DEACTIVATION OF CATALYST IN SOLUTION PROCESS FOR POLYMERIZATION OF .alpha.-OLEFINS
CA 1268297 C · Owner: Du Pont Canada Inc. · Inventors: Zboril, Vaclav George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solution polymerization process for the preparation of high molecular weight polymers of alphaolefins selected from the group consisting of homopolymers of ethylene and copolymers of ethylene and C3 -C12 alpha-olefins is disclosed. The process comprises feeding monomer(s) coordination catalyst and inert hydrocarbon solvent to a reactor, polymerizing the monomers at a temperature of up to 320°C and a pressure of less than 25 MPa and deactivating, the catalyst in the solution so obtained. The catalyst is deactivated by sequentially admixing therewith (a) a minor amount of a first deactivator, (b) a solution of a salt of an alkaline earth metal or zinc and an aliphatic monocarboxylic acid …
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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 April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.