With UV-A-curable, solvent-containing mixture, process for its preparation and its use

With UV-A-curable, solvent-containing mixture consisting of (A) 1 to 50 wt .-% of at least one curable with UV-A radiation member selected from the group consisting of - monomer (a1) containing at least three UV-A-curable reactive functional groups and at least one isocyanate-reactive functional group and - mixtures (a2) from - of isocyanate-reactive functional group-free monomers (a21) containing at least two curable with UV-A radiation reactive functional groups, and - monomers (a22) that contain at least two UV-A-curable reactive functional groups and at least one isocyanate-reactive functional group; (B) 0.01 to 10 wt .-% of at least one colorless or substantially colorless photoinitiator having at least one absorption maximum in the wavelength range of λ = 300 to 400 nm; (C) 10 to 70 wt .-% of at least one alkyl and / or cycloalkyl acetate having 3 to 10 carbon atoms in the alkyl radical and / or in the cycloalkyl radical; (D) 10 to 70 wt .-% of at least one alkoxyalkyl, alkoxycycloalkyl, cycloalkoxyalkyl and / or Cycloalkoxycycloalkylacetats; ...