Patent ID: 6943211
Filing Date: 2005-09-13
Classification: A61K,A61P

Abstract:
1. A composition comprising a pre-formed, hydrolytically susceptible non-addition polyanionic polymer comprising polymer strands formed from at least one ethylenically unsaturated monomer, wherein the polymer strands are linked by at least one linking moiety comprising a hydrolytically susceptible bond formed with a multidentate compound comprising two or more ethylenically unsaturated moieties, each such moiety being linked to the multidentate compound through a hydrolytically susceptible bond, wherein at least one of which monomers has: i) one or more functional groups that can be titrated with base to form negatively charged functional groups, or ii). one or more precursor groups that are precursors of the functional groups that can be titrated with base; which precursor groups are converted to the functional groups; wherein at least one of the ethylenically unsaturated monomers is according to the formula: wherein: Y is —C(O)OR X is a direct bond; a straight or branched alkylene group having one to six carbon atoms, one or more of which can be replaced by O, S, or N heteroatoms, provided that there is no heteroatom in a position α or β to Y; phenylene; a five or six membered heteroarylene having up to three heteroatoms independently selected from O, S, and N, provided that neither Y or (R R