Cleansing composition with improved availability of benefit agent

Patent metadata

Field	Value
Publication number	US-10758750-B2
Application number	US-201615747243-A
Country	US
Kind code	B2
Filing date	Jul 4, 2016
Priority date	Jul 29, 2015
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

The present invention provides a cleansing composition comprising 10 to 30 wt % soap, 20 to 45 wt % water soluble organic solvent, 20 to 40 wt % water, 3 to 20 wt % electrolyte other than soap and a benefit agent.

First claim

The invention claimed is:

1. A cleansing composition comprising:
a. 10 to 30 wt. % soap,
b. 20 to 45 wt. % water soluble organic solvent comprising a polyol,
c. 20 to 40 wt. % water,
d. 4 to 10 wt. % electrolyte other than soap, and
e. benefit agent comprising a fragrance;
wherein the soap to (polyol+water) ratio is in the range of 0.3:1 to 0.65:1; and further
wherein the electrolyte is selected from the group consisting of sodium sulfate, sodium chloride, sodium acetate, sodium citrate, potassium chloride, potassium sulfate, sodium carbonate and other mono, di or tri alkaline earth metals salts thereof, the water and polyol collectively make up at least 50% by weight of the cleansing composition and soap in total includes at least 70 wt. % soap of C 8 to C 14 fatty acid.

2. A composition according to claim 1 , wherein total fatty matter of the composition is at most 35% by weight of the composition.

3. A composition according to claim 1 , wherein non soap surfactant is up to 15% by weight of the composition.

4. A composition according to claim 1 , wherein the benefit agent is from 0.00005 to 5% by weight of the composition and the soap in total is at most 30 wt % soap of C 16 to C 22 fatty add.

5. A composition according to claim 1 , wherein the benefit agent is water insoluble.

6. A composition according to claim 1 , wherein the benefit agent is an organic compound having log P value in the range of 0.4 to 12.

7. A composition according to claim 1 , wherein the benefit agent is present in an amount of at least 55% of saturation concentration.

8. A composition according to claim 1 , wherein the water-soluble organic solvent is a polyol.

9. A composition according to claim 1 , wherein 40 to 70 wt. % of the soap content is soluble soap.

10. A composition according to claim 1 , wherein ratio of solid phase to liquid phase of the composition is in the range of 1:1.85 to 1:10.

11. A composition according to claim 1 , wherein the benefit agent is a fragrance.

12. A method of depositing a benefit agent on a surface comprising:
a. contacting the surface with the composition according to claim 1 ; and
b. rinsing the surface with a suitable solvent or wiping the surface with a suitable wipe.

13. A process for preparing the composition according to claim 1 , the process comprising steps of:
a. preparing a melt of the composition at a temperature in the range of 40 to 90° C.;
b. pouring the melt into a suitable mould;
c. cooling the composition to a temperature in the range of 20 to 30° C.; and
d. demoulding the composition.

14. A composition according to claim 1 , wherein the electrolyte is selected from the group consisting of sodium sulfate, sodium chloride and sodium citrate.

15. A composition according to claim 1 , wherein the soluble to insoluble soap ratio ranges from 1:0.95 to 1:0.65.

16. A cleansing composition comprising:
a. 10 to 30 wt. % soap,
b. 20 to 45 wt. % water soluble organic solvent comprising a polyol,
c. 20 to 40 wt. % water,
d. 4 to 10 wt. % electrolyte other than soap, and
e. benefit agent comprising a fragrance;
wherein the soap to (polyol+water) ratio is in the range of 0.3:1 to 0.65:1; further
wherein the polyol is selected from the group consisting of glycerol, sorbitol, propylene glycol and polyethylene glycol; and
wherein the electrolyte is selected from the group consisting of sodium sulfate, sodium chloride, sodium acetate, sodium citrate, potassium chloride, potassium sulfate, sodium carbonate and other mono, di or tri salts of alkaline earth metals thereof, the water and polyol collectively make up at least 50% by weight of the cleansing composition and soap in total includes at least 70 wt. % soap of C 8 to C 14 fatty acid.

17. The composition of claim 16 , further comprising 2 to 10 wt. % non-soap co-surfactant.

18. The composition of claim 17 , wherein the co-surfactant comprises a C 8 to C 22 alkyl sulphonate, sulphate ester or a mixture thereof.

Assignees

• Conopco Inc

Inventors

• Agarkhed Ajit Manohar
• Bankar Pravin
• Kumar Nitish

Classifications

• C11D3/1206

  free metals, e.g. aluminium grit or flakes · CPC title

• A61K8/361

  Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof · CPC title

• A61K8/345

  containing more than one hydroxy group · CPC title

• C11D3/48

  Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions · CPC title

• A61K8/86

  Polyethers · CPC title