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1. (WO2018221406) HOLLOW PARTICLES AND COSMETIC

Pub. No.:    WO/2018/221406    International Application No.:    PCT/JP2018/020149
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat May 26 01:59:59 CEST 2018
IPC: C01B 33/18
A61K 8/25
A61Q 1/12
Applicants: JGC CATALYSTS AND CHEMICALS LTD.
日揮触媒化成株式会社
Inventors: WATANABE Satoshi
渡邊 慧
ENOMOTO Naoyuki
榎本 直幸
SHIMAZAKI Ikuko
嶋崎 郁子
SUEMITSU Kenichi
末光 建一
Title: HOLLOW PARTICLES AND COSMETIC
Abstract:
The hollow particles according to the present invention have a balloon structure having a cavity inside an outer shell thereof, and have protruding portions each having a size of 3-100 nm on the surface thereof. Further, the particles have a true specific gravity of 0.3-3.0 g/cm3 and a specific surface area per unit volume (m2/cm3) of not less than 0.5 but less than 60 as measured by BET. The particles have an average particle size (d1) within the range of 1-20 μm. Cosmetics containing the hollow particles have soft tactile characteristics similar to those of plastic beads.