Purification of 1,1-dichloro-1-fluoroethane

Details Purification of 1,1-dichloro-1-fluoroethane Purification of 1,1-dichloro-1-fluoroethane

1993-11-29

1995-03-21

Siegel, Alan

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

Organic compounds

Halogen containing

570177, C07C 1738

Patent

active

053997964

ABSTRACT:
This invention relates to a process for the purification of 1,1-dichloro-1-fluorethane.
To remove unsaturated impurities such as 1,1-dichloroethylene and dichloracetylene the crude 1,1-dichloro-1-fluoroethane is subjected to the action of chlorine and/or of a hydracid. This treatment is carried out in the presence of a Lewis acid, or, only in the case of chlorine, by photochemical catalysis.

REFERENCES:
patent: 2560838 (1951-07-01), Arnold
patent: 2637747 (1953-05-01), McBee
patent: 4028426 (1977-06-01), Mansell
patent: 4948479 (1990-08-01), Brooks et al.
patent: 5105033 (1992-04-01), Swearingen

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