Polymers of citric acid and diamines, a process for their preparation and their uses, in particular as carriers of drugs
US5026821A · kind A · utility
15Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1989 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L31/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides polyamides produced by the condensation of diamines with citric acid through the carboxyl groups attached to the carbon atoms in positions 1 and 3. These polyamides can be used for the preparation of controlled-release forms of drugs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.