Robust sunscreen compositions
US10617627B2 · kind B2 · utility
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2References
8Claims
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Key dates
| Filing date | Feb 25, 2016 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Feb 25, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/594
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A robust sunscreen composition is disclosed herein comprising a water soluble polymer and a water insoluble film former providing a synergistic effect in SPF retention and critical wavelength after immersion in water, salt water, and chlorinated water. The water soluble polymer comprises poloxamer 338 (and) PPG-12/SMDI copolymer, poloxamer 407 (and) PPG-12/SMDI copolymer, or a combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.