RADIATIVE COOLING MULTILAYER FILMS

WIPO Patent Application WO/2022/114673

A1

Disclosed is a radiative cooling film that includes a transparent-type radiative cooling multilayer film and a reflective-type radiative cooling film and is structured to allow for the substantial implementation of radiative cooling performance on an object and the mass production. The present invention provides a radiative cooling multilayer film comprising: a first infrared radiation layer containing a first polymer in which dielectric particles with an average particle diameter of 0.01 to 30 μm are dispersed in a content of 0.1 to 25 wt%, and selectively radiatively cooling an object, from which heat is to be removed, at an average emissivity of 0.5 to 1 with respect to radiation in a wavelength range of 8-13 μm; a second infrared radiation layer disposed above the first infrared radiation layer and emitting the heat resulting from the selective radiative cooling to the outside by comprising a second polymer; and a metal reflective layer disposed below the first infrared radiation layer to reflect solar light and having a thickness of 20 to 600 nm.

PARK SUN A (KR)
AHN JOON GYU (KR)
CHOI BYUNG DOO (KR)
LEE HYUN SUP (KR)

PCT/KR2021/017028

June 02, 2022

November 18, 2021

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LOTTE CHEMICAL CORP (KR)

F25B23/00; B32B7/023; B32B7/027; B32B7/12; B32B27/08; B32B27/18; B32B27/36; C23C14/20; C23C14/30; F28F13/18

WO2020022156A1

2020-01-30

CN110216924A	2019-09-10
US20170248381A1	2017-08-31
CN110103559A	2019-08-09
KR102036069B1	2019-10-24

PARK, Sang Hoon (KR)

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