| 摘要 |
Polyurethanes suitable as coating materials or components thereof are essentially composed of A) a1) from 40 to 100 mol % of bis(4-isocyanatocyclohexyl)methane, the trans/trans content of (a1) being up to 18 mol %, based on the amount of (a1), and a2) from 0 to 60 mol % of further polyfunctional aliphatic, cycloaliphatic, araliphatic or aromatic isocyanates of 4 to 30 carbon atoms and B) b1) from 20 to 100 mol % of a nonaromatic diol and b2) from 0 to 80 mol % of further polyfunctional compounds having reactive groups which can react with the isocyanate groups (A), the reactive groups being hydroxyl or primary or secondary amino groups.
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