Soap bar

Patent metadata

Field	Value
Publication number	US-9856441-B2
Application number	US-201315103205-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Dec 10, 2013
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

Provided herein is a method for reducing or inhibiting the crystallization of taurine in a soap bar, wherein the method comprises: a) admixing a fatty acid soap with an aqueous solution of taurine or taurine salt as a taurine source to form an amalgamate and b) preparing a soap bar comprising the amalgamate. Further provided is a soap bar obtained by the above method.

First claim

The invention claimed is:

1. A method for reducing or inhibiting the crystallization of taurine in a soap bar, wherein the method comprises:
a) admixing a fatty acid soap with an aqueous solution of taurine or a taurine salt as a taurine source to form an amalgamate and,
b) preparing a soap bar comprising the amalgamate;
wherein the taurine is represented by Formula 1:

wherein X is a cation selected from hydrogen, an alkali metal cation, ammonium and triethanolammonium,
and wherein R 1 and R 2 are independently selected from H and a C 1 -C 4 alkyl, and
wherein a pH of the soap bar, in aqueous solution, is from 9 to 11.

2. The method of claim 1 , wherein R 1 and R 2 are H.

3. The method of claim 1 , wherein X is an alkali metal cation selected from sodium and potassium.

4. The method of claim 1 , wherein the soap bar does not comprise any taurine source other than the aqueous solution of the taurine or taurine salt.

5. The method of claim 1 , wherein the aqueous taurine or taurine salt solution comprises taurine or taurine salt in an amount of 40 to 60 weight %.

6. The method of claim 1 , wherein the soap bar comprises taurine or taurine salt as defined in Formula 1, in an amount of 0.1 to 5 weight % by total weight of the soap bar.

7. The method of claim 6 , wherein the soap bar comprises taurine or taurine salt in an amount of 1 to 3 weight % by total weight of the soap bar.

8. The method of claim 1 , wherein the fatty acid soap is admixed with the aqueous solution of taurine or a taurine salt at a temperature of 25° C. to 35° C.

9. The method of claim 1 , wherein the aqueous solution of the taurine or taurine salt is further admixed with fragrance to form the amalgamate.

10. A soap bar obtained by the method of claim 1 .

11. A method for cleansing skin, comprising applying the soap bar of claim 10 to skin.

12. A method for manufacturing a soap bar, comprising:
a) combining a fatty acid soap with the aqueous solution of taurine or a taurine salt to form an amalgamate and,
b) preparing a soap bar comprising the amalgamate;
wherein the taurine or taurine salt is represented by Formula 1:

wherein X is a cation selected from hydrogen, an alkali metal, ammonium and triethanolammonium,
and wherein R 1 and R 2 are independently selected from H and a C 1 -C 4 alkyl,
wherein the aqueous solution of the taurine or taurine salt is prepared by admixing an alkali metal hydroxide solution, taurine or taurine salt, and water, wherein the alkali metal is selected from sodium and potassium, and
wherein a pH of the soap bar, in aqueous solution, is from 9 to 11.

13. The method of claim 12 , wherein R 1 and R 2 are H.

14. The method of claim 12 , wherein X is potassium.

15. The method of claim 12 , wherein the soap bar does not comprise any taurine source other than the aqueous solution of the taurine or taurine salt.

16. The method of claim 12 , wherein the aqueous taurine or taurine salt solution comprises taurine or taurine in an amount of 40 to 60 weight %.

17. The method of claim 12 , wherein the soap bar comprises taurine or taurine salt in an amount of 0.1 to 5 weight % by total weight of the soap bar.

18. The method of claim 17 , wherein the soap bar comprises taurine or taurine salt in an amount of 1 to 3 weight % by total weight of the soap bar.

19. The method of claim 12 , wherein the fatty acid soap is admixed with the aqueous solution of taurine salt or a taurine salt at a temperature of 25° C. to 35° C.

20. The method of claim 12 , wherein the aqueous solution of the taurine or taurine salt is further admixed with fragrance to form the amalgamate.

21. The method of claim 12 , wherein X is sodium.

Assignees

• Colgate Palmolive Co

Inventors

• Gu Ben
• Chupa Janine

Classifications

• C11D9/32 Primary

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

• C11D17/006

  containing mainly surfactants, but no builders, e.g. syndet bar · CPC title

• C11D17/0047

  Detergents in the form of bars or tablets · CPC title

• C11D13/10

  Mixing; Kneading · CPC title

• C11D17/00

  Detergent materials or soaps characterised by their shape or physical properties (shaping soap C11D13/14) · CPC title