Process for the production of aluminum chlorohydroxides having a controlled chlorine content
US3989805A · kind A · utility
7Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1973 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | Feb 28, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F7/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is described whereby aluminum chlorohydroxide having a controlled chlorine content is prepared by subjecting a mineral containing aluminum oxide or hydroxide (e.g. bayerite, gibbsite, diaspore, boehmite or alumina bayer) is subjected to a preliminary etching with hydrochloric acid at a temperature in the range from 110.degree. to 150.degree. C, the solution so obtained is neutralized with ammonia and the desired aluminum chlorohydroxide (e.g. Al.sub.2 (OH).sub.5 Cl) is crystallized out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.