KONPEITO-LIKE INORGANIC OXIDE SOL, ITS PRODUCTION METHOD, AND ABRASIVE INCLUDING THE OXIDE SOL

摘要

PROBLEM TO BE SOLVED: To obtain a Konpeito-like inorganic oxide sol which comprises dispersing the particulates having extremely-uniform particle size in a solvent without including a coarse particle size.

SOLUTION: The minute spherical inorganic oxide particulate having a peculiar shape like Konpeito is obtained by: growing nuclear particles by adding an acidic silicate solution to a nuclear particle dispersion liquid; further growing the nuclear particles by adding again the acidic silicate solution at an addition rate of 1.2 to 1.8 times the initial rate to prepare the Konpeito-like inorganic oxide sol; and centrifuging the resultant sol to remove coarse particles having the mean particle size of ≥800 nm.

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