Method for incorporating active agents into a hydrophilic polymer foam
US9757335B2 · kind B2 · utility
2Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Dec 17, 2033 |
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.