Solid cleansing compositions with taurine and methods thereof

Patent metadata

Field	Value
Publication number	US-11111463-B2
Application number	US-201616323821-A
Country	US
Kind code	B2
Filing date	Aug 8, 2016
Priority date	Aug 8, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A solid liquid cleansing composition and methods of preparing the same are disclosed. The solid cleansing composition may include a soap and an ionic liquid. The soap may be a sodium soap, an ammonium soap, a potassium soap, a magnesium soap, a calcium soap, or a combination thereof. The ionic liquid may include a base, taurine, and/or water.

First claim

What is claimed is:

1. A solid cleansing composition, comprising:
a soap; and
an ionic liquid comprising taurine and a Brønsted base selected from urea, arginine, lysine, acetamide, and guanidine.

2. The solid cleansing composition of claim 1 , wherein the ionic liquid is an anhydrous ionic liquid having less than 0.5 wt % water based on a total weight of the ionic liquid.

3. The solid cleansing composition of claim 1 , wherein the ionic liquid further comprises water.

4. The solid cleansing composition of claim 3 , wherein the ionic liquid is a hydrated ionic liquid having greater than or equal to 0.5 wt % water based on a total weight of the ionic liquid.

5. The solid cleansing composition of claim 1 , wherein a molar ratio of the Brønsted base to taurine is greater than or equal to 1:1.

6. The solid cleansing composition of claim 1 , wherein a molar ratio of the Brønsted base to taurine is greater than 1:1 and less than or equal to 3:1.

7. The solid cleansing composition of claim 1 , wherein a molar ratio of the Brønsted base to taurine is greater than 1:1 and less than or equal to 2.5:1.

8. The solid cleansing composition of claim 1 , wherein a molar ratio of the Brønsted base to taurine is greater than 1:1 and less than or equal to 2:1.

9. The solid cleansing composition of claim 3 , wherein a molar ratio of taurine to water is greater than or equal to 1:1.

10. The solid composition of claim 3 , wherein a molar ratio of taurine to water is greater than 1:1 and less than or equal to 3:1.

11. The solid composition of claim 3 , wherein a molar ratio of taurine to water is greater than 1:1 and less than or equal to 2:1.

12. The solid cleansing composition of claim 1 , wherein the Brønsted base is urea.

13. The solid cleansing composition of claim 1 , wherein the soap is a sodium soap, an ammonium soap, a potassium soap, a magnesium soap, a calcium soap, or a combination thereof.

14. The solid cleansing composition of claim 1 , wherein the soap comprises alkali metal salts of aliphatic acids having 8 to 22 carbon atoms.

15. A method for preparing the solid cleansing composition of any one of the preceding claims, comprising:
contacting the Brønsted base with taurine;
heating the Brønsted base and taurine to form the ionic liquid; and
contacting the ionic liquid with the soap.

16. The method of claim 15 , further comprising contacting the Brønsted base with water to form a slurry before contacting the Brønsted base with taurine.

17. The method of claim 16 , further comprising contacting the taurine with the slurry before heating the Brønsted base and taurine.

18. The method of claim 15 , wherein heating the Brønsted base and taurine comprises heating the Brønsted base and taurine to a temperature greater than 80° C.

19. The method of claim 15 , further comprising melting the Brønsted base before solubilizing taurine.

20. A solid cleansing composition, comprising:
a soap selected from the group consisting of a sodium soap, an ammonium soap, a potassium soap, a magnesium soap, a calcium soap, or a combination thereof; and
an ionic liquid comprising urea and taurine, wherein the ionic liquid is an anhydrous ionic liquid having less than 0.05 wt % water based on a total weight of the ionic liquid, and wherein a molar ratio of the urea to taurine is greater than 1:1 and less than or equal to 3:1.

Assignees

• Colgate Palmolive Co

Inventors

• Smart Scott
• Pan Long

Classifications

• A61K8/42 Primary

  Amides · CPC title

• C11D9/32

  containing sulfur {(C11D9/225 takes precedence)} · CPC title

• A61Q19/10

  Washing or bathing preparations · CPC title

• A61K8/466

  containing sulfonic acid derivatives; Salts · CPC title

• C11D9/02 Primary

  on alkali or ammonium soaps · CPC title