PROCESS FOR TREATING KERATIN FIBERS USING A PACKAGING ARTICLE COMPRISING AN ENVELOPE AND AN ANHYDROUS COMPOSITION COMPRISING AN OXIDIZING AGENT

Abstract

The present invention relates to a process for treating keratin fibers such as the hair using a packaging article comprising i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres, preferably water-soluble fibres; ii) at least one anhydrous oxidizing composition, preferably in paste or powder form, comprising at least one anhydrous chemical oxidizing agent, preferably in paste or powder form; it being understood that the oxidizing composition is in one of the cavities defined by the envelope i).

Claims

1.-23. (canceled)

24. A packaging article comprising: i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibers, preferably water-soluble fibers; ii) at least one anhydrous oxidizing composition comprising at least one chemical oxidizing agent; wherein the anhydrous oxidizing composition is in the at least one cavity defined by the envelope i).

25. The packaging article of claim 24, wherein the anhydrous oxidizing composition is in paste or powder form.

26. The packaging article of claim 24, wherein the envelope i) comprises at least one water-soluble polymer chosen from natural, artificial, or synthetic water-soluble polymers.)

27. The packaging article of claim 24, wherein the envelope i) comprises at least one water-soluble polymer chosen from polysaccharides.

28. The packaging article of claim 24, wherein the envelope i) comprises synthetic water-soluble polymers or PVA fibers.

29. The packaging article of claim 24, wherein the envelope i) is nonwoven.

30. The packaging article of claim 24, wherein the envelope i) comprises liposoluble polymer fibers.

31. The packaging article of claim 24, wherein the envelope i) comprises at least one type of fiber chosen from spun, carded or twisted fibers, wherein the at least one type of fiber has a diameter of less than about 500 m and/or wherein the tensile strength of the at least one type of fiber is at least about 2.7 g/dtex (3 g/d).

32. The packaging article of claim 24, wherein the envelope i) comprises from about 0.5% to about 20.0% by weight relative to the total weight of the packaging article.

33. The packaging article of claim 24, wherein the chemical oxidizing agent is chosen from peroxygenated salts; oxidases that produce hydrogen peroxide in the presence of a suitable substrate; or mixtures thereof.

34. The packaging article of claim 24, wherein the article comprises at least one alkaline agent iii).

35. The packaging article of claim 24, wherein the article comprises at least one ingredient chosen from: ammonium salts iv; fatty substances v) thickening polymers vi); surfactants vii); or cationic or amphoteric substantive polymers viii).

36. The packaging article of claim 24, wherein the envelope i) comprises a first water-soluble or liposoluble lap and a second water-soluble or liposoluble lap joined together at a peripheral region; wherein the first lap comprises a free central region configured to face a free central region of the second lap; wherein the free central region of the first lap and the free central region of the second lap define the cavity; wherein the cavity comprises the oxidizing composition comprising at least one chemical oxidizing agent; wherein at least a portion of the peripheral region is closed.

37. The packaging article of claim 36, further comprising at least one third water-soluble or liposoluble lap, wherein the third lap at least partially defines at least one additional cavity, wherein least one other ingredient is present in the at least one additional cavity and separated from the anhydrous oxidizing composition.

38. The packaging article of claim 36, wherein the first lap and the second lap each have a thickness smaller than their other dimensions.

39. The packaging article of claim 36, wherein the first lap is a nonwoven and the second lap is a nonwoven; wherein at least one portion of the peripheral region of the first lap is substantially identical in shape to at least one portion of the peripheral region of the second lap.

40. A process for dyeing keratin fibers, the process comprising: mixing a packaging article with a composition that is capable of dissolving the packaging article to form a resulting composition, the packaging article comprising: i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibers, preferably water-soluble fibers; ii) at least one anhydrous oxidizing composition comprising at least one chemical oxidizing agent; wherein the anhydrous oxidizing composition is in the at least one cavity defined by the envelope i). applying the resulting composition to the keratin fibers; leaving the resulting composition on the keratin fibers; rinsing the keratin fibers; and optionally shampooing, rinsing, and/or drying the keratin fibers.

41. The process of claim 40, wherein the composition that is capable of dissolving the packaging article is an aqueous composition, or an organic composition comprising at least one liquid fatty substance.

42. The process of claim 40, wherein the composition that is capable of dissolving the article comprises a chemical oxidizing agent.

43. The process of claim 40, wherein the weight ratio of the packaging article to the composition that is capable of dissolving the packaging article ranges from about 10/90 to about 50/50.

Description

EXAMPLES

Example 1

[0354] I) The following compositions were prepared. The values are expressed as grams of active material for a composition total of 100 grams.

Composition A

[0355]

TABLE-US-00001 Sorbitol 17 Ammonium sulfate 5 Sodium carbonate peroxide or sodium percarbonate 50 Sodium metasilicate 7.5 Liquid petroleum jelly 4 Carboxymethylcellulose sodium salt 5 Hydroxyethylcellulose 7.5 Sodium lauryl sulfate 1 Nonwoven of polyvinyl alcohol (PVA) fibres with a 3 mean diameter of about 10 microns

II) Protocol for Preparing the Compositions and the Packaging Article

[0356] The packaging article is prepared in two stages: in a first stage, the ingredients are selected. The mixture of the powdered ingredients is then homogenized. In a second stage, the envelope is prepared from PVA which is in the form of two nonwoven laps joined together at the periphery, but leaving a part gaping allowing the introduction of ingredients. This double lap is in the form of a disc (5 cm in diameter and 3 mm thick).

[0357] The mixture of the said powdered ingredients is then introduced between the two PVA laps of the disc, and the gaping part is then closed.

[0358] An article comprising composition A in single-dose form containing 21.6 g is prepared according to the method indicated above.

[0359] At the time of use, the article is mixed with 78.4 g of tap water.

[0360] The mixture is applied to pigmented natural hair with a leave-on time of between 5 minutes and 1 hour and preferably between 10 minutes and 40 minutes.

[0361] The hair is rinsed and is then optionally shampooed, shampooing preferably being performed, and the hair is then dried.

Example 2

[0362]

TABLE-US-00002 Composition B1 B2 Potassium persulfate 27.42 27.42 Hydroxypropylcellulose 0.91 0.91 PVP/H.sub.2O.sub.2 complex (Peroxydone XL-10 from 32.49 Ashland) Sodium carbonate peroxide or sodium 32.49 percarbonate Ammonium chloride 2.91 2.91 Sodium metasilicate 9.32 9.32 Nonwoven of polyvinyl alcohol (PVA) fibres 26.95 26.95 with a mean diameter of about 10 microns

[0363] Compositions B1 and B2 are prepared in the following manner:

[0364] In a first stage, the powdered ingredients, including the peroxygenated salts, the alkaline agents and the other chemical oxidizing agents, are selected. The mixture of the powdered ingredients is then homogenized. The PVA fibres (26.95 g per 73.05 g of pulverulent bleaching composition) are in the form of two nonwoven laps joined together at the periphery, but leaving a part gaping allowing the introduction of ingredients. This double lap is in the form of a disc (5 cm in diameter and 3 mm thick).

[0365] The mixture of the said powdered ingredients excluding the PVA is then introduced between the two PVA laps of the disc, and the gaping part is then closed.

[0366] Articles comprising each composition B1 and B2 in single-dose form containing 21.6 g are prepared according to the method indicated above.

[0367] At the time of use, each article is mixed with 78.4 g of water.

[0368] The mixture is applied to pigmented natural hair with a leave-on time of between 5 minutes and 1 hour and preferably between 10 minutes and 40 minutes.

[0369] The hair is rinsed and is then optionally shampooed, shampooing preferably being performed, and the hair is then dried.

[0370] The locks of pigmented hair are lightened by 1 to 2.5 tones depending on the starting hair (2.5 tones for natural chestnut-brown hair).

[0371] Furthermore, the application and localization of the compositions is easy and very pleasant, and the composition does not go outside the areas to be treated. It should be noted that the process is very easy to perform since it is a matter of dissolving the packaging article. Good bleaching of the hair is thus obtained, with great ease of use.

Example 3

[0372] The following composition according to the invention was prepared. The values are expressed as grams of active material for a composition total of 100 grams.

Composition C

[0373]

TABLE-US-00003 C PPG-1-PEG-9 LAURYL GLYCOL ETHER 4.4 ULTRAMARINES 0.5 AMMONIUM CHLORIDE 4.5 CALCIUM STEARATE 2 MAGNESIUM CARBONATE 2 POTASSIUM CARBONATE 2.3 EDTA 0.8 SODIUM METASILICATE 13.6 SODIUM LAURYL SULFATE 2 SILICA 4.2 POTASSIUM PERSULFATE 47 SODIUM PERSULFATE 10.9 GUAR GUM 1.8 POLOXAMER 182 1 CELLULOSE SHEET Dissolvo WLD60 3

[0374] In a first stage, the powdered ingredients, including the peroxygenated salts, the alkaline agents and the other chemical oxidizing agents, are selected. The mixture of the powdered ingredients is then homogenized. The cellulose sheet (3 g per 97 g of pulverulent bleaching composition) are in the form of two nonwoven laps joined together at the periphery, but leaving a part gaping allowing the introduction of ingredients. This double lap is in the form of a disc (5 cm in diameter and 3 mm thick).

[0375] The mixture of the said powdered ingredients is then introduced between the two cellulose laps of the disc, and the gaping part is then closed.

[0376] An article comprising composition C in single-dose form is prepared according to the method indicated above.

[0377] At the time of use, the article can be mixed with the following oxidizing composition D.

Composition D

[0378]

TABLE-US-00004 HYDROGEN PEROXIDE 3.9 ma PHOSPHORIC ACID qs PH 2.2 TETRASODIUM ETIDRONATE 0.06 ma TETRASODIUM PYROPHOSPHATE 0.04 SODIUM SALICYLATE 0.035 WATER Qs 100

Example 4

[0379] The following compositions were prepared. The values are expressed as grams of active material for a composition total of 100 grams.

TABLE-US-00005 E1 E2 Composition (comparative) (invention) UREA 3.88 3.88 SODIUM PERSULFATE 7.76 7.76 AMMONIUM CHLORIDE 4.365 4.365 POTASSIUM PERSULFATE 45.59 45.59 EDTA 0.97 0.97 SODIUM METASILICATE 11.64 11.64 MAGNESIUM OXIDE 0.97 0.97 KAOLIN 4.85 4.85 TITANIUM DIOXIDE 1.94 1.94 VP/VA COPOLYMER (PVP/VA S 1.746 1.746 630 L ISP) GUAR GUM 2.619 2.619 HYDROGENATED POLYDECENE 1.649 1.649 CETYL HYDROXYETHYL- 0.97 0.97 CELLULOSE STEARETH-100/PEG-136/HDI 2.91 2.91 COPOLYMER (RHEOLUXE 811 from ELEMENTIS) POLYVINYL ALCOHOL FILM 3 (Solublon PVAL-Film Type GA 40 m) Nonwoven of polyvinyl alcohol (PVA) 3 fibres with a mean diameter of about 10 microns SODIUM CETEARYL SULFATE 0.97 0.97 SODIUM LAURYL SULFATE 2.231 2.231 MAGNESIUM STEARATE 1.94 1.94

[0380] At the time of use, each composition E1 and E2 is mixed with the oxidizing composition D (as described in example 3): 33 parts of E1 or E2 for 67 parts of D, composition D is first poured in a bowl and formulas E1 or E2 are introduced. After 15 seconds, the compounds are mixed until solubilisation of all the ingredients to obtain an homogeneous mixture.

[0381] Each mixture is applied to locks of natural chesnut hair (TH4) (10 g of mixture for 1 g of hair).

[0382] The mixture is left at 27 C. for 30 minutes. The hair is then rinsed, optionally washed with a standard shampoo and dried.

[0383] The colorimetric measurements were carried out using a Minolta 3600D spectrocolorimeter (illuminant D65, angle 10, specular component included) in the CIELab system.

[0384] According to this system, L indicates the lightness. The lowest is the value of L, the most intense is the color of the hair.

[0385] E represents the difference of color between the locks before and after application of the bleaching composition. The highest is the value of E, the most important is the lightening.

[0386] The following results are obtained

TABLE-US-00006 [00002]

[0387] The mixture E2+B according to the invention allows to obtain higher L* and E values, i.e. a better lightening of the fiber, than the mixture E1+B (comparative).