Preparation of polymers of carbon monoxide with one or more olefinically unsaturated compounds
CA 1315459 C · Owner: Shell Canada Limited · Inventors: Salter, James Arthur; Geuze, Maarten Marinus; Van Broekhoven, Johannes Adrianus Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of polymers of carbon monoxide with one or more olefinically unsaturated compounds, characterized in that carbon monoxide containing sulphur as sulphidic sulphur and/or iron as iron carbonyls is subjected to one or more purifying treatments by which the sulphur and/or iron contents are decreased, and in that the carbon monoxide thus purified is polymerized together with one or more olefinically unsaturated compounds by contacting the mixture with a palladium-containing catalytic composition. T11/T273
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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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
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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.