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    Toner aggregation processes
    1.
    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。

    Toner compositions and processes thereof
    2.
    发明授权
    Toner compositions and processes thereof 失效
    调色剂组合物及其工艺

    公开(公告)号：US5604076A

    公开(公告)日：1997-02-18

    申请号：US595143

    申请日：1996-02-01

    申请人： Raj D. Patel ,  Guerino G. Sacripante ,  Grazyna E. Kmiecik-Lawrynowicz ,  Michael A. Hopper ,  Francisco E. Torres

    发明人： Raj D. Patel ,  Guerino G. Sacripante ,  Grazyna E. Kmiecik-Lawrynowicz ,  Michael A. Hopper ,  Francisco E. Torres

    IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097

    CPC分类号： G03G9/0806

    摘要： A process for the preparation of toner compositions comprising:(i) preparing a latex or emulsion resin comprised of a polyester core encapsulated within a styrene based resin shell by heating said polyester emulsion containing an anionic surfactant with a mixture of monomers of styrene and acrylic acid, and with potassium persulfate, ammonium persulfate, sodium bisulfite, or mixtures thereof;(ii) adding a pigment dispersion, which dispersion is comprised of a pigment, a cationic surfactant, and optionally a charge control agent, followed by the sharing of the resulting blend;(iii) heating the above sheared blend below about the glass transition temperature (Tg) of the resin to form electrostatically bound toner size aggregates with a narrow particle size distribution; and(iv) heating said electrostatically bound aggregates above about the Tg of the resin.

    摘要翻译： 一种制备调色剂组合物的方法，包括：（i）通过将含有阴离子表面活性剂的聚酯乳液与苯乙烯和丙烯酸的单体混合物加热，制备由包封在苯乙烯基树脂壳内的聚酯芯构成的胶乳或乳液树脂 和过硫酸钾，过硫酸铵，亚硫酸氢钠或其混合物; （ii）添加颜料分散体，该分散体由颜料，阳离子表面活性剂和任选的电荷控制剂组成，然后共享所得共混物; （iii）将上述剪切混合物加热至低于树脂的玻璃化转变温度（Tg），以形成具有窄粒度分布的静电结合的调色剂尺寸聚集体; 和（iv）将所述静电结合的聚集体加热到高于树脂的Tg的高度。

    Toner processes
    3.
    发明授权
    Toner processes 有权
    墨粉处理

    公开(公告)号：US06541175B1

    公开(公告)日：2003-04-01

    申请号：US10062129

    申请日：2002-02-04

    申请人： Lu Jiang ,  Walter Mychajlowskij ,  Guerino G. Sacripante ,  Raj D. Patel ,  Michael A. Hopper

    发明人： Lu Jiang ,  Walter Mychajlowskij ,  Guerino G. Sacripante ,  Raj D. Patel ,  Michael A. Hopper

    IPC分类号： G03G908

    CPC分类号： C08J3/215 ,  C08J2367/02 ,  G03G9/0804 ,  G03G9/08755

    摘要： A process involving, for example, providing or generating an emulsion latex comprised of sodio sulfonated polyester resin particles by adding with shearing to the latex a colorant dispersion comprising from about 20 to about 50 percent of a predispersed colorant in water, followed by the addition of an organic or an inorganic acid; heating the resulting mixture at a temperature of from about 45° C. to about 65° C. followed by the addition of an water insoluble metal salt or water insoluble metal oxide thereby releasing metal ions and permitting aggregation and coalescence, resulting in toner particles; and optionally cooling the mixture and isolating the product.

    摘要翻译： 一种方法涉及例如提供或产生由磺基磺化聚酯树脂颗粒组成的乳液胶乳，通过向胶乳中加入着色剂分散体，该着色剂分散体包含约20至约50％的预分散着色剂在水中，随后加入 有机或无机酸; 在约45℃至约65℃的温度下加热所得混合物，然后加入水不溶性金属盐或水不溶性金属氧化物，从而释放金属离子并允许聚集和聚结，导致调色剂颗粒; 并任选地冷却混合物并分离产物。

    Toner processes
    6.
    发明授权
    Toner processes 失效
    墨粉处理

    公开(公告)号：US06627373B1

    公开(公告)日：2003-09-30

    申请号：US10106514

    申请日：2002-03-25

    申请人： Raj D. Patel ,  Michael A. Hopper

    发明人： Raj D. Patel ,  Michael A. Hopper

    IPC分类号： G03G9083

    CPC分类号： G03G9/0804 ,  G03G9/0821 ,  G03G9/0833 ,  G03G9/08782 ,  G03G9/0904

    摘要： An emulsion aggregation process for the preparation of a magnetite toner, and where the magnetite can function as a negatively charged coagulant to facilitate aggregation of a basic cationic latex, a cationic carbon black dispersion and a cationic wax dispersion.

    摘要翻译： 用于制备磁铁矿调色剂的乳液聚集方法，其中磁铁矿可以充当带负电荷的凝结剂以促进碱性阳离子胶乳，阳离子炭黑分散体和阳离子蜡分散体的聚集。