Stable emulsions of perfluoropolyethers and fat substances and process for preparing them
US5368847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1991 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Dec 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2371/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to stable emulsions of perfluoropolyethers having perfluoroalkyl end groups and of fat substances, consisting of: PA1 one or more perfluoropolyethers having perfluoroalkyl end groups: 1-50% by weight, PA1 one or more polyhydroxylated compounds selected from glycerol and polyalcohols other than glycerol and saccharides, containing at least three hydroxylic groups, said compounds being dissolved in water or in a hydrophilic solvent when they are solid: 10-95% by weight, including water and the hydrophilic solvent, if any, PA1 one or more fat substances having a melting temperature not higher than 100.degree. C.: 10-80% by weight, PA1 one or more emulsifiers: 0.1-10% by weight. These emulsions are utilized, in particular, in cosmetology and dermatology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.