Patent ID: 6641870
Filing Date: 2003-11-04
Classification: C04B,C09D,Y10T

Abstract:
A process for producing a coating on a substrate, comprising:A) applying to a substrate in a first step a composition comprising one or more organosilicon components selected from the group consisting of (i) at least one organosiloxane which carries at least one triamino group of the general formula I {NHx(CH2)aNHy(CH2)bNHz}â€”â€ƒâ€ƒ(I), â€ƒsuch a group being attached by way of at least one N-bonded alkylene group having 1 to 4 carbon atoms to at least one silicon atom, a and b being identical or different and representing an integer from 1 to 6, x being 0 or 1 or 2, y being 0 or 1, z being 0 or 1 or 2, subject to the proviso that (x+y+z)&lE;4, at least one Siâ€”C-bonded fluoroalkyl group of the general formula II F3C(CF2)r(CH2)sâ€”â€ƒâ€ƒ(II) â€ƒin which r is an integer from 0 to 18 and s is 0 or 2, â€ƒand at least one hydroxyl and/or alkoxy group, (ii) a composition which comprises (i), (iii) an alkylalkoxysilane in which alkyl represents linear, branched or cyclic alkyl radicals having 1 to 16 carbon atoms and alkoxy represents methoxy or ethoxy or propoxy or butoxy, (iv) a composition which comprises at least one organosiloxane which carries at least one amino group of the general formula III {NH2(CH2)a(NH)r(CH2)b(NH)s}â€”â€ƒâ€ƒ(III) â€ƒthis group being attached by way of at least one N-bonded alkylene group having 1 to 4 carbon atoms to at least one silicon atom, a and b being identical or different and being an integer from 0 to 6, r being 0 or 1, s being 0 or 1, subject to the proviso that when a=0 then r=0 and when b=0 then s=0, at least one Siâ€”C-bonded linear, branched or cyclic alkyl group having 1 to 16 carbon atoms, and at least one hydroxyl and/or alkoxy group; and (v) a mixture thereof, to obtain a treated substrate, and B) subsequently in a second step applying (i) or (ii) to the treated substrate.