US 12,435,223 B2
Dark powder dispersion liquid, dark powder dispersion body and colored layer-attached base material
Takafumi Ito, Isa (JP); Keiichi Sato, Isa (JP); and Mika Okada, Isa (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Appl. No. 17/924,438
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
PCT Filed Apr. 9, 2021, PCT No. PCT/JP2021/015021
§ 371(c)(1), (2) Date Nov. 10, 2022,
PCT Pub. No. WO2021/246055, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 2020-098196 (JP), filed on Jun. 5, 2020; and application No. 2020-191647 (JP), filed on Nov. 18, 2020.
Prior Publication US 2023/0272225 A1, Aug. 31, 2023
Int. Cl. C09D 5/03 (2006.01); C09D 7/20 (2018.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01); C09D 157/12 (2006.01)
CPC C09D 5/032 (2013.01) [C09D 5/031 (2013.01); C09D 5/035 (2013.01); C09D 7/20 (2018.01); C09D 7/61 (2018.01); C09D 7/67 (2018.01); C09D 7/68 (2018.01); C09D 7/70 (2018.01); C09D 157/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A dark powder dispersion liquid, comprising:
a dark pigment, wherein the dark pigment is one or more kinds selected from the group consisting of Cu—Fe—Mn composite oxide pigment, Cu—Cr composite oxide pigment, Cu—Fe—Mn composite oxide pigment, Cu—Fe—Mn—Ni composite oxide pigment, Cu—Cr—Fe composite oxide pigment, Fe—Cr composite oxide pigment, Co—Cr—Fe composite oxide pigment, titanium black, titanium nitride, titanium oxynitride, dark azo pigment, perylene black pigment, and aniline black pigment;
composite tungsten oxide particles;
and a solvent,
wherein a mass ratio of the dark pigment to the composite tungsten oxide particles (mass of dark pigment/mass of composite tungsten oxide fine particles) is 0.01 or more and 5 or less.