Microcapsules with UV filter activity and process for producing them
US8765967B2 · kind B2 · utility
2Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2011 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Aug 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides a process for producing microcapsules with UV filter activity, wherein at least one type of crosslinkable chromophore with UV-A and/or UV-B and/or UV-C filter activity and optionally at least one type of crosslinkable monomer which does not have UV-A and/or UV-B and/or UV-C filter activity are subjected to a crosslinking reaction in the absence of non-crosslinkable chromophores with UV-A and/or UV-B and/or UV-C filter activity and microcapsules obtainable by this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.