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NEW DYE RELEASING COMPOUND AND USE THEREOF IN PHOTOGRAPHIC SILVER HALIDE COLOR MATERIAL FOR PRODUCING COLOR IMAGE BY DYE DIFFUSION TRANSFER METHOD
NEW DYE RELEASING COMPOUND AND USE THEREOF IN PHOTOGRAPHIC SILVER HALIDE COLOR MATERIAL FOR PRODUCING COLOR IMAGE BY DYE DIFFUSION TRANSFER METHOD
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机译:在照相卤化银彩色材料中的新染料释放化合物及其在染料扩散转移法生产彩色图像中的应用。
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摘要
photographic silver halide material comprises a shifted dye compound capable of releasing a dye moiety, characterized in that said compound corresponds in reduced state to general formula (1) and in oxidized state to general formula (2) :wherein :A' represents a hydroquinonyl group including a substituted hydroquinonyl group, or such group forming part of a fused ring system,A2 represents a quinonyl group including a substituted quinonyl group, or such group forming part of a fused ring system,L represents a bivalent group which undergoes a cleavage under hydrolytic alkaline conditions when the compound is in reduced state corresponding to formula (1),P represents an organic dye moiety incorporating an azo chromophoric group -N=N- linked through a conjugated bond system to an electron-withdrawing group being a monoester oxalyl groupwherein R represents an organic group, that can be introduced by esterification of a carboxylic acid group, said monoester oxalyl group being removable by hydrolysis resulting in a residual auxochromic hydroxyl (-OH) group.展开▼