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    Photographic element containing dispersions of high dye-yield couplers having improved photographic activity
    12.
    发明授权
    Photographic element containing dispersions of high dye-yield couplers having improved photographic activity 失效
    包含具有改善的摄影活性的高染料收率成色剂的分散体的照相元件

    公开(公告)号：US5830632A

    公开(公告)日：1998-11-03

    申请号：US741886

    申请日：1996-10-31

    Applicant: Krishnan Chari ,  David Thomas Southby ,  David Hoke

    Inventor： Krishnan Chari ,  David Thomas Southby ,  David Hoke

    IPC: G03C7/305 ,  G03C7/388 ,  G03C1/08 ,  G03C7/26 ,  G03C7/32

    CPC classification number: G03C7/388 ,  G03C7/30576 ,  Y10S430/136 ,  Y10S430/156

    Abstract: Photographic element are described comprising a support bearing a photographic silver halide emulsion layer having associated therewith a micro-precipitated dispersion of a high dye-yield coupler having the formula: COUP--(T).sub.m --L--DYE where COUP is the coupler moiety of the coupler capable of reacting at the coupling position with oxidized color developer to form a first dye, T is one or more timing groups with m=0, 1 or 2, L is a linking group selected from the group consisting of --OC(O)--, --OC(S)--, --SC(O)--, --SC(S)--, or --OC(.dbd.NSO.sub.2 R)--, where R is a substituted or unsubstituted alkyl or aryl group, and DYE is a second dye or precursor thereof comprising an electrically neutral chromophore. The invention also provides a photographic coupler dispersion, a photographic silver halide emulsion, and a process for forming an image in a photographic element in accordance with the invention. The photographic element, coupler dispersion, silver halide emulsion, and imaging process provide improved reactivity and photographic properties.

    Abstract translation: 描述的照相元件包括具有照相卤化银乳剂层的载体，其具有与其相连的具有下式的高染料收率成色剂的微沉淀分散体：COUP-（T）mL-DYE，其中COUP是成色剂的成色剂部分 能够在偶联位置与氧化的显色剂反应形成第一种染料，T是一个或多个m = 0,1或2的时基，L是选自-OC（O） - ，-OC（S） - ， - SC（O） - ， - SC（S） - 或-OC（= NSO 2 R） - ，其中R是取代或未取代的烷基或芳基，DYE是第二种染料或 其前体包含电中性发色团。 本发明还提供了照相成色剂分散体，照相卤化银乳剂，以及根据本发明在照相材料中形成图像的方法。 照相元件，成色剂分散体，卤化银乳剂和成像方法提供改善的反应性和照相性能。

    High activity photographic dispersions with ultra low levels of permanent solvent
    13.
    发明授权
    High activity photographic dispersions with ultra low levels of permanent solvent 失效
    具有超低水平永久溶剂的高活性照相分散体

    公开(公告)号：US5770352A

    公开(公告)日：1998-06-23

    申请号：US634491

    申请日：1996-04-18

    Applicant: Krishnan Chari

    Inventor： Krishnan Chari

    IPC: G03C7/388 ,  G03C7/392 ,  G03C7/25

    CPC classification number: G03C7/388 ,  G03C7/3885 ,  G03C7/39288 ,  Y10S430/136

    Abstract: The invention is accomplished by providing an aqueous dispersion of a photographic coupler by precipitation from a solvent solution by solvent and/or pH shift. A second aqueous dispersion of an activating permanent solvent for the photographic coupler is also provided. The dispersion of activating permanent solvent and photographic coupler are combined to form a combined dispersion with relatively low amounts of coupler solvent which may be then mixed with a gelatin dispersion of silver halide particles to form a photographic emulsion coating composition suitable for casting as a photographic element layer. The coupler is selected to have a logP greater than or equal to about 10 and the activating solvent is selected to have a logP greater than or equal to about 8 and a Tg less than or equal to about -80.degree. C. to provide stable, small size photographically active coupler dispersions without the need for nonionic water soluble polymers and with minimal amount of added solvent. Use of a weight ratio of permanent solvent to coupler within the range of from 0.01:1 to 0.3:1 in accordance with the invention enables thin photographic layers to be coated with good photographic activity.

    Abstract translation: 通过用溶剂和/或pH漂移从溶剂溶液中沉淀提供照相成色剂的水分散体来实现本发明。 还提供了用于照相偶联剂的活化永久性溶剂的第二水性分散体。 将活化永久性溶剂和照相成色剂的分散体结合形成具有相对少量成色剂溶剂的组合分散体，然后可将其与卤化银颗粒的明胶分散体混合以形成适合于作为照相元件浇铸的照相乳剂涂料组合物 层。 选择成色剂的logP大于或等于约10，活化溶剂选择为logP大于或等于约8，Tg小于或等于约-80℃，以提供稳定的， 小尺寸的照相活性成色剂分散体，而不需要非离子水溶性聚合物和最少量的添加溶剂。 根据本发明，使用永久性溶剂与偶联剂的重量比在0.01:1至0.3:1的范围内可使薄照相层具有良好的照相活性。

    Dispersions of epoxy scavengers exhibiting improved raw stock keeping
    14.
    发明授权
    Dispersions of epoxy scavengers exhibiting improved raw stock keeping 失效
    环氧清除剂的分散体表现出改善的原料保存

    公开(公告)号：US5620632A

    公开(公告)日：1997-04-15

    申请号：US427763

    申请日：1995-04-25

    Applicant: Krishnan Chari

    Inventor： Krishnan Chari

    IPC: C07D303/16 ,  C07D303/22 ,  C07D303/34 ,  C07D303/42 ,  C07D303/46 ,  C07D405/12 ,  C07F5/02 ,  C07F9/655 ,  G03C1/005 ,  G03C7/392 ,  B01J13/00 ,  C08K5/524 ,  C09K15/26

    CPC classification number: C07D303/22 ,  C07D303/16 ,  C07D303/34 ,  C07D303/42 ,  C07D303/46 ,  C07D405/12 ,  C07F5/025 ,  C07F9/65502 ,  G03C1/005 ,  G03C7/39268 ,  G03C7/39296 ,  Y10S516/928

    Abstract: A process for preparing a solid particle dispersion of an epoxy compound of the formula SI, ##STR1## wherein R is H, an alkyl group, or an aryl group; L.sub.1 is an alkylene group or an arylene group; L.sub.2 is --O--, --CO--, --S--, --SO.sub.2 --, --PO.sub.2 --, --CO.sub.2 --, --NHCO-- or --NHSO.sub.2 --, wherein L.sub.2 may be orientated in either direction; L.sub.3 is an alkylene group; m is 0 or 1; p is 0 or 1; and X is ##STR2## wherein R' is H or an alkyl or aryl group, with the proviso that where L.sub.2 comprises an ionizable group, X may also be an alkyl group or an aryl group is disclosed. The process comprising the steps of: (a) forming a coarse aqueous slurry of solid particles of said compound; and (b) milling said slurry in the presence of a hydrophobic, photographically inert, liquid second component which has a logP.sub.(calc) greater than about 6.0 for time sufficient to provide particles of the desired average particle size. Solid particle dispersions of the invention exhibit improved raw stock keeping under conditions of elevated temperatures when incorporated in a photographic element.

    Abstract translation: 一种制备式SI的环氧化合物的固体颗粒分散体的方法，其中R是H，烷基或芳基; L1是亚烷基或亚芳基; L 2是-O-，-CO-，-S-，-SO 2 - ， - O 2 - ， - CO 2 - ， - NHCO-或-NHSO 2 - ，其中L2可以沿任一方向取向; L3是亚烷基; m为0或1; p为0或1; 并且X是，其中R'是H或烷基或芳基，条件是其中L2包含可离子化基团，X也可以是烷基或芳基。 该方法包括以下步骤：（a）形成所述化合物的固体颗粒的粗制含水浆料; 和（b）在疏水的，照相惰性的液体第二组分的存在下研磨所述浆料，其中logP（calc）大于约6.0，足以提供所需平均粒径的颗粒。 当结合到照相元件中时，本发明的固体颗粒分散体显示改善的原料保持在高温条件下。

    Color photographic element having improved image stability
    15.
    发明授权
    Color photographic element having improved image stability 失效
    具有改进的图像稳定性的彩色照相元件

    公开(公告)号：US5597685A

    公开(公告)日：1997-01-28

    申请号：US429269

    申请日：1995-04-25

    Applicant: Krishnan Chari ,  Wendell F. Smith, Jr.

    Inventor： Krishnan Chari ,  Wendell F. Smith, Jr.

    IPC: C07D303/16 ,  C07D303/22 ,  C07D303/34 ,  C07D303/42 ,  C07D303/46 ,  C07D405/12 ,  C07F5/02 ,  C07F9/655 ,  G03C1/005 ,  G03C7/392 ,  G03C1/34 ,  G03C7/384

    CPC classification number: C07D303/22 ,  C07D303/16 ,  C07D303/34 ,  C07D303/42 ,  C07D303/46 ,  C07D405/12 ,  C07F5/025 ,  C07F9/65502 ,  G03C1/005 ,  G03C7/39268 ,  G03C7/39296

    Abstract: Color photographic element comprising residual magenta coupler scavenger ionizable epoxy compounds in combination with a specific class of image stabilizers are disclosed. Such elements comprise a support bearing thereon: (a) a photosensitive first layer comprising (i) a silver halide emulsion, (ii) a magenta coupler dispersion, and (iii) an image stabilizer of the following formula STG-A: ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group, an alkenyl phenyl group, an aryl group, a heterocyclic group, an acyl group, a bridged hydrocarbon group, an alkyl sulfonyl group or an aryl sulfonyl group; R.sub.2 represents a group capable of being substituted on the benzene ring; r represents an integer between 0 and 4; and A represents a group of non metal atoms necessary for the formation of a 5 to 8 membered ring together with the nitrogen atom; and (b) a second layer comprising a dispersion of an epoxy compound of the structural formula SI: ##STR2## wherein R is H, an alkyl group, or an aryl group; L.sub.1 is an alkyl group or an aryl group; L.sub.2 is --O--, --CO--, --S--, --SO.sub.2 --, --PO.sub.2 --, --CO.sub.2 --, --NHCO-- or --NHSO.sub.2 --, wherein L.sub.2 may be orientated in either direction; L.sub.3 is an alkyl group; m is 0 or 1; p is 0 or 1; and X is ##STR3## wherein R' is H or an alkyl or aryl group, with the proviso that where L.sub.2 comprises an ionizable group, X may also be an alkyl group or an aryl group. The photographic elements of the invention exhibit inhibited thermal and photochemical yellowing.

    Abstract translation: 公开了包含残留品红成色剂清除剂可离子化环氧化合物与特定类型的图像稳定剂组合的彩色照相元件。 这样的元件包括其上的支撑轴承：（a）光敏第一层，其包含（i）卤化银乳剂，（ii）品红色成色剂分散体，和（iii）下式STG-A的图像稳定剂： STG-A，其中R1表示烷基，环烷基，烯基苯基，芳基，杂环基，酰基，桥连烃基，烷基磺酰基或芳基磺酰基; R2表示能够在苯环上被取代的基团; r表示0〜4的整数。 A表示与氮原子一起形成5至8元环所必需的一组非金属原子; 和（b）包含结构式SI的环氧化合物的分散体的第二层：其中R是H，烷基或芳基; L1是烷基或芳基; L 2是-O-，-CO-，-S-，-SO 2 - ， - O 2 - ， - CO 2 - ， - NHCO-或-NHSO 2 - ，其中L2可以沿任一方向取向; L3是烷基; m为0或1; p为0或1; 并且X是，其中R'是H或烷基或芳基，条件是其中L 2包含可离子化基团，X也可以是烷基或芳基。 本发明的照相元件表现出抑制的热和光化学黄变。

    LIGHT EMITTING DEVICE WITH MICROLENS ARRAY
    19.
    发明申请
    LIGHT EMITTING DEVICE WITH MICROLENS ARRAY 有权
    具有微阵列的发光装置

    公开(公告)号：US20100224313A1

    公开(公告)日：2010-09-09

    申请号：US12785091

    申请日：2010-05-21

    Applicant: Krishnan Chari ,  Charles W. Lander ,  Liang-Sheng Liao ,  Paul D. Yacobucci

    Inventor： Krishnan Chari ,  Charles W. Lander ,  Liang-Sheng Liao ,  Paul D. Yacobucci

    IPC: B32B37/16

    CPC classification number: B29D11/00365 ,  B29D11/00807 ,  G02B3/0006

    Abstract: A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted. Use of microlens arrays formed from relatively high surface energy materials enables matching refractive index of microlens array to that of light-emitting devices substrate or cover through which light is emitted and relatively high elastic modulus providing good scratch resistance.

    Abstract translation: 一种制造微透镜阵列和发光器件的方法，包括：形成具有平均直径小于20微米的密堆积表面腔的第一结构化聚合物膜和相对较低的表面能表面，形成透明的第二结构膜 其上形成有对应于第一结构化膜的空腔的微透镜阵列，其中第二结构化膜包括相对高的表面能材料并具有大于1.45的折射率，并且其中微透镜是随机分布的，将第二结构化膜 具有来自第一结构化聚合物膜的微透镜阵列的膜，以及将第二结构膜附着到发光装置的透明基板或盖。 使用由相对高的表面能材料形成的微透镜阵列使微透镜阵列的折射率能够匹配发光器件的发光器件衬底或覆盖层，通过该发光器件衬底或盖发射光，并且相对较高的弹性模量提供良好的耐刮擦性。

    Photochemically active chiral compounds and compositions containing the same
    20.
    发明授权
    Photochemically active chiral compounds and compositions containing the same 有权
    光化学活性的手性化合物和含有它们的组合物

    公开(公告)号：US07470376B2

    公开(公告)日：2008-12-30

    申请号：US10977110

    申请日：2004-10-29

    Applicant: Thomas R. Welter ,  Krishnan Chari

    Inventor： Thomas R. Welter ,  Krishnan Chari

    IPC: C09K19/54 ,  C09K19/38 ,  C09K19/58 ,  C07D493/10 ,  C07C69/76

    CPC classification number: C09K19/32 ,  C09K19/3477 ,  C09K19/3491 ,  C09K19/586 ,  C09K19/588 ,  C09K2019/327 ,  C09K2019/3408

    Abstract: The present invention relates to a phototunable chiral dopant represented by the following structure: wherein: A, B, C and D are independent divalent groups; X and Z are any independently selected substituent; n is an integer and independently varies from 0 to 3; q is an integer and independently varies from 0 to 5; RNG1 and RNG2 independently represent any ring group; m represents an integer independently varying from 0 to 4; p represents an integer independently varying from 1 to 4; Q independently represents a carbon C—RC, or nitrogen, wherein RC is independently hydrogen or any substituent. The invention also relates to the use of the dopant in a liquid crystalline composition and a display containing the same, as well as a material composition comprising an enantiomeric excess of one enantiomer of the compound.

    Abstract translation: 本发明涉及由以下结构表示的无光可动手性掺杂剂：其中：A，B，C和D是独立的二价基团; X和Z是任意独立选择的取代基; n为整数，独立地为0至3; q为整数，独立地为0至5; RNG1和RNG2独立地表示任何环基团; m表示独立地为0至4的整数; p表示独立地为1至4的整数; Q独立地表示碳C-RC或氮，其中RC独立地是氢或任何取代基。 本发明还涉及在液晶组合物中的掺杂剂的用途以及包含该掺杂剂的显示器，以及包含该化合物的一个对映异构体的对映体过量的材料组合物。

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