Non-soap liquid cleanser composition comprising caprylic acid

Patent metadata

Field	Value
Publication number	US-11607377-B2
Application number	US-201816756627-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Oct 17, 2017
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

This invention relates to syndet-based compositions having pH of 4.5 to 5.5 wherein use of caprylic acid has been unexpectedly found to enhance bacterial kill.

First claim

The invention claimed is:

1. A liquid composition comprising:
a) 5 to 25% anionic surfactant;
b) 0 to 5% non-ionic surfactant
c) optional amphoteric surfactant,

wherein the anionic surfactant is 50% or more of surfactants;
d) 0.5 to 3% caprylic acid;

wherein a pH is 4.5 to 5.5,
wherein there is additionally present an organic acid having a pKa 4.5 to 5.0, a log P greater than 1.8 and water solubility greater than 0.5 g/100 ml;
wherein the organic acid is phenylpropanoic acid.

2. The liquid composition according to claim 1 , wherein the anionic surfactant is alkyl sulfate, amino-acid based surfactant or mixtures thereof.

3. The liquid composition according to claim 1 , wherein the non-ionic surfactant is present at a level of 0.5 to 4%.

4. The liquid composition according to claim 1 , wherein the non-ionic surfactant, if present, is cocomonoalkanolamide.

5. The liquid composition according to claim 1 , which additionally comprises antibacterial agents.

6. The liquid composition according to claim 5 , wherein such antibacterial agent is selected from the group consisting of thymol, terpineol, silver, phenoxyethanol, and mixtures thereof.

7. The liquid composition according to claim 1 , wherein the organic acid is 3-phenylpropionic acid.

8. The liquid composition according to claim 1 , wherein there is additionally present a non-ionic molecule, separate from the non-ionic surfactant.

9. The liquid composition according to claim 8 , wherein the non-ionic molecule is selected from the group consisting of capryl glycol, phenoxyethanol, sorbitan caprylate, and mixtures thereof.

10. The liquid composition according to claim 1 , wherein total surfactant is present at 5 to 8% of the composition.

11. A process of making the compositions of claim 1 , comprising:
a) providing 5 to 25% by wt. anionic surfactant, 0 to 5%, non-ionic surfactant, optional amphoteric surfactant, wherein the anionic surfactant is 50% or more of surfactants, 0.5 to 3% caprylic acid, and an additional organic acid having a pKa of 4.5 to 5.0, a log P greater than 1.8 and water solubility greater than 0.5 g/100 ml, wherein the organic acid is phenylpropanoic acid;
b) combining said components of (a) to form a liquid mixture having a pH 4.5 to 5.5;
c) packaging the resulting mixture in a container.

12. A composition comprising 0.5 to 3.0% by wt. caprylic acid in compositions comprising 5 to 25% anionic surfactant, 0 to 5% by wt. non-ionic surfactant and optional amphoteric surfactant, where a pH of the composition is 4.5 to 5.5, wherein the composition is configured to provide antibacterial activity against both gram positive and gram negative bacteria; wherein there is additionally present an organic acid having pKa of 4.5 to 5.0, a log P greater than 1.8 and water solubility greater than 0.5 g/100 ml, wherein the organic acid is phenylpropanoic acid.

13. The liquid composition according to claim 1 , wherein the pH is 4.5-5.1.

14. The process according to claim 11 , wherein the non-ionic surfactant is present in an amount of 0.5 to 4% by wt.

Assignees

• Conopco Inc

Inventors

• Agarkhed Ajit Manohar
• Bapat Mohini Anand
• Chandar Prem
• Gandhi Poonam Manoj
• Shiloach Anat
• Wu Guohui

Classifications

• A61K8/463

  containing sulfuric acid derivatives, e.g. sodium lauryl sulfate · CPC title

• C11D1/10

  Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof · CPC title

• C11D1/146

  Sulfuric acid esters · CPC title

• A61K2800/596

  Mixtures of surface active compounds · CPC title

• A61K8/19

  containing inorganic ingredients · CPC title