Patent ID: 8758498

Claim:
A reactive composition comprising (a) at least two different fluorosilanes each of the same general formula I R tf —SiX 3 (formula I), wherein X is selected from the group of alkoxy, halide, oxime, carboxyl, phenoxide and polyether, and R tf is a straight, branched or cyclic residue of the general formula II or III —Y—R f (formula II) or —Y—(SiR 1 R 2 O) x SiR 1 R 2 —Y—R f (formula III), wherein Y is a moiety selected from the group of —(CH 2 ) n —, —CO 2 —, —O—, —CONH—, —Ph—, —SO 2 —, and —SO 2 NH—, —(CH 2 ) o —O—(CH 2 ) m , —(CH 2 ) o —CONH—(CH 2 ) m , —(CH 2 ) o —Ph—(CH 2 ) m , —(CH 2 ) o SO 2 —(CH 2 ) m , —(CH 2 ) o—SO 2 NH—(CH 2 ) m , —SO 2 —O— and —SO 2 NH—, wherein o is an integer from 1 to 30, m is a number in the range from 0 to 30 and, wherein n is an integer from 1 to 30, R f is a C2 to C7 linear or branched perfluoralkylene group, wherein the fluorosilanes differ in their number of carbon atoms in R f at least by 2, R 1 and R 2 are independently selected from monovalent organic residues, x is an integer from 0 to 5, and (b) and at least one aminosilane of the general formula IV R a —SiR 3 R 4 R 5 (formula IV), where R a is a straight, branched or cyclic alkyl residue comprising 1 to 7 carbon atoms and at least one primary, secondary, ternary or quaternary amino-group, R 3 and R 4 are independently selected from —R a , —OR 6 and/or —R 6 , and R 5 is —OR 6 , and R 6 is a straight, branched or cyclic alkyl residue comprising 1 to 3 carbon atoms.