Process for producing pentafluoroethane and tetrafluorochloroeth

Details Process for producing pentafluoroethane and tetrafluorochloroeth Process for producing pentafluoroethane and tetrafluorochloroeth

1999-07-26

2000-04-11

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570167, 570168, C07C 1708

Patent

active

060490160

ABSTRACT:
There is provided a process for producing HFC-125 and/or HCFC-124 from PCE, characterized by the first reaction step of fluorinating PCE in the presence of catalyst in a liquid phase to form HCFC-123 and/or HCFC-122 and the second reaction step of fluorinating HCFC-123 and/or HCFC-122 in the presence of catalyst in a vapor phase to form HFC-125 and/or HCFC-124.
This process is improved in the yield of objective products, and life of catalyst, and the controllability of reaction temperature.

REFERENCES:
patent: 4258225 (1981-03-01), Feiring
patent: 4911792 (1990-03-01), Manzer et al.

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