Process for producing finely divided powdery metal oxide compositions
AssigneeAkzo America Inc.
InventorsFawzy G. Sherif, Francis A. Via
Life of this patent
Estimating the term…
Abstract
A finely divided metal oxide powdery composition, preferably with a narrow particle size distribution, is produced from a particulate, sol-gel derived composition containing agglomerates by heating the particulate composition in the presence of an effective amount of a composition which decomposes upon heating and forms a gas to break at least a portion of the agglomerates so as to yield the desired finely divided ceramic particle composition. Examples of suitable gas-forming agents for use in the present invention include the ammonium salts or amides of organic and inorganic acids, volatile acids, and gases dissolved in a suitable solvent, such as water, alcohol or ammonia.
Claims13
A process for producing a finely divided powdery metal oxide composition which comprises heating a particulate, sol-gel derived metal oxide composition, which contains agglomerates, and to which has been added an effective amount of a composition which decomposes at the temperature to which the metal oxide composition is heated to form a gas to break at least a portion of said agglomerates and to thereby yield said finely divided powdery composition.
Dependencies are inferred from the claim text.