发明名称 |
Carbonless duplicating and marking systems |
摘要 |
The invention provides processes for the preparation of both known and novel [bis(substituted-aryl)(indolyl)]methanes and [(substituted-aryl)(heteryl)(indolyl)]methanes, useful as color formers, particularly in carbonless duplicating and thermal marking systems, which comprises the interaction of [bis(substituted-aryl)(phenylsulfonyl)]methanes and [(substituted-aryl)(heteryl)(phenylsulfonyl)]methanes with indoles in the presence of either an alkaline or an acidic catalyst.
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申请公布号 |
US4403791(A) |
申请公布日期 |
1983.09.13 |
申请号 |
US19810290657 |
申请日期 |
1981.08.06 |
申请人 |
STERLING DRUG INC. |
发明人 |
SCHMIDT, PAUL J.;HUNG, WILLIAM M. |
分类号 |
B41M5/136;C07D209/08;C07D209/10;C07D455/04;(IPC1-7):B41M5/16;B41M5/18;B41M5/22 |
主分类号 |
B41M5/136 |
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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