Patent ID: 8921482
Filing Date: 2014-12-30
Classification: C08F,C08K,C09K,D06M,Y10T

Abstract:
1. A water repellent composition to be used for treatment of a hydrophobic substrate, which comprises a fluorinated copolymer comprising structural units based on the following monomer (a), structural units based on the following monomer (b) and structural units based on the following monomer (c), and a medium, wherein the proportion of the structural units based on the monomer (a) is from 50 to 90 mass % and the proportion of the structural units based on the monomer (b) is from 5 to 30 mass % of the structural units (100 mass %) based on all monomers present in the fluorinated copolymer: monomer (a): a compound represented by formula (1): wherein Z is a C Y is a C n is 1, and X is a group represented by formula (3-3): wherein R is a hydrogen atom, a methyl group or a halogen atom; monomer (b): a (meth)acrylate having no polyfluoroalkyl group and having a C monomer (c): vinyl chloride or vinylidene chloride.