Asphalt composition comprising thermosetting reactive compounds

Patent metadata

Field	Value
Publication number	US-11059749-B2
Application number	US-201816621126-A
Country	US
Kind code	B2
Filing date	Jun 4, 2018
Priority date	Jun 14, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

An asphalt composition comprising 0.1 to 10.0 wt.-% based on the total weight of the composition of a thermosetting reactive compound selected from the group consisting of polymeric MDI, epoxy resins and melamine formaldehyde resins, wherein at least 18% by weight based on the total weight of the composition are particles with a sedimentation coefficient above 5000 Sved in a white spirit solvent.

First claim

The invention claimed is:

1. An asphalt composition comprising 0.1 to 10.0 wt.-% based on the total weight of the composition of a thermosetting reactive compound selected from the group consisting of polymeric MDI, epoxy resins and melamine formaldehyde resins, wherein at least 18% by weight based on the total weight of the composition are particles with a sedimentation coefficient above 5000 Sved in a white spirit solvent.

2. The asphalt composition according to claim 1 , wherein above 20% by weight based on the total weight of the composition are particles with a sedimentation coefficient in a range of from 10000 to 1000000 Sved in a white spirit solvent.

3. The asphalt composition according to claim 1 , wherein the thermosetting reactive compound is polymeric MDI and the polymeric MDI has a functionality of at least 2.5.

4. The asphalt composition according to claim 1 , wherein the amount of polymeric MDI is of from 0.5 to 2.0 wt.-% based on the total weight of the composition.

5. The asphalt composition according to claim 1 , wherein the amount of polymeric MDI is of from 2.0 to 5.0 wt.-% based on the total weight of the composition.

6. The asphalt composition according to claim 1 , wherein the polymeric MDI has a functionality of at least 2.7.

7. The asphalt composition according to claim 1 , wherein the polymeric MDI has iron content in the range of from 1 to 80 ppm.

8. A process for the preparation of the asphalt composition according to claim 1 comprising the following steps:
a) Heating up the starting asphalt to a temperature of from 110 to 190° C.
b) Adding the desired amount of thermosetting reactive compound under stirring
c) After step b) the reaction mixture is stirred at a temperature in the range of from 110 to 190° C. for at least 2.5 h
wherein the reaction is under an oxygen atmosphere.

9. The process according to claim 8 , wherein the temperature is in the range of from 110 to 150° C.

10. The process according to claim 8 , wherein the temperature in step a) and step c) are the same and in the range of from 110 to 150° C.

11. The process according to claim 8 , wherein the temperature is in the range of from 110 to 150° C. and the reaction mixture is stirred for at least 4 h after the addition step b).

12. The process according to claim 8 wherein the end of the reaction is determined by IR spectroscopy.

13. An asphalt mix composition which comprise the asphalt composition according to claim 1 and stone.

14. A process for the preparation of an asphalt mix composition which comprises mixing the asphalt composition according to claim 1 with stone.

Assignees

• Basf Se

Inventors

• Fleischel Olivier
• Otero Martinez Iran
• Schatz Waldemar
• Wiebelhaus Dag
• Eling Berend
• Scherzer Dietrich
• Ferbitz Jens
• Praw Michael
• Malonson Bernie Lewis
• Taylor Ryan E

Classifications

• C08L95/00 Primary

  Compositions of bituminous materials, e.g. asphalt, tar, pitch · CPC title

• C04B2103/0067

  the ingredients being formed in situ by chemical reactions or conversion of one or more of the compounds of the composition · CPC title

• C08L63/00

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title

• C08K5/29

  Compounds containing {one or more} carbon-to-nitrogen double bonds · CPC title

• C08L61/28

  with melamine · CPC title