Patent ID: 6818700
Filing Date: 2004-11-16
Classification: C08F,C11D

Abstract:
A hydrophilic polycarboxylic polymer with improved degradability of the following general structure:CORE (A)-[-LABILE BOND(C)-X-POLYCARBOXYLIC CHAIN (B)]n wherein CORE (A) is a biodegradable core selected from the group, consisting of residues of pentaerythritol tetramercaptopropionate, trimethylolpropane trimercagtoacetate, and ethylene glycol dimercartoacetate with the mercaptopropionate or mercantoacetate groups removed, to which are attached polycarboxylic chains (B) via a group (C) having a labile bond which is degradable by alkaline or enzymatic hydrolysis or by oxidative cleavage, X is a bivalent atom, and n is a number from 2 to 10.