Process for purifying 1,2-dichloroethane

Details Process for purifying 1,2-dichloroethane Process for purifying 1,2-dichloroethane

2007-12-18

2007-12-18

Price, Elvis (Department: 1621)

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

Organic compounds

Halogen containing

C570S244000, C570S245000

Reexamination Certificate

active

10280704

ABSTRACT:
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.

REFERENCES:
patent: 3488398 (1970-01-01), Harpring et al.
patent: 3996300 (1976-12-01), Ahlstrom, Jr.
patent: 26 03 477 (1977-08-01), None
patent: 43 03 086 (1998-05-01), None
patent: 0 738 699 (1999-06-01), None

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