Patent ID: 7094471

Claim:
A composition comprising: (A) at least one fluorochemical polyether silane compound having a polyfluoropolyether segment and at least two silane groups —Si(Y) 3-x (R 1 ) x per molecule, wherein R 1 represents an alkyl group, Y represents a hydrolysable group selected from the group consisting of halide groups, alkoxy groups, acyloxy groups and aryloxy groups, and x is 0 or 1; and (B) a substantial amount of one or more tetralkoxysilanes, and (C) a crosslinking agent wherein the crosslinking agent (C) is a compound of an element M 1 that is selected from the group consisting of Si, Ti, Zr, B, Al, Ge, V, Pb, Sn and Zn, said crosslinking agent (C) further having at least one hydrolysable group and at least one reactive functional group per molecule that is capable of engaging in a crosslinking reaction.