Patent ID: 6887624

Claim:
A composition comprising a saturated acyclic aliphatic hydrocarbon radical, said hydrocarbon radical having disposed thereupon at least one pendant group represented by the formula wherein said hydrocarbon radical is optionally substituted with one or more ether oxygens; wherein R f is represented by the formula â€”Qâ€”O a â€”(CF 2 CFR f â€²â€”O b ) c CF 2 CF 2 â€” where a=0 or 1, b=0 or 1, c=0,1 or 2; â€”Qâ€” is represented by the formula â€”CZ 2 CZ 2 â€” where Z is H, F, alkyl or fluoroalkyl with the proviso that not more than one Z may be alkyl or fluoroalkyl: R f â€² is F or a perfluoroalkyl radical having 1-10 carbons optionally substituted by one or more ether oxygens; X is F or â€”Y(M)(SO 2 R f â€³) p wherein p=0-2, with the proviso that Y is O when p=0, Y is N when p=1, and Y is C when p=2, M is an alkali metal cation or H + , and R f â€³ is a perfluoroalkyl radical having 1-10 carbons optionally substituted with one or more ether oxygens, or R f â€³ is CN when p=2.