发明授权
- 专利标题: Process for the preparation of trifluoromethylbenzenes from the corresponding trichloro- or tribromo-methylbenzenes
- 专利标题(中): 从相应的三氯或三溴甲基苯制备三氟甲基苯的方法
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申请号: US243205申请日: 1981-03-12
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公开(公告)号: US4462937A公开(公告)日: 1984-07-31
- 发明人: Ramanadin , Laurent Seigneurin
- 申请人: Ramanadin , Laurent Seigneurin
- 申请人地址: FRX Paris
- 专利权人: Rhone-Poulenc Industries
- 当前专利权人: Rhone-Poulenc Industries
- 当前专利权人地址: FRX Paris
- 优先权: FRX8005877 19800317
- 主分类号: B01J10/00
- IPC分类号: B01J10/00 ; B01J19/24 ; C07B39/00 ; C07C17/00 ; C07C17/20 ; C07C22/08 ; C07C51/58 ; C07C67/00 ; C07C51/04
摘要:
This invention relates to a continuous process for the preparation of trifluoromethylbenzenes from the corresponding trichloro- or tribromo-methylbenzenes with hydrofluoric acid. The process is characterized by passing an ascending stream of gaseous hydrofluoric acid, countercurrently through a plurality of mobile successive liquid layers of the trichloro- or tribromo-methylbenzenes.
公开/授权文献
- US5471195A Direction-sensing acoustic glass break detecting system 公开/授权日:1995-11-28
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