Polyanhydrides of oligomerized unsaturated aliphatic acids
US5270419A · kind A · utility
36Cited by
10References
27Claims
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Key dates
| Filing date | Sep 16, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Sep 16, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A polyanhydride suitable for use as a matrix material in controlled delivery devices polymerized from monomers of the general formula: ##STR1## wherein R, R', and R" are the same or a different aliphatic chain of C.sub.1 to C.sub.20 or hydrogen; m, n, and p are integers from 0 and 20; y is 0 or 1; and, if y is 0, one of R or R' is not H.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.