发明名称 Process for the preparation of epsilon-caprolactam
摘要 The invention relates to a process for the preparation epsilon-caprolactam starting from 6-aminocapronitrile by hydrolysis/oligomerisation followed by de-oligomerisation/cyclisation using superheated steam characterized in that the hydrolysis/oligomerisation is performed with superheated steam converting 6-aminocapronitrile into a molten phase and a gas phase comprising ammonia, ammonia is continuously separated off and the de-oligomerisation/cyclisation is performed by treating the molten phase further with superheated steam. The invention also relates to a process for the preparation of epsilon-caprolactam starting from 6-aminocapronitrile by hydrolysis/oligomerisation followed by de-oligomerisation/cyclisation characterized in that the preparation is performed in a horizontal scraped-surface reactor, the hydrolysis/oligomerisation is performed with superheated steam converting 6-aminocapronitrile into a molten phase and a gas phase comprising ammonia, ammonia is continuously separated off and the de-oligomerisation/cyclisation is performed by treating the molten phase further with superheated steam.
申请公布号 US6841666(B2) 申请公布日期 2005.01.11
申请号 US20040473077 申请日期 2004.02.27
申请人 DSM IP ASSETS B.V. 发明人 BUIJS WIM;WOLTERS HENRICUS FRANCISCUS WILHELMUS
分类号 C07D201/08;C07D201/12;C07D201/16;C08G69/16;C08L77/00;(IPC1-7):C07D201/08 主分类号 C07D201/08
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