Method for preparing an oxidation catalyst
CA 1069875 A · Owner: Monsanto Company · Inventors: Raffelson, Harold; Robinson, Warn D.; Mount, Ramon A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention teaches a dispersion which comprises a dispersoid which comprises a finely divided phosphorus-vanadium-oxygen precursor having a phosphorus to vanadium atom ratio of between about 0.9:1 and about 2:1 wherein a substantial amount of the vanadium is tetravalent vanadium, a liquid chemically inert with the dispersoid and at least about 0.01 weight percent of a surfactant selected from the group consisting of anionic, nonionic, zwitterionic, and ampholytic compounds and mixtures thereof. The use of a surfactant results in the phosphorus-vanadium-oxygen catalyst precursor being finely divided with the resulting catalyst exhibiting improved results in yield of the product.
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 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.