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    • 1. 发明授权
    • Semisuspension polymerization processes
    • 半悬浮聚合工艺
    • US5852140A
    • 1998-12-22
    • US37192
    • 1993-03-25
    • Michael K. GeorgesRaj D. Patel
    • Michael K. GeorgesRaj D. Patel
    • C08F2/00C08F2/02C08F2/16C08F4/00
    • C08F2/001C08F4/00
    • Disclosed is a process for the preparation of a polymer which comprises effecting bulk polymerization of a mixture of at least one monomer, a free radical polymerization initiator, and a stable free radical agent until from about 10 to about 50 weight percent of the monomer has been polymerized; optionally adding additional free radical initiator; optionally adding a colorant; dispersing with a high shear mixer the aforementioned partially polymerized mixture in water containing a stabilizing component selected from the group consisting of non-ionic and ionic water soluble polymeric stabilizers to obtain a suspension of particles with an average diameter of from about 0.1 to about 10 microns; polymerizing the resulting suspension to form said polymer.
    • 公开了一种制备聚合物的方法,其包括进行至少一种单体,自由基聚合引发剂和稳定自由基试剂的混合物的本体聚合,直到约10至约50重量%的单体已经 聚合的 任选地加入另外的自由基引发剂; 任选地加入着色剂; 用高剪切混合器将上述部分聚合的混合物在含有选自非离子和离子水溶性聚合物稳定剂的稳定组分的水中分散,以获得平均直径为约0.1至约10微米的颗粒悬浮液 ; 聚合所得悬浮液以形成所述聚合物。