发明名称 Easily decoloured oxonal dyes - as anti-halo agents
摘要 <p>Oxonol dyes have formula: (where n is 0, 1 or 2; R1 is H, alkyl or aryl; R2 is alkyl, aryl, cycloalkyl, aralkyl or a heterocyclic group which may be condensed; R3 is alkyl or aryl; X is CH2 or O; Y is NH2, NHR2, NR2R3 or a group of formula II: q and m are each 0-3; and q+m is at least 3). Used as anti-halo agents.</p>
申请公布号 FR2095635(A5) 申请公布日期 1972.02.11
申请号 FR19710018925 申请日期 1971.05.25
申请人 FILMFABRIK WOLFEN VEB 发明人
分类号 G03C1/83;(IPC1-7):03C1/00 主分类号 G03C1/83
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