Modified lecithin for asphalt applications

Patent metadata

Field	Value
Publication number	US-11820786-B2
Application number	US-202217664980-A
Country	US
Kind code	B2
Filing date	May 25, 2022
Priority date	May 20, 2015
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

Embodiments of the present invention provide a method, comprising obtaining a lecithin-containing material, in some aspects derived from a crude refining stream, comprising 20-80 wt % acetone insoluble matter, 1-30 wt % free fatty acid, and less than 10 wt % water, adding a fatty acid or carboxylic source to the lecithin-containing material to obtain a lecithin fatty acid blend or lecithin carboxylic acid blend and incorporating the blend into asphalt or oil field applications.

First claim

We claim:

1. A method, comprising:
(a) obtaining a lecithin-containing material, comprising 20-80 wt % acetone insoluble matter, 1-30 wt % free fatty acid, and less than 10 wt % water;
(b) adding a fatty acid source to the lecithin-containing material to obtain a lecithin fatty acid blend; and
(c) incorporating the lecithin fatty acid blend into asphalt or oil field applications.

2. The method of claim 1 , wherein the lecithin-containing material comprises less than 5 wt % water.

3. The method of claim 1 , wherein the lecithin-containing material comprises less than 2 wt % water.

4. The method of claim 1 , wherein the lecithin-containing material comprises less than 1 wt % water.

5. The method of claim 1 , wherein the lecithin-containing material comprises 10-20 wt % free fatty acid.

6. The method of claim 1 , wherein the lecithin fatty acid blend has a Brookfield Viscosity at 25° C. of about 100 to 15000 cP.

7. The method of claim 1 , wherein the lecithin fatty acid blend has a Brookfield Viscosity at 25° C. of about 2000 to 12000 cP.

8. The method of claim 1 , wherein the lecithin fatty acid blend has a Brookfield Viscosity at 25° C. of about 5000 to 9000 cP.

9. The method of claim 1 , wherein the lecithin fatty acid blend has an acid value of 1 to 100 mg KOH/g.

10. The method of claim 1 , wherein the lecithin fatty acid blend has an acid value of 50 to 90 mg KOH/g.

11. The method of claim 1 , wherein the lecithin fatty acid blend has an acid value of 10 to 70 mg KOH/g.

12. The method of claim 1 , wherein the lecithin fatty acid blend has an acid value of 15 to 40 mg KOH/g.

13. The method of claim 1 , wherein the lecithin-containing material is derived from a crude refining stream.

14. The method of claim 13 , wherein the crude refining stream is a plant-based gum.

15. The method of claim 14 , wherein the plant-based gum is selected from the group consisting of corn gum, soybean gum, and canola gum.

16. The method of claim 13 , wherein the crude refining stream is soapstock.

17. The method of claim 13 , wherein the crude refining stream is derived from animal sources.

18. The method of claim 1 , wherein the fatty acid source is selected from the group consisting of deodorized distillate streams, vegetable oils, and recovered corn oil streams and derivatives thereof.

19. The method of claim 1 , wherein the asphalt is polyphosphoric acid modified asphalt.

20. The method of claim 1 , wherein the asphalt application is an anti-strip or a compaction aid additive.

Assignees

• Cargill Inc

Inventors

• Kurth Todd L
• Stauduhar Suzanne
• Tabatabaee Hassan Ali

Classifications

• C07F9/103 Primary

  Extraction or purification by physical or chemical treatment of natural phosphatides; Preparation of compositions containing phosphatides of unknown structure · CPC title

• C08L85/02

  containing phosphorus · CPC title

• C08L91/00 Primary

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

• C09K8/602

  containing surfactants · CPC title

• C11B13/02

  from soap stock · CPC title