| abstract |
Provided is a water / oil repellent composition which can impart water / oil repellency to the surface of an article without deteriorating the texture of the article, and which is excellent in washing durability and stability, a manufacturing method thereof, and an article treated with the water / oil repellent composition.n n n A copolymer comprising a polymerized unit based on the monomer (a), a polymerized unit based on the monomer (b) and a polymerized unit based on the monomer (c). Monomer (a): a compound represented by (ZY) n X. However, Z is a divalent organic group or a single bond, n is 1 or 2, and X is a polymerizable unsaturated group, such as a C1-C6 perfluoroalkyl group. Monomer (b): (meth) acrylate which does not have Rf group and has a C12-C18 alkyl group. Monomer (c): R f do not have a group, a group not having the monomer (c1) or R f group with a blocked isocyanate, a polymerizable unsaturated group monomer (c2) having two or more. |