Process for the production of a catalytic component for the polymerization of olefins
CA 2039167 A1 · Owner: Kanazawa, Seizaburo · Inventors: Murata, Masahide; Nakano, Akira; Yashiro, Teruo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Summary, This invention relates to a process for the production of a catalytic component for the polymerization of olefins in particular, for, the production of a catalytic component capable of exhibiting a high polymerization activity in the polymerization of olefins and giving a polymer containing less low molecular weight components in effective manner. This process is characrerized by a process for the production of a catalytic component for the polymerization of olefins which com-, prises contacting (a) metallic magnesium (b) a halogenated hydrocarbon, represented by the general formula RX wherein R is an alkyl group ary, group or cycloalkyl group having 1 to 20 carbon atoms and (c) 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
- Filed August 27, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2012.
- 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
Timeline From CIPO dates
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.