Patent ID: 7754838

Claim:
A composition comprising a copolymer having repeating units in any sequence of Formula I wherein R f is a straight or branched perfluoroalkyl group having from about 1 to about 20 carbon atoms, or a mixture thereof, X 3 is X 1 , each X 1 is independently an organic divalent linking group having from about 1 to about 20 carbon atoms, optionally containing nitrogen, or sulfur, or a combination thereof, G is F or CF 3 , A is an amide, j is zero or 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, B is H or wherein R f , X 1 , X 3 , G, A, and j are as defined above, provided that when B is H, j is a positive integer, m is a positive integer, q is zero or a positive integer when Y is O, and q is a positive integer when Y is N or S, p is zero or a positive integer when Y is O, and p is a positive integer when Y is N or S, each W is independently or [R 1 —X 1 —Y—C(O)—C(Z)—CH 2 ], wherein X 1 , Y, and Z are as defined above, Rx is C(O)O(R 1 ), C(O)N(R 2 ) 2 , OC(O)(R 1 ), SO 2 (R 1 ), C 6 (R 3 ) 5 , O(R 1 ), halide, or R 1 ; each R 1 is independently H, C n H 2n+1 , C n H 2n —CH(O)CH 2 , [CH 2 CH 2 O] i R 4 , [C n C 2n ]N(R 4 ) 2 or [C n H 2n ]C n F 2n+1 , n is 1 to 40, R 4 is H or C S H 2s+1 , s=0 to 40, i=1 to 200, each R 2 is independently H, or C t H 2t+1 wherein t is 1 to 20, each R 3 is independently H, COOR 1 , halogen, N(R 1 ) 2 , OR 1 , SO 2 NHR 1 , CH═CH 2 , or SO 3 M, wherein R 1 is as defined above, and M is H, alkali metal salt, alkaline earth metal salt, or ammonium.