| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an enlarged rubber having a mass average particle diameter of not less than 600 nm with high productivity. SOLUTION: The method for manufacturing an enlarged rubber having a mass average particle diameter of 600 to 3,000 nm comprises mixing a rubber-like polymer latex (A), a condensed acid salt (B) and an acid group-containing copolymer latex (C) to enlarge the rubber-like polymer, wherein with respect to 100 pts.mass of the solid content of the rubber-like polymer latex (A), 0.1 to 10 pts.mass of the condensed acid salt (B) and 0.1 to 10 pts.mass of the acid group-containing copolymer latex (C) are compounded, and the acid group-containing copolymer latex (C) is obtained by polymerizing a monomer mixture containing 5 to 30 mass% of acid group-containing monomers and 95 to 70 mass% of unsaturated carboxylic acid ester monomers in water. COPYRIGHT: (C)2009,JPO&INPIT
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