Process for preparing active oxide powders
US4140771A · kind A · utility
11Cited by
2References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 24, 1978 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Feb 24, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved process for preparing active oxide powders in which cation hydroxide gels, prepared in the conventional manner are chemically dried by alternately washing the gels with a liquid organic compound having polar characteristics and a liquid organic compound having nonpolar characteristics until the mechanical water is removed from the gel. The water-free cation hydroxide is then contacted with a final liquid organic wash to remove the previous organic wash and speed drying. The dried hydroxide treated in the conventional manner will form a highly sinterable active oxide powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.