Reductive coupling process
CA 1050475 A · Owner: Monsanto Company · Inventors: Heckle, William A.; Mathews, Marion J. (Iii); Campbell, Charles R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an improvement in a process in which olefinic reactants having the formula R2C=CR-X in which -X is -CN, -CONR2 or -COOR' R is hydrogen, or R' and R' is C2-C4 alkyl are reductively coupled by electrolyzing a liquid aqueous medium having a pH of 2-12 and at a temperature of between 5-75°C containing the reactants in an electrolysis zone and a heavy metal passes into the medium during the electrolysis in an amount substantially greater than that soluble in the initial electrolysis medium the improve-, ment which comprises adding sufficient free heavy metal sequesterant to the medium during the electrolysis to maintain the heavy metal passed into the medium during …
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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 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 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.