发明名称 3,6-Di(alkyl/phenyl)amino-9-carboxamidophenyl-xanthenes
摘要 In one embodiment, the present invention is concerned with novel xanthene compounds of the formula <IMAGE> wherein each R1 the same or different is hydrogen or alkyl, each R2 the same or different is alkyl or phenyl, R3 is phenyl or alkyl, Y is an electron-withdrawing group and A is an anion. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds.
申请公布号 US4290955(A) 申请公布日期 1981.09.22
申请号 US19800154620 申请日期 1980.05.30
申请人 POLAROID CORPORATION 发明人 CINCOTTA, LOUIS;FOLEY, JAMES W.
分类号 C07D311/82;G03C8/48;(IPC1-7):C07D311/82 主分类号 C07D311/82
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