Water and oil repellent composition, treating method therewith and copolymer

摘要

A water and oil repellent composition consisting essentially of a copolymer comprising the following polymeric units A, B, C and D, and an organic solvent: Polymeric units A: Polymeric units derived from an acrylate containing a polyfluoroalkyl group, and/or a methacrylate containing a polyfluoroalkyl group; Polymeric units B: Polymeric units derived from an acrylate containing a hydrocarbon group, and/or a methacrylate containing a hydrocarbon group; Polymeric units C: Polymeric units derived from an acid anhydride having an unsaturated group; and Polymeric units D: Polymeric units derived from triallyl cyanurate.