Process for making 1,2-dichloroethane
CA 1201729 A · Owner: Hoechst Aktiengesellschaft · Inventors: Scholz, Harald; Dahmen, Hubert; Schuchardt, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PROCESS FOR MAKING 1,2-DICHLOROETHANE, ABSTRACT OF THE DISCLOSURE The disclosure relates to a process for making 1,2-dichloroethane by subjecting ethylene to oxychlorination with hydrogen chloride and oxygen or air at temperatures of 200 to 250°C, under pressures to 1.7 to 5 bars in the presence of a catalyst containing copper(II)chloride deposited on a carrier and, if desired with the addition of nitrogen where-, in 1,2-dichloroethane is removed from the reaction gas by condensation and, in the event of oxygen having been used the, bulk of residual gases is recycled into the oxychlorination zone. More specifically, the ethylene is at least partially used in the form of ethylene-containing …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.