Cosmetic and/or pharmaceutical composition containing a dispersion of lipid vesicles, process for the preparation of the said dispersion and dispersion of lipid vesicles
US5626868A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1995 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Feb 8, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition comprises in an aqueous dispersion phase, a dispersion of lipid vesicles that encapsulate an aqueous phase. The lipid vesicles are a lipid phase containing an ionic amphiphilic lipid or a nonionic amphiphilic lipid, or a mixture thereof, together with a compound having the formula ##STR1## wherein (a) W represents --CH.sub.2 OH, --COOM or --(CH.sub.2).sub.2 --COOM, wherein M represents H, alkali metal or alkaline earth metal and X, Y, Z and V, each independently, represent hydrogen or hydroxyl, with the proviso that when W represents --CH.sub.2 OH at least one of X, Y, Z or V represents hydroxyl, or (b) W represents --CH.sub.3 and X, Y, Z and V represent H or OH combined as shown in each line of the table below: ______________________________________ X Y Z V ______________________________________ OH OH OH OH OH H OH OH OH OH OH H H OH OH OH H OH OH H H H OH OH OH H OH H ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.