| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for industrially advantageously and efficiently producing a vinyl resin particle having wrinkles on the surface. SOLUTION: The method for producing a vinyl resin particle having wrinkles on the surface and an average particle diameter of 1-200μm comprises (a) an aqueous dispersion preparation process for dispersing liquid droplets of a vinyl monomer A containing a plasticizer composed of a fatty acid ester into an aqueous medium and preparing an aqueous dispersion and (b) a polymerization process for polymerizing the vinyl monomer A in the aqueous dispersion. In the process (b), a hydrocarbon compound having a solubility parameter of 13.0-15.0(MPa)<SP>1/2</SP>is added to a polymerization reaction system in a state in which the polymerization conversion of the vinyl monomer A is 50-80%. COPYRIGHT: (C)2009,JPO&INPIT |
