Process for preparing metallocene complexes
CA 1307002 C · Owner: Buhler, Niklaus · Inventors: Berner, Godwin; Lohse, Friedrich; Buhler, Niklaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
K -13926/+/B, Process for preparing metellocene complexes Abstract of the Disclosure, The invention provides an improved process for the preparation of compounds of formula Ia (Ia), wherein R1 is a .pi.-arene, R2' is an anion of a .pi.-arene L is, a divalent to heptavalent metal or non-metal Q is a halo-, gen atom, q is an integer from 1 to 3 and m is an integer corresponding to the valency of L+q, said process comprising reacting an uncharged .pi.-complex of the formula IIIa (IIIa), with a .pi.-arene R1 in the presence of Al and a Lewis-acid followed by treatment with an acid or a salt of an acid of the anion LQmq-, in which process the improvement consists essentially of using TiCl4 as a …
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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 September 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 2009.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.