively polymerizing 2,6-xylenol, U.S. Pat. No. 3,306,875, U.S. Pat. No. 3,257,357, U.S. Pat. No. 3,257,358, Japanese Examined Patent Publication No. 52-18880, and Japanese Unexamined Patent Publication No. 50-51197. And the methods described in JP-A-63-152628 and the like.

The component (B) may be the unmodified polyphenylene ether resin modified with a modifier such as a styrene monomer or a derivative thereof. In this case, for example, an unmodified polyphenylene ether resin may be grafted or added with a styrene monomer or a derivative thereof. The modified polyphenylene ether-based resin is, for example, in the presence or absence of a radical generator, in a molten state, a solution state or a slurry state at 80 to 350° C., and the above polyphenylene ether-based resin and a styrene-based monomer or a derivative thereof. It is obtained by reacting with.

Examples of the modifier for the polyphenylene ether-based resin include styrene-based monomers, α,β-unsaturated carboxylic acids, and derivatives thereof (eg, ester compounds, acid anhydride compounds, etc.). Examples of the styrene-based monomer include styrene, α-methylstyrene, and styrenesulfonic acid.

Specific examples of the modified polyphenylene ether-based resin include a modified polyphenylene ether-based resin in which a styrene-based monomer or a derivative thereof is grafted or added at a ratio of 0.01 to 10% by mass.

As the component (B), an unmodified polyphenylene ether resin and a modified polyphenylene ether resin may be used in combination. The mixing ratio of the unmodified polyphenylene ether-based resin and the modified polyphenylene ether-based resin is not particularly limited, and they can be mixed at any ratio.

In the method for producing the resin composition of the present embodiment, one or more selected from the group consisting of polystyrene, syndiotactic polystyrene and high impact polystyrene may be added to the component (B). In particular, 100 parts by mass of the polyphenylene ether-based resin was mixed with one or more kinds selected from the group consisting of polystyrene, syndiotactic polystyrene and high-impact polystyrene within a total amount of not more than 400 parts by mass. Those are preferable.

-(C) Admixture-
The resin composition of the present embodiment contains at least (C) an admixture. By containing the (C) admixture, the compatibility between the (A) component and the (B) component can be improved.

By containing the component (C), the resin composition of the present embodiment can form a matrix phase containing the component (A) and a dispersed phase containing the component (B). This makes it possible to further improve the thermal creep resistance of the obtained resin composition. The morphology of the resin composition can be confirmed by, for example, a transmission electron microscope.

The matrix phase may be composed of, for example, the component (A) alone. The dispersed phase may be composed of, for example, the component (B) alone or may be composed of the component (B) and the component (C). In this case, the resin composition is a dispersion that constitutes a matrix phase (a phase composed of the component (A)) and a dispersed phase (a phase composed of the component (B) or a phase composed of the component (B) and the component (C)). Have particles. The component (C) may be contained not only in the dispersed phase but also in the matrix phase to the extent that the effects of the present invention are not impaired. By taking such a morphology in the resin composition of the present embodiment, the component (B) contained in the disperse phase can be in a thermally more stable dispersed state, whereby the effect of the present embodiment is obtained. Is supposed to be further improved (however, the operation of the present embodiment is not limited to this).

The component (C) is preferably a copolymer having a segment block chain having a high compatibility with the component (A) and a segment block chain having a high compatibility with the component (B). High compatibility means that the phases are not separated.

Examples of the segment block chain having high compatibility with the component (B) include a polystyrene block chain and a polyphenylene ether block chain.
Examples of the segment block chain having high compatibility with the component (A) include a polyolefin block chain and a copolymer elastomer block chain of ethylene and α-olefin.
In this specification, the component (C) is not included in the range of the components (A) and (B).

The component (C) is, for example, 1 selected from the group consisting of a hydrogenated block copolymer, a polystyrene block chain-polyolefin block chain copolymer, and a polyphenylene ether block chain-polyolefin block chain copolymer. There are more than one species. Among these, hydrogenated block copolymers are preferable from the viewpoint of further excellent thermal stability. As the component (C), one type may be used alone, or two or more types may be used in combination.

As the hydrogenated block copolymer, at least a part of a block copolymer containing a polymer block a mainly containing a vinyl aromatic compound and a polymer block b mainly containing a conjugated diene compound is hydrogenated. And hydrogenated block copolymers.

A preferred specific example of the hydrogenated block copolymer is a polymer block a containing a vinyl aromatic compound as a main component and a total amount of 1,2-vinyl bonds and 3,4-vinyl bonds of 30 to 90%. It is preferably a hydrogenated block copolymer containing a polymer block b1 containing a conjugated diene compound as a main component. The total amount of 1,2-vinyl bonds and 3,4-vinyl bonds of the conjugated diene compound in the polymer block b1 is preferably 30 to 90% from the viewpoint of compatibility with the polyphenylene ether resin.

The polymer block a is preferably a homopolymer block of a vinyl aromatic compound or a copolymer block of a vinyl aromatic compound and a conjugated diene compound.
The term “mainly containing a vinyl aromatic compound” in the polymer block a means that the polymer block a contains a vinyl aromatic compound unit in an amount of more than 50% by mass. From the viewpoint of further excellent molding fluidity, impact resistance, weldability and appearance, the polymer block a preferably contains 70% by mass or more of a vinyl aromatic compound unit.

Examples of the vinyl aromatic compound constituting the polymer block a include styrene, α-methylstyrene, vinyltoluene, p-tert-butylstyrene, diphenylethylene and the like. Of these, styrene is preferable.
These may be used alone or in combination of two or more.

The number average molecular weight of the polymer block a is not particularly limited, but is preferably 15,000 or more. Further, it is preferably 50,000 or less. By setting the number average molecular weight of the polymer block a within the above range, the resin composition of the present embodiment can have more excellent heat-resistant creep resistance.
The number average molecular weight of the polymer block a can be measured by GPC (mobile phase: chloroform, standard substance: polystyrene).

The polymer block b is preferably a homopolymer block of a conjugated diene compound or a random copolymer block of a conjugated diene compound and a vinyl aromatic compound.
In the polymer block b, “mainly containing a conjugated diene compound” means that the polymer block b contains a conjugated diene compound unit in an amount of more than 50% by mass. From the viewpoint of further excellent molding fluidity, impact resistance, weld and appearance, the polymer block b preferably contains 70% by mass or more of the conjugated diene compound unit.

Examples of the conjugated diene compound constituting the polymer block b include butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene and the like. Of these, butadiene, isoprene and combinations thereof are preferable.
These may be used alone or in combination of two or more.

Regarding the microstructure of the polymer block b (bonded form of the conjugated diene compound), the 1,2-vinyl bond amount and the 3,4-vinyl bond amount relative to the total vinyl bond amount contained in the conjugated diene compound constituting the polymer block. The total amount of binding (hereinafter sometimes referred to as “total vinyl binding amount”) is preferably 30 to 90%, more preferably 45 to 90%, and further preferably 65 to 90%. Is more preferable.
By setting the total vinyl bond amount of the conjugated diene compound in the polymer block b within the above range, the compatibility with the polypropylene resin is further excellent. In particular, when the total vinyl bond content is 30% or more, the dispersibility of the component (A) in the resin composition can be further improved. By setting the total vinyl bond content to 90% or less, the excellent dispersibility of the component (A) is maintained and the economy is also excellent.
In particular, when the polymer block b is a polymer block containing butadiene as a main component, the total vinyl bond content of butadiene in the polymer block b is preferably 65 to 90%.
The total vinyl bond content can be measured by an infrared spectrophotometer. The calculation method is as described in Analytical Chemistry, Volume 21, No. 8, according to the method described in August 1949.

The component (C) is preferably a hydrogenated block copolymer of a block copolymer containing at least a polymer block a and a polymer block b.

When the polymer block a in the component (C) is represented by “a” and the polymer block b is represented by “b”, examples of the component (C) include ab, ab-a, b-a-b. _{-a, (a-b-) 4} Si, having a structure such as a-b-a-b- a, a vinyl aromatic compound - hydrogenated product of a conjugated diene compound block copolymer. Si in (ab-) ₄ Si is a reaction residue of a polyfunctional coupling agent such as silicon tetrachloride or tin tetrachloride, or a residue of an initiator such as a polyfunctional organolithium compound. ..

The molecular structure of the block copolymer containing the polymer block a and the polymer block b is not particularly limited, and may be, for example, linear, branched, radial, or any combination thereof. ..

In the polymer block a and the polymer block b, the distribution of the vinyl aromatic compound or the conjugated diene compound in the molecular chain of each polymer block is random or tapered (the monomer component increases or decreases along the molecular chain). ), a partial block, or any combination thereof.

When there are two or more polymer blocks a or b in the repeating unit, the two or more polymer blocks may have the same structure or different structures. Good.

The hydrogenated block copolymer as the component (C) is derived from the vinyl aromatic compound contained in the block copolymer before hydrogenation, from the viewpoint of further excellent molding fluidity, impact resistance, weldability and appearance. The unit is preferably 20 to 95% by mass, and more preferably 30 to 80% by mass. The content of the constituent unit derived from the vinyl aromatic compound can be measured by an ultraviolet spectrophotometer.

The number average molecular weight of the block copolymer before hydrogenation is preferably 5,000 to 1,000,000, more preferably 10,000 to 800,000, and 30,000 to 500,000. Is more preferable. The number average molecular weight can be measured by gel permeation chromatography (GPC, mobile phase: chloroform, standard substance: polystyrene).

The molecular weight distribution of the block copolymer before hydrogenation is preferably 10 or less. The molecular weight distribution can be calculated by obtaining the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) measured by GPC (GPC, mobile phase: chloroform, standard substance: polystyrene). ..

The hydrogenation rate of the double bond derived from the conjugated diene compound in the component (C) is not particularly limited, but is preferably 50% or more, and more preferably 80% or more from the viewpoint of further excellent heat resistance. More preferably, it is more preferably 90% or more. The hydrogenation rate can be measured by NMR.

The method for producing the hydrogenated block copolymer as the component (C) is not particularly limited, and a known production method may be adopted. For example, JP-A-47-011486, JP-A-49-066743, JP-A-50-075651, JP-A-54-126255, JP-A-56-010542 and JP-A-56-105542. 56-062847, JP-A-56-100840, JP-A-02-300218, UK Patent No. 1130770, US Patent No. 3281383, US Patent No. 3639517, UK Patent No. The production methods described in the specifications of 1020720, U.S. Pat. No. 3,333,024, U.S. Pat. No. 4,501,857 and the like can be mentioned.

The hydrogenated block copolymer as the component (C) is obtained by grafting or adding the hydrogenated block copolymer described above with an α,β-unsaturated carboxylic acid or its derivative (ester compound or acid anhydride compound). Alternatively, a modified hydrogenated block copolymer may be used.

The modified hydrogenated block copolymer, in the presence or absence of a radical generator, in a molten state, a solution state or a slurry state, in the range of 80 ~ 350 ℃, the above-mentioned hydrogenated block copolymer and α, It is obtained by reacting with β-unsaturated carboxylic acid or its derivative. In this case, it is preferable that the α,β-unsaturated carboxylic acid or its derivative is grafted or added to the hydrogenated block copolymer in a proportion of 0.01 to 10% by mass. Further, it may be a mixture of the hydrogenated block copolymer and the modified hydrogenated block copolymer in any ratio.

-(D) one or more compounds selected from higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters-
The resin composition of the present embodiment contains at least one compound selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters. As the component (D), higher fatty acid metal salts are preferable from the viewpoints of further excellent impact resistance, tensile elongation, and appearance of molded articles.
As the component (D), one type may be used alone, or two or more types may be used in combination.
The term "higher fatty acid" refers to an aliphatic monocarboxylic acid having 8 or more carbon atoms.

The higher fatty acid preferably has 8 to 40 carbon atoms. Examples of the higher fatty acid include, but are not limited to, saturated or unsaturated, linear or branched, aliphatic monocarboxylic acids. Examples of higher fatty acids include stearic acid, palmitic acid, behenic acid, erucic acid, oleic acid, lauric acid, montanic acid and the like.
These higher fatty acids may be used alone or in combination of two or more.

Examples of the higher fatty acid metal salt include the higher fatty acid metal salts.
Examples of the metal element forming a salt with a higher fatty acid include a Group 1 element (alkali metal), a Group 2 element (alkaline earth metal), a Group 3 element, zinc, aluminum, etc. of the Periodic Table of the Elements. .. Of these, alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; and aluminum are preferable.

Examples of the higher fatty acid metal salt include, but are not limited to, stearic acid metal salt, montanic acid metal salt, behenic acid metal salt, lauric acid metal salt, palmitic acid metal salt, and the like. Specifically, calcium stearate, aluminum stearate, zinc stearate, magnesium stearate, calcium montanate, sodium montanate, aluminum montanate, zinc montanate, magnesium montanate, calcium behenate, sodium behenate, zinc behenate. , Calcium laurate, zinc laurate, calcium palmitate and the like. As the higher fatty acid metal salt, montanic acid metal salt, behenic acid metal salt and stearic acid metal salt are preferably used, and among them, calcium stearate, aluminum stearate, zinc stearate, magnesium stearate, calcium montanate, montan. Zinc acid, magnesium montanate, calcium behenate and zinc behenate are preferable, calcium stearate, aluminum stearate, zinc stearate and magnesium stearate are more preferable, and calcium stearate, aluminum stearate and zinc stearate are further preferable.
These higher fatty acid metal salts may be used alone or in combination of two or more.

The higher fatty acid ester is an esterified product of the above-mentioned higher fatty acid and alcohol.
As the higher fatty acid ester, an esterified product of an aliphatic monocarboxylic acid having 8 to 40 carbon atoms and an aliphatic alcohol having 8 to 40 carbon atoms is preferable. Examples of the aliphatic alcohol include, but are not limited to, stearyl alcohol, behenyl alcohol, and lauryl alcohol.
Examples of the higher fatty acid ester include stearyl stearate and behenyl behenate.
These higher fatty acid esters may be used alone or in combination of two or more.

-Other materials-
The resin composition of the present embodiment may contain an inorganic filler, if necessary.
As the inorganic filler, for example, glass fiber, potassium titanate fiber, gypsum fiber, brass fiber, ceramics fiber, boron whisker fiber, mica, talc, silica, calcium carbonate, kaolin, calcined kaolin, wollastonite, zonotolite, Apatite, glass beads, flaky glass, fibrous, granular, plate-shaped or acicular inorganic reinforcing materials such as titanium oxide, inorganic filler surface-treated by a known method using a surface-treating agent such as a silane coupling agent Agents and the like. However, since the natural ore-based filler often contains a small amount of iron element, it is preferable to select and use a material obtained by purifying and removing the iron element. Of these, glass fibers, carbon fibers, and glass beads are preferable.
The inorganic fillers may be used alone or in combination of two or more.

The compounding amount of the inorganic filler is preferably 2 to 60% by mass, preferably 3 to 50% by mass, and 5 to 45% by mass with respect to the total amount of the resin composition. More preferable. When the blending amount is within the above range, the linear expansion coefficient due to mechanical strength and temperature change (for example, change from −30° C. to 120° C.) becomes small, excellent dimensional accuracy is excellent, and anisotropy is maintained. A molded product is obtained.

The resin composition of the present embodiment may contain various additives as necessary.
Examples of the additive include, but are not limited to, polyamides, polyesters, other thermoplastic resins such as polyolefins other than the component (A), plasticizers (low molecular weight polyolefins other than the component (A), Polyethylene glycol, fatty acid ester amides, etc.), antistatic agents, nucleating agents, fluidity improvers, reinforcing agents, various peroxides, spreading agents, organic thermal stability represented by hindered phenol antioxidants Agents, antioxidants, ultraviolet absorbers, light stabilizers, flame retardants, coloring agents and the like.
The content of the additive is preferably 10% by mass or less, more preferably less than 5% by mass, and further preferably 3% by mass or less, based on the total amount of the resin composition.

The resin composition of the present embodiment is composed of the components (A) to (D) as basic components.
The total amount of the components (A) and (B) contained in the resin composition of the present embodiment is preferably 80 to 99% by mass, and 80 to 98% by mass with respect to the total amount of the resin composition. Is more preferable.

The compounding amount of the component (A) is not particularly limited, but is preferably 30 to 98 parts by mass, and 30 to 95 parts by mass in 100 parts by mass of the total amount of the components (A) and (B). Is more preferable. When the compounding amount of the component (A) is 30 parts by mass or more, the moldability and the heat-resistant creep property are further excellent.

The blending amount of the component (B) is not particularly limited, but the blending amount of the component (B) is preferably 2 to 70 parts by mass in 100 parts by mass of the total amount of the components (A) and (B). It is more preferably 5 to 70 parts by mass. When the blending amount of the component (B) is 2 parts by mass or more, the heat resistance is further excellent.

The compounding amount of the component (C) is 1 to 20 parts by mass, and preferably 1 to 15 parts by mass, based on 100 parts by mass of the total amount of the components (A) and (B). When the compounding amount of the component (C) is within the above range, the balance between heat-resistant creep properties and impact resistance is excellent.

The blending amount of the component (D) is 0.01 to 0.5 parts by mass, and 0.03 to 0.5 parts by mass, based on 100 parts by mass of the total amount of the components (A) and (B). It is preferably 0.05 to 0.5 parts by mass, more preferably 0.1 to 0.5 parts by mass. When the blending amount of the component (D) is within the above range, a resin composition having a good balance between heat-resistant creep properties and impact resistance and a good appearance of a molded article can be obtained.

[Method for producing resin composition]
The method for producing the resin composition of this embodiment will be described.

In the manufacturing method of the present embodiment, various melt kneaders, kneading extruders, and the like can be used.
The melt kneader and the kneading extruder are not particularly limited, and a known kneader can be used. Examples thereof include a multi-screw extruder such as a single-screw extruder and a twin-screw extruder, and a heat-melt kneader such as a roll, a kneader, a Brabender plastograph, and a Banbury mixer. Of these, a twin-screw extruder is preferable. Specific examples thereof include kneading extruders such as "ZSK" series manufactured by Coperion, "TEM" series manufactured by Toshiba Machine Co., Ltd., and "TEX" series manufactured by Japan Steel Works, Ltd.

When an extruder is used, its type, standard, etc. are not particularly limited, and a known extruder can be appropriately used. The L/D ratio (effective barrel length (L)/barrel inner diameter (D)) of the extruder is preferably 20 to 75, and more preferably 30 to 60.

As the extruder, a first raw material supply port is provided on the upstream side with respect to the flow direction of the raw material, a first vacuum vent is provided on the downstream side thereof, a second raw material supply port is provided on the downstream side thereof, and further downstream thereof. Those provided with a second vacuum vent are preferable. The extruder may be further provided with a third raw material supply port, a third vacuum vent and the like downstream thereof. The total number of raw material supply ports of the extruder and their arrangement can be appropriately set in consideration of the number of types of materials of the resin composition.

The method of supplying the raw material to the second raw material supply port is not particularly limited, but a forced side feeder is used from the extruder side opening port rather than mere addition supply from the opening ports of the second and third raw material supply ports of the extruder. The method of adding and supplying by using is preferable because it is more stable.

The melt-kneading temperature and the screw rotation speed are not particularly limited, but usually, the melt-kneading temperature is preferably 200 to 370° C. and the screw rotation speed is preferably 100 to 1200 rpm.

In the production of the resin composition of the present embodiment, it can be produced by the following production method 1 or production method 2.

Manufacturing Method 1: A manufacturing method including (Step 1-1) and (Step 1-2).
(Step 1-1) A step of melt-kneading (B) component total amount, (C) component total amount, and (D) component 15 to 100 mass% to obtain a kneaded product,
(Step 1-2) With respect to the kneaded product obtained in (Step 1-1), the total amount of the component (A) and the remainder of the component (D) (however, the component (D) in the step (1-1)) (Excluding the case where the whole amount is added), and melt-kneading.

Manufacturing Method 2: A manufacturing method including (Step 2-1) and (Step 2-2).
(Step 2-1) A step of melt kneading a part of the component (A), the total amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) to obtain a kneaded product,
(Step 2-2) With respect to the kneaded product obtained in (Step 2-1), the rest of the component (A) and the rest of the component (D) (however, in the step (2-1), (D)) (Except when all components are added), and melt-kneading.

In these production methods, the addition amount of the component (D) in (Step 1-1) or (Step 2-1) is 15% by mass or more, preferably 30% by mass or more, and 50% by mass or more. Is more preferable. By setting the addition amount of the component (D) within the above range, it is possible to obtain a resin composition having an excellent balance between heat-resistant creep characteristics and impact resistance.
Further, in the step (1-1) in the production method 1, when the addition amount of the component (D) is 15% by mass or more, a resin composition having an excellent appearance of the molded product can be obtained.

In the manufacturing method 2, the component (A) is divided into (step 2-1) and (step 2-2) and added. At this time, in the step (2-1), it is preferable to add 5 to 50 mass% of the component (A), and more preferably 10 to 50 mass% of the component (A). By adding the above proportions, it is possible to obtain a resin composition having a particularly excellent balance between heat-resistant creep characteristics and impact resistance.
Further, in the step (2-2), it is preferable to add 50 to 95 mass% of the component (A), and more preferably 50 to 90 mass% of the component (A).

[Molding of resin composition]
The molded product of this embodiment can be manufactured by molding the resin composition of this embodiment by a known molding method. The molding method is not particularly limited, and examples thereof include injection molding, extrusion molding, press molding, blow molding, calender molding and cast molding.
Specifically, the resin composition is melted in a cylinder of an injection molding machine in which the cylinder temperature is adjusted within the range of the melting point of the component (A) to 330° C. or less, and the resin composition is injected into a mold having a predetermined shape. According to the method for producing a molded article of a predetermined shape, the resin composition is melted in an extruder in which the cylinder temperature is adjusted within the above range, and spun from a spinneret nozzle to produce a fibrous molded article. And a method of producing a film-shaped or sheet-shaped molded article by melting the resin composition in an extruder whose cylinder temperature is adjusted within the above range and extruding the resin composition from a T die.

The molded article manufactured by the above method may have a coating layer formed of a paint, a metal, another type of polymer, or the like on the surface.

The molded article of the present embodiment is particularly excellent in impact resistance and heat creep resistance in addition to chemical resistance, molding processability, heat resistance, dimensional stability, low water absorption, and electrical characteristics, so that it is an automobile part. It can also be used as an electric/electronic device component or a household electric appliance. In particular, it is suitable for automobile exterior/outer plate components, automobile interior components, automobile underhood components, secondary battery battery cases, and ink peripheral components for printers.

Hereinafter, the present invention will be described with reference to specific examples and comparative examples, but the present invention is not limited thereto.
The measuring methods and raw materials used in Examples and Comparative Examples are shown below.

(Measurement method of each characteristic)
(1) Melt Volume Flow Rate Using the resin composition pellets produced in Examples and Comparative Examples described later, the melt volume flow rate (cm ³ /10 min) was evaluated according to ISO 1133 at 250° C. and a load of 10 kg. .. It was determined that the higher the measured value, the more excellent the heat resistance.

(2) Charpy impact strength with notch Using resin composition pellets manufactured in Examples and Comparative Examples described later, a cylinder temperature is 240 to 280°C with an injection molding machine (TOSHIBA MACHINE CO., LTD. IS-80EPN). Then, the mold temperature was set to 60° C., and a JIS K7139 A-type multipurpose test piece was molded. Using a gear oven, the multipurpose test piece was allowed to stand for 24 hours in an environment of 80° C. for heat history treatment. A test piece was further cut out from the multipurpose test piece after the heat history treatment, and the Charpy impact strength (kJ/m ² ) was evaluated under the temperature condition of 23° C. according to ISO179. It was determined that the higher the measured value, the more excellent the impact resistance.

(3) Tensile test Using the resin composition pellets manufactured in Examples and Comparative Examples described later, an injection molding machine (manufactured by Toshiba Machine Co., Ltd.: IS-80EPN) was used to obtain a cylinder temperature of 240 to 280°C and a mold temperature. Was set to 60° C. to mold a JIS K7139 A type multipurpose test piece. Using a gear oven, the multipurpose test piece was allowed to stand for 24 hours in an environment of 80° C. for heat history treatment. The tensile test (MPa) and the tensile (nominal) breaking strain (%) were measured by performing a tensile test according to ISO527 using the multipurpose test piece after the thermal history treatment as a tensile test measurement test piece. It was determined that the higher the measured value, the more excellent the tensile strength or tensile fracture strain.

(4) Heat-resistant creep resistance Using the resin composition pellets produced in Examples and Comparative Examples described later, an injection molding machine (TI50G2 manufactured by Toyo Kikai Metal Co., Ltd.) was used to obtain a cylinder temperature of 245° C. and a mold temperature of 60. The test piece for creep measurement was obtained by setting the temperature to ℃. Using a gear oven, the test piece for creep measurement was allowed to stand in an environment of 80° C. for 24 hours to perform heat history treatment. A dumbbell molded product (thickness 1 mm) having the shape shown in FIG. 1 was used as the creep measurement test piece. FIG. 1 shows a simplified front view of a test piece used in the examples. Creep measurement test piece The width L1 of the test piece 1 was 65 mm, the width L2 was 40 mm, the width L3 was 22 mm, and the height H was 10 mm.
Creep measurement was performed using a test piece for creep measurement after thermal history treatment. Using a creep tester ("145-B-PC type" manufactured by Yasuda Seiki Co., Ltd.), the chuck distance is 40 mm, the test load is 12.25 MPa, the test temperature is 80°C, and the test time is 165 hours. The creep measurement (heat resistance creep resistance test) was performed under the conditions. Then, the strain (%) obtained by the following formula was defined as the heat-resistant creep resistance. It was determined that the lower the value of the heat creep resistance, the more excellent the heat creep resistance.
Strain (%)=(Displacement of distance between chucks of test piece after 165 hours)/(Distance between chucks)

(5) Appearance of molded product (mold temperature 80℃)
Using an injection molding machine (SE-130B, manufactured by Sumitomo Heavy Industries, Ltd.), the flat plate shown in FIG. 2 was manufactured at a cylinder temperature of 280° C. and a mold temperature of 60° C. The size of the flat plate was 350 mm×100 mm (thickness 2 mm). In FIG. 2, regions A and B are portions connected to the gate at the time of injection molding, and each gate diameter was 0.8 mmφ. The presence or absence of occurrence of silver streaks was visually confirmed around the gate and the weld portion of the flat plate. The appearance of the molded product was judged to be good when there was no silver streaks, and the appearance of the molded product was judged to be defective when there was silver streaks.

[Raw materials used in Examples and Comparative Examples]
[(A) Polypropylene resin]
(A-1)
Number average molecular weight=120,000, weight average molecular weight 1,280,000, molecular weight distribution (Mw/Mn)=10.7, melting point 168° C., density 0.90 g/cm ³ , MFR 0.4 g/10 min (230° C., 2.16 kg ) Polypropylene resin.
(A-2)
Number average molecular weight=120,000, weight average molecular weight 1,280,000, molecular weight distribution (Mw/Mn)=10.7, melting point 166° C., density 0.90 g/cm ³ , MFR 0.4 g/10 min (230° C., 2.16 kg ) And a polypropylene resin having a calcium stearate content of 0.05 wt %.

The molecular weight and the molecular weight distribution were measured by gel permeation chromatography (hereinafter, GPC).
<GPC conditions>
Measuring device: gel permeation chromatograph Alliance GPC 2000 type (manufactured by Waters)
Column: TSKgel GMH6-HT (manufactured by Tosoh) x 2 + TSKgel GMH6-HTL (manufactured by Tosoh) x 2 connected in series Flow rate: 1.0 mL/min Detector: Differential refractometer (RI)
Solvent: o-dichlorobenzene Column temperature: 140°C
Sample concentration: 0.15%
Injection volume: 0.5 mL
Molecular weight calibration: polystyrene conversion

[(B) Polyphenylene ether resin]
(B-1)
PPE was prepared in the same manner as in Example 1 of WO 2011/105504 as follows.
A 2000-liter jacketed stainless steel polymerization tank equipped with an iron sparger for introducing oxygen-containing gas, a stainless steel stirring turbine blade and a stainless steel baffle at the bottom of the polymerization tank, and equipped with a reflux condenser in the vent gas line at the top of the polymerization tank. While blowing nitrogen gas at a flow rate of 13 NL/min, 160.8 g of cupric oxide, 1209.0 g of 47% aqueous hydrogen bromide solution, 387.36 g of di-t-butylethylenediamine, 1875.2 g of dihydrogen bromide. -N-Butylamine, 5707.2 g of butyldimethylamine, 826 kg of toluene and 124.8 kg of 2,6-dimethylphenol were added, and the mixture was stirred until it became a homogeneous solution and the internal temperature of the reactor reached 25°C.
Next, dry air was introduced into the polymerization tank from the sparger at a rate of 1312 NL/min to start polymerization. Aeration was carried out for 142 minutes to control the internal temperature at the end of the polymerization to 40°C. The polymerization liquid at the end of the polymerization was in a solution state.
Aeration of the dry air was stopped, 100 kg of a 2.5 mass% aqueous solution of ethylenediaminetetraacetic acid tetrasodium salt (a reagent manufactured by Dojindo Laboratories) was added to the polymerization mixture, and the polymerization mixture was stirred at 70° C. for 150 minutes and then left still. Then, the organic phase and the aqueous phase were separated by liquid-liquid separation (GEA disk type centrifuge).
After the obtained organic phase was brought to room temperature, excess methanol was added to prepare a slurry in which polyphenylene ether was precipitated. Then, it filtered using the basket center (0-15 type by Tanabe Wiltech).
After filtration, excess methanol was placed in a basket centrifuge and filtered again to obtain wet polyphenylene ether. Next, the wet polyphenylene ether was put into a feather mill (FM-1S manufactured by Hosokawa Micron Co., Ltd.) in which a 10-mm round hole mesh was set, and after pulverization, it was kept at 150° C. and 1 mmHg for 1.5 hours using a conical dryer, and then dried. A PPE powder was obtained. The reduced viscosity of this PPE was 0.52 dL/g (0.5 g/dL, chloroform solution, measured at 30° C.).

[(C) Admixture]
(C-1)
A hydrogenated block copolymer having a structure of polystyrene-hydrogenated polybutadiene-polystyrene. The amount of styrene units contained in the block copolymer before hydrogenation is 43%, the amount of 1,2-vinyl bonds in the polybutadiene portion is 75%, the number average molecular weight of the polystyrene chains is 20,000, and the hydrogenation rate of the polybutadiene portion is Was 99.9%.
The hydrogenated block copolymer is prepared by anionic block copolymerization of styrene and butadiene in cyclohexane solvent using n-butyllithium as an initiator and tetrahydrofuran as a regulator of 1,2-vinyl bond content. A styrene-butadiene block copolymer was obtained. Next, using bis(η5-cyclopentadienyl)titanium dichloride and n-butyllithium as hydrogenation catalysts, the obtained styrene-butadiene block copolymer was treated at a hydrogen pressure of 5 kg/cm ² and a temperature of 50. Hydrogenation was carried out under conditions of °C. The polymer structure was controlled by adjusting the charged amount of monomers and the charging order. The molecular weight was controlled by adjusting the catalyst amount. The 1,2-vinyl bond content was controlled by adjusting the addition amount of the 1,2-vinyl bond modifier and the polymerization temperature. The hydrogenation rate was controlled by adjusting the hydrogenation time.
The 1,2-vinyl bond content of the polybutadiene portion was measured by an infrared spectrophotometer, and was measured by Analytical Chemistry, Volume 21, No. 8, calculated according to the method described in August 1949. The amount of bound styrene was measured by an ultraviolet spectrophotometer.
The number average molecular weight of the polystyrene chain was determined by GPC (mobile phase: chloroform, standard substance: polystyrene). The hydrogenation rate of the polybutadiene part was measured by a nuclear magnetic resonance apparatus (NMR).

[(D) One or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters]
(D-1) calcium stearate, melting point: 155° C., metal content: 6.7% by mass
(D-2) Stearic acid, melting point: 69° C., neutralization value: 196
(D-3) Stearyl stearate, melting point: 55° C.

[Other materials]
Ethylene bisstearic acid amide, melting point: 143°C

[Examples 1 to 10 and Comparative Examples 1 to 7]
A twin-screw extruder [TEM58SS: manufactured by Toshiba Machine Co., Ltd., L/D=53.8] having three supply ports on the upstream side and the downstream side was used. Regarding the supply port position, when the total length of the extruder cylinder is 1.0, the supply port at the position L=0 from the upstream is the first raw material supply port (upstream supply port), and the supply port at the position L=0.4. As the second raw material supply port (downstream supply port), the extruder barrel temperature is set to 270 to 320° C., the screw rotation speed is 450 rpm, and the discharge rate is 400 kg/hour. Got Each of the above-mentioned evaluations was performed using the obtained resin composition pellets. The details of the manufacturing method and the evaluation results are shown in Table 1 below.

In Examples 1 to 10, it was found that the molding fluidity, impact resistance, tensile elongation, and heat creep resistance were excellent in balance, and the appearance of the molded products was also good.
On the other hand, Comparative Examples 1 and 2 were inferior in impact strength and tensile elongation because the amount of the component (D) added was less than the range of the present invention.
Further, in Comparative Examples 4 and 5, although the amount of the component (D) added was within the range of the present invention, the amount of the component (D) added to the first raw material supply port was less than the range of the present invention. The impact strength and tensile elongation were inferior.
Comparative Example 6 was inferior in impact strength and tensile elongation because it did not contain the component (D) and used other materials.
In Comparative Example 3, the added amount of the component (D) exceeded the range of the present invention, and thus the appearance of the molded product was inferior.
In Comparative Example 7, the addition amount of the component (D) was within the range of the present invention, but was relatively large, and the addition amount of the component (D) added to the first raw material supply port was less than the range of the present invention. The appearance of the molded product was inferior.

INDUSTRIAL APPLICABILITY The resin composition of the present invention is used for automobile parts, electric/electronic device parts, household electric appliances, particularly car exterior/outer plate parts, car interior parts, car underhood parts, secondary battery battery case, printer ink peripheral parts. As, it has industrial applicability.

Claims (5)

100 parts by mass of the total amount of (A) polypropylene-based resin and (B) polyphenylene ether-based resin;
(C) 1 to 20 parts by mass of an admixture,
(D) 0.01 to 0.5 parts by mass of one or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters;
A method for producing a resin composition comprising:
A method for producing a resin composition, comprising the following steps.
(Step 1-1) A step of melt-kneading the entire amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) to obtain a kneaded product,
(Step 1-2) With respect to the kneaded product obtained in the step (1-1), the total amount of the component (A) and the rest of the component (D) (however, in the step (1-1) A step of melting and kneading (D) except when the whole amount of the component (D) is added. 100 parts by mass of the total amount of (A) polypropylene-based resin and (B) polyphenylene ether-based resin;
(C) 1 to 20 parts by mass of an admixture,
(D) 0.01 to 0.5 parts by mass of one or more compounds selected from the group consisting of higher fatty acids, higher fatty acid metal salts, and higher fatty acid esters;
A method for producing a resin composition comprising:
A method for producing a resin composition, comprising the following steps.
(Step 2-1) 5 to 50 mass% of the component (A), the total amount of the component (B), the total amount of the component (C), and 15 to 100 mass% of the component (D) are melt-kneaded and kneaded. The process of obtaining things,
(Step 2-2) With respect to the kneaded product obtained in the step (2-1), 50 to 95% by mass of the component (A) and the rest of the component (D) (however, the step ( A step of adding and melting and kneading (2-1) except the case where all the components (D) are added). Manufacturing method of the content of the component (A) with respect to the (A) component and the (B) total 100 parts by mass of the component is 30 to 98 parts by weight, the resin composition according to claim 1 or 2. The method for producing a resin composition according to any one of claims 1 to 3 , wherein the component (D) is a higher fatty acid metal salt. The component (C) is one or more selected from the group consisting of a hydrogenated block copolymer, a polystyrene block chain-polyolefin block chain copolymer, and a polyphenylene ether block chain-polyolefin block chain copolymer. The method for producing the resin composition according to any one of claims 1 to 4 , which is

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