发明名称 |
Novel benzofuran dyes |
摘要 |
A 6-tertiary amino-2-(Z=CH-)benzofuran dye is disclosed, where Z represents the atoms providing an electron withdrawing group and a conjugated methine linkage completing a resonant dye chromophore including the 6-tertiary amino group as an electron donor and the electron withdrawing group as an electron acceptor. The dyes are formed by condensing a 6-tertiary amino-2-formylbenzofuran with an electron withdrawing dye nucleus precursor containing an active methyl or methylene site. The dyes exhibit bathochromically shifted absorption peaks.
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申请公布号 |
US4948893(A) |
申请公布日期 |
1990.08.14 |
申请号 |
US19890394893 |
申请日期 |
1989.08.17 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
CHEN, CHIN H.;FOX, JOHN L. |
分类号 |
C09B23/04;C09B23/06;C09B23/10;G03F7/031 |
主分类号 |
C09B23/04 |
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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