| 摘要 |
PROBLEM TO BE SOLVED: To provide resin fine particles having a <1μm average particle diameter and a uniform particle diameter distribution (having≤15% CV value) by an emulsion polymerization method. SOLUTION: The method for producing the resin fine particles having the <1μm volume-average particle diameter by emulsifying and dispersing a composition containing at least a monomer (a polymerizable monomer) in an aqueous medium, and emulsion-polymerizing the emulsified and dispersed monomer includes dividedly adding a chain-transferring agent divided to two or more portions after the whole amount of the monomer has been added under polymerization reaction, and the whole amount of the chain-transferring agent is dividedly added until the monomer conversion in the polymerization reaches 10-80%. COPYRIGHT: (C)2009,JPO&INPIT
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