POLYCARBONATE POLYMER COMPOSITION HAVING IMPROVED DETERIORATION RESISTANCE, IMPROVED THERMAL STABILITY AND IMPROVED IMPACT RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide an impact-resistant improved thermoplastic aromatic carbonate polymer composition having improved resistance to transesterification or deterioration and improved thermal stability. SOLUTION: This aromatic polycarbonate polymer composition having improved thermal stability comprises an aromatic polycarbonate polymer such as a polycarbonate or a polycarbonate/polyester blend and an impact resistance- improving agent not containing an alkaline substance catalytically deteriorating the polycarbonate. The impact resistance-improving agent has a shell-core structure preferably prepared by an emulsion polymerization process and has a pH of from about 3 to about 8. A preferable emulsifier used for the emulsion polymerization process is an alkylsulfonate salt having a 6-18C alkyl group.