Multi-surfactant systems comprising lauric arginate ethyl ester and fatty acid

Patent metadata

Field	Value
Publication number	US-10550353-B2
Application number	US-201615572129-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	May 22, 2015
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

Multi-surfactant systems where two or more surfactant molecules are coupled to control the spatial distribution of polar groups of the combined surfactant molecules are disclosed. The system can be implemented by an aqueous medium including an associate charge constant surfactant and charge variable surfactant. The charge variable surfactant has at least one neutral end group at one pH value of the medium and at least one either an anionic polar group or a cationic polar group at a different pH value of the medium. The charge constant surfactant has at least one, and preferably two or more groups that does not change charge at the one or different pH values of the aqueous medium. The multi-surfactant system can be coupled or connected to the surface of a substrate where the arrangement of the two or more coupled surfactant molecules control the polarity of the substrate surface.

First claim

What is claimed is:

1. A composition comprising:
a) a lauric arginate ethyl ester associated with a fatty acid in an aqueous medium, wherein the lauric arginate ethyl ester and the fatty acid are at a molar ratio of 1:1; and
b) a substrate which is a polysaccharide selected from the group consisting of a starch, cationic starch, anionic starch, potato starch, pectin, carrageenan, alginate, xanthan gum, carboxymethyl cellulose, and cellulose, wherein the aqueous medium is coupled to the substrate surface.

2. The composition of claim 1 , wherein said fatty acid is selected from the group consisting of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, and stearic acid.

3. The composition of claim 1 , wherein said fatty acid is caprylic acid.

4. The composition of claim 1 , wherein said fatty acid is capric acid.

5. The composition of claim 1 , wherein said fatty acid is lauric acid.

6. The composition of claim 1 , wherein said fatty acid is myristic acid.

7. The composition of claim 1 , wherein said fatty acid is palmitic acid.

8. The composition of claim 1 , wherein said fatty acid is stearic acid.

Assignees

• Penn State Res Found

Inventors

• Catchmark Jeffrey
• Chi Kai

Classifications

• C11D1/12

  Sulfonic acids or sulfuric acid esters; Salts thereof · CPC title

• C11D1/04 Primary

  Carboxylic acids or salts thereof (soap C11D9/00) · CPC title

• C11D1/835

  Mixtures of non-ionic with cationic compounds · CPC title

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title

• C11D1/528

  Carboxylic amides (R1-CO-NR2R3), where at least one of the chains R1, R2 or R3 is interrupted by a functional group, e.g. a -NH-, -NR-, -CO-, or -CON- group (ethers C11D1/526) · CPC title