发明授权
- 专利标题： Process for preparing halogenated aromatic amines
- 专利标题（中）： 卤代芳香胺的制备方法
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申请号： US351696申请日： 1989-05-15
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公开(公告)号： US4990663A公开(公告)日： 1991-02-05
- 发明人: Yu-Wei Chang , Robert L. Seagraves
- 申请人： Yu-Wei Chang , Robert L. Seagraves
- 申请人地址： DE Wilmington
- 专利权人： E. I. Du POnt de Nemours and Company
- 当前专利权人： E. I. Du POnt de Nemours and Company
- 当前专利权人地址： DE Wilmington
- 主分类号： B01J23/42
- IPC分类号： B01J23/42 ; B01J23/89 ; C07B61/00 ; C07C209/36 ; C07C209/90 ; C07C211/52
摘要：
This invention relates to a process for the hydrogenation of halogenated aromatic nitro compounds to the corresponding halogenated amines using a platinum catalyst in the presence of certain aminoalkyl ethers or alkanolamines. It relates in addition to halogenated aromatic amines containing an amount of such aminoalkyl ether or alkanolamine effective to stabilize said halogenated aromatic amine. The storage stabilizers and dehalogenation inhibitors contain a total of 2 to 6 carbon atoms and can be represented by the formula:R.sup.1 --(R.sup.2)--N--(CH.sub.2).sub.n --O--R.sup.3wherein R.sup.1 and R.sup.2 may be the same or different --H or --CH.sub.2 CH.sub.2 OH, n is an integer from 2 to 3, and R.sup.3 is either --H or --CH.sub.3.