Processes for the manufacturing of precipitated silica
US4243428A · kind A · utility
16Cited by
2References
6Claims
0Family size
Inventors
Key dates
| Filing date | Jan 24, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jan 24, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for the manufacturing of silicas having a specific surface area ranging between 100 and 600 sq m/g, which does not vary upon drying, due to the action of a strong acid on an alkaline silicate, characterized by the fact that the addition of strong acid to the alkaline silicate is interrupted one to three times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.