Patent ID: 8653188

Claim:
A thermoplastic resin composition comprising: 15 to 85% by mass of aliphatic polyester-based resin (A) comprising the following (AI) and (AII) components, wherein the blending ratio by mass of (AI) and (AII) is (AI)/(AII)=2−30/98−70, and 15 to 85% by mass of styrene-based resin (B) which is at least one selected from the group consisting of the following (BI) and a mixture of (BI) and (BII), where the total amount of components (A) and (B) is 100% by mass, said (AI) being an aliphatic polyester-based resin having a number average molecular weight of 10000 to 200000 and having units formed from an aliphatic diol and/or an alicyclic diol and an aliphatic dicarboxylic acid, including derivatives thereof, and/or an alicyclic dicarboxylic, including derivatives thereof, as repeating units, said (AII) being a polylactic acid-based aliphatic polyester resin having not less than 70 mol % of lactic acid unit content, said (BI) being a graft copolymer obtained by polymerizing vinyl-based monomers (b2) comprising an aromatic vinyl compound and another vinyl compound copolymerizable therewith in the presence of rubber polymer (b1), and said (BII) being a polymer of vinyl-based monomers (b2) wherein said composition has an impact strength of not less than 41 (J) and a bending modulus of not less than 1850 (MPa).