发明授权
US4804754A Preparation of caprolactam from cyclohexanone oxime by Beckmann
rearrangement
失效
通过Beckmann重排从环己酮肟制备己内酰胺
- 专利标题: Preparation of caprolactam from cyclohexanone oxime by Beckmann rearrangement
- 专利标题(中): 通过Beckmann重排从环己酮肟制备己内酰胺
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申请号: US130949申请日: 1987-12-10
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公开(公告)号: US4804754A公开(公告)日: 1989-02-14
- 发明人: Emile De Decker , Jozef Oostvogels , Gerard van Wauwe , Gerald Neubauer
- 申请人: Emile De Decker , Jozef Oostvogels , Gerard van Wauwe , Gerald Neubauer
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3642314 19861211
- 主分类号: C07D201/04
- IPC分类号: C07D201/04 ; C07D201/16
摘要:
Caprolactam is prepared in a process comprising(a) a Beckmann rearrangement of cyclohexanone oxime with oleum at from 70.degree. to 130.degree. C. in one or more rearrangement stages, and(b) aftertreatment of the reaction mixture obtained from the rearrangement stage in a delay zone at from 70.degree. to 110.degree. C. for from 10 to 600 minutes.
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