Patent ID: 8435382

Claim:
A glyoxalated polyacrylamide polymer composition comprising a glyoxalated polyacrylamide polymer in an amount of from 11.5% to about 30% by weight of said composition, and comprising an aqueous medium, wherein said glyoxalated polyacrylamide polymer is obtained from the reaction between glyoxal and a cationic polyacrylamide base polymer comprising at least about 25% by weight cationic monomer, wherein the cationic polyacrylamide base polymer has a molecular weight ranging from about 3,000 Daltons to about 13,000 Daltons, and wherein the cationic polyacrylamide base polymer comprises from about 70% to about 50%, by weight, acrylamide monomer and from about 30% to about 50%, by weight, cationic monomer copolymerizable with said acrylamide monomer, wherein the glyoxalated polyacrylamide polymer composition has a viscosity of less than about 45 cps, as measured on a Brookfield viscometer using #2 spindle at 60 rpm after 14 days storage at 37° C.