| abstract |
Disclosed is an aliphatic polyester resin composition wherein an acrylic resin-based modifier (B) is contained in an amount of 0.15-1 part by mass per 100 parts by mass of an aliphatic polyester resin (A). The aliphatic polyester resin (A) mainly contains a polymer having a lactic acid unit, and the lactide or lactic acid content is less than 0.2% by mass. The acrylic resin-based modifier (B) has a glass transition temperature (Tg) of not less than 0˚C, an average number of epoxy groups per molecule of 3-30, and a mass average molecular weight of 1,000-30,000. For example, a copolymer of glycidyl methacrylate and styrene is used as the acrylic resin-based modifier (B). |