A process for the production of metal carboxylates and their use for thepolymerization of monomers suitable for ziegler-natta polymerization
CA 2068008 A1 · Owner: Knauf, Thomas Franz · Inventors: Knauf, Thomas Franz; Obrecht, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A b s t r a c t Metal carboxylates which may be used for the polymerization of monomers suitable for Ziegler-Natta polymerization are prepared by reaction of the organic C2-20 carboxylic acids on which the carboxylates are based with ammonia and/or amines and/or tetraalkyl ammonium hydroxides and the corresponding metal nitrates in the presence of inert organic solvents at temperatures of 0 to 150 r C Le A 28 273 - Foreign Countries
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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 May 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.