Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1994-09-15
1996-09-24
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570166, 570167, 570168, 570169, C07C 1708
Patent
active
055592767
ABSTRACT:
A method of producing 1,1,1,2-tetrafluoroethane in two separation reaction zones involving (1) reaction of trichloroethylene and hydrogen fluoride to produce 1,1,1-trifluoro-2-chloroethane and (2) reaction of the 1,1,1- trifluoro-2-chloroethane and hydrogen fluoride to produce 1,1,1,2-tetrafluoroethane wherein both reactions are carried out at superatmospheric pressure, reaction (2) is carried out at a temperature in the range of 250.degree.-450.degree. C., reaction (1) is carried out at a temperature in the range of 200.degree.-400.degree. C. but below that used in reaction (2) and unconverted 1,1,1-trifluoro-2-chloroethane is recycled for further reaction with hydrogen fluoride.
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Scott John D.
Steven Rachel A.
Imperial Chemical Industries plc
Siegel Alan
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