Process for producing olefin polymer
CA 1264159 C · Owner: Sasaki, Toshio · Inventors: Shiga, Akinobu; Sasaki, Toshio; Kojima, Junpei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing an olefin polymer which comprises homopolymerizing or copolymerizing an olefin in the presence of a catalyst system composed of an organoaluminum compound and a hydrocarbyloxy group-containing solid catalyst component which is prepared by reducing a titanium compound represented by the general formula Ti(OR1)nX4-n, wherein R1 is a C1-C20 hydrocarbon radical, X is halogen, and n is a number defined as 0 < n ? 4, with an organoaluminum compound represented by the general formula A?R2mY3-m, wherein R2 is a C1-C20 hydrocarbon radical Y, is halogen, and m is a number defined as 1 ? m ? 3 subjecting, the reduction product which is a hydrocarbyloxy group-containing solid …
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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 2, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2007.
- 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.