| Desmodur IL 1451 is an aromatic polyisocyanate based on toluene diisocyanate (TDI). It is used as a hardener component for fast drying, two-component polyurethane coatings. Properties / Applications: The two-component polyurethane systems formulated with Desmodur IL 1451 are characterized by their very rapid initial drying and early sandability, making them ideal for the industrial coating of wood and furniture. An NCO/OH ratio of approx. 0.5 - 0.7 is recommended as a function of the reactivity and hardness of the polyol. With an NCO/OH ratio of 1:1, the Desmodur IL 1451 must be combined with Desmodur L. In this case, the optimal ratio of the Desmodur L / IL 1451 is a function of polyol hardness and the required drying time. The low viscosity and high reactivity of the Desmodur IL 1451 enables the formulation of clear and colored coatings with high solids contents. These can be applied quickly and only a few coats are required. As with any product, use of Desmodur IL 1451 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 |
