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:
Mar. 19, 2013
Filed:
Sep. 19, 2007
Michael Dornbusch, Ludenscheid, DE;
Elke Austrup, Nordkirchen, DE;
Horst Hintz-bruning, Munster, DE;
Michael Dornbusch, Ludenscheid, DE;
Elke Austrup, Nordkirchen, DE;
Horst Hintz-Bruning, Munster, DE;
BASF Coatings GmbH, Munster, DE;
Abstract
The invention relates to an aqueous coating material for metallic substrates, comprising a water-dispersible and/or water-soluble polymer P with a gradient in the concentration of covalently bonded hydrophilic groups along the main polymer chain, the polymer P having covalently bonded ligands A, which form chelates with the metal ions released during the corrosion of the substrate and/or with the substrate surface, and having crosslinking functional groups B, which with themselves, with further complementary functional groups B' of the polymer P and/or with further functional groups B and/or B′ are able to form covalent bonds to crosslinkers V.