AEROSIL® R812 is a fumed silica aftertreated with organosilane (HMDS) with high specific surface and marked hydrophobia.

Properties

• The product has a large specific surface area and is very hydrophobic
• Good flowability and dispersion properties
• Excellent effect in the rheological control of complex liquid systems (such as 2 K PUR coatings)
• Because of the fineness of the particles and the very marked hydrophobia, the product acts as an excellent flow agent for fine powders up to 1 µm

Applications

• Very efficient rheological control additive and also used for thixotropy control in polar to semi-polar coating systems and in adhesive and sealant materials
• Efficient effect as flow agent in very different applications, such as powder coatings, toners, or cosmetics
• Enhances the anti-corrosion properties for coatings
• To improve the storage stability of oil dispersions in agrochemicals
• Improves the mechanical properties of various polymer systems, such as silicone rubber
• In coatings and adhesives, AEROSIL® R 812 acts as an anti-settling agent, stabilizes pigments, and increases the anti-corrosive effect