Process for purification of hydrochlorofluoroethanes

Details Process for purification of hydrochlorofluoroethanes Process for purification of hydrochlorofluoroethanes

1997-10-16

1999-09-14

Gorgos, Kathryn

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

2051573, 20515721, 210748, 210915, C07C 100, B01D 5300, B01D 500, B01D 1706

Patent

active

059518308

ABSTRACT:
To remove the olefinic impurities from a hydrochlorofluoroethane of formula: CF.sub.3 --CHClX (X=H, F, or Cl), it is subjected to a photochlorination stage.

REFERENCES:
patent: 4060469 (1977-11-01), Sweeney et al.
patent: 4145368 (1979-03-01), Sweeney et al.
patent: 4948479 (1990-08-01), Brooks et al.
patent: 5026930 (1991-06-01), Manzer et al.
Yoshinaga et al. Purification of hydrochlorofluorocarbons and hydrofluorocarbons vol. 118, No. 19, May 10, 1993.
French Search Report Jun. 19, 1997.

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