Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
AssigneeE. I. Du Pont de Nemours and Company
InventorCarl G. Krespan
Life of this patent
Estimating the term…
Abstract
The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorcarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy carboxylic acid fluoride or sulfonyl fluoride, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.2 SO.sub.2 F. The polyfluoroallyloxy compounds copolymerize with ethylenically unsaturated monomers such as tetrafluoroethylene, chlorotrifluoroethylene or vinylidene fluoride to form polymers which are moldable, and in some cases electrically conducting or are water-wettable and dyeable.
Claims12
A polyfluoroallyloxy compound having the formula:
- ##STR69## wherein X is --Cl or --F, and
- R.sub.F is:
- ##STR70## wherein R.sup.1 is a carbon-carbon bond or a linear or branched perfluoroalkylene group of 1 to 12 carbon atoms;
- Q is --SO.sub.2 F or --COF;
- Y and Y', independently, are --F or --CF.sub.3 providing that only one of Y and Y' can be --CF.sub.3 ;
- or
- (ii) --CF(CF.sub.2 COF).sub.2, or ##STR71## wherein R.sup.3 is a linear or branched perfluoroalkylene group of carbon content such that the moiety ##STR72## does not exceed 15 carbon atoms;
- Y is --F or --CF.sub.3 ;
- n is 1 to 4;
- and Q' is defined as for Q above;
- or ##STR73##
Dependencies are inferred from the claim text.