JP6161111B2 - Hair dye - Google Patents

Description

  The present invention relates to a non-aqueous hair dye having a high brightness and a good hair coloring effect when a non-aqueous cream-like hair dye and an oxidizing agent are mixed and applied to the hair at the time of use. Is.

  2. Description of the Related Art Conventionally, as a method for dyeing hair brightly, a two-component oxidative hair dye that is used by mixing a first agent containing an oxidative dye and an alkaline agent and a second agent containing hydrogen peroxide at the time of use. Is common. By applying an oxidative hair dye to the hair, the melanin pigment in the hair can be decolored and the oxidative polymerization reaction of the oxidative dye can proceed simultaneously to obtain the desired brightness and color tone, which is widely used as a fashionable dye. ing.

  The desired color tone and density can be obtained mainly by the combination of the concentration of the oxidation dye and the oxidation dye contained in the first agent. Further, the desired brightness, that is, the decolorization effect of the melanin pigment can be adjusted mainly by the concentration of the alkane agent in the first agent and the concentration of hydrogen peroxide in the second agent. However, since the hydrogen peroxide concentration in the second agent of oxidative hair dye is regulated by the Pharmaceutical Affairs Law to be 6% or less, there is a limit to the adjustment of the brightness with hydrogen peroxide, mainly the adjustment of the brightness Is influenced by the concentration of the alkaline agent.

However, even if various alkaline agents are blended excessively in the first agent as a hair dye, only brightness of 8 levels or less can be obtained, and in beauty work, it is more than the brightness obtained by the above treatment method. In addition, there are cases where a brighter finish of 9 or more brightness is required, but the present situation is that the demand cannot be fully met. The lightness of the hair is based on the level scale unit of the Japan Hair Color Association, and the same applies to the lightness display hereinafter. In addition, adding an excessive amount of alkaline agent for the purpose of finishing the lightness at 9 or more levels not only impairs the stability of the first agent, but also increases the irritation to the scalp and causes problems such as hair damage. become.

  On the other hand, there are powder-like and cream-like bleaching agents for the purpose of finishing hair with high lightness, and as a method of finishing to 9 levels or more, JP 2002-302427 A discloses inorganic peroxidation represented by ammonium persulfate. Hair decoloring treatment agent that can obtain desired high lightness by mixing a first agent containing a product and an alkali agent and a second agent containing hydrogen peroxide (oxidant) at the time of use. Is disclosed.

However, the problem of the invention described in JP-A-2002-302427 is that when a depigmenting agent is applied to hair, it is possible to decolorize the melanin pigment and finish it at a high brightness of 9 levels or more. The hair cannot be dyed.
For example, when an oxidation dye is included in the decolorizing agent, the inorganic peroxide compounded in the decoloring agent (first agent) is mixed as a solvent in the second agent by mixing the first agent and the second agent at the time of use. When dissolved in the blended water, the oxidative strength of the oxidative dye that exists in the same system becomes stronger and the oxidative polymerization reaction of the oxidative dye does not react inside the hair, but proceeds rapidly on the outside of the hair and polymerizes. In addition to being difficult to penetrate into the hair, the hair cannot be dyed during the treatment because the oxidized dye decomposes the polymer colored by the oxidative polymerization reaction. Therefore, in order to dye hair with a lightness of 9 levels or more, it is necessary to perform a hair dyeing process after decolorizing the melanin pigment in the hair. This will increase the time pain and burden on the scalp.

  Japanese Patent Application Laid-Open No. 8-239313 discloses a hair dye composition containing a percarbonate or other peroxide, which has only an oxidizing power for oxidative polymerization, and thus As with hair dyeing, it is difficult to finish the lightness of the hair to 9 levels or more. In addition, when the agent is in a powder form, depending on the type of the pigment, there are problems that it is difficult to dissolve during use and that it is easily scattered.

JP 2002-302427 A JP-A-8-239313

  The present invention solves the conventional problems as described above, mixes a non-aqueous cream hair dye and an oxidant at the time of use, and applies them to the hair to achieve a high lightness and good hair dyeing effect. It is an object to provide a non-aqueous hair dye.

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention comprises an oxidizing agent composition containing at least 4.5% or more of a non-aqueous cream hair dye and hydrogen peroxide at 1: 1 to A hair dye used by mixing at the time of use at a mixing ratio of 1: 3, wherein the non-aqueous cream hair dye contains the following components (a) to (c): Agent.
(A) 10-20 mass% of anhydrous sodium metasilicate
(B) ammonium sulfate, ammonium chloride, monoammonium phosphate, diammonium phosphate, triammonium phosphate, ammonium acetate, diammonium citrate, triammonium citrate, ammonium carbonate, which are anhydrous ammonium salts of inorganic or organic acids , 3 to 15% by mass of any one or more of ammonium oxalate, ammonium tartrate and ammonium nitrate
(C) 0.01-0.5 mass% of oxidation dye
Is a summary.

  The invention according to claim 2 of the present invention is characterized in that the hair dye according to claim 1 is characterized in that 1 to 10% by weight of anhydrous silicic acid is contained in the non-aqueous cream hair dye. Is.

According to the first aspect of the present invention, the first non-aqueous cream hair dye contains anhydrous sodium metasilicate and one or more anhydrous ammonium salts of inorganic or organic acids. This prevents the melanin pigment from being discolored by the oxidizing power of hydrogen peroxide contained in the oxidizer composition mixed at the time of use without disturbing the coloration of the oxidative dye present in the same system in the hair, resulting in a finished lightness. Hair can be dyed at 9-13 levels.
That is, anhydrous sodium metasilicate and anhydrous ammonium salt of inorganic acid or organic acid contained in the non-aqueous cream hair dye dissolve in the water in the oxidizing agent composition containing hydrogen peroxide, Ammonia is produced and functions as an alkaline agent. When it is applied to the hair, decolorization and hair dyeing proceed simultaneously.
The effect of decolorization is milder than normal decolorizing agents, and has less influence on hair and scalp. In addition, it is possible to finish with a high brightness of 9 to 13 levels brighter than 8 levels or less, which can be decolored with a normal hair dye. Furthermore, since the non-aqueous cream-like hair dye according to the present invention does not contain the peroxide usually blended in the decoloring agent, it does not hinder the coloring of the contained oxidative dye, and the hair Can be dyed.

  According to invention of Claim 2 of this invention, anhydrous silicic acid sodium of Claim 1 and an inorganic acid or organic are contained by making silicic acid anhydride contain in the non-aqueous cream-like hair dye of the 1st agent. Acid anhydrous ammonium salts can be kept stable over time.

The first non-aqueous cream hair dye of the present invention contains anhydrous sodium metasilicate and an anhydrous ammonium salt of an inorganic acid or an organic acid in the same system. In addition, it is necessary to dissolve the oxidative dye contained in the liquid as soon as it is mixed with the second agent, and it is necessary to dissolve it in advance for the oxidative polymerization reaction with hydrogen peroxide. There is sex. Therefore, a non-aqueous base material is absolutely essential.
For this reason, hydrogen peroxide contains at least 4.5% of non-aqueous cream containing anhydrous sodium metasilicate, one or more anhydrous ammonium salts of inorganic acid or organic acid, anhydrous silicic acid and oxidation dye in the first agent. % Or more of the oxidizer composition contained at the time of use acts on the hair.

  The mixing ratio of the non-aqueous cream hair dye (first agent) and the oxidizing agent composition (second agent) containing at least 4.5% or more of hydrogen peroxide in the present invention is 1: 1 to 1. : 3. If the mixing ratio is less than 1: 1, high brightness of 9 to 13 levels cannot be achieved. If the mixing ratio is 1: 4 or more, not only the hair coloring effect is weakened, but also high brightness of 9 to 13 levels can be achieved. Can not.

  The anhydrous sodium metasilicate contained in the first non-aqueous cream hair dye of the present invention is prepared by mixing the first agent and the second agent containing hydrogen peroxide at the time of use. Anhydrous sodium metasilicate dissolves in the water in the agent to produce sodium hydroxide. The produced sodium hydroxide is more basic than the anhydrous ammonium salts of inorganic or organic acids that dissolve in the water in the second agent, and therefore undergoes a substitution reaction to generate ammonia. The alkaline substance produced by a series of reactions reacts with hydrogen peroxide in the second agent to promote hair decolorization. The decolorization effect is a high brightness with a finished brightness of 9 to 13 levels, which is superior to the effect of a general oxidative hair dye. Furthermore, it is milder than the effect of the decoloring agent contained in the inorganic peroxide.

  Content of the said anhydrous sodium metasilicate is 10.0-20.0 mass%, Most preferably, it is 15.0-20.0 mass%. If the content is less than 10.0% by mass, the brightness of the 9th to 13th levels cannot be finished. If the content exceeds 20.0% by mass, the stability of the non-aqueous cream hair dye is poor. In addition, high brightness of 14 levels or more is not obtained, and unnecessarily increasing the content is not economically preferable.

The anhydrous ammonium salt of the inorganic acid or organic acid contained in the non-aqueous cream hair dye of the first agent in the present invention is the anhydrous meta-acid contained in the non-aqueous cream hair dye of the first agent. It reacts with sodium hydroxide derived from sodium silicate to produce ammonia, opens the hair cuticle to facilitate internal penetration of the mixture, and facilitates the generation of oxygen from the oxidant. . Then, such non-aqueous chestnut - and specific examples of the anhydrous ammonium salt of an inorganic or organic acid in a beam-like hair dye, ammonium sulfate, ammonium chloride, monoammonium phosphate, diammonium phosphate, triammonium phosphate , Ammonium acetate, diammonium citrate, triammonium citrate, ammonium carbonate, ammonium oxalate, ammonium tartrate, ammonium nitrate and the like, and one or more selected from these can be used in combination.
Content of the anhydrous ammonium salt of the inorganic acid or organic acid contained in a non-aqueous cream hair dye is 3.0-15.0 mass%, Most preferably, it is 5.0-10.0 mass. %. If the content is less than 3.0% by mass, high brightness of 9 to 13 levels cannot be achieved, and if the content exceeds 15.0% by mass, the stability of the non-aqueous cream hair dye However, not only high brightness of 14 levels or more is not obtained, but it is not economically preferable to increase the content unnecessarily.

The oxidative dye contained in the first non-aqueous cream hair dye of the present invention is a compound that can develop color by oxidative polymerization with the oxidant in the second agent, and specifically, intermediates and couplers. Classified as-.
Specific examples of the intermediate include phenylenediamines and salts thereof, aminophenols and salts thereof, diaminopyridines and salts thereof, and the salts include hydrochloride, sulfate, acetate, and the like. Can be mentioned. Among these, it is desirable to use paraphenylenediamine, toluene-2,5-diamine, paraaminophenol and salts thereof having high dyeing power, and these can be used alone or in combination.

  On the other hand, specific examples of couplers that develop color in combination with intermediates include resorcin, pyrogallol, catechol, metaaminophenol, metaphenylenediamine, orthoaminophenol, 2, 4 -Diaminophenol, 1.2.4-benzenetriol, toluene-3,4-diamine, toluene-2,4-diamine, hydroquinone, α-naphthol, 2,6-diaminopyridine, 1, 5-dihydroxynaphthalene, 5-aminoorthocreol, diphenylamine, paramethylaminophenol, 2,4-diaminophenoxyethanol, gallic acid, ethyl gallate, methyl gallate, propyl gallate, tannic acid, Pentaploid, 1-methoxy-2-amino-4- (2-hydroxyethyl) aminobenzene, 5- (2-hydroxy) Chiruamino) -2-methylphenol - le, etc. These salts. A coupler can be used 1 type or in combination of 2 or more types.

  The content of the oxidation dye is preferably 0.01 to 0.5% by mass. When the content of the oxidative dye is less than 0.01% by mass, the hair dyeing effect is weakened, and when the content exceeds 0.5% by mass, the dyeing to the hair is strong and the brightness is 8 levels or less. It is not finished to 13 levels of high brightness.

  As other dyes in the first non-aqueous cream hair dye of the present invention, direct dyes, HC dye amounts, and basic dyes can be contained. Direct dyes, HC dye amounts, and basic dyes have a coloring group in the coloring matter itself, which is different from the coloring mechanism of the previous oxidation dye, and can be dyed by penetrating or ionic bonding into the hair. Specific examples of other dyes include paranitro orthophenylenediamine, paranitrometaphenylenediamine sulfate, nitroparaphenylenediamine, picramic acid, dispersion black 9, HC blue 2, HC red 1, HC red 3, HC Red 7, HC Orange 1, HC Orange 2, HC Yellow 2, HC Yellow 4, HC Yellow 9, HC Purple 1, HC Purple 2, 2-amino-6-chloro-4-nitrophenol, 2-amino-3 -Nitrophenol, 4-amino-3-nitrophenol, 4-hydroxypropylamino-3-nitrophenol, hydroxyanthraquinoneaminopropylmethylmorphonium methosulfate, 3-methylamino-4-nitrophenoxyethanol- 2-nitro-5-glycerylmethylaniline, 3-nitro-p-hydroxyethylaminophenol, basic 99, basic blue 75, basic brown 16, basic brown 17, basic red 76, basic red 51, basic yellow 57, basic yellow 87, basic orange 87, red 213, etc. Species or two or more types can be used in combination.

  To contain anhydrous sodium metasilicate and anhydrous ammonium salts of inorganic or organic acids contained in the first non-aqueous cream hair dye of the present invention in the same system in a stable state over time A non-aqueous cream base is required. At this time, fluidity hydrocarbons or fluidity esters with little change over time are used as the components to be used, and the hardness of the thickened non-aqueous cream is easy to mix with the second agent containing the oxidizing agent. There is a need to adjust to. Generally, components such as waxes, waxes or dextrin palmitate can be used as thickeners to thicken fluid hydrocarbons or fluid esters to form a cream. When the non-aqueous cream base material prepared in this manner contains the above anhydrous sodium metasilicate and anhydrous ammonium salt, the non-aqueous cream base material changes remarkably over time.

  Therefore, the anhydrous sodium metasilicate contained in the first non-aqueous cream hair dye of the present invention and the anhydrous ammonium salt of inorganic acid or organic acid are contained in the same system in a stable state over time. Silicic anhydride is most desirable as a thickening component for providing a non-aqueous cream base material with little change over time. In addition, it is desirable that the non-aqueous cream hair dye is adjusted to a viscosity that can be easily mixed with two agents containing an oxidizing agent when anhydrous hydrocarbons are used to thicken hydrocarbons or esters. The content of anhydrous silicic acid is preferably 1.0 to 10.0% by mass. When the content of anhydrous silicic acid is less than 1.0% by mass, the expected viscosity cannot be obtained, and anhydrous sodium metasilicate and inorganic acid or organic contained in the first non-aqueous cream hair dye of the present invention. The uniformity of the anhydrous ammonium salts of acids cannot be obtained. In addition, when the content of silicic anhydride is 0.0% by mass or more, the viscosity becomes strong, and mixing with the two components which are the oxidizing agent composition cannot be facilitated.

  Specific examples of hydrocarbons and esters that thicken using silicic anhydride include liquid paraffin, α-olefin oligomer, liquid polyisobutylene, squalane, squalene, pristane, isopropyl myristate, myristic acid. Butyl, isopropyl palmitate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl caprylate, hexyl laurate, decyl myristate, decyl oleate, isostearyl laurate, isotridecyl myristate, myristic acid 2 -Hexyldecyl, isostearyl myristate, 2-octyldodecyl myristate, 2-ethylhexyl paritate, isocetyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyl stearate Sildecyl, isodecyl oleate, 2-octyldodecyl oleate, octyldodecyl ricinoleate, ethyl isostearate, isopropyl isostearate, cetyl octoate, stearyl octoate, hexyl isostearate, ethylene glycol dioctanoate, ethylene dioleate Glycol, propylene glycol dicaprylate, di (capryl / capric) propylene glycol, propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, diethylhexanoic acid Neopentyl glycol, glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl tri (capryl / capric acid), glyceryl triisopalmitate, triisostearate Lyceryl, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, pentaerythritol tetramyristate, pentaerythritol tetraisostearate, neopentane 2-octyldodecyl acid, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldecyl dimethyloctanoate, isopalmitate 2 -Ethylhexyl, 2-hexyldecyl isostearate, isostearyl isosterate, 2-octyldodecyl isosterate, lauryl lactate, 2-octyldodecyl lactate, triethyl citrate, acetyl citrate Triethyl, acetyl tributyl citrate, tri-2-ethylhexyl citrate, triisoethyl citrate, tri-2-octyldodecyl citrate, isostearyl malate, di-2-ethylhexyl succinate, isopropyl adipate, di-2-ethylhexyl adipate, sebacine Diethyl acetate, isopropyl sebacate, di-2-ethylhexyl sebacate, dibutyloctyl sebacate, isocetyl 12-stearoylhydroxystearate, stearyl 12-stearoylhydroxystearate, isostearyl 12-stearoylhydroxystearate, polyoxyethylene acetate (3 And monooxypropylene cetyl ether, polyoxyethylene acetate (3) monooxypropylene isocetyl ether and the like.

In addition, a water-soluble polymer, an alkanolamine, a nonionic surfactant, or the like may be appropriately blended with the non-aqueous cream hair dye to such an extent that the effects of the present invention are not impaired. Specific examples of the water-soluble polymer include acrylic acid / alkyl methacrylate copolymer, carboxyvinyl polymer, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, xanthan gum, hydroxypropyl Xanthan gum and the like.
Specific examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, and monoisopropanolamine.
Specific examples of nonionic surfactants include polyoxypropylene (1) coconut oil fatty acid monoisopropanolamide, polyoxyethylene coconut oil fatty acid monoethanolamide, polyoxyethylene (15) beef tallow fatty acid monoethanolamide. Oleic acid diethanamide, coconut oil fatty acid dietanolamide, coconut oil fatty acid dietanolamide (2), palm kernel fatty acid fatty acid diethylamine (1), and modified coconut oil fatty acid dietanolamide.

  Next, the present invention will be specifically described with reference to examples. However, this invention is not limited only to those Examples. The content is expressed in mass% unless otherwise specified.

Examples 1-2 and Comparative Examples 1-6
The non-aqueous cream hair dye of the 1st agent and the oxidizing agent composition of the 2nd agent were prepared with the composition shown in Table 1.

Next, about the hair dye of the said Examples 1-2 and Comparative Examples 1-6, the dyeing property and the decoloring test which are shown below were evaluated.
<Test method>
1 g of human black hair and 1 g of white hair were bundled, washed with a 2% aqueous sodium lauryl sulfate solution, sufficiently washed with water, allowed to stand overnight at room temperature, and dried to obtain each test hair bundle. . The 1st agent and 2nd agent of Table 1 were mixed by the ratio of 1: 2, and 2.5 g of liquid mixtures were uniformly apply | coated to the test hair | bristle bundle by brush. Next, the hair bundle was allowed to stand for 30 minutes in a constant temperature bath at 30 ° C., and then the hair bundle was thoroughly washed with water and washed with a commercial shampoo, and then a commercial treatment was applied and washed with water. Furthermore, after drying using a dryer, the dyeability of black and white hair and the decolorizing power of black hair were evaluated by 10 professional panelists according to the following evaluation criteria.
[Evaluation 1] About dyeing property A: Dyeing property is good.
○: Dyeing property is almost good.
Δ: Slightly poor dyeability
X: Dyeing property is bad.
[Evaluation 2] Decolorizing power (measured by the level scale of the Japan Hair Color Association)
A: 9 to 13 levels.
○: 8.5 level or more to less than 9 level Δ: 8 level or more to less than 8.5 level
X: Less than 8 levels.

  The evaluation results of the dyeing property test and the decolorization test are shown in Table 2 below.

  As is clear from the evaluation results of Table 2 above, the non-aqueous cream hair dyes of Examples 1 and 2 of the present invention are (a) 10 to 20% by mass of anhydrous sodium metasilicate, and (b) inorganic. 1 to 2 or more anhydrous ammonium salts of acids or organic acids, and (c) 0.01 to 0.5% by mass of an oxidative dye. It can be seen that the dyeing property is good and the decolorizing power is excellent.

  On the other hand, as is apparent from the evaluation results in Table 2 above, the general emulsion type hair dye seen in Comparative Example 1 has a decolorization power of less than 8 levels compared to Examples 1 and 2, and is very inferior. You can see that In addition, in terms of dyeability, the reason for the result that the dark hair was weakly dyed even though white hair was dyed was that the decolorizing power of Comparative Example 1 was weaker than that of Examples 1 and 2, and a slightly dark finish. Therefore, it can be seen that the dyeing property is slightly poor.

  Further, in Comparative Examples 2 and 3, the content of ammonium sulfate is less than 10% although the content of ammonium sulfate is contained in the upper limit of 3 to 15% by mass shown in claim 1 or more. Therefore, it can be seen that the alkalinity is lowered, the expected decoloring power is less than 8 levels, the decoloring power is inferior, and the black hair dyeability is poor.

  Furthermore, in Comparative Examples 4 and 5, the content of anhydrous sodium metasilicate satisfies 10 to 20% by mass and the alkalinity is equal to or higher than that of Example 1 or 2, but the expected decoloring power is obtained. It is not done. Since the content of ammonium sulfate is less than 3 to 15% by mass, the substitution reaction of sodium hydroxide obtained from anhydrous sodium metasilicate with ammonium sulfate is not performed sufficiently when mixed with the second agent, and decolorization occurs due to less generation of ammonia. The force is less than 8.5 level, and it can be seen that the black hair dyeing property is slightly poor and inferior. In addition, the black hair dyeing property is the same as the results of Comparative Examples 1 to 3, which is weak.

  On the other hand, Comparative Example 6 is a non-aqueous cream hair dye containing ammonium persulfate, which is a peroxide, and exhibits a decolorizing power equivalent to 9 to 13 levels as compared with Examples 1 and 2. It is understood that is superior. However, due to the strong oxidizing power of ammonium persulfate, the oxidative polymerization reaction of the contained oxidative dye proceeds rapidly on the outside of white hair and black hair and becomes polymerized, making it difficult to penetrate into the hair and causing poor hair dyeability. I understand that.

  From the results of the above dyeing property and decoloring ability test, the non-aqueous cream hair dye of the present invention can dye hair at the same time while decolorizing the hair to 9 to 13 levels of high brightness. Is.

Claims (2)

A hair dye which is used by mixing a non-aqueous cream hair dye and an oxidizing agent composition containing at least 4.5% hydrogen peroxide at a mixing ratio of 1: 1 to 1: 3 at the time of use. The non-aqueous cream hair dye contains the following components (a) to (c).
(A) 10-20 mass% of anhydrous sodium metasilicate
(B) ammonium sulfate, ammonium chloride, monoammonium phosphate, diammonium phosphate, triammonium phosphate, ammonium acetate, diammonium citrate, triammonium citrate, ammonium carbonate, which are anhydrous ammonium salts of inorganic or organic acids , 3 to 15% by mass of any one or more of ammonium oxalate, ammonium tartrate and ammonium nitrate
(C) 0.01-0.5 mass% of oxidation dye The hair dye according to claim 1, wherein the non-aqueous cream hair dye contains 1 to 10% by weight of silicic anhydride.