Alumina compounds in ion exchange resins
US4381349A · kind A · utility
32Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1979 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Nov 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Formation of hydrous alumina in the reticules of a weak-base anion exchange resin, wherein AlCl.sub.3 has been precipitated as hydrous alumina by reaction with ammonia, is improved by employing a subsequent treatment with HCl or with NH.sub.4 Cl and HCl to convert the exchange resin to the chloride form, thereby increasing the reticular volume of the resin, thus permitting subsequent precipitation of additional hydrous alumina therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.