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:
Apr. 05, 2005
Filed:
Oct. 11, 2001
Christian Jung, Oberhaid, DE;
Toshiaki Shimakura, Fchikawa, JP;
Norbert Maurus, Langen, DE;
Heribert Domes, Weilmunster, DE;
Christian Jung, Oberhaid, DE;
Toshiaki Shimakura, Fchikawa, JP;
Norbert Maurus, Langen, DE;
Heribert Domes, Weilmunster, DE;
Chemetall GmbH, Frankfurt am Main, DE;
Abstract
The invention relates to a method for coating a metal surface with an aqueous composition, characterized in that the composition contains, in addition to water: a) at least one organic film former that contains at least one water-soluble or water-dispersible polymer with an acid number ranging from 5 to 200, b) at least one particulate inorganic compound with an average particle diameter measured by a scanning electron microscope in the range of from 0.005 to 0.3μ, c) at least one slip additive and/or at least one corrosion inhibitor, d) optionally at least one organic solvent, e) optionally at least one silane and/or siloxane, f) optionally at least one cross-linking agent, and g) optionally at least one chromium (VI) compound. The clean metal surface is contacted with the aqueous composition and a particle-containing film is formed on the metal surface which is then dried. The dried and optionally also cured film has a layer thickness ranging from 0.01 to 10 μm. The invention further relates to a corresponding aqueous composition.