Aluminoboronate activators for single-site olefin polymerization catalysts
CA 2449133 A1 · Owner: Lynch, Michael W. · Inventors: Lynch, Michael W.; Meverden, Craig C.; Neal-Hawkins, Karen L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Single-site catalyst systems useful for polymerizing olefins are disclosed. The catalyst systems comprise an organometallic complex and an activator. The complex includes a Group 3-10 transition metal M, and at least one , indenoindolyl ligand that is pi-bonded to M. The activator is a reaction product of an alkylaluminum compound and an organoboronic acid. Catalyst systems of the invention significantly outperform known catalyst systems that employ a metallocene complex and similar aluminoboronate activators.
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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 May 9, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2024.
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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.