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US 6,211,319 B1Granted
Perfluoroelastomer composition having improved processability
AssigneeE. I. Du Pont de Nemours and Company
InventorWalter Werner Schmiegel
Life of this patent
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Abstract
Perfluoroelastomer compositions of improved processability are provided which have reduced levels of ionized or ionizable polymer endgroups.
Claims17
A perfluoroelastomer composition comprising copolymerized units of (1) a perfluoroolefin, (2) a perfluorovinyl ether selected from the group consisting of perfluoro(alkyl vinyl) ethers, perfluoro(alkoxy vinyl) ethers, and mixtures thereof, and (3) a cure site monomer, wherein the perfluoroelastomer is substantially free of i) ionized or ionizable endgroups, ii) bromine-containing endgroups, and iii) iodine-containing endgroups.
Dependencies are inferred from the claim text.