Method for preparing ethyl vanadate
CA 1062720 A · Owner: Muntz, Ronald L. · Inventors: Lerner, Robert W.; Muntz, Ronald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process is provided for preparing ethyl vanadate. The process includes reacting vanadium oxytrichloride with ethanol under substantially anhydrous condition in a mole ratio of vanadium oxytrichloride to ethanol of from 1:1 to 1:6 and at a temperature of from 0 to 80°C in the presence of ammonia. The improvement involves conducting the reaction in the presence of a hydrocarbon solvent and includes the subsequent step of adding an amide selected from the class consisting of formamide and methyl formamide which forms two liquid phases one phase containing the ethyl vana-, date and the other containing the undisolved ammonium chloride the hydro-, carbon solvent being immiscible with …
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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 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
- 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.