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    Toner aggregation processes
    8.
    发明授权
    Toner aggregation processes 有权
    调色剂聚合过程

    公开(公告)号：US06210853B1

    公开(公告)日：2001-04-03

    申请号：US09657340

    申请日：2000-09-07

    申请人： Raj D. Patel ,  Michael A. Hopper ,  Emily L. Moore ,  Guerino G. Sacripante

    发明人： Raj D. Patel ,  Michael A. Hopper ,  Emily L. Moore ,  Guerino G. Sacripante

    IPC分类号： G03G9087

    CPC分类号： G03G9/08708 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755

    摘要： A process for the preparation of toner including (i) gerating by emulsion polymerization in the presence of an initiator a first resin latex emulsion; (ii) generating by polycondensation a second resin latex optionally in the presence of a catalyst; (iib) dispersing the resin of (ii) in water; (iii) mixing (iib) with a colorant thereby providing a colorant dispersion; (iiib) mixing the resin latex emulsion of (i) with the resin/colorant mixture of (iii) to provide a blend of a resin and colorant; (iv) adding an aqueous inorganic cationic coagulant solution of a polymeric metal salt and optionally an organic cationic coagulant to the resin/colorant blend of (iiib); (v) heating at a temperature of from about 5 to about 10 degrees Centigrade below the resin Tg of (i), to thereby form aggregate particles and which particles are optionally at a pH of from about 2 to about 3.5; (vi) adjusting the pH of (v) to about 6.5 to about 9 by the addition of a base; (vii) heating the aggregate particles of (v) at a temperature of from about 5 to about 50 degrees Centigrade above the Tg of the resin of (i), followed by a reduction of the pH to from about 2.5 to about 5 by the addition of an acid resulting in coalesced toner; (viii) optionally isolating the toner.

    摘要翻译： 一种制备调色剂的方法，包括（i）在引发剂存在下通过乳液聚合第一树脂胶乳乳液; （ii）任选地在催化剂存在下通过缩聚产生第二树脂胶乳; （iib）将（ii）的树脂分散在水中; （iii）将混合（iib）与着色剂混合，从而提供着色剂分散体; （iiib）将（i）的树脂胶乳乳液与（iii）的树脂/着色剂混合物混合以提供树脂和着色剂的共混物; （iv）将聚合金属盐和任选的有机阳离子凝结剂的无机阳离子凝结剂水溶液加入到（iiib）的树脂/着色剂混合物中; （v）在（i）的树脂Tg以下约5至约10摄氏度的温度下加热，从而形成聚集体颗粒，并且哪些颗粒任选处于约2至约3.5的pH值; （vi）通过添加碱将（v）的pH调节至约6.5至约9; （vii）在（i）的树脂的Tg以上约5至约50摄氏度的温度下加热（ⅴ）的聚集体颗粒，随后将pH降低至约2.5至约5 加入导致聚结的调色剂的酸; （viii）任选地分离调色剂。

    Latex processes
    9.
    发明授权
    Latex processes 失效
    乳胶工艺

    公开(公告)号：US06503680B1

    公开(公告)日：2003-01-07

    申请号：US09940926

    申请日：2001-08-29

    申请人： Allan K. Chen ,  George Liebermann ,  Tie Hwee Ng ,  Arthur Helbrecht ,  Emily L. Moore ,  Abdisamed Sheik-qasim ,  Patricia A. Burns ,  Nam S. Ro

    发明人： Allan K. Chen ,  George Liebermann ,  Tie Hwee Ng ,  Arthur Helbrecht ,  Emily L. Moore ,  Abdisamed Sheik-qasim ,  Patricia A. Burns ,  Nam S. Ro

    IPC分类号： G03G9087

    CPC分类号： G03G9/08702 ,  C08F291/00 ,  G03G9/0806 ,  G03G9/081 ,  C08F2/22

    摘要： A process for the preparation of a latex polymer consistent with E/A (emulsion/aggregation/coalescence) toner manufacture. The process utilizes a standard (universal) latex composition and involves chain-transfer agent partitioning, emulsion polymerization that provides a latex polymer with a wide range of molecular properties. In particular, the process customizes a wide range Mw (weight average molecular weight) latex, without substantially varying the Mn (number average molecular weight) and hence, without substantially varying Tg (glass transition temperature) such that good toner performance is maintained. In a preferred process, a latex polymer is prepared by mixing a seed particle latex, generated by aqueous emulsion polymerization of a first portion of a monomer emulsion, with a second portion of the monomer emulsion and at least one chain-transfer agent. The mixing is done in the presence of a free-radical initiator and heated, and wherein the monomer emulsion comprises a mixture of polymerization reagents of at least one monomer, at least one chain-transfer agent, at least one surfactant, and water. This process may be applied to core-shell polymerization as well. These latex polymers are ideally suited in the manufacture of toner and developer for electrophotographic imaging and printing.

    摘要翻译： 制备与E / A（乳液/聚集/聚​​结）调色剂制造一致的胶乳聚合物的方法。 该方法使用标准（通用）胶乳组合物，并涉及链转移剂分配，乳液聚合，其提供具有广泛分子性质的胶乳聚合物。 特别地，该方法定制了宽范围的Mw（重均分子量）胶乳，而基本上不改变Mn（数均分子量），因此没有实质上改变的Tg（玻璃化转变温度），使得维持良好的调色剂性能。 在优选的方法中，通过混合通过单体乳液的第一部分的水乳液聚合产生的种子颗粒胶乳与第二部分单体乳液和至少一种链转移剂来制备胶乳聚合物。 混合在自由基引发剂的存在下进行并加热，其中单体乳液包含至少一种单体，至少一种链转移剂，至少一种表面活性剂和水的聚合试剂的混合物。 该方法也可以应用于核 - 壳聚合。 这些胶乳聚合物非常适用于制造用于电子照相成像和印刷的调色剂和显影剂。

    Solvent-free emulsion process using acoustic mixing
    10.
    发明授权
    Solvent-free emulsion process using acoustic mixing 有权
    无溶剂乳液法使用声学混合

    公开(公告)号：US08435714B2

    公开(公告)日：2013-05-07

    申请号：US12823446

    申请日：2010-06-25

    申请人： Zhen Lai ,  Chieh-Min Cheng ,  Shigang Qiu ,  Emily L. Moore ,  Tie Hwee Ng

    发明人： Zhen Lai ,  Chieh-Min Cheng ,  Shigang Qiu ,  Emily L. Moore ,  Tie Hwee Ng

    IPC分类号： G03G9/08

    CPC分类号： C08J3/12 ,  C08J3/05 ,  C08J2367/06 ,  G03G9/0804 ,  G03G9/081 ,  G03G9/0819 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797

    摘要： A process for making toner particles is provided. In embodiments, a suitable process includes melt mixing a resin in the absence of an organic solvent, optionally adding a surfactant to the resin, adding to the resin at least one colorant and other optional toner additives, adding to the resin a basic agent and water to form a mixture, and subjecting the mixture to acoustic mixing at a suitable frequency to form to form an emulsion. A phase inversion may then be performed to create a phase inversed emulsion including a disperse phase comprising molten resin and the optional ingredients of the toner composition, at which time toner-sized droplets may be solidified from the disperse phase into toner particles, which can be recovered for use.

    摘要翻译： 提供了制备调色剂颗粒的方法。 在实施方案中，合适的方法包括在不存在有机溶剂的情况下熔融混合树脂，任选地向树脂中加入表面活性剂，向树脂中加入至少一种着色剂和其它任选的调色剂添加剂，向树脂中加入碱性试剂和水 以形成混合物，并使混合物以合适的频率进行声学混合以形成乳液。 然后可以进行相转化以产生反相乳液，其包括包含熔融树脂的分散相和调色剂组合物的任选成分，此时调色剂大小的液滴可以从分散相固化成调色剂颗粒，其可以是 恢复使用。