| 发明名称 |
Process and intermediates for preparing 3-[4-(disubstituted-amino)phenyl] or (9-julolidinyl)-3-(diphenylamino)phthalides |
| 摘要 |
3-[4-(Disubstituted-amino)phenyl] or (9-julolidinyl)-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive and thermal marking systems are prepared by reaction of 2-[4-(disubstituted-amino)benzoyl] or (9-julolidinyl-carbonyl)benzoic acids with diphenylamines.
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| 申请公布号 |
US4255577(A) |
申请公布日期 |
1981.03.10 |
| 申请号 |
US19790069979 |
申请日期 |
1979.08.27 |
| 申请人 |
STERLING DRUG INC. |
发明人 |
SCHMIDT, PAUL J.;HUNG, WILLIAM M. |
| 分类号 |
B41M5/025;B41M5/145;B41M5/327;C07D307/90;(IPC1-7):C07D307/83;C07D455/00 |
主分类号 |
B41M5/025 |
| 代理机构 |
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代理人 |
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| 主权项 |
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