Aqueous suspension of silica and of aluminium sulphate or of alum, processes for the preparation and uses of the said suspension
US6136867A · kind A · utility
9Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1996 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Apr 3, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/76
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to aqueous suspensions of precipitated silica and of aluminum sulphate which have a pH lower than 4 and a solids content of between 10 and 50% by weight and which, after a period at rest of 48 hours, are in the form of a gel. The gel is reversible under low shear. The invention also relates to processes for the preparation of these suspensions and to their uses, especially in the field of cement mixes, mortars and concretes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.