Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1992-01-17
1993-02-09
Evans, Joseph E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570156, 570160, 570165, 570166, C07C 1708, C07C 1720, C07C 1902
Patent
active
051854821
ABSTRACT:
This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethane and, optionally, other organic by-products. The improvement resides in conducting the reaction in a single reaction zone while recovering the 1,1,1,2-tetrafluoroethane from the mixture and recycling the 2-chloro-1,1,1-trifluoroethane and, optionally, other organic by-products from the mixture to the reaction along with trichloroethylene and HF.
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E. I. Du Pont de Nemours and Company
Evans Joseph E.
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