Rejuvenating compositions for asphalt applications and methods of manufacturing the same

Patent metadata

Field	Value
Publication number	US-12264247-B2
Application number	US-202318467991-A
Country	US
Kind code	B2
Filing date	Sep 15, 2023
Priority date	Feb 27, 2015
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

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 material oil crosslinked with a sulfur containing material, 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; and an unmodified biorenewable oil.

2. The composition of claim 1 , wherein the unmodified biorenewable oil comprises an animal-based oil, a plant-based oil, or mixtures thereof.

3. The composition of claim 1 , wherein the unmodified biorenewable oil comprises palm oil, sunflower oil, corn oil, soybean oil, canola oil, rapeseed oil, linseed oil, tung oil, castor oil, tall oil, cottonseed oil, peanut oil, safflower oil, corn stillage oil, lecithin (phospholipids) and combinations and crude streams thereof.

4. The composition of claim 3 , wherein the sulfur containing material comprises elemental sulfur.

5. The composition of claim 1 , the composition further comprising a soy methyl ester.

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

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

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

9. The composition of claim 8 , further comprising asphalt.

10. The composition of claim 8 , further comprising recycled asphalt.

11. The composition of claim 8 , further comprising thermoplastic elastomeric and plastomeric polymers, polyphosphoric acid, anti-stripping additives, warm mix additives, emulsifiers and/or fibers.

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

13. The method of claim 12 , wherein the composition further comprises recycled asphalt.

14. The method of claim 12 , wherein the composition is an emulsion.

15. A method comprising applying the composition of claim 1 to treat RAS or RAP and further mixing the treated RAS or RAP with virgin asphalt thereby obtaining a rejuvenated asphalt blend.

Assignees

• Cargill Inc

Inventors

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

Classifications

• G01N25/4866

  by using a differential method · CPC title

• C08L2205/08

  containing additives to improve the compatibility between two polymers · CPC title

• C08H3/00 Primary

  Vulcanised oils, e.g. factice · CPC title

• C09D7/65

  macromolecular (C09D7/41-C09D7/48 take precedence) · CPC title

• E01C11/005

  Methods or materials for repairing pavings (E01C7/35 takes precedence; for concrete coverings E01C7/147; for bituminous coverings E01C7/187; devices for repair works E01C23/06; repairing bridge floorings E01D22/00) · CPC title