Polyanhydrides of oligomerized unsaturated aliphatic acids
US5171812A · kind A · utility
32Cited by
6References
13Claims
0Family size
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Key dates
| Filing date | Jan 19, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jan 19, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/802
- 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.