Rejuvenating compositions for asphalt applications and methods of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11898037-B2
Application number	US-201816227915-A
Country	US
Kind code	B2
Filing date	Dec 20, 2018
Priority date	Feb 27, 2015
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

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 elemental sulfur, the polymerized oil comprising a Hildebrand solubility ranging from about 6 to about 12 and a flash point ranging from about 100° C. to about 400° C., wherein the polymerized oil has a sulfur content of 0.01 wt % to 8.7 wt %, and all sulfur-containing crosslinks present in the polymerized oil are between molecules of the starting material oil.

2. The composition of claim 1 , wherein the starting material oil is a biorenewable oil comprising soybean oil, canola oil, rapeseed oil, castor oil, tall oil, sunflower oil, palm oil, peanut oil, safflower oil, corn oil, corn stillage oil, lecithin, an animal-based oil, or a combination thereof.

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

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

5. The composition of claim 1 , further comprising asphalt, recycled asphalt, or a combination thereof.

6. The composition of claim 1 , further comprising thermoplastic, elastomeric, or plastomeric polymers, polyphosphoric acid, anti-stripping additives, warm mix additives, emulsifiers, fibers, or a combination thereof.

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

8. The composition of claim 7 , further comprising asphalt, recycled asphalt, or a combination thereof.

9. The composition of claim 7 , further comprising thermoplastic, elastomeric, or plastomeric polymers, polyphosphoric acid, anti-stripping additives, warm mix additives, emulsifiers, fibers, or a combination thereof.

10. The composition of claim 1 , wherein the polymerized oil is achieved via a bodying reaction, a blowing reaction, or a reaction with a polyglycerol ester.

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

12. The composition of claim 1 , wherein the polymerized oil is a modified oil.

13. The composition of claim 1 , wherein the oil comprises a polymeric distribution ranging from about 2 to about 80 wt % oligomer content.

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

15. 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.

16. 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.

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

18. The composition of claim 1 , wherein the polymerized oil crosslinked with the sulfur-containing compound is a liquid at 40° C.

19. A rejuvenating composition for asphalt applications, comprising a polymerized oil comprising a starting material oil crosslinked with elemental sulfur, the polymerized oil comprising a Hildebrand solubility ranging from about 6 to about 12 and a flash point ranging from about 100° C. to about 400° C., wherein the polymerized oil has a sulfur content of 0.01 wt % to 8.7 wt %.

20. A rejuvenating composition for asphalt applications, comprising a polymerized oil comprising a starting material oil crosslinked with elemental sulfur, the polymerized oil comprising a Hildebrand solubility ranging from about 6 to about 12 and a flash point, ranging from about 100° C. to about 400° C. the polymerized oil having a sulfur content of 0.01 wt % to 8.7 wt %, wherein the starting material oil comprises a biorenewable, previously modified, or functionalized oil comprising soybean oil, canola oil, rapeseed oil, castor oil, tall oil, sunflower oil, palm oil, peanut oil, safflower oil, corn oil, corn stillage oil, lecithin, an animal-based oil, or a combination thereof.

Assignees

• Cargill Inc

Inventors

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

Classifications

• C08L91/00 Primary

  Compositions of oils, fats or waxes; Compositions of derivatives thereof · CPC title

• C08H3/00 Primary

  Vulcanised oils, e.g. factice · CPC title

• C08L91/02

  Vulcanised oils, e.g. factice · CPC title

• C08L95/00

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

• C08L95/005

  Aqueous compositions, e.g. emulsions · CPC title