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US 4,594,399 AGranted
Cyclic monomers derived from trifluoropyruvate esters, amended to polymers and polymer films from dioxoles
AssigneeE. I. Du Pont de Nemours and Company
InventorsBurton C. Anderson, David C. England, Paul R. Resnick
Life of this patent
Estimating the term…
Abstract
Perhalogenated dioxoles, halogenated dioxolanes, a process for making the dioxoles and dioxolanes, and polymers of dioxole and dioxolane monomers.
Claims10
A polymer of a dioxole of the formula:
- ##STR26## wherein Y.sub.1, Y.sub.2 and Y.sub.3, independently, are F or Cl, and R.sub.F is perfluoroalkyl of 1 to 4 carbons.
A copolymer of a dioxole of the formula:
- ##STR27## wherein Y.sub.1, Y.sub.2 and Y.sub.3, independently, are F or Cl, and R.sub.F is perfluoroalkyl of 1 to 4 carbons;
- and tetrafluoroethylene.
A copolymer of a dioxole of the formula:
- ##STR28## wherein Y.sub.1, Y.sub.2 and Y.sub.3, independently, are F or Cl;
- and tetrafluoroethylene.
A coating solution comprising a copolymer of a dioxole of the formula:
- ##STR29## wherein Y.sub.1, Y.sub.2, and Y.sub.3 are, independently, F or Cl, and R.sub.F is perfluoroalkyl of 1 to 4 carbon atoms;
- and tetrafluoroethylene.
Dependencies are inferred from the claim text.