Mixed metal alkoxide complexes and polymerization catalysts made therefrom
CA 2369174 A1 · Owner: Union Carbide Chemicals & Plastics Technology Corporation · Inventors: Job, Robert Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixed metal-containing precursor is disclosed whereby the precursor includes: a) a mixed metal component represented by the following formula: (M1M2)x(T1T2)y where M1 and M2 may be the same or different and are selected from one or more metals having a +2 oxidation state T1 and T2 may be the same , or different and are selected from one or more metals having oxidation states selected from the groups consisting of +3 +4, and +5, the molar ratio of x/y , is from about 2.5 to about 3.75 with the proviso that if M1 and M2 are both Mg then T1 and T2 cannot both be chosen from Zr and Ti+4; and b) at least one moiety complexed with component a) selected from alkoxide groups phenoxide , …
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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 29, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2022.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.