| 发明名称 |
Novel xanthene compounds and photographic products and processes employing the same |
| 摘要 |
In one embodiment, the present invention is concerned with novel xanthene compounds of the formula <IMAGE> <IMAGE> wherein R' is 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.
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| 申请公布号 |
US4258118(A) |
申请公布日期 |
1981.03.24 |
| 申请号 |
US19790106905 |
申请日期 |
1979.12.26 |
| 申请人 |
POLAROID CORPORATION |
发明人 |
FOLEY, JAMES W.;LOCATELL, JR., LOUIS;ZEPP, CHARLES M. |
| 分类号 |
C09B11/00;C09B11/24;C09B11/28;G03C1/83;G03C8/48;(IPC1-7):G03C1/84;G03C5/54;G03C1/40;G03C1/48 |
主分类号 |
C09B11/00 |
| 代理机构 |
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