Patent ID: 9644320
Date: 2017-05-09
CPC Classifications: C08L,D21H

Claim:
1. A cellulose reactive glyoxalated copolymer composition comprising: an aqueous medium containing about 0.25 to about 4 weight %, of a glyoxalated copolymer, based on total weight of the aqueous medium, wherein the glyoxalated copolymer is obtained by reaction in an aqueous reaction medium of a dry weight ratio of glyoxal:cationic copolymer ranging from about 5 to about 40 glyoxal to about 95 to about 60 cationic copolymer; wherein the cationic copolymer has a weight average molecular weight of about 120,000 to about 1 million Daltons based on total weight of the cationic copolymer before glyoxalation; wherein the cationic copolymer comprises about 15 to about 85 weight % diallyldimethylammonium halide monomer and about 85 to about 15 weight % acrylamide monomer, based on total weight of the cationic copolymer before glyoxalation; and wherein a ratio of the weight average molecular weight of the cationic copolymer before glyoxalation to weight % of diallyldimethylammonium halide monomer making up the cationic copolymer before glyoxalation is greater than or equal to 4000 Daltons/weight %.