发明公开
EP0630881A1 Process for the preparation of diphenylamine
失效
Verfahren zur Herstellung von Diphenylaminen。
- 专利标题： Process for the preparation of diphenylamine
- 专利标题（中）： Verfahren zur Herstellung von Diphenylaminen。
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申请号： EP94109643.0申请日： 1994-06-22
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公开(公告)号： EP0630881A1公开(公告)日： 1994-12-28
- 发明人: Kusuda, Chiyuki , Wada, Masaru , Nagata, Teruyuki
- 申请人： MITSUI TOATSU CHEMICALS, Inc.
- 申请人地址： 2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
- 专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人地址： 2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
- 代理机构： Zumstein, Fritz, Dr.
- 优先权： JP150287/93 19930622; JP150288/93 19930622
- 主分类号： C07C209/28
- IPC分类号： C07C209/28 ; C07C209/68
摘要：
A diphenylamine with both the phenyl groups being substituted is prepared by reacting a phenol with ammonia in the presence of a hydrogen transfer catalyst and a cyclohexanone; or by converting a portion of the phenol to the cyclohexanone in the presence of a hydrogen transfer catalyst and under hydrogen pressure and then reacting the remaining portion of the phenol with ammonia in the presence of the cyclohexanone so converted and the hydrogen transfer catalyst. The diphenylamine can be obtained very efficiently.
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