Patent ID: 7767760

Claim:
A hot melt adhesive composition comprising: (a) a random copolymer obtained by a high-pressure free radical copolymerization process, said copolymer comprising a copolymer of ethylene and a comonomer selected from the group consisting of maleic anhydride, citraconic anhydride, itaconic anhydride, tetrahydrophthalic anhydride, maleic acid diesters, maleic acid monoesters, citraconic acid diesters, citraconic acid monoesters, itaconic acid diesters, itaconic acid monoesters, fumaric acid diesters, fumaric acid monoesters, tetrahydrophthalic acid diesters, tetrahydrophthalic acid monoesters, and mixtures of two or more thereof, wherein the random copolymer is present in an amount from about 5 to about 95 weight % of the combined total amount of (a) and (b); and (b) at least one ethylene copolymer obtained from copolymerization of ethylene with a polar comonomer wherein i) said polar comonomer is present in the copolymer in an amount of from 8 to 40 weight %, ii) said ethylene copolymer is selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/alkyl acrylate copolymers, ethylene/alkyl methacrylate copolymers, ethylene/alkyl acrylate/carbon monoxide terpolymers and ethylene/alkyl methacrylate/carbon monoxide terpolymers, and iii) said ethylene copolymer is present in an amount from about 5 to about 95 weight % based on the combined total amount of (a) and (b); wherein the composition has a melt index of 100 grams/10 minutes or higher.