Patent ID: 6165561
Filing Date: 2000-12-26
Classification: B05D,C09D

Abstract:
A process for the production of a multilayer lacquer coating on a substrate having an autophoretically coatable, metallic surface, in which a first priming coat of an autophoretically depositable coating composition is autophoretically deposited and then stoved and one or more subsequent coats are then applied by spraying,wherein the autophoretically depositable coating composition is provided with at least one of the following:(i) the coating composition contains one or more constituents having an adhesion promoting action;(ii) before one or more further coats are applied by spraying, the stoved priming layer produced by autophoretic deposition is treated with at least one treatment selected from the group consisting of physical treatment, chemical treatment with an aggressive chemical agent and application of an adhesion promoting coat;wherein in coating a three-dimensional substrate, the first autophoretically deposited coating is applied over the entire surface and the at least one treatment selected from the group consisting of physical treatment, chemical treatment with an aggressive chemical agent and application of an adhesion promoting coat, is performed only on external areas.