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1.发明公开PROCEDE DE COPRODUCTION DE DIFLUOROMETHANE ET DE 1,1,1,2-TETRAFLUOROETHANE 失效二氟甲烷的方法联产和1,1,1,2-四氟乙烷
公开(公告)号：EP0809620A1
公开(公告)日：1997-12-03
申请号：EP96901400.0
申请日：1996-01-16
申请人： ELF ATOCHEM S.A.
发明人： SCHIRMANN, Jean-Pierre , HUB, Serge , LANTZ, André
CPC分类号： C07C17/23 , C07C17/269 , C07C19/08
摘要： A method for simultaneously producing difluoromethane (F32) and 1,1,1,2-tetrafluoroethane (F134a) in gas phase in the absence of any catalyst or metal surface by pyrolysing chlorodifluoromethane (F22) at a temperature above 500 °C in the presence of hydrogen. Depending on the operating conditions, the method also enables a major proportion of either F32 or F134a to be achieved.
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公开(公告)号：EP0975567A1
公开(公告)日：2000-02-02
申请号：EP98902051.6
申请日：1998-01-09
申请人： ELF ATOCHEM S.A.
发明人： HUB, Serge , GUILLET, Dominique
IPC分类号： C07C17/358 , C07C19/08
CPC分类号： C07C17/358 , C07C19/08
摘要： In order to isomerize a hydrofluorocarbon with a certain thermodynamic stability (HFC 1) into hydrofluorocarbon with greater thermodynamic stability (HFC 2), the hydrofluorocarbon HFC1 is subjected to a thermal treatment in the presence of hydrogen at a temperature higher than 500 °C. This method which does not require the use of a catalyst is applicable in particular to the isomerization of 1,1,1,2-tetrafluoroethane into 1,1,1,2-tetrafluoroethane.
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3.发明授权PROCEDE DE COPRODUCTION DE DIFLUOROMETHANE ET DE 1,1,1,2-TETRAFLUOROETHANE 失效二氟甲烷的方法联产和1,1,1,2-四氟乙烷
公开(公告)号：EP0809620B1
公开(公告)日：1999-04-07
申请号：EP96901400.0
申请日：1996-01-16
申请人： ELF ATOCHEM S.A.
发明人： SCHIRMANN, Jean-Pierre , HUB, Serge , LANTZ, André
IPC分类号： C07C17/23 , C07C17/269 , C07C19/08
CPC分类号： C07C17/23 , C07C17/269 , C07C19/08
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