US 11,654,664 B2
Composite cooling film comprising a reflective nonporous organic polymeric layer and a UV-protective layer
Timothy J. Hebrink, Scandia, MN (US); Milind B. Sabade, Woodbury, MN (US); Laura R. Nereng, Woodbury, MN (US); Caleb T. Nelson, McKinney, TX (US); James P. Burke, St. Paul, MN (US); and Vivian W. Jones, Woodbury, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/787,188
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Jan. 13, 2021, PCT No. PCT/IB2021/050230
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/144714, PCT Pub. Date Jul. 22, 2021.
Claims priority of provisional application 62/961,859, filed on Jan. 16, 2020.
Prior Publication US 2023/0019944 A1, Jan. 19, 2023
Int. Cl. B32B 27/20 (2006.01); C08K 3/22 (2006.01); C08K 3/26 (2006.01); C08K 3/30 (2006.01); C08K 3/34 (2006.01); B32B 3/30 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/40 (2006.01); G02B 5/20 (2006.01); G02B 5/26 (2006.01); G02B 1/04 (2006.01); C08J 5/12 (2006.01)
CPC B32B 27/20 (2013.01) [B32B 3/30 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/304 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/322 (2013.01); B32B 27/40 (2013.01); C08J 5/124 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 3/30 (2013.01); C08K 3/346 (2013.01); G02B 1/04 (2013.01); G02B 5/208 (2013.01); G02B 5/26 (2013.01); B32B 2250/24 (2013.01); B32B 2255/26 (2013.01); B32B 2264/104 (2013.01); B32B 2264/1022 (2020.08); B32B 2264/1023 (2020.08); B32B 2264/1025 (2020.08); B32B 2264/1027 (2020.08); B32B 2307/302 (2013.01); B32B 2307/416 (2013.01); B32B 2307/71 (2013.01); B32B 2307/732 (2013.01); C08J 2323/00 (2013.01); C08J 2327/00 (2013.01); C08J 2333/12 (2013.01); C08J 2375/04 (2013.01); C08K 2003/2227 (2013.01); C08K 2003/2237 (2013.01); C08K 2003/2296 (2013.01); C08K 2003/265 (2013.01); C08K 2003/3045 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A composite cooling film comprising:
a reflective nonporous inorganic-particle-filled organic polymeric layer that exhibits an average reflectance of electromagnetic radiation of at least 85% over a wavelength range from 400 to 2500 nanometers,
an ultraviolet-protective layer of organic polymeric material that is disposed outwardly of the reflective nonporous inorganic-particle-filled organic polymeric layer;
and,
an antisoiling layer of organic polymeric material, the antisoiling layer being disposed outwardly of the reflective nonporous inorganic-particle-filled organic polymeric layer and comprising an outwardly-facing, exposed antisoiling surface;
wherein the composite cooling film has an average absorbance over the wavelength range 8-13 microns of at least 0.85.