US 11,884,790 B2
Near-infrared shielding ultrafine particle dispersion body, near-infrared shielding intermediate film, near-infrared shielding laminated structure, and method for producing near-infrared shielding ultrafine particle dispersion body
Hiroshi Kobayashi, Ichikawa (JP); Kennichi Fujita, Ichikawa (JP); Hirofumi Tsunematsu, Isa (JP); and Takeshi Chonan, Isa (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Appl. No. 16/616,600
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
PCT Filed May 17, 2018, PCT No. PCT/JP2018/019109
§ 371(c)(1), (2) Date Apr. 2, 2020,
PCT Pub. No. WO2018/216595, PCT Pub. Date Nov. 29, 2018.
Claims priority of application No. 2017-103971 (JP), filed on May 25, 2017.
Prior Publication US 2020/0270401 A1, Aug. 27, 2020
Int. Cl. C08J 3/02 (2006.01); C08K 3/22 (2006.01); C08L 67/00 (2006.01); C01G 41/02 (2006.01); C09D 5/32 (2006.01); B32B 17/10 (2006.01); C08J 7/043 (2020.01); B82Y 40/00 (2011.01)
CPC C08J 7/043 (2020.01) [B32B 17/10 (2013.01); B32B 17/10678 (2013.01); B32B 17/10761 (2013.01); B32B 17/10788 (2013.01); C01G 41/02 (2013.01); C08J 3/02 (2013.01); C08K 3/22 (2013.01); C08L 67/00 (2013.01); C09D 5/32 (2013.01); B32B 2307/71 (2013.01); B32B 2307/712 (2013.01); B82Y 40/00 (2013.01); C01P 2002/72 (2013.01); C01P 2006/60 (2013.01); C08K 2003/2258 (2013.01); C08K 2201/011 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A near-infrared shielding ultrafine particle dispersion body in which ultra-fine particles having near-infrared shielding properties are dispersed in a solid medium,
wherein the ultrafine particles are composite tungsten oxide ultrafine particles represented by a general formula MxWyOz in which M is one or more elements selected from the group consisting of H, He, Li, Na, Rb, Cs, alkaline earth metal, rare earth element, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Jr, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I, W is tungsten, O is oxygen, x, y, and z satisfy 0.001≤x/y≤1, 2.0<z/y≤3.0, and have an XRD peak top intensity ratio value of 0.13 or more based on an XRD peak intensity ratio value of 1 on plane (220) of a silicon powder standard sample,
a dispersed particle size of the composite tungsten oxide ultrafine particles is 10 nm or more and 200 nm or less,
a crystallite size of the composite tungsten oxide ultrafine particles is 10 nm or more and 200 nm or less,
each of the composite tungsten oxide ultrafine particles is made of a single crystal in which a volume ratio of an amorphous phase in the composite tungsten oxide ultrafine particles is less than 50%,
the solid medium contains a resin binder and a weather resistance improver,
the weather resistance improver includes at least one selected from the group consisting of a benzotriazole-based UV absorber, a triazine-based UV absorber, and a benzophenone-based UV absorber, and
a content of a volatile component contained in the composite tungsten oxide ultrafine particles is 1.3 mass % or more and 1.6 mass % or less.