Polyacetal hydrogels formed from divinyl ethers and polyols
US4713441A · kind A · utility
33Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1986 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water soluble polyacetals having molecular weights from about 5,000-30,000 are formed by condensing three monomers, e.g. a divinyl ether, a water soluble glycol and a diol. The invention is used for the bioerodible controlled release of therapeutic agents from the polyacetal hydrogel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.