发明名称 異形樹脂粒子、その製造方法、およびその用途
摘要 The invention provides non-spherical resin particles with a novel shape capable of improving light diffusion, adhesion, oil absorption, and other properties, as well as a manufacturing method and use of the particles. Each non-spherical resin particle includes a concave portion and a convex portion formed in the concave portion, wherein the convex portion has a quasi-spherical surface. The method of manufacturing non-spherical resin particles involves a step of polymerizing 100 parts by weight of a first monomer mixture containing 77 to 99.99 parts by weight of a branched alkyl methacrylate, 0.01 to 3 parts by weight of a polyfunctional monomer, and 0 to 20 parts by weight of a monofunctional (meth)acrylate which is not a branched alkyl methacrylate, in the presence of 0.1 to 0.9 parts by weight of a chain transfer agent and 0 to 100 parts by weight of a (meth)acrylate polymer, to obtain resin particles, and a step of letting the obtained resin particles to absorb a second monomer mixture containing a monofunctional aliphatic monomer and a polyfunctional monomer, and thereafter polymerizing the resin particles, the polyfunctional monomer in the second step being used in an amount of from 5 to 50 wt% to the amount of the monofunctional aliphatic monomer being used.
申请公布号 JP5827331(B2) 申请公布日期 2015.12.02
申请号 JP20130522988 申请日期 2012.06.29
申请人 積水化成品工業株式会社 发明人 中村 真章;原田 良祐
分类号 C08F2/18;C08F2/22;C08F265/04;C09D201/00 主分类号 C08F2/18
代理机构 代理人
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