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    Pigmented Wax Dispersion And Method For Preparing Same
    15.
    发明申请
    Pigmented Wax Dispersion And Method For Preparing Same 有权
    颜料蜡分散体及其制备方法

    公开(公告)号：US20150299425A1

    公开(公告)日：2015-10-22

    申请号：US14256937

    申请日：2014-04-19

    Applicant: Xerox Corporation

    Inventor： Frank Ping-Hay Lee ,  Aurelian Valeriu Magdalinis ,  Michael J. D'Amato ,  Richard P. N. Veregin ,  David John William Lawton ,  Marcel P. Breton

    IPC: C08K5/3417

    CPC classification number: C08K5/3417 ,  C09D11/322 ,  C09D11/34

    Abstract: A process for preparing a pigmented wax dispersion including (a) melting and mixing a dry pigment with at least one wax to form a pigment concentrate, wherein the pigment concentrate contains at least 25 percent by weight of pigment; (b) milling the pigment concentrate of step (a) to form a milled pigment concentrate; (c) combining the milled pigment concentrate of (b) with water and dispersing to form a pigmented wax dispersion comprising a plurality of pigmented wax particles comprising a pigment core surrounded by a wax shell, wherein the pigmented wax particles exhibit a particle size distribution of from about 150 nanometers to less than about 300 nanometers; wherein the melting and mixing of step (a) and the milling of step (b) is done in an immersion media mill; and wherein the combining of step (c) is done using a piston homogenizer.

    Abstract translation: 一种制备着色蜡分散体的方法，包括（a）将干颜料与至少一种蜡熔融和混合以形成颜料浓缩物，其中所述颜料浓缩物含有至少25重量％的颜料; （b）研磨步骤（a）的颜料浓缩物以形成研磨的颜料浓缩物; （c）将（b）的研磨的颜料浓缩物与水混合并分散以形成着色的蜡分散体，其包含多个着色的蜡颗粒，其包含被蜡壳包围的颜料芯，其中着色的蜡颗粒表现出 从约150纳米到小于约300纳米; 其中步骤（a）的熔融和混合和步骤（b）的研磨在浸渍介质研磨机中进行; 并且其中步骤（c）的组合使用活塞均化器进行。

    Hybrid emulsion aggregate toner
    16.
    发明授权
    Hybrid emulsion aggregate toner 有权
    混合乳液聚集调色剂

    公开(公告)号：US09128395B2

    公开(公告)日：2015-09-08

    申请号：US14161547

    申请日：2014-01-22

    Applicant: XEROX CORPORATION

    Inventor： Kimberly D. Nosella ,  Guerino G. Sacripante ,  Richard P. N. Veregin ,  Edward G. Zwartz ,  David J. W. Lawton

    IPC: G03G9/08 ,  G03G9/087 ,  G03G9/093

    CPC classification number: G03G9/0808 ,  G03G9/0825 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/09321 ,  G03G9/0935 ,  G03G9/09364 ,  G03G9/09371 ,  G03G9/09378 ,  G03G9/09392

    Abstract: Toners and processes useful in providing toners suitable for electrophotographic apparatuses, including apparatuses such as digital, image-on-image, and similar apparatuses. In particular, emulsion aggregate toner compositions that use two different emulsion aggregation (EA) technologies and which comprise a base resin composed of both styrene-acrylate and polyester resins. These toner compositions further include polyaluminum chloride (PAC) instead of the more commonly used aluminum sulfate as the flocculant or aggregating agent.

    Abstract translation: 可用于提供适合于电子照相设备的调色剂的调色剂和方法，包括诸如数字，图像图像和类似设备的设备。 特别是使用两种不同的乳液聚集（EA）技术并且包含由苯乙烯 - 丙烯酸酯和聚酯树脂两者组成的基础树脂的乳液聚集调色剂组合物。 这些调色剂组合物还包括聚氯化铝（PAC）代替更常用的硫酸铝作为絮凝剂或聚集剂。

    Toner compositions and processes having reduced or no titania surface additives
    19.
    发明授权
    Toner compositions and processes having reduced or no titania surface additives 有权

    公开(公告)号：US11150568B2

    公开(公告)日：2021-10-19

    申请号：US16369126

    申请日：2019-03-29

    Applicant: Xerox Corporation

    Inventor： Richard P. N. Veregin ,  Shivanthi Easwari Sriskandha ,  David R. Kurceba ,  Melanie Lynn Davis ,  Cuong Vong

    IPC: G03G9/087 ,  G03G9/08 ,  G03G9/093

    Abstract: A toner including toner particles comprising at least one resin, in combination with an optional colorant, and an optional wax; and a copolymer toner additive on at least a portion of an external surface of the toner particles, the copolymer toner additive comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; and a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; wherein the copolymer toner additive has a volume average particle diameter of from about 20 nanometers to less than about 70 nanometers. An emulsion aggregation toner process including the copolymer as a toner surface additive.

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