ANTIFOULING COMPOSITION, METHOD FOR ITS PRODUCTION AND ARTICLE TREATED THEREWITH

摘要

Disclosed is a fluorine-containing stain-proofing agent composition using a short chain perfluoroalkyl group, which is excellent in stain-proofing pr operty, water repellency and oil repellency, while exhibiting good durabilit y against washing. Specifically disclosed is a stain-proofing agent composit ion containing a fluorine-containing copolymer which contains 30-65% by mass of a polymerization unit (a) having a perfluoroalkyl group with 1-6 carbon atoms, 1-67% by mass of a polymerization unit (b1) having a -(C2H4O)- group, and 3-34% by mass of a polymerization unit (b2) having a -(C4H8O)- group. I n the fluorine-containing copolymer, the -(C2H4O)- group is contained in an amount of 20-65% by mass and the -(C4H8O)- group is contained in an amount o f 2-13% by mass.