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21. 发明授权

US5264317A Oxygen barrier coated photographic coupler dispersion particles for enhanced dye-stability 失效
标题翻译：用于增强染料稳定性的隔氧涂层照相胶料分散体颗粒
公开(公告)号：US5264317A
公开(公告)日：1993-11-23
申请号：US974768
申请日：1992-11-12
申请人： Pranab Bagchi , James L. Edwards , Wendell F. Smith, Jr. , Brian Thomas
发明人： Pranab Bagchi , James L. Edwards , Wendell F. Smith, Jr. , Brian Thomas
IPC分类号： G03C1/00 , G03C7/396 , G03C1/04
CPC分类号： G03C7/396 , G03C1/002 , Y10S430/11
摘要： The invention creates a selective oxygen barrier around individual coupler or other photographically active particles by surrounding each particle with a layer of water applicable oxygen barrier polymer such as polyvinyl alcohol (PVA), which will also act as a steric barrier to coalescence of the particles. Photographic products formed with such materials are more dye stable.
摘要翻译：本发明通过用一层适用的氧阻隔聚合物如聚乙烯醇（PVA）包围每个颗粒，在单个成色剂或其它照相活性颗粒周围产生选择性氧气屏障，聚乙烯醇（PVA）也将作为颗粒聚结的空间屏障。用这种材料形成的摄影产品更稳定染料。

22. 发明授权

US5104776A Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids 失效
标题翻译：通过与液体羧酸共沉淀制备的增加的照相活性沉淀成色剂分散体
公开(公告)号：US5104776A
公开(公告)日：1992-04-14
申请号：US442827
申请日：1989-11-29
申请人： Pranab Bagchi , Steven J. Sargeant
发明人： Pranab Bagchi , Steven J. Sargeant
IPC分类号： G03C7/388
CPC分类号： G03C7/388
摘要： Base and auxiliary solvent solubilized precipitated dispersions of couplers and other photographic materials usually produce very small particle dispersions, and usually such dispersions are extremely highly reactive because of the smallness of the particle size. However, some relatively more hydrophobic couplers, even though they produce small particles when a dispersion is formed by the precipitation technique, lead to extremely unreactive dispersions. The method of this invention constitutes a single step coprecipitation technique where a base deprotonation compound, preferably a liquid carboxylic acid, is incorporated into the precipitated particles to produce photographically highly active coupler dispersions. The invention is performed by providing a first flow of an aqueous surfactant solution and a second flow comprising a basic solution of the coupler and the base deprotonable compound in a water miscible volatile auxiliary solvent and mixing the said first and second streams either simultaneously or immediately following thereof, neutralizing said streams with an acid solution. Such immediate neutralization protects any hydrolizable surfactants that may be utilized in the crude emulsion stream. In a preferred method, the first and the second stream may be brought together immediately prior to neutralization or directly into a mixer with addition of acid directly into the mixer to neutralize the dispersion to form a dispersion of fine particles.
摘要翻译：底物和辅助溶剂溶解的成色剂和其他照相材料的沉淀分散体通常产生非常小的颗粒分散体，并且通常这种分散体由于粒度小而极高的反应性。然而，一些相对较疏水的成色剂，即使当通过沉淀技术形成分散体时它们产生小颗粒，也会导致非常不反应的分散体。本发明的方法构成了单步共沉淀技术，其中将碱去质子化合物，优选液体羧酸引入沉淀的颗粒中以产生高度活跃的成像剂分散体。本发明通过提供表面活性剂水溶液的第一流和包含偶联剂和碱脱质子化合物的碱性溶液在水混溶性挥发性辅助溶剂中的第二流，并将所述第一和第二流同时或紧随其后用酸溶液中和所述物流。这种立即中和保护了可用于粗乳液流中的任何可水解的表面活性剂。在优选的方法中，第一和第二物流可以在中和之前立即聚集在一起，或者直接加入到混合器中，直接加入到混合器中以中和分散体以形成细颗粒的分散体。

23. 发明授权

US5091296A Polymer co-precipitated coupler dispersion 失效
标题翻译：聚合物共沉淀成色剂分散体
公开(公告)号：US5091296A
公开(公告)日：1992-02-25
申请号：US543910
申请日：1990-06-26
申请人： Pranab Bagchi , Steven J. Sargeant , James T. Beck , Brian Thomas
发明人： Pranab Bagchi , Steven J. Sargeant , James T. Beck , Brian Thomas
IPC分类号： B01J13/00 , G03C1/04 , G03C1/38 , G03C7/388
CPC分类号： G03C7/388 , Y10S516/01
摘要： This invention describes a process of coprecipitating a photographic material such as a dye-forming coupler inside a base ionizable polymeric particle. Preparation of such a dispersion is performed by providing a first flow comprising a solution of a surfactant in water containing a polymer ionizable by base, providing a second flow comprising a water miscible solvent, base, water, and the photographic material, then mixing the said first and said second flow and immediately neutralizing the mixed flow to precipitate the photographic material inside the polymer particles forming a fine particle colloidal dispersion of the photographic material. The polymer dispersions of the invention are characterized by high photographic activity and high dye-stability in some cases.
摘要翻译：本发明描述了在基底可电离的聚合物颗粒内共沉淀诸如染料形成成色剂的照相材料的方法。通过提供包含表面活性剂在含有可由碱离子化的聚合物的水中的溶液提供第一流，提供包含水混溶性溶剂，碱，水和照相材料的第二流，然后将所述第一和所述第二流动并立即中和混合流以沉积形成照相材料的细颗粒胶体分散体的聚合物颗粒内的照相材料。在一些情况下，本发明的聚合物分散体的特征在于高照相活性和高染料稳定性。

24. 发明授权

US5089380A Methods of preparation of precipitated coupler dispersions with increased photographic activity 失效
标题翻译：制备具有增加的摄影活性的沉淀的成色剂分散体的方法
公开(公告)号：US5089380A
公开(公告)日：1992-02-18
申请号：US571395
申请日：1990-08-23
申请人： Pranab Bagchi
发明人： Pranab Bagchi
IPC分类号： G03C7/388
CPC分类号： G03C7/388 , Y10S516/922
摘要： Base and auxiliary solvent solubilized precipitated dispersions of couplers and other photographic materials usually produce very small particle dispersions, and usually such dispersions are extremely highly reactive because of the smallness of the particle size. However, some relatively more hydrophobic couplers, even though they produce small particles when a dispersion is formed by the precipitation technique, lead to extremely unreactive dispersions. The method of this invention constitutes a single step precipitation technique where a permanent high boiling water insoluble coupler solvent is incorporated into the precipitated particles to produce photographically highly active coupler dispersions. The invention is performed by providing a first flow of a crude emulsion of a high boiling water insoluble permanent coupler solvent in aqueous surfactant solution and a second flow comprising a basic solution of the coupler in a water miscible volatile auxiliary solvent and mixing the said first and second streams either simultaneously or immediately following thereof, neutralizing said streams with an acid solution. Such immediate neutralization protects any hydrolizable surfactants that may be utilized in the crude emulsion stream. In a preferred method, the first and the second stream may be brought together immediately prior to neutralization or directly into a mixer with addition of acid directly into the mixer to neutralize the dispersion to form a dispersion of fine particles.
摘要翻译：底物和辅助溶剂溶解的成色剂和其他照相材料的沉淀分散体通常产生非常小的颗粒分散体，并且通常这种分散体由于粒度小而极高的反应性。然而，一些相对较疏水的成色剂，即使当通过沉淀技术形成分散体时它们产生小颗粒，也会导致非常不反应的分散体。本发明的方法构成了单步沉淀技术，其中将永久性高沸点水不溶性成色剂溶剂引入沉淀的颗粒中以产生高度活跃的成像剂分散体。本发明通过在水表面活性剂溶液中提供高沸点水不溶性永久性成色剂溶剂的粗乳液的第一流程和包含偶联剂在水混溶性挥发性助剂溶剂中的碱性溶液的第二流，并将所述第一和第二流同时或紧随其后，用酸溶液中和所述物流。这种立即中和保护了可用于粗乳液流中的任何可水解的表面活性剂。在优选的方法中，第一和第二物流可以在中和之前立即聚集在一起，或者直接加入到混合器中，直接加入到混合器中以中和分散体以形成细颗粒的分散体。

25. 发明授权

US5916358A Ink compositions containing surfactant sols comprising mixtures of solid surfactants 失效
标题翻译：含有表面活性剂溶胶的油墨组合物包括固体表面活性剂的混合物
公开(公告)号：US5916358A
公开(公告)日：1999-06-29
申请号：US777133
申请日：1996-12-30
申请人： Pranab Bagchi , Ravi Sharma , Constance N. Anagnostopoulos , Gilbert A. Hawkins , John A. Lebens , Thierry Vachette , James M. Chwalek , David S. Ross
发明人： Pranab Bagchi , Ravi Sharma , Constance N. Anagnostopoulos , Gilbert A. Hawkins , John A. Lebens , Thierry Vachette , James M. Chwalek , David S. Ross
IPC分类号： C09D11/00 , C09D11/02
CPC分类号： C09D11/38
摘要： The invention is related to an aqueous ink composition comprising water, a coloring agent, and solid surfactant particles wherein said solid particles comprise a mixture of at least two surfactants with very low water solubility and with melting points between 40.degree. C. and 90.degree. C.
摘要翻译：本发明涉及包含水，着色剂和固体表面活性剂颗粒的水性油墨组合物，其中所述固体颗粒包含至少两种具有非常低水溶性的表面活性剂和40℃至90℃之间的熔点的混合物。

26. 发明授权

US5665331A Co-microprecipitation of nanoparticulate pharmaceutical agents with crystal growth modifiers 失效
标题翻译：纳米颗粒药剂与晶体生长改性剂的共沉淀
公开(公告)号：US5665331A
公开(公告)日：1997-09-09
申请号：US370998
申请日：1995-01-10
申请人： Pranab Bagchi , Raymond P. Scaringe , H. William Bosch
发明人： Pranab Bagchi , Raymond P. Scaringe , H. William Bosch
IPC分类号： A61K9/14 , A61K49/04
CPC分类号： B82Y5/00 , A61K49/0485 , A61K9/145 , Y10S977/745 , Y10S977/881 , Y10S977/915 , Y10S977/927 , Y10S977/928
摘要： This invention describes the coprecipitation of nanoparticulate pharmaceutical agent dispersion via a process that comprises the dissolution of the said pharmaceutical agent in combination with a crystal growth modifier (CGM) in an alkaline solution and then neutralizing the said solution with an acid in the presence of suitable surface-modifying surface-active agent or agents to form a fine particle dispersion of the said pharmaceutical agent, followed by steps of diafiltration clean-up of the dispersion and then concentration of it to a desired level. This process of dispersion preparation leads to microcrystalline particles of Z-average diameters smaller than 400 nm as measured by photon correlation spectroscopy. Various modification of precipitation schemes are described, many of which are suitable for large-scale manufacture of these agent dispersions. It has been discovered that coprecipitation with CGM leads to smaller particle size compared to a case where precipitation is carried out using the pharmaceutical agent alone. Thus, this dispersion of instant invention is expected to have greater bioavailability. The CGM compound is a compound that has at least about 75% of its chemical structure identical to that of the pharmaceutical agent.
摘要翻译：本发明描述了纳米颗粒药剂分散体的共沉淀，该方法包括在碱性溶液中将所述药剂与晶体生长调节剂（CGM）组合溶解，然后在适当的存在下用酸中和所述溶液表面改性表面活性剂或试剂以形成所述药剂的细颗粒分散体，然后将分散体进行渗滤清洗，然后将其浓缩至期望水平。这种分散制备过程导致通过光子相关光谱测量的Z平均直径小于400nm的微晶颗粒。描述了各种改性的沉淀方案，其中许多适用于这些试剂分散体的大规模制造。已经发现，与仅使用药剂进行沉淀的情况相比，CGM的共沉淀导致较小的粒度。因此，本发明的这种分散体预期具有更大的生物利用度。 CGM化合物是其化学结构的至少约75％与药剂相同的化合物。

27. 发明授权

US5565309A Oxygen barrier coated photographic agent milled dispersion particles for enhanced dye-stability 失效
标题翻译：用于增强染料稳定性的氧隔离涂层照相剂研磨分散体颗粒
公开(公告)号：US5565309A
公开(公告)日：1996-10-15
申请号：US292646
申请日：1994-08-18
申请人： Pranab Bagchi , Vincent J. Flow, III , Alberto M. Martinez
发明人： Pranab Bagchi , Vincent J. Flow, III , Alberto M. Martinez
IPC分类号： G03C1/06 , B01D3/12 , G03C1/00 , G03C1/005 , G03C7/32 , G03C7/388 , G03C5/18 , G03C5/26
CPC分类号： G03C1/005 , G03C1/002 , G03C7/388
摘要： The invention creates a selective oxygen barrier around individual coupler or other photographically active particles by surrounding each particle with a layer of water applicable oxygen barrier polymer such as polyvinyl alcohol (PVA), which will also act as a steric barrier to coalescence of the particles. Photographic products formed with such materials are more dye stable. The dispersions of this invention are prepared by mechanical milling or homogenization procedures.
摘要翻译：本发明通过用一层适用的氧阻隔聚合物如聚乙烯醇（PVA）包围每个颗粒，在单个成色剂或其它照相活性颗粒周围产生选择性氧气屏障，聚乙烯醇（PVA）也将作为颗粒聚结的空间屏障。用这种材料形成的摄影产品更稳定染料。本发明的分散体通过机械研磨或均化程序制备。

28. 发明授权

US5491052A Yellow layer for color photographic elements 失效
标题翻译：彩色摄影元素黄色层
公开(公告)号：US5491052A
公开(公告)日：1996-02-13
申请号：US477723
申请日：1995-06-07
申请人： James P. Van Meter , Pranab Bagchi , Brian Thomas , Thomas A. Rosiek
发明人： James P. Van Meter , Pranab Bagchi , Brian Thomas , Thomas A. Rosiek
IPC分类号： G03C7/388 , G03C7/396
CPC分类号： G03C7/3882 , G03C1/38 , G03C2200/48 , Y10S430/136
摘要： It has been discovered that when polyalkylene oxide compounds or block polymeric or block oligomeric surface active compounds comprising at least a polyoxypropylene (POP) block and a polyoxyethylene (POE) block are added to conventional dispersions of yellow couplers (that is dispersions in which the dispersed particles have a particle size of 0.1 to 0.6 .mu.m), such dispersions in a coated silver halide photographic element produce substantially higher dye yield compared to the conventional dispersion without any additive. Further, the yellow dye formed from such dispersions containing the addenda of this invention are substantially more light stable compared to dispersions that does not contain such addenda.The invention is carried out just by adding required amounts of the said polyoxyethylene (POE)--polyoxypropylene (POP) compound to a preformed milled coupler dispersion prior to coating the photographic element.
摘要翻译：已经发现，当将至少包含聚氧丙烯（POP）嵌段和聚氧乙烯（POE）嵌段的聚环氧烷化合物或嵌段聚合或嵌段低聚表面活性化合物加入到黄色成色剂的常规分散体中时（即其中分散的颗粒具有0.1至0.6μm的粒度），与没有任何添加剂的常规分散体相比，在涂覆的卤化银照相元件中的这种分散体产生显着更高的染料产率。此外，由含有本发明添加剂的这种分散体形成的黄色染料与不含这种添加剂的分散体相比，显着更稳定。本发明仅在涂布照相元件之前，将所需量的所述聚氧乙烯（POE） - 聚氧丙烯（POP）化合物添加到预先形成的研磨的偶联剂分散体中进行。

29. 发明授权

US5441865A Gelatin-grafted-polymer particles as peptizer for silver halide emulsions 失效
标题翻译：明胶接枝聚合物颗粒作为卤化银乳剂的胶溶剂
公开(公告)号：US5441865A
公开(公告)日：1995-08-15
申请号：US1361
申请日：1993-01-07
申请人： John D. Lewis , Mark A. Whitson , Thomas J. Dannhauser , Tienteh Chen , Pranab Bagchi
发明人： John D. Lewis , Mark A. Whitson , Thomas J. Dannhauser , Tienteh Chen , Pranab Bagchi
IPC分类号： G03C1/005 , G03C1/015 , G03C1/035 , G03C1/047 , G03C7/388
CPC分类号： G03C1/005 , G03C1/015 , G03C7/388
摘要： This invention describes the use of gelatin-grafted-polymer particles as peptizers for the preparation of silver halide photographic emulsions, whereby the gelatin-grafted-polymer particles remain attached to the AgX crystals after preparation of the emulsions. In an embodiment of this invention, the core polymer particles are loaded with photographically useful agents. When the photographic agent is a dye-forming coupler, multicolor mixed-packet systems can be constructed using the packet emulsions prepared in the manner of this invention.
摘要翻译：本发明描述了明胶接枝聚合物颗粒作为胶溶剂用于制备卤化银照相乳液的用途，其中明胶接枝聚合物颗粒在制备乳液后保持附着于AgX晶体。在本发明的一个实施方案中，核心聚合物颗粒装载有照相用的试剂。当照相剂是染料形成成色剂时，可以使用以本发明的方式制备的包装乳液来构建多色混合包装系统。

30. 发明授权

US5399480A Attachment of gelatin-grafted polymer particles to pre-precipitated silver halide grains 失效
标题翻译：将明胶接枝的聚合物颗粒附着到预沉淀的卤化银颗粒上
公开(公告)号：US5399480A
公开(公告)日：1995-03-21
申请号：US122191
申请日：1993-09-14
申请人： Mark A. Whitson , John D. Lewis , Tienteh Chen , Thomas J. Dannhauser , Pranab Bagchi
发明人： Mark A. Whitson , John D. Lewis , Tienteh Chen , Thomas J. Dannhauser , Pranab Bagchi
IPC分类号： G03C1/015 , G03C1/005 , G03C1/035 , G03C1/04 , G03C1/047 , G03C1/30 , G03C1/42 , G03C1/43 , G03C7/388
CPC分类号： G03C1/047 , G03C1/005 , G03C1/30 , G03C7/388 , G03C7/3882 , G03C2001/0471 , Y10S430/151
摘要： The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.
摘要翻译：本发明描述了卤化银包乳液颗粒或晶体，其通常用给定等电pH的明胶沉淀，被明胶接枝聚合物颗粒层包围，其中接枝明胶具有不同的等电位pH，并且所述明胶接枝聚合物颗粒任选化学键合到卤化银微晶周围的明胶上。这种包乳液可以形成混合包彩色摄影系统的基础。

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