| 摘要 |
<p>Processes for treating a wide variety of substrates with transparent, storage-stable and water-compatible inorganic/organic sols suitable for the surface functionalization comprising said transparent and storage-stable coating agent containing a water-compatible sol and water in a weight ratio of 100:1 to 1:500; said water-compatible sol obtained by mixing the following components: (A) from 0.5 to 40% by weight of an organosol obtainable by the hydrolysis and condensation of one or more silicon compounds of general formula I wherein R represents the same or different hydrocarbon groups with from 1 to 22 carbon atoms, optionally substituted with functional groups, which are bonded to the silicon atom through a carbon atom, optionally interrupted by oxygen, sulfur, nitrogen or the group NR3, with R3 being hydrogen or C1 to C14 alkyl; the radicals R1 are the same or different and represent R4 or Si(R5)3, wherein R4 are the same or different and each represent an optionally substituted hydrocarbon group with from 1 to 8 carbon atoms, optionally interrupted by oxygen, sulfur, nitrogen or the group NR3 with the meaning mentioned above; and R5 is R4 and/or O—R4; R2 are the same or different and represent O—R1 or R4, R1 and R4 having the meanings as mentioned above; and n is from 1 to 30; B) from 0 to 40% by weight of one or more alkoxides of general formula II Me(OR4)m (II) wherein in the case where n=1, Me represents Si and m is 4, and in the case where n>1, Me represents Si, Ti, Zr, Hf or Al, and m is the valence of the metal cation, and R4 has the meaning mentioned above; (C) from 0 to 8% by weight of one or more complexing agents for reducing the hydrolysis rate of components (A) and (B); and (D) from 12 to 99.5% by weight of one or more water-compatible or water-miscible solvents having a boiling point of at least 150 ° C.; respectively based on 100% by weight of components (A), (B), (C) and (D) characterized in that alcohols having a boiling point of at most 160 ° C., formed during hydrolysis, are removed by distillation to adjust the flash point.</p> |
