Photographic silver halide materials containing dispersed light-absorbing merostyryl dyes
申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0021513A1
公开(公告)日:1981-01-07
Light-sensitive photographic silver halide material comprising a hydrophilic colloid layer containing in dispersed state a light-absorbing merostyryl dye that corresponds to the following general formula:
in which:
R1 is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl,
R2 is carboxy, alkoxycarbonyl, aryloxycarbonyl, carbamoyl, ureido, sulphamoyl or one of the groups represented by R1;
at least one of R' and R2 being or containing carboxy or carbamoyl,
R3 is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, and when R3 is alkyl or alkoxy it stands in ortho or para in respect of the hydroxy group, which itself is in ortho or para in respect of the methine group,
said merostyryl dye containing no group that renders the dye soluble in the hydrophilic colloid layer.
感光照相卤化银材料,包括亲水性胶体层,该胶体层在分散状态下含有符合以下通式的吸光美洛斯基染料:
其中
R1 是氢、烷基、取代烷基、芳基、取代芳基、烷基或取代烷基、
R2 是羧基、烷氧羰基、芳氧羰基、氨基甲酰基、脲基、氨基磺酰基或 R1 所代表的基团之一;
R' 和 R2 中至少有一个是或含有羧基或氨基甲酰基、
R3 是氢、C1-C4 烷基、C1-C4 烷氧基,当 R3 是烷基或烷氧基时,它与羟基为正交或对位,而羟基本身与甲 基为正交或对位、
所述美拉西丁基染料不含使染料溶于亲水胶体层的基团。