Photostable compositions comprising para-alkoxyl phenyl substituted propenoic acid (APP) copolymer derivatives
US10556981B2 · kind B2 · utility
1Cited by
0References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Sep 10, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates, according to some embodiments, to photostable photoactive compositions comprising (a) at least one photoactive compound that develops within itself an excited state energy when subjected to UV radiation and (b) a block copolymer comprising a plurality of blocks, wherein the block copolymer is operable to quench the excited state energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.