Asphalt composition comprising thermosetting reactive compounds

Patent metadata

Field	Value
Publication number	US-2020199025-A1
Application number	US-201816621126-A
Country	US
Kind code	A1
Filing date	Jun 4, 2018
Priority date	Jun 14, 2017
Publication date	Jun 25, 2020
Grant date	—

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

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 . Use of the asphalt composition according to claim 1 for the preparation of an asphalt mix composition.

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

• 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

• 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