Patent ID: 7666940
Filing Date: 2010-02-23
Classification: C08J,D21H

Abstract:
1. Aqueous dispersions consisting essentially of a mixture of: A) salts of perfluoropolyether di-carboxylic derivatives, having formula: wherein wherein the salts are in an amount from 0.05% to 10% by weight of the aqueous dispersions; and B) water-dispersible or water-soluble cationic polymers, having a charge density, defined as number of equivalents per weight unit of dry polymer, higher than 1 meq/g of dry polymer, in an amount from 0.01% to 5% by weight of the aqueous dispersions; and wherein A) and B) are chemically and physically stable in the aqueous dispersions for at least two months at temperatures between 5° C. and 40° C.