发明授权
US06346641B1 Method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine
失效
同时生产6-氨基己腈和六亚甲基二胺的方法
- 专利标题: Method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine
- 专利标题(中): 同时生产6-氨基己腈和六亚甲基二胺的方法
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申请号: US09720882申请日: 2001-01-02
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公开(公告)号: US06346641B1公开(公告)日: 2002-02-12
- 发明人: Hermann Luyken , Frank Ohlbach , Andreas Ansmann , Peter Bassler , Rolf Fischer , Johann-Peter Melder , Martin Merger , Alwin Rehfinger , Guido Voit , Günther Achhammer
- 申请人: Hermann Luyken , Frank Ohlbach , Andreas Ansmann , Peter Bassler , Rolf Fischer , Johann-Peter Melder , Martin Merger , Alwin Rehfinger , Guido Voit , Günther Achhammer
- 优先权: DE19832590 19980720
- 主分类号: C07C25500
- IPC分类号: C07C25500
摘要:
A process for the coproduction of 6-aminocapronitrile and hexamethylenediamine starting from adiponitrile by a) hydrogenating adiponitrile in the presence of a catalyst comprising an element of the eighth transition group as catalytically active component, to obtain a mixture comprising 6-aminocapronitrile, hexamethylenediamine, adiponitrile and high boilers, b) distillatively removing hexamethylenediamine from the mixture comprising 6-aminocapronitrile, hexamethylenediamine, adiponitrile and high boilers, and either c1) distillatively removing 6-aminocapronitrile, and then d1) distillatively removing adiponitrile, or c2) simultaneously distillatively removing 6-aminocapronitrile and adiponitrile into separate fractions is characterized by base of column temperatures below 185° C. in steps d1) or c2).