Liquid skin cleanser

Patent metadata

Field	Value
Publication number	US-9943470-B2
Application number	US-201415533380-A
Country	US
Kind code	B2
Filing date	Dec 18, 2014
Priority date	Dec 18, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A skin cleansing composition comprising a salt of lauric acid; a salt of stearic acid; and at least one surfactant that is not a salt of a fatty acid; wherein the ratio of the salt of lauric acid to the salt of stearic acid, calculated as the ratio of lauric acid to stearic acid by weight, is from 2.5:1 to 3.5:1. Also provided are methods of using the compositions.

First claim

What is claimed is:

1. A liquid skin cleanser composition comprising:
a salt of lauric acid;
a blend of salts of stearic acid and palmitic acid;
at least one surfactant that is not a salt of a fatty acid; and
cocomonoethanolamide;
wherein the ratio of the salt of lauric acid to the blend of salts of stearic acid and palmitic acid, calculated as the ratio by weight of lauric acid to combined weight of stearic acid and palmitic acid, is from 2.5:1 to 3.5:1;
wherein the salt of lauric acid is potassium laurate; the blend of salts of stearic acid and palmitic acid is a blend of potassium stearate and potassium palmitate; the at least one surfactant that is not a salt of a fatty acid includes sodium laureth sulfate, cocoamidopropyl betaine, and ethoxylated fatty alcohol.

2. The composition of claim 1 , wherein the ratio of the salt of lauric acid to the combined salts of palmitic and stearic acids, calculated as the ratio of weight of lauric acid to combined weight of palmitic and stearic acid, is about 3:1.

3. The composition of claim 1 , wherein the ratio of the amount of salt of palmitic acid to the amount of salt of stearic acid in the blend, calculated as the ratio of weight of palmitic acid to stearic acid in the blend is from 1.3:1 to 1.8:1; preferably about 1.5:1.

4. The composition of claim 1 , which is devoid of myristic acid, or its salts.

5. The composition of claim 1 , which is devoid of salts of fatty acids other than the salts of lauric acid, palmitic acid and stearic acid.

6. The composition of claim 1 further comprising an antibacterial agent.

7. The composition of claim 6 , wherein the antibacterial agent is selected from trichlorocarbanilide, triclocarban, PCMX/chloroxylenol, IPMP/o-Cymen-5-ol, Zinc Compounds, and Phenoxyethanol, wherein the antibacterial agent is present in an amount of from 0.01% to 3% by weight of the composition.

8. The composition of claim 6 , wherein the antibacterial agent is trichlorocarbanilide, which is present in an amount of from 0.01% to 0.3% by weight of the composition.

9. The composition of claim 1 , wherein sodium laureth sulfate is present in the composition an amount of from 5% to 12% by weight.

10. The composition of claim 1 , wherein the ethoxylated fatty alcohol is present in the composition an amount of from 0.2% to 1% by weight.

11. The composition of claim 1 , wherein the at least one surfactant that is not a salt of a fatty acid further comprises a propoxylated monoethanolamide, wherein the propoxylated monoethanolamide is PPG-2 Hydroxyethyl Cocamide, which is present in the composition an amount of from 0.2% to 1% by weight.

12. The composition of claim 1 , wherein the cocoamidopropyl betaine is present in an amount of 5% to 12% of the composition by weight.

13. The composition of claim 1 , wherein cocomonoethanolamide is present in an amount of from 0.5% to 2.5% of the composition by weight.

14. The composition of claim 1 , wherein the composition comprises:
4 to 6% by weight of the potassium laurate,
1 to 2% by weight of the potassium stearate,
0.8 to 2% by weight of the potassium palmitate,
8 to 13% by weight of the sodium laureth sulfate,
5 to 9% by weight of the cocoamidopropyl betaine,
0.6 to 1.2% by weight of the ethoxylated fatty alcohol, and
0.5 to 2% by weight of the cocomonoethanolamide.

Assignees

• Colgate Palmolive Co

Inventors

• Ruan Yang
• Yin Huiyan

Classifications

• A61K8/442

  substituted by amido group(s) · CPC title

• A61K8/45

  Derivatives containing from 2 to 10 oxyalkylene groups · CPC title

• A61K8/463

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

• A61K2800/74

  Biological properties of particular ingredients · CPC title

• A61K8/39

  Derivatives containing from 2 to 10 oxyalkylene groups · CPC title