Liquid phase process for the preparation of 1,1-difluoroethane

Details Liquid phase process for the preparation of 1,1-difluoroethane Liquid phase process for the preparation of 1,1-difluoroethane

1995-08-25

1996-08-13

Evans, Joseph E.

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

Organic compounds

Halogen containing

570167, C07C 17093, C07C 1720, C07C 1908

Patent

active

055457754

ABSTRACT:
1,1-difluoroethane is produced by the reaction of 1,2-dichloroethane with anhydrous hydrogen fluoride in a liquid phase and in the presence of a Lewis acid. Preferably the Lewis acid is tin, antimony, titanium, molybdenum, tungsten, niobium or tantalum halide or a mixture thereof.

REFERENCES:
patent: 2452975 (1948-11-01), Walley
patent: 3190930 (1965-06-01), Brock et al.
patent: 3978145 (1976-08-01), Knaak
patent: 5008474 (1991-04-01), Wairaevens et al.

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