Patent ID: 7727359
Filing Date: 2010-06-01
Classification: C08F,C08L,D21H

Abstract:
1. A method for making paper comprising treating a fibrous substrate with a thermosetting resin, and forming the paper, wherein the resin comprises the reaction product of: A) a first partially crosslinked glyoxalated polymer comprising a reaction product of (i) first polyacrylamide backbone and (ii) a first glyoxal component; and B) a second crosslinked glyoxalated polymer comprising a reaction product of (i) second polyacrylamide backbone and (ii) a second glyoxal component; wherein the first polyacrylamide backbone has a molecular weight that is less than the molecular weight of the second polyacrylamide backbone; and wherein the first polyacrylamide backbone and the second polyacrylamide backbone have a weight ratio ranging from 75:25 to 95:5.