Process for producing rutile TiO.sub.2
US4214913A · kind A · utility
12Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing rutile TiO.sub.2 by a process comprising oxidizing with oxygen or an oxygen containing gas, a mixture TiCl.sub.4 and AlCl.sub.3 and after at least 80% of the TiCl.sub.4 has been converted to TiO.sub.2 adding sufficient PCl.sub.3 to form from 0.1-0.5% P.sub.2 O.sub.5 in the TiO.sub.2, the amount of AlCl.sub.3 being sufficient to form 0.1-1.5% Al.sub.2 O.sub.3 in the TiO.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.