Process for purifying 1,1,1,2-tetrafluoroethane

Details Process for purifying 1,1,1,2-tetrafluoroethane Process for purifying 1,1,1,2-tetrafluoroethane

1989-03-08

1990-03-06

Evans, J. E.

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

Organic compounds

Halogen containing

570134, C07C 1739, C07C 1902

Patent

active

049067966

ABSTRACT:
R-1122 (2-chloro-1,1-difluoro-ethylene) can be substantially removed from a stream of R-134a over a zeolite or carbon molecular sieve having a mean pore size of about 3.8 to 4.8 Angstroms. Preferred are 5A synthetic zeolites or calcium chabazite.

REFERENCES:
patent: 3215747 (1965-11-01), Fainberg et al.
patent: 3804910 (1974-04-01), Furrow
patent: 3819493 (1974-06-01), Fozzard
patent: 4129603 (1978-12-01), Bell
patent: 4158675 (1979-06-01), Potter
patent: 4849558 (1989-07-01), Goodman
U.S. patent application No. 137,684, C. Chang et al.

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