Process for polymerizing a monomer charge
CA 1264400 C · Owner: Usi Chemicals Co Inc. · Inventors: Aylward, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Process of polymerizing a monomer charge including ethylene by (1) drying an inorganic oxide having surface hydroxyl groups to form a support that is substantially free of adsorbed water, (2) reacting the surface hydroxyl groups of the support with at least about 0.5 mol per mol of, surface hydroxyl groups, of at least one organometallic compound corresponding to the formula RxMR'yR"z wherein M is, a metal of Group III of the periodic table R is an alkyl, group containing 1 to 12 carbon atoms R' and R" are, independently selected from the group consisting of H Cl, and alkyl and alkoxy groups containing 1 to 12 carbon atoms x has a value of 1 to 3, and y and z …
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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 9, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 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.