High solids aqueous silica dispersion
US4248600A · kind A · utility
4Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1978 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | May 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for increasing the bulk density of silica. Acid is added to an aqueous silica wet cake slurry to bring the pH to about 1.8 to 4.0, and dry fine particle silica is added with an agitator rpm of at least 2000 rpm. The acid and silica are alternately added until a homogeneous consistency is obtained with a solids concentration of above 30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.