Cyclodextrin refining process
US5393880A · kind A · utility
27Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1993 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Jun 17, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B37/0012
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cyclodextrin is refined by performing a crystallization step in the presence of a hydrogen bond inhibitor. The hydrogen bond inhibitor includes a base in an amount to adjust the pH of the solution to 8 and above or a non-base such as urea, guanidium hydrochloride and sodium lauryl sulfate in an amount of 0.1% to 2%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.