PREPARATION OF POLYPHENYLENE OXIDE USING A MANGANESE (II) .omega.-HYDROXYOXIME CHELATE REACTION CATALYST
CA 1066845 A · Owner: General Electric Company · Inventors: Olander, Walter K.
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 polyphenylene oxide employing a manganese(II) .omega.-hydroxyoxime chelate catalyst is described. The process can be effectively carried out both in the absence as well as in the presence of amines. The process is economical and useful in the production of polyphenylene oxide resins.
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 November 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 20, 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.