Metal complexes as catalyst component for olefin polymerization
CA 2361719 A1 · Owner: Bochmann, Manfred · Inventors: Bochmann, Manfred; Sarsfield, Mark John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel nitrogen containing transition metal complexes have general formula (I): wherein M is FeII, FeIII, NiII, CoI, CoII CoIII, VIII, MnI, MnII, MnIII, MnIV, RuII RuIII or RuIV; PdII, VIII, VIV or , VV. X represents an atom or group covalently or ionically bonded to the transition metal M; R is independently selected from hydrogen halogen, hydrocarbyl, substituted hydrocarbyl heterohydrocarbyl or substituted , heterohydrocarbyl; Z is a bridging group comprising a donor atom of N P or S , or alternatively is a neutral group comprising a C1-C4 alkylene group a silyl , or germyl group, and n = an integer to satisfy the valency of M. The complexes are suitable for use on the polymerisation …
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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 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.