POLYCARBONATE RESIN COMPOSITION AND MOLDED ARTICLE

摘要

A polycarbonate resin composition which contains 0.002-0.200 part by mass of (B) a phosphorus antioxidant and 0-0.200 part by mass of (C) an epoxidation stabilizer per 100 parts by mass of (A) an aromatic polycarbonate resin mixture that is composed of 5-100% by mass of (A-1) an aromatic polycarbonate-polyorganosiloxane copolymer and 95-0% by mass of (A-2) an aromatic polycarbonate resin other than the component (A-1) and has a polyorganosiloxane unit content of 1% by mass or more. The decrease rate (P) of the viscosity average molecular weight of this polycarbonate resin composition before and after a pressure-cooker test as determined by calculation formula (I) is 20% or less. This polycarbonate resin composition can be a material for a molded body that is capable of maintaining excellent impact resistance properties at low temperatures for a long period of time even if repeatedly used in a high-temperature high-humidity environment. In addition, this polycarbonate resin composition is not susceptible to discoloration or the like even if retained at high temperatures.