Process for production of 1,1-dichloro-1-fluoroethane and/or 1-c

Details Process for production of 1,1-dichloro-1-fluoroethane and/or 1-c Process for production of 1,1-dichloro-1-fluoroethane and/or 1-c

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.

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