Abstract: A resin composition containing a crystal structure of poly(lactic acid), which is obtained by melt-kneading 30 to 99 mass % of poly(lactic acid) and 70 to 1 mass % of a copolymer having a functional group reactive with the poly(lactic acid); a method of producing the same; and moldings.

Abstract: Thermoplastic molding compositions, comprising: A) at least one rubber-free copolymer in which no hydroxyl group, acid group, amino group, or anhydride group is present, based on at least one vinylaromatic monomer (a1) and at least one comonomer (a2), B) at least one rubber-free polymer in which at least one hydroxyl group, acid group, or amidno group is present, C) from 3 to 50% by weight, based on the total weight of the molding composition, of at least one rubber, D) at least one terpolymer, C)obtainable from d1) at least one vinylaromatic monomer, d2) at least one C1-C4-alkyl (meth)acrylate or (meth)acrylonitrile, and d3) from 0.4 to 4% by weight, based on the total weight of the teruolymer, of at least one monomer in which an ??-unsaturatedl anhydride is present, and E) at least one compound having at least two isocyanate groups.