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32 条记录 (耗时 0.022 秒)

    Charge injection barrier for positive charging organic photoconductor
    2.
    发明授权
    Charge injection barrier for positive charging organic photoconductor 失效

    公开(公告)号：US5556730A

    公开(公告)日：1996-09-17

    申请号：US548348

    申请日：1995-11-01

    申请人： Khe C. Nguyen

    发明人： Khe C. Nguyen

    IPC分类号： G03G5/14 ,  G03G5/147 ,  G03G5/09

    CPC分类号： G03G5/14791 ,  G03G5/14 ,  G03G5/14708

    摘要： In organic photoconductors (OPC's) for electrophotography, a barrier layer is placed on top of the OPC. The barrier may have 2 layers--1, an electron withdrawing layer on top of the OPC; and,--2, an electron donating layer on top of the electron withdrawing layer. The barrier layer comprises: 1. a crosslinked polymer binder; 2. a charge injection prohibiter molecule, and optionally; 3. an electron withdrawing molecule. This formulation has resulted in a long-life OPC with more than 50,000 good cycles at high severity test conditions. The OPC had not only long life during continuous use, but also long shelf life and long on-again/off-again operation life.

    Method for preparing coating compositions containing photoconductive perylene pigments
    3.
    发明授权
    Method for preparing coating compositions containing photoconductive perylene pigments 失效
    用于制备含有光电性聚氨酯颜料的涂料组合物的方法

    公开(公告)号：US5141837A

    公开(公告)日：1992-08-25

    申请号：US485112

    申请日：1990-02-23

    申请人： Khe C. Nguyen ,  William T. Gruenbaum

    发明人： Khe C. Nguyen ,  William T. Gruenbaum

    IPC分类号： G03G5/00 ,  G03G5/06

    CPC分类号： G03G5/0659 ,  G03G5/06 ,  G03G5/0657

    摘要： An electrophotographic coating composition comprising finely-divided photoconductive perylene pigment dispersed in a solvent solution of polymeric binder is prepared by the steps of (1) milling a perylene pigment with milling media comprising inorganic salt and non-conducting particles under shear conditions in the substantial absence of the solvent to provide pigment having a particle size up to 0.2 micrometer, (2) continuing the milling at higher shear at a temperature up to about 50.degree. C., to achieve a perceptible color change of the pigment particles, (3) rapidly reducing the temperature of the milled pigment by at least 10.degree. C., (4) separating the milled pigment from the media and (5) mixing the milled pigment with the solvent solution of polymeric binder to form the coating composition. A very high degree of dispersion of photoconductive perylene pigment in solvent solution of polymeric binder is achieved by this method.

    Systems, Devices, and/or Methods for Power Generation from Water
    4.
    发明申请
    Systems, Devices, and/or Methods for Power Generation from Water 审中-公开
    用于从水发电的系统，设备和/或方法

    公开(公告)号：US20130177823A1

    公开(公告)日：2013-07-11

    申请号：US13433241

    申请日：2012-03-28

    申请人： Khe C. Nguyen ,  Hieu Dinh

    发明人： Khe C. Nguyen ,  Hieu Dinh

    IPC分类号： H01M8/06 ,  H05K13/00 ,  F02B43/10 ,  H01M8/00

    CPC分类号： H01M8/0625 ,  H01M8/065 ,  H01M2008/1095 ,  Y10T29/49002

    摘要： Certain exemplary embodiments provide a system adapted to generate hydrogen, which can comprise a water supply source, hydrogen producing agent, hydrogen collector, hydrogen purifier, a hydrogen outlet, a fuel cell, a storage device for electricity, and an inverter. The inverter can be adapted to convert direct current (“DC”) electrical energy into alternating current (“AC”) electrical energy.

    摘要翻译： 某些示例性实施例提供适于产生氢的系统，其可以包括供水源，制氢剂，氢气收集器，氢气净化器，氢气出口，燃料电池，用于电力的存储设备和逆变器。 逆变器可以将直流（“DC”）电能转换为交流（“AC”）电能。

    SOLID PHASE SYNTHESIZED CARBON NANO FIBER AND TUBE
    5.
    发明申请
    SOLID PHASE SYNTHESIZED CARBON NANO FIBER AND TUBE 审中-公开
    固相合成碳纳米纤维和管

    公开(公告)号：US20100247419A1

    公开(公告)日：2010-09-30

    申请号：US11555363

    申请日：2006-11-01

    申请人： Khe C. Nguyen

    发明人： Khe C. Nguyen

    IPC分类号： D01F9/12 ,  C01B31/02

    CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B32/16 ,  D01F9/12 ,  D01F9/133

    摘要： A carbon nano tube characterized by Bragg diffraction pattern peaks appearing at 2 theta (2θ)=26.5°, 44.5°, 51.8°. A carbon nano fiber is disclosed and characterized by Bragg diffraction pattern peaks appearing 2 theta (2θ)=44.5°, 51.8°. These carbon nano materials can be prepared in a solid phase by combustion and heating of the solid raw materials both with and without a tube control agent. The carbon nano tube growth process can include controlling the length of the tubes.

    摘要翻译： 碳纳米管的特征在于出现在2θ（2θ）= 26.5°，44.5°，51.8°处的布拉格衍射图案峰。 公开了一种碳纳米纤维，其特征在于出现2θ（2θ）= 44.5°，51.8°的布拉格衍射图。 这些碳纳米材料可以通过燃烧和加热具有和不具有管控制剂的固体原料来制备固相。 碳纳米管生长过程可以包括控制管的长度。

    Preparation of permanent color inks from water-soluble colorants using specific phosphonium salts
    6.
    发明授权
    Preparation of permanent color inks from water-soluble colorants using specific phosphonium salts 有权
    使用特定的鏻盐从水溶性着色剂制备永久性彩色油墨

    公开(公告)号：US06248161B1

    公开(公告)日：2001-06-19

    申请号：US09228328

    申请日：1999-01-11

    申请人： Khe C Nguyen ,  Raymond J Adamic ,  Sivapackia Ganapathiappan

    发明人： Khe C Nguyen ,  Raymond J Adamic ,  Sivapackia Ganapathiappan

    IPC分类号： C09D1102

    CPC分类号： C09D11/328

    摘要： Water-fastness in aqueous ink-jet inks containing water-soluble dyes is achieved by using a specific ionic species having a charge opposite to that on the dye molecule. Anionic dyes typically contain sulfonate (or carboxylate) anionic groups. Using at least one specific ionic species of opposite charge, specifically, phosphonium salts, causes the colorant components to “crash” or precipitate out of the water-based ink onto the print medium due to the formation of a suitable charge complex between the ionic parts of the dye and the opposite charge of the counter-ion species. Other positively charged salts, such as quaternary ammonium salts, carbonium salts, iodonium salts, sulfonium salts, and pyrillium salts may be used to improve aqueous dispersion stability and thus printability. Such additional cationic salt partially replaces the phosphonium salt(s). Alternatively, certain surfactants, such as aromatic ethoxylates, polyethylene oxide ethers, or polypropylene oxide ethers may be used to improve print quality.

    摘要翻译： 含有水溶性染料的含水喷墨油墨的耐水性通过使用具有与染料分子上的电荷相反的电荷的特定离子物质来实现。 阴离子染料通常含有磺酸盐（或羧酸盐）阴离子基团。 使用至少一种具有相反电荷，特别是鏻盐的特定离子种类，导致着色剂组分由于在离子部分之间形成合适的电荷复合物而使水基油墨“沉淀”或沉淀到印刷介质上 的染料和相反电荷的抗衡离子物质。 可以使用其它带正电荷的盐，例如季铵盐，碳鎓盐，碘鎓盐，锍盐和吡啶鎓盐，以改善水分散体的稳定性和因此的可印刷性。 这种另外的阳离子盐部分地替代了鏻盐。 或者，可以使用某些表面活性剂，例如芳族乙氧基化物，聚环氧乙烷醚或聚环氧丙烷醚，以改善印刷质量。

    Photoconductor comprising a complex between metal oxide phthalocyanine compounds and hydroxy compounds
    7.
    发明授权
    Photoconductor comprising a complex between metal oxide phthalocyanine compounds and hydroxy compounds 失效
    包含金属氧化物酞菁化合物与羟基化合物之间的络合物的感光体

    公开(公告)号：US5750300A

    公开(公告)日：1998-05-12

    申请号：US634495

    申请日：1996-04-18

    申请人： Khe C. Nguyen

    发明人： Khe C. Nguyen

    IPC分类号： G03G5/05 ,  G03G5/06

    CPC分类号： G03G5/0542 ,  G03G5/0696

    摘要： Embodiments of photoconductors and methods of making photoconductors for electophotography are described, each embodiment comprising a complex between metal oxide phthalocyanine compound(s) and hydroxy compound(s). A metal oxide phthalocyanine pigment exhibits extended photoresponse between 850 nm and 1000 nm when it is milled with a specific hydroxy binder, which preferably includes a modified poly-vinyl butyral binder containing a --CH.sub.2 CH.sub.2 OH unit, a cyclohexanol unit, or another hydroxy unit. Optionally, hydroxy solvents or other hydroxy additives may also be included. Preferably, the pigment is dehydrated or hydroxy-starved before milling with the binder and solvents. The metal oxide phthalocyanine pigments and the hydroxy groups form a complex which extends the photo-response of an OPC to wavelengths beyond about 850 nm, in order to achieve higher xerographic speed with higher resolution.

    摘要翻译： 描述了感光体的实施例和制备用于电摄影的光电导体的方法，每个实施方案包括金属氧化物酞菁化合物和羟基化合物之间的络合物。 当用特定的羟基粘合剂研磨时，金属氧化物酞菁颜料在850nm和1000nm之间表现出延长的光响应，其优选包括含有-CH 2 CH 2 OH单元，环己醇单元或其它羟基单元的改性聚乙烯醇缩丁醛粘合剂。 任选地，也可以包括羟基溶剂或其它羟基添加剂。 优选地，在用粘合剂和溶剂研磨之前，颜料被脱水或羟基饥饿。 金属氧化物酞菁颜料和羟基形成复合物，其将OPC的光响应扩展到超过约850nm的波长，以便以更高的分辨率获得更高的静电复印速度。

    Low-temperature cure polyvinylbutyral as a photoconducter binder
    10.
    发明授权
    Low-temperature cure polyvinylbutyral as a photoconducter binder 失效
    低温固化聚乙烯醇缩丁醛作为光导体粘合剂

    公开(公告)号：US06465142B1

    公开(公告)日：2002-10-15

    申请号：US08974926

    申请日：1997-11-20

    申请人： Khe C. Nguyen ,  Sivapackia Ganapathiappan

    发明人： Khe C. Nguyen ,  Sivapackia Ganapathiappan

    IPC分类号： G03G1502

    CPC分类号： C08F8/04 ,  C08F8/12 ,  C08F16/06

    摘要： Poly(vinyl butyral) compounds of Formula 1 where R1 is alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, or alkyl aralkyl; Z is —OH or —NHR2, where R2 is independently alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, alkyl, aralkyl or R2 is H. x is 60 to 95 mol %, y is 3 to 40 mol %, z is 0 to 20 mol %; and x+y+z is 100 mol %, a process for preparing compounds of Formula I, an intermediate in the synthesis of compounds of Formula I, and a photoconductor for electrophotography containing a compound of Formula I as a binder in the charge generation layer are described. These compounds can be crosslinked in the absence of strong acidic and basic catalyst at relatively low temperatures compared with conventional polyvinyl butyral, show good adhesion to a wide variety of surfaces, and exhibit high photoresponses when used in charge generation layers of photoconductors.

    摘要翻译： 式1的聚（乙烯醇缩丁醛）化合物，其中R 1是烷基，二烷基醚，烷基羰基，环烷基，环烷基烷基，芳基，芳基羰基，烷芳基羰基，芳烷基或烷基芳烷基; Z是-OH或-NHR 2， 二烷基醚，烷基羰基，环烷基，环烷基烷基，芳基，芳基羰基，烷芳基羰基，芳烷基，烷基，芳烷基或R2为Hx为60〜95摩尔％，y为3〜40摩尔％，z为0〜20摩尔 ％; andx + y + z为100摩尔％，制备式I化合物的方法，式I化合物的合成中间体和电荷产生层中含有式I化合物作为粘合剂的电子照相用光电导体 描述。 与常规聚乙烯醇缩丁醛相比，这些化合物在相对较低的温度下，在不存在强酸性和碱性催化剂的情况下可以交联，对各种表面表现出良好的粘附性，并且当用于光电导体的电荷产生层时，这些化合物表现出高光响应。