COMPATIBILIZING AGENT AND RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a compatibilizing agent affording a resin composition having excellent heat and impact resistances and to provide the resin composition comprising the compatibilizing agent. SOLUTION: The compatibilizing agent is a block polymer of a component A composed of a poly-D lactic acid or a D-lactic acid-starch copolymer resin and a component B composed of a biodegradable resin having a melting point or softening point not higher than the melting point or softening point of the polylactic acid. The resin composition comprises polyL-lactic acid and the compatibilizing agent. The resin composition preferably further contains a cross-linking agent, a crystallization promoter and a softness imparting agent or a compatibilizing agent other than the compatibilizing agent. COPYRIGHT: (C)2007,JPO&INPIT