Method for preparing precipitated silicas containing aluminium
US9334169B2 · kind B2 · utility
4Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Mar 25, 2011 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Dec 19, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/193
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for preparing precipitated silicas is described. A precipitation reaction between a silicate and an acidifying agent is also described, wherein a precipitated silica suspension is produced, and, subsequently, separation and drying of the suspension is conducted, in which, inter alia, one of the following three operations (a, b or c) is performed: (a) simultaneously adding a compound of aluminium and a basic agent, (b) simultaneously adding a silicate and a compound of aluminium, (c) simultaneously adding the acidifying agent, a silicate and a compound of aluminium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.