US 12,473,207 B2
Tantalate dispersion and tantalate compound
Syuhei Hara, Omuta (JP); and Akinori Kumagai, Omuta (JP)
Assigned to MITSUI MINING & SMELTING CO., LTD., (JP)
Appl. No. 18/014,617
Filed by Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
PCT Filed Jun. 3, 2021, PCT No. PCT/JP2021/021134
§ 371(c)(1), (2) Date Jan. 5, 2023,
PCT Pub. No. WO2022/018980, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 2020-125669 (JP), filed on Jul. 22, 2020.
Prior Publication US 2023/0295003 A1, Sep. 21, 2023
Int. Cl. C01G 35/00 (2006.01)
CPC C01G 35/006 (2013.01) [C01P 2002/72 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A tantalate dispersion comprising tantalum or/and tantalate and amine in water,
the tantalate dispersion having an intensity ratio (5.5°/29°) of an intensity at 2θ=5.5° to an intensity at 2θ=29° being 1.00 or more in an X-ray diffraction pattern obtained by subjecting a powder obtained by drying the tantalate dispersion to powder X-ray diffraction measurement using CuKα rays, and having a transmittance at 400 nm that is 40% or more.