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Porous silica particle, method for producing the same, and cosmetic containing the same
专利权人:
发明人:
Naoyuki Enomoto,Satoshi Watanabe,Yasutaka Miyoshi
申请号:
US15318431
公开号:
US09808407B2
申请日:
2015.06.30
申请国别(地区):
US
年份:
2017
代理人:
摘要:
An object of the present invention is to provide a porous silica particle with the small specific surface area and the large pore volume, a method for producing the same, and a cosmetic containing the porous silica particle with such characteristics as the texture improver. The porous silica particle according to the present invention has a structure sparsely packed with silica microparticles. The mean particle diameter is 0.5 to 25 μm, the specific surface area measured by the BET method is 5 to 60 m2/cm3, and the pore volume is 0.35 to 2.0 ml/g. In the pore size distribution of the porous silica particles (X axis: pore diameter, Y axis: value obtained by differentiating the pore volume by the pore diameter), the most frequent pore diameter (Dm) satisfies 100
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