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US 4,377,705 AGranted
Perfluorodiglycidyl ethers and precursors therefor
AssigneeE. I. Du Pont de Nemours and Company
InventorsCarl G. Krespan, Thomas R. Darling
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Abstract
Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formula CF.sub.2 =CFCF.sub.2 OR.sub.F. The glycidyl ethers are useful as monomers for preparing polymers which provide crosslinking or cure sites and are stable elastomeric materials useful as sealants, caulks, and fabricated objects.
Claims3
Perfluoroglycidyl ethers of the formula ##STR33## wherein R.sub.F is:
- ##STR34## wherein R.sup.1 is a carbon-carbon bond or a linear or branched perfluoroalkylene group of 1 to 12 carbon atoms;
- Q is ##STR35## Y and Y' are --F or --CF.sub.3, provided that only one of Y and Y' can be --CF.sub.3 ;
- or ##STR36## wherein R.sup.3 is a linear or branched perfluoroalkylene group of carbon content such that the moiety ##STR37## does not exceed 15 carbon atoms;
- Y, independently, is --F or --CF.sub.3 ;
- n is 1 to 4;
- and Q is as defined above.
3 more elements
Dependencies are inferred from the claim text.