Primer-initiated cure of structural adhesive film
US12098314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2019 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Dec 24, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2301/416
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.