Patent ID: 8410189
Filing Date: 2013-04-02
Classification: A61L,A61P,C08G,C08K,C08L

Abstract:
1. A polymeric composition, comprising an activated polyethylene glycol diacid derivative, and a covalent crosslinking agent; wherein the covalent crosslinking agent is polyethyleneimine having a weight average molecular weight of about 400 to about 2000 Daltons; the molar ratio of activated esters on the polyethylene glycol diacid derivative to primary amines on the polyethyleneimine is within a range of about 0.5:1 to about 1.5:1; and the activated polyethylene glycol diacid derivative is represented by formula I: wherein, independently for each occurrence, R is H; m is 5-10 inclusive; and w is 20 to 120 inclusive.