Method for providing dibenzoylmethane derivatives with light stability
US6569409B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Mar 23, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q17/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns novel light-stable filtering cosmetic compositions for topically protecting the skin and/or the hair against ultraviolet radiation, in particular solar radiation, comprising in a cosmetically acceptable support, at least a dibenzoylmethane derivative and at least an oily phase, and an efficient amount of at least a thickening copolymer including at least a hydrophobic unit in sufficient amount for it to be partially or completely soluble in the oily phase and at least a hydrophilic unit in sufficient amount for thickening the oily phase as stabilizing agent for the filter. The invention also concerns the corresponding method for providing dibenzoylmethane with light stability and the use of the compositions for skin and hair protection against the effects of ultraviolet radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.