发明名称 Photographic products and processes employing azo dyes, azo dye-releasing compounds
摘要 Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a novel releasable azo dye. The dyes are azophenols, or precursors of azophenols, and have electron withdrawing groups in each of the positions ortho to the phenolic hydroxy group.
申请公布号 US4156609(A) 申请公布日期 1979.05.29
申请号 US19770850179 申请日期 1977.11.10
申请人 EASTMAN KODAK 发明人 LANDHOLM, RICHARD A;ROBBINS, JERRY M
分类号 C09B29/15;G03C8/10;(IPC1-7):G03C7/00;G03C1/40 主分类号 C09B29/15
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