Coating agent containing addition compounds with silane functionality, and highly scratch-resistant coatings with improved crack resistance

摘要

Disclosed are coating compositions comprising film-forming material with at least one reactive functional group G′″, catalyst for the crosslinking of the silane groups, aprotic solvents, and at least one adduct with silane functionality which is prepared by an addition reaction of(a) at least one silane (S1) which has at least one functional group G′ which is reactive with the complementary functional groups G″ of the compound (O), and(b) at least one compound (O) which has at least one complementary functional group G″ and at least one surface-active radical.;Also disclosed are multicoat paint systems in which the transparent coating has been produced from these coating compositions, methods of making and use, as well as methods of improving the hardness and/or the scratch resistance of coatings.