| abstract |
The invention relates to a continuous process for the gas phase production of trichlorotrifluoroethane, dichlorotetrafluoroethane u. Monochloropentafluoaethan in certain proportions, starting from chlorine, hydrofluoric acid and tetrachlorethylene in the presence of a catalyst and is characterized by the combination of two chlorination fluorination reactor, which are arranged in series, with a parallel to this arranged fluorination dismutation reactor and a separation unit, the recovery the desired products and the return of recovered hydrofluoric acid and non-fluorinated or insufficiently fluorinated products, in particular dichlorotetrafluoroethane having less than 7% asymmetric isomers and trichlorotrifluoroethane having less than 2% asymmetric isomers. |