US 12,448,521 B2
Near-infrared-shielding material
Haruko Horiguchi, Mie (JP); and Shinya Katagiri, Aichi (JP)
Assigned to NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo (JP)
Appl. No. 17/629,160
Filed by Nippon Sheet Glass Company, Limited, Tokyo (JP)
PCT Filed Jul. 8, 2020, PCT No. PCT/JP2020/026763
§ 371(c)(1), (2) Date Jan. 21, 2022,
PCT Pub. No. WO2021/014981, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 2019-135279 (JP), filed on Jul. 23, 2019.
Prior Publication US 2022/0267604 A1, Aug. 25, 2022
Int. Cl. C09C 1/00 (2006.01); A61K 8/02 (2006.01); A61K 8/25 (2006.01); A61K 8/29 (2006.01); A61Q 17/04 (2006.01); C09D 5/32 (2006.01); C09D 5/36 (2006.01); C09D 7/40 (2018.01); C09D 7/62 (2018.01)
CPC C09C 1/0024 (2013.01) [A61K 8/0266 (2013.01); A61K 8/25 (2013.01); A61K 8/29 (2013.01); A61Q 17/04 (2013.01); C09D 5/32 (2013.01); C09D 5/36 (2013.01); C09D 7/62 (2018.01); C09D 7/70 (2018.01); A61K 2800/621 (2013.01); A61K 2800/651 (2013.01); C01P 2004/20 (2013.01); C01P 2004/54 (2013.01); C01P 2004/84 (2013.01); C09C 2200/102 (2013.01); C09C 2200/301 (2013.01); C09C 2200/302 (2013.01); C09C 2210/10 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A near-infrared-shielding material comprising a plurality of flaky particles, wherein
each of the plurality of flaky particles comprises a flaky substrate and a single-layer film formed on a principal surface of the flaky substrate,
each of the plurality of flaky particles does not include a metal particle or a non-metal particle attached to an interface between the flaky substrate and the single-layer film and to a surface of the single-layer film,
the flaky substrate has an average thickness of 0.1 μm to 0.6 μm, and
the flaky substrate is a glass flake,
the single-layer film comprises titanium oxide,
the single-layer film has an average thickness of 95 nm to 140 nm, and
the near-infrared-shielding material has a light reflectance of 40% or more between wavelengths of 800 nm and 1400 nm.