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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 10683441 B1

PDFFull Text
Date of Patent:
Jun. 16, 2020

Filed:

Mar. 02, 2017

Composition including epoxy adhesive and aluminum flakes and method for using the same

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Jay S. Schlechte, Oakdale, MN (US);

Peyton R. Nosbusch, East Bethel, MN (US);

George M. Stout, Maplewood, MN (US);

Michael A. Kropp, Cottage Grove, MN (US);

Assignee:

3M Innovative Properties Company, St. Paul, MN (US);

Attorney:
Primary Examiner:

Michael J Feely

Int. Cl.
CPC ...
B32B 27/38 (2006.01); B32B 27/26 (2006.01); B32B 27/20 (2006.01); B32B 27/18 (2006.01); C09J 163/04 (2006.01); C09J 163/00 (2006.01); C08G 59/50 (2006.01); C08G 59/32 (2006.01); C08G 59/24 (2006.01); C08K 9/04 (2006.01); C08K 7/00 (2006.01); C08K 3/08 (2006.01); F16B 11/00 (2006.01); B32B 7/12 (2006.01); B32B 37/12 (2006.01); C09J 5/00 (2006.01); C09J 11/04 (2006.01); C09J 11/08 (2006.01); B32B 15/092 (2006.01);
U.S. Cl.
CPC ...
C09J 163/00 (2013.01); B32B 7/12 (2013.01); B32B 37/12 (2013.01); C08G 59/50 (2013.01); C09J 5/00 (2013.01); C09J 11/04 (2013.01); C09J 11/08 (2013.01); F16B 11/006 (2013.01); B32B 2037/1253 (2013.01); B32B 2037/1269 (2013.01); B32B 2250/02 (2013.01); B32B 2255/26 (2013.01); B32B 2305/30 (2013.01); B32B 2305/72 (2013.01); B32B 2307/748 (2013.01); B32B 2311/24 (2013.01); B32B 2363/00 (2013.01); B32B 2605/00 (2013.01); C09J 2451/00 (2013.01); C09J 2463/00 (2013.01);
Abstract

A curable adhesive composition includes a curable epoxy resin, an amine curing agent, a toughening agent, and aluminum flakes. The aluminum flakes include a fatty acid milling aid on at least a portion of their surfaces. The aluminum flakes were heated after milling. An article includes an adhesive composition cured between at least two members. The cured adhesive composition includes the heat-treated aluminum flakes within a toughened epoxy resin cured with an amine curing agent. The method includes applying the curable adhesive composition of described above to a surface of at least one of two or more members, joining the members so that the curable adhesive composition is sandwiched between the two or more members, and curing the curable adhesive composition to form an adhesive bond between the two or more members.

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