GRAFT COPOLYMER HAVING ACTION OF STABILIZING DISPERSION, ITS PRODUCTION AND EMULSION POLYMERIZATION USING SAME AS DISPERSION STABILIZER

摘要

PURPOSE:To obtain the title copolymer which can permit emulsion polymerization in excellent dispersion stability to give a dispersion of particles of a large particle diameter, by polymerizing a macromonomer having a radical- polymerizing unsaturated group on one end with a fluorine-containing compound and a radical-polymerizable unsaturated group-containing hydrophilic compound. CONSTITUTION:5-30wt% macromonomer (A) of an MW of 1,000-100,000, having a radical-polymerizable unsaturated group on one end, is radical- copolymerized with 5-40wt% fluorine-containing compound (B) having a radical- polymerizable unsaturated group [e.g., an unsaturated carboxylic acid (ester) having a fluorinated alkyl or alkylene group], 1-40wt% hydrophilic compound (C) having a radical-polymerizable unsaturated group [e.g., an unsaturated (di)carboxylic acid (monoalkyl ester)] and, optionally, at most 40wt% (based on the entire monomer) other copolymerizable compounds (D) (e.g., styrene) to obtain the titled copolymer of an average MW=5,000.