Method for incorporating active agents into a hydrophilic polymer foam
US10245230B2 · kind B2 · utility
0Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Jul 12, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention consists of a novel process for the incorporation of one or more water-soluble active agents in a hydrophilic polymer foam. Said process makes it possible in particular to obtain a hydrophilic polyurethane foam exhibiting a gradient of active agents. This process is of particular use when manufacturing hydrophilic polyurethane foams intended for medical, cosmetic and dermocosmetic purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.