logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12600671 B1

PDFFull Text
Date of Patent:
Apr. 14, 2026

Filed:

Aug. 27, 2020

Process for preparing foamed polymer-modified bitumen compositions

Applicant:

Basf SE, Ludwigshafen am Rhein, DE;

Inventors:

Timo Mangel, Ludwigshafen am Rhein, DE;

Maik Schacht, Neustadt an der Weinstrasse, DE;

Michael Dietzsch, Ludwigshafen am Rhein, DE;

Frank Wagner, Wittlich, DE;

Uwe Vagt, Ludwigshafen, DE;

Susanne Schneider, Trostberg, DE;

Carmen-Elena Cimpeanu, Ludwigshafen am Rhein, DE;

Ekkehard Jahns, Ludwigshafen am Rhein, DE;

Sophie Putzien, Trostberg, DE;

Assignee:

BASF SE, Ludwigshafen am Rhein, DE;

Attorney:

Faegre Drinker Biddle & Reath LLP

Primary Examiner:

Stephen E Rieth

Int. Cl.
CPC ...
C04B 26/26 (2006.01); C04B 24/26 (2006.01); C04B 38/10 (2006.01); C04B 111/00 (2006.01); C08J 9/12 (2006.01); C08L 95/00 (2006.01);
U.S. Cl.
CPC ...
C04B 26/26 (2013.01); C04B 24/2676 (2013.01); C04B 38/10 (2013.01); C08J 9/125 (2013.01); C08L 95/00 (2013.01); C04B 2111/0075 (2013.01); C08J 2203/10 (2013.01); C08J 2395/00 (2013.01); C08J 2425/10 (2013.01);
Abstract

The invention relates to a process for preparing foamed polymer-modified bitumen compositions and to the use thereof for the production of asphalt. The invention also relates to foamed polymer-modified bitumen compositions obtainable by this process. Furthermore, the invention relates to a process for producing an asphalt composition and to the use thereof in road applications. The process for the preparation of the foamed polymer-modified bitumen composition comprises the following steps: i) Heating and pressurizing a bitumen to obtain a hot flowing bitumen stream, ii) Injecting under pressure an aqueous polymer dispersion into the hot flowing bitumen stream obtained in step i), to obtain a pressurized flowing mixed stream of the bitumen and the aqueous polymer dispersion; iii) Expanding the flowing mixed stream, in particular to atmospheric pressure, such that the water contained in the aqueous polymer dispersion vaporizes and foams the mixed stream to obtain a foamed polymer-modified bitumen.

Find Patent Forward Citations

Loading…