Abstract:
The present invention provides a resin composition that improves slow crystallization, which is a drawback of polyhydroxyalkanoates, and is excellent in molding processability and productivity. The resin composition is an aliphatic polyester resin composition comprising a polyhydroxyalkanoate (A), an amide bond-containing compound (B), and pentaerythritol (C), wherein the amide bond-containing compound (B) is represented by any one of the following general formulas: R1—C(O)N(R2)2, R1—C(O)NH—(R3)—NHC(O)—R1, R1—NHC(O)NH—(R3)—NHC(O)NH—R1, R1—NHC(O)—R2, R1—NHC(O)—(R3)—C(O)NH—R1, R1—C(O)NH—(R3)—C(O)NH—R1, R1—NHC(O)NH—(R3)—C(O)NH—R1, and R1—NHC(O)NH—(R3)—NHC(O)—R1.
Abstract:
An object is to increase crystallization speed, which is a drawback of polyhydroxyalkanoate, to improve processability in processing such as injection molding or blow molding and increase the speed of processing and is, in addition, to refine the crystal of polyhydroxyalkanoate to suppress a change of mechanical properties with passage of time of a resulting molded article. Disclosed herein is a polyester resin composition containing polyhydroxyalkanoate and pentaerythritol.