Patent ID: 6818717
Filing Date: 2004-11-16
Classification: C08F,Y10T

Abstract:
A method to impart oil and grease resistance to paper, which comprises incorporating into the paper an amount of a copolymer ofa) 45-90% by weight of a perfluoroalkyl-substituted (meth)acrylate or (meth)acrylamide, b) 5-30% by weight of a secondary or tertiary amino or quaternary ammonium group-containing (meth)acrylate or (meth)acrylamide, c) 1-20% by weight of vinylidene chloride, and, optionally, d) 0-10% by weight of a copolymerizable nonfluorinated vinyl monomer that is effective to impart oil and grease resistance to the paper.