Process for polymerizing olefins and catalysts therefor
CA 1094042 A · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Kashiwa, Norio; Toyota, Akinori; Minami, Syuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a catalyst for polymerizing or copolymerising an olefin having at least 3 carbon atoms and containing 0 to 10 mole% of another olefin or diolefin, said catalyst comprising (i) a solid titanium catalyst component obtained by contacting (1) a magnesium-containing copulverization product comprising (A) an aluminum or geranium compound selected from the group consisting of aluminum compounds of the formula AlRnX3-n wherein R is a hydrogen atom, or an alkyl, alkenyl, aryl alkoxy, aryloxy or acyloxy group, optionally having a substituent X is a halogen atom, and 0<n?3, geranium compounds of the formula GeRmX4-m wherein R and X are as defined above and, 0?m?4, (B) 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 January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- 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.