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    • 22. 发明申请
    • CONTINUOUS PRODUCTION METHOD FOR PRODUCING POLYMER RESIN PARTICLE
    • 生产聚合物树脂颗粒的连续生产方法
    • US20090036603A1
    • 2009-02-05
    • US12168779
    • 2008-07-07
    • Yasuharu SaitaKazuya IsobeMasashi Mamino
    • Yasuharu SaitaKazuya IsobeMasashi Mamino
    • C08K5/42
    • C08F2/18C08F2/01
    • Disclosed is a method for continuously producing polymer resin particles, including the steps of: introducing a mixed solution of a polymerizable monomer and a chain transfer agent into an aqueous solution of a surface active agent and dispersing a resulting mixture via a mechanical dispersion apparatus to obtain an oil droplet dispersion containing oil droplets exhibiting a median size (D50) of 50 nm-500 μm; feeding the oil droplet dispersion and a solution of a polymerization initiator into a tubular polymerization reactor; polymerizing the polymerizable monomer in the reactor to produce polymer resin particles, wherein the chain transfer agent exhibits a chain transfer constant (Cx) of 1.9-17.1, and the mixed solution of the polymerizable monomer and the polymerization initiator are continuously fed into the reactor and are kept in a plug flow condition in the reactor so as to be polymerized to produce the polymer resin particles.
    • 公开了连续生产聚合物树脂颗粒的方法,包括以下步骤:将可聚合单体和链转移剂的混合溶液引入表面活性剂的水溶液中,并通过机械分散装置分散得到的混合物,得到 含有中值粒径(D50)为50nm-500μm的油滴的油滴分散体; 将油滴分散体和聚合引发剂的溶液进料到管状聚合反应器中; 在反应器中聚合可聚合单体以产生聚合物树脂颗粒,其中链转移剂表现出1.9-17.1的链转移常数(Cx),并将可聚合单体和聚合引发剂的混合溶液连续进料到反应器中, 在反应器中保持活塞流动状态,以便聚合以产生聚合物树脂颗粒。