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

摘要

Disclosed are nonaqueous coating material compositions comprising (A) at least one polyhydroxyl-group-containing compound, (B) at least one polyisocyanate-group-containing compound having free or blocked isocyanate groups, and (D) at least one catalyst for the crosslinking of silane groups, where component (B) comprises at least one structural unit—NR—(X—SiR″x(OR′)3-x)  (I), and at least one structural unit—N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m  (II), wherein in component (B) (i) more than 30 mol % and less than 70 mol % of the originally present isocyanate groups have undergone reaction to form structural units (I) and (II), (ii) more than 25 and less than 36 mol % of the originally present isocyanate groups have undergone reaction to form structural units (II), and (iii) component (B) has at least one polyisocyanate group-containing compound (B2) having free or blocked isocyanate groups and having an acyclic, aliphatic polyisocyanate parent structure.