Use of lewis bases for activity reduction in metallocene catalyzed olefin polymerization process
CA 2126796 A1 · Owner: Cann, Kevin Joseph · Inventors: Brade, Robert Converse, Iii; Cann, Kevin Joseph; Karol, Frederick John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
31-, Use of Lewis Bases for Activity Reduction in Metallocene Catalyzed Olefin Polymerization Reactions, Abstract of the Invention Lewis Bases are used to control the activity of an olefin polymerization reaction and, if need be to substantially terminate, the entire reaction completely. Such activity reduction or termination of the reaction by the one or more Lewis Bases can be completely reversed by the simple introduction of additional cocatalyst. The use of such Lewis Bases to control static is also disclosed.
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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 June 27, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2016.
- 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.