UV-absorbing polymers and formulations thereof
US10407528B2 · kind B2 · utility
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7References
11Claims
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Key dates
| Filing date | Mar 19, 2018 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Mar 19, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
UV-absorbing polymers are provided that have at least one anhydride repeating unit that is covalently attached to at least one UV-absorbing moiety selected from the group consisting of functionalized dibenzoylmethanes, benzophenone sulfonamides, triphenyl triazines, and combinations thereof. Also provided are formulations comprising the UV-absorbing polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.