DESMODUR ULTRA N 3800

DESMODUR ULTRA N 3800 is aliphatic polyisocyanate (flexibilizing HDI trimer). As the hardener component for lightfast polyurethane coating systems which is used primarily as a hardener component for lightfast, two-component polyurethane coating systems with high chemical resistance and weather stability, very good gloss retention, and outstanding mechanical properties. Preferred combination partners are polyacrylate or polyester polyols. The primary field of application for coating systems based on DESMODUR ULTRA N 3800 is air and heat-drying automotive OEM, automotive refinishing, and transportation coatings, as well as industrial coatings and coatings for plastics. Furthermore, Desmodur® ultra N 3800 should not be thinned to less than 40 % non-volatile content. With time, lower binder content can lead to turbidity and sedimentation.