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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.:

US 9103040 B1

PDFFull Text
Date of Patent:
Aug. 11, 2015

Filed:

Sep. 18, 2013

Method of applying a magnesium-containing powder to the surface of an aluminum or aluminum alloy substrate

Applicant:

Ndsu Research Foundation, Fargo, ND (US);

Inventors:

Gordon P. Bierwagen, Fargo, ND (US);

Michael E. Nanna, Moorhead, MN (US);

Dante Battocchi, Fargo, ND (US);

Assignee:

NDSU RESEARCH FOUNDATION, Fargo, ND (US);

Attorney:

J.A. Lindeman & Co., PLLC

Primary Examiner:

Brieann R Fink

Int. Cl.
CPC ...
C08G 18/10 (2006.01); C09D 175/04 (2006.01); C08K 3/08 (2006.01); C23F 11/18 (2006.01); B05D 3/10 (2006.01); B05D 7/16 (2006.01); C08G 18/28 (2006.01); C08G 18/58 (2006.01); C08G 18/79 (2006.01); C09D 5/10 (2006.01); C09D 163/00 (2006.01); C09D 175/02 (2006.01); B05D 5/00 (2006.01); B05D 7/14 (2006.01); B05D 1/18 (2006.01); B05D 7/00 (2006.01);
U.S. Cl.
CPC ...
C23F 11/182 (2013.01); B05D 3/102 (2013.01); B05D 5/00 (2013.01); B05D 7/14 (2013.01); B05D 7/16 (2013.01); C08G 18/10 (2013.01); C08G 18/289 (2013.01); C08G 18/2865 (2013.01); C08G 18/58 (2013.01); C08G 18/792 (2013.01); C09D 5/10 (2013.01); C09D 163/00 (2013.01); C09D 175/02 (2013.01); C09D 175/04 (2013.01); B05D 1/185 (2013.01); B05D 7/54 (2013.01); B05D 2202/25 (2013.01); B05D 2601/20 (2013.01); C08G 2150/90 (2013.01); C08G 2270/00 (2013.01); C08K 3/08 (2013.01);
Abstract

Disclosed are methods of treating a metal to improve the metal's corrosion resistance. The method includes applying, to the surface of the metal, a coating which comprises magnesium powder and a binder. The present invention also relates to a coating composition that includes magnesium powder and a silane modified epoxy isocyanate hybrid polymer or prepolymer. The inventors have found that corrosion resistance (as determined by Prohesion™ exposure in accordance with ASTM D5894-96, which is hereby incorporated by reference) in excess of 3,000 hours on 2024 T-3 aluminum alloy can be achieved with the methods and coating compositions of the present invention.

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