NANOBYK-3652

Coatings Industry
Special Features and Benefits
The additive provides the so-called “immediate reflow effect” due to the silica nanoparticles which are evenly distributed in the coating and which act like shock absorbers. They absorb the impacting energy and only release it very slowly. This results in an elastic coating surface with a consistent hardness. Mechanical impact leaves hardly any trace and the coating surface is virtually undamaged. It therefore provides perfect long-term protection.

Recommended Levels
0.5-6.0% additive (as supplied) based upon total formulation.
The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
The product reaches its full effectiveness when added at low shear forces. This ensures that even distribution in the binder system is achieved. It is recommended that all surface active compounds in the formulation are removed, as silicones which reduce the surface tension in order to improve the substrate wetting, anti-cratering properties and surface slip, are not generally required when using the NANOBYK additive. If necessary, the leveling can be optimized later on using acrylate or silicone additives which have no
effect or only a very minor effect on the surface tension.

Dried additive residues must be removed from the container since they can lead to seeds when introduced into the final product. The content of methoxypropanol in this NANOBYK additive is also unproblematic in 2K polyurethane formulations.

Dispersion of surface-treated silica nanoparticles

To be stored and transported below 40 °C. Mix well before use.