申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0026519A1
公开(公告)日:1981-04-08
A photographic material comprising in at least one light-sensitive silver halide emulsion layer and/or in a hydrophilic colloid layer in water-permeable relationship with such an emulsion layer an antifoggant precursor corresponding to one of the following general formulae:
wherein: each of Y' and Y2 (same or different) is an acyl group each of Y10 and Y20 (same ordifferent) is an aromatic acyl group,
R is an alkyl group, an aryl group or a heterocyclic nitrogen-containing 5-, 6- or 7-membered ring,
R' is hydrogen, an alkyl group, an aryl group, a carboxyl group in free acid, salt or esterified form, a carbamoyl group or N-substituted carbamoyl group,
R2 is hydrogen, an alkyl group or an aryl group,
R3 has the same meaning as Y10, or is hydrogen, or is an alkyl group or an aryl group, or is a R7-S- group wherein R7 is an alkyl group, an aryl group, or a heterocyclic group,
R4 is hydrogen, an aryl group or a heterocyclic group,
R5 is hydrogen, an alkyl group, an aryl group or a heterocyclic group, and
Z represents the necessary atoms to close a heterocyclic nitrogen-containing 5-, 6- or7-membered ring.
一种感光材料,在至少一个感光卤化银乳剂层和/或与该乳剂层有透水性关系的亲水胶体层中,含有符合以下通式之一的防雾剂前体:
其中: Y'和 Y2(相同或不同)各自为酰基 Y10 和 Y20(相同或不同)各自为芳香酰基、
R 是烷基、芳基或含氮杂环的 5、6 或 7 元环、
R' 是氢、烷基、芳基、游离酸、盐或酯化形式的羧基、氨基甲酰基或 N-取代的氨基甲酰基、
R2 是氢、烷基或芳基、
R3 与 Y10 意义相同,或为氢、或为烷基或芳基、或为 R7-S- 基团,其中 R7 为烷基、芳基或杂环基团、
R4 是氢、芳基或杂环基、
R5 是氢、烷基、芳基或杂环基,以及
Z 代表关闭含氮 5、6 或 7 元杂环所需的原子。