Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1989-07-13
1991-02-26
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
C77C 1720
Patent
active
049963783
ABSTRACT:
1,1-Dichloro-1-fluoroethane and/or 1-chloro-1,1-difluoroethane are selectively produced by fluorination of 1,1,1-trichloroethane. Conditions in a first reaction zone selected to preferentially form 1,1-dichloro-1-fluoroethane. The reaction effluent is split between a 1,1-dichloro-1-fluoroethane recovery system, and a second reaction zone. The effluent from the latter is routed to 1-chloro-1,1,-difluoroethane recovery system. The second reaction zone conditions are selected for form 1-chloro-1,1-difluoroethane. The ratio of product formed by the overall process may be varied from up to 98% 1,1-dichloro-1-fluoroethane to greater than 98% 1-chloro-1,1-difluoroethane.
REFERENCES:
patent: 3833676 (1974-09-01), Ukaji et al.
Wagner Barry L.
Wright Danny W.
Atochem North America, Inc.
Siegel Alan
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