Block polymer having functional groups at both ends
US5929177A · kind A · utility
30Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Feb 5, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a block polymer which has functional groups on its both ends, and which comprises hydrophilic/hydrophobic segments. As for the functional groups on its both ends, the block polymer has amino group, carboxyl group or mercapto group on .alpha.-terminal, and hydroxyl group, carboxyl group, aldehyde group or vinyl group on .omega.-terminal. Hydrophilic segment comprises polyethylene oxide, while hydrophobic segment is derived from lactide, lactone or (meth)acrylic acid ester. The block polymer of this invention forms a polymeric micelle which is usable as bio-compatible materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.