Process for the preparation of halo-olefins

Details Process for the preparation of halo-olefins Process for the preparation of halo-olefins

2010-04-07

2011-10-25

Parsa, Jafar (Department: 1621)

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

Organic compounds

Halogen containing

C570S230000

Reexamination Certificate

active

08044251

ABSTRACT:
Described is a process for preparing a halo-olefin comprising contacting a halogenated hydrocarbon with a metal dehalogenating agent, in a solvent, in the presence of a phase transfer catalyst, under conditions sufficient to dehalogenate said halogenated hydrocarbon to produce a product stream comprising said halo-olefin. In one embodiment, the halogenated hydrocarbon is trifluorotrichloroethane and the halo-olefin is chlorotrifluoroethylene.

REFERENCES:
patent: 4560759 (1985-12-01), Hiratani
patent: 7164050 (2007-01-01), Cottrell et al.
patent: 1801090 (2007-06-01), None
patent: 2272017 (2006-03-01), None
patent: 2006108331 (2005-11-01), None
CN 1566048 abstract, Xu et al, 1,2-dichloro-2,2-difluoroethane, 2003.

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