BIODEGRADABLE RESIN COMPOSITION

摘要

PURPOSE: To obtain a biodegradable resin composition excellent in moldability, mechanical properties and heat resistance by mixing a specified aliphatic polyester with poly-3-hydroxybutyrate. CONSTITUTION: This resin composition comprises an aliphatic polyester prepared from a glycol, an aliphatic dicarboxylic acid or its derivative and poly-3- hydroxybutyrate. It is desirable that the poly-3-hydroxybutyrate has a weight- average molecular weight of 400000 or above. If it has a molecular weight below that, it can not give a satisfatory molding.