| abstract |
PROBLEM TO BE SOLVED: To provide an aliphatic polyester resin composition capable of improving molding processability by a thickening effect while suppressing excessive crosslinking reaction and exhibiting excellent thermal stability. An aliphatic polyester resin composition contains an acrylic resin modifier (B) at a ratio of 0.15 to 1 part by mass with respect to 100 parts by mass of an aliphatic polyester resin (A). is there. The aliphatic polyester resin (A) is mainly composed of a polymer having lactic acid units, and the content of lactide or lactic acid is less than 0.2% by mass. The acrylic resin modifier (B) has a glass transition temperature (Tg) of 0 ° C. or higher, an average number of epoxy groups per molecule of 3 to 30, and a mass average molecular weight of 1,000 to 1,000. 30,000. As the acrylic resin modifier (B), for example, a copolymer of glycidyl methacrylate and styrene is used. [Selection figure] None |