Polyesters
US5849859A · kind A · utility
153Cited by
5References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/0208
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A biodegradable and biocompatible polyester comprising (C.sub.3-10) alkylene carbonic acid ester units, each alkylene group being a C.sub.3 -alkylene group having 1 oxy substituent or a (C.sub.4-10) alkylene group having 2-8 oxy substituents, each of the oxy substituents occurring individually as a hydroxyl group or as a derivatized hydroxyl group comprising an ester or an ortho ester or an acetal residue. The polyesters may be used as matrices for the sustained release of pharmacologically active compounds, e.g. peptides or proteins, in the form of microparticles or implants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.