VERFAHREN ZUR HERSTELLUNG VON VINYLIDENCHLORID

1. A process for the preparation of vinylidene chloride by eliminating hydrogen chloride from 1,1,2-trichloroethane in aqueous alkaline emulsion under superatmospheric pressure and at elevated temperature, releasing the pressure on the reacted mixture, separating the aqueous phase from the gaseous phase and working up the latter by distillation, wherein the elimination reaction is carried out under from 6 to 10 bar and at from 76 to 80 C, the pressure on the reacted mixture is released and some of the liquid phase is recycled to the reaction space, and the working up of the gaseous phase by distillation is carried out under superatmospheric pressure of from 100 to 300 mm water column.