Patent ID: 7803891

Claim:
A styrenic polyelectrolyte copolymer composition having the following formula: wherein: W=a bond, O, NH, S, SO, or SO 2 Y=a bond, alkyl, aromatic, or alkylene-ether linkage of C 1 to C 12 Z=a bond, alkyl, aromatic, or alkylene-ether linkage of C 1 to C 12 n=greater than 50% m=less than 50% A=a sulfonate, phosphonate or carboxylate B=a group capable of cross-linking, selected from the group consisting of hydroxyl; primary, secondary, and tertiary amines; N-methylol acrylamide; isobutoxy methacrylamide; N-methylenebisacrylamide; allyl groups; styryl groups; glycidyl methacrylate; free and blocked isocyanates, melamines, epoxies, carboxylates, α,ω-dihaloalkanes, α,ω-dialdehydes, carboxylic acids, alkoxy silanes, silicones, aziridines, and carbodiimides.