Process for preparation of water-free oxychloride material
US4462970A · kind A · utility
21Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1983 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Apr 4, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C1/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The specification discloses a process for forming a water-free rare earth oxychloride powder by exposing a water-containing rare earth oxide powder to a reactive atmosphere of chlorine and oxygen at 1000.degree. C. for 24 hours to remove water impurities from the oxide powder and to simultaneously convert the oxide powder to the oxychloride powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.