The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2001
Filed:
Nov. 22, 1999
Karin Maag, Haltorn, DE;
Karl-Friedrich Dössel, Wuppertal, DE;
Herberts GmbH & Co. KG, Wuppertal, DE;
Abstract
A process for lacquer coating substrates with a colored and/or effect base lacquer and a clear lacquer topcoat, in which a colored and/or effect base lacquer layer of a base lacquer coating composition is applied onto a substrate and is provided in a wet-on-wet process with a clear lacquer coating. Before being jointly stoved or jointly cured with the base lacquer layer, the uncured clear lacquer layer is exposed to high-energy radiation. In the clear lacquer coating composition, the resin solids content contains 50 to 98 wt. % of a system A) thermally curable by addition and/or condensation reactions, which system contains substantially no free-radically polymerisable double bonds and substantially no groups capable of reacting in another way with free-radically polymerisable double bonds of a system B). The resin solids content further contains 2 to 50 wt. % of a system B) which is curable under the action of high-energy radiation by free-radical polymerisation of olefinic double bonds, wherein the weight percentages adds up to 100 wt. % and the C═C equivalent weight of the total resin solids content of A) and B) is between 300 and 10000. Clear lacquer coating compositions made by the process are also described.