WATER REPELLENT COMPOSITION AND PROCESS FOR PRODUCING MOISTURE PERMEABLE WATERPROOF FILM COATED ARTICLE
Abstract:
To provide a water repellent composition whereby a moisture permeable waterproof film is rendered less likely to be peeled from an article treated by the water-repellent composition. The water repellent composition comprises a copolymer (A) having structural units based on a monomer (a) and structural units based on a monomer (b), a polymer (B) having an amino group, an ammonium salt group or an amide group as a pendant group, and an aqueous medium. The monomer (a) is a compound represented by RF-Q-Z—C(O)C(R)═CH2 (wherein RF is a C4-6 perfluoroalkyl group, Q is either a divalent hydrocarbon group containing no fluorine atom or a single bond, Z is —O— or NH—, and R is a hydrogen atom, a methyl group or a chlorine atom).The monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having a C12-22 alkyl group.
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