FLUORINATED COPOLYMER, WATER-PROOF AND OIL-PROOF AGENT COMPOSITION, AND THEIR PRODUCTION METHODS

摘要

Disclosed are: a fluorinated copolymer which can exhibit excellent water resistance and oil resistance in spite of having a short perfluoroalkyl group; and a water-proof and oil-proof agent composition comprising the fluorinated copolymer. Specifically disclosed is a water-proof and oil-proof agent composition comprising a fluorinated copolymer (A), wherein the fluorinated copolymer (A) comprises 40 to 98 mass% of a polymerization unit (a') having a perfluoroalkyl group having 1 to 6 carbon atoms, 1 to 50 mass% of a polymerization unit (b') having an alkyleneoxide and 1 to 10 mass% of a polymerization unit (c') derived from a monomer represented by the formula: CH2=C(COOH)-Q-COOH [wherein Q represents an alkylene group having 1 to 4 carbon atoms or the like].