Linear block polymer comprising urea and urethane groups, method for the production of linear block polymers and use of the block polymers as implants
US6210441A · kind A · utility
34Cited by
2References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Oct 5, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/4277
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Linear block polymer having a molecular weight of at least 10.sup.4 Dalton, comprising urea and urethane groups and ester groups at such a distance from each other that after hydrolysis of these ester groups fragments are created which are so small that they are biologically degradable and can be excreted from a human body and further including an end group selected from primary NH.sub.2 and OH groups, which can be substituted by a monoamine. The polymers are intended to be used as implants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.