| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a composite resin particle by which the production process is simple at a low cost and a smaller resin particle than a matrix is uniformly applied or fixed to the surface of the resin particle to be the matrix. SOLUTION: The method for producing the composite resin particle is characterized by a step of dissolving or dispersing a polymer dispersant and a surfactant in an aqueous medium and forming an aqueous dispersion, a step of dissolving a polymerization initiator in a polymerizable monomer and forming an oil-based dispersion, a step of mixing the aqueous dispersion with the oil-based dispersion and forming an emulsion and a step of heating the emulsion, polymerizing the emulsion and applying or fixing the smaller resin particle (B) than the matrix to the surface of the resin particle (A) to be the matrix. The value of a represented by the following formula 1: a=b<SP>1/2</SP>is 0.2-10 and the ratio b of the polymer dispersant to the polymerizable monomer is 0.002-0.1 mol%. COPYRIGHT: (C)2008,JPO&INPIT
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