Process for obtaining a purified hydrofluoroalkane

Details Process for obtaining a purified hydrofluoroalkane Process for obtaining a purified hydrofluoroalkane

2007-02-20

2007-02-20

Page, Thurman K. (Department: 1621)

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

Organic compounds

Halogen containing

Reexamination Certificate

active

10344037

ABSTRACT:
Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from(a) a treatment with chlorine in the presence of a initiator(b) a reaction with hydrogen fluoride(c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side(d) an extractive distillation(e) an adsorption onto a solid adsorbent(f) a reaction with a compound containing oxygen, and(g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.

REFERENCES:
patent: 2999885 (1961-09-01), Heberling, Jr.
patent: 3101304 (1963-08-01), Wiist
patent: 3218363 (1965-11-01), Haszeldine
patent: 4950364 (1990-08-01), Wismer
patent: 5233107 (1993-08-01), Jansen
patent: 5475169 (1995-12-01), Hopp et al.
patent: 5621152 (1997-04-01), Jansen et al.
patent: 5801294 (1998-09-01), Sage et al.
patent: 5895825 (1999-04-01), Elsheikh et al.
patent: 5944962 (1999-08-01), Boyce
patent: 6500994 (2002-12-01), Brosch et al.
patent: 2002/0125122 (2002-09-01), Braun et al.
patent: 2098245 (1993-12-01), None
patent: 2100594 (1994-02-01), None
patent: 2342925 (2000-03-01), None
patent: 19940104 (2000-03-01), None
patent: 10029283 (2000-12-01), None
patent: 0370688 (1990-05-01), None
patent: 0511612 (1992-11-01), None
patent: 0511612 (1992-11-01), None
patent: 0512502 (1992-11-01), None
patent: 0512502 (1992-11-01), None
patent: 0574756 (1993-12-01), None
patent: 0582494 (1994-02-01), None
patent: 0733612 (1996-09-01), None
patent: 0811591 (1997-12-01), None
patent: 1132365 (2001-09-01), None
patent: 04 300842 (1992-10-01), None
patent: WO 90/08750 (1990-08-01), None
patent: WO 97/37955 (1997-10-01), None
patent: WO 98/00381 (1998-01-01), None
patent: WO 00/14040 (2000-03-01), None
patent: WO 00/29361 (2000-05-01), None
patent: WO 01/83411 (2001-11-01), None
Yoshinaga, Masami et al, “Purification of hydrochlorofluoro-carbons and hydrofluorocarbons,”Chemical Abs. 118:No. 19, Abstract No. 191166, XP-000354050 (May 10, 1993).

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