Sumitomo Naugatuck Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Sumitomo Dow Limited

Sumitomo Naugatick Co., Ltd.

Mikio Hirai

Tomio Yoshida

Yoshiaki Nishikubo

Tsuneo Ochi

Tokuo Tatsuda

Takeyoshi Nishio

Kiyoshi Ogura

Yasutoshi Jagawa

A glass fiber-reinforced thermoplastic resin excellent in providing a balance between processability, tapping strength and heat resistance. The composition comprising (A) 10 to 60% by weight of a terpolymer which comprises N-phenylmaleimide, styrene and acrylonitrile, (B) 5 to 20% by weight of a graft polymer which comprises at least one rubber selected from the group consisting of a conjugated diene rubber, an ethylene-propylene rubber and an ethylene-butylene rubber comprising ethylene and butylene, to which rubber styrene and acrylonitrile are graft polymerized, (C) 10 to 80% by weight of a copolymer which comprises styrene and acrylonitrile, and (D) 5 to 35% by weight of glass fiber, wherein (a) the terpolymer has an intrinsic viscosity of 0.20 dl/g to 0.70 dl/g, (b) the copolymer has an intrinsic viscosity of 0.40 dl/g to 1.00 dl/g, (c) the intrinsic viscosity of terpolymer is equal to or smaller than that of the copolymer, and (d) a styrene content in the copolymer minus a styrene content in the terpolymer is from +20 to -5% by weight.

Glass fiber-reinforced thermoplastic resin composition

Resin of polycarbonate and graft copolymer of unsaturated epoxy monomer

A molding resin composition comprising (A) a saturated polyester resin, (B) a graft copolymer and (C) a rubber-reinforced resin, wherein a weight ratio of the saturated polyester resin (A) to a total weight of the graft copolymer (B) and the rubber-reinforced resin (C) is from 95:5 to 5:95, a weight ratio of the graft copolymer (B) to the rubber-reinforced resin is from 100:0 to 5:95, and the graft copolymer (B) is one prepared by copolymerizing an unsaturated epoxide monomer and at least one monomer selected from the group consisting of aromatic vinyl monomers, cyanated vinyl monomers and alkyl unsaturated carboxylates in the presence of an ethylene-.alpha.-olefin base rubber, which can provide a molded article having improved impact strength, weld strength, stiffness and mold shrinkage factor.

Molding resin composition

A weather resistant thermoplastic resin composition which comprises (A) a graft polymer comprising (A-1) chosen from a copolymer of ethylene and propylene, a terpolymer of ethylene, propylene and a non-conjugated diene, a copolymer of ethylene and vinyl acetate, an alkyl acrylate or methacrylate polymer and a chlorinated polyethylene and (A-2) at least two kinds of monomers chosen from aromatic vinyl compounds, vinyl cyanide compounds and unsaturated carboxylic acid alkyl esters grafted thereon and (B) a terpolymer comprising styrene aromatic compounds, vinyl cyanide compounds and unsaturated carboxylic acid alkyl esters. The weight proportion of the graft polymer (A) and the terpolymer (B) is preferably from 10:90 to 90:10. In particular the amounts of styrene the vinyl cyanide compounds and the unsaturated carboxylic acid alkyl esters in the terpolymer (B) are 3 to 65% by weight, 2 to 35% by weight and 3 to 95% by weight, respectively. The result is an improved in color development, impact resistance and resistance to thermal decomposition.

Weather resistant thermoplastic resin composition

A weather-resistant resin having excellent impact resistance, processability and appearance, which comprises a graft polymer comprising an ethylene/alpha-olefin elastomer and at least one monomeric component chosen from aromatic vinyl monomers, vinyl cyanides and alkyl unsaturated carboxylates grafted thereon, the graft polymer having a material soluble in tetrahydrofuran and n-hexane in a volume ratio of 1:4 in a content of not more than 40% by weight and having a material insoluble in tetrahydrofuran in a content of not more than 60% by weight.

Weather-resistant resin, and its production

Growing community of inventors

Niihama, Japan

Mikio Hirai