COATING COMPOSITIONS WITH HIGH SCRATCH RESISTANCE AND WEATHERING STABILITY

摘要

The invention relates to coating agents which contain: a) at least one hydroxyl group containing compound (A), b) at least one isocyanate group containing compound (B), c) at least one catalyst (D) for cross-linking silane groups, wherein: i) one or more components of the coating agent contain hydrolysable silane groups and ii) the coating agent can be finally hardened to give a coating having randomly distributed regions of an Si-O-Si network. The coating agents according to the invention are characterized in that the catalyst (D) or the catalysts (D) contain phosphorus.