Process for the hydroformylation of ethylenically unsaturated compounds in the presence of an acid and a mono tert-phosphine
CA 2510165 A1 · Owner: Jager, Willem Wabe · Inventors: Jager, Willem Wabe; Drent, Eit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to a process for the hydroformylation of an ethylenically unsaturated compound in the presence of an acid with a pKa < +3 and a catalyst of a group VIII metal and a bidentate ligand of the formula: R1R2-P-X-P-R3R4 (I) wherein P is a phosphorus atom X represents a bivalent , organic bridging group R1, R2, R3 and R4 represent independently a substituted or unsubstituted hydrocarbyl group or R1 and R2 together with the , phosphorus atom to which they are bonded and/or R3 and R4 together with the phosphorus atom to which they are bonded represent a bivalent substituted or unsubstituted cyclic group, characterized in that the process is performed in the presence of a …
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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 December 16, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.