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US 8,137,597 B1Granted
One-part, pressure activated chemiluminescent material
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsLawrence L. Brott, Brian E. O'Toole, Christopher A. Vaiana, Rajesh R. Naik
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Abstract
A one-part, pressure activated chemiluminescent material is disclosed. The free-flowing powder is made by coating microcapsules, filled with a solvent and dye, with a powdered oxalate and a solid source for hydrogen peroxide. The reaction begins when the capsules are crushed, releasing the solvent, which dissolves the oxalate and the source for hydrogen peroxide. The resulting reaction transfers energy to the dye, which produces light.
Claims16
A one-part microencapsulated chemiluminescent system comprising:
- a.) a microcapsule, the microcapsule having an inner core and a liquid impermeable polymer shell surrounding the core;
- b.) a dye and a hydrophobic solvent contained within the core of the microcapsule;
- c.) a coating on the outside of the polymer shell, the coating comprising an oxalate and a source of hydrogen peroxide;
- wherein the liquid impermeable polymer shell serves as a barrier between the dye and the hydrophobic solvent contained within the microcapsule and the oxalate and the source of hydrogen peroxide coating on the outside of the microcapsule polymer shell;
- and wherein when the shell of the microcapsule is broken, the hydrophobic solvent at least partially dissolves the oxalate and the source of hydrogen peroxide, thereby beginning a chemiluminescent reaction.
2 more elements
Dependencies are inferred from the claim text.