| 摘要 |
[PROBLEMS] To provide a production process by which a resin powder comprising a radical polymer, having a volume-average primary-particle diameter of 1 to 300 nm, and containing no impurities including surfactants is obtained through a simple procedure without via a multistage reaction. [MEANS FOR SOLVING PROBLEMS] The process, which is for producing a resin powder (J) comprising a radical polymer, is characterized by polymerizing a bifunctional radical-polymerizable monomer (A) with a radical-polymerizable monomer (B) having a functionality of 3 or higher in the presence of 15 to 170 mol% polymerization initiator (C) based on the sum of the monomers (A) and (B).
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