PROBLEM TO BE SOLVED: To provide new composite fine particles providing excellent characteristics that conventional ones never have.SOLUTION: The fine particles are synthesized by a procedure comprising: a step of preparing a reaction liquid by mixing a spherical silicon fine particle dispersion liquid, a solvent, a polymerizable monomer having an unsaturated group, a polymerization initiator and a dispersion stabilizer containing at least a water-soluble polymer a step of bringing the reaction liquid into droplets and a step of polymerizing the droplets. It is preferable to use a polyvinyl alcohol as the water-soluble polymer.COPYRIGHT: (C)2013,JPO&INPIT【課題】従来にはない優れた特性が得られる新規複合微粒子を提供する。【解決手段】球状シリコン微粒子分散液、溶媒、不飽和基を有する重合性単量体、重合開始剤、少なくとも水溶性高分子を含む分散安定剤を混合して反応液を調整する工程と、前記反応液を液滴化する工程と、前記液滴を重合する工程、を含む工程によって合成されることを特徴とする複合微粒子。前記水溶性高分子として、ポリビニルアルコールを用いることが好ましい。【選択図】図2
