| 摘要 |
<p>A process for producing sheets, in which a free-radically crosslinkable coating composition (K) which after crosslinking to completion gives a transparent coating (KE) is applied to a backing sheet (T), a coating (KT), dried but not yet crosslinked to completion, is produced from the coating composition (K), on (KT) a pigmented coating (PB) is produced and optionally on (PB) a tiecoat is applied, the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) based on urethane acrylate and containing carbamate and/or biuret and/or allophanate and/or urea and/or amide groups, (KK) having a number-average molecular weight of from 1000 to 50 000 g/mol, having a double bond content of from 1.0 to 5.0 mol of double bonds per 1000 g of reactive component (KK), containing on average per molecule >1 branching point, containing 5%-50% by weight, based in each case on the weight of component (KK), of cyclic structural elements, and containing at least one aliphatic structural element having at least 6 carbon atoms in the chain.</p> |
