Olefin polymerization process and catalyst therefor
CA 1091645 A · Owner: Union Carbide Corporation · Inventors: Noshay, Allen; Karol, Frederick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High activity catalysts which have a high response to hydrogen and which are used for the polymerization of ethylene and the copolymerization of ethylene with other olefins to form resins having a narrow molecular weight distribution are prepared by depositing selected chromocene and fused ring organochromium compounds on a fluorided silica support which has a relatively low temperature heat history. -1-
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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 December 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 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.