Synthesis of 1,1-dichloro-1,2,2,2-tetrafluoroethane

Details Synthesis of 1,1-dichloro-1,2,2,2-tetrafluoroethane Synthesis of 1,1-dichloro-1,2,2,2-tetrafluoroethane

1989-12-18

1991-10-08

Siegel, Alan

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

Organic compounds

Halogen containing

C07C 1708

Patent

active

050556240

ABSTRACT:
The invention relates to the selective manufacture of 1,1-dichloro-1,2,2,2-tetrafluoroethane by catalytic fluorination of 1,1,1-trichloro-2,2,2-trifluoroethane with anhydrous hydrofluoric acid.
The reaction is carried out in the liquid phase at a temperature of between 70.degree. and 170.degree. C. and under a pressure of between 10 and 80 bars absolute, in the presence of an antimony-containing catalyst.

REFERENCES:
patent: 2058453 (1936-10-01), Holt et al.
patent: 2748177 (1956-05-01), Miller et al.

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