PACKAGING ARTICLE COMPRISING AN ENVELOPE AND AN ANHYDROUS DYE COMPOSITION COMPRISING A DIRECT DYE, USE OF THE SAME AND PROCESS FOR DYEING KERATIN FIBRES

Abstract

The present invention relates to a packaging article comprising: i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres; ii) at least one anhydrous dye composition containing at least one direct dye; and iii) optionally at least one anhydrous oxidizing agent; it being understood that the dye composition ii) and the anhydrous oxidizing agent iii), when it is present, are in one of the cavities defined by the envelope i). Another subject of the invention is the use of the said article for dyeing keratin fibres and a process for dyeing keratin fibres using the said article. The use of the packaging article makes it possible to obtain dye compositions whose consistency is pleasant on use, which are easy to apply and which make it possible to obtain powerful colouring of the hair.

Claims

1.-22. (canceled)

23. A packaging article comprising: i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibers; ii) at least one anhydrous dye composition comprising at least one direct dye; and iii) optionally at least one anhydrous oxidizing agent; wherein the anhydrous dye composition ii) and the oxidizing agent iii), when it is present, are in the at least one cavity defined by the envelope i).

24. The packaging article of claim 23, wherein the anhydrous dye composition and/or the anhydrous oxidizing agent are in paste or powder form.

25. The packaging article of claim 23, wherein the envelope i) comprises at least one water-soluble polymer chosen from natural, artificial, or synthetic water-soluble polymers.

26. The packaging article of claim 23, wherein the envelope i) comprises at least one water-soluble polymer chosen from polysaccharides.

27. The packaging article of claim 23, wherein the envelope i) comprises synthetic water-soluble polymers or PVA fibers.

28. The packaging article of claim 23, wherein the envelope i) is nonwoven.

29. The packaging article of claim 23, wherein the envelope i) comprises liposoluble polymer fibers.

30. The packaging article of claim 23, 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).

31. The packaging article of claim 23, wherein the envelope i) comprises from about 0.5% to about 20.0% by weight relative to the total weight of the packaging article.

32. The packaging article of claim 23, wherein the at least one direct dye is chosen from anionic, nonionic, or cationic direct dyes, or mixtures thereof.

33. The packaging article of claim 32, wherein the at least one direct dye is chosen from: acridines; acridones; anthranthrones; anthrapyrimidines; anthraquinones; azines; (poly)azos, hydrazono or hydrazones; azomethines; benzanthrones; benzimidazoles; benzimidazolones; benzindoles; benzoxazoles; benzopyrans; benzothiazoles; benzoquinones; bisazines; bis-isoindolines; carboxanilides; coumarins; cyanines; diazines; diketopyrrolopyrroles; dioxazines; diphenylamines; diphenylmethanes; dithiazines; flavonoids; fluorindines; formazans; indamines; indanthrones; indigoids and pseudoindigoids; indophenols; indoanilines; isoindolines; isoindolinones; isoviolanthrones; lactones; (poly)methines; naphthalimides; naphthanilides; naphtholactams; naphthoquinones; nitroaromatics; oxadiazoles; oxazines; perilones; perinones; perylenes; phenazines; phenoxazines; phenothiazines; phthalocyanines; polyenes/carotenoids; porphyrins; pyranthrones; pyrazolanthrones; pyrazolones; pyrimidinoanthrones; pyronines; quinacridones; quinolines; quinophthalones; squaranes; tetrazoliums; thiazines; thioindigos; thiopyronines; triarylmethanes, xanthenes; or mixtures thereof.

34. The packaging article of claim 23, comprising at least one chemical oxidizing agent iii), chosen from a) urea peroxide, b) polymer complexes that can release hydrogen peroxide; c) perborates; or d) percarbonates.

35. The packaging article of claim 23, further comprising at least one ingredient chosen from alkaline agents iv); ammonium salts v); liquid fatty substances vi); thickening polymers vii); surfactants viii), or cationic or amphoteric substantive polymers ix).

36. The packaging article of claim 23, 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 dye composition comprising at least one direct dye; 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 dye 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; ii) at least one anhydrous dye composition comprising at least one direct dye; and iii) optionally at least one anhydrous oxidizing agent; wherein the anhydrous dye composition ii) and the oxidizing agent iii), when it is present, are 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 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

[0591] I) The following compositions were prepared. The values are expressed as grams of active material for a composition total of 100 grams.

TABLE-US-00003 A1 A2 Composition A (INCI US) (reference) (invention) 2-Oleamido-1,3-octadecanediol 0.01 Kaolin 44.17 3-Methylamino-4-nitrophenoxyethanol 0.1 1.11 2-Nitro-5-glycerylmethylaniline 0.6 6.67 HC Violet No. 1 0.2 2.22 1-Amino-3-methyl-4(2-hydroxyethylamino)-6- nitrobenzene HC Blue No. 2 1.2 13.33 1--hydroxyethylamino-2-nitro-4-bis-(- hydroxyethyl)aminobenzene HC Violet No. 2 0.6 6.67 3-[4-[bis-(2-hydroxyethyl)-amino]-2-nitro- phenylamino]-propan-1-ol HC Red No. 3 0.03 0.33 1-(-hydroxyethyl)-amino-2-nitro-4- aminobenzene Polyaminopropyl biguanide 0.5 Iodopropynyl butylcarbamate 0.2 Glycol distearate 1 Mangifera indica (mango) seed oil 0.1 Fragrance 0.4 Cellulose gum 0.3 Xanthan gum 0.5 Acrylates/C.sub.10-30 alkyl acrylate crosspolymer 5 Hydroxyethyl carboxymethyl 3.45 cocamidopropylamine Laureth-12 9.35 Hydroxyethyl oleyl dimonium chloride 1.41 Sodium lauryl sulfate 20 pH agent qs pH 6.7 Water qs 100 Nonwoven of polyvinyl alcohol 0.5 (PVA) fibres with a mean diameter of about 10 microns

II) Protocol for Preparing the Compositions and the Packaging Article

[0592] Composition A1 is prepared conventionally by mixing the ingredients.

[0593] The packaging article is prepared in two stages: in a first stage, the powdered ingredients are selected, including the direct dyes. The mixture of the powdered ingredients is then homogenized. In a second stage, the envelope is prepared from PVA fibres which 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).

[0594] The mixture of the powdered ingredients is then introduced between the two PVA laps of the disc, and the gaping part is then hermetically closed to form a packaging article weighing 3.3 g.

III) Protocol for Evaluating the Technical Effect of the Said Compositions

[0595] The packaging article of the invention is mixed with water in a 1/9 (mass/mass) ratio in a bowl or a heating bottle.

[0596] The mixture is applied to the hair, with a leave-on time of 30 minutes.

[0597] The hair is rinsed and is then shampooed, and the hair is then dried.

[0598] The hair is dyed in the ranges of colours conventionally obtained with the direct dyeing products.

Results of the Evaluation:

[0599]

TABLE-US-00004 Mixture M M1 (reference) M2 (invention) Mixture A1 Single-dose A2 mixed with tap water in a 1/9 ratio Colour result candied chestnut candied chestnut

[0600] The water-soluble packaging article does not in any way change the colouring quality of the keratin fibres when compared with the reference. In particular, in terms of intensity and chromaticity, the colouring results are very satisfactory. Furthermore, the application and localization of the compositions is easy and very pleasant, and does not go outside the areas to be treated. It should be noted that the process is very easy since it is a matter of dissolving the packaging article, which in the present case is in the form of a capsule, in water. It was also observed that the colour obtained is very uniform from the root to the end of the hairs.

IV) Comparative Data Film Vs. Fiber

[0601] The following compositions were prepared. The values are expressed as grams of active material for a composition total of 100 grams.

TABLE-US-00005 A1 A2 (comparative) (invention) Ingredients Amount Amount Kaolin 57.88 57.88 Hydroxyanthraquinone aminopropyl 4.96 4.96 methyl morpholinium methosulfate HC Red No. 3 8.62 8.62 1-(-hydroxyethyl)-amino-2-nitro-4- aminobenzene HC Yellow No. 9 0.57 0.57 1-Methoxy-3-(-aminoethyl)amino-4- nitrobenzene, hydrochloride Basic Red 51 0.72 0.72 2-[((4-Dimethylamino)phenyl)azo]-1,3- dimethyl-1H-imidazolium chloride Acrylates/C.sub.10-C.sub.30 alkylacrylate 4.85 4.85 crosspolymer Polyvinyl alcohol [FILM] 3 (Solublon PVAL-Film Type GA 40 m) Polyvinyl alcohol [NON 3 WOVEN] fibres with a mean diameter of about 10 microns Sodium lauryl sulfate 19.4 19.4

[0602] The packaging article is prepared in two stages, in a first stage, the powdered ingredients are selected, including the direct dyes. The mixture of the powdered ingredients is then homogenized. In a second stage, the envelope is prepared from PVA which are in the form of two nonwoven laps (for invention) or film laps (for comparative) 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).

[0603] 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.

[0604] At the time of treatment each of composition A1 and A2 is mixed with water with the weight ratio of 10 parts of composition A1 and A2 for 90 parts of water in a bowl until total solubilisation of the ingredients and homogeneity of the mixture. Each mixture A1+water and A2+water is then applied on 90% natural white hair (90 NW) or permed white hair (90 PW) with a bath ratio of 10 g of mixture for 1 g of lock, with a leave-on time of 30 minutes at 27 C. The hair is rinsed and is then shampooed, and the hair is then dried.

[0605] The coloration is measured using a Minolta CM 3600 D spectrocolorimeter. The chromaticity is evaluated in the CIE L* a* b* system. In this L* a* b* system, L* represents the intensity of the colour, a* indicates the green/red colour axis and b* indicates the blue/yellow colour axis. The lower the value of L*, the darker or more intense the colour.

[0606] The value of chromaticity C* is calculated from the values of a*, b* according to equation (i) below:

C*={square root over (a*.sup.2+b.sup.*2)}(i)

[0607] The greater the value of C*, the better the chromaticity of the treated fibres.

Results on Intensity L* and Chromaticity C*

[0608]

TABLE-US-00006 Composition L* a* b* C* A1 (comparative) 32.11 21.02 1.1 21.05 A2 (invention) 29.87 23.31 0.09 23.31

[0609] The chromaticity and the intensity of the mixture A2+water according to the invention with fibers are significantly higher than that obtained with the film (A1+water).

Results on Selectivity

[0610] On the other hand, for evaluating the selectivity of the colour between the root and tip of the keratin fibre, measurement can be done on permed white hair (PW) and natural white hair, wherein the variation in colouring between the coloured locks PW and the coloured natural white hair as defined by E*, corresponding to the selectivity of the colour, is calculated according to the following equation:

E*={square root over ((L*L.sub.o*).sup.2+(a*a.sub.o*).sup.2+(b*b*.sub.o).sup.2)}

[0611] In this equation, L*, a* and b* represent the values measured after dyeing the natural hair comprising 90% of white hairs and L.sub.0*, a.sub.0* and b.sub.0* represent the values measured after dyeing the permed or sensitized hair. The lowest E* is the best homogeneity of the hair colour.

TABLE-US-00007 Composition Hair type L* a* b* E A1 (comparative) BN 32.11 21.02 1.1 5.59 BP 26.86 22.81 0.41 A2 (invention) BN 29.87 23.31 0.09 2.43 BP 27.52 22.85 0.49

[0612] The selectivity of the mixture A2+water according to the invention with fibers is significantly lower than that obtained with the film (A1+water) i.e. homogeneity of the color is significantly higher than the comparative one.