Preparation of organic phosphinites
CA 1290763 C · Owner: Akzo America Inc. · Inventors: Telschow, Jeffrey E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The instant invention is directed to a process for producing organic phosphinites by a process wherein a disubstituted halophosphine is reacted with a primary secondary, or tertiary alcohol or phenol in the presence of a tertiary amine base wherein the reaction is conducted at a temperature of from about ambient. The invention is particularly directed to the preparation of isopropyl diphenylphosphinite.
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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.