Inorganic powder composite, method for producing same, water-in-oil emulsion composition, and sunscreen cosmetic
US12156924B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Oct 18, 2019 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Nov 1, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/805
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Provided is an inorganic powder composite used for a water-in-oil type fine dispersion system which is excellent in emulsification and emulsification stability. The inorganic powder composite includes: an inorganic powder; and a first hydrophobic treatment agent, a second hydrophobic treatment agent, and a hydrophilic treatment agent, which cover at least one part of a surface of the inorganic powder, the first hydrophobic treatment agent is a silicon compound, the second hydrophobic treatment agent is a fatty acid, and the hydrophilic treatment agent is hydrous silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.