Patent ID: 7381772

Claim:
A poly(lactic acid) composition comprising (i) about 60 to about 99.5 weight % poly(lactic acid), and (ii) about 0.5 to about 40 weight % of an impact modifier comprising an ethylene copolymer derived from copolymerizing: (a) about 20 to about 95 weight % ethylene; (b) about 3 to about 70 weight % of one or more olefins of the formula CH 2 ═C(R 1 )CO 2 R 2 , where R 1 is hydrogen or an alkyl group with 1-8 carbon atoms and R 2 is an alkyl group with 1-8 carbon atoms; and (c) about 0.5 to about 25 weight % of one or more olefins of the formula CH 2 ═C(R 3 )CO 2 R 4 , where R 3 is hydrogen or an alkyl group with 1-6 carbon atoms, and R 4 is glycidyl, wherein the weight % of the poly(lactic acid) and the impact modifier are based on the total weight of the poly(lactic acid) and the impact modifier.