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    • 3. 发明授权
    • Fine spherical polymer particles and process for the preparation thereof
    • 细球形聚合物颗粒及其制备方法
    • US4360611A
    • 1982-11-23
    • US199207
    • 1980-10-21
    • Saburo WakimotoSadayasu MiyaharaYoshihiko Hyosu
    • Saburo WakimotoSadayasu MiyaharaYoshihiko Hyosu
    • C08F2/00C08F2/18C08F2/20C08F2/44C08F291/00C08K9/02
    • C08F2/18Y10S526/91
    • A suspension polymerization of polymerizable monomers containing a prepolymer is conducted in a system containing an inorganic dispersion stabilizer and occasionally, an inorganic pigment and/or black coloring agent, in which the polymerizable monomers have an opposite charge in water to the inorganic dispersion stabilizer whereby the former is ionically bound with the latter. The suspension polymerization during the middle stage in which polymer particles are apt to stick together is stabilized and the polymer particles are prevented from coalescing so that fine spherical polymer particles are obtained with a uniform particle size distribution.Also, the suspension polymerization is conducted having liquid resins involved in polymerizable monomers thereby to obtain non-sticky, free flowing particles. These particles adhere to paper sheets by mechanically smashing.
    • 含有预聚物的可聚合单体的悬浮聚合在含有无机分散稳定剂和有机无机颜料和/或黑色着色剂的体系中进行,其中可聚合单体在水中与无机分散稳定剂具有相反的电荷, 前者与后者离子结合。 在聚合物颗粒易于粘附在一起的中间阶段的悬浮聚合是稳定的,并且防止聚合物颗粒聚结,从而获得具有均匀粒度分布的细小球形聚合物颗粒。 此外,进行具有涉及可聚合单体的液体树脂的悬浮聚合,从而获得不粘的自由流动的颗粒。 这些颗粒通过机械粉碎粘附在纸张上。