Hydrogen halide production

Claim 1

THE PROCESS FOR THE PRODUCTION OF HIGH PURITY HYDROGEN CHLORIDE WHICH COMPRISES REACTING HYDROGEN WITH CHLORINE IN A MOL RATIO OF CHLORINE TO HYDROGEN OF AT LEAST 1.5 THEREBY FORMING A MIXTURE OF HYDROGEN CHLORIDE AND CHLORINE SUBSTANTIALLY FREE OF FREE HYDROGEN, ADDING PROPYLENE TO SAID MIXTURE IN AN AMOUNT OF AT LEAST EQUAL TO THE STOICHIOMETRICAL EQUIVALENT OF CHLORINE IN SAID MIXTURE, SUBJECTING THE RESULTING MIXTURE COMPRISING HYDROGEN CHLORIDE, CHLORIDE AND PROPYLENE TO SELECTIVE PROPYLENE CHLORO-SUBSTITUTING CONDITIONS EFFECTING THE SELECTIVE CHLORINATION OF PROPYLENE BY ALLYLIC SUBSTITUTION WITH THE FORMATION OF A REACTION MIXTURE CONSISTING ESSENTIALLY OF HYDROGEN CHLORIDE AND CHLORINATED HYDROCARBONS COMPRISING ALLYL CHLORIDE SUBSTANTIALLY FREE OF FREE CHLORINE AND FREE HYDROGEN, AND FRACTIONATING HIGH PURITY HYDROGEN CHLORIDE FROM SAID REACTION MIXTURE.