Patent ID: 7514503

Claim:
A molded article obtained from an aliphatic polyester resin composition comprising 60 to 99.9 parts by weight of at least one polylactic acid resin (A) and 0.1 to 40 parts by weight of at least one elastic polymer (B), provided that the total amount of the components (A) and (B) is 100 parts by weight, wherein the aliphatic polyester component in the molded article has an enthalpy of crystal fusion ΔH determined using a differential scanning calorimeter of 5 J/g or more, wherein the elastic polymer (B) is selected from the group consisting of (i) an olefin polymer modified by a compound having one or more polar groups selected from the group consisting of an amino group, an imino group, a hydroxyl group, an epoxy group, a carboxyl group, and an acid anhydride group, (ii) a conjugated diene polymer modified by a compound having one or more polar groups selected from the group consisting of an amino group, an imino group, a hydroxyl group, an epoxy group, a carboxyl group, and an acid anhyride group, and (iii) a mixture of the modified olefin polymer (i) and the modified conjugated diene polymer (ii) and wherein the molded article has a continuous phase composed of the aliphatic polyester (A) and dispersed phases composed of the elastic polymer (B), and the distance τ between the walls of the dispersed phases is less than 5.0 μm.