N-O-carboxymethylchitosonium carboxylate salts
US5412084A · kind A · utility
3Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Jan 26, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q17/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
New derivatives of carboxymethyl chitosan are disclosed, which are designated as N,O-Carboxymethylchitosonium carboxylates. The derivatives are ammonium salts made by acidifying a substantially neutral suspension of solid N,O-carboxymethyl chitosan in a diluent with an aqueous solution of the carboxylic acid. The carboxylic acid substitutes on the primary amine sites of the N,O-carboxymethyl chitosan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.