Patent ID: 7473658

Claim:
A composition of formula (I) wherein A is independently selected from the group consisting of: hydrogen, C 1 -C 5 straight and branched chain alkyl, phenyl, benzyl, and —C(O)—Y—R f ; Y is independently —O— or —NH—; R f is a monovalent group selected from the group consisting of formulas (IIa), (IIb) (IIc) and (IId): 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; u and t are independently integers of 1 to 10; q and r are independently integers of 1 to 3; n is an integer of 0 to 10; B is independently selected from the group consisting of: —O—, —NH—, and a covalent bond; P is selected from the group consisting of: (R 1 O) 3 Si— and CH 2 ═C(R 2 )—CO 2 —; wherein R 1 is a C 1 -C 6 straight and branched chain alkyl; R 2 is a hydrogen, F, Cl or —CH 3 ; R is a monovalent, divalent, trivalent or tetravalent group having 1 to 60 carbon atoms; d is an integer of 0 or 1; and m is an integer of 1-4; with the provisos that m+d≦4; R has at least m+d carbon atoms with each valence residing on a different carbon atom; and when Y is —O—, R f is selected from formulas (IIb), (IIc) or (IId).