Condensation of aldehydes with ketones by multiphase reaction
CA 2370808 A1 · Owner: Oxeno Olefinchemie Gmbh · Inventors: Protzmann, Guido; Buschken, Wilfried; Wiese, Klaus-Diether
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an aldol condensation process for the preparation of an .alpha..beta.-unsaturated ketone by reacting an aldehyde with a ketone with the use of a water-soluble basic catalyst in a tubular reactor. The process employs a two liquid phase reaction system comprising a continuous phase containing the catalyst and a dispersed phase containing at least one of the aldehyde and the ketone and is conducted at a load factor of the tubular reactor of at least 0.8. The .alpha..beta.-unsaturated ketone can be produced with a high selectivity and at a high space-time yield.
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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 February 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2024.
- 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.