METHOD FOR PRODUCING OILY DISPERSION, AND COSMETIC MATERIAL HAVING SAID OILY DISPERSION BLENDED THEREIN

WIPO Patent Application WO/2024/095598

A1

The present invention addresses the problem of providing: a method for producing an oily dispersion having excellent dispersibility of an inorganic oxide powder without treating the surface of the inorganic oxide powder in advance to increase the dispersibility in an oil agent; and a cosmetic material having said oily dispersion blended therein. The inorganic oxide powder, which easily aggregates, is characterized in having high dispersibility in an oil agent. Also, the oily dispersion provides the cosmetic material with good dispersion stability.　The method for producing an oily dispersion produces an oily dispersion containing an inorganic oxide powder and an ester oil of a C8-22 fatty acid, the method comprising: a step (1) for adding the inorganic oxide power to the ester oil while heating the ester oil at a temperature of 70-120°C; and a step (2) for further mixing, at a temperature of 70-120°C, the dispersed product to which the entire amount of the inorganic oxide powder has been added.

NAGATANI NOBORU (JP)
NAKAMURA SHOHEI (JP)
NAKANO JUNYA (JP)
QIN MENG (JP)

PCT/JP2023/032178

May 10, 2024

September 04, 2023

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NIKKO CHEMICALS (JP)

A61Q1/00; A61K8/19; A61K8/27; A61K8/29; A61K8/37; A61K8/92; A61Q17/04; A61Q19/00; B01J13/00

WO2019225491A1	2019-11-28
WO2011007668A1	2011-01-20

CN105331200A	2016-02-17
JP2013121940A	2013-06-20
JP2018016576A	2018-02-01
CN108272648A	2018-07-13
JPS647941A	1989-01-11

IBC (JP)

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