Patent ID: 6251989
Filing Date: 2001-06-26
Classification: C08G,C09K

Abstract:
An oligomerized organopolysiloxane cocondensate, obtained by(a) mixing at least one water-soluble amino-functional organosilane represented by formula I:H.sub.2 N(CH.sub.2).sub.f (NH).sub.g (CH.sub.2).sub.h --Si(CH.sub.3).sub.z (OR).sub.3-z (I),wherein f is equal to 0 or a whole number from 1 to 6; g is equal to 0 if f is equal to 0, and g is equal to 1 if f is not equal to 0; h is a whole number from 1 to 6, z is 0, 1, 2, and R is a linear, branched, or cyclic alkyl group with 1 to 8 C atoms or an aryl group,with at least one member selected from the group consisting of a fluoro-functional organosilane represented by formula II, an organosilane represented by III, and an organosilane represented by formula IV:R.sup.1 --Y.sub.m --(CH.sub.2).sub.2 Si(R.sup.2).sub.y (OR).sub.3-y (II),wherein R.sup.1 is a monofluoridated, oligofluoridated, or perfluoridated alkyl group with 1 to 9 C atoms or a monofluoridated, oligofluoridated, or perfluoridated aryl group, Y is a --CH.sub.2 --, --O--, or --S-- group, R.sup.2 is a linear, branched, or cyclic alkyl group with 1 to 8 C atoms or an aryl group, and R is a linear, branched, or cyclic alkyl group with 1 to 8 C atoms or an aryl group, y is 0 or 1, and m is 0 or 1,R.sup.3 --Si(CH.sub.3)(OR).sub.2 (III),R.sup.3 --Si(OR).sub.3 (IV),wherein in formula III and formula IV, R.sup.3, independently in each instance, is a linear, branched, or cyclic alkyl group with 1 to 8 C atoms, R, independently in each instance, is a linear, branched, or cyclic alkyl group with 1 to 8 C atoms or an aryl group,in the molar ratio M=[a/(b+c+d)].gtoreq.0.1, wherein a is the sum of the mole numbers of the organosilane represented by formula I, b, if applicable, is the sum of the mole numbers of the organosilane represented by formula II, c, if applicable, is the sum of the mole numbers of the organosilane represented by formula III, and d, if applicable, is the sum of the mole numbers of the organosilane represented by formula IV;(b) mixing the mixture from (a) with water and with an acid and, optionally, with an alcohol, to obtain a cocondensate, and(c) oligomerizing the cocondensate to increase the particle size thereof.