申请人:EASTMAN KODAK COMPANY
公开号:EP0953870A1
公开(公告)日:1999-11-03
The invention provides a photographic element, comprising a support bearing at least one silver halide emulsion and at least one 3-indoloylacetanilide yellow dye-forming DIR coupler of structure I, below:
wherein:
R1 is an alkyl or phenyl group;
R2 is a phenyl, t-butyl, cyclohexyl or naphthyl group;
X is a halogen atom or an alkoxy or alkyl group;
each R3 is in the para position or either meta position relative to the anilino nitrogen and is individually selected from the group consisting of halogen atoms, and alkyl, phenyl, alkoxy, phenoxy, carbamoyl, sulfamoyl, carbonamido, sulfonamido, alkylsulfonyl, arylsulfonyl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, sulfoxyl, sulfonyloxy, alkylthio, acyl and cyano groups;
n is 1, 2 or 3;
R4 contains at least two carbon atoms and is an alkylthio group or a carbonamido group represented by -NHCOR5, wherein R5 contains at least four carbon atoms and is an alkyl, phenyl, alkoxy or phenoxy group;
each R6 is individually a halogen atom, an alkyl group or an alkoxy group and m is 0-4;
provided that substituents may join to form a ring.
本发明提供了一种感光元件,它包括一个承载至少一种卤化银乳剂的支架和至少一种如下结构 I 的 3-吲哚酰乙酰苯胺黄色染料形成的 DIR 耦合剂:
其中
R1 是烷基或苯基;
R2 是苯基、叔丁基、环己基或萘基;
X 是卤素原子或烷氧基或烷基;
每个 R3 位于相对于苯胺基氮的对位或元位,且各自选自由卤素原子、烷基、苯基、烷氧基、苯氧基、氨基甲酰基、氨基磺酰基、碳氨基、磺氨基、烷基磺酰基、芳基磺酰基、烷氧基羰基、芳氧基羰基、酰氧基、亚砜氧基、磺酰氧基、烷硫基、酰基和氰基组成的组;
n 为 1、2 或 3;
R4 含有至少两个碳原子,是烷硫基或由 -NHCOR5 表示的氨基甲酰基,其中 R5 含有至少四个碳原子,是烷基、苯基、烷氧基或苯氧基;
每个 R6 分别为卤素原子、烷基或烷氧基,m 为 0-4;
但取代基可连接形成一个环。