Process for the polymerization of alkenes
CA 1099249 A · Owner: Stamicarbon B.V. · Inventors: Van De Leemput,; Nooijen, Godefridus A. H.; Lambertus J.M.A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to new catalysts consisting of a chromium compound and an organometal compound of an element of Group II or III of the periodic system on a carrier, the process for preparing the catalyst and its use in polymerizing 1-alkenes containing 2 to 8 carbon atoms, optionally admixed with at most 10 mole% of at least one other 1-alkene of 2 to 8 carbon atoms.
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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 April 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
- 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.