Cleansing bars

Patent metadata

Field	Value
Publication number	US-10821059-B2
Application number	US-201516066874-A
Country	US
Kind code	B2
Filing date	Dec 31, 2015
Priority date	Dec 31, 2015
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Described herein, are personal care compositions comprising a cleanser base comprising at least one cleanser selected from a soap and a surfactant; and an effective amount of an antibacterial system comprising a combination of phenoxyethanol and piroctone, or a salt thereof. Methods of making and using these compositions are also described.

First claim

What is claimed is:

1. A method for preparing a personal care composition, said personal care composition comprising a cleanser base comprising at least one cleanser chosen from a soap and a surfactant; and an effective amount of an antibacterial system consisting of: phenoxyethanol, piroctone olamine, and petrolatum, said method comprising the steps of:
providing a pre-mixture comprising piroctone olamine and a solvent; and combining the pre-mixture with said cleanser base;
wherein the phenoxyethanol is present in an amount of from 0.01% to 2% by weight of the personal care composition;
wherein the piroctone olamine is present in an amount of from 0.01% to 1.5% by weight of the personal care composition; and
wherein the petrolatum is present in an amount of from 0.1 to 0.9% by weight of the personal care composition.

2. The method of claim 1 , wherein the solvent comprises propylene glycol.

3. The method of claim 1 , wherein:
the solvent comprises phenoxyethanol or propylene glycol; and
the pre-mixture comprising phenoxyethanol and piroctone olamine, is prepared by combining the solvent and the piroctone olamine, and optionally heating to a temperature up to about 120° C.

4. The method of claim 3 , wherein the phenoxyethanol and piroctone olamine are heated to a temperature from about 60 to about 100° C.; or from about 65 to about 80° C.

5. The method of claim 1 , wherein:
the solvent comprises phenoxyethanol or propylene glycol; and
the pre-mixture comprising solvent and piroctone olamine comprises from 1-30% by weight piroctone olamine in said pre-mixture.

6. The method of claim 1 , further comprising providing a second pre-mixture comprising piroctone olamine, in a second solvent; and combining the second pre-mixture with the cleanser base.

7. The method of claim 1 , wherein the pre-mixture comprising piroctone olamine, or salt thereof, and propylene glycol is heated to a temperature of from about 40 to about 80° C.; or from about 50 to about 70° C.; or to about 60° C.

8. The method of claim 2 , wherein the pre-mixture comprising propylene glycol and piroctone olamine, or a salt thereof, comprises from 1-16% by weight piroctone olamine.

9. The method of claim 1 , wherein the cleanser base comprises from about 20, 30, 40, 50 or 60% by weight of the personal care composition to about 70, 80, 85, 90 or 95% by weight of the composition.

10. The method of claim 1 , wherein the piroctone olamine is in powder form.

Assignees

• Colgate Palmolive Co

Inventors

• Dubovoy Viktor
• Mastrull Jeffrey
• Talancon Daniel
• Santos David
• Du-Thumm Laurence
• Pan Long
• Cazes Abraham
• VALENCIA GARCIA Enrique

Classifications

• A61K8/4926 Primary

  having six membered rings · CPC title

• A61K8/347

  Phenols · CPC title

• A61Q17/005

  Antimicrobial preparations · CPC title

• A61K8/34 Primary

  Alcohols · CPC title

• A61K8/0216

  Solid or semisolid forms · CPC title