PREPARATION METHOD OF LATEX POLYMER
    9.
    发明专利

    公开(公告)号:JP2003105005A

    公开(公告)日:2003-04-09

    申请号:JP2002248066

    申请日:2002-08-28

    Applicant: XEROX CORP

    Abstract: PROBLEM TO BE SOLVED: To provide a latex polymer meeting an E/A (emulsification agglomeration/unification) toner capable of customizing a latex of a wide Mw range substantially not changing Mn and Tg to keep the performance of good toner. SOLUTION: In a chain transfer agent division emulsion polymerization to manufacture a latex polymer having a wide range of molecular characteristic, the latex polymer is prepared first by preparing a seed particle latex by aqueous emulsion polymerization of a first part of a monomer emulsion liquid, then the seed particle latex is blended with a second part of the monomer emulsion liquid and at least a chain transfer agent. The blending is carried out in the presence of a radical initiator under heating, and the monomer emulsion liquid contains at least a monomer, at least a chain transfer agent, at least a surfactant, and a mixture of polymerization chemical agents in water.

    Polymerization method
    10.
    发明专利
    Polymerization method 有权
    聚合方法

    公开(公告)号:JP2003026705A

    公开(公告)日:2003-01-29

    申请号:JP2002191700

    申请日:2002-07-01

    CPC classification number: G03G9/0806

    Abstract: PROBLEM TO BE SOLVED: To provide a production method of resin for toner particles hardly receiving an influence of a friction charge to a humidity and a temperature.
    SOLUTION: The process for preparing a latex polymer includes (i) an aqueous phase containing an anionic surface active agent in an optional amount of 20% by weight or lower based on a total amount of the anionic surface active agent used for forming the latex polymer is produced or prepared; (ii) an emulsion of a monomer in water containing the anionic surface active agent in the emulsion is produced or prepared; (iii) approximately 50% or lower of the monomer emulsion is added to the aqueous phase, whereby a seed polymerization is started to form a seed polymer and a free radical polymerization initiator is contained in the aqueous phase; (iv) a residual amount of the monomer emulsion is added to the composition of (iii) and the emulsion polymerization is completed by heating to produce the polymer.
    COPYRIGHT: (C)2003,JPO

    Abstract translation: 要解决的问题:提供几乎不受到摩擦电荷对湿度和温度的影响的调色剂颗粒的树脂的制造方法。 解决方案:制备胶乳聚合物的方法包括(i)含有阴离子表面活性剂的水相,其中任选量为20重量%或更低,基于用于形成胶乳聚合物的阴离子表面活性剂的总量 生产或准备; (ii)制备或制备在乳液中含有阴离子表面活性剂的单体在水中的乳液; (iii)将约50%以下的单体乳液加入到水相中,由此开始种子聚合以形成种子聚合物,并且水相中包含自由基聚合引发剂; (iv)将剩余量的单体乳液加入到(iii)的组合物中,通过加热完成乳液聚合以制备聚合物。

Patent Agency Ranking