Process for the combined preparation of chlorinated hydrocarbons and a carbonate of an alkali metal
CA 1210562 A · Owner: Akzo N.V. · Inventors: Albers, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the combined production of chlorinated hydrocarbons by oxychlorination of olefins in liquid phase and a carbonate of an alkali Metal by carbonatation of an alkali metal chloride use is made of an aliphatic amine as a chlor-transferring agent in recycle operation. The amine should have hydrogen-free carbon atoms in the .alpha.-position and exhibit a specified low decomposition rate. The preferred amine is t-butyl amine.
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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 September 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 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
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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.