Azeotropic or azeotrope-like compositions of hydrofluoric acid w

Details Azeotropic or azeotrope-like compositions of hydrofluoric acid w Azeotropic or azeotrope-like compositions of hydrofluoric acid w

1996-03-18

1998-08-04

Siegel, Alan

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

Organic compounds

Halogen containing

570178, 570262, C07C 1900

Patent

active

057896330

ABSTRACT:
The instant invention relates to azeotropic or azeotrope-like compositions of hydrofluoric acid with at least one of 1,1-dichloroethane, 1-chloro-1-fluoroethane and 1,1-difluoroethane. The invention also relates to manufacturing processes for separating hydrofluoric acid from a mixture comprising hydrofluoric acid and one or more of the 1,1-dihaloethane.

REFERENCES:
patent: 2495407 (1950-01-01), Chapman et al.
patent: 3190930 (1965-06-01), Brock et al.
patent: 3862995 (1975-01-01), Martens et al.
patent: 4147733 (1979-04-01), Fiske et al.
patent: 4766258 (1988-08-01), Komatsu et al.
patent: 5008474 (1991-04-01), Wairseveas et al.
patent: 5155082 (1992-10-01), Tung et al.
patent: 5208395 (1993-05-01), Elsheikh
patent: 5396001 (1995-03-01), Peanstreau
Soviet Inventions Illustrated, 183599, Feb. 1965.

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