Patent ID: 7868199

Claim:
A fluorinated monomer having one of the general formula (5), (6), (9), (10), (13), (14), (17) or (18) wherein R 1 is hydrogen or a straight, branched or cyclic monovalent hydrocarbon group of 1 to 20 carbon atoms in which any constituent —CH 2 — moiety may be replaced by —O— or —C(═O)—, R 3 and R 4 are each independently hydrogen or a straight, branched or cyclic monovalent hydrocarbon group of 1 to 8 carbon atoms, R 5 and R 6 are each independently hydrogen, fluorine, methyl or trifluoromethyl, R 7 is a straight, branched or cyclic monovalent hydrocarbon group of 2 to 8 carbon atoms, W is —CH 2 — or —O—, and k 1 is 0 or 1 and k 2 is 1 or 2.