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> wherein X is <IMAGE> wherein R' is alkyl, Y is an electron-withdrawing group and n is 0 or 1. 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 |
US4258119(A) |
申请公布日期 |
1981.03.24 |
申请号 |
US19790106938 |
申请日期 |
1979.12.26 |
申请人 |
POLAROID CORPORATION |
发明人 |
COURNOYER, RICHARD L.;FOLEY, JAMES W. |
分类号 |
C09B11/00;C09B11/24;C09B11/28;G03C1/825;G03C1/83;G03C8/08;G03C8/48;(IPC1-7):G03C1/40;G03C1/84;G03C5/54;G03C1/48 |
主分类号 |
C09B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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