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    • 5. 发明授权
    • Light absorbing dye for photography
    • 用于摄影的吸光染料
    • US4904578A
    • 1990-02-27
    • US303233
    • 1989-01-30
    • Akira TanakaKoichi Sumioka
    • Akira TanakaKoichi Sumioka
    • C09B23/04G03C1/83
    • C09B23/04G03C1/832
    • This invention provides a light absorbing dye for silver halide photographic light-sensitive material which is represented by the following formula [I] or [II]: ##STR1## wherein R.sub.1 and R.sub.2 which may be identical or different each represents a substituted or unsubstituted alkyl group and may link to each other to form a ring, R.sub.3 represents an alkyl group substituted with at least one sulfo group or an aryl group substituted with at least one sulfo group, R.sub.4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a carboxy group or an alkoxycarbonyl group, and n represents an integer of 1-4; ##STR2## wherein R.sub.1 represents an alkyl group or an aryl group, R.sub.2 represents an aryl group substituted with sulfo group and R.sub.3 represents an alkyl group.
    • 本发明提供了由下式[I]或[II]表示的卤化银摄影感光材料的吸光染料:其中可以相同或不同的R1和R2各自表示取代基 或未取代的烷基,并且可以彼此连接形成环,R 3表示被至少一个磺基取代的烷基或被至少一个磺基取代的芳基,R 4表示取代或未取代的烷基,被取代的 或未取代的芳基,羧基或烷氧基羰基,n表示1-4的整数。 [II]其中R1表示烷基或芳基,R2表示被磺基取代的芳基,R3表示烷基。