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Title:
SURFACE-TREATED METAL OXIDE PARTICLES, DISPERSION LIQUID, COSMETIC PREPARATION AND METHOD FOR PRODUCING SURFACE-TREATED METAL OXIDE PARTICLES
Document Type and Number:
WIPO Patent Application WO/2021/200541
Kind Code:
A1
Abstract:
Surface-treated metal oxide particles according to the present invention are metal oxide particles that are surface treated with a silane coupling agent which has an alkoxy group. The surface-treated metal oxide particles have ultraviolet shielding properties; the loss on drying at 105°C for 3 hours of the surface-treated metal oxide particles is 0.5% by mass or less; a peak associated with the alkoxy group is not detected in the reflectance spectrum of the surface-treated metal oxide particles in the range of from 900 cm-1 to 1,300 cm-1 as determined by means of a Fourier transform infrared spectrophotometer; and the value obtained by dividing the dry particle diameter D98 (μm) by the BET equivalent particle diameter (nm), namely (D98)/(BET equivalent particle diameter) is from 0.01 to 5.0.

Inventors:
NEYA TADASHI (JP)
MATSUSHITA HIROKAZU (JP)
Application Number:
PCT/JP2021/012548
Publication Date:
October 07, 2021
Filing Date:
March 25, 2021
Export Citation:
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Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
C01G9/02; A61K8/27; A61Q17/00; A61Q17/04; C09C1/00; C09C3/08; C09C3/12
Foreign References:
JP2000319128A2000-11-21
JP2010241732A2010-10-28
JP2002212462A2002-07-31
JP2007051188A2007-03-01
JP2008303231A2008-12-18
JP2007045859A2007-02-22
CN102492173A2012-06-13
JP2020061760A2020-04-16
JP2020062422A2020-04-23
JP2002362925A2002-12-18
JP2001181136A2001-07-03
Other References:
"Identification method by spectrum of organic compound"
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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