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COATING MATERIAL COMPOSITIONS AND COATINGS PRODUCED THEREFROM COMBINING HIGH SCRATCH RESISTANCE WITH GOOD POLISHABILITY AND GOOD OPTICAL PROPERTIES, AND USE THEREOF
COATING MATERIAL COMPOSITIONS AND COATINGS PRODUCED THEREFROM COMBINING HIGH SCRATCH RESISTANCE WITH GOOD POLISHABILITY AND GOOD OPTICAL PROPERTIES, AND USE THEREOF
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机译:结合了高耐刮擦性,良好的可抛光性和良好的光学性能的涂料材料组合物和由其生产的涂料,并使用它们
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摘要
The present invention provides non-aqueous coating material compositions comprising A) at least one polyhydroxyl-group-containing compound, B1) at least one polyisocyanate-group-containing compound (B1) having free or blocked isocyanate groups and having a cycloaliphatic polyisocyanate parent structure, and/or a polyisocyanate derived therefrom, B2) at least one polyisocyanate-group-containing compound (B2) having free or blocked isocyanate groups and having an acyclic, aliphatic polyisocyanate parent structure, and/or a polyisocyanate derived therefrom, D) at least one catalyst for the crosslinking of silane groups, and R) at least one rheological assistant (R) based on fumed silica, where component (B1) and/or component (B2) comprise at least one structural unit (I) and/or at least one structural unit (II), the compound (B1) is used in an amount such that the binder fraction of the isocyanate-group-containing parent structure of (B1) is between 5% and 45% by weight, based in each case on the sum of the binder fraction of the isocyanate-group-containing parent structure of (B1) plus (B2), and the mixture of components (B1) plus (B2) includes structural units (I) and structural units (II). The present invention further provides multi-stage coating processes and also the use of the coating material compositions.
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