Title:
SURFACE-MODIFIED ZINC OXIDE PARTICLES, DISPERSION LIQUID AND COSMETIC PREPARATION
Document Type and Number:
WIPO Patent Application WO/2023/190487
Kind Code:
A1
Abstract:
Surface-modified zinc oxide particles according to the present invention are obtained by treating the particle surfaces of zinc oxide particles with a hydrolyzable surface treatment agent; and the surface-modified zinc oxide particles have a color difference ∆E of 4.0 or less between before and after irradiation of simulated sunlight, while having a cyclopentasiloxane oil absorption of 20 mL/100 g or less.
Inventors:
SUMA SYUNSUKE (JP)
Application Number:
PCT/JP2023/012452
Publication Date:
October 05, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
A61K8/27; C01G9/02; A61Q17/04; C09C1/04; C09C3/08; C09D17/00; C09K3/00
Domestic Patent References:
| WO2000042112A1 | 2000-07-20 | |||
| WO2018025610A1 | 2018-02-08 | |||
| WO2021220454A1 | 2021-11-04 | |||
| WO2022177004A1 | 2022-08-25 |
Foreign References:
| JPH11193354A | 1999-07-21 | |||
| JP2002087817A | 2002-03-27 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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