利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

64 条记录 (耗时 0.054 秒)

    In-situ method of forming zinc stearate dispersion and use thereof in toners
    21.
    发明授权
    In-situ method of forming zinc stearate dispersion and use thereof in toners 失效

    公开(公告)号：US06664018B2

    公开(公告)日：2003-12-16

    申请号：US10063428

    申请日：2002-04-23

    申请人： Allan K. Chen ,  Tie Hwee Ng ,  Lu Jiang ,  Kimberly D. Nosella ,  Paul J. Gerroir ,  Michael Damato

    发明人： Allan K. Chen ,  Tie Hwee Ng ,  Lu Jiang ,  Kimberly D. Nosella ,  Paul J. Gerroir ,  Michael Damato

    IPC分类号： G03G500

    CPC分类号： G03G9/09791

    摘要： A method of forming an aqueous dispersion of particles of zinc stearate includes the steps of forming a mixture of at least one surfactant and water, heating the mixture to a temperature of from about 40° C. to less than a melting temperature of zinc stearate, adding a metal-containing stearate to the mixture under agitation, adding to the mixture a solution of a zinc salt in water, whereby upon inclusion of both the metal-containing stearate and the zinc salt in the mixture, the zinc salt reacts with the metal-containing stearate to form the particles of zinc stearate, continuing the heating and agitation following completion of the latter of the adding of the solution of zinc salt or the adding of the metal-containing stearate to continue the reaction, and cooling to obtain the aqueous dispersion of particles of zinc stearate. The method forms a stable aqueous dispersion of nanometer sized zinc stearate particles particularly useful in coating toner particles.

    Control of particle growth with complexing agents
    28.
    发明授权
    Control of particle growth with complexing agents 失效
    用络合剂控制颗粒生长

    公开(公告)号：US07358022B2

    公开(公告)日：2008-04-15

    申请号：US11094428

    申请日：2005-03-31

    申请人： Valerie M. Farrugia ,  Allan K. Chen ,  Kimberly Nosella ,  Raj D. Patel ,  Tie Hwee Ng

    发明人： Valerie M. Farrugia ,  Allan K. Chen ,  Kimberly Nosella ,  Raj D. Patel ,  Tie Hwee Ng

    IPC分类号： G03G5/00

    CPC分类号： G03G9/0819 ,  G03G9/0804 ,  G03G9/08755 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/08797

    摘要： A method of making particles suitable for use as toners includes forming a mixture of sulfonated polyester resin, a colorant dispersion and optionally a wax dispersion, homogenizing the mixture, adding a coagulant to the mixture to aggregate the mixture to form aggregated particles, and coalescing the aggregated particles to form coalesced particles. In the method, when a predetermined average particle size is achieved during the aggregation and/or coalescing step, a complexing agent that complexes with ions of the coagulant is added in an amount effective to substantially halt any further particle growth. The complexing agent is believed to halt further growth by complexing with free coagulant ions still in the solution.

    摘要翻译： 制备适合用作调色剂的颗粒的方法包括形成磺化聚酯树脂，着色剂分散体和任选的蜡分散体的混合物，使混合物均化，向混合物中加入凝结剂以将混合物聚集形成凝集颗粒，并将 聚集的颗粒形成聚结的颗粒。 在该方法中，当在聚集和/或聚结步骤期间达到预定平均粒径时，加入与絮凝剂的离子相配合的络合剂，其量可以有效地基本上停止任何其它颗粒生长。 据信络合剂通过与仍在溶液中的游离凝结剂离子络合来停止进一步的生长。