MUMBAI, India, Oct. 11 -- Intellectual Property India has published a patent application (202517089543 A) filed by Evonik Operations Gmbh, Essen, Germany, on Sept. 19, for 'aluminum oxide dispersions for use as separator coating in secondary batteries.'
Inventor(s) include Neb, Daniel; Esken, Daniel; Cornelius, Maximilian; Mohr, Lukas; Doring, Manja; and Bergmann, Gabriele.
The application for the patent was published on Oct. 10, under issue no. 41/2025.
According to the abstract released by the Intellectual Property India: "An aqueous dispersion containing aluminum oxide powder, characterized in that the aluminum oxide powder is present in the form of aggregated primary particles with an aggregate particle size distribution with a median aggregate particle size (D50) of 220 nm to 500 nm, as determined by dynamic light scattering measurement, and wherein the aluminum oxide powder has a BET of 10 m2/g to 100 m2/g, in an amount of at least 20 wt.%, preferably 40 to 60 wt.%, and more preferably 50 to 60 wt.% based on the total weight of the dispersion, and that the dispersion further comprises: - at least one carboxylic acid from the group consisting of dicarboxylic acids and/or hydroxy tricarboxylic acids having from 2 to 7 carbon atoms, and - at least one amino alcohol having from one to six carbon atoms, preferably DMEA (dimethylethanolamine), 2-Amino-2-Methyl-1 -Propanol."
The patent application was internationally filed on Feb. 12, 2024, under International application No.PCT/EP2024/053425.
Disclaimer: Curated by HT Syndication.
