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Expired Canadian patentCanada

Olefin production process

CA 1081262 A · Owner: Euteco S.P.A. · Inventors: Bertolini, Natale; Divo, Claudio; Petri, Maris

CIPO record

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Abstract From the Canadian patent

Abstract of the Disclosure This invention describes a process for producing branched C7-C9-mono-olefines by polymerizing a mixture of propylene and butenes over phosphoric acid catalysts. The invention is characterized in that (A) a stream comprising propylene, butenes and recycled olefines beyond C9 is fed to one end of an adiabiatic reaction zone containing the catalyst; (B) the operation is carried out in said zone at a temperature of 160° to 300°C and under a pressure such as to maintain the reagents and reaction products in the homogeneous liquid phase until at least 30% but not more than 70% of the fed propylene and butenes has been converted (C) the reaction products are recovered at …

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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 July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 1997.
  • 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—
GrantedJuly 8, 1980
Term endedJuly 8, 1997
Patent numberCA 1081262 A
Classification (IPC)C07C11/02 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJuly 8, 1980Term endedJuly 8, 1997

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