US 10,808,125 B1Granted

Bitumen composition comprising a wax mixture consisting of a petroleum slack wax and a Fischer-Tropsch wax, the use of the wax mixture in bitumen compositions, the use of the bitumen composition in asphalt compositions, asphalt compositions comprising the bitumen composition and the method of producing asphalt pavements thereof

AssigneeSasol Wax GmbH

InventorsThorsten Butz, Carsten Oelkers, Stefan Strydom, William Honiball

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Abstract

The present invention relates to a bitumen composition comprising a petroleum slack wax and a Fischer-Tropsch wax, the use of the waxes in bitumen compositions, the use of the bitumen composition in asphalt compositions, asphalt compositions comprising the bitumen composition and a method for producing asphalt pavements and constructions thereof. The bitumen has proved to have better processing characteristics.

Claims15

Dependent claims

A bitumen composition comprising a majority amount of bitumen, and a minority amount of at least one wax mixture consisting of

20 to 80 wt.-% of a petroleum slack wax (PSW), and
20 to 80 wt.-% of a Fischer-Tropsch wax (FTW),
each relative to the total mass of the at least one wax mixture.

Dependencies are inferred from the claim text.

Facts

Application: 16/304,814Filed 26 May 2017
Priority: EP 1617182227 May 2016
Published: US 2020/0317924 A18 Oct 2020
Granted: 20 Oct 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C08L 91/08
Waxes: mineral waxes
C04B 24/36
Macromolecular compounds: bituminous materials, e.g. tar, pitch
C08L 95/00
Compositions of bituminous materials
E01C 9/001
Special pavings ; Pavings for special parts of roads or airfields: paving elements formed in situ; Permanent shutterings therefor ; Inlays or…