- Patent Title: Ultraviolet-shielding particle coated with silicon oxide, aqueous composition containing ultraviolet-shielding particle coated with silicon oxide, and cosmetic
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Application No.: US16476109Application Date: 2018-01-05
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Publication No.: US11141363B2Publication Date: 2021-10-12
- Inventor: Tetsuro Itagaki , Hirokazu Matsushita , Norito Morishita
- Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
- Current Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: JPJP2017-001082 20170106,JPJP2017-001083 20170106
- International Application: PCT/JP2018/000065 WO 20180105
- International Announcement: WO2018/128189 WO 20180712
- Main IPC: A61K8/06
- IPC: A61K8/06 ; A61K8/25 ; A61K8/58 ; A61Q17/04 ; A61K8/27 ; A61K8/28

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.
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