Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydr

Details Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydr Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydr

1990-09-19

1992-02-25

Evans, J. E.

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

Organic compounds

Halogen containing

570168, 570169, C07C 1720, C07C 1902

Patent

active

050916017

ABSTRACT:
A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.

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patent: 3787331 (1974-01-01), Groppelli et al.
patent: 3793229 (1974-02-01), Groppelli et al.
patent: 4088704 (1978-05-01), Nychka et al.
patent: 4147733 (1979-04-01), Fiske et al.
patent: 4843181 (1989-06-01), Gumprecht et al.
PTO Form 892 dated Oct. 18, 1989.

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