Patent ID: 8609795
Filing Date: 2013-12-17
Classification: C08F,C09K,D06M

Abstract:
1. A water and oil repellent composition, which comprises a copolymer comprising repeating units of the following monomer (a) and repeating units of the following monomer (b), wherein the total content of said repeating units is at least 80 mass % of repeating units of said copolymer: Monomer (a): an ethylenically polymerizable monomer having a perfluoroalkyl group, which forms a homopolymer having no melting point or a melting point of at most 55° C. attributable to fine crystals derived from the perfluoroalkyl group, and having a glass transition point of at least 20° C., Monomer (b): an ethylenically polymerizable monomer having no polyfluoroalkyl group and having a cross-linkable functional group, wherein the monomer (a) is a compound represented by (Z—Y) Z: a perfluoroalkyl group having at most 6 carbon atoms, Y: a bivalent organic group or a single bond, n: 1 or 2, X: a polymerizable unsaturated group, which is —CR═CH wherein the polymerization units of monomer (a) and the polymerization units of monomer (b) are present in a mass ratio of 70.0-99.9 to 0.1-30.0, respectively.