发明名称 |
3-amido-7-disubstituted amino-10-carbonylphenothiazines |
摘要 |
3-(N-R2-N-Acylamino)-7-(N-R3-N-R4-amino)-10-acylphenothiazines and phenoxazines useful as color formers, particularly in electrochromic recording systems, are prepared by the interaction of the corresponding 3-(N-R2-amino)-7-(N-R3-N-R4-amino)phenothiazinium or phenoxazinium halide with a reducing agent to obtain the corresponding leuco compound and subsequently interacting the leuco compound with at least two molecular proportions of an acylating agent.
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申请公布号 |
US4652643(A) |
申请公布日期 |
1987.03.24 |
申请号 |
US19860847985 |
申请日期 |
1986.04.03 |
申请人 |
THE HILTON-DAVIS CHEMICAL COMPANY |
发明人 |
GUNN, MICHAEL B.;HUNG, WILLIAM M. |
分类号 |
B41M5/20;C07D265/38;C07D279/30;(IPC1-7):C07D279/30 |
主分类号 |
B41M5/20 |
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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