发明授权
- 专利标题: Method for purifying caprolactam
- 专利标题(中): 己内酰胺纯化方法
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申请号: US10534822申请日: 2003-11-11
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公开(公告)号: US07501047B2公开(公告)日: 2009-03-10
- 发明人: Hermann Luyken , Andreas Ansmann , Christoph Benisch , Peter Baβler , Rolf-Hartmuth Fischer , Stefan Maixner , Johann-Peter Melder
- 申请人: Hermann Luyken , Andreas Ansmann , Christoph Benisch , Peter Baβler , Rolf-Hartmuth Fischer , Stefan Maixner , Johann-Peter Melder
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DE Ludwigshafen
- 代理机构: Connolly Bove Lodge & Hutz LLP
- 优先权: DE10253094 20021113
- 国际申请: PCT/EP03/12558 WO 20031111
- 国际公布: WO2004/043915 WO 20040527
- 主分类号: B01D3/14
- IPC分类号: B01D3/14 ; B01D3/34 ; C07D201/08 ; C07D201/16
摘要:
The disclosure relates to a process for purifying crude caprolactam. The process involves converting a first mixture of 6-amino capronitrile and water to a second mixture of caprolactam ammonia, water, high boilers and low boilers using a catalyst. The ammonia is removed from the second mixture to obtain a third mixture. Water is removed from the third mixture to give crude caprolactam, high boiler and low boilers. Purified caprolactam is then obtained by a series of distillation steps.
公开/授权文献
- US20060090994A1 Method for purifying caprolactam 公开/授权日:2006-05-04
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