Catalyst for the polymerization of alpha-olefins
CA 1057273 A · Owner: Snamprogetti S.P.A. · Inventors: Cesca, Sebastiano; Bruzzone, Mario; Bertolini, Guglielmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The polymerization of alpha-olefins is improved by carrying the polymerization reaction in the presence of a catalytic system consisting of (a) an aluminum compound represented by the formula AlR3 or AlRxY3-x in which R is an alkyl aryl or cyclo-, alkyl radical, Y is a halogen or hydrogen and x is a number between 1 and 2, and (b) the combination product of titanium trichloride and an isostructural chloride of another transition metal selected from the group consisting of V Mn, Co and Fe, this product being supported on a carrier having at high superficial area and selected among rare earth oxides; the weight ratio between components (a) and (b) of the catalytic system ranges from 4 to 17. …
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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 June 26, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 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.