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    • 98. 发明授权
    • Polymeric pH-sensitive optical filter agents and articles including same
    • 聚合物pH敏感光学过滤剂及其制品
    • US4546062A
    • 1985-10-08
    • US635734
    • 1984-07-30
    • Irena Y. Bronstein-BonteEdward P. Lindholm
    • Irena Y. Bronstein-BonteEdward P. Lindholm
    • G03C8/48G03C5/54G03C1/40G03C1/84
    • G03C8/48
    • Polymeric optical filter agents and products and processes using same are disclosed. The polymeric optical filter agents are pH-sensitive materials comprising a polymeric backbone having a plurality of pendant moieties of the formula (I). ##STR1## wherein X is ##STR2## and R is alkyl, aryl, alkaryl or aralkyl; A is hydrogen, alkyl or the radical ##STR3## where each of Y.sup.1, Y.sup.2 and Y.sup.3 is hydrogen or an electron-withdrawing group; and each Z.sup.1, Z.sup.2 and Z.sup.3 is hydrogen or an electron-withdrawing group; with the proviso that, when each of Z.sup.1, Z.sup.2 and Z.sup.3 is hydrogen, said A is a radical ##STR4## wherein at least one of said Y.sup.1, Y.sup.2 and Y.sup.3 groups comprises an electron-withdrawing group. These agents upon contact with alkali are converted from a substantially non-light absorbing form to a highly colored light-absorbing form useful in photographic products.
    • 公开了聚合物光学滤光剂及使用其的产品和方法。 聚合物光学过滤剂是pH敏感材料,其包含具有多个式(I)侧链部分的聚合物骨架。 (I)其中X为X和R为烷基,芳基,烷芳基或芳烷基; A是氢,烷基或基团,其中Y1,Y2和Y3各自为氢或吸电子基团; Z 1,Z 2和Z 3各自为氢或吸电子基团; 条件是当Z1,Z2和Z3各自为氢时,所述A为基团,其中所述Y 1,Y 2和Y 3基团中的至少一个包含吸电子基团。 这些与碱接触的试剂从基本上不吸光的形式转变为可用于摄影产品的高度着色的光吸收形式。
    • 99. 发明授权
    • Color diffusion transfer photographic element
    • 彩色扩散转印照相材料
    • US4511643A
    • 1985-04-16
    • US534922
    • 1983-09-22
    • Ichizo Toya
    • Ichizo Toya
    • G03C8/48G03C7/00G03C8/36G03C8/52G03C5/54G03C1/40
    • G03C8/36G03C7/00G03C8/52
    • A color diffusion transfer photographic element is disclosed. The element provides a transferred dye image in a mordant layer and includes a compound having recurrent units represented by the general formula (I): ##STR1## the substituents within the general formula (I) are defined within the specification. By utilizing the compound the images produced having improved preservability having specific improvements with respect to the elimination of yellow stains which are formed in white areas of the images after storage for a long period of time. Furthermore, the images formed do not deteriorate at high temperatures and the use of the compound does not decrease the D.sub.max in print images.
    • 公开了彩色扩散转印照相元件。 该元件在媒染剂层中提供转移的染料图像,并且包括具有由通式(I)表示的复发单元的化合物:通式(I)中的取代基在说明书中定义。 通过利用化合物,产生的图像具有改进的保存性,对于在长时间储存​​之后形成在图像的白色区域中的黄色污渍的消除具有特定的改进。 此外,形成的图像在高温下不会劣化,并且化合物的使用不会降低打印图像中的Dmax。