Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
AssigneeE. I. Du Pont de Nemours and Company
InventorCarl G. Krespan
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Abstract
The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorocarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy compound, 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.
Claims9
A copolymer of a polyfluoroallyloxy compound having the formula
- CF.sub.2 .dbd.CFCF.sub.2 OR.sub.F
- wherein
- R.sub.F is ##STR69## 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, --COF, --CN or --CO.sub.2 R.sup.4 where R.sup.4 is --CH.sub.3 or --C.sub.2 H.sub.5 ;
- Y and Y', independently, are --F or --CF.sub.3 and only Y and Y' can be --CF.sub.3 ;
- or
- (ii) --CF(R.sup.2).sub.2
- wherein R.sup.2 is --CF.sub.2 COF, --CF.sub.2 CN, or --CF.sub.2 CO.sub.2 R.sup.4 where R.sup.4 is defined as above;
- or ##STR70## wherein R.sup.3 is a linear perfluoroalkylene group of carbon content such that the moiety ##STR71## 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;
- and at least one ethylenically unsaturated monomer;
- said copolymer having a molecular weight sufficient to be molded into a shaped article.
A copolymer of a polyfluoroallyloxy compound having the formula
- CF.sub.2 .dbd.CFCF.sub.2 OR.sub.F
- wherein R.sub.F is:
- ##STR72## wherein R.sup.1 is a carbon-carbon bond or a linear or branched perfluoroalkylene group of 1 to 12 carbon atoms;
- Y and Y', independently, are --F or --CF.sub.3 and only Y or Y' can be --CF.sub.3 ;
- or ##STR73## wherein R.sup.3 is a linear perfluoroalkylene group of carbon content such that the moiety ##STR74## does not exceed 15 carbon atoms;
- Y is --F or --CF.sub.3 ;
- and n is 1 to 4;
- and at least one ethylenically unsaturated monomer;
- said copolymer having a molecular weight sufficient to be molded into a shaped article.
Dependencies are inferred from the claim text.