Hybrid adhesives, articles, and methods
Assignee3M Innovative Properties Company
InventorsJie Yang, Dmitriy Salnikov, Jason W. Balich
Life of this patent
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Abstract
Described are curable adhesives containing a polyacrylate component and an epoxy component, and that are preferably optically clear, as well as methods of using such adhesives and optical components and optical elements prepared from the adhesives.
Claims41
A curable adhesive composition comprising
- polyacrylate component,
- epoxy component, and
- cationic initiator,
- wherein the uncured adhesive is optically clear such that
- the luminous transmission of the composition is greater than 90%,
- the haze of the composition is less than 2%, and
- the opacity of the composition is less than 1%,
- wherein the uncured, curable adhesive can be cured to form an adhesive comprising an interpenetrating polymer network, and
- wherein after aging the cured adhesive at 90° C. for 500 hours
- the luminous transmission of the cured and aged adhesive is greater than 90%,
- the haze of the cured and aged adhesive is less than 2%, and
- the opacity of the cured and aged adhesive is less than 1%.
A multi-layer assembly comprising a cured adhesive comprising an interpenetrating polymer network comprising polyacrylate component and epoxy component, wherein the adhesive composition is optically clear, and wherein the adhesive bonds a low moisture vapor transfer layer to an outgassing layer.
A multi-layer assembly comprising a cured adhesive comprising an interpenetrating polymer network comprising polyacrylate component and epoxy component, wherein the adhesive composition is optically clear, and wherein the assembly comprises a fragile layer adhered to the adhesive.
A method of preparing a multi-layer article, the method comprising coating onto a release liner a curable adhesive composition comprising
- polyacrylate component,
- epoxy component,
- cationic initiator, and
- solvent
- drying the curable adhesive composition to remove the solvent, laminating the curable adhesive composition on a substrate, and activating the initiator to cure the adhesive.
A method of providing structural support to a fragile optical element, the method comprising applying a curable adhesive composition comprising polyacrylate component, epoxy component, and cationic initiator, to a surface of the fragile optical element, and curing the adhesive.
Dependencies are inferred from the claim text.