C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/663.2
C07C 19/045 (2006.01) C07C 17/02 (2006.01) C07C 17/38 (2006.01) C07C 17/383 (2006.01)
Patent
CA 1227496
PROCESS FOR MAKING 1,2-DICHLOROETHANE ABSTRACT OF THE DISCLOSURE The disclosure relates to a process for making 1,2-di- chloroethane by reacting ethylene with chlorine in a solvent in the presence of a catalyst mixture consisting of anhydrous iron(III)chloride and a nitrogen base or a salt of said base at a temperature lower than the boiling point of 1,2-dichloro- ethane. To this end, the disclosure provides: a) for the chlorination mixture to be introduced into a distilling column, for 1,2-dichloroethane to be distilla- tively separated from said mixture until the catalyst commences precipitating from liquid base product, for said catalyst to be separated from said base product, and for the catalyst so separated to be re-used for reacting further ethylene with chlorine in contact therewith, or b) for the chlorination mixture to be passed over an adsorbent, for the catalyst contained in said mixture to be adsorbed on the adsorbent, for 1,2-dichloroethane to be distillatively separated from resulting filtrate and for the catalyst to be recovered from the adsorbent by extraction with a solvent, or c) for the chlorination mixture to be subjected to the processing treatment set forth under a) and for base product containing minor proportions of catalyst to be discarded.
442868
Hennen Hans
Hundeck Joachim
Scholz Harald
Fetherstonhaugh & Co.
Vinnolit Monomer Gmbh & Co. Kg
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