Impurity inerting composition
US8834626B2 · kind B2 · utility
6Cited by
3References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2005 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Aug 17, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2201/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for inerting clays in sands which are intended for the preparation of hydraulic compositions, the method including a step of adding to the hydraulic composition, or to one of the constituents thereof, a composition which may include at least 50% by weight of a cationic polymer which has a density of cationic charges which is greater than 0.5 meq/g and an intrinsic viscosity which is less than 1 dl/g as an active substance. The hydraulic composition may be a concrete or a mortar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.