Film-initiated cure of structural adhesive film

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12187929
APP PUB NO 20210102095A1
SERIAL NO

15733471

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Abstract

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Curable adhesive free-standing films and adhesive systems comprising such films are provided. In some embodiments, a curable adhesive free-standing film comprises 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); c) a first transition metal cation; d) a reducing agent; and no oxidizing agent. In some embodiments, an adhesive system comprises: I) a first curable adhesive free-standing film as described preceding; and II) a second curable adhesive free-standing film comprising a blend of: e) a second film-forming polymer or oligomer; f) a second species comprising second unsaturated free-radically polymerizable groups, which may be e) or may be a species other than e); and g) an oxidizing agent. In some embodiments, the curable adhesive free-standing films may be pressure sensitive adhesives prior to cure. Methods of use are provided.

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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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