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公开(公告)号：US3971824A
公开(公告)日：1976-07-27
申请号：US585919
申请日：1975-06-11
CPC分类号： C09K19/2007
摘要： Liquid crystalline materials comprised of substituted phenyl p-benzoyloxybenzoates are useful in electro-optical elements. These materials have low crystal to mesophase transition temperatures and have a broad mesophase temperature range.
摘要翻译： 由取代的对苯甲酰氧基苯甲酸苯酯组成的液晶材料可用于电光元件。 这些材料具有低的晶体到中间相转变温度，并且具有宽的中间相温度范围。
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公开(公告)号：US5491052A
公开(公告)日：1996-02-13
申请号：US477723
申请日：1995-06-07
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。
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