A composition comprising an aqueous emulsion of formula wherein the composition of Formula comprises a random copolymer; R f is a straight or branched-chain perfluoroalkyl group of 2 to 6 carbon atoms, optionally interrupted by one or more -CH 2 -, -CFH-, or combinations thereof; A is O, S, or N(R'), wherein R' is H or an alkyl of from 1 to 4 carbon atoms; Q is a straight chain, branched chain or cyclic structures of alkylene, arylene, aralkylene, sulfonyl, sulfoxy, sulfonamido, carbonamido, carbonyloxy, urethanylene, ureylene, and combinations of such linking groups; R 1 is H or CH 3; R 2 is independently selected from H or an alkyl of 1 to 4 carbon atoms; r is independently 2 to 4; Z is O or -NR'--, wherein R' is H or an alkyl of from 1 to 4 carbon atoms; R 3 and R 4 are each independently an alkyl of 1 to 4 carbon atoms, hydroxyethyl, benzyl, or R 3 and R 4 together with the nitrogen atom form a morpholine, pyrrolidine, or piperadine ring; M is H, HN(R 6) 3, Na, Li, Cs, K, or mixtures thereof; R 6 is H or an alkyl or hydroxyalkyl of 1 to 12 carbon atoms; e is 0 to 40; R 6 is H or an alkyl of 1 to 4 carbon atoms; R 7 is a linear or branched alkylene of 2 to 4 carbon atoms; a is 10 to 60 mol %; b is 0 to 90 mol %; c is 1 to 90 mol %; and d is 0 to 90 mol%, wherein the sum of a + b + c + d is equal to 100%; and wherein said composition of formula further comprises residue from a hydrophilic chain transfer agent of formula (Y-X-S) g H 2 - g, wherein g is 1 or 2 X is a linear or branched alkylene of 1 to 4 carbon atoms, optionally substituted with one or more hydrophilic functional groups selected from hydroxyl, carboxyl, or amine; and Y is a hydrophilic functional group selected from hydroxyl, carboxyl, thiol, or amine. the composition of Formula comprises a random copolymer; R f is a straight or branched-chain perfluoroalkyl group of 2 to 6 carbon atoms, optionally interrupted by one or more -CH 2 -, -CFH-, or combinations thereof; A is O, S, or N(R'), wherein R' is H or an alkyl of from 1 to 4 carbon atoms; Q is a straight chain, branched chain or cyclic structures of alkylene, arylene, aralkylene, sulfonyl, sulfoxy, sulfonamido, carbonamido, carbonyloxy, urethanylene, ureylene, and combinations of such linking groups; R 1 is H or CH 3; R 2 is independently selected from H or an alkyl of 1 to 4 carbon atoms; r is independently 2 to 4; Z is O or -NR'--, wherein R' is H or an alkyl of from 1 to 4 carbon atoms; R 3 and R 4 are each independently an alkyl of 1 to 4 carbon atoms, hydroxyethyl, benzyl, or R 3 and R 4 together with the nitrogen atom form a morpholine, pyrrolidine, or piperadine ring; M is H, HN(R 6) 3, Na, Li, Cs, K, or mixtures thereof; R 6 is H or an alkyl or hydroxyalkyl of 1 to 12 carbon atoms; e is 0 to 40; R 6 is H or an alkyl of 1 to 4 carbon atoms; R 7 is a linear or branched alkylene of 2 to 4 carbon atoms; a is 10 to 60 mol %; b is 0 to 90 mol %; c is 1 to 90 mol %; and d is 0 to 90 mol%, wherein the sum of a + b + c + d is equal to 100%; and wherein said composition of formula further comprises residue from a hydrophilic chain transfer agent of formula (Y-X-S) g H 2 - g, wherein g is 1 or 2 X is a linear or branched alkylene of 1 to 4 carbon atoms, optionally substituted with one or more hydrophilic functional groups selected from hydroxyl, carboxyl, or amine; and Y is a hydrophilic functional group selected from hydroxyl, carboxyl, thiol, or amine.