Self-emulsifying pigments
US7276113B2 · kind B2 · utility
0Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/84
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to a surface-modified pigment having at least two surface-active agents chemically immobilized onto the surface of the pigment. The first surface-active agent has an HLB of about 10 or more, the second surface-active agent has an HLB of 9 or less, and the difference in HLB between the first and second surface-active agents is at least about 5. The surface-modified pigments are self emulsifying and are applicable for use in water-based cosmetic systems and toiletry products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.