Patent ID: 7189408

Claim:
Compositions comprising the following components: A) a fluoropolyether phosphate of general formula: R f —[CF 2 CH 2 O—L—P(O)(OZ 1 )(OZ 2 )] 1 (I) wherein I=1 or 2; L is a bivalent linking group; Z 1 and Z 2 are equal to or different from each other, and each is independently selected from H, alkaline or ammonium cation, di- or tri-alkanolammonium cation wherein alkanol comprises from 1 to 20 C atoms, di- or tri- or tetra-alkylammonium cation wherein alkyl comprises from 1 to 20 C atoms, or R f —CF 2 CH 2 —O—L; R f is a fluoropolyether or perfluoropolyether chain comprising one or more repeating units selected from the group consisting of: a) —(C 3 F 6 O)—; b) —(CF 2 CF 2 O)—; c) —(CFL 0 O)—, wherein L 0 =—F, —CF 3 ; d) —CF 2 (CF 2 ) z′ CF 2 O—, wherein z′ is an integer 1 or 2; e) —CH 2 CF 2 CF 2 O—; when R f is monofunctional (I=1), an end group is of the perfluoroalkyl type selected from CF 3 O, C 2 F 5 O, C 3 F 7 O; optionally a fluorine atom in the perfluoroalkyl end groups is substituted by a chlorine or hydrogen atom; B) a solvent selected from the group consisting of: linear or branched alcohols from 2 to 3 carbon atoms and their corresponding methyl ethers; linear or branched glycols from 2 to 6 carbon atoms and their corresponding mono alkylethers wherein the linear or branched ether alkyl group comprises from 1 to 4 carbon atoms; and dimethoxy methane acetone; and C) water.