DESMODUR N3400 is an aliphatic polyisocyanate used as a hardener component for lightfast polyurethane coating systems. As a solvent-free product, DESMODUR N3400 offers benefits for advanced material applications requiring high purity and consistency. With a low viscosity of around 140 mPa.s, DESMODUR N3400 can be easily processed and applied. It is compatible with various polyols and polyisocyanates, allowing for formulation flexibility. DESMODUR N3400's lightfast properties make it well-suited for advanced material end uses like optical and electronic components requiring UV resistance without color change. The product's purity and uniform molecular structure contribute to highly reproducible and reliable material performance. Overall, DESMODUR N3400 is a versatile hardener that enables advanced material manufacturers to develop high-quality polyurethane coatings and components.