Process for extracting methylxanthines from aqueous solutions containing same
US4904773A · kind A · utility
3Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1987 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Mar 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methylxanthines such as caffeine are removed from aqueous solution by contact with cyclodextrin. A decaffeination process using selected cyclodextrin species is particularly disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.