| abstract |
PURPOSE: A polycarbonate resin composition suitable as a bumper of automobile, having improved solvent resistance, rigidity, impact resistance, moldability, appearance, etc., obtained by blending a polycarbonate with specific amounts of a specific polyester ether elastomer and a rubber-like elastic material. n CONSTITUTION: (A) 30W89wt% polycarbonate consisting of a structural unit shown by the formula I (Z is bond or 1W8C alkylene, etc.,; R is H, etc.,; m is 0W4), having 10,000W100,000 viscosity average molecular weight is blended with (B) 10W45wt%, preferably 20W40wt% polyester ether elastomer obtained by subjecting 40W76wt% bifunctional carboxylic acid, 10W24wt% alkylene glycol and 45W5wt% polyalkylene glycol to polycondensation, consisting essentially of an aromatic dicarboxylate unit shown by the formula II (Ar is aromatic hydrocarbon; Z is bifunctional group; n is 1W30), having 0.4W1.5dl/g intrinsic viscosity and (C) 1W25wt%, preferably 5W20wt% rubber-like elastic material (e.g., elastic material of MABS resin). n COPYRIGHT: (C)1987,JPO&Japio |