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:
Feb. 18, 2025
Filed:
Sep. 23, 2020
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Elisabeth Cura, Duesseldorf, DE;
Bernhard H. Koch, Neuss, DE;
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C09J 5/08 (2006.01); C09J 7/35 (2018.01); C09J 11/08 (2006.01); C09J 163/00 (2006.01);
U.S. Cl.
CPC ...
C09J 5/08 (2013.01); C09J 7/35 (2018.01); C09J 11/08 (2013.01); C09J 163/00 (2013.01); C09J 2301/304 (2020.08); C09J 2301/312 (2020.08); C09J 2301/408 (2020.08); C09J 2400/163 (2013.01);
Abstract
An expandable structural adhesive film for bonding metal parts. The adhesive film comprises at least one first epoxy compound; at least one epoxy curing agent; at least one blowing agent; at least one film-forming agent; and at least one impact modifier. The structural adhesive film exhibits an elongation at break of at least 300% according to tensile test DIN EN ISO 527 and a free expansion rate according to EN 2667-3 of at least 45%.