Surfactant for water-in-oil emulsion
US11633333B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 11, 2019 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Jun 11, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/596
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a water-in-oil surfactant consisting of a mixture of compounds of formula (I): wherein the compound of formula (I) has an average degree of polymerisation n of between 4 and 6, R1, R2 and R3 being, independently of one another, a hydrogen atom or a group R4 derived from at least one carboxylic acid, the carboxylic acid being 12-hydroxystearic acid or a mixture of 12-hydroxystearic acid and ricinoleic acid. The present invention also relates to a surfactant composition and to a cosmetic composition comprising this surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.