Process for preparing polyolefins
CA 1078365 A · Owner: Nippon Oil Co. Ltd. · Inventors: Kuroda, Nobuyuki; Matsuura, Kazuo; Nakamura, Toru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for preparing polyolefins by polymerizing or copolymerizing olefins in the presence of a particularly recited novel catalyst. The catalyst comprises a solid component and an organometallic compound. The solid component is obtained by copulverizing (1) a magnesium halide (2), a compound represented by the general formula Al(OR)mX3-m wherein R is alkyl, and/or aralkyl having 1 to 20 carbon atoms and may be the same or different X is halogen and O < m ?3, (3) a tetravalent titanlum compound and (4) a, trivalent titanium compound the trivalent titanium compound being present in a solar ratio with the tetravalent titanium compound of from 50:1 to 1:50. The organometallic …
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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 May 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 1997.
- 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.