ENCAPSULATION OF PALETTE FLAKES WITH NANOSTRUCTURED COPPER OXIDE AS LIDAR REFLECTIVE BLACK PIGMENTS
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Feb 3, 2023
filing date -
Feb 3, 2023
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Abstract
An encapsulated palette flake includes a palette flake having a first surface and a second surface, and a layer on at least one of the first surface and the second surface. A blackness My of the encapsulated palette flake is greater than or equal to 110 and less than or equal to 140. A reflectivity of the encapsulated palette flake in a visible spectrum of electromagnetic radiation that is less than or equal to 10.0%. A reflectivity of the encapsulated palette flake in a near-IR and LiDAR spectrum of electromagnetic radiation that is between 10% and 90%. A method for forming an encapsulated palette flake includes combining a base solution comprising palette flakes and a precipitating agent with a solution comprising a copper source, drying the precipitate, and calcining the dried precipitate. The precipitating agent is selected from sodium hydroxide, sodium carbonate, or ammonium carbonate.
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