申请人:AGFA-GEVAERT N.V.
公开号:US04042397A1
公开(公告)日:1977-08-16
Dyes are described corresponding to the following formula for use as light-absorbing dyes in silver halide photographic material: ##STR1## wherein: Z represents the atoms necessary to form a barbituric acid nucleus (p=1 or 2), a phenyl group (p=0 or 1) or a pyrrole ring (p=0) Each of L.sup.1, L.sup.2 and L.sup.3 represents a methine group, R.sup.3 represents an aliphatic or aromatic hydrocarbon group, R.sup.1 represents hydrogen, alkyl, acyl or amino and R.sup.2 represents hydrogen, alkyl or aryl, or R.sup.1 together with R.sup.2 represents the atoms necessary to complete a heterocycle.
以下是用于银盐摄影材料中作为吸光染料的染料,其描述对应以下公式:##STR1## 其中:Z代表形成巴比妥酸核(p=1或2)、苯基(p=0或1)或吡咯环(p=0)所需的原子。L1,L2和L3中的每一个代表一个甲烷基,R3代表脂肪或芳香族烃基,R1代表氢、烷基、酰基或氨基,R2代表氢、烷基或芳香族基,或者R1和R2一起代表完成一个杂环所需的原子。