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Expired Canadian patentCanada

Process for the polymerization of alpha-olefins catalyst employed in said process and method for the preparation thereof

CA 1077461 A · Owner: Bertolini, Guglielmo · Inventors: Bertolini, Guglielmo; Greco, Alberto; Bruzzone, Mario

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Abstract From the Canadian patent

The present invention relates to a process for the polymerization of alpha-olefins by means of a catalytic system constituted by a) a compound selected from alkyl halides alkyl-, derivatives or hydrides of metals belonging to the first three groups of the Periodic System and b) the combination product of a chloride of a transition metal selected among Mn Co, V and, Fe, with titanium trichloride which combination product is fi-, nely dispersed on a carrier selected from the halides of metals belonging to the 1st and 2nd groups of the Periodic System. The weight ration between components a) and b) is in the range of from 4 to 120. The invention also relates to the catalytic system as such and …

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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 May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 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—
GrantedMay 13, 1980
Term endedMay 13, 1997
Patent numberCA 1077461 A
Classification (IPC)C08F4/70 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 13, 1980Term endedMay 13, 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.