Emulsions of aminosiloxanes and silicates

Oil-in-water emulsions comprising:

• (i) 100 parts by weight of at least one polyorganosiloxane (P) bearing aminoalkyl groups, liquid at 20° C., and comprising at least 80 mol % of units selected from units consisting of the formulae Ia, Ib, IIa and IIb
• R12SiO(2/2) (Ia),
• R1aR2SiO(3-a)/2 (Ib),
• R33SiO(1/2) (IIa),
• R32R4SiO(1/2) (IIb),
• in which
• a is 0 or 1,
• R1 each individually is an alkyl radical having 1-40 carbon atoms unsubstituted or substituted by halogens,
• R2 each individually is an aminoalkyl radical of the formula III
• —R5—NR6R7 (III),
• where
• R5 each is individually is a divalent hydrocarbon radical having 1-40 carbon atoms,
• R6 each individually is a monovalent hydrocarbon radical having 1-40 carbon atoms, hydrogen or alkanoyl radical and
• R7 each individual is a radical of the formula IV
• —(R8—NR6)xR6 (IV),
• where
• x is 0 or an integer of 1 to 40 and
• R8 each individually is a divalent radical of the formula V
• —(CR9R9—)y (V),
• where
• y is an integer of 1 to 6,
• R9 each individually is hydrogen or a hydrocarbon radical having 1-40 carbon atoms,
• R3 each individually is an alkyl radicals having 1-40 carbon atoms which is unsubstituted or substituted by halogens,
• R4 each individually is an —OR or —OH radicals and,
• R each individually is an alkyl radical having 1-40 carbon atoms which is unsubstituted or substituted by halogens,
• wherein the average ratio of units of the formulae Ia and Ib to the sum total of units of the formulae IIa and IIb in the polyorganosiloxane (P) is 0.5 to 500 and polyorganosiloxane (P) has an average amine number of at least 0.1 mequiv/g,
• (ii) at least one protonating agent,
• (iii) 1 to 80 parts by weight of silicate compound selected from tetraalkoxysilicate(s) of the formula VI
• R10O4Si (VI),
• and polysilicate compound(s) comprising at least 80 mol % units of the formulae VII and VIII and at least 2 units of the formula VII
• R10O3SiO1/2 (VII),
• R10O2SiO2/2 (VIII),
• and mixtures thereof, where
• R1° each individually is a hydrocarbon radical having 1-18 carbon atoms which is unsubstituted or substituted by halogens,
• (iv) water,
• (v) at most 5 parts by weight of emulsifier(s)
• and
• (vi) at least 5 parts by weight of at least one organic solvent selected from monoalcohols of the formula IX
• R11—OH (IX),
• and dialcohol monoethers of the formula X
• R12O—-R13—OR14 (X),
• and mixtures thereof, where
• R11 each individually is a monovalent hydrocarbon radical having 2-18 carbon atoms,
• R12 each individually is a monovalent hydrocarbon radical having 1-18 carbon atoms,
• R13 each individually is a divalent hydrocarbon radical having 2-12 carbon atoms,
• R14 each individually is hydrogen, a monovalent hydrocarbon radical having 1-6 carbon atoms or an acetyl group,
• with the proviso that the emulsion comprises at most 10 parts by weight of a di-, tri- or oligoglycol ether of the formula XI
• R12—O—(CH2CH2)m—OH (XI),
• where
• R15 has the definition of R12 and
• m is an integer and is 2 or greater than 2.