Mitsui Mining & Smelting. has filed a patent for a polyoxo niobate compound dispersion. The compound is dispersed in a mixed solvent containing lower alcohol, water, and specific amine compounds. Water content is at least 5.0% by mass, with specific ratios of amine compound solvent and lower alcohol. GlobalData’s report on Mitsui Mining & Smelting gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Mitsui Mining & Smelting, Hydrogen storage alloys was a key innovation area identified from patents. Mitsui Mining & Smelting's grant share as of January 2024 was 30%. Grant share is based on the ratio of number of grants to total number of patents.
The patent application (Publication Number: US20240034935A1) discloses a polyoxo niobate compound dispersion that includes a polyoxo niobate compound dispersed or dissolved in a mixed solvent containing a primary amine, secondary amine, tertiary amine, quaternary ammonium compound, or a combination of these compounds. The dispersion must have a water content of 5.0% by mass or more, an amine compound solvent content of 0.50 or more in terms of a molar ratio relative to niobium (Nb), and the lower alcohol must account for 70% by mass or more of the remaining portion. Additionally, the dispersion must contain 0.1% to 40% by mass of niobium in terms of Nb2O5 and have a light transmittance of 65% or more at a wavelength of 400 nm.
Furthermore, the patent application describes a method for producing the polyoxo niobate compound dispersion by mixing a polyoxo niobate compound precursor, a lower alcohol and/or water, and a primary, secondary, tertiary amine, quaternary ammonium compound, or a combination of these compounds. The precursor must have a molar ratio of ammonium ions to Nb of 0.50 or more. The application also includes an adhesion evaluation method for the dispersion, where the coated film is subjected to a specific peeling test to determine its adhesion properties. The polyoxo niobate compound dispersion is considered to pass the evaluation if the surface of the coated film remains smooth without any peeling after the test is conducted according to specified parameters.
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