Patent ID: 7993707

Claim:
A process for coating substrates, comprising the following steps: a) provision of a substrate, wherein the substrate is a woven fabric, a knitted fabric, a tile or a stone, b) application of a composition to at least one surface of the substrate, the composition obtained by: preparing a mixture comprising 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyltriethoxysilane, 3-glycidyloxypropyltriethoxysilane and/or 3-glycidyloxypropyltrimethoxysilane, and at least one selected from the group consisting of tetraethoxysilane, methyltriethoxysilane, octyltriethoxysilane and hexadecyltrimethoxysilane, adding a dispersion of hydrophobic oxide particles selected from the group consisting of Ti, Si, Zr, Al, Y, Sn, Ce and mixtures thereof in an inert solvent to the mixture, adding an acidic initiator and 3-aminopropyltrimethoxysilane and/or 3-aminopropyltriethoxysilane, thereby obtaining said composition, the inert solvent having a boiling point under the drying conditions of step c) which is in a range from 50° C. above to 50° C. below the drying temperature of step c) and the boiling point of the inert solvent under the drying conditions of step c) being at least 80° C., and c) drying of the composition applied in step b) at a drying temperature of from 100° C. to 250° C.