Near infrared reflective copper oxide coated particles
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United States of America Patent
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Dec 5, 2023
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N/A
app pub date -
Feb 5, 2021
filing date -
Dec 18, 2020
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Abstract
A copper oxide coated pigment including a particle having an outer surface, and a layer of copper oxide on the outer surface. The pigment has a reflectivity of electromagnetic radiation in a visible spectrum less than or equal to 5%, and a reflectivity of electromagnetic radiation in a near-IR and LiDAR spectrum greater than or equal to 5%. The particle is cobalt oxide or carbon black. A method for forming copper oxide coated particles includes combining a precipitating agent with a solution of copper nitrate and particles, forming coated particles. The particles are cobalt oxide or carbon black. Washing the particles, obtaining washed coated particles, and filtering the washed coated particles, obtaining filtered coated particles. Drying the filtered coated particles, obtaining dried coated particles, and calcining the dried coated particles to form the copper oxide coated particles.
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