Method for producing 1, 2-dichloroethane by direct chlorination

Details Method for producing 1, 2-dichloroethane by direct chlorination Method for producing 1, 2-dichloroethane by direct chlorination

2006-03-07

2006-03-07

Richter, Johann (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S231000

Reexamination Certificate

active

07009084

ABSTRACT:
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.

REFERENCES:
patent: 4783564 (1988-11-01), Piotrowski et al.
patent: 6229059 (2001-05-01), Motz
patent: 6252125 (2001-06-01), Porscha
patent: 199 10 964 (2000-09-01), None
patent: 1 161 406 (2001-12-01), None
patent: 1405926 (1975-09-01), None

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