发明授权
US5750810A Method for coproducing difluoromethane and 1,1,1,2-tetrafluoroethane
失效
共同生产二氟甲烷和1,1,1,2-四氟乙烷的方法
- 专利标题: Method for coproducing difluoromethane and 1,1,1,2-tetrafluoroethane
- 专利标题(中): 共同生产二氟甲烷和1,1,1,2-四氟乙烷的方法
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申请号: US875656申请日: 1997-07-30
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公开(公告)号: US5750810A公开(公告)日: 1998-05-12
- 发明人: Jean-Pierre Schirmann , Serge Hub , Andre Lantz
- 申请人: Jean-Pierre Schirmann , Serge Hub , Andre Lantz
- 申请人地址: FRX
- 专利权人: Elf Atochem S.A.
- 当前专利权人: Elf Atochem S.A.
- 当前专利权人地址: FRX
- 优先权: FRX9501859 19950217
- 主分类号: C07C17/23
- IPC分类号: C07C17/23 ; C07C17/269 ; C07C19/08 ; C07C19/12 ; C07C17/26
摘要:
The present invention relates to the simultaneous manufacture of difluoromethane (F32) and 1,1,1,2-tetrafluoroethane (F134a) by pyrolysis of chlorodifluoromethane in the presence of hydrogen, working at a temperature above 500.degree. C. in the absence of any catalyst or metal surface. Depending on the operating conditions chosen, this process also makes it possible predominantly to manufacture either F134a or F32.
公开/授权文献
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