Covalently bound, polysaccharide-based chiral stationary phases
US5811532A · kind A · utility
15Cited by
2References
26Claims
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Key dates
| Filing date | Jun 30, 1997 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B57/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There are described stable, non-leaching chiral stationary phases in which a chiral polysaccharide or polysaccharide derivative is covalently bound through a spacer to the surface hydroxyl groups of a refractory inorganic oxide. The spacer molecules are omega-isocyanatoalkylene silanes. Favored refractory inorganic oxides are alumina and silica gel. Cellulose esters and cellulose phenyl carbamates are among the most favored of the chiral polysaccharides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.