发明名称 |
A PROCESS FOR PREPARING 4-AMINODIPHENYLAMINE |
摘要 |
The invention provides a process for preparing 4- aminodiphenylamine, an important starting product for synthesizing antioxidants and stabilizers in the rubber and polymer industry, by hydrogenating nitrosobenzene with hydrogen in the presence of a proton acid as catalyst and in the presence of a hydrogenating catalyst, optionally in the presence of an inert organic solvent and thermally decomposing the 4- ADPA ammonium salt produced in this way, wherein 4-ADPA is obtained. 4-aminodiphenylamine is produced in good yields and high purity by the process according to the present invention. Furthermore, no effluent is produced, which makes the process particularly economic and ecological.</SDO AB>
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申请公布号 |
CA2361222(A1) |
申请公布日期 |
2002.05.08 |
申请号 |
CA20012361222 |
申请日期 |
2001.11.05 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
GIERA, HENRY;HAIDER, JOACHIM;LAUE, CHRISTIAN;JAUTELAT, MANFRED;OOMS, PIETER;SCHELHAAS, MICHAEL;BIELEFELDT, DIETMAR;CASSER, CARL |
分类号 |
C07B61/00;C07C209/38;C07C209/68;C07C211/55;(IPC1-7):C07C211/55 |
主分类号 |
C07B61/00 |
代理机构 |
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主权项 |
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地址 |
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