Preparation of secondary amines
CA 2768834 A1 · Owner: Huntsman Petrochemical Corporation · Inventors: Nelli, Christopher H.; Su, Wei-Yang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a process for preparing a secondary amine product from a primary amine reactant, which process comprises heating a mixture , that comprises the components: a) hydrogen, b) a carbonyl compound represented by the structure: (see formula I); and , c) an amine reactant comprising one or more alkoxylated amines having a primary amine function and described by the formula: (see formula II); , to any temperature in the range of about 80°C to about 200°C and under any , pressure in the range of about 100 psig to about 3000 psig in the presence of an , effective catalytic amount of a palladium on carbon catalyst; wherein the total amount , of tertiary amine produced …
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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 July 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2025.
- 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.