Chitosan derivative, sequestering agents for heavy metals
US4031025A · kind A · utility
25Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1976 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Jan 14, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Chitosan derivatives formed by acylation of chitosan with a saturated or unsaturated organic diacid anhydride are employed as a skin moisturizing agent in a cosmetic composition comprising an aqueous solution containing 0.1-20 percent by weight of said chitosan derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.