Ultraviolet-shielding particle coated with silicon oxide, aqueous composition containing ultraviolet-shielding particle coated with silicon oxide, and cosmetic
AssigneeSumitomo Osaka Cement Co., Ltd.
InventorsTetsuro Itagaki, Hirokazu Matsushita, Norito Morishita
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Abstract
In an ultraviolet-shielding particle coated with silicon oxide of the present invention, a surface of the ultraviolet-shielding particle is coated with a silicon oxide coat, at least one functional group selected from the group consisting of an alkyl group, an alkenyl group, and a cycloalkyl group is present on a surface of the silicon oxide coat, and a content of the functional group is 0.0001% by mass or more and 0.30% by mass or less.
Claims10
An ultraviolet-shielding particle coated with silicon oxide formed by coating a surface of the ultraviolet-shielding particle with a silicon oxide coat,
- wherein a content of silicon oxide in the silicon oxide coat is 10% by mass to 40% by mass based on a total amount of the ultraviolet-shielding particle coated with silicone oxide,
- wherein at least one functional group selected from the group consisting of an alkyl group, an alkenyl group, and a cycloalkyl group is present on a surface of the silicon oxide coat, and
- a content of the at least one functional group is 0.0001% by mass to 0.30% by mass or based on a total amount of the ultraviolet-shielding particle coated with silicon oxide.
Dependencies are inferred from the claim text.