TWO-COMPONENT POLYURETHANE COATING COMPOSITIONS

摘要

Two-component coating compositions, methods for their preparation and use are disclosed. The two-component coating compositions include an isocyanate-functional component and an isocyanate-reactive component comprising a hydroxyl-functional polymer. The isocyanate-functional component includes: (a) an aliphatic polyisocyanate containing allophanate structural units; and (b) a cycloaliphatic polyisocyanate comprising an allophanate group and an isocyanurate trimer group.