Uhde Gmbh

Vinnolit Technologie Gmbh & Co. Kg

Vinnolit Technologie Gmbh & Co.

Vintron Gmbh

Dieter Jaculi

Michael Benje

Winfried Lork

Peter Kammerhofer

Ingolf Mielke

Peter Schwarzmaier

Klaus Krejci

Manfred Stoger

Horst Ertl

Jurgen Eichler

Arend Greve

Jan Wilkens

Hermann Tropp

Helmut Grumann

Joachim Schubert

A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and alkali treatment of the 1,2-dichloroethane produced. In the process, the carbon dioxide present in the 1,2-dichloroethane-containing organic phase is, in accordance with the invention, substantially separated out from the 1,2-dichloroethane-containing organic phase before the alkali treatment.

Process for purifying 1,2-dichloroethane

The invention relates to a method for producing high purity 1,2-dichloroethane using a liquid reaction medium that is circulated and that is essentially composed of 1,2-dichloroethane and a catalyst. At least ethylene and chlorine are added to the reaction medium and a mainly chlorine-containing gas flow is dissolved in a part of the reaction medium which is essentially devoid of dissolved ethylene. The gaseous components not dissolved in this solution are removed from the solution by means of a gas-separation device and the solution from which the undissolved gas components were removed is contacted with ethylene which is present in dissolved form.

Method for producing 1, 2-dichloroethane by direct chlorination

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Burgkirchen, Germany

Dieter Jaculi