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AssigneeNissan Chemical Industries, Ltd.
InventorsKeiko Yoshitake, Naohiko Suemura, Megumi Shimada, Ichitaro Kikunaga
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A silica sol which has excellent moisture absorption resistance and stability as well as high purity and which does not cause coloring of a solvent or a resin to which the silica sol has been applied. The silica sol contains high-purity silica particles, water and/or a liquid organic medium serving as a dispersion medium, and an organic base compound, the silica particles being dispersed in the dispersion medium, wherein the silica particles satisfy the following requirements (a) to (c): (a) the silica particles have a specific surface area, as determined through a nitrogen absorption method, of 20 to 500 m2/g; (b) the silica particles have a moisture absorption amount per specific surface area thereof of 0.5 mg/m2 or less; and (c) the organic base compound is not substantially contained in the inside thereof.
A silica sol, wherein the silica sol comprises silica particles produced through hydrolysis of a silicon alkoxide without using an organic base, water and/or a liquid organic medium serving as a dispersion medium, and at least one of a secondary amine and a tertiary amine, the silica particles being dispersed in the dispersion medium, wherein the silica particles satisfy the following requirements (a) to (c):
Dependencies are inferred from the claim text.