Sunscreen compositions containing an ultraviolet radiation-absorbing polyester
US9592190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Mar 5, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q17/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions including an oil phase substantially homogeneously distributed in a continuous water phase, the oil phase including a sunscreen agent that includes a UV-absorbing polyester in an amount effective to provide the composition with an SPF of about 10 or greater and which is the polymerization reaction product of monomers including a UV-absorbing triazole, a diester, a diol and a tetrol polyol; an alkylated polyvinylpyrrolidone; and an emulsifier selected from anionic emulsifier and/or a non-ionic emulsifier, where the composition is substantially free of a non-polymeric UV-absorbing sunscreen agent and has an SPF of less than 2 in the absence of the UV-absorbing polyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.