International. Researchers in China have employed a simple method to produce low-gloss aqueous polyurethane acrylate coatings that work without opaque agents.
A number of low-gloss aqueous polyurethane hybrid acrylate emulsions (WPUA) with different weight ratios of hard/soft acrylic monomers were synthesized.
Compared to traditional low-gloss coatings that achieve low-gloss effects by adding a large number of pigments, fillers or both, to apply roughness to surfaces, the low-gloss effect of these WPUA emulsions was achieved by forming self-adhesive surfaces during film formation.
Brightness levels can be as low as 3 units with an angle of incidence of 60°. Overall, WPUA emulsions that provided films with good hardness, good adhesion resistances and excellent thermal stabilities, showed a great advantage in low-gloss aqueous coating applications.
Source: https://www.sciencedirect.com
