Patent ID: 7629426

Claim:
A poly(vinyl alcohol)-based polyelectrolyte copolymer composition having the following formula: wherein: n=greater than or equal to 50 percent m=less than or equal to 50 percent L=non-perfluorinated alkyl or alkylene-ether linkage L′=a bond or alkyl or alkylene-ether linkage 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.