Hydroformylation process
CA 1066721 A · Owner: Celanese Corporation · Inventors: Maddox, Larry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of Disclosure The Invention relates to a process for the preparation of aldehydes by the hydroformylation of olefins using a catalyst solution containing a rhodium coordination complex. The catalyst life is extended by selectively prehydrogenating the commercially available olefin feed to decrease the effect of unidentified catalyst poisons ordinarily contained therein. Prehydrogenation is performed under sufficiently mild conditions to avoid hydrogenating substantial amounts of the olefin.
Read the whole patent
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 November 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 20, 1996.
- 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.