Patent ID: 6444761
Filing Date: 2002-09-03
Classification: A61L,C08F,C09J

Abstract:
A thermoplastic, water-soluble, hot-melt adhesive composition comprising a backbone of a polymer of ethylene oxide and side chains of a grafted nonpolar monomer produced by the melt extrusion of a polymer of ethylene oxide and the nonpolar monomer wherein the nonpolar monomer is selected from styrene and a monomer comprising one or more alkyl groups or cycloalkyl groups and the nonpolar monomer comprise three or more carbon atoms, wherein the graft copolymer of ethylene oxide is formed by the reactive extrusion of a homopolymer of ethylene oxide, 0.1 to 20 weight percent of an nonpolar monomer or a mixture of monomers comprising a nonpolar monomer and 0.1 to about 30 weight percent of a free radical initiator relative to the weight of homopolymer of ethylene oxide.