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US 11,873,428 B2Granted
Thermosetting adhesive films
AssigneeZephyros, Inc.
InventorsIra Miller, Michael Czaplicki, Michel Awkal
Life of this patent
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Abstract
Flexible films of thermosetting adhesive materials which are non-tacky to the touch are storage stable at room temperature and can be cured at elevated temperature with a short cure time and can be cured to produce a tough flexible adhesive layer including bonding to oily surfaces, the materials are particularly useful in bonding together dissimilar substrates.
Claims20
An article comprising:
- a curable thermosetting epoxy resin based adhesive film which is flexible prior to cure and storage stable at room temperature, the adhesive film being derived from a mixture of:
- (a) an elastomer/epoxy resin adduct;
- (b) a core shell material;
- and
- (c) a curing agent;
- wherein the adhesive film is configured to form an adhesive bond with a metal surface having a layer of about 3 g/m2 of a corrosion preventive oil;
- and
- wherein a tacky coating free of a curing agent is applied to the adhesive film, and the tacky coating is configured to be cured by the curing agent of the adhesive film.
5 more elements
Dependencies are inferred from the claim text.