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US 10,590,312 B2Granted
Color-changing adhesive composition
Assignee3M Innovative Properties Company
InventorsAdrian T. Jung, Santhosh K. Chandrabalan, Joanna K. Wegrzynska, Daniel W. Wuerch, Christian E. Claus
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Abstract
The present disclosure relates to a color-changing adhesive composition, for example, a color-changing adhesive composition suitable in the preparation of composite materials. The present disclosure also relates to methods of preparing composite materials using color-changing adhesive compositions and to composite-materials comprising such color-changing compositions.
Claims13
An adhesive composition comprising
- a dye,
- a sprayable adhesive,
- one or more propellants selected from liquefied hydrocarbons and compressed gases;
- and
- without a curable epoxy resin;
- wherein the dye is chosen from triarylmethane compounds;
- wherein the adhesive composition is sprayable via the one or more propellants and has an initial color;
- wherein the adhesive composition is capable of changing color to a final color upon contacting a curing composition comprising one or more curing agents.
5 more elements
An adhesive composition comprising
- a dye,
- a sprayable adhesive,
- one or more propellants selected from liquefied hydrocarbons and compressed gases, and
- without a curable epoxy resin;
- wherein the dye is Brilliant Green;
- wherein the adhesive composition is sprayable via the one or more propellants and has an initial color;
- wherein the adhesive composition is capable of changing color to a final color upon contacting a curing composition comprising one or more curing agents;
- wherein the initial color is different from the final color;
- and
- wherein the one or more curing agents are chosen from trioxatridecane diamine, dicyandiamide curing agent, and anhydride curing agent methyl endomethylene tetrahydrophthalic anhydride.
7 more elements
Dependencies are inferred from the claim text.