Process for preparing poly (aryl ether ketone)s
CA 1237850 A · Owner: Amoco Corporation · Inventors: Kelsey, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described herein is an improved process for preparing poly(aryl ether ketone)s by reacting a mixture of at least one bisphenol and at least one dihalobenzenoid compound or halophenol wherein the, improvement comprises providing to the reaction a, combination of sodium carbonate and/or bicarbonate and an alkali metal halide selected from potassium rubidium or cesium fluoride or chloride or, combinations thereof. S P E C I F I C A T I O N D-14,670
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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.