JP2002226335A - Acidic hair dye composition for hair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair dye composition for the hair good in dyeing ability and rinsability and smooth in touch after applied. SOLUTION: This hair dye composition for the hair is characterized by containing (1) 0.05-5.0 wt.% of a sclerotium gum and (2) 0.1-15 wt.% of an acrylic/methacrylic 10-30C alkyl ester copolymer and having pH 1.5-4.5.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to an acidic hair dye composition for hair that satisfies the essential conditions as an acidic hair dye such as dyeability, detergency, and stability, while improving the feel after use. It is.

[Prior art]

Conventionally, acid hair dyes are acid dyes and alcohols (in most cases, benzyl alcohol is used).
There are commercially available products containing, as main components, an organic solvent and an acid of a pH adjuster, and a thickener for preventing the sagging from hair during use. However, when the pH adjuster is 1.5 to 4.5 (preferably in this range in order to obtain good dyeing properties and detergency, the average is around 3), it is necessary to use a considerably strong acidic side. Thickeners used under such conditions are rather limited. Among them, xanthan gum is known as an effective one as a thickener (Japanese Patent Publication No. 2-32253) (Japanese Patent Application Laid-Open (Kokai)). However, conventionally known hair dyes containing xanthan gum have poor fluidity,
When applied to the head after being taken with a hand, comb, or brush, it is difficult to hang down or spread on the hair as a lump.
For this reason, it was difficult to obtain a satisfactory dyeing property.

As a means for solving the above problems, a combination use of xanthan gum and an acrylic acid / alkyl methacrylate copolymer (Japanese Patent No. 3072506) is known. However, in the case of this combination, if the rinsing treatment is insufficient, if the cationic surfactant is contained in the cosmetics for washing, such as rinsing and treatment, and the hair cosmetics used for setting the hair, the activity will be reduced. The agent and the acrylic acid / alkyl methacrylate copolymer are combined and aggregated to make them look like dandruff on the hair, and the texture after use is not yet satisfactory enough to be satisfactory. Further improvement was desired.

[Problems to be solved by the invention]

An object of the present invention is to solve the drawbacks of the conventional acidic hair dyes and to provide an acidic hair dye composition having extremely excellent detergency, dyeing properties and texture after use.

[Means for Solving the Problems]

[0005] The present inventors have conducted various studies to solve the above-mentioned problems, and found that the above-mentioned problems were solved by using sclerotium gum and an acrylic acid / alkyl methacrylate copolymer in combination. It was possible to obtain the knowledge that it could be solved, and based on this knowledge, the present invention was completed.

Hereinafter, the present invention will be described in detail.

[0007] The sclertium gum used in the present invention is Sclerotium Rolfsii (fungi)
As a commercially available polysaccharide obtained from Alba
Examples include AMIGEL manufactured by Muller International Inc., and the amount of the compound is 0.05 to 5% by weight, preferably 0.1 to 2% by weight in the composition. If it is less than 0.05% by weight, dripping at the time of use cannot be sufficiently prevented, and if it is more than 5% by weight, elongation becomes poor and use becomes difficult.

On the other hand, as an acrylic acid / alkyl methacrylate copolymer having an alkyl group having 10 to 30 carbon atoms used in the present invention, PEMUREN TR-
1. PEMUREN TR-2 (BFGGood
and the amount of the compound is 0.1.
1 to 15% by weight, preferably 0.2 to 10% by weight
It is.

Examples of the acid used for adjusting the pH of the present invention include organic acids such as glycolic acid, lactic acid, acetic acid, tartaric acid, citric acid, and malic acid, and inorganic acids such as phosphoric acid, hydrochloric acid, and sulfuric acid. The compounding amount is set to a pH of the composition of 1.5 to
It is blended to be 4.5. Further, for the purpose of buffering the pH, the above salt, sodium hydroxide, potassium hydroxide,
Inorganic or organic alkaline agents such as monoethanolamine, triethanolamine and aminopropanol, basic amino acids such as arginine, and neutral amino acids such as alanine may be used.

The silicones used in the present invention include, for example, dimethylpolysiloxane, methylphenylpolysiloxane, cyclic octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, epoxy-modified silicone, carboxy-modified silicone, amino Modified silicone, methyl hydrogen polysiloxane, fluorine-modified silicone and the like are exemplified, and one or more of these may be appropriately selected and used as needed.

The hair dye composition for hair of the present invention includes, in addition to the above, acid dyes, alcohols, organic solvents and the like. Hereinafter, these constituent substances will be described.

As the dye used in the present invention, a statutory dye permitted to be used for coloring pharmaceuticals, quasi-drugs and cosmetics which does not show harmful effects on the human body is extremely effective. Is desirably 0.01 to 2.0% by weight. When the composition of the present invention is used as a hair dye composition which is also used as a rinse, the amount is suitably 0.001 to 0.5% by weight.

The alcohols used in the present invention are not particularly limited, and known alcohols conventionally used in acidic hair dye compositions for hair can be widely used. Specifically, n-butyl alcohol, sec
Aliphatic alcohols (poorly soluble in water), aromatic alcohols and polyhydric alcohols composed of -butyl alcohol, cyclohexanol, butyl cellosolve, benzyl alcohol, 2-phenoxyethanol and phenylethanol, and are selected from these groups. At least one alcohol can be blended in an amount of 3 to 15% by weight.

Further, the organic solvent used in the present invention includes:
Cyclic ketones and ethers such as tetrahydrofurfuryl alcohol, N-methylpyrrolidone and ethylene carbonate, methyl / ethyl: cellosolve, methyl / ethyl:
Examples include polyhydric alcohols such as carbitol, 1,3-butylene glycol, propylene glycol, and dipropylene glycol, and ethanol, and 5 to 40% by weight of at least one organic solvent selected from these groups is blended. Further, when silicones are used, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, polyethylene sorbite fatty acid ester as a dispersing / solubilizing agent thereof, Nonionic surfactants such as sorbitan fatty acid esters, anionic surfactants, and amphoteric surfactants may be used. Further, the hair dye of the present invention has system stability, p
As long as H is not impaired, thickeners, hydrocarbons, oils and fats, esters, higher alcohols, preservatives, chelating agents, fragrances, and the like can be added in addition to the above components.

The hair dye composition of the present invention can be formed into a desired form as long as the effects of the present invention are not impaired. For example, it is in the form of an emulsion or cream, and can be made into an aerosol formulation by combining a propellant gas.

【The invention's effect】

According to the present invention, compared to the conventional acidic hair dye composition for hair, the hair acidic composition which is excellent in spreadability (ease of conformity) when applied to hair, detergency, dyeing properties, texture after use, and the like is excellent. A hair dye composition, ie, an acidic hair dye, is provided.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, the present invention will be described more specifically with reference to examples.
The present invention is not limited to the following embodiments.

【Example】

Examples 1 and 2 and Comparative Examples 1 to 3 An acidic hair dye composition for hair as shown in Table 1 below was prepared.

[0019]

[Table 1]

The adjustment was performed as follows. That is, components other than the dye are added to purified water, and the mixture is stirred and dissolved. The dye is added thereto, and an appropriate amount of a pH adjuster (glycolic acid) is added to adjust the pH to 3.0. A liquid was obtained.

The following tests were performed using each of these hair dyes.

1) Whitening test Nail polish base is uniform (20 mm square, 25 μm thick)
m), and then immersed in a 10% aqueous shampoo solution (water temperature: 35 ° C.) for 10 minutes. Then 10
Soak in% treatment aqueous solution. Then, the degree of whitening of the portion with the nail polish base was observed.

2) Dyeing test [0023] Each of the above hair dyes was uniformly applied to the entire white bleached hair,
After leaving it for about 15 minutes in a thermo-hygrostat at 65 ° C and 65% PF,
Wash thoroughly with warm water. Thereafter, the hair was washed with shampoo and water, and the dyeing property of the hair after drying with a dryer was visually evaluated.

3) Texture The same operation as in the above test 2) was performed, and a sensory test was performed on the obtained dried hair. Table 2 shows the results of the evaluation.

[0025]

[Table 2]

Evaluation Whitening A: Not white. Δ: slightly white. ×: White. Dyeing ability ：: The color becomes darker and darker. ：: Orange color is exhibited. Δ: A slightly pale orange color is exhibited. X: The color becomes lighter and darker. Texture ○: Suppleness and comb-like are good. Δ: Slightly supple, but poor combing. ×: There is no flexibility, and comb street is poor.

From the results in Table 2, the hair dye of the present invention is
It can be seen that, compared to a hair dye containing a conventional thickener, the hair is very excellent in terms of spreading to hair, detergency, dyeing properties, and texture.

Claims (2)

[Claims] (1) 1) adding sclerlotium gum to 0.05 to
5.0% by weight and (2) an alkyl group having 10 to 30 carbon atoms
A hair dye composition comprising 0.1 to 10% by weight of an acrylic acid / alkyl methacrylate copolymer having a pH of 1.5 to 4.5. (2) 1) Sclerothium gum is added in an amount of 0.05 to
5.0% by weight and (2) an alkyl group having 10 to 30 carbon atoms
A patent characterized by containing 0.1 to 15% by weight of an acrylic acid / alkyl methacrylate copolymer, and further comprising one to two or more silicones in a total amount of 0.01 to 5.0% by weight. The hair dye composition according to claim 1.