Sunscreen compositions containing an ultraviolet radiation-absorbing polymer
US9254254B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2013 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Oct 25, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/596
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions including a discontinuous oil phase homogeneously dispersed in a continuous water phase, the oil phase including a sunscreen agent that includes a linear, ultraviolet radiation absorbing polyether that comprises a chemically bound UV-chromophore; and an oil-in water emulsifier component including an anionic oil-in-water emulsifier and a nonionic oil-in-water emulsifier having an alcohol functional group, wherein the weight ratio of the anionic oil-in-water emulsifier to the nonionic oil-in-water emulsifier is about 12 or less and wherein the linear, ultraviolet radiation absorbing polyether is present in an amount effective to provide the composition with an SPF of about 10 or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.