THERMOPLASTIC POLYCARBONATE RESIN COMPOSITION

摘要

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 DEG 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 DEG C. of 5x103 to 1x105 poise at a shear rate of 102 sec-1 and of 1.5x103 to 1x104 poise at a shear rate of 103 sec-1, the weight proportion of the components (A) and (B) being from 20:80 to 80:20.