Patent ID: 6171440
Filing Date: 2001-01-09
Classification: C08G,D21C,D21H,Y02W,Y10T

Abstract:
A process for repulping paper comprising:(a) providing paper comprising at least one cationic thermosetting resin comprising the reaction product of(i) at least one polyamide having secondary amine groups made from reactants comprising (.alpha.) at least one polyalkylene polyamine, (.beta.) at least one of succinic acid or an ester or anhydride thereof and (.gamma.) optionally at least one dicarboxylic acid (other than succinic acid) or an ester or anhydride thereof, and(ii) epihalohydrin; and(b) repulping the paper to obtain recycled pulp fibers, wherein the succinic acid or ester or anhydride thereof comprises at least 50 mole % of the total dicarboxylic acids or esters or anhydrides thereof used in making the polyamide.