Abstract: A coating agent for producing scratch-resistant coatings on plastic articles, which comprises:(1) 1-30 wt. % of a prepolymer, as a thickener (IP thickener), which prepolymer is bound in the composition of the coating by polymerization;(2) 20-80 wt. % of multifunctional acrylates, multifunctional methacrylates or mixtures thereof;(3) 5-75 wt. % of a thinner;(4) 0.01-10 wt. % of a UV-initiator;(5) 0-20 wt. % of customary additives; wherein the prepolymer (1) is obtained by radical polymerization of:(a) 90-99 wt. % of C.sub.1 -C.sub.8 -alkyl esters of acrylic- or methacrylic acid; and(b) 1-10 wt. % of a sulfur-containing regulator having at least three thiol groups. The coating system is distinguished by high scratch-resistance and good weatherability.

Abstract: The invention relates to a coating composition, a method of coating molded articles with the coating composition, and the molded articles so coated, particularly molded articles comprised of thermoplastic or thermoelastic plastics. The coating, in the form of a cured thin layer, is particularly optically clear, scratch-resistant, and weather-resistant. It is produced on the plastic substrate material by polymerization of a layer of flowable coating comprised of the coating material, which layer contains polyfunctional (meth)acrylic monomers, and said layer further contains, as a "leveling" agent, fluoroalkyl (meth)acrylates of formula I ##STR1## where R.sub.1 represents H or CH.sub.3, and R.sub.2 represents a fluorine-containing alkyl group with 2-20 C atoms.

Abstract: Scratch resistant and antireflective coatings for synthetic resins, said coatings having a refractive index differing from the value 1.45 by at least 0.01 unit and a thickness ranging from 1 to 40 microns and comprising(1) (a) an acrylate and/or methacrylate polymer, and/or(b) an organosilicon polymer, or(c) a melamine resin; and(2) from 0.1 to 10 weight percent of amorphous, porous silicic acid having a large pore volume from 0.1 to 5 ml/g and consisting of primary particles of an average diameter ranging from 1 to 50 microns;synthetic resin substrates having such a coating thereon; coating compositions for applying such a coating to a substrate; and methods for making such coatings.