Process for polymerizing or copolymerizing olefins
CA 1184348 A · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Ushida, Yoshihisa; Kashiwa, Norio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for polymerizing or copolymerizing olefins. which comprises polymerizing or copolymerizing olefins in the presence of a catalyst composed of, (A) a solid titanium catalyst component obtained by reacting (i) a titanium composition composed essentially or tetravalent titanium, magnesium, halogen and an electron donor or electron donor residue selected from the group consisting of organic acid esters, alkoxy groups and aryloxy groups with (ii) an organic silicon compound having an Si-O-C bond in the molecule in the presence of (iii) an organoaluminum compound, or by first treating the titanium composition (i) with the organoaluminum compound (iii) and then reacting it with the …
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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 March 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2002.
- 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.