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SILICON OXIDE-COATED ZINC OXIDE AND METHOD FOR PREPARING SAME, COMPOSITION CONTAINING SILICON OXIDE-COATED ZINC OXIDE, AND COSMETIC MATERIAL
专利权人:
LTD.;SUMITOMO OSAKA CEMENT CO.
发明人:
Syunsuke SUMA,Tetsuro ITAGAKI,Hirokazu MATSUSHITA
申请号:
US15525536
公开号:
US20180289600A1
申请日:
2015.11.11
申请国别(地区):
US
年份:
2018
代理人:
摘要:
The present invention provides silicon oxide-coated zinc oxide in which, in a silica coating formed of a silicate alkali metal salt, the elution of zinc ions is suppressed, a method for preparing the same, a composition containing silicon oxide-coated zinc oxide, and a cosmetic material. The silicon oxide-coated zinc oxide of the present invention is silicon oxide-coated zinc oxide formed by coating surfaces of zinc oxide particles with a silicon oxide coating, in which an average primary particle diameter of the zinc oxide particles is more than 50 nm and 500 nm or less, and when held in a buffer solution having a pH of 5 for 1 hour, an elution ratio S of the zinc oxide defined by following Expression (1) is 50% or less.Elution ratio S=(amount of eluted zinc oxide)/(amount of zinc oxide in silicon oxide-coated zinc oxide)   (1)
来源网站:
中国工程科技知识中心
来源网址:
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