Process for the preparation of perfluoroacyl fluorides
US4814113A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Sep 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/58
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
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: PA1 (A) a fluoride of Li, Na, K, Cs or Rb, or another compound of Li, Na, K, Cs or Rb which is easily fluorinated under the reaction conditions; PA1 (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: PA1 (C) a fluoroaluminate, fluorosilicate, fluorotitanate or fluorometallate of an alkali metal, or of a metal belonging to group IIA of the Periodic Table, i.e., compounds consisting of fluorine, an alkali metal and a transition metal, or a compound which is easily fluorinatable to yield one of the above-said fluoroaluminates, fluorosilicates, fluorotitanates or fluorometallates under the reaction conditions; PA1 (D) a fluoride of a metal of the first transition series, or the corresponding metal, or another compound of such a metal which is easily fluorinatable under the reaction conditions;…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.