NANOBYK-3611 is an aluminum oxide nanoparticle dispersion that improves the scratch resistance of solvent-borne and solvent-free systems. NANOBYK-3611 considerably enhances the scratch resistance even at low levels of 0.5-6% without affecting the optical properties such as gloss, color, transparency or physical properties. It has no effect on the surface characteristics and can be used across solvent and non-solvent based systems. NANOBYK-3611 provides benefits such as improved durability and longevity of finished surfaces.