Preparation of organopolysiloxanes with fluorohydrocarbyl and long-chain hydrocarbyl groups, used for e.g. preparing/treating textile fibers or leather, comprises cohydrolysis of different organosilanes with these groups

Preparation of organopolysiloxanes (I) containing 2-440C fluorohydrocarbyl group(s), 12-400C hydrocarbyl group(s) and optionally 1-11C hydrocarbyl and/or chlorine, hydroxy and/or 1-8C alkoxy groups, comprises cohydrolysis of organosilanes (II), with 12-400C hydrocarbyl substituent(s), with fluorocarbyl-substituted organosilanes (III) containing fluorocarbon groups, in the presence of water. Preparation of organopolysiloxanes (I) with units of formula (IA), containing 2-440C fluorohydrocarbyl group(s), 12-400C hydrocarbyl group(s) and optionally 1-11C hydrocarbyl and/or chlorine, hydroxy and/or 1-8 C alkoxy groups, comprises the cohydrolysis of organosilanes of formula (II), including organosilane(s) with 12-400C hydrocarbyl substituent(s), with fluorocarbyl-substituted organosilanes of formula (III), containing fluorocarbon groups of the given formulae in the presence of water. AaRbR pSiOXcO(4-a-b-c-p)/2 (IA) RdR tSiY(4-d-t) (II) ARrX1-rSiY2 (III) R = monovalent, optionally substituted 1-11C hydrocarbyl; R = monovalent, optionally substituted 12-400C hydrocarbyl; X = Cl or -OR ; R = H, 1-8C alkyl (optionally with ether substituents) or a group of formula (IV): -R ((CH(CH3)CH2O)e(CH2CH2O)f((CH2)4O)gR )y-1 (IV) R = di-, tri- or tetravalent 2-30C hydrocarbon group, which may contain -O-, C(O)-O-, -C(O)-NR -, -SO2NR , -NR -, -N= OR -S- group(s); y = valency of R (i.e. 2, 3 or 4); R = H or 1-40 C hydrocarbyl, optionally substituted by -C(O)-; e, f, g = 0-200; e+f+g = 1 or more; A = group of formula (V): R (-CnF2n+1)x-1 (V) R = a di-, tri- or tetravalent, optionally substituted 1-400C hydrocarbon group, optionally with O atom(s) in the chain; x = valency of R (i.e. 2, 3 or 4); a, r = 0 or 1; b, c, p, d = 0, 1, 2 or 3; t = 1, 2 or 3 in at least one silane (II), otherwise 0; a+b+c+p = 3 or less, such that (I) contains at least one A group and at least one R group per molecule; d+t = 1, 2 or 3; and Y = Cl or -OR . Die Erfindung betrifft ein Verfahren zur Herstellung von Fluorkohlenstoffreste aufweisenden Organosiliciumverbindungen durch Cohydrolysereaktion von Organosilanen der Formel DOLLAR A R¶d¶R·5·¶t¶SiY¶(4-d-t)¶ (V), DOLLAR A mit Organosilanen der Formel DOLLAR A AR¶r¶X¶1-r¶SiY¶2¶ (VI), DOLLAR A wobei DOLLAR A R, R·5·, A, X, d, t, r und Y eine der in Anspruch 1 genannten Bedeutungen haben, DOLLAR A in Anwesenheit von Wasser, mit der Maßgabe, daß bei mindestens einem Silan der Formel (V) t verschieden 0 ist.