Thickener in a percarbonate-containing bleaching agent contained in a multi-layer sachet

Patent metadata

Field	Value
Publication number	US-10945930-B2
Application number	US-201916697598-A
Country	US
Kind code	B2
Filing date	Nov 27, 2019
Priority date	Dec 28, 2018
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

The present disclosure relates to a cosmetic agent for bleaching human hair, comprising (i) a package comprising at least one multi-layer film, which comprises at least one metal-containing layer as a barrier layer, and (ii) a bleaching agent composition, which is contained in the package, wherein the bleaching agent composition contains at least one percarbonate, at least one inorganic salt of a peroxysulfuric acid, and at least one thickener. The present disclosure also relates to a method for bleaching human hair.

First claim

The invention claimed is:

1. A cosmetic product for bleaching keratin fibres, comprising:
(i) a package comprising at least one multi-layer film, which comprises at least one metal-containing layer as a barrier layer; and
(ii) a bleaching agent composition, which is contained in the package; wherein
the bleaching agent composition comprises
at least one percarbonate,
at least one inorganic salt of a peroxysulfuric acid, and
at least one thickener.

2. The cosmetic product according to claim 1 , wherein the at least one inorganic salt of a peroxysulfuric acid is selected from the group of sodium peroxydisulfate, potassium peroxydisulfate, ammonium peroxydisulfate, sodium peroxymonosulfate, potassium peroxymonosulfate and ammonium peroxymonosulfate, and mixtures of these inorganic salts of a peroxysulfuric acid, and wherein the total quantity of inorganic salt of a peroxy sulfuric acid is from about 10 to about 70 wt %, in relation to a total weight of the bleaching agent composition.

3. The cosmetic product according to claim 1 , wherein the inorganic salt of a peroxy sulfuric acid is a mixture comprising from about 5 to about 40 wt % potassium peroxydisulfate, from about 5 to about 20 wt % ammonium peroxydisulfate, and from about 0 to about 10 wt % sodium peroxydisulfate, in each case in relation to a total weight of the bleaching agent composition.

4. The cosmetic product according to claim 1 , wherein the at least one percarbonate is an alkaline, alkaline earth metal or ammonium salt of a percarbonate, and wherein the bleaching agent composition comprises the at least one percarbonate in a total quantity of from about 2 to about 14 wt % in relation to a total weight of the bleaching agent composition.

5. The cosmetic product according to claim 1 , wherein the at least one thickener comprises a polysaccharide, wherein the bleaching agent composition comprises the at least one thickener in a total quantity of from about 0.5 to about 15 wt %, in relation to a total weight of the bleaching agent composition.

6. The cosmetic product according to claim 1 , wherein the at least one thickener is a mixture of a cellulose gum, a hydroxyethyl cellulose and a xanthan gum, wherein the quantity of cellulose gum is from about 0.2 to about 5 wt %, the quantity of xanthan gum is from 0.1 to 5 wt %, and the quantity of hydroxyethyl cellulose is from 0.2 to 5 wt %, in each case in relation to a total weight of bleaching agent composition.

7. The cosmetic product according to claim 1 , wherein the multi-layer film comprises at least one first polymer layer (P1), at least one second polymer layer (P2) and the barrier layer (BS), wherein the first polymer layer (P1) is formed from polyethylene terephthalate or polyethylene naphthalate; the second polymer layer (P2) is formed from a polyolefin; and the barrier layer (BS) comprises aluminium; wherein the first polymer layer (P1) has a layer thickness of from about 5 to about 20 μm, the second polymer layer has a layer thickness of from about 50 to about 100 μm, and the barrier layer has a layer thickness of from 3 to 30 μm.

8. The cosmetic product according to claim 7 , wherein the barrier layer (BS) is arranged between the first polymer layer (P1) and the second polymer layer (P2), and wherein the first polymer layer is situated on the side facing away from the bleaching agent composition.

9. The cosmetic product according to claim 1 , wherein the package is a one-chamber sachet in which the percarbonate and the inorganic salt of a peroxysulfuric acid are present;
wherein the multi-layer film (F) has an oxygen transmission rate (OTR) of less than about 0.1 cc/m2/d/bar at 23° C. and 0% relative humidity, and a water vapour permeability of less than about 0.1 g/m2d at 38° C. and 90% relative humidity.

10. A method for bleaching human hair, the method comprising the steps of:
(a) introducing the bleaching agent composition according to claim 1 into an amount of water,
(b) homogenizing the obtained mixture from (a), and
(c) applying the homogenised mixture from (b) to the human hair.

11. The cosmetic product according to claim 1 , wherein:
the package is a two-chamber bag and the percarbonate is contained in a first chamber of the two-chamber bag and the inorganic salt of a peroxysulfuric acid is contained in a second chamber of the two-chamber bag; and
wherein the multi-layer film (F) has an oxygen transmission rate (OTR) of less than about 0.1 cc/m2/d/bar at 23° C. and 0% relative humidity, and a water vapour permeability of less than about 0.1 g/m2d at 38° C. and 90% relative humidity.

12. The cosmetic product according to claim 1 wherein:
the at least one inorganic salt of a peroxysulfuric acid is selected from the group of mixtures of potassium peroxydisulfate and ammonium peroxydisulfate, and mixtures of sodium peroxydisulfate and ammonium peroxydisulfate; and
wherein the total quantity of inorganic salt of a peroxysulfuric acid is from about 10 to about 70 wt %, in relation to a total weight of the bleaching agent composition.

13. The cosmetic product according to claim 7 , wherein:
the first polymer layer (P1) has the layer thickness of from about 8 to about 16 μm, the second polymer layer (P2) has the layer thickness of from about 60 to about 90 μm, and the barrier layer (BS) has the layer thickness of from about 5 to about 15 μm.

14. The cosmetic product according to claim 7 , wherein:
the first polymer layer (P1) has the layer thickness of from about 10 to about 14 μm, the second polymer layer (P2) has the layer thickness of from about 70 to about 80 μm, and the barrier layer (BS) has the layer thickness of from about 8 to about 12 μm.

15. The cosmetic product according to claim 1 , wherein:
wherein the at least one thickener comprises a mixture of an at least partially ionic polysaccharide and a non-ionic polysaccharide, wherein the bleaching agent composition comprises the at least one thickener in a total quantity of from about 0.5 to about 15 wt %, in relation to a total weight of the bleaching agent composition.

16. The cosmetic product according to claim 15 , wherein:
the bleaching agent composition comprise the at least one thickener in a total quantity of from about 4 to about 8 wt %, in relation to the total weight of the bleaching agent composition.

17. The cosmetic product according to claim 7 , wherein:
the first polymer layer (P1) comprises polyethylene terephthalate, and the second polymer layer (P2) comprises polyethylene.

18. The cosmetic product according to claim 1 , wherein;
the at least one percarbonate is sodium percarbonate, and wherein the bleaching agent composition comprises the sodium percarbonate in a total quantity of from about 6 to about 12 wt %, in relation to a total weight of the bleaching agent composition.

19. A cosmetic product comprising:
(i) a package comprising at least one multi-layer film, wherein the multi-layer film comprises a first polymer layer (P1), a second polymer layer (P2) and a barrier layer (BS), wherein the first polymer layer (P1) comprises polyethylene terephthalate and has a layer thickness of from about 10 to about 14 μm, the second polymer layer (P2) comprises polyethylene and has a layer thickness of from about 70 to about 80 μm, and the barrier layer (BS) comprises aluminium and has a layer thickness of from about 8 to about 12 μm; and
(ii) a bleaching agent composition, which is contained in the package; wherein

the bleaching agent composition comprises
a percarbonate that is sodium percarbonate, where

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Erkens Udo
• Lechner Torsten

Classifications

• A61K2800/87

  Application Devices; Containers; Packaging · CPC title

• A45D19/0066

  Coloring or bleaching · CPC title

• A61K8/38

  Percompounds, e.g. peracids · CPC title

• A61K2800/48

  Thickener, Thickening system · CPC title

• A61Q5/08

  Preparations for bleaching the hair · CPC title