| Characterization: Desmodur N 3300A is an aliphatic polyisocyanate (HDI trimer). It is suitable for use as the hardener component for lightfast polyurethane coating systems. Properties / Applications: Desmodur N 3300A is used primarily as the hardener component for lightfast two-component polyurethane coatings with high resistance to chemicals and weathering, very good gloss retention and outstanding mechanical properties. Preferred co-reactants are polyacrylate or polyester polyols. The main applications for systems based on Desmodur N 3300A are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing and plastics. As with any product, use of Desmodur N 3300A crosslinker in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability. Information provided by Covestro |
