JPH06116454A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:To obtain a thermoplastic resin compsn. excellent in water resistance, impact strength, heat resistance, mechanical properties, etc., by compounding a specific styrene polymer, a specific thermoplastic resin, a specific catalyst, etc. CONSTITUTION:The compsn. is prepd. by compounding 10-95 pts.wt. syndiotactic styrene polymer (A) (e.g. PS), 50 pts.wt. or lower rubberlike elastomer (B) (e.g. a styrene-butadiene block copolymer rubber), 0.1-20 pts.wt. thermoplastic resin (C) having polar groups and compatible with component A (e.g. a maleic anhydride-modified syndiotactic PS), 0.1-90 pts.wt. inorg. filler (D) (e.g. glass fiber) surface-treated with a coupling agent (e.g. aminosilane) and/or 1-99 pts.wt. functional thermoplastic resin other than component A, 5 pts.wt. or lower nucleating agent (E), and 0.01-5 pts.wt. acidic or basic catalyst (F) (e.g. aluminum distearate) for catalyzing the reaction of component C with component D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoplastic resin composition, and more specifically, a styrene-based thermoplastic resin composition suitable for molding industrial materials such as electric / electronic parts, industrial structural materials, automobile parts, and home appliances. Regarding things.

[0002]

2. Description of the Related Art Conventionally, various thermoplastic resins have been blended with inorganic fillers and other resins to improve their heat resistance, mechanical properties and dimensional stability. ing. In the field of engineering plastics, polyester, polyamide, polycarbonate, etc. have been studied and put into practical use, but recently, demands for heat resistance, impact resistance, high elastic modulus, and water resistance have increased, and Improvement is desired. On the other hand, in recent years, a styrene-based polymer having a syndiotactic structure (hereinafter sometimes referred to as "syndiotactic polystyrene").
Has been developed and is attracting attention as an engineered plastic having heat resistance and water resistance, but it is not sufficient in terms of rigidity, impact strength, release strength, and there is a strong demand for improvement in heat resistance.

The research group of the inventors of the present invention has investigated the styrenic polymer having a syndiotactic structure.
A method of blending an inorganic filler for the purpose of improving mechanical properties and heat resistance (JP-A-62-257948),
Furthermore, a method for improving the adhesiveness with an inorganic filler (Japanese Patent Laid-Open No. 2-2021)
No. 258855, Japanese Patent Laid-Open No. 3-126743,
Japanese Patent Application No. 3-76008, Japanese Patent Application No. 4-14815
Issue specification). But these methods
Although there is a marked improvement effect compared to the conventional technology, it is still insufficient and there is room for improvement. In particular, in the latter, in order to improve the adhesiveness between the syndiotactic polystyrene and the inorganic filler, the atactic polystyrene compatible with the syndiotactic polystyrene, the syndiotactic polystyrene and the polyphenylene ether have a skeleton, a polar group Although the ones containing so-called modified ones (so-called modified ones) were used as adhesives, sufficient effects cannot be obtained unless a large amount of these is added, so they inhibit the crystallization of syndiotactic polystyrene and cause heat resistance. sex,
It had a possibility of lowering the solvent resistance. In addition, excessive kneading conditions are required to sufficiently carry out the reaction between these adhesives and the surface treatment agent, which may cause an undesired decrease in molecular weight and the generation of decomposition products, and may reduce mechanical properties. Was there. Further, the research group of the present inventors investigated a polymer alloy of a styrene polymer having a syndiotactic structure and another resin (polyamide, PET, PBT, etc.), and modified the same as the compatibilizer in the same manner as above. Although a method using the atactic polystyrene, syndiotactic polystyrene and polyphenylene ether was proposed (Japanese Patent Laid-Open No. 3-126744), this case also had the above-mentioned problems. Therefore, by simply using a small amount of adhesive or compatibilizer, the adhesiveness with the inorganic filler and the compatibility with other resins can be efficiently improved, resulting in water resistance, impact resistance, heat resistance, and elastic modulus. , And further intensive research was conducted to develop a composition of syndiotactic polystyrene that is excellent in releasing rigidity and other mechanical properties.

[0004]

As a result, when a syndiotactic polystyrene-based resin composition is produced, the polar group in the thermoplastic resin compound used as an adhesive or a compatibilizing agent and the surface of the filler or It has been found that the above problems can be solved by adding a catalyst that promotes the reaction between the functional groups present in other resin compounds to be blended. The present invention has been completed based on such findings. That is, the present invention provides (A) 10 to 95 parts by weight of a styrene polymer having a syndiotactic structure,
(B) 50 to 50 parts by weight of a rubber-like elastic material, 0.1 to 20 parts by weight of a thermoplastic resin (C) having a polar group and having good compatibility with the component (A), (D) coupling Inorganic filler surface-treated with an agent 0.1 to 90 parts by weight and / or 1 to 99 parts by weight of a thermoplastic resin other than the component (A) having a functional group,
(E) 5 parts by weight or less of a nucleating agent, and (F) an acidic or basic catalyst for promoting the reaction of the (C) component and the (D) component 0.01
Provided is a thermoplastic resin composition containing 5 to 5 parts by weight as a main component.

The styrene polymer having a syndiotactic structure, which is the component (A) of the present invention, is used as a base component of the resin composition of the present invention. Here, the syndiotactic structure in the styrene-based polymer having a syndiotactic structure means that the stereochemical structure is a syndiotactic structure, that is, a phenyl group which is a side chain with respect to the main chain formed from a carbon-carbon bond, It has a steric structure in which substituted phenyl groups are alternately located in opposite directions, and its tacticity is determined by the nuclear magnetic resonance method ( ¹³ C-
NMR method). ^The tacticity measured by the ¹³ C-NMR method can be indicated by the abundance ratio of a plurality of continuous structural units, for example, diad in the case of 2, triad in the case of 3 and pentad in the case of 5. However, the styrene-based polymer having a syndiotactic structure referred to in the present invention is usually 75% or more, preferably 85% or more in racemic dyad, or 30% or more, preferably 50% or more in racemic pentad. Polystyrene with syndiotacticity, poly (alkyl styrene), poly (halogenated styrene), poly (halogenated alkyl styrene), poly (alkoxy styrene), poly (vinyl benzoate), hydrogenated polymers of these, And a mixture thereof or a copolymer containing them as a main component. As the poly (alkylstyrene), poly (methylstyrene), poly (ethylstyrene), poly (isopropylstyrene), poly (tertiarybutylstyrene), poly (phenylstyrene), poly (vinylnaphthalene), There are poly (vinyl styrene) and the like, and as poly (halogenated styrene), there are poly (chlorostyrene), poly (bromostyrene), poly (fluorostyrene) and the like. The poly (halogenated alkylstyrene) includes poly (chloromethylstyrene), and the poly (alkoxystyrene) includes poly (methoxystyrene) and poly (ethoxystyrene). Of these, particularly preferable styrene polymers include polystyrene, poly (p-methylstyrene), poly (m-methylstyrene), poly (p-tertiarybutylstyrene), poly (p-chlorostyrene), poly ( m-chlorostyrene), poly (p-fluorostyrene), hydrogenated polystyrene and copolymers containing these structural units.

There is no particular limitation on the molecular weight of this styrene polymer, but the weight average molecular weight is preferably 100.
It is at least 00, more preferably at least 50,000. Further, the molecular weight distribution is not limited in its width or width, and various kinds can be applied. Here, if the weight average molecular weight is less than 10,000, the thermal properties and mechanical properties of the resulting composition or molded product may be deteriorated, which is not preferable. Such a styrene-based polymer having a syndiotactic structure is a styrene-based single polymer, for example, in an inert hydrocarbon solvent or in the absence of a solvent, using a titanium compound and a condensation product of water and a trialkylaluminum as a catalyst. It can be produced by polymerizing a monomer (a monomer corresponding to the styrene polymer) (JP-A-62-187708). Regarding poly (halogenated alkyl styrene), JP-A-1-46912.
Japanese Patent Laid-Open No. 17850/1989.
It can be obtained by the method described in Japanese Patent Publication No. 5 or the like. The blending ratio of the styrene-based polymer having the syndiotactic structure is 10 to 95 parts by weight, preferably 20 to
90 parts by weight. If it is less than 10 parts by weight, the properties of the styrene-based polymer having a syndiotactic structure cannot be exhibited, while if it exceeds 95 parts by weight, heat resistance,
Insufficient rigidity and impact resistance. The styrene-based polymer having a syndiotactic structure can be used alone or in combination of two or more.

The rubber-like elastic body which is the component (B) of the present invention is used for improving the impact resistance of the resin composition of the present invention. Various materials can be used as such a rubber-like elastic material, but a rubber-like copolymer containing a styrene compound as one component thereof is preferable. For example, styrene-butadiene block copolymer rubber (SB
R), styrene-butadiene-styrene block copolymer (SBS), hydrogenated styrene-butadiene-styrene block copolymer (SEBS), styrene-isoprene block copolymer (SIR), styrene-isoprene-styrene block copolymer Combined (SIS), hydrogenated styrene-isoprene-styrene block copolymer (SEP)
S), ethylene propylene rubber (EPM), ethylene propylene diene rubber (EPDM), ethylene butylene rubber (EBM) or rubbers modified with these. Among these, particularly preferable are SEBS, SBR, SB
S, SIS, SIR and SEPS. Alternatively, as described in Japanese Patent Application Laid-Open No. 1-292049, one or two or more monomer units selected from the group consisting of alkyl acrylates, alkyl methacrylates, and polyfunctional monomers having conjugated diene type double bonds. Granular elastomer obtained by polymerizing a vinyl monomer in the presence of a polymer obtained by polymerizing a polymer, for example, acrylonitrile-styrene grafted butadiene rubber (ABS), acrylonitrile-styrene grafted butadiene-butyl acrylate Copolymer rubber (AABS), methyl methacrylate-styrene grafted butyl acrylate rubber (MAS), styrene grafted butadiene rubber (SB), methyl methacrylate-styrene grafted butadiene rubber (MBS),
Methyl methacrylate-styrene grafted butadiene-butyl acrylate copolymer rubber (MABS) may be mentioned. Furthermore, one or more block or graft copolymers selected from the group consisting of AB block copolymers, A grafted B copolymers and B grafted A copolymers (where A is an attack Chick polystyrene, acrylonitrile-styrene random copolymer, styrene-maleic anhydride random copolymer, styrene-acrylonitrile-maleimide random copolymer, styrene-
Methyl methacrylate random copolymer and styrene-
One or more styrene-based polymers or styrene-based copolymers selected from methacrylic acid random copolymers are shown, and B is selected from polybutadiene, polyisoprene, hydrogenated polybutadiene, hydrogenated polyisoprene and polycarbonate. One or more kinds, and one or more kinds of polymers selected from polyamide, polymethylmethacrylate, polyethylene terephthalate, and polybutylene terephthalate are shown. ) Can be mentioned. As the rubber-like elastic body, other than the above, natural rubber,
Polybutadiene, polyisoprene, polyisobutylene,
Examples thereof include neoprene, ethylene-propylene copolymer rubber, polysulfide rubber, thiochol rubber, acrylic rubber, urethane rubber, silicone rubber and epichlorohydrin rubber. As these rubber-like elastic bodies, as described below, rubber-like elastic bodies modified by reacting with a compound having a polar group and an unsaturated group used for introducing a polar group such as polyphenylene ether having a polar group are used. May be.
The mixing ratio of the rubber-like elastic material is 0 to 50 parts by weight, and it is not always necessary to add it in the present invention, but in order to obtain a sufficient impact resistance improving effect, it is in the range of 5 to 30 parts by weight. It is preferable to add it. On the other hand, if the compounding ratio of the rubber-like elastic body exceeds 50 parts by weight, the heat resistance and the rigidity are lowered, which is not preferable.

The thermoplastic resin having a polar group and having good compatibility with the component (A), which is the component (C) of the present invention, is a styrene resin having a syndiotactic structure which is the component (A). It is used as an adhesive or a compatibilizer between the polymer and the inorganic filler as the component (D) or a thermoplastic resin other than the component (A). Here, the polar group in the component (C) is not particularly limited, but examples thereof include acid halides, carbonyl groups, acid anhydrides, acid amides, carboxylic acid esters, acid azides, sulfone groups, nitrile groups, and cyano groups. Group, isocyanic acid ester group, amino group, hydroxyl group, imide group, thiol group, oxazoline group, epoxy group and the like. A particularly preferable polar group is an acid anhydride, and among them, a maleic anhydride group is preferable. The content of the polar group may be 0.05% by weight or more with respect to the styrene polymer having a syndiotactic structure which is the component (A), and if less than 0.05% by weight, the mechanical strength may be improved. I can't hope. In addition, the term “good compatibility with the component (A)” as used in the present invention means that the component (A) is completely or partially compatible with the component (A). Such component (C) is produced by reacting a conventionally known thermoplastic resin with a compound having an unsaturated group and a polar group which is a so-called modifier.

Examples of the thermoplastic resin suitable as the component (C) include a modified polyphenylene ether and a styrene polymer having a modified syndiotactic structure. Polyphenylene ether, which is a raw material for producing a modified polyphenylene ether,
It is a known compound and, for this purpose, US Pat.
06,874, 3,306,875, 3,257,357
No. 3 and No. 3,257,358 can be referred to. Polyphenylene ethers are usually prepared by oxidative coupling reactions to form homopolymers or copolymers in the presence of copper amine complexes, one or more di- or tri-substituted phenols. Here, the copper amine complex may be a copper amine complex derived from primary, secondary and tertiary amines. Examples of suitable polyphenylene ethers include poly (2,3-dimethyl-
6-ethyl-1,4-phenylene ether), poly (2
-Methyl-6-chloromethyl-1,4-phenylene ether), poly (2-methyl-6-hydroxyethyl-
1,4-phenylene ether), poly (2-methyl-6)
-N-butyl-1,4-phenylene ether), poly (2-ethyl-6-isopropyl-1,4-phenylene ether), poly (2-ethyl-6-n-propyl-)
1,4-phenylene ether), poly (2,3,6-trimethyl-1,4-phenylene ether), poly [2-
(4'-methylphenyl) -1,4-phenylene ether], poly (2-bromo-6-phenyl-1,4-phenylene ether), poly (2-methyl-6-phenyl-
1,4-phenylene ether), poly (2-phenyl-)
1,4-phenylene ether), poly (2-chloro-
1,4-phenylene ether), poly (2-methyl-)
1,4-phenylene ether), poly (2-chloro-6)
-Ethyl-1,4-phenylene ether), poly (2-
Chloro-6-bromo-1,4-phenylene ether),
Poly (2,6-di-n-propyl-1,4-phenylene ether), poly (2-methyl-6-isopropyl-
1,4-phenylene ether), poly (2-chloro-6)
-Methyl-1,4-phenylene ether), poly (2-
Methyl-6-ethyl-1,4-phenylene ether),
Poly (2,6-dibromo-1,4-phenylene ether), poly (2,6-dichloro-1,4-phenylene ether), poly (2,6-diethyl-1,4-phenylene ether) and poly ( 2,6-dimethyl-1,4-phenylene ether) and the like. 2 of phenolic compounds such as those used in the preparation of said homopolymers
Copolymers such as those derived from the species or more are also suitable. Further examples include graft copolymers and block copolymers of vinyl aromatic compounds such as polystyrene and the aforementioned polyphenylene ether. Of these, poly (2,6-dimethyl-1,4-phenylene ether) is particularly preferably used.

There are no particular restrictions on the syndiotactic polystyrene used as the raw material for the production of the styrene polymer having a modified syndiotactic structure, and the one used as the component (A) can be used as it is.
From the viewpoint of compatibility with the component (A), it is preferable to use a copolymer of styrene and substituted styrene. The composition ratio of the copolymer is not limited, but the substituted styrene content is preferably 1 to 50 mol%. If it is less than 1 mol%, the modification may be difficult, while if it exceeds 50 mol%, the compatibility with the styrene polymer having an unmodified syndiotactic structure which is the component (A) may be deteriorated. Not preferable. Particularly preferred substituted styrene as a comonomer of a copolymer is poly (alkylstyrene) such as poly (methylstyrene), poly (ethylstyrene), poly (isopropylstyrene), poly (tertiarybutylstyrene), poly (vinylstyrene), and the like. ); Poly (chlorostyrene), poly (bromostyrene), poly (fluorostyrene), etc. poly (halogenated styrene); poly (chloromethylstyrene), etc. poly (halogenated alkylstyrene); and poly (methoxystyrene) , Poly (ethoxystyrene)
And the like, such as poly (alkoxystyrene). A styrene-based polymer having a modified atactic structure can also be used as the component (C). In this case, the amount used is preferably 10% by weight or less of the component (A). When the amount used exceeds 10% by weight, the heat resistance of the composition of the present invention may be lowered.

As the modifying agent used for modifying the above-mentioned styrene polymer having a polyphenylene ether and a syndiotactic structure, as described above, an unsaturated group,
That is, a carbon-carbon double bond or a carbon-carbon triple bond, and a carboxylic acid group as a polar group, a group derived from a carboxylic acid, that is, various salts or esters in which a hydrogen atom or a hydroxyl group of a carboxyl group is substituted, an acid amide, A compound having an acid anhydride, an imide, an acid azide, an acid halide or an oxazoline, a nitrile, an epoxy group, an amino group, a hydroxyl group or an isocyanate group in the same molecule can be used. As the compound having a polar group and an unsaturated group, an unsaturated carboxylic acid, an unsaturated carboxylic acid derivative, an unsaturated epoxy compound, an unsaturated alcohol, an unsaturated amine and an unsaturated isocyanic acid ester are mainly used. Specifically, maleic anhydride, maleic acid, fumaric acid, maleimide and its N-substituted product, maleic acid ester, maleic hydrazide, a reaction product of maleic anhydride and a diamine, for example,

[0012]

[Chemical 1]

(Wherein R represents an aliphatic group or an aromatic group) and the like, methyl nadic acid anhydride; dichloromaleic anhydride; maleic acid amide; itaconic acid; itaconic anhydride, etc. Organic acids and their anhydrides or acid amides, soybean oil; millet oil; castor oil; linseed oil; hempseed oil; cottonseed oil; sesame oil; rapeseed oil; peanut oil; camellia oil; olive oil; coconut oil; Acrylic acid; Butenoic acid; Crotonic acid; Vinyl acetic acid; Methacrylic acid; Pentenoic acid; Angelica acid;
3-pentenoic acid; α-ethylacrylic acid;
β-methylcrotonic acid; 4-pentenoic acid; 2-hexenoic acid; 2-methyl-2-pentenoic acid; 3-methyl-2-pentenoic acid; α-ethylcrotonic acid; 2,2-dimethyl-
3-butenoic acid; 2-heptenoic acid; 2-octenoic acid; 4-
Decenoic acid; 9-Undecenoic acid; 10-Undecenoic acid; 4
-Dotecenoic acid; 5-dotecenoic acid; 4-tetradecenoic acid;
9-tetradecenoic acid; 9-hexadecenoic acid; 2-octadecenoic acid; 9-octadecenoic acid; eicosenoic acid; docosenoic acid; erucic acid; tetracosenoic acid;
2,4-pentadienoic acid; 2,4-hexadienoic acid; diallylacetic acid; geranium acid; 2,4-decadienoic acid;
2,4-dodecadienoic acid; 9,12-hexadecadienoic acid; 9,12-octadecadienoic acid; hexadecatrienoic acid; linoleic acid; linolenic acid; octadecatrienoic acid; eicosadienic acid; eicosatrienoic acid; eicos Satetraenoic acid; ricinoleic acid; eleostearic acid; oleic acid; eicosapentaenoic acid; erucic acid; docosadienoic acid; docosatrienoic acid; docosatetraenoic acid; docosapentaenoic acid; tetracosenoic acid; hexacosenoic acid;
Hexacodienoic acid; Octacosenoic acid; Unsaturated carboxylic acids such as traaconcenoic acid or esters of these unsaturated carboxylic acids; Acid amides; Anhydrides or allyl alcohols; Crotyl alcohol; Methyl vinyl carbinol;
Allyl carbinol; Methyl propenyl carbinol;
4-Penten-1-ol; 10-Undecane-1-ol; Propangyl alcohol; 1,4-Bentadien-3-ol; 1,4-Hexadiene-3-ol;
3,5-hexadiene-2-ol; 2,4-hexadiene-1-ol; hydroxyethyl methacrylate; general formula _{C n H 2n-5 OH,} C n H 2n-7 OH, C n H 2n-9 OH ( In the formula, n is a positive integer) 3-butene-1,2-diol; 2,5-dimethyl-3-hexene-2,5-diol; 1,5-hexadiene-3,
4-diol; unsaturated alcohol such as 2,6-octadiene-4,5-diol or an unsaturated amine in which the OH group of such an unsaturated alcohol is replaced with an NH ₂ group, or a low content of butadiene; isoprene or the like. Polymerization (for example, one having an average molecular weight of about 500 to 10,000) or high molecular weight polymer (for example, one having an average molecular weight of 10,000 or more) to which maleic anhydride is added; phenols are added; or an amino group; a carboxylic acid group; a hydroxyl group; Examples thereof include those introduced with an epoxy group and the like, allyl isocyanate and the like.

Examples of vinyl compounds having an epoxy group include glycidyl methacrylate; glycidyl acrylate; vinyl glycidyl ether; hydroxyalkyl (meth) acrylate glycidyl ether; polyalkylene glycol (meth) acrylate glycidyl ether; glycidyl itaconate. Among these, maleic anhydride and glycidyl methacrylate are particularly preferable. It goes without saying that the above modifiers include compounds containing two or more unsaturated groups and two or more polar groups (same or different), and it is also possible to use two or more compounds. It is possible.

Styrene-based polymerization having a modified polyphenylene ether and a modified syndiotactic structure is carried out in the presence or absence of a solvent or another resin in the styrene-based polymerization having the above polyphenylene ether or syndiotactic structure. It can be obtained by coupling the above modifier to the polymerization. There are various methods for producing these modified polymers. For example, the polymer as a raw material and a modifier are melt-kneaded at a temperature of 150 to 350 ° C. using a roll mill, a Banbury mixer, an extruder or the like to react. And a method of heating and reacting in a solvent such as benzene, toluene and xylene. Further, in order to facilitate these reactions, benzoyl peroxide, di-t-butyl peroxide, dicumyl peroxide, t-butyl peroxybenzoate, azobisisobutyronitrile, azobisisovaleronitrile, The presence of a radical generator such as 2,3-diphenyl-2,3-dimethylbutane is effective.
As a preferable method, a method of melt-kneading in the presence of a radical generator can be mentioned. Typical examples are the modified polyphenylene ether and the modified styrene polymer having a syndiotactic structure (C).
The mixing ratio of the components is 0.1 to 20 parts by weight, preferably 0.5 to
10 parts by weight, more preferably 1 to 5 parts by weight. If it is less than 0.1 part by weight, the effect of improving mechanical properties and heat resistance is small, while if it exceeds 20 parts by weight, heat resistance may be impaired. Particularly, when the modified polyphenylene ether is used as the component (C), the range of 0.5 to 3 parts by weight is preferable. When using a styrene-based polymer having a modified syndiotactic structure,
A range of 0.5 to 10 parts by weight is preferable. As the component (C), one type can be used alone, or two or more types can be used in combination.

The thermoplastic resin other than the component (A) having the inorganic filler surface-treated with the coupling agent and the functional group, which is the component (D) of the present invention, may be one or more of the former or the latter. Not only can they be used in combination, but they can also be used in combination. Here, there are various kinds of inorganic fillers such as fibrous, granular, and powdery. Examples of the fibrous filler include glass fiber, carbon fiber, whiskers, Kevlar fiber, ceramic fiber, metal fiber and the like. Specifically, the whiskers include boron, alumina, silica, silicon carbide, etc., the ceramic fibers include gypsum, potassium titanate, magnesium sulfate, magnesium oxide, etc., and the metal fibers include copper, aluminum, steel, etc. Here, the shape of the filler is cloth, mat, bundle cut, short fiber, filament,
There are whiskers. In the case of convergent cutting, the length is 0.05-
It is preferably 50 mm and the fiber diameter is 5 to 20 μm. In the case of a cloth or mat, the length is preferably 1 mm or more, more preferably 5 mm or more. On the other hand, examples of the granular or powdery filler include talc, carbon black, graphite, titanium dioxide, silica, mica, calcium carbonate, calcium sulfate, barium carbonate, magnesium carbonate, magnesium sulfate, barium sulfate, oxysulfate, tin oxide, Alumina, kaolin, silicon carbide, metal powder, glass powder, glass flakes, glass beads and the like can be mentioned. Of these fillers, glass fillers such as glass filaments, glass fibers, glass rovings, glass mats, glass powders, glass flakes and glass beads are particularly preferable.

The above-mentioned coupling agent used for the surface treatment of the inorganic filler is used for improving the adhesiveness between the filler and the component (C). It can be appropriately selected and used from known ring agents. Specific examples of the silane coupling agent include triethoxysilane,
Vinyltris (β-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, β- (1,1-epoxycyclohexyl) ethyltrimethoxysilane, N
-Β- (aminoethyl) -γ-aminopropyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane Methoxysilane, γ-mercaptopropyltrimethoxysilane, γ-chloropropyltrimethoxysilane,
γ-aminopropyltrimethoxysilane, γ-aminopropyl-tris (2-methoxy-ethoxy) silane, N
-Methyl-γ-aminopropyltrimethoxysilane, N
-Vinylbenzyl-γ-aminopropyltriethoxysilane, triaminopropyltrimethoxysilane, 3-ureidopropyltrimethoxysilane, 3-4,5 dihydroimidazolepropyltriethoxysilane, hexamethyldisilazane, N, O- (bis Trimethylsilyl) amide, N, N-bis (trimethylsilyl) urea and the like can be mentioned. Of these, preferred is γ-aminopropyltrimethoxysilane, N-β- (aminoethyl)-
Aminosilanes such as γ-aminopropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, and epoxysilanes.

Specific examples of titanium coupling agents include isopropyl triisostearoyl titanate, isopropyl tridodecylbenzenesulfonyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate, tetraisopropyl bis (dioctyl phosphite) titanate, tetraoctyl. Bis (ditridecylphosphite) titanate, tetra (1,1-diallyloxymethyl-1-butyl) bis (ditridecyl) phosphite titanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (dioctylpyrophosphate) ethylene titanate, Isopropyl trioctanoyl titanate,
Isopropyl dimethacryl isostearoyl titanate, isopropyl isostearoyl diacrylic titanate, isopropyl tri (dioctyl phosphate) titanate, isopropyl tricumyl phenyl titanate,
Isopropyltri (N-amidoethyl, aminoethyl)
Examples thereof include titanate, dicumylphenyloxyacetate titanate, diisostearoyl ethylene titanate and the like. Preferred among these is isopropyl tri (N-amidoethyl, aminoethyl) titanate.

The surface treatment of the filler using such a coupling agent can be carried out by an ordinary known method, and there is no particular limitation. For example, a sizing treatment in which an organic solvent solution or suspension of the above coupling agent is applied to a filler as a so-called sizing agent, or dry mixing using a Henschel mixer, super mixer, Loedige mixer, V-type blender, or the like. The spraying method, the integral blending method, the dry concentrate method, or the like can be performed by an appropriate method depending on the shape of the filler, but sizing treatment, dry mixing, or spraying method is preferable. Further, a film-forming substance for glass can be used together with the above coupling agent. The film-forming substance is not particularly limited, and examples thereof include polyester-based, urethane-based, epoxy-based, acrylic-based, and vinyl acetate-based polymers.

The content of the surface-treated inorganic filler as the component (D) is 0.1 to 90 parts by weight, preferably 1 to 50 parts by weight, more preferably 10 to 30 parts by weight. here,
If the amount of the inorganic filler is less than 0.1 part by weight, sufficient effects such as heat resistance, rigidity and impact resistance are not recognized, and if it exceeds 90 parts by weight, the dispersibility is poor and molding becomes difficult. Furthermore, in the present invention, an organic filler can be added in addition to the above inorganic filler. Here, examples of the organic filler include organic synthetic fibers and natural plant fibers.
Specific examples of the organic synthetic fibers include wholly aromatic polyamide fibers and polyimide fibers.

Having a functional group (A) which constitutes the component (D) together with the inorganic filler surface-treated with the coupling agent.
Thermoplastic resins other than the components improve the impact resistance, elongation and surface hardness of syndiotactic polystyrene, and improve the hygroscopicity, dimensional stability, heat resistance, rigidity, warpage and burr properties of other resins. Used for. Here, the thermoplastic resin that can be blended as the component (D) is a hydroxyl group, an amino group,
There is no particular limitation as long as it has a functional group such as a carboxylic acid, an acid anhydride, an epoxy group, an amide group, an ester group, a cyano group, a halogen, a thiol, an isocyanate, and a double bond. For example, polyphenylene ether, Modified polyethylene, modified polypropylene, modified polybutene,
Modified polyolefin such as modified polypentene; Polyester such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate; Polyamide; Polythioether such as polyphenylene sulfide; Polycarbonate; Polyarylate; Polysulfone; Polyether ether ketone; Polyether sulfone; Polyimide; Polymethylmethacrylate; ethylene-
Acrylic acid copolymer; Acrylonitrile-styrene copolymer; Acrylonitrile-chlorinated polyethylene-styrene copolymer; Ethylene-vinyl acetate copolymer; Ethylene-vinyl alcohol copolymer; Vinyl chloride resin; Chlorinated polyethylene; Fluorinated Polyethylene; polyacetal; thermoplastic polyurethane elastomer; 1,2-polybutadiene; styrene-maleic anhydride copolymer; styrene-glycidyl methacrylate copolymer and the like, or modified products thereof. Preferred thermoplastic resins include those having affinity or reactivity with the polar group of component (C), especially modified polyolefins, olefin-polar vinyl monomer copolymers, polyamides, polycarbonates, polyarylates. , Polyethylene terephthalate, polybutylene terephthalate, modified polyphenylene sulfide and the like. These thermoplastic resins can be used alone or in combination of two or more. Also, without a functional group,
Further, another thermoplastic resin having good compatibility with the above-mentioned thermoplastic resin having a functional group can be used together. For example, a combination of modified polyolefin and polyolefin or modified SEBS and EPM may be used.

The mixing ratio of the thermoplastic resin as the component (D) is 1 to 99 parts by weight, preferably 5 to 95 parts by weight, more preferably 10 to 50 parts by weight. If the amount of this thermoplastic resin is less than 1 part by weight, the effect of modifying syndiotactic polystyrene on the resin performance is not recognized, while if it exceeds 99 parts by weight, the effect of modifying the thermoplastic resin by syndiotactic polystyrene is not recognized. .

The nucleating agent which is the component (E) of the present invention is used in the resin composition of the present invention in order to bring out properties such as heat resistance, elasticity, solvent resistance, dimensional stability and release rigidity. Such nucleating agents include metal salts of organic acids and organic phosphorus compounds. There are various kinds of these compounds, and examples of metal salts of organic acids include benzoic acid,
Di-tert-butylbenzoic acid, p- (tert-butyl) benzoic acid, cyclohexanecarboxylic acid (hexahydrobenzoic acid), aminobenzoic acid, β-naphthoic acid, cyclopentanecarboxylic acid, succinic acid, diphenylacetic acid, glutaric acid,
Isonicotinic acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, benzenesulfonic acid, glycolic acid, caproic acid, isocaproic acid, phenylacetic acid, cinnamic acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, etc. Examples thereof include metal salts such as lithium salts, sodium salts, potassium salts, calcium salts, aluminum salts, magnesium salts and zinc salts of organic acids and their derivatives. Of these, preferred are aluminum salts of di-tert-butylbenzoic acid, aluminum salts of p- (tert-butyl) benzoic acid, sodium salts of cyclohexanecarboxylic acid, and sodium salts of β-naphthoic acid.
Further, as the organic phosphorus compound, for example, the following general formula

[0024]

[Chemical 2]

(In the formula, R ¹ is a hydrogen atom or a carbon number 1
To 18 alkyl groups, R ² is an alkyl group having 1 to 18 carbon atoms, a group represented by the following general formula,

[0026]

[Chemical 3]

Alternatively, it indicates M _{1 / a} . Also, M is Li,
It represents Na, K, Mg, Ca, Zn or Al, and a represents the valence of M. ) An organophosphorus compound represented by

[0028]

[Chemical 4]

(In the formula, R ³ represents a methylene group, an ethylidene group, a propylidene group or an isopropylidene group, and R ⁴ and R ⁵ respectively represent a hydrogen atom or a carbon number of 1 to 6).
Is an alkyl group. Further, M and a are the same as above. An organic phosphorus compound represented by Among these organic phosphorus compounds, a preferred one is sodium methylenebis (2,4-di-t-butylphenol) acid phosphate represented by the following general formula.

[0030]

[Chemical 5]

Further specific examples of the above nucleating agent are described in Japanese Patent Application No. 1-2201350.

The mixing ratio of the nucleating agent as the component (E) is 0 to 5
In the present invention, it is not necessarily required to add, but in order to promote crystallization of the resin composition,
It is preferable to add it in the range of 0.01 to 5 parts by weight, and 0.0
More preferably, it is added in the range of 5 to 3 parts by weight. On the other hand, even if the blending ratio of the nucleating agent exceeds 5 parts by weight, a further crystallization promoting effect cannot be obtained. The nucleating agents may be used alone or in combination of two or more.

The acidic or basic catalyst which is the component (F) of the present invention is used to reduce the addition amount of the component (C) and to moderate the kneading conditions. As such a catalyst, a known catalyst that promotes the reaction between the above-mentioned component (C) and component (D) can be selected and used as necessary.
A preferred catalyst is an element having a high oxygen affinity (Al, M
g, Ca, Zn, S, P, Si, etc.), which are acidic or basic among organic or inorganic compounds, and among them, Al, Mg, Ca, Zn, and
It is an organic compound containing S, P and Si and having Bronsted or Lewis acidity and having a high affinity with the resin.

Specifically, for example, aluminum monostearate, aluminum distearate, monoethoxy aluminum, diethoxy aluminum, triethoxy aluminum, mono-t-butyl aluminum benzoate, di-t-butyl aluminum benzoate, alumina, etc. Aluminum compounds, magnesium compounds such as magnesium chloride, magnesium stearate, magnesium benzoate, ethoxy magnesium, magnesium hydroxide, calcium compounds such as calcium acetate, calcium stearate, calcium benzoate, calcium chloride, calcium hydroxide, zinc acetate, Zinc compounds such as zinc stearate, zinc benzoate, zinc chloride, zinc hydroxide, laurylbenzene sulfonic acid, dodecyl sulfonic acid, lauryl sulfonic acid, ethane Rufonic acid, ethanesulfonyl chloride, p-toluenesulfonic acid, p-toluenesulfonic acid chloride, octyl p-toluenesulfonic acid, naphthalenesulfonic acid, naphthalenesulfonic acid chloride, sulfur compounds such as toluidine sulfate, dioctyl sulfate, phenylphosphonic acid, Phenylphosphonic dichloride, Phenylphosphonous dichloride, Ethyl dichlorophosphate, Hypophosphorous acid, Lithium phosphate, Triphenylphosphine, Phenyldichlorophosphine, Sodium naphthylphosphate, Calcium naphthylphosphate, Dilaurylphenylphosphite, Magnesium phosphate dibasic, Magnesium phosphate tribasic, Calcium hydrogen phosphate, Calcium dihydrogen phosphate, Sodium biphosphate, Phosphoric acid, Phosphorous acid, Potassium dibasic phosphate,
Dibasic potassium phosphate, tertiary potassium phosphate, pyrophosphoric acid, sodium metaphosphate, tri-n-butyl phosphate,
Phosphorus compounds such as tributylphosphine, tri-n-butyl phosphite, trioctylphosphine, triphenyl phosphate, triphenyl phosphite and triphenylphosphine oxide, dimethoxydiphenylsilane, methoxytriphenylsilane, tetraethoxysilane, tri Examples thereof include silicon compounds such as phenylchlorosilane.

Of the above compounds, particularly preferred compounds are:
Aluminum distearate, di-t-butyl aluminum benzoate, diethoxy aluminum, magnesium chloride, magnesium stearate, magnesium benzoate, ethoxy magnesium, calcium stearate,
Calcium benzoate, zinc chloride, zinc stearate, zinc benzoate, octyl p-toluenesulfonate, dioctyl sulfate, phenylphosphonic acid, triphenylphosphine, dilaurylphenyl phosphite, tri-n-butyl phosphate, tributylphosphine. , Tri-n-butyl phosphite, trioctylphosphine, triphenyl phosphate, triphenyl phosphite and the like.

The blending ratio of the above catalyst is 0.01 to 5 parts by weight, preferably 0.02 to 1.0 part by weight, and more preferably 0.0.
1 to 0.5 parts by weight. If the amount of the catalyst is less than 0.01 part by weight, the catalytic effect is not recognized, while if it exceeds 5 parts by weight, the physical properties of the composition are adversely affected. Further, among the compounds used as these catalysts, some of the metal salts have a nucleating effect by themselves, and they can also be used as the nucleating agent of the component (E). An example is di-t-butyl-
Aluminum benzoate may be mentioned.

In addition to the above, the resin composition of the present invention contains an antioxidant, an ultraviolet absorber, and
Additives such as external lubricants, antistatic agents, colorants, flame retardants, flame retardant aids, and other thermoplastic resins can be blended as necessary.

The resin composition of the present invention comprises the above-mentioned (A),
It is prepared by blending (C), (D) and (F) components, and optionally (B), (E) component and other additives and blending. As the blending method, a conventionally known melt kneading method, solution blending method, or the like can be appropriately adopted. Further, as a method of blending the inorganic filler treated with the coupling agent which is the component (D), a method of laminating a sheet made of the component (A) or the composition thereof and a glass mat, and melting (A) ) It is possible to employ a method in which the component or its composition and the long fiber inorganic filler are mixed in a liquid in the form of slurry, and the mixture is deposited and then heated. Generally, it is preferable to use a usual melt-kneading using a Banbury mixer, a Henschel mixer or a kneading roll.

[0039]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. Each test described below was carried out under the following conditions. Izod impact strength (with notch) test: JIS K
7110. Heat distortion temperature (18.5kgf) test: JIS K720
Compliant with 7. Mold release rigidity test: It was judged by visually observing whitening due to the protruding pin at the time of molding, and was evaluated in four grades of very good (⊚), good (∘), normal (△) and bad (x). Tensile strength test: Based on JIS K7113. Adhesion evaluation by SEM: SEM (scanning type el
It was evaluated by relative judgment from the SEM photograph with an ectron microscope) and evaluated in four grades of very good (◎), good (○), normal (△), and bad (×). Evaluation of dispersed particle size by SEM: SEM (scanning type
The particle size was evaluated from the SEM photograph of the cross section of the sample by an electron microscope, and the relative judgment was made, and the evaluation was made in three grades of good (◯), normal (△), and bad (×).

Production Example 1 1 kg of a styrene-p-methylstyrene copolymer having a syndiotactic structure (p-methylstyrene content 12 mol%), 30 g of maleic anhydride, and 2,3-dimethyl-2,2 as a radical generator. 10 g of 3-diphenylbutane (NOFMER BC, manufactured by NOF CORPORATION) was dry blended, and the screw rotation speed was 200 using a 30 mm twin-screw extruder.
Melt kneading was performed at rpm and a set temperature of 300 ° C. The resin temperature at this time was about 330 ° C. The strand was cooled and then pelletized to obtain a syndiotactic styrene polymer modified with maleic anhydride. To measure the denaturation rate, 1 g of the obtained modified syndiotactic polystyrene was dissolved in ethylbenzene and then reprecipitated in methanol, the recovered polymer was Soxhlet extracted with methanol, and after drying, denaturation was performed by carbonyl absorption intensity and titration of IR spectrum. I asked for the rate. The modification rate was 1.05% by weight.

Production Example 2 Production Example 2 was repeated except that polyphenylene ether was used instead of the styrene-p-methylstyrene copolymer having a syndiotactic structure. The modified polyphenylene ether thus obtained had a modification ratio of 1.35% by weight.

Example 1 Syndiotactic polystyrene (weight average molecular weight 34
8,000, weight average molecular weight / number average molecular weight 2.64) 65 parts by weight, 5 parts by weight of maleic anhydride-modified syndiotactic polystyrene obtained in Production Example 1 and methylenebis (2,4-di- 0.5 parts by weight of sodium t-butylphenol) acid phosphate sodium (NA-11, manufactured by ADEKA ARGUS CORPORATION), 0.5 parts by weight of aluminum distearate as a catalyst, and (2,2) as an antioxidant.
6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite (manufactured by ADEKA ARGUS CORPORATION, P
EP-36) 0.1 part by weight, tetrakis (methylene-3-
(3 ′, 5′-di-t-butyl-4′-hydroxyphenyl)) propionate (manufactured by ADEKA ARGUS CORPORATION, MA)
RK A060) 0.1 part by weight was added and dry blended with a Henschel mixer, and aminosilane-treated glass fiber (13 μm / 3 mm) 3 was used as a filler.
While side-feeding 0 part by weight, it was pelletized by a twin-screw extruder. Using the obtained pellets, injection molding was performed to obtain Izod test pieces, bending test pieces and tensile test pieces. Using the obtained test piece, Izod impact strength, thermal deformation temperature measurement, mold release rigidity evaluation, and adhesiveness evaluation by SEM were carried out. The results are shown in Table 1.

Examples 2 to 4 The same procedure as in Example 1 was carried out except that the catalyst shown in Table 1 was used. The results are shown in Table 1.

Example 5 Syndiotactic polystyrene (weight average molecular weight 34
8,000, weight average molecular weight / number average molecular weight 2.64) 69 parts by weight The same as in Example 1 except that 1 part by weight of the maleic anhydride-modified polyphenylene ether obtained in Production Example 2 was used. I did. The results are shown in Table 1.

Examples 6 to 8 The procedure of Example 5 was repeated except that the catalyst shown in Table 1 was used. The results are shown in Table 1.

Example 9 pt-butyl aluminum benzoate (manufactured by Dainippon Ink and Chemicals, Inc., which also functions as a catalyst and a nucleating agent,
PTBBA-A1) The same procedure as in Example 5 was carried out except that 0.5 part by weight was used. The results are shown in Table 1.

Comparative Examples 1 and 2 The procedure of Example 1 or 5 was repeated except that no catalyst was added. The results are shown in Table 1. By adding the catalyst as shown in Table 1, G
The adhesiveness with F is improved, and impact strength, heat distortion temperature, etc. can be improved.

Example 10 Carried out except that methylenebis (2,4-di-t-butylphenol) acid phosphate sodium (NA-11, manufactured by ADEKA ARGUS CORPORATION) was not used as a nucleating agent, but aluminum distearate was used as a catalyst. The same procedure as in Example 5 was performed. The results are shown in Table 1.

Comparative Example 3 Comparative Example 2 except that NA-11 was not used as the nucleating agent.
It carried out similarly to. The results are shown in Table 1.

[0050]

[Table 1]

[0051]

[Table 2]

[0052]

[Table 3]

Example 11 Syndiotactic polystyrene (weight average molecular weight 34
8,000, weight average molecular weight / number average molecular weight 2.64) 58 parts by weight, maleic anhydride-modified syndiotactic polystyrene obtained in Production Example 1 5 parts by weight, SEBS
(Shell Chemical Co., Kraton G-1651) 7 parts by weight, methylenebis (2,4-di-t-butylphenol) acid phosphate sodium as a nucleating agent (Adeka Argus Co., NA-11) 0.5 parts by weight, 0.5 parts by weight of aluminum di-stearate as a catalyst, and (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite as an antioxidant (made by ADEKA ARGUS CORPORATION, PEP-36) 0 0.1 parts by weight of tetrakis (methylene-3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl)) propionate (MARK AO60 manufactured by ADEKA ARGUS CORPORATION) and 0.1 parts by weight of Henschel were added. After dry blending with a mixer, aminosilane-treated glass fiber as filler (Nippon Electric Glass Co., Ltd., 03T-488, 13 μm) 3mm) while 30 parts by side feeding and pelletized by a twin-screw extruder. Using the obtained pellets, injection molding was performed to obtain Izod test pieces, bending test pieces and tensile test pieces. Using the obtained test piece, Izod impact strength, thermal deformation temperature measurement, mold release rigidity evaluation, and adhesiveness evaluation by SEM were carried out. The results are shown in Table 2.

Examples 12 to 14 The same procedure as in Example 11 was carried out except that the catalyst shown in Table 2 was used. The results are shown in Table 2.

Example 15 Syndiotactic polystyrene (weight average molecular weight 34
Example 1 except that 1 part by weight of the maleic anhydride-modified polyphenylene ether obtained in Production Example 2 was used for 62 parts by weight of 8,000, weight average molecular weight / number average molecular weight 2.64).
The same procedure as in 1 was performed. The results are shown in Table 2.

Examples 16 to 18 The same procedure as in Example 15 was carried out except that the catalysts shown in Table 2 were used. The results are shown in Table 2.

Example 19 Aluminum pt-butyl benzoate (manufactured by Dainippon Ink and Chemicals, Inc., serving also as a catalyst and a nucleating agent)
Example 15 except that PTBBA-A1) 0.5 part by weight was used.
It carried out similarly to. The results are shown in Table 2.

Example 20 Example 15 was repeated except that NA-11 was not added as a nucleating agent and aluminum distearate was used as a catalyst.

Comparative Examples 4 and 5 The procedure of Example 11 or 15 was repeated, except that no catalyst was added. The results are shown in Table 2.

Comparative Example 6 The procedure of Comparative Example 5 was repeated except that NA-11 was not used as a nucleating agent. The results are shown in Table 2. By adding a catalyst as shown in Table 2, it is possible to improve the adhesiveness of GF and improve impact strength, heat distortion temperature, etc., as compared with the case where no catalyst is added.

[0061]

[Table 4]

[0062]

[Table 5]

[0063]

[Table 6]

[0064]

[Table 7]

Example 21 Syndiotactic polystyrene (weight average molecular weight 34
8,000, weight average molecular weight / number average molecular weight 2.64) 49 parts by weight, maleic anhydride-modified polyphenylene ether obtained in Production Example 2 1 part by weight, 6,6-nylon (PA-66, Ube Industries ( 2020B) 50 parts by weight, methylenebis (2,4-di-t-butylphenol) acid phosphate sodium (NA-11, manufactured by ADEKA ARGUS CORPORATION) as a nucleating agent 0.5 parts by weight, and di-stearin as a catalyst. 0.5 parts by weight of aluminum acid salt, 0.1 part by weight of (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite (manufactured by Adeka Argus Co., PEP-36) as an antioxidant, Tetrakis (methylene-3- (3 ', 5'-di-t-butyl-4'
-Hydroxyphenyl)) propionate (MARK AO60, manufactured by Adeka Argus Co., Ltd.) (0.1 part by weight) was added, dry blended with a Henschel mixer, and pelletized with a twin-screw extruder. Using the obtained pellets,
Injection molding was performed to obtain a tensile test piece. The obtained test piece was used to evaluate the tensile strength and the dispersed particle diameter by SEM. The results are shown in Table 3.

Examples 22 to 26 The procedure of Example 21 was repeated, except that the catalysts shown in Table 3 were used. The results are shown in Table 3.

Example 27 pt-butyl aluminum benzoate (manufactured by Dainippon Ink and Chemicals, Inc.) as a catalyst and a nucleating agent
Example 21 except that 0.5 parts by weight of PTBBA-A1) was used.
It carried out similarly to. The results are shown in Table 3.

Comparative Example 7 The procedure of Example 21 was repeated except that no catalyst was added. The results are shown in Table 3. By adding a catalyst as shown in Table 3, the dispersed particle size becomes finer and mechanical properties such as tensile strength can be improved as compared with the case where no catalyst is added.

[0069]

[Table 8]

[0070]

[Table 9]

[0071]

[Table 10]

[0072]

As described above, the thermoplastic resin composition of the present invention is excellent in water resistance, impact resistance, heat resistance, long-term heat stability, release rigidity, tensile strength, and other mechanical properties. ,
It is expected to be effectively used for various purposes such as molding of industrial materials such as electric / electronic materials, industrial structural materials, automobile parts, home appliances, and various machine parts.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location C08K 5/00 KFW 7242-4J 5/09 KFX 7242-4J 5/52 KGB 7242-4J 9/06 KGD 7242-4J C08L 21/00 LBH 8218-4J LBX 8218-4J 23/16 LCY 7107-4J 53/02 LLY 7142-4J LLZ 7142-4J 71/12 LQN 9167-4J LQP 9167-4J 101/02 LSY 7242 -4J

Claims (2)

[Claims] 1. (A) 10 to 95 parts by weight of a styrene polymer having a syndiotactic structure, (B) 50 parts by weight or less of a rubber-like elastic body, (C) a polar group, and (A) component. Thermoplastic resin having good compatibility with 0.1 to 20 parts by weight, (D) inorganic filler surface-treated with coupling agent
0.1 to 90 parts by weight and / or 1 to 99 parts by weight of a thermoplastic resin other than the component (A) having a functional group, 5 parts by weight or less of the (E) nucleating agent, and (F) the component (C) and the component (D). ) A thermoplastic resin composition containing 0.01 to 5 parts by weight of an acidic or basic catalyst that accelerates the reaction of the components. 2. The thermoplastic resin composition according to claim 1, wherein the component (C) is a modified polyphenylene ether or a styrene polymer having a modified syndiotactic structure.