Polymerisation process
CA 1046696 A · Owner: Imperial Chemical Industries Limited · Inventors: Jones, Eric; Walker, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the dispersion polymerisation or copolymerisation of olefins, especially ethylene alone or with an .alpha.-olefine, which is conducted in the presence of a surfaceactive compound containing one or more perfluorocarbon groups and, optionally, one or more hydrophilic groups to reduce, fouling of the reactor with adherent polymer particles. Particularly effective when olefins are polymerised with supported transition metal hydrocarbyl catalysts in non-polar hydrocarbon diluents.
Read the whole patent
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 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 1996.
- 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.