Patent ID: 6365171
Filing Date: 2002-04-02
Classification: A61K,C08F,Y10S

Abstract:
An amphiphilic network comprising the reaction product of hydrophobic crosslinking agents and hydrophilic monomers, wherein the hydrophobic crosslinking agents are telechelic three-arm polyisobutylenes, having acrylate or methacrylate end caps represented by formula (I); wherein R1 is an isobutylene polymer represented by formula (II): wherein A is a moiety that connects R1 to the acrylate or methacrylate end caps; wherein R2 is hydrogen or a methyl group; wherein x is the degree of polymerization of the isobutylene; and wherein said hydrophilic monomers are derived from an acrylate selected from the group consisting of formulas (III), (IV) and (V): wherein R3 is hydrogen or methyl, R4 is an alkylene group having from about 2 to about 4 carbon atoms, and R5 and R6 may be the same or different and each is hydrogen or an alkyl radical having 1 to about 4 carbon atoms.