| 摘要 |
PROBLEM TO BE SOLVED: To provide a polylactic acid-based thermoplastic resin composition excellent in mechanical properties such as impact resistance, heat resistance or the like, by imparting mechanical strength such as practically sufficient impact resistance to a polylactic acid resin.SOLUTION: A polylactic acid-based thermoplastic resin composition includes 10-95 pts.wt. of a polylactic acid resin (A) and 5-90 pts.wt. of a rubber-containing graft copolymer (B) obtained by graft polymerization of a vinyl cyanide-based monomer and an aromatic vinyl-based monomer with a rubbery polymer having 50-90 wt.% gel content, so as to become 100 pts.wt. in total. Further a hard copolymer (C) obtained by copolymerizing a vinyl cyanide-based monomer and an aromatic vinyl-based monomer may be included. The rubber content in the rubber-containing graft copolymer (B) or the rubber content in the total of the rubber-containing graft copolymer (B) and the hard copolymer (C) is 40-80 wt.%. Furthermore another resin (D) such as a polyester-based resin may be blended. |
