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    PROCESS FOR PREPARING POROUS POLYMER PARTICLES
    1.
    发明申请
    PROCESS FOR PREPARING POROUS POLYMER PARTICLES 有权
    制备多孔聚合物颗粒的方法

    公开(公告)号：US20130165541A1

    公开(公告)日：2013-06-27

    申请号：US13334199

    申请日：2011-12-22

    申请人： Xiqiang Yang ,  James R. Bennett

    发明人： Xiqiang Yang ,  James R. Bennett

    IPC分类号： C08J9/00 ,  C08L67/00 ,  C08L25/08

    CPC分类号： C08J9/0066 ,  C08J9/28 ,  C08J2201/0482 ,  C08J2325/14 ,  C08J2367/00

    摘要： A process for forming polymer particles with aligned pores and controlled narrow particle size distribution, including: a) forming an oil phase by dissolving a polymeric binder in a solvent; b) dispersing the oil phase into a water phase containing a controlled amount of particulate stabilizer and forming an oil-in-water emulsion of controlled narrow dispersed oil phase droplet size distribution; c) freezing the emulsion to freeze solvent in the oil droplets to form frozen solvent domains within the polymeric binder, and also the water in the continuous water phase; and d) removing the frozen solvent from the polymeric binder and the frozen water in the continuous water phase, thereby forming porous polymer particles of controlled narrow particle size distribution and containing directional aligned non-spherical pore structures. Optionally, the porous particles may contain encapsulated functional ingredients.

    摘要翻译： 一种用于形成具有排列孔和受控的窄粒度分布的聚合物颗粒的方法，包括：a）通过将聚合物粘合剂溶解在溶剂中形成油相; b）将油相分散到含有受控量的颗粒稳定剂的水相中并形成受控窄分散油相液滴尺寸分布的水包油乳液; c）冷冻乳液以在油滴中冷冻溶剂，以在聚合物粘合剂内形成冷冻溶剂结构域，以及连续水相中的水; 以及d）从连续水相中的聚合物粘合剂和冷冻水中除去冷冻的溶剂，从而形成受控窄粒度分布的多孔聚合物颗粒并且包含定向排列的非球形孔结构。 任选地，多孔颗粒可以含有包封的功能性成分。

    POROUS PARTICLES WITH IMPROVED FILTERING PERFORMANCE
    2.
    发明申请
    POROUS PARTICLES WITH IMPROVED FILTERING PERFORMANCE 审中-公开
    具有改进过滤性能的多孔颗粒

    公开(公告)号：US20120136080A1

    公开(公告)日：2012-05-31

    申请号：US12956022

    申请日：2010-11-30

    申请人： Xiqiang Yang ,  James R. Bennett

    发明人： Xiqiang Yang ,  James R. Bennett

    IPC分类号： C08J9/28 ,  C08B15/00 ,  C08B37/02 ,  C08B3/00

    CPC分类号： C08J9/28 ,  C08B11/12 ,  C08J2201/05 ,  C08L1/284 ,  C08L1/286 ,  C08L5/02 ,  C08L33/26

    摘要： A method of manufacturing porous polymer particles with improved filterability is described. One or more first water phases are formed comprising an anionic hydrocolloid with a mass-per-charge value of less than 600 and a relatively minor amount, compared to the anionic hydrocolloid, of at least one of a nonionic, cationic, zwitterionic, or weakly anionic water soluble or dispersible polymer, where the weakly anionic water soluble or dispersible polymer has a mass-per-charge value of larger than 600. A water-in-oil emulsion is formed by dispersing the one or more first water phases into an organic phase comprising at least one of either (i) preformed polymer dissolved in an organic solvent or (ii) polymerizable monomers, and homogenizing. A water-in-oil-in-water multiple emulsion is formed by dispersing the water-in-oil emulsion into a second water phase containing a stabilizing agent and homogenizing. The organic solvent is removed to precipitate the preformed polymer, or the polymerizable monomers are polymerized, to obtain a dispersion of porous polymer particles in an external aqueous phase, wherein individual porous particles each comprise a continuous polymer phase and internal pores containing an internal aqueous phase. The dispersion of porous polymer particles is filtered to remove the external aqueous phase. The method enables increased filtration rates of porous polymer particle dispersions containing water in the pores.

    摘要翻译： 描述了制造具有改进的过滤性的多孔聚合物颗粒的方法。 形成一个或多个第一水相，其包含阴离子水胶体，每批电荷值小于600，并且与阴离子水胶体相比，非离子，阳离子，两性离子或弱的至少一种 阴离子水溶性或可分散的聚合物，其中弱阴离子水溶性或可分散聚合物的每次电荷值大于600.通过将一个或多个第一水相分散到有机物中形成油包水乳液 包含（i）预先形成的聚合物溶解在有机溶剂中的至少一种或（ii）可聚合单体，并均化。 通过将油包水乳液分散到含有稳定剂的第二水相中并均化来形成水包油包水多重乳液。 去除有机溶剂以沉淀预制的聚合物，或聚合单体，得到多孔聚合物颗粒在外部水相中的分散体，其中各个多孔颗粒各自包含连续聚合物相和含有内部水相的内孔 。 过滤多孔聚合物颗粒的分散体以除去外部水相。 该方法能够增加在孔中含有水的多孔聚合物颗粒分散体的过滤速率。

    METHOD OF MANUFACTURING WAX-CONTAINING POLYMER PARTICLES
    3.
    发明申请
    METHOD OF MANUFACTURING WAX-CONTAINING POLYMER PARTICLES 审中-公开
    制造含WAX的聚合物颗粒的方法

    公开(公告)号：US20120003581A1

    公开(公告)日：2012-01-05

    申请号：US12826832

    申请日：2010-06-30

    申请人： Xiqiang Yang ,  James R. Bennett

    发明人： Xiqiang Yang ,  James R. Bennett

    IPC分类号： G03G9/087

    CPC分类号： G03G9/08755 ,  G03G9/0804 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797

    摘要： The present invention is directed towards methods of manufacturing wax-containing polymer particles by limited coalescence processes employing aqueous wax dispersions. In one embodiment, an aqueous wax dispersion or emulsion is dispersed in an oil phase comprising a water-immiscible solvent and a polymer to form a transient water-in-oil (W/O) emulsion, and a further aqueous phase containing a particulate stabilizer is then added to the W/O emulsion to induce phase inversion, and the mixture homogenized to form an oil-in-water (O/W) emulsion. The solvent is then removed from the emulsion to form particles containing wax domains inside. In another embodiment, the aqueous wax dispersion is first mixed with the aqueous phase containing the particulate stabilizer, and homogenization is made with the oil phase to form an O/W emulsion, from which wax-containing particles are obtained after solvent removal. In still further embodiments, the aqueous wax dispersion is used in the second water phase of a double emulsion (W1/O/W2) process to form porous polymer particles containing the wax.

    摘要翻译： 本发明涉及通过使用含水蜡分散体的有限聚结方法制造含蜡聚合物颗粒的方法。 在一个实施方案中，水性蜡分散体或乳液分散在包含水不混溶溶剂和聚合物的油相中以形成瞬时油包水（W / O）乳液，以及含有颗粒稳定剂 然后加入到W / O乳液中以诱导相转化，并将混合物均质化以形成水包油（O / W）乳液。 然后将溶剂从乳液中除去以形成含有内部蜡区域的颗粒。 在另一个实施方案中，首先将含水蜡分散体与含有颗粒稳定剂的水相混合，并用油相进行均化以形成O / W乳液，在除去溶剂后从其中获得含蜡颗粒。 在另外的实施方案中，水性蜡分散体用于双乳液（W1 / O / W2）方法的第二水相中以形成含有蜡的多孔聚合物颗粒。

    METHOD OF MAKING POROUS PARTICLES
    4.
    发明申请
    METHOD OF MAKING POROUS PARTICLES 有权
    制造多孔颗粒的方法

    公开(公告)号：US20080268367A1

    公开(公告)日：2008-10-30

    申请号：US11739121

    申请日：2007-04-24

    申请人： Mridula Nair ,  Xiqiang Yang ,  Tamara K. Jones ,  James G. Popowych

    发明人： Mridula Nair ,  Xiqiang Yang ,  Tamara K. Jones ,  James G. Popowych

    IPC分类号： G03G5/00

    CPC分类号： C08J3/14 ,  C08J9/28 ,  C08J2201/05 ,  G03G9/0806 ,  G03G9/0827

    摘要： The present invention is a method for the preparation of porous particles that includes dissolving a polymer material in a first organic solvent and adding a second organic solvent and nonionic organic polymer particles to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer to form a dispersion and the dispersion is homogenized. The first and second organic solvents are evaporated and the product is recovered.

    摘要翻译： 本发明是一种制备多孔颗粒的方法，其包括将聚合物材料溶解在第一有机溶剂中并加入第二有机溶剂和非离子有机聚合物颗粒以形成有机相。 将有机相分散在包含微粒稳定剂的水相中以形成分散体，并将分散体均化。 将第一和第二有机溶剂蒸发并回收产物。

    Color photographic element having improved contrast and compatibility with both dry and conventional processing
    7.
    发明授权
    Color photographic element having improved contrast and compatibility with both dry and conventional processing 失效

    公开(公告)号：US06649332B2

    公开(公告)日：2003-11-18

    申请号：US10135752

    申请日：2002-04-30

    申请人： David T. Southby ,  Xiqiang Yang ,  Benjamin P. Hoag

    发明人： David T. Southby ,  Xiqiang Yang ,  Benjamin P. Hoag

    IPC分类号： G03C730

    CPC分类号： G03C7/30511 ,  G03C7/30558 ,  G03C7/39256 ,  G03C7/407 ,  G03C8/4013

    摘要： A method of processing an imagewise exposed color photographic film, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light sensitive silver halide emulsion and image dye coupler, which method comprises contacting the imagewise exposed color photographic film with an aqueous solution containing a non-blocked developing agent, at a temperature of between 30 to 60° C.; and wherein said film further comprises an incorporated reducing agent, at least one organic silver salt and an amido compound wherein the reducing agent is substantially unreactive in the aqueous color development step described above, but wherein color development of the same imagewise exposed film is capable of being alternatively obtained, without any externally applied developing agent, by heating said film to a temperature above about 80° C. essentially in the absence of aqueous solutions, such that the incorporated reducing agent reacts to form dye by reacting with the image dye couplers; with the proviso that the amido compound effectively reduces contrast when the film is heated above 80° C. but does not substantially reduce contrast when the film is processed by contacting the imagewise exposed color photographic film with a non-blocked developing agent under aqueous conditions, at a temperature of between 30 to 60° C.

    METHOD FOR PREPARING MULTIPLE EMULSION AND POROUS POLYMER PARTICLES THEREFROM
    9.
    发明申请
    METHOD FOR PREPARING MULTIPLE EMULSION AND POROUS POLYMER PARTICLES THEREFROM 有权
    制备多种乳液和多孔聚合物颗粒的方法

    公开(公告)号：US20110136059A1

    公开(公告)日：2011-06-09

    申请号：US12630214

    申请日：2009-12-03

    申请人： Xiqiang Yang

    发明人： Xiqiang Yang

    IPC分类号： G03G9/08

    CPC分类号： G03G9/0804 ,  G03G9/08722 ,  G03G9/08724 ,  G03G9/08775 ,  G03G9/08777 ,  G03G9/09725

    摘要： A method of manufacturing a double emulsion with narrow dispersed phase particle size distribution comprising: providing an organic phase comprising solid hydrocolloid particles dispersed in an organic solvent; and dispersing the organic phase in an aqueous phase in the presence of a controlled amount of stabilizing agent to form an emulsion of droplets of the organic phase dispersed in the external aqueous phase, wherein the hydrocolloid particles in the organic phase droplets are swelled with water from the external aqueous phase to form internal droplets of an aqueous phase in the organic phase droplets, thereby forming a double emulsion comprising droplets of the organic phase of controlled narrow particle size distribution in the external aqueous phase, where the organic phase droplets contain internal droplets of an aqueous phase. A method for producing porous polymeric particles by such a double emulsion method, wherein the organic phase further comprises a polymer resin, and wherein the organic solvent is removed from the dispersed organic phase droplets to form porous toner particles.

    摘要翻译： 一种制备具有窄分散相粒度分布的双重乳液的方法，包括：提供包含分散在有机溶剂中的固体水胶体颗粒的有机相; 并在有控制量的稳定剂的存在下将有机相分散在水相中以形成分散在外部水相中的有机相液滴的乳液，其中有机相液滴中的水解胶体颗粒用水膨胀 外部水相以在有机相液滴中形成水相的内部液滴，从而形成双重乳液，其包含外部水相中受控窄粒度分布的有机相的液滴，其中有机相液滴含有内部液滴 水相。 通过这种双重乳液法制备多孔聚合物颗粒的方法，其中有机相还包含聚合物树脂，并且其中有机溶剂从分散的有机相液滴中除去以形成多孔调色剂颗粒。

    Toner particles of controlled morphology
    10.
    发明授权
    Toner particles of controlled morphology 失效
    受控形态的调色剂颗粒

    公开(公告)号：US07655375B2

    公开(公告)日：2010-02-02

    申请号：US11611226

    申请日：2006-12-15

    申请人： Xiqiang Yang ,  Dinesh Tyagi ,  Lloyd A. Lobo ,  Patrick M. Lambert ,  Sandra G. Taft

    发明人： Xiqiang Yang ,  Dinesh Tyagi ,  Lloyd A. Lobo ,  Patrick M. Lambert ,  Sandra G. Taft

    IPC分类号： G03G5/00

    CPC分类号： G03G9/0804 ,  G03G9/0827

    摘要： The present invention is a method for the preparation of electrostatographic toner including the following steps. A polymer material is dissolved in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer and a salt including an anion selected from chloride, oxychloride, sulfate, perchlorate, nitrate, dihydrogen phosphate, lactate, trifluoromethylsulfonate, and trifluromethylhydrate and a cation selected from aluminum, iron (III), tin (II) and zirconium (IV), to form a dispersion. The dispersion is homogenized. The organic solvent is evaporated from the dispersion and the resultant product is recovered, washed and dried. In an alternate method the salt is added directly to the dispersion.

    摘要翻译： 本发明是一种制备静电色调剂的方法，包括以下步骤。 将聚合物材料溶解在有机溶剂中以形成有机相。 有机相分散在水相中，该水相包括颗粒稳定剂和包含选自氯化物，氯氧化物，硫酸盐，高氯酸盐，硝酸盐，磷酸二氢盐，乳酸盐，三氟甲磺酸盐和三氟甲基水合物中的阴离子的盐和选自铝，铁（ III），锡（II）和锆（IV），形成分散体。 将分散体均质化。 从分散体中蒸发有机溶剂，回收所得产物，洗涤并干燥。 在另一种方法中，将盐直接加入到分散体中。