Two-step process for manufacturing 1,1-difluoroethane

Details Two-step process for manufacturing 1,1-difluoroethane Two-step process for manufacturing 1,1-difluoroethane

1995-06-07

1997-09-30

Ivy, C. Warren

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

Organic compounds

Halogen containing

570248, C07C 17087, C07C 1720

Patent

active

056727887

ABSTRACT:
A process is disclosed for producing 1,1-difluoroethane (CH.sub.3 CHF.sub.2 or HFC-152a) in a two-step reaction in a manner that reduces formation of high boiling materials. The first step comprises adding at least one of HCl or HF to chloroethene (CH.sub.2 .dbd.CHCl) in order to obtain at least one of 1,1-dichloroethane (CH.sub.3 CHF.sub.2) or 1-chloro-1-fluoroethane (CH.sub.3 CHClF). The second step comprises converting 1,1-dichloroethane or 1-chloro-1-fluoroethane to 1,1-difluoroethane.

REFERENCES:
patent: 2452975 (1948-11-01), Whalley
patent: 2495407 (1950-01-01), Chapman et al.
patent: 3190930 (1965-06-01), Brock et al.
patent: 3707574 (1972-12-01), Stephan et al.
patent: 3862995 (1975-01-01), Martens et al.
patent: 3904701 (1975-09-01), Schultz 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
Rinker & Corcoran, Catalytic Addition of Hydrogen Chloride to Vinyl Chloride, I & ED Fundamentals, 6, pp. 333-338, Aug. 1967.
Stanley M. Walas, Phase Equilibriua In Chem. Eng. Butterworth Publishers, 165-244, 1985.

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