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177 条记录 (耗时 0.031 秒)

    Protective overcoat for photographic elements
    21.
    发明授权
    Protective overcoat for photographic elements 失效
    摄影元素保护罩

    公开(公告)号：US06077648A

    公开(公告)日：2000-06-20

    申请号：US235436

    申请日：1999-01-22

    申请人： Mridula Nair ,  Tamara K. Jones ,  Lloyd A. Lobo ,  Brian A. Schell

    发明人： Mridula Nair ,  Tamara K. Jones ,  Lloyd A. Lobo ,  Brian A. Schell

    IPC分类号： G03C1/76 ,  G03C1/775 ,  G03C1/79 ,  G03C1/795 ,  G03C11/08 ,  G03C5/29 ,  G03C11/06

    CPC分类号： G03C1/7614 ,  G03C1/76 ,  G03C1/775 ,  G03C1/79 ,  G03C1/795 ,  G03C11/08 ,  Y10S430/162

    摘要： The present invention is a photographic element which includes a support, at least one silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of the urethane in the copolymer comprises from 20 to 100 percent and a weight ratio of the vinyl in the copolymer comprises from 0 to 80 percent. The present invention is a method of making a photographic element which includes providing an photographic element having a support, a silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of the urethane in the polymer comprises from 20 to 100 percent and a weight ratio of the vinyl in the polymer comprises from 0 to 80 percent. The photographic element is developed in a developer solution having a pH greater than 7 and the processing solution permeable overcoat is fused.

    摘要翻译： 本发明是一种照相元件，它包括一个载体，至少一个叠加在载体上的卤化银乳剂层和覆盖在卤化银乳剂层上的处理溶液可渗透的保护外涂层。 加工溶液可渗透的外涂层由具有酸性官能团的氨基甲酸酯 - 乙烯基共聚物组成，其中共聚物中的氨基甲酸酯的重量比为20-100％，共聚物中乙烯基的重量比为0-80％。 本发明是一种制造照相元件的方法，该方法包括提供具有载体的照相元件，叠置在载体上的卤化银乳剂层和覆盖在卤化银乳剂层上的处理溶液可渗透保护外涂层。 处理液可渗透外涂层由具有酸性官能团的聚氨酯 - 乙烯基共聚物组成，其中聚氨酯的重量比为20-100％，聚合物中乙烯基的重量比为0-80％。 照相元件在pH大于7的显影剂溶液中显影，并且处理液可渗透的外涂层被熔合。

    Films for reproducing digitally stored medical diagnostic images and integrating non-image information
    23.
    发明授权
    Films for reproducing digitally stored medical diagnostic images and integrating non-image information 失效
    用于再现数字存储的医学诊断图像并集成非图像信息的影片

    公开(公告)号：US5633126A

    公开(公告)日：1997-05-27

    申请号：US574509

    申请日：1995-12-19

    申请人： Robert E. Dickerson ,  Mridula Nair ,  George L. Oltean ,  Lloyd A. Lobo

    发明人： Robert E. Dickerson ,  Mridula Nair ,  George L. Oltean ,  Lloyd A. Lobo

    IPC分类号： G03C1/035 ,  G03C1/295 ,  G03C1/83 ,  G03C5/14 ,  G03C5/26 ,  G03C1/76 ,  G03C1/005

    CPC分类号： G03C5/14 ,  G03C1/035 ,  G03C1/295 ,  G03C1/832 ,  G03C5/26 ,  Y10S430/145 ,  Y10S430/167

    摘要： A radiation-sensitive silver halide film for reproducing digitally stored medical diagnostic images through a series of laterally offset exposures by a controlled radiation source followed by processing in 90 seconds or less, including development, fixing and drying. The film exhibits an average contrast in the range of from 1.5 to 2.0, measured over a density above fog of from 0.25 to 2.0. An emulsion layer is provided in which silver bromochloride grains (a) comprised of at least 10 mole percent bromide, based on silver, (b) having a mean equivalent circular diameter of less than 0.40 .mu.m, (c) exhibiting an average aspect ratio of less than 1.3, and (d) coated at a silver coverage of less than 40 mg/dm.sup.2. Adsorbed to the surfaces of the silver bromochloride grains at least one spectral sensitizing dye having an absorption half peak bandwidth in the spectral region of exposure by the controlled exposure source. The film contains an infrared opacifying dye that is capable of reducing specular transmission through the film before, during and after processing to less than 50 percent, measured at a wavelength within the spectral region of from 850 to 1100 nm. The film contains a magnetic recording layer which provides a positive b* value influence that is more than offset by the negative b* value influence of the silver bromochloride emulsion, allowing magnetic recording layer integration into the film while achieving favorable image tone and minimum density characteristics.

    摘要翻译： 一种辐射敏感的卤化银膜，用于通过受控辐射源的一系列横向偏移曝光再现数字存储的医学诊断图像，随后在90秒或更短时间内进行处理，包括显影，定影和干燥。 该薄膜的平均对比度在1.5至2.0的范围内，在雾度以上的密度测量为0.25至2.0。 提供一种乳液层，其中由基于银的至少10摩尔％的溴化物组成的溴氯化物颗粒（a），（b）平均当量圆直径小于0.40微米，（c）具有平均纵横比 小于1.3，（d）以小于40mg / dm 2的银覆盖率涂覆。 吸附到溴化银银粒子表面上的至少一种光谱增感染料，其通过受控曝光源在曝光的光谱区域中具有吸收半峰值带宽。 该膜含有一种红外遮光染料，其能够在850至1100nm的光谱区域内的波长处测量，其在处理之前，期间和之后通过膜的镜面透射小于50％。 该膜含有磁记录层，该记录层提供正值b *值的影响，该影响被溴溴氯化银乳剂的负b *值的影响所抵消，从而允许磁记录层一体化到膜中同时获得良好的图像色调和最小密度特性 。

    Solid particle dispersions for imaging systems
    24.
    发明授权
    Solid particle dispersions for imaging systems 失效
    用于成像系统的固体颗粒分散体

    公开(公告)号：US5468598A

    公开(公告)日：1995-11-21

    申请号：US228839

    申请日：1994-04-18

    申请人： David D. Miller ,  Mary C. Brick ,  Mridula Nair

    发明人： David D. Miller ,  Mary C. Brick ,  Mridula Nair

    IPC分类号： C08J3/02 ,  C08J3/03 ,  C09B67/46 ,  G03C1/005 ,  G03C7/388 ,  G03C11/00

    CPC分类号： G03C7/3882 ,  C09B67/0085 ,  G03C1/005

    摘要： A process for preparing a stable, solid particle dispersion of a substantially water-insoluble compound useful in imaging, comprises the steps of:(a) forming a coarse aqueous slurry of solid particles of said compound and a hydrophobic, water-soluble or water-dispersible polymer in an amount of 0.1 to 100% by weight based on the weight of said compound; and(b) milling said slurry for time sufficient to provide particles of the desired average particle size;wherein the polymer is an uncharged or weakly anionically charged water-soluble or water-dispersible homopolymer or copolymer in which at least 10 mole % of the repeat units contain an uncharged pendant group that terminates in (a) a CH.sub.3 unit, (b) a ring containing at least two contiguous CH.sub.2 units, or (c) an aromatic group.The resulting dispersion has dispersed solid particles of said compound having the desired small particle size and is stable toward particle agglomeration, particle growth and needle growth.

    摘要翻译： 制备用于成像的基本上不溶于水的化合物的稳定的固体颗粒分散体的方法包括以下步骤：（a）形成所述化合物的固体颗粒和疏水性，水溶性或水溶性的粗浆状物， 相对于所述化合物的重量，可分散的聚合物的量为0.1〜100重量％ 和（b）将所述浆料研磨足够的时间以提供所需平均粒径的颗粒; 其中所述聚合物是不带电荷或弱阴离子电荷的水溶性或水分散性均聚物或共聚物，其中至少10摩尔％的重复单元含有终止于（a）CH3单元的不带电荷的侧基，（b） 环包含至少两个相邻的CH2单元，或（c）芳族基团。 所得到的分散体具有所需化合物的固体颗粒，其粒径小，对颗粒聚集，颗粒生长和针生长稳定。

    Colloidally stabilized suspension process
    25.
    发明授权
    Colloidally stabilized suspension process 失效
    胶体稳定的悬浮过程

    公开(公告)号：US4965131A

    公开(公告)日：1990-10-23

    申请号：US170519

    申请日：1988-03-21

    申请人： Mridula Nair ,  Zona R. Pierce ,  Donna A. DiPrima

    发明人： Mridula Nair ,  Zona R. Pierce ,  Donna A. DiPrima

    IPC分类号： C08J3/11 ,  G03G9/08 ,  G03G9/087

    CPC分类号： G03G9/0825 ,  G03G9/08795 ,  Y10T428/2991

    摘要： A method of preparing polymer particles having narrow size distribution in a suspension process employing a solid colloidal stabilizing agent. The solid colloidal stabilizer is a copolymer of about 25 to about 80% by weight, based on total monomer weight, of an additional polymerizable nonionic oleophilic monomer, about 5 to about 45%, by weight, of an addition polymerizable nonionic hydrophilic monomer, about 1 to about 50% of an addition polymerizable ionic monomer, and 0 to about 20 percent, by weight, of a crosslinking monomer having at least two addition polymerizable groups. Also disclosed are polymeric particles comprising a core polymer covered by a layer of the smaller copolymer stabilizer particles and electrostatographic toners comprising such polymeric particles.

    Olefin metathesis
    27.
    发明授权
    Olefin metathesis 失效
    烯烃复分解

    公开(公告)号：US4334048A

    公开(公告)日：1982-06-08

    申请号：US267111

    申请日：1981-05-26

    申请人： Thomas J. Katz ,  Mridula Nair ,  Steven J. Lee

    发明人： Thomas J. Katz ,  Mridula Nair ,  Steven J. Lee

    IPC分类号： C08G61/08 ,  C08F4/78

    CPC分类号： C08G61/08

    摘要： A process is described for the polymerization of cyclic olefins by ring-opening employing a coinitiator such as acetylene or substituted acetylenes. The polymers obtained by this method are highly stereoselective.

    摘要翻译： 描述了通过使用共引发剂如乙炔或取代的乙炔通过开环聚合环烯烃的方法。 通过该方法获得的聚合物是高立体选择性的。

    Particles containing organic catalytic materials and uses
    29.
    发明授权
    Particles containing organic catalytic materials and uses 有权
    含有机催化材料和用途的颗粒

    公开(公告)号：US09109221B2

    公开(公告)日：2015-08-18

    申请号：US13686946

    申请日：2012-11-28

    申请人： Mark R. Mis ,  Mridula Nair ,  Douglas R. Robello

    发明人： Mark R. Mis ,  Mridula Nair ,  Douglas R. Robello

    IPC分类号： C12N11/04 ,  C12N11/08 ,  C12N11/14

    CPC分类号： C12N11/04 ,  C12N11/08 ,  C12N11/14

    摘要： Semi-permeable particle can be used to facilitate chemical reactions such as catalytic reactions. The semi-permeable particles are permeable to molecules having a molar mass of 1000 Daltons or less and have a mode particle size of at least 1 μm. The semi-permeable particles have multiple discrete cavities containing an aqueous solution or suspension of an organic catalytic material. The semi-permeable particles are also impermeable to the organic catalytic materials so they are retained within the multiple discrete cavities, and the semi-permeable particles can be reused multiple times for the same or different chemical reaction.

    摘要翻译： 半渗透颗粒可用于促进化学反应，如催化反应。 半透性颗粒对摩尔质量为1000道尔顿或更低的分子是可渗透的，并且模式粒径至少为1μm。 半渗透颗粒具有多个离散腔，其含有有机催化材料的水溶液或悬浮液。 半渗透颗粒对于有机催化材料也是不可渗透的，因此它们被保留在多个分立的空腔内，并且半渗透颗粒可以多次重复用于相同或不同的化学反应。