Aqueous crosslinkable dispersions based on organosilicon compounds

An aqueous crosslinkable dispersion comprising:

• (A) at least one organosilicon compound comprising units of the formula
• Ra(OR1)bSiO(4-a-b)/2 (I),
• where
• R denotes identical or different SiC-bonded hydrocarbon radicals having 1 to 18 carbon atoms which are optionally substituted by halogen atoms, amino groups, ether groups, ester groups, epoxy groups, mercapto groups, cyano groups or (poly)glycol radicals, the (poly)glycol radicals being composed of oxyethylene and/or oxypropylene units,
• R1 are identical or different and are hydrogen or optionally substituted hydrocarbon radicals which are optionally interrupted by oxygen atoms,
• a is 0, 1, 2, or 3, and
• b is 0, 1, 2, or 3,
• with the proviso that the sum of a+b is less than or equal to 4,
• (B) silicon dioxide particles which are partly wettable with water,
• (C) water,
• (D) at least one organosilicon compound comprising at least one unit of the formula
• [A-CR32]eSiR2cYdO(4-c-d-e)/2 (II),
• where
• A are identical or different and denote an organic radical bonded via nitrogen,
• R2 are identical or different monovalent, optionally substituted hydrocarbon radicals,
• R3 are identical or different and are hydrogen or monovalent, optionally substituted hydrocarbon radicals,
• Y are identical or different and are hydrolyzable radicals,
• c is 0, 1, 2, or 3,
• d is 0, 1, 2, or 3, and
• e is 0, 1, or 2, with the proviso that the sum of c+d+e is ≦4 and the organosilicon compound has at least one unit where e is other than 0, and also at least two radicals Y.