Coating to Cool a Surface by Passive Radiative Cooling
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United States of America Patent
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Issued Date -
Mar 28, 2024
app pub date -
May 9, 2023
filing date -
Feb 27, 2017
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Abstract
Disclosed herein in is a radiative cooling formulation including a solvent for providing a viscosity of a radiative cooling material for application onto a surface to be passively cooled. The radiative cooling formulation includes a binder for the radiative cooling material's integrity and bonding to the surface to be passively cooled. The radiative cooling formulation includes a polymer, which, in combination with the binder, provides one or more properties in the radiative cooling material, including a reflectance of or greater than 55% in a wavelengths range of 0.3 to 2.5 microns and a first thermal emissivity peak value greater than 0.85 at a first wavelength in a range of 8 to 13 microns (μm). For example, the polymer is a latex material including a styrene based copolymer.
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