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US 5,401,818 AGranted
Fluorovinyl ether
AssigneeDaikin Industries, Ltd.
InventorsMasahiko Oka, Mitsuru Kishine, Hideya Saito, Masuo Kokumai
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Abstract
A fluorovinyl ether of the formula: R.sub.f --(OCF.sub.2 CF.sub.2 CF.sub.2).sub.n --OCF.dbd.CF.sub.2(I) wherein R.sub.f is a C.sub.1 -C.sub.5 perfluoroalkyl group, n is an integer of 1 to 4 provided that when n is 1 (one), R.sub.f is other than a trifluoromethyl group, a copolymer of which with an ethylenically unsaturated compound has a low glass transition temperature and improved low temperature properties.
Claims3
A copolymer comprising repeating units derived from a fluorovinyl ether of the formula:
- R.sub.f --(OCF.sub.2 CF.sub.2 CF.sub.2).sub.n --OCF.dbd.CF.sub.2 (I)
- wherein R.sub.f is a C.sub.1 -C.sub.5 perfluoralkyl group, n is an integer of 2 to 4 and the repeating units are derived from at least one ethylenically unsaturated compound.
Dependencies are inferred from the claim text.