Removal of monochloroacetylene from chlorinated hydrocarbons
AssigneePPG Industries, Inc.
InventorJohn Douglas Mansell
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Abstract
Monochloroacetylene occurring as an impurity in 1,1-dichloroethylene is removed by chemical reaction in the presence of an aqueous HCl/cuprous chloride catalyst composition.
Claims8
A method of reducing the monochloroacetylene content of liquid saturated or ethylenically unsaturated chlorohydrocarbons which comprises contacting said chlorohydrocarbons with a liquid catalyst composition comprising cuprous halide and aqueous haloid acid selected from HCl, HBr, HI at a temperature and pressure which mmaintains the catalyst in liquid form.
A method of reducing the monochloroacetylene content of liquid saturated or ethylenically unsaturated chlorohydrocarbons by distillation of the monochloroacethylene from said chlorohydrocarbons and subsequent chemical conversion of the monochloroacethylene;
- wherein the improvement comprises:
- contacting the distilled monochloroacetylene with a liquid catalyst composition comprising cuprous halide and aqueous haloid acid selected from HCl, HBr, and HI at a temperature and pressure which maintains the catalyst composition in liquid form.
Dependencies are inferred from the claim text.