JPH10245327A - Hair dye composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition showing good dyeing characteristics, fade-proofness or the like by including an acid dye or natural dye, aromatic alcohol and glycolic acid, and by using it in a specific pH range and buffer capacity range. SOLUTION: This composition contains (A) 0.01 to 2wt.% of an acid dye (e.g. nitro dye) or natural dye (e.g. carotenoid- or anthraquinone-based dye), (B) 0.5 to 20wt.% of an aromatic alcohol (e.g. benzyl alcohol) and (C) 0.1 to 20wt.% of glycolic acid and its salt (e.g. ammonium salt of glycolic acid) as the buffer agent, wherein a 10% aqueous solution of the hair dye composition is adjusted at pH 2.0 to 7.5 and buffer capacity (concentration of a base needed to increase pH level of the 10% aqueous solution of the hair dye composition from the initial level by 1 at 25 deg.C) at 0.01g-equivalents/1 or more but less than 0.5g-equivalents/1, to obtain the objective composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dyeing composition for hair dyeing, and more particularly, to a hair dyeing composition which has little discoloration, has no migratory property, and has a vivid dyeing color. In addition, the present invention relates to a hair dye composition which is excellent in hair dyeability, suppleness and combability of hair after hair dyeing.

[0002]

2. Description of the Related Art Hair dyes containing acid dyes and natural dyes are widely used at home and in beauty salons because they have less damage to hair than other hair dyes. However, when the acid dye hair dye is applied to the hair and then washed away with shampoo, the washing liquid has an unpleasantly unpleasant dye color, and the dye solution adheres to the towel or pillow cover after shampooing, or causes perspiration or perspiration. It has the disadvantage that when hair is wet due to rainfall, it is transferred to clothing and the like. In addition, there is a disadvantage that a vivid color tone cannot be obtained particularly with black hair.

[0003] In order to improve such disadvantages as dyeing property and colorfastness, specific acid dyes are used, and glycolic acid and / or pyrrolidone carboxylic acid and / or their alkali metal salts and alkaline earths are used. A hair dye composition using a combination of a metal salt and an amine salt has also been proposed (JP-A-6-2).
No. 98630), which is not yet satisfactory in terms of transferability.

[0004] Further, as a hair dye composition for making gray hair inconspicuous by using it many times in a usage method such as a hair rinse, an organic solvent, a polyhydric alcohol, an acid dye,
A hair dye composition containing an acid has been proposed (Japanese Patent Application Laid-Open No. 5-221840). However, in order to obtain a sufficient hair dyeing effect, it is necessary to use the hair dye many times. Inferior and not yet satisfactory in terms of hair dyeing effect and transferability.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the drawbacks of conventional hair dyes using acid dyes and natural dyes, significantly reduces the color of the shampoo washing solution during hair dyeing, It does not transfer to clothes and skin, such as pillowcases and pillows, provides vivid colors, and has excellent dyeing properties, and has excellent flexibility, smoothness, and combability after dyeing hair. It is intended to provide a hair dye composition.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventor has found that acid dyes and natural pigments can be prevented from discoloring into a washing solution, and can be transferred to clothes and the like. In order to obtain a vivid color tone even with black hair by using acid dyes and natural pigments by using glycolic acid and its salts as buffering agents and blending a specific aromatic alcohol in the hair dye In order to impart a rich texture to the treated hair, to further suppress discoloration to the dyeing liquor, and to prevent dye transfer to towels, clothing, bedding, etc., the pH is 2.0 to
7.5, buffer capacity 0.01-0.5 gram equivalent /
The inventors have found that this problem can be solved by being 1, and completed the present invention.

That is, according to the present invention, (A) an acid dye or a natural pigment is 0.01 to 2% by weight (B) an aromatic alcohol is 0.5 to 20% by weight (C) glycolic acid and a salt thereof 0.1 A hair dye comprising a pH of 2.0 to 7.5 and a buffer capacity of 0.01 g / l or more and less than 0.5 g / l. A composition is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION As the acidic dye which is a component of the hair dye composition (A) of the present invention, nitro dye, azo dye, nitroso dye, triphenylmethane dye, xanthine dye,
Examples include quinoline dyes, anthraquinone dyes, indigo dyes, and the like.
No. 2, Red No. 104, Red No. 105, Red No. 106, Yellow No. 4, Yellow No. 6, Green No. 3, Blue No. 1, Blue No. 2, Red No. 201, Red No. 227, Red No. 220, Red No. 230
No. Red No. 231, Red No. 232, Orange No. 205, Orange No. 207, Yellow No. 202, Yellow No. 203, Green No. 201
No., green 204, green 206, blue 202, blue 203, blue 205, brown 201, red 401
No., Red No. 602, Red No. 503, Red No. 504, Red No. 506, Orange No. 402, Yellow No. 402, Yellow No. 403
No. 406, yellow 407, green 401, green 402, purple 401, black 401, and the like. Among them, preferred acid dyes from the viewpoint of hair dyeing power,
Yellow 4, Green 204, Red 2, Red 102, Green 3, Blue 1, Blue 205, Yellow 403, Red 106, Red 201, Orange 205, Black 401
No. 201, green No. 201 or purple No. 401, especially black 4
No. 01, purple No. 401, orange No. 205, yellow No. 403 or red No. 106 are particularly preferred. These acid dyes can be used alone or in combination of two or more.

[0009] Examples of the natural dyes as component (A) include carotenoids, anthraquinones, flavonoids (anthocyanins, chalcones, flavones), porphyrins, diketones, betacyanines, azophylons and the like. , Specifically, Akane pigment, annatto pigment, publica pigment, gardenia yellow pigment, extracted carotene, cochineal pigment, lac pigment, red cabbage pigment, perilla pigment, purple corn pigment, elderberry pigment, Boysenberry pigment, grape skin pigment, Grape juice pigment, purple yam pigment, safflower yellow pigment, safflower red pigment, kouryan pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, chlorophyll, turmeric pigment,
Bee red, red yeast red pigment, red yeast yellow pigment, gardenia blue pigment, gardenia red pigment and the like are used. Among them, from the viewpoint of the dyeing power, a red pigment, a publica pigment, a cochineal pigment, a lac pigment, a kullang pigment, an onion pigment, a cacao pigment, a sandalwood pigment, a gardenia blue pigment, a gardenia red pigment and the like are preferable. These natural pigments can be used alone or in combination of two or more.

The amount of the acid dye is 0.01 to 2% by weight based on the total weight of the hair dye composition, but is preferably 0.02 to 1.0% by weight from the viewpoint of hair dyeing power and cost. When the amount of the acid dye is less than 0.01% by weight, the hair dyeing effect is not sufficiently exerted. When the amount exceeds 2% by weight, the degree of hair dyeing is good, but it is erroneously attached to skin or clothing. Sometimes, it is not preferable because it is difficult to remove.

The aromatic alcohol which is the component (C) of the hair dye composition of the present invention includes a compound represented by the following general formula (1).

Embedded image (R ₁ is a hydrogen atom, a methyl group or a methoxy group, R ₂ is -C
H ₂ OH group, -CH ₂ CH ₂ OH group, -CH (CH ₃₎ OH
Group, -CH ₂ CH ₂ CH ₂ OH groups, -C (CH _{3) 2} OH groups,
-CH ₂ CH (CH ₃₎ OH _{group, -CH (CH 3) CH 2} OH
Represents groups, -CH = CHCH ₂ OH group, a -OCH ₂ CH ₂ OH. Specific examples of these aromatic alcohols include benzyl alcohol, phenethyl alcohol, γ-phenylpropyl alcohol, cinnamon alcohol, anis alcohol, p
-Methylbenzyl alcohol, α-dimethylphenethyl alcohol, α-phenylethanol, phenoxyethanol, etc., and benzyl alcohol is preferably used in view of the effect.

The amount of the aromatic alcohol is 0.5 to 20% by weight, more preferably 5 to 12% by weight of the composition.
It is. If the amount is less than 0.5% by weight, a sufficient effect for coloring the hair cannot be obtained, and if it exceeds 20% by weight, stickiness or a smell peculiar to an aromatic alcohol occurs, and it is difficult to withstand use.

The glycolic acid and its salt, which are the component (C), function as a buffer. Examples of the glycolic acid salt include an ammonium salt, a sodium salt, a potassium salt, and triethanolamine, and these salts may be used alone or in combination of two or more. Among these, it is desirable to use an ammonium salt of glycolic acid in view of the absence of dye transfer to the towel, clothing, and bedding by the hair after the hair dyeing treatment, and the manifestation of the hair dyeing effect.

In the present invention, it is necessary to use glycolic acid as the organic acid having a buffering action.
Acids other than glycolic acid, such as citric acid, succinic acid,
Even if an organic acid such as lactic acid or malic acid is used, it is difficult to obtain a sufficiently satisfactory dye, and it is difficult to give a rich texture to the hair after dyeing, thereby achieving the intended object of the present invention. Can not do.

The amount of component (C) is 0.1 to 20% by weight, preferably 2 to 15% by weight, based on the total weight of the hair dye composition. If the amount is less than 0.1% by weight, sufficient buffering capacity cannot be obtained, the hair dyeing effect becomes low, and
If the content exceeds 0% by weight, it is difficult to maintain the buffering capacity, and the component (C) undesirably affects the hair such as "creaking".

The pH (measured as a 10% aqueous solution) of the hair dye composition of the present invention is 2.0 to 7.5, more preferably 2.5 to 7.0. When the pH is less than 2.0, irritation to the hand skin by the acid component becomes a problem.

The hair dye composition of the present invention has a buffer capacity of a 10% aqueous solution of the present composition of not less than 0.01 gram equivalent / l and less than 0.5 gram equivalent / l, preferably from 0.03 eq / l.
It must be 0.1 gram equivalent / l. Here, the buffer capacity in the present invention is a value obtained by the following equation using the base concentration as a scale for raising the pH of a 10% aqueous solution of the hair dye composition at 25 ° C. from the initial value by one.

[Number 1] buffer capacity = | dC _B / dpH | (wherein, C _B represents an ion concentration (gram equivalent / l of a base) the buffering capacity is vividly hair to be less than 0.01 gram equivalent When the buffering capacity is 0.5 g equivalent / l or more, the effect of dyeing the hair is not obtained, and the hair after dyeing has a rich texture. I can't give it.
Adjustment of H can be performed using an organic acid, an inorganic acid or a salt thereof, or an alkali. Examples of the organic acid include citric acid, succinic acid, tartaric acid, lactic acid, fumaric acid, malic acid, levulinic acid, butyric acid, valeric acid, oxalic acid, maleic acid, fumaric acid, mandelic acid, and the like. Examples thereof include phosphoric acid, sulfuric acid, and nitric acid. As the alkali, for example, sodium hydroxide, potassium hydroxide, calcium hydroxide, monoethanolamine, diethanolamine, triethanolamine, aminodihydroxymethylpropanediol,
Examples thereof include 2-amino-2-methyl-1-propanol and 2-amino-2-methyl-1,3-propanediol. Furthermore, it is also preferable to use a basic amino acid such as arginine. Furthermore, these acids and alkalis can coexist to use, for example, the sodium, potassium, ammonium and triethanolamine salts of the above-mentioned acids.

The hair dye composition of the present invention contains various surfactants, cationic polymers, oily components, thickeners such as hydroxyethylcellulose and xanthan gum, and silicone derivatives as long as the effects of the present invention are not impaired. Fragrances, preservatives, ultraviolet absorbers, antioxidants, bactericides and the like. Here, examples of the surfactant include anionic surfactants such as olefinsulfonic acid, alkanesulfonic acid, fatty acid alkyl ether carboxylic acid, and N-acyl amino acid;
Any of amphoteric surfactants such as amidobetaine, carbobetaine, and hydroxysulfobetaine; cationic surfactants such as mono- or dialkyl quaternary ammonium salts; and nonionic surfactants such as polyoxyalkylene alkyl ether can be used. . Examples of the cationic polymer include cationized cellulose, cationized starch, cationized guar gum, diallyl quaternary ammonium salt polymer, diallyl quaternary ammonium salt / acrylamide copolymer, and hydroxyethyl cellulose dimethyl diallyl 4
Grade ammonium copolymer and the like. Examples of the oil component include fatty acid esters, linear or branched alkyl glyceryl ethers, and branched higher alcohols.

The hair dye composition of the present invention can be manufactured by a conventional method by mixing the above-mentioned components. The method of using the hair dye composition is to apply it to hair, leave it for 5 to 30 minutes, and then wash it off with shampoo.

[0020]

The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.

Examples 1 to 6 and Comparative Examples 1 to 4 Various compositions shown in Table 1 were prepared, and their hair coloring, transferability, suppleness and combability were evaluated according to the following evaluation criteria. Table 1 shows the results. [Degree of Hair Dyeing] 1 g of each of the compositions shown in Table 1 was uniformly applied to 1 g of dried goat hair bundles, and then left at room temperature for 15 minutes to shampoo. Thereafter, the hair was dried and the degree of hair dyeing (ΔE ^* ) was evaluated by the following method. The above dyed hair bundle,
Color difference meter (SPECTRO CO manufactured by Nippon Denshoku Industries Co., Ltd.)
L, a, b values were measured by LOR METER SE2000), the color difference (ΔE ^* ) from the undyed hair was determined, and the staining was evaluated. Note that ΔE ^* indicates that the larger the value, the better the staining.

(Equation 2) [Transferability] The goat hair was dyed in the same manner as above, washed with shampoo after leaving it, the hair bundle was put on a white towel, and the degree of dyeing of the towel after placing a 500 g weight for 5 minutes was evaluated organoleptically. Table 1 shows the results. The evaluation criteria are as follows. ◎ ・ ・ ・ Plain white ○ ・ ・ ・ If you look closely, you can see slight staining △ ・ ・ ・ Dyeing is seen, but the degree is light × ・ ・ ・ It is clearly stained and quite severe [Suppleness and comb Goat hair] In the same manner as described above, goat hair is dyed, left to wash with shampoo, air-dried, and evaluated for texture and combability. The results are shown in Table 1. ◎ ・ ・ ・ The texture is very supple and the comb is very good. ○ ・ ・ ・ The texture is supple and the comb is very good. Δ: The texture is not so supple and the comb is not good. ×: The texture is not supple and the comb is not good.

[0022]

[Table 1]

Table 1 shows that the product of the present invention shows a sufficient hair dyeing effect. Further, the product of the present invention was able to easily remove stains on the hand skin by washing with soap.

Examples 7 to 9 When the following compositions were used under conditions of 5 minutes (25 ° C.) from application to the hair to rinsing, the hair dyeing effect and the excellent tactile sensation on the hair can be seen at a glance. And good results were obtained. In addition, the preparation method of each composition was as described in Example 1.
And pH was 3.3. The buffer capacity of the compositions of Examples 7 and 8 was 0.06 eq / l.
And the buffering capacity of the composition of Example 9 was 0.11 gram equivalent / l.

Example 7 Ingredients Ingredients Amount (%) Ethanol 20 Benzyl alcohol 5 Glycolic acid 5 Black 401 0.004 Purple 401 0.005 Orange 205 0.009 Red 106 0.003 Hydroxyethyl cellulose 1.5 Strong ammonia water Appropriate amount Purified water Balance

Example 8 Ingredients Ingredients Amount (%) Ethanol 20 Benzyl alcohol 5 Glycol 7 Black 401 0.004 Purple 401 0.005 Orange 205 0.009 Red 106 0.003 Xanthan gum 1.5 Urea 2 0.0 Strong ammonia water Appropriate amount Purified water Balance

Example 9 Ingredients Ingredients Amount (%) Ethanol 20 Benzyl alcohol 5 Glycolic acid 5 Black 401 0.004 Purple 401 0.005 Orange 205 0.009 Red 106 0.003 Hexylene glycol 0 Hydroxyethyl cellulose 1.5 Strong ammonia water Appropriate amount Purified water Balance

[0028]

EFFECT OF THE INVENTION The hair dye composition of the present invention has good hair dyeing properties, has little discoloration during shampooing, has no transferability to clothing, skin, etc., and has hair after dyeing. Gives flexibility and excellent combability.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Megumi Yoshimoto 1-7-7 Honjo, Sumida-ku, Tokyo Inside Lion Corporation

Claims (1)

[Claims] (A) Acid dye or natural pigment 0.01
(B) aromatic alcohol 0.5 to 20% by weight (C) glycolic acid and its salt 0.1 to 20% by weight, pH 2.0 to 7.5, and buffer A hair dye composition having an activity of not less than 0.01 gram equivalent / l and less than 0.5 gram equivalent / l.