Components and catalysts for the polymerization of olefins
CA 2111308 A1 · Owner: Spherilene S.P.A. · Inventors: Sacchetti, Mario; Cuffiani, Illaro; Pennini, Gianni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to spherical solid catalyst components for the polymerization of olefins comprising a tita-, nium compound, supported on a magnesium halide containing, more than one Ti-halogen link and optionally containing groups different from halogen in an amount lower than 0.5 mole per mole of Ti. Spherical solid compounds of the invention are characterized by having a surface area, measured by the BET method of lower, than 70 m2/g, a total porosity measured by the mercurium, method, higher than 0.5 cm3/g and a pore radius such that at least 50% have values higher than 800 .ANG..
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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 13, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2015.
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Timeline
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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.