Process for the preparation of perfluoroacyl fluorides
CA 1303062 C · Owner: Castellan, Arsenio · Inventors: Pasquale, Antonio; Castellan, Arsenio; Cuzzato, Paolo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of a perfluoroacyl fluoride wherein the acyl radical is a propionyl or butyryl group, characterized in that perfluoroalkylvinylether wherein the alkyl radical is a methyl or ethyl group is thermally treated in the presence of a catalyst selected from the group consisting of:, A) a fluoride of Li Na, K, Cs or Rb, or another, compound of Li Na, K, Cs or Rb which can easily been, fluorinated under the reaction conditions; B) a fluoride of Be, Mg, Ca, Sr or Ba, or another compound of Be, Mg, Ca, Sr or Ba which is easily fluorinatable under the reaction conditions; C) a fluoroaluminate, fluorosilicate, fluorotitanate or fluorometallate or an alkali metal or of a …
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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 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.