COATING AGENT COMPOSITIONS, COATINGS MADE THEREFROM AND EXHIBITING HIGH SCRATCH RESISTANCE AND GOOD POLISHABILITY, AND USE THEREOF

摘要

The invention relates to non-aqueous coating agent compositions containing: (A) at least one polyhydroxyl group-containing compound; (B1) at least one polyisocyanate group-containing compound (B1) having free or blocked isocyanate groups and a cycloaliphatic polyisocyanate body, and/or a polyisocyanate derived from said compound (B1); (B2) at least one polyisocyanate group-containing compound (B2) having free or blocked isocyanate groups and an acyclic, aliphatic polyisocyanate body, and/or a polyisocyanate derived from said compound (B2); and (D) at least one catalyst for crosslinking silane groups. Component (B1) and/or component (B2) contain/s at least one structural unit -NR-(X-SiR"x(OR')3-x) (I) and/or at least one structural unit -N(X-SiR"x(OR')3-x)n(X'-SiR"y(OR')3-y)m (II), compound (B1) is used at such an quantity that the percentage of binder(s) in compound (B1) amounts to 5 to 45% by weight in relation to the sum of binder percentages in compounds (B1) and (B2), and the mixture of components (B1) and (B2) contains both structural units (I) and structural units (II). The invention further relates to multistage coating methods and the use of the coating agent compositions.