Polyoxypropylene/polyoxyethylene copolymers with improved biological activity
US5696298A · kind A · utility
60Cited by
53References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1995 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Jun 2, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2624
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention comprises novel preparations of polyoxypropylene/polyoxyethylene copolymers which retain the therapeutic activity of the commercial preparations, but are substantially free from the undesirable effects which are inherent in the prior art preparations. Because the preparations of polyoxypropylene/polyoxyethylene copolymers which comprise the present invention are a less polydisperse population of molecules than the prior art polyoxypropylene/polyoxyethylene copolymers, the biological activity of the copolymers is better defined and more predictable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.