Patent ID: 8648126

Claim:
A radiation-curable coating composition, comprising: (A) at least one first urethane (meth)acrylate (A) having a molar mass M n of 1000 to 5000 g/mol and two ethylenically unsaturated double bonds per molecule, comprising as a synthesis component (a1) at least one diisocyanate, (a2) at least one polyesterdiol synthesized from: (a22) at least one oligomeric or polymeric diol which is (a222) at least one polycaprolactonediol with a molar mass Mn of up to 600 g/mol; and (a23) at least one dicarboxylic acid selected from the group consisting of a first compound of formula (Ia) and a second compound of formula (Ib) wherein R 2 is a single bond or a divalent alkylene radical comprising 1 to 3 carbon atoms, and R 3 is hydrogen or an alkyl radical comprising 1 to 10 carbon atoms, (a3) a third compound comprising precisely one isocyanate-reactive group and precisely one free-radically polymerizable group, and (B) at least one monoethylenically unsaturated reactive diluent (B) comprising at least one cycloaliphatic or heterocyclic group.