| Blocked aliphatic polyisocyanate based on H12MDI. In combination with hydroxyl-bearing polyols, especially Desmophen® grades, to formulate lightfast one-component polyurethane stoving coatings; as an additive in conventional stoving systems to improve adhesion and flexibility. Properties / Applications: Desmodur® BL 5375 was developed as a hardener component for lightfast one-compnent stoving polyurethane systems. As with air-drying two-component PU coatings, the film properties can be influenced by the crosslinking density and the selection of hydroxyl-bearing polyol co-reactant. Desmodur® BL 5375 can be used to formulate high-quality industrial finishes, especially for coil and can coating. The product can also be used as an additive to improve flexibility, tear resistance and adhesion of conventional stoving coil and can coating systems. The combination of Desmodur® BL 5375 with Desmophen® 670 results in particularly high flexibility. Such a formulation is suitable for tear resistance coatings flexible substrates and those vulnerable to impact. Available results form Florida weathering tests show that Desmodur® BL 5375 has good weather stability comparable with that of Desmodur® BL 3175. Information provided by Covestro |
