Composition and association of sunscreens for photostabilizing butyl methoxydibenzoylmethane (BMDBM)
US9814660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Jan 30, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention concerns a composition containing a photostabilized combination of Butyl Methoxydibenzoylmethane (BMDBM), Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (BEMT), and Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (MBBT) wherein: (i)—the BEMT/BMDBM mass ratio is greater than or equal to 1 and preferably greater than or equal to 1.5; (ii)—the content of BMDBM is comprised between 1% and 5% by weight with regard to the total weight of the composition; (iii)—the quantity of MBBT is comprised between 3% and 7% by weight with regard to the total weight of the composition, said combination containing no octocrylene, PABA or ethylhexyl methoxycinnamate, and a pharmaceutically or cosmetically acceptable excipient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.