Processes for encapsulated toners
    59.
    发明授权
    Processes for encapsulated toners 失效
    封装调色剂的方法

    公开(公告)号:US5153092A

    公开(公告)日:1992-10-06

    申请号:US646914

    申请日:1991-01-28

    IPC分类号: G03G9/08 G03G9/087 G03G9/093

    摘要: A process for the preparation of encapsulated toners which comprises blending core momomer or monomers, free radical initiator, pigment, and an oil soluble shell monomer; dispersing the resulting mixture in a stabilized aqueous suspension; thereafter subjecting the stabilized droplets to a shell forming interfacial polycondensation reaction by adding a water soluble shell monomer or monomers; subsequently forming the core resin binder by heat induced free radical polymerization within the newly formed capsules; washing the toner suspension; subsequently removing water therefrom in a fluidized bed dryer to obtain a dry encapsulated toner with a surface moisture content of about 0.3 percent by weight to about 0.8 percent by weight; and thereafter blending the encapsulated toner with surface additives.

    摘要翻译: 一种制备包封的调色剂的方法,包括混合核心单体或单体,自由基引发剂,颜料和油溶性壳单体; 将所得混合物分散在稳定的水性悬浮液中; 然后通过加入水溶性壳单体或单体使稳定的液滴经壳形成界面缩聚反应; 随后在新形成的胶囊内通过热诱导的自由基聚合形成核心树脂粘合剂; 清洗调色剂悬浮液; 随后在流化床干燥器中从其中除去水,得到表面含水量为约0.3重量%至约0.8重量%的干燥包封调色剂; 然后将包封的调色剂与表面添加剂混合。