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公开(公告)号：US10725394B1
公开(公告)日：2020-07-28
申请号：US16369206
申请日：2019-03-29
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Shivanthi Easwari Sriskandha , David R. Kurceba , Scott Edward Silver , Melanie Lynn Davis , Cuong Vong
Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; 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 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.
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公开(公告)号：US20150111151A1
公开(公告)日：2015-04-23
申请号：US14057504
申请日：2013-10-18
Applicant: Xerox Corporation
Inventor： David John William Lawton , David R. Kurceba , Edward Graham Zwartz , Daniel McDougall McNeil
IPC: G03G9/08
CPC classification number: G03G9/0827 , G03G9/0802 , G03G9/0804 , G03G9/0819
Abstract: Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. An aggregated particle slurry is further heated in a first heat exchanger, and the heated slurry then flows through a residence time reactor. The slurry, now containing coalesced particles, then flows through a second heat exchanger and is quenched. The recovered coalesced particle slurry is then suitable for washing and drying. No moving parts are needed in this system.
Abstract translation: 公开了从聚集的颗粒浆料连续聚结颗粒的方法。 将聚集的颗粒浆料在第一热交换器中进一步加热，然后加热的浆料流过停留时间反应器。 现在含有聚结颗粒的浆料然后流过第二个热交换器并被淬火。 然后回收的聚结颗粒浆液适于洗涤和干燥。 该系统不需要移动部件。
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公开(公告)号：US20200310274A1
公开(公告)日：2020-10-01
申请号：US16892967
申请日：2020-06-04
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Shivanthi Easwari Sriskandha , David R. Kurceba , Scott Edward Silver , Melanie Lynn Davis , Cuong Vong
Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; 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 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.
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公开(公告)号：US09329508B2
公开(公告)日：2016-05-03
申请号：US13850654
申请日：2013-03-26
Applicant: XEROX CORPORATION
Inventor： David John William Lawton , David R. Kurceba , Frank Ping-Hay Lee , Daniel McDougall McNeil , Santiago Faucher
CPC classification number: G03G9/0825 , G03G9/0804 , G03G9/0827 , G03G9/08711
Abstract: The method of manufacturing toners disclosed herein includes a continuous temperature ramp and coalescence process that involves continuously passing toner slurry, such as an aggregated toner slurry, through at least one heat exchanger before being subjected to a cooling step. The heat exchanger is pressurized, so the temperature of the slurry may be increased above the atmospheric boiling point of water without boiling the water component of the slurry. Because of these higher temperatures, the coalescence step can be completed more quickly than in conventional batch processes. More than two heat exchangers may be connected in the coalescence step, yielding multiple ramping/cooling temperature steps, ability to inject components, or recycling heat from the process to reduce energy consumption.
Abstract translation: 本文公开的制造调色剂的方法包括连续温度斜坡和聚结方法，其包括在进行冷却步骤之前通过至少一个热交换器连续通过调色剂浆料，例如聚集的调色剂浆料。 热交换器被加压，因此浆料的温度可以升高到高于水的大气沸点而不沸腾浆料的水分。 由于这些较高的温度，聚结步骤可以比常规分批方法更快地完成。 在聚结步骤中可以连接两个以上的热交换器，产生多个斜坡/冷却温度步骤，注入组分的能力或回收来自该方法的热量以减少能量消耗。
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公开(公告)号：US09182691B2
公开(公告)日：2015-11-10
申请号：US14057504
申请日：2013-10-18
Applicant: Xerox Corporation
Inventor： David John William Lawton , David R. Kurceba , Edward Graham Zwartz , Daniel McDougall McNeil
IPC: G03G9/08
CPC classification number: G03G9/0827 , G03G9/0802 , G03G9/0804 , G03G9/0819
Abstract: Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. An aggregated particle slurry is further heated in a first heat exchanger, and the heated slurry then flows through a residence time reactor. The slurry, now containing coalesced particles, then flows through a second heat exchanger and is quenched. The recovered coalesced particle slurry is then suitable for washing and drying. No moving parts are needed in this system.
Abstract translation: 公开了从聚集的颗粒浆料连续聚结颗粒的方法。 将聚集的颗粒浆料在第一热交换器中进一步加热，然后加热的浆料流过停留时间反应器。 现在含有聚结颗粒的浆料然后流过第二个热交换器并被淬火。 然后回收的聚结颗粒浆液适于洗涤和干燥。 该系统不需要移动部件。
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Patent Agency Ranking
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
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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公开(公告)号：US20200310268A1
公开(公告)日：2020-10-01
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
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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公开(公告)号：US09639015B2
公开(公告)日：2017-05-02
申请号：US14102319
申请日：2013-12-10
Applicant: XEROX CORPORATION
Inventor： Juan A. Morales-Tirado , David J. W. Lawton , Edward G. Zwartz , Vincenzo G. Marcello , Yolanda E. Maldonado , David R. Kurceba
CPC classification number: G03G9/0825 , G03G9/0804 , G03G9/0827 , G03G9/08711
Abstract: Disclosed is toner particles having controlled and tailorable fusing characteristics. In particular, there is provided toner particles comprising styrene acrylate which have specific shape characteristics that allow for tailorable fusing characteristics without generating a detrimental effect on the blocking characteristics of such toners.
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公开(公告)号：US11579138B2
公开(公告)日：2023-02-14
申请号：US16701312
申请日：2019-12-03
Applicant: Xerox Corporation
Inventor： Richard P. N. Veregin , Kimberly D. Nosella , Rosa M. Duque , Melanie Lynn Davis , David R. Kurceba , Cuong Vong
IPC: G01N33/44 , G01N23/223 , H01J49/10 , C08F2/28 , C08F220/18 , C08F212/36 , C08F220/34
Abstract: A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A=(B−C)/D.
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公开(公告)号：US20160274478A1
公开(公告)日：2016-09-22
申请号：US15171459
申请日：2016-06-02
Applicant: Xerox Corporation
Inventor： David J.W. Lawton , Chieh-Min Cheng , David R. Kurceba , Eric J. Young
CPC classification number: G03G9/0825 , G03G9/0804 , G03G9/0819 , G03G9/08755 , G03G9/08797 , Y10T428/2982
Abstract: Porous resin particles of from about 3 μm to about 25 μm size made in an emulsion aggregation process where coalescence occurs under continuous conditions which enable, for example, more rapid coalescence, are described.
Abstract translation: 描述了在乳液聚集过程中制备的约3μm至约25μm尺寸的多孔树脂颗粒，其中聚合在连续条件下发生，其能够例如更快速的聚结。
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