| abstract |
To provide a water/oil repellent composition with which can produce an article which has favorable water/oil repellency and washing durability, and into which infiltration of a coating liquid to form a moisture-permeable waterproofing film or the like can be suppressed, is obtained, and which presents a low environmental impact, its production method and an article having its surface treated with the water/oil repellent composition. n A water/oil repellent composition comprising a copolymer (X) having structural units based on the following monomer (a) and structural units based on the following monomer (b), and an aqueous medium, wherein the mass average molecular weight of the copolymer is at least 60,000, and the proportion of the structural units based on the monomer (a) is from 60 to 95 mass%, is used. Monomer (a): a compound represented by (Z-Y) n X, wherein Z is a C 1-6 polyfluoroalkyl group or the like, Y is a bivalent organic group having no fluorine atom or the like, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): vinyl chloride. |