Process for preparation of condensed alcohols by alkoxide catalysis
CA 2034762 A1 · Owner: Young, David A. · Inventors: Young, David A.; Jung, John A.; Mclaughlin, Mark L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Condensed dimer alcohols also known as Guerbet, alcohols, are prepared using metal alkoxide as the catalyst by reacting alcohol with saturated or unsaturated aldehyde or allyl alcohol, or mixtures thereof, at 100°C-220°C and removing water as it is formed during the reaction. Dimer alcohols are prepared in high yields without the need for a transition metal catalyst.
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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 January 22, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2013.
- 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.