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Expired Canadian patentCanada

Catalytic process for polyhydric alcohols and derivatives

CA 1046073 A · Owner: Union Carbide Corporation · Inventors: Cawse, James N.

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Abstract From the Canadian patent

This invention relates to the manufacture of such valuable chemicals as polyhydric alcohols their ether and ester derivatives, oligomers of such alcohols and monohydric alcohols and their ether and ester derivatives by reacting oxides of carbon and hydrogen in the presence of a bis(triorgano phosphine)iminium cation and a rhodium carbonyl complex provided to the reaction as a rhodium carbonyl cluster anion which possesses an infrared spectrum which exhibits three intense wavelength bands between about plus and minus 10 cm-1 of about 1868 cm-1 about, 1838 cm-1, and about 1785 cm-1 at a pressure of at least about 500 pounds per square inch absolute.

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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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 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.
Filed—
GrantedJanuary 9, 1979
Term endedJanuary 9, 1996
Patent numberCA 1046073 A
Classification (IPC)C07C29/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 9, 1979Term endedJan 9, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.