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US 5,210,233 AGranted
Cyclic perfluoropolyether
AssigneeE. I. Du Pont de Nemours and Company
InventorsWilliam B. Farnham, Ming-Hong Hung
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Abstract
Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, novel cyclic ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
Claims7
A cyclic ether of the formula ##STR5## wherein R.sup.4 is perfluoroalkylene or perfluoroalkylene containing one or more ether oxygen atoms, and q is 2, 3, or 4.
Dependencies are inferred from the claim text.