Lecithin drying using fatty acids

Patent metadata

Field	Value
Publication number	US-11713408-B2
Application number	US-202217804894-A
Country	US
Kind code	B2
Filing date	Jun 1, 2022
Priority date	Sep 29, 2014
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

Aspects of the present invention provide methods of drying lecithin in a batch reaction, comprising the steps of obtaining a lecithin-containing material (derived from a crude refining stream) comprising 15-50% water, 10-30% acetone insoluble matter, and 10-20% free fatty acid; adding a fatty acid source (also derived from a crude refining stream) to the lecithin-containing material composition to obtain a lecithin/fatty acid reaction mixture; and blowing dry gas through the gum/fatty acid reaction mixture to obtain a resultant dried lecithin fatty acid blend having a water content of less than 2%. The resultant dried lecithin fatty acid blend may be used in asphalt or oil field applications.

First claim

We claim:

1. A method of incorporating fatty acid lecithin blends in asphalt applications, comprising:
(a) obtaining a lecithin fatty acid blend, comprising:
i. less than 2 wt % water;
ii. between 5 and 75 wt % acetone insoluble matter; and
iii. between 25 and 95 wt % free fatty acid; and

(b) adding the lecithin fatty acid blend to aggregates to be used in asphalt pavements, wherein the amount of the lecithin fatty acid blend ranges from 0.25 to 3 wt % of the lecithin fatty acid blend/aggregate mixture.

2. The method of claim 1 , further comprising adding reclaimed asphalt pavement millings prior to or after step (b).

3. The method of claim 1 , wherein:
the lecithin fatty acid blend of (a) comprises:
-between 20 and 40 wt % acetone insoluble matter; and
-between 35 and 48 wt % free fatty acid.

4. A method of incorporating fatty acid lecithin blends in asphalt applications, comprising:
a. obtaining a lecithin fatty acid blend, comprising:
i. less than 2 wt % water;
ii. between 5 and 75 wt % acetone insoluble matter; and
iii. between 25 and 95 wt % free fatty acid; and

b. adding the lecithin fatty acid blend to an asphalt binder; wherein the amount of the lecithin fatty acid blend ranges from 0.05 to 10 wt % of the lecithin fatty acid blend/asphalt binder mixture.

5. The method of claim 4 , wherein the lecithin fatty acid blend acts as a compaction aid additive.

6. The method of claim 4 , wherein the lecithin fatty acid blend of (a) comprises between 35 and 48 wt % free fatty acid.

7. The method of claim 6 , wherein the lecithin fatty acid blend of (a) comprises between 20 and 40 wt % acetone insoluble matter.

Assignees

• Cargill Inc

Inventors

• Kurth Todd L
• Stauduhar Suzanne
• Karl Andrew

Classifications

• C09K8/035 Primary

  Organic additives · CPC title

• A23D9/013

  Other fatty acid esters, e.g. phosphatides · CPC title

• A23D9/02

  characterised by the production or working-up · CPC title

• C07F9/103

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

• C08L95/00

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