Method for enriching optical isomers by means of simulated mobile bed
US6409923B1 · kind B1 · utility
18Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Sep 19, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B57/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a method for separating from a mixture two optical isomers using a simulated moving bed including an assembly of columns divided into at least three successive zones. The amount of charge injected is greater than that of the state of a predetermined reference state. The discharge flow is greater than that of the predetermined reference state if it is required at least to preserve the purity of the less immobilized enantiomer. The discharge flow is less than that of the reference state if it is required to preserve the purity of the more immobilized enantiomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.