Process for recovery of phosphorus ligand from vaporized aldehyde
CA 1259331 A · Owner: Union Carbide Corporation · Inventors: Blessing, Michael A.; Finnell, Gregory K.; Dembowski, Gregory J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved rhodium catalyzed liquid recycle hydrformylation process, the improvement which comprises selectively separating and recovering phosphorus ligand from the vaporized aldehyde product stream obtained after volatilizing and separating the aldehyde product from the catalyst containing reaction product solution of the hydroformylation process.
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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 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
- 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.