Components and catalysts for the polymerization of olefins
CA 2106835 C · Owner: Morini, Giampiero · Inventors: Barino, Luisa; Baruzzi, Giovanni; Scordamaglia, Raimondo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are catalyst components for the polymerization of olefins comprising magnesium halide in active form and, supported thereon, a titanium halide or titanium halogen alcoholate and an electron-donor compound selected from the diamines of formula, (see fig. I), wherein the radicals R1 to R10 are the same or different and are hydrogen or C1-C18 hydrocarbon radicals with the proviso, that at least one of the R7 and R8 radicals and at least one of the R9 and R10 radicals are not hydrogen. Also disclosed are catalysts obtained from said catalyst components and an Al-alkyl compound, as well as catalysts obtained by reaction of an Al-alkyl compound and a diamine of formula (I) with a solid …
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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 September 23, 1993 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2015.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.