Method for hydrogenating nitrile functions into amine functions
CA 2403210 A1 · Owner: Rhodia Polyamide Intermediates · Inventors: Leconte, Philippe; Boschat, Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for hydrogenating nitrile functions into amine functions. More particularly the invention concerns a method for total or partial hydrogenation of dinitrile compounds into diamine or aminonitrile compounds. The invention concerns a method for hydrogenating nitrile functions into amine functions using hydrogen and in the presence of a hydrogenation catalyst and a strong mineral base preferably derived from an alkaline or alkaline-earth metal. The invention is characterised in that the method comprises a step which consists in conditioning the catalyst by mixing the hydrogenation catalyst a specific amount of strong mineral base and a solvent wherein the strong …
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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
- Filed March 7, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 7, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2023.
- 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.