Sumitomo Naugatuck Co., Ltd.

Sumitomo Dow Limited

Sugitomo Naugatuck Co., Ltd.

Motoichi Yano

Akitoshi Ito

Hajime Sakano

Takayoshi Fujiwara

Yasuhiro Honda

Mikio Kodama

Katsuji Abe

Satoshi Umeyama

Thermoplastic resin composition

A thermoplastic resin composition comprising (A) 5 to 50 parts by weight of a saturated polyester resin, (B) 10 to 70 parts by weight of a graft polymer obtainable by polymerizing an aromatic vinyl compound and an unsaturated nitrile in the presence of a conjugated diene base rubber, (C) 10 to 70 parts by weight of an .alpha.-alkylstyrene-unsaturated nitrile copolymer comprising 50 to 85% by weight of the .alpha.-alkylstyrene and 50 to 15% by weight of the unsaturated nitrile, provided that the total amount of the components (A), (B) and (C) is 100 parts by weight, wherein the content of the conjugated diene base rubber in the composition is from 5 to 30% by weight, which composition provides a molded article having improved properties such as chemical resistance, impact resistance, flexural modulus, heat resistance and dimensional stability.

A thermoplastic resin composition affording a delustered shaped article which comprises (A) a rubber-modified copolymer with (B) an epoxy group-containing olefin polymer or an unsaturated carboxylic acid-modified olefin polymer (B').

Composition containing rubber-modified graft copolymer and carboxylic

A thermoplastic resin composition having excellent physical properties such as heat resistance and impact resistance and being improved in resistance to heat decomposition which comprises:

Resin composition comprising unsaturated dicarboxylic acid anhydride

A thermoplastic resin composition excellent in impact resistance and moldability and improved in falling ball impact strength at a weld part which comprises (A) a polycarbonate resin having a reduced viscosity at 25.degree. C. in chloroform of 0.40 to 0.55 and (B) a diene-rubber modified resin comprising 10 to 100% by weight of a graft polymer of a diene rubber chosen from polybutadiene, styrene/butadiene copolymer and butadiene-acrylonitrile copolymer, with an aromatic vinyl compound and at least one of a vinyl cyanide and an alkyl unsaturated carboxylate grafted thereon and 90 to 0% by weight of a copolymer of an aromatic vinyl compound with at least one of a vinyl cyanide and an alkyl unsaturated carboxylate. The diene-rubber modified resin has apparent melt viscosities at 250.degree. C. of 5.times.10.sup.3 to 1.times.10.sup.5 poise at a shear rate of 10.sup.2 sec.sup.-1 and of 1.5.times.10.sup.3 to 1.times.10.sup.4 poise at a shear rate of 10.sup.3 sec.sup.-1, the weight proportion of the components (A) and (B) being from 20:80 to 80:20.

A thermoplastic resin composition improved in weld strength which comprises (A) a polycarbonate resin and (B) a rubber modified copolymer with (C) an epoxy group-containing olefin copolymer.

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Settsu, Japan

Motoichi Yano