Coating systems
View Patent ↗Coating systems characterized in that they contain 0.5% by weight to 30% by weight of a hydrophilic, structurally modified, optionally reground, fumed silica.
1. A coating system comprising 0.5% by weight to 30% by weight of a hydrophilic, structurally modified, fumed, non-silanized silica.
2. The coating system according to claim 1 , wherein the silica is reground.
3. The coating system according to claim 1 , wherein the silica has a tamped density of 100 to 250 g/l.
4. The coating system according to claim 1 , wherein the silica has a DBP number of 160 to 240 g/100 g or 180 to 250 g/100 g.
5. The coating system according to claim 1 , wherein the silica has a grindometer value of 60 μm or less.
6. The coating system according to claim 1 , wherein the silica has a BET surface area of 50±30 to 380±30 m 2 /g.
7. The coating system according to claim 1 , wherein the silica has a black number of 275 to 279 My.
8. The coating system according to claim 1 , wherein the structural modification of the silica is carried out by a ball mill.
9. The coating system according to claim 8 , wherein prior to and/or during the structural modification, water is added to the silica.
10. The coating system according to claim 9 , wherein water is added to the silica in an amount of 0.5% to 5% by weight.