Patent ID: 7985798

Claim:
A process for making a non-aqueous condensation product of a fluorosilane and an aminosilane, comprising reacting a fluorosilane and an aminosilane in the presence of an acid and with no added water to make the condensation product, wherein (a) the fluorosilane is of 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 divalent organic moiety selected from —(CH 2 ) o —, —CO 2 —, —(CH 2 ) o —CO 2 —(CH 2 ) m —, —(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—, —CH═CH—, —CH═CH—(CH 2 ) o , —O—, —CONH—, -Ph-, —SO 2 —, and —SO 2 NH—, wherein o is a number in the range from 1 to 30 and m is a number in the range from 0 to 30, R f is a C1 to C30 linear or branched perfluoroalkyl group or a perfluorinated polyether, R 1 and R 2 are independently selected from monovalent organic residues, x is an integer from 0 to 5, and (b) the aminosilane is of 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 —R 6 , and R 5 is —OR 6 , R 6 is a straight, branched or cyclic alkyl residue comprising 1 to 3 carbon atoms, and the molar ratio of R f -groups of formula I to amino-groups present in formula IV is in a range from 2:1 to 6:1.