Bituminous compositions comprising additives having improved thermoreversible properties
US10131788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2013 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The disclosure relates to a bituminous composition and to the method of preparation thereof. The bituminous composition includes a bitumen, a first additive including at least one fatty acid ester function, saturated or unsaturated, linear or branched, having a hydrocarbon chain with 4 to 36 carbon atoms, optionally substituted by at least one hydroxyl group and a second additive comprising at least one organogelator. The disclosure also relates to the use of a combination of the first and second additives in a bituminous composition, for lowering the dynamic viscosity of a bituminous composition or of a bitumen base at a temperature above or equal to 80° C., preferably above 80° C., without impairing the consistence of the composition at the temperatures of use. Finally, the disclosure relates to the use of these bituminous compositions in the fields of highway applications, in particular in the manufacture of highway binders, and in the fields of industrial applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.