Copolymer of lactone and carbonate and process for the preparation of such a copolymer
US5492997A · kind A · utility
6Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Jun 17, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L31/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A copolymer of a lactone and a polycyclic carbonate is prepared by heating a monomer of a lactone with a polycyclic carbonate having two cyclic structures including a carbonate group at elevated temperatures less than 200 degrees Centigrade in the presence of a catalyst. The described copolymers evidence excellent mechanical properties, good resorption velocity and do not disintegrate upon degradation into materials of high crystallinity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.