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    • 6. 发明申请
    • RESIN PARTICLES AND PROCESS FOR PRODUCING SAME, ANTIGLARE FILM, LIGHT-DIFFUSING RESIN COMPOSITION, AND EXTERNAL PREPARATION
    • 树脂颗粒及其制造方法,防透膜,增透树脂组合物和外用制剂
    • US20130230733A1
    • 2013-09-05
    • US13819867
    • 2011-09-28
    • Masaaki NakamuraRyosuke HaradaKoichiro Okamoto
    • Masaaki NakamuraRyosuke HaradaKoichiro Okamoto
    • C08F2/14B32B5/16
    • C08F2/14B32B5/16C08F2/26G02B1/04G02B5/0242Y10T428/31786C08L25/14
    • A process for producing resin particles includes a step in which a polymerizable mixture including a polymerizable monomer including at least one of a styrene-based monomer and a (meth)acrylic-based monomer, and a polymerization initiator is absorbed into seed particles in an aqueous medium, without using a dispersant, in the presence of an anionic surfactant not having a polyoxyethylene chain but having an alkyl group; and a step in which the polymerizable monomer is polymerized in an aqueous medium, without using a dispersant, in the presence of an anionic surfactant having a polyoxyethylene chain to thereby obtain resin particles. The resin particles include a resin derived from a polymerizable monomer including at least one of a styrene-based monomer and a (meth)acrylic-based monomer. The proportion by number of particles having a particle diameter in the range of from 80 to 120% of the volume-average particle diameter is 85% or more.
    • 制造树脂粒子的方法包括以下步骤:将包含苯乙烯类单体和(甲基)丙烯酸类单体中的至少一种的聚合性单体和聚合引发剂的聚合性混合物吸收到水溶液 在不使用分散剂的情况下,在不具有聚氧乙烯链但具有烷基的阴离子表面活性剂的存在下, 在不使用分散剂的情况下,在具有聚氧乙烯链的阴离子表面活性剂的存在下,在水性介质中聚合可聚合单体,从而获得树脂颗粒的步骤。 树脂颗粒包括衍生自包含苯乙烯基单体和(甲基)丙烯酸类单体中的至少一种的可聚合单体的树脂。 粒径在体积平均粒径的80〜120%范围内的粒子的比例为85%以上。