Personal cleansing composition

Patent metadata

Field	Value
Publication number	US-11779528-B2
Application number	US-201816640824-A
Country	US
Kind code	B2
Filing date	Aug 22, 2018
Priority date	Aug 25, 2017
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

Disclosed are water-based personal cleansing compositions having an isotropic surfactant phase, the compositions containing (a) cationic surfactant that includes a quaternary ammonium compound and/or an amidoamine, (b) cleansing surfactant and (c) water, the cleansing surfactant containing 85 to 100% by weight of a combination of betaine surfactant and taurate surfactant in particular ratios; also disclosed are methods of thickening such compositions by the addition of electrolyte.

First claim

What is claimed is:

1. A personal cleansing composition comprising:
a) a cationic surfactant comprising an amidoamine
b) 5 to 15 wt. % cleansing surfactant, and
c) water,
wherein:
the cleansing surfactant contains from 85 to 100% by weight of a combination of betaine surfactant and taurate surfactant, wherein the taurate surfactant is an acyl taurate represented by the general formula:
R 8 C(O)N(R 9 )(CH 2 ) y SO 3 M  (IIIa)

where R 9 is C6 to C30 alkyl,
y is 2 or 3,
R 9 is hydrogen or methyl, and
M is a solubilizing cation, and wherein:
when the composition contains 5 to 6 weight percent of cleansing surfactant, the weight ratio of betaine surfactant to taurate surfactant is from 55:45 to 45:55;
when composition contains from greater than 6 weight percent to up to 10 weight percent of cleansing surfactant, the weight ratio of betaine surfactant to taurate surfactant is from 80:20: to 40:60; and
when the composition contains greater than 10 weight percent of cleansing surfactant, the weight ratio of betaine surfactant to taurate surfactant is from 80:20: to 20:80;
wherein the composition further comprises electrolyte;
wherein the personal cleansing composition is essentially free of a cationic derivative of guar gum;
wherein the composition is essentially free of (meth)acrylate polymers and copolymers;
wherein the composition is essentially free of sulfate surfactant.

2. The personal cleansing composition according to claim 1 , wherein the quaternary ammonium compound includes one to three long chain alkyl groups having an ester, ether or amido inter-chain linkage, wherein the alkyl groups are saturated or unsaturated.

3. The personal cleansing composition according to claim 1 , wherein the quaternary ammonium compound comprises a mono- and/or dialkyl quat.

4. The personal cleansing composition according to claim 1 , wherein the betaine surfactant is an amidobetaine and the taurate surfactant is an acyl taurate.

5. The personal cleansing composition according to claim 1 , wherein the betaine surfactant comprises cocamidopropyl betaine and the taurate surfactant comprises sodium methyl cocoyl taurate.

6. The personal cleansing composition according to claim 1 , wherein the composition comprises from 6 to 12 wt. % of cleansing surfactant, based on the total weight of the composition.

7. The personal cleansing composition according to claim 1 , wherein the composition has an isotropic surfactant phase.

8. The personal cleansing composition according to claim 1 , wherein the composition is transparent.

9. The personal cleansing composition according to claim 1 , wherein the composition has a pH of 4 to 6.

10. A method of adjusting the viscosity of a composition, the method comprising the steps of:
I) providing the personal cleansing composition according to claim 1 ; and
II) adding electrolyte to the composition, wherein the addition of electrolyte increases the viscosity of the resulting composition.

11. The personal cleansing composition according to claim 1 , wherein y is 2.

12. The personal cleansing composition according to claim 1 , wherein the betaine surfactant is represented by the general formula:
R 10 [C(O)NH—(CH 2 ) y ] z —N + (R 11 )(R 12 )CH 2 CO 2 −   (IV)

where R 10 is C6 to C30 alkyl,
z is 0 or 1,
R 11 and R 12 are independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 3 carbon atoms, and
y is 2 or 3; and salts thereof.

13. The personal cleansing composition according to claim 1 , wherein the amidoamine comprises stearamidopropyl dimethyl amine.

14. The personal cleansing composition according to claim 1 , wherein the electrolyte comprises sodium chloride, ammonium chloride, magnesium chloride, sodium sulfate, sodium citrate, and combinations thereof.

15. The personal cleansing composition according to claim 1 , wherein the electrolyte is present in an amount of 0.05 to 3 wt. %, based on the total weight of the personal cleansing composition.

16. The personal cleansing composition according to claim 1 , wherein the composition comprises less than 0.01 wt. % of a cationic derivative of guar gum.

17. The personal cleansing composition according to claim 1 , wherein the composition is free of a cationic derivative of guar gum.

18. The personal cleansing composition according to claim 1 , wherein the composition comprises less than 0.001 wt. % of (meth)acrylate polymers and copolymers.

19. The personal cleansing composition according to claim 1 , wherein the composition is free of (meth)acrylate polymers and copolymers.

Assignees

• Conopeo Inc
• Conopco Inc

Inventors

• Trentini Massimiliano
• Thompson Helen Diane
• Bentley Christopher David
• Coan Lynsey Joanne

Classifications

• A61K8/416 Primary

  Quaternary ammonium compounds (A61K8/35 takes precedence) · CPC title

• A61K8/19

  containing inorganic ingredients · CPC title

• A61K8/365

  Hydroxycarboxylic acids; Ketocarboxylic acids · CPC title

• A61K8/42 Primary

  Amides · CPC title

• A61K8/44

  Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof · CPC title