Production of aluminum compound
US5445807A · kind A · utility
21Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1990 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Jan 9, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of manufacture including bringing seed and aluminum hydroxide together in an aqueous medium and hydrothermally digesting for producing boehmite at the expense of the aluminum hydroxide is described. Also disclosed is a process for forming a ceramic body from colloidal boehmite and alpha alumina. Alpha alumina is added to ultimately produce a seeded gel containing microcrystalline boehmite, the seeded gel capable of being sintered at a low temperature to produce a ceramic product. The colloidal boehmite may be purified by ion exchange to remove alkali metal ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.