Polymeric active methylene compounds, their preparation and their use in azo polymers
US4526933A · kind A · utility
3Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1984 |
| Grant date | Jul 2, 1985 |
| Priority date | — |
| Expiry date | Feb 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer compounds which have recurring ##STR1## units are disclosed. These polymers provide active methylene groups which serve as points of attachment for organic groups--particularly azo functionality-containing groups. These azo links can be cleaved by bacteria in the mammalian lower bowel, thereby releasing the corresponding amino groups. This mechanism can effect programmed delivery of pharmaceutically desirable species to the lower bowel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.