Aqueous composition containing nonionic lipid vesicles and at least one uncoated pigment dispersed in an aqueous phase, process for preparation and use thereof
US5972378A · kind A · utility
1Cited by
8References
38Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 3, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jan 3, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/43
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions comprising an aqueous dispersion of lipid vesicles having an aqueous core, wherein the dispersion comprises at least one uncoated pigment dispersed in the aqueous phase and wherein the lipid vesicles with an aqueous core and a lipid membrane formed from at least one fatty acid ester, these compositions being stable, of homogeneous color and containing no or virtually no lumps of pigment, and a process for dispersing a filler in an oil-in-water dispersion of lipid vesicles by means of a high-pressure homogenizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.