Rejuvenating compositions for asphalt applications and methods of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10329426-B2
Application number	US-201715715914-A
Country	US
Kind code	B2
Filing date	Sep 26, 2017
Priority date	Feb 27, 2015
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

Disclosed herein are rejuvenating compositions for asphalt applications. In one aspect, the rejuvenating composition comprises a polymerized oil having a polymeric distribution ranging from about 2 to about 80 wt % oligomer content and Hildebrand solubility ranging from about 6 to about 12. In another aspect, the rejuvenating composition comprises an oil having a Hildebrand solubility ranging from about 6 to about 12 and a flash point ranging from about 100° C. to about 400° C. In yet another aspect, the rejuvenating composition comprises a modified oil having a Hildebrand solubility ranging from about 6 to about 12 and a flash point ranging from about 100° C. to about 400° C.

First claim

The invention claimed is:

1. A rejuvenating composition for asphalt applications, comprising a polymerized oil comprising a starting oil material crosslinked with elemental sulfur, the polymerized oil having a polymeric distribution ranging from about 2 to about 80 wt % oligomer content and a Hildebrand solubility ranging from about 6 to about 12.

2. The composition of claim 1 , further comprising asphalt.

3. The composition of claim 1 , further comprising recycled asphalt.

4. The composition of claim 1 , further comprising a biorenewable oil or petroleum based oil.

5. The composition of claim 1 , further comprising a modified oil.

6. The composition of claim 1 , further comprising thermoplastic elastomeric and plastomeric polymers, polyphosphoric acid, anti-stripping additives, wan mix additives, emulsifiers and/or fibers.

7. The composition of claim 1 , wherein the crosslinking comprises heating to about 130° C. to about 250° C.

8. The composition of claim 1 , wherein the crosslinking comprises heating to about 130° C. to about 220° C.

9. The composition of claim 1 , wherein the crosslinking comprises heating to about 160° C. to about 200° C.

10. The composition of claim 1 , wherein the polymerized oil has a sulfur content of 0.01 wt % to 8 wt %.

11. The composition of claim 1 , wherein the composition is an emulsion.

12. The composition of claim 11 , further comprising asphalt.

13. The composition of claim 11 , further comprising recycled asphalt.

14. The composition of claim 11 , further comprising thermoplastic elastomeric and plastomeric polymers, polyphosphoric acid, anti-stripping additives, warm mix additives, emulsifiers and/or fibers.

15. A method comprising applying the composition of claim 11 to an existing pavement surface.

16. A method comprising applying the composition of claim 14 to treat RAS or RAP and further mixing the treated RAS or RAP with virgin asphalt thereby obtaining a rejuvenated asphalt blend.

17. A method comprising applying the composition of claim 1 to an existing pavement surface.

18. A method comprising applying the composition of claim 1 to treat RAS or RAP and further mixing the treated recycled asphalt shingles (RAS) or recycled asphalt pavement (RAP) with virgin asphalt thereby obtaining a rejuvenated asphalt blend.

19. A method comprising applying the composition of claim 1 as part of a cold patching material, a high performance cold patch or cold mix application that contains recycled asphalt thereby obtaining treated RAS or RAP.

20. A method comprising applying the composition of claim 1 to milled asphalt pavement for cold-in-place or hot-in-place recycling of the milled asphalt pavement.

Assignees

• Cargill Inc

Inventors

• Kurth Todd L
• Nivens Scott
• Stevermer Christopher Patrick
• Tabatabaee Hassan Ali

Classifications

• C08L99/00

  Compositions of natural macromolecular compounds or of derivatives thereof not provided for in groups C08L89/00 - C08L97/00 · CPC title

• C08L95/00

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

• C09F7/06

  by polymerisation · CPC title

• C09D191/02

  Vulcanised oils, e.g. factice · CPC title

• C09D195/00

  Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch · CPC title