Sulfonyl catalysts and method of using the same
CA 2336348 A1 · Owner: Equistar Chemicals, Lp · Inventors: Etherton, Bradley P.; Tyrell, John; Nagy, Sandor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel metallocene catalyst for the polymerization of olefin (co)polymers is of the general formula: R-SO2-L-M-(X)mTn wherein M is a metal selected from , Groups 3-10; T is a polymerization-stable anionic ancillary ligand; m+n is the valency of M minus 1; R is a C1-C20 alkyl group a C6-C20 aryl ring or a C6-, C20 alkaryl or aralkyl group optionally substituted with a halogen or an alkoxy group up to 10 carbon atoms; X is a halogen alkoxy from C1 to C20, siloxy from C1 to C20 N(R)2, a hydrocarbyl group containing up to about 12 carbon atoms, hydrogen or another univalent anionic ligand or mixtures , thereof; L is T as defined above with the proviso that one of the sites available for …
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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 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 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.