Process for the preparation of 1-chloro-1-fluoroethane and/or 1,1-difluoroethane
AssigneeSolvay (Societe Anonyme)
InventorsPascal Pennetreau, Francine Janssens
Life of this patent
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Abstract
The invention relates to a process for the preparation of 1-chloro-1-fluoroethane and 1,1-difluoroethane by reaction of vinyl chloride with hydrogen fluoride, in an organic solvent consisting of at least one saturated halogen-containing hydrocarbon.
Claims20
A process for the manufacture of 1,1-difluoroethane (HFC-152a), which comprises reacting vinyl chloride with hydrogen fluoride in a liquid reaction mixture which contains an organic solvent consisting of at least one saturated organic halogenated hydrocarbon, under conditions sufficient to form HFC-152a, and withdrawing at least HFC-152a from the reaction mixture.
A continuous process for the manufacture of 1,1-difluoroethane (HFC-152a), which comprises reacting vinyl chloride with hydrogen fluoride in a liquid phase which contains an organic solvent consisting of at least one saturated organic halogenated hydrocarbon, under conditions sufficient to form HFC-152a and hydrogen chloride and at least partially withdrawing hydrogen chloride from the reaction mixture.
Dependencies are inferred from the claim text.