Method for preparing a hydraulic composition
US8425680B2 · kind B2 · utility
6Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2012 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Aug 2, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2201/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In one embodiment, the present invention includes a method for preparing a hydraulic composition including sand in which clay is present, the method including adding to the sand and clay a cationic polymer having a density of cationic charges which is greater than 0.5 meq/g and an intrinsic viscosity which is less than 1 dl/g, said cationic polymer being present in an amount of from 2-20% by weight based on the amount of clay present, said clay present in an amount of from 0.5-5% by weight of the sand present, and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.