Production and utilization of tri-(beta-branched alkyl)aluminum compounds
CA 2264049 A1 · Owner: Lin, Kaung-Far · Inventors: Lin, Kaung-Far
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Processes are described for the production and use of tri(beta-branched alkyl)aluminum compounds. In a preferred embodiment a process of this , invention involves dimerizing one or more vinylolefin monomers with an alkyl aluminum catalyst to form a first product mixture comprising at least vinylolefin monomer, trialkylaluminum in which each alkyl group has the same number of carbon atoms and skeletal structure as said vinylolefin monomer and , vinylidene olefin. The vinylolefin monomer is then removed while concurrently the trialkylaluminum and vinylidene olefin are converted to tri-(beta-branched alkyl)aluminum by reactive distillation. Reactive distillation effects a shift of the …
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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 August 26, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2019.
- 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
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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.