Substituted derivatives of per (3,6-anhydro) cyclodextrins, their preparation process and their use for separating ions
US5792857A · kind A · utility
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19Claims
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Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B37/0012
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to substituted derivatives of per(3,6-anhydro)cyclodextrins, their preparation process and their use for the separation of ions. These derivatives comply with one of the formulas: ##STR1## in which the R.sup.1, which can be the same or different, represent H, a halogen, OH, OR.sub.2, OM, SH, SR.sup.2, OCOR.sup.2, NH.sub.2, NR.sup.2 R.sup.3, CONR.sup.2 R.sup.3, CONH.sub.2, CN, COOR.sup.2, COOH, OSO.sub.2 R.sup.2, N.sub.3 or R.sup.2, and n=5, 6 or 7, provided that all the R.sup.1 do not represent OH.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.