Verfahren zum Beschichten von Kunststoffsubstraten und Lack zur Verwendung in diesem Verfahren

The description refers to a process for the coating of a plastic substrate by which a paint is applied to the plastic substrate, the paint being manufactured by the hydrolytic condensation of one or several hydrolyzable silicon compounds in which 1 to 40 mol per cent of all groups not hydrolyzable on Si-bound groups having an ethylene unsaturated bond and additional non-hydrolyzable groups having a mercapto residue, present in such quantity that the ratio of ethylene unsaturated compounds to mercapto residue is between 25:1 and 1:1; the paint cures by means of radiaton in the presence of a photoinitiator and if necessary, is thermally postcured, or the paint is thermally cured. A paint for application in said process is also the subject of this invention.