US 11,987,520 B2
Surface-treated infrared absorbing fine particle dispersion liquid and infrared absorbing transparent substrate
Hirofumi Tsunematsu, Isa (JP); and Takeshi Chonan, Isa (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Appl. No. 17/054,789
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
PCT Filed Apr. 18, 2019, PCT No. PCT/JP2019/016586
§ 371(c)(1), (2) Date Nov. 12, 2020,
PCT Pub. No. WO2019/216152, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. 2018-092604 (JP), filed on May 11, 2018.
Prior Publication US 2021/0214273 A1, Jul. 15, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C01G 41/02 (2006.01); C03C 17/00 (2006.01); C03C 17/06 (2006.01); C03C 17/30 (2006.01); G02B 5/20 (2006.01)
CPC C03C 17/30 (2013.01) [C01G 41/02 (2013.01); C03C 17/007 (2013.01); C03C 17/06 (2013.01); G02B 5/208 (2013.01); C03C 2217/70 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A surface-treated infrared absorbing fine particle dispersion liquid in which surface treated infrared absorbing fine particles are dispersed in a liquid medium, wherein
the surface-treated infrared absorbing fine particles are infrared absorbing fine particles, each surface of which is coated with a coating layer containing at least one selected from a hydrolysis product of a metal chelate compound, a polymer of the hydrolysis product of the metal chelate compound, a hydrolysis product of a metal cyclic oligomer compound, and a polymer of the hydrolysis product of the metal cyclic oligomer compound, wherein a thickness of the coating layer is 0.5 nm or more and 2 nm or less,
the surface-treated infrared absorbing fine particle dispersion liquid contains a glass coating agent selected from the group consisting of silane coupling agents, polysilazane, and polyorganosilane, and
the glass coating agent is liquid at room temperature.