Patent ID: 7919549

Claim:
A resin composition comprising (A) a biodegradable (3-hydroxyalkanoate) copolymer having a recurring unit represented by the formula (1): [—CHR—CH 2 —CO—O—] (wherein R represents an alkyl group represented by C n H 2n+1 ; and n is an integer of 1 to 15), and 0.1 to 20 parts by weight, based on 100 parts by weight of (A) the biodegradable (3-hydroxyalkanoate) copolymer, of (B) an acrylic modifier having an weight average molecular weight Mw of 500,000 to 10,000,000, wherein the biodegradable (3-hydroxyalkanoate) copolymer (A) has a weight average molecular weight Mw of 300,000 to 3,000,000 and is a poly[(3-hydroxybutyrate)-co-(3-hydroxyhexanoate)] comprising a (3-hydroxybutyrate) recurring unit and a (3-hydroxyhexanoate) recurring unit, and the constituent ratio of the recurring units in the poly[(3-hydroxybutyrate)-co-(3-hydroxyhexanoate)] is represented by (3-hydroxybutyrate) unit/(3-hydroxyhexanoate) unit=99/1 to 80/20 (mol/mol), and the acrylic modifier (B) is a copolymer of predominantly an acrylic ester and a methacrylic ester.