Process for the preparation of halogenated hydrocarbons

摘要

The preparation of halogenated hydrocarbons consisting of at least 3 C atoms is carried out by catalytic telomerization of a haloalkane and an olefin using an amine of high boiling point as cocatalyst. The preparation of halogenated hydrocarbons consisting of at least 3 C atoms is carried out in three steps: (a) reaction between a haloalkane and an olefin using a catalyst and a cocatalyst in the required conditions to produce the halogenated compound, the cocatalyst being chosen from amines less volatile than the resulting halogenated hydrocarbon; (b) separation of the reaction mixture from step (a) in which at least a first fraction comprising the halogenated hydrocarbon and a second fraction containing the catalyst and the cocatalyst are obtained; and (c) optionally recycling at least part of the second fraction.