| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing fine polymer particles, by which the fine polymer particles having a low mol.wt., a uniform particle diameter distribution, and two or more local maximum values of mol.wt. can stably be produced. SOLUTION: This method for producing the fine polymer particles includes adding a chain transfer agent to a solvent capable of dissolving a vinyl monomer but substantially incapable of a polymer produced from the vinyl monomer at a stage of vinyl monomer polymerization conversion of 30 to 70% and simultaneously polymerizing the vinyl monomer to obtain the fine polymer particles having two or more local maximum values of mol.wt., and an average particle diameter of 1 to 10μm. COPYRIGHT: (C)2009,JPO&INPIT
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