Manufacture of halogenated compounds

Details Manufacture of halogenated compounds Manufacture of halogenated compounds

1978-02-07

1979-06-19

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2606538, C07C 1708

Patent

active

041586751

ABSTRACT:
Manufacture of 1,1,1,2-tetrafluoroethane by reacting 1,1,1-trifluoro-2-chloroethane with hydrogen fluoride in the presence of a chromium oxide catalyst and removing 1,1-difluoro-2-chloroethylene contaminant from the resulting impure asym tetrafluoroethane product by passing the impure product with hydrogen fluoride over a chromium oxide catalyst at much lower temperatures than are used in the manufacturing process.

REFERENCES:
patent: 2885427 (1959-05-01), Ruh et al.
patent: 3755477 (1973-08-01), Firth et al.

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