Fixed block radiation cured paint layers

The invention relates to a radiation-curable coating compositions consisting of 0 to 80 wt .-% of (meth) acrylate monomers, From 2.5 to 90 wt .-% (meth) acrylate oligomer, 5 to 30 wt .-% initiators and accelerators, 0.5 to 5 wt .-% nanoscale fillers and 0 to 5 wt .-% additives, wherein the sum of the components should be 100% and the coating agent as an accelerator containing at least one tertiary amino group-containing compound and the pigment is selected from oxides, phosphates, halides, sulfates or Oxyhydraten from Al, Ti, Zr, Si, Zn, Fe, Mn, Ba, Sr, Ca, Mg having an average particle diameter of 2 to 500 nm. For this coating agent layers can be produced that have a steep side edge at the edge of the crosslinked layer.