Low‐solvent two‐pack polyurethane coatings Available to Purchase

In the sector of light‐stable, two‐pack polyurethane coatings (high‐solids coatings) new binder systems were developed during the last few years. When polyisocyanate adducts suitable for low‐solvent, two‐pack polyurethane coatings are to be formulated, it is necessary to adjust the functionality, the molecular weight and the starting components appropriately to one another. This also applies to the polyhydroxy compounds used as co‐reactants. The various parameters for controlling the polymer properties are discussed.