RESIN COMPOSITION AND MOLDED ARTICLE

摘要

A resin composition comprising an aromatic polyester having a butylene terephthalate skeleton as the main constituent unit (component A), polylactic acid comprising poly(L-lactic acid) and poly(D-lactic acid) (component B), and a modifier (component C), wherein
the resin composition has (i) a crystal melting peak of stereocomplex-phase polylactic acid at 190°C or higher in differential scanning calorimeter measurement, (ii) a biomass ratio of not less than 50 %, (iii) a notched Izod impact strength of 4 to 15 kJ/m 2 and (iv) a flexural modulus of 2.5 to 6 GPa. The resin composition provides a molded article having excellent impact resistance and stiffness. The resin composition has a biomass ratio of not less than 50 %. The resin composition has a low moisture absorptivity, hydrolysis resistance and high-speed moldability. The resin composition provides a molded article having excellent heat resistance.