Process for the production of a bituminous composition
US8304475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Apr 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/0075
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the production of a bituminous composition, includes (i) producing a mix of aggregates with a maximum diameter less than or equal to 30 mm and of an amount less than or equal to 0.8 g per square meter of specific surface developed by the aggregates of at least one cationic polymer in the liquid form having a density of cationic charges greater than or equal to 0.5 meq/g and an intrinsic viscosity of from 0.01 to 0.8 dl/g; and (ii) putting the mix obtained in stage (i) into contact with at least one bituminous binder. A bituminous composition includes at least one specific cationic polymer and the use of at least one specific cationic polymer in the surface treatment of aggregates intended for the preparation of a bituminous composition are the other two subject-matters of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.