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1. A composition comprising an aqueous emulsion of formula (I)wherein
the composition of Formula (I) comprises a random copolymer; Rf is a straight or branched-chain perfluoroalkyl group of 2 to 6 carbon atoms, optionally interrupted by one or more —CH2—, —CFH—, or combinations thereof; A is O, S, or N(R′), wherein R′ is H or an alkyl of from 1 to about 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; R1 is H or CH3; R2 is independently selected from H or an alkyl of 1 to about 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 about 4 carbon atoms; R3 and R4 are each independently an alkyl of 1 to 4 carbon atoms, hydroxyethyl, benzyl, or R3 and R4 together with the nitrogen atom form a morpholine, pyrrolidine, or piperadine ring; M is H, HN(R6)3, Na, Li, Cs, K, or mixtures thereof; R6 is H or an alkyl or hydroxyalkyl of 1 to 12 carbon atoms; e is 0 to 40; R5 is H or an alkyl of 1 to 4 carbon atoms; R7 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%; andwherein
said composition of formula (I) further comprises residue from a hydrophilic chain transfer agent of formula (II) (Y—X—S)gH2-g,wherein
g is 1 or 2 X is a linear or branched alkylene of 1 to about 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. |
