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. 12, 2006
Filed:
Jun. 21, 2004
Hans-josef Laas, Bergisch Gladbach, DE;
Christoph Gürtler, Köln, DE;
Reinhard Halpaap, Odenthal, DE;
Michael Grahl, Leverkusen, DE;
Peter Thometzek, Stuttgart, DE;
James Rawlins, Leverkusen, DE;
Hans-Josef Laas, Bergisch Gladbach, DE;
Christoph Gürtler, Köln, DE;
Reinhard Halpaap, Odenthal, DE;
Michael Grahl, Leverkusen, DE;
Peter Thometzek, Stuttgart, DE;
James Rawlins, Leverkusen, DE;
Bayer Materialscience AG, Leverkusen, DE;
Abstract
The invention relates to the use of special mixtures of at least two polycarboxylic acids as crosslinker components for thermally curing powder-lacquer binding agents having groups that are capable of reacting with carboxyl groups. The mixtures include at least two polycarboxylic acids each melting above 95° C. and having up to 20 carbon atoms and consist of at least 5 wt. %, of the polycarboxylic acid with the lowest melting point and at least 10 wt. %, of the polycarboxylic acid with the highest melting point of all polycarboxylic acids present in the mixture to at least 5 wt. %. Additionally, the polycarboxylic acid mixture is a solid below 40° C. and a liquid above 160° C.