| 发明名称 |
PROCESS FOR THE PREPARATION OF 4-NITROTOLUENE-2-SULFONIC ACID |
| 摘要 |
1. A process for the preparation of 4-nitrotoluene-2-sulfonic acid by sulfonating 4-nitrotoluene with oleum, which comprises carrying out the sulfonation continuously with 50-85% oleum and keeping the conversion in the reaction mixture, to which 4-nitrotoluene and oleum are added, at >=90% during the entire reaction course.
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| 申请公布号 |
EP0143750(B1) |
申请公布日期 |
1987.04.22 |
| 申请号 |
EP19840810570 |
申请日期 |
1984.11.22 |
| 申请人 |
CIBA-GEIGY AG |
发明人 |
SEIFERT, GOTTFRIED;STAUBLI, SEBASTIAN;WIELAND, JOSEF HERMANN, DR.;REGENASS, WILLY, DR. |
| 分类号 |
C07C309/40;C07C;C07C67/00;C07C301/00;C07C303/06;C07C305/06;C11D3/42;(IPC1-7):C07C143/55 |
主分类号 |
C07C309/40 |
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