Patent ID: 6379499
Filing Date: 2002-04-30
Classification: D21H

Abstract:
A method of treating paper comprising: contacting said paper with a hydroxy-containing polymer and a multifunctional aldehyde, in the presence of a catalyst wherein the multifunctional aldehyde has formula: where R is a divalent aliphatic, cycloaliphatic, aromatic or heterocyclic group having from 1 to 12 carbon atoms;the multifunctional aldehyde is present at a concentration of about 50% to about 800% weight percent of the polymer present; and the total weight of hydroxy-containing polymer and multifunctional aldehyde is about 0.1% to about 10% based on the dry weight of pulp fibers, provided that the hydroxy-containing polymer is not amine-functionalized and provided that the hydroxy-containing polymer has a viscosity of greater than 20 cps.