Patent ID: 8389657

Claim:
A composition comprising Formula 2 wherein R f is a linear perfluoroalkyl group having from about 1 to about 20 carbon atoms, or a mixture thereof, which is optionally interrupted by at least one oxygen atom, X 3 is oxygen or X 1 , each X 1 is independently an organic divalent linking group having from about 1 to about 20 carbon atoms, optionally containing an oxygen, nitrogen, or sulfur, or a combination thereof, G is F or CF 3 , A is an amide, j is zero or positive integer, provided that when Y is N, j is a positive integer, X 2 is an organic linking group, Y is O, N or S, h is zero when Y is N, and h is one when Y is O or S, Z is H, a straight or branched alkyl group having from about 1 to about 4 carbon atoms, or halide, and B is H or wherein R f , X 1 , X 3 , G, A, and j are as defined above.