Patent ID: 8338517

Claim:
An aqueous composition comprising a non-fluorinated polymer and a surfactant, wherein the surfactant is represented by a formula selected from the group consisting of: [R f —(O) t —CHF—(CF 2 ) n —COO − ] i X i+ ; {[R f —(O) t —CQH—CF 2 —O] m —R—COO − } i X i+ ; {[R f —(O) t —CQH—CF 2 —O] m —R—SO 3 − } i X i+ ; and [CF 3 CFH—O—(CF 2 ) p —COO − ] i X i+ ; wherein R f represents a partially or fully fluorinated aliphatic group optionally interrupted with at least one oxygen atom; Q is selected from the group consisting of F and CF 3 ; R is selected from the group consisting of alkylene and arylene; X i+ represents a cation having a valence i, wherein i is 1, 2 or 3; t is 0 or 1, wherein when the surfactant is represented by formula [R f —(O) t —CHF—(CF 2 ) n —COO − ] i X i+ and t is 0, then R f is interrupted with at least one oxygen atom; m is 1, 2, or 3; n is 0 or 1; and p is an integer from 1 to 6; and wherein the aqueous composition is essentially free of fluoropolymers.