WATER-REPELLANT/OIL-REPELLANT COMPOSITION, METHOD FOR PRODUCTION THEREOF, AND ARTICLE

摘要

To provide a water/oil repellent composition which can give water/oil repellency to a surface of an article and has excellent durability (wash durability and heavy-rain durability), a method for producing such a composition, and an article which has water/oil repellency and is less susceptible to deterioration of water/oil repellency when it is washed or in heavy rain.
A water/oil repellent composition which comprises a copolymer having polymerized units derived from monomer (a) and polymerized units derived from monomer (b), wherein the proportion of the polymerized units derived from the monomer (b) is 30 to 80 mol% in the total of the polymerized units derived from the monomer (a) and the polymerized units derived from the monomer (b). Monomer (a) is a compound represented by the formula: (Z-Y) n X; wherein Z is a C 1-6 perfluoroalkyl group or the like; Y is a bivalent organic group or the like; n is 1 or 2; and X is a polymerizable unsaturated group; and monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having an C 20-30 alkyl group.