Process for preparing polyolefins
CA 1134801 A · Owner: Nippon Oil Co. Ltd. · Inventors: Matsuura, Kazuo; Miyoshi, Mituji; Tajima, Yoshio
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 using a new catalyst. According to this invention, .alpha. -olefins can be polymerized or copolymerized in good stereoregularity and in high activity by the use of such new catalyst. The new catalyst broadly consists of A a solid component obtained by contacting (1) a magnerium oxide (2) an aluminum tri-, halide, the aluminum trihalide being used in an amount of 0.001 to 10 mol of the magnesium oxide, (3) a hydroxy compound represented by the general formula ROH wherein R is an organic radical having 1 to 20 carbon atoms the, hydroxy compound being used in an amount of 0.001 to 5 mols per mol of the magnesium oxide, and (4) a titanium halide …
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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 November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.