| abstract |
The present invention a) a1) at least partially aggregated, bound to the surface modification component by Si-O-Si bonds, and still having reactive groups on its surface Surface modified silicon dioxide particles, a2) having at least one functional group capable of reacting with at least one silicon-carbon bond and a reactive group to form a covalent Si-O-Si bond One or more organosilicon compounds, a3) one or more solvents Providing a pre-dispersion comprising a, b) high pressure milling the predispersion to form a dispersion, c) removing the liquid phase of the dispersion It relates to a method for producing surface-modified silicon dioxide particles having an average particle diameter of 100 nm or less. The present invention relates to redispersible surface modified silicon dioxide particles obtainable by this method. The invention also relates to toner powders, silicone rubbers, adhesives and their use in scratch resistant surface coatings. |