Patent ID: 6733847
Filing Date: 2004-05-11
Classification: B05D,C08J

Abstract:
A process for the production of strongly adherent coatings on an inorganic or organic substrate, in which process In a first stepa) the inorganic or organic substrate is subjected to the action of a low-temperature plasma discharge, a corona discharge, high-energy UV radiation or electron radiation, the radiation or discharge is then discontinued, in a further step b) at least one electron- or H-donor compound, selected from the group consisting of amines, thiols and thioethers, each containing at least one ethylenically unsaturated group, is applied to the inorganic or organic substrate in vacuo or at normal pressure and reacted with the free radicals formed there in step a) to precoat the substrate with a coinitiator, and c1) the substrate so precoated with coinitiator is coated with a composition comprising at least one ethylenically unsaturated monomer or oligomer and a photoinitiator, and the coating is cured by means of electromagnetic and/or ionising radiation; or c2) the substrate so precoated with coinitiator is coated with a composition comprising at least one ethylenically unsaturated monomer or oligomer and one or more thermally activatable initiators, and the coating is cured thermally.