Patent ID: 7521503

Claim:
A composition comprising an ethylene copolymer derived from copolymerization of ethylene, about 10 to about 40 weight % of a first alkyl acrylate having from 1 to 4 carbons in the alkyl group, about 15 to about 65 weight % of a second different alkyl acrylate having from 1 to 4 carbons in the alkyl group, and 0 to about 5 weight % of 1,4-butene-dioic acid or its derivative wherein the derivative is an anhydride of the acid or a monoalkyl ester of the acid; the alkyl group in the monoalkyl ester has from 1 to about 6 carbon atoms, or combinations of two or more thereof; and the copolymer has a number average molecular weight (M n ) above 40,000, has a melt index (MI) of from about 3 to about 30 g/10 minutes, and has a polydispersity of from about 2.5 to about 6.