Primer-initiated cure of structural adhesive film

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United States of America

PATENT NO 12163070
APP PUB NO 20210102097A1
SERIAL NO

15733470

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Abstract

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Curable adhesive films, primers for adhesion of curable adhesive films, and adhesive systems comprising adhesive films and primers are provided. In some embodiments, an adhesive system comprises: I) a curable adhesive free-standing film comprising a blend of: a) a first film-forming polymer or oligomer; b) a first species comprising first unsaturated free-radically polymerizable groups, which may be a) or a species other than a); and c) a first transition metal cation; and II) a primer for adhesion of a curable adhesive free-standing film to a first substrate comprising an oxidizing agent. In some embodiments, an adhesive system comprises: I) a curable adhesive free-standing film comprising an outer surface bearing embossed air bleed channels capable of aiding in escape of air during application of the outer surface to a primed substrate; and II) a primer comprising components that initiate cure of the curable adhesive free-standing film.

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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYP O BOX 33427 ST PAUL MN 55133-3427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Claussen, Kai U Munich, DE 14 12
Khurana, Rachna Inver Grove Heights, US 10 13
Kugel, Alexander J Woodbury, US 46 127
Moren, Dean M North St. Paul, US 57 769
Ranade, Shantanu R Woodbury, US 9 18
Sikorski,, Jr William H Birchwood Village, US 8 105
Townsend, Erik M South St. Paul, US 27 30

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