Catalyst composition and olefin/co copolymerization process
CA 1308847 C · Owner: Drent, Eit · Inventors: Drent, Eit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of polymers characterized, in that a mixture of carbon monoxide with one or more olefinically unsaturated compounds is polymerized at a temperature below 115°C by using a catalyst composition based upon a) a palladium compound, b) an anion of an acid with a pKa of from 2 to 4 and, c) a bidentate ligand of the general formula R1R2M-R- MR3R4, wherein M represents phosphorus arsenic or antimony, R1, R2, R3 and R4 are similar or dissimilar hydrocarbyl groups and R, represents a bivalent organic bridging group containing at least two carbon atoms in the bridge.
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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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
- 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.