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Expired Canadian patentCanada

Supported titanium-containing catalyst for homo-, co-, and ter-polymerization of olefins

CA 2470179 C · Owner: Santi, Roberto · Inventors: Vallieri, Andrea; Santi, Roberto; Sommazzi, Anna

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Abstract From the Canadian patent

The present invention relates to a supported catalyst containing titanium its , preparation and its use in the homoco-, and ter-polymerization of olefininsaturated , compounds. The present invention also relates to a catalytic system comprising a supported catalyst based on titanium and a co-catalyst selected from , organo-derivatives of aluminum. More specifically the present invention , relates to a , catalyst supported on silica obtained by reacting a titanium halocarboxylate and a , magnesium halocarboxylate with an aluminum chloroakylderivative in the , presence , of a carrier consisting of high porosity silica. The above reaction essentially tales , place in the pores of the …

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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 December 6, 2002 and granted May 7, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 6, 2002
GrantedMay 7, 2013
Term endedDecember 6, 2022
Patent numberCA 2470179 C
Classification (IPC)C07F3/02 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedDec 6, 2002Patent grantedMay 7, 2013Term endedDec 6, 2022

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