发明名称 Photographic emulsion layer containing pyrazoloazole coupler exhibiting improved dye light fade
摘要 A photographic light sensitive silver halide emulsion layer has associated therewith a pyrazoloazole dye-forming coupler having the formula: <IMAGE>zolotriazole nucleus by a fully substituted carbon atom; X is hydrogen or a coupling-off group; L is a divalent linking group; R2, R3, and R4 are independently hydrogen or substituent groups; and Za, Zb, and Zc are independently -C(R')(R'')-, =N-, =C(R')-, or -NH-, wherein R', and R'' are independently H or a substituent, provided that one of either the Za-Zb or the Zb-Zc bond is a double bond and the other is a single bond, and provided that when the Zb-Zc bond is a double bond, it may form part of a fused ring.
申请公布号 US5609996(A) 申请公布日期 1997.03.11
申请号 US19960608916 申请日期 1996.02.29
申请人 EASTMAN KODAK COMPANY 发明人 TANG, PING W.;COWAN, STANLEY W.;DECKER, DAVID J.;MUNGAL, TERRENCE C.
分类号 C07D487/04;G03C7/38;(IPC1-7):G03C7/38 主分类号 C07D487/04
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