Patent ID: 7385077

Claim:
A composition of formula (I) wherein m and d are each independently an integer of 1 or 2; n is independently 0 or 1; each R is independently hydrogen or a C 1 to C 4 alkyl group; A is independently hydrogen or —C(O)—O—B; R o is a linear, branched or cyclic aliphatic group, or combination thereof, having from about 2 to about 100 carbon atoms, interrupted or substituted by 1 to about 50 hydrophilic groups, said hydrophilic groups selected from the group consisting of hydroxyl, amino, ether and mixtures thereof; wherein the ratio of hydrophilic groups to carbon atoms is from about 1:1.1 to about 1:10, each carbon atom has at most one hydrophilic group bonded to it, and covalent bonding between hydrophilic groups is absent; each B is independently a monovalent group of formula (IIa), (IIb) or (IIc): R f 1 (CH 2 ) t (R 1 ) r — (IIa) R f 2 (CH 2 CF 2 ) p (CH 2 CH 2 ) q (R 1 ) r — (IIb) R f 3 O(CF 2 CF 2 ) p (CH 2 CH 2 ) q (R 1 ) r — (IIc) wherein each of R f 1 and R f 2 are C 1 -C 6 linear or branched perfluoroalkyl; R f 3 is a C 1 to C 7 linear or branched perfluoroalkyl group, optionally interrupted by one, two or three ether oxygen atoms; t is an integer of 1 to about 10; p and q are each independently integers of 1 to about 3; r is 0 or 1; R 1 is a divalent radical selected from —S(CH 2 ) t —; and provided that when m is 1, n is 1; when m is 2, n is 0, A is hydrogen, and d is 1; and when d is 2, m is 1, A is —C(O)—O—B, R o has at least three carbon atoms, and nitrogens and hydrophilic groups are bonded to different carbon atoms.