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公开(公告)号：EP0690834A1
公开(公告)日：1996-01-10
申请号：EP94903673.0
申请日：1993-12-17
CPC分类号： C07C17/087 , C07C19/12
摘要： A more efficient reaction mechanism is provided for producing 1,1-dichloro-1-fluoroethane (HCFC-141b) by reacting vinylidene chloride with hydrogen fluoride in the liquid phase in the presence of a catalyst and sulfone based or nitrated solvent. In particular, by using a titanium tetrafluoride catalyst in conjunction with tetramethylene sulfone solvent, most all the vinylidene chloride reagents can be converted to HCFC-141b to the virtual exclusion of unwanted, closely associated byproducts like 1,1-difluoro-1-chloroethane (HCFC-142b) and 1,1,1-trifluoroethane (HFC-143a) while reducing the production of tars to a minimum.
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公开(公告)号：EP0690834B1
公开(公告)日：1998-07-29
申请号：EP94903673.5
申请日：1993-12-17
IPC分类号： C07C19/12 , C07C17/087
CPC分类号： C07C17/087 , C07C19/12
摘要： A more efficient reaction mechanism is provided for producing 1,1-dichloro-1-fluoroethane (HCFC-141b) by reacting vinylidene chloride with hydrogen fluoride in the liquid phase in the presence of a catalyst and sulfone based or nitrated solvent. In particular, by using a titanium tetrafluoride catalyst in conjunction with tetramethylene sulfone solvent, most all the vinylidene chloride reagents can be converted to HCFC-141b to the virtual exclusion of unwanted, closely associated byproducts like 1,1-difluoro-1-chloroethane (HCFC-142b) and 1,1,1-trifluoroethane (HFC-143a) while reducing the production of tars to a minimum.
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