Emulsion composition
US8242169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Sep 5, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An emulsion composition of the present invention includes (A) a salt of a higher fatty acid ester of ascorbic acid-2-phosphoric acid ester, (B) a polyglycerin fatty acid monoester including polyglycerin having a mean polymerization degree of 8 to 12 and an unsaturated fatty acid residual group of 14 to 22 carbon atoms, (C) a polyglycerin fatty acid monoester comprising polyglycerin having a mean polymerization degree of 2 to 6 and an unsaturated fatty acid residual group of 14 to 22 carbon atoms, and (D) a hydrocarbon oil, wherein the blending ratio by mass between the component (B) and the component (C) is in the range of 1:1 to 3:1, and the blending ratio by mass between the total of the components (B) and (C) and the component (D) is in the range of 10:1 to 1:4. By the use of the emulsion composition of the present invention, a skin external preparation can be provided which is prevented from decrease of a salt of a higher fatty acid ester of ascorbic acid-2-phosphoric acid ester attributable to decomposition of the salt, is excellent in retention of moisture, and has a beautiful appearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.