| 摘要 |
The object of the present invention is to provide a process for producing high-quality polymer microparticles having uniform particle size of the order of several micrometers to tens of micrometers by inverse suspension polymerization at high productivity while keeping excellent dispersion stability without causing aggregation among particles. The process is one for the production of polymer microparticles by inverse polymerization of a vinyl monomer and is characterized in that the inverse suspension polymerization is conducted dividing at least two steps, that a water-soluble oxidizing agent and a water-soluble reducing agent are used as a polymerization initiator, and that the oil-soluble oxidizing agent is fed after the water-soluble reducing agent is fed.
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