Patent ID: 8871322

Claim:
A method of coating polycarbonate substrates, comprising applying to a polycarbonate substrate a transparent coating composition comprising (A) at least one radiation-curing binder, (B) nanoparticles, and (C) optionally solvents and/or optionally reactive diluents, and wherein (i) the nanoparticles (B) comprise silicon dioxide nanoparticles, (ii) the silicon dioxide nanoparticles (B) have a d 50 of between 80 and 300 nm, and (iii) the silicon dioxide nanoparticles (B) have a particle size distribution such that less than 15% by weight of the particles have a size in the range of less than 80 nm, 75% to 95% by weight of the particles have a size in the range from 80 to 300 nm, 0% to 5% by weight of the particles have a size in the range from more than 300 to 1000 nm, and 0% to 5% by weight of the particles have a size in the range from more than 1000 nm to 10 000 nm.