Patent ID: 6465566
Filing Date: 2002-10-15
Classification: C08G,C09D,Y10T

Abstract:
A waterborne polyurethane dispersion, comprising:polyurethane particles dispersed in an aqueous medium, said polyurethane comprising: at least one polyfluorooxetane-polyol copolymer repeat unit derived from the reaction of an acidified polyfluoroooxetane oligomer, polymer, or copolymer having an acid end group, derived from a dicarboxylic acid or anhydride thereof having from 2 to about 20 carbon atoms, with a polyol intermediate or with one or more monomers forming said polyol intermediate; and at least one repeat unit derived from a hydroxyl containing carboxylic acid dispersant; said repeat units connected by a urethane linkage derived from at least one polyisocyanate; optionally wherein said polyurethane is chain extended; and optionally wherein said polyurethane is crosslinked.