JP2013181032A - Two-pack hair dye or two-pack decolorant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-pack hair dye or a two-pack decolorant, each of which is composed of a first liquid containing an alkali agent and a second liquid containing an oxidizing agent, the two-pack hair dye or a two-pack decolorant each being composed of the first liquid and the second liquid which are both in liquid state and are easily mixed with each other, and each have a viscosity with which the first liquid and the second liquid do not sag and drip when applied by using user's own fingertips or hands.SOLUTION: Both of a first liquid and a second liquid are made to be in a liquid state, and to be easily mixed with each other, and a viscosity of 60,000-150,000 mPa s with which the first liquid and the second liquid do not sag and drip in use is obtained, by making the first liquid contain 25-50 wt.% of a nonionic surfactant, and the second liquid contain 0.1-10 wt.% of a polyoxyethylene polyoxypropylene alkyl ether.

Description

The present invention relates to a two-component hair dye or a two-component bleaching agent.

Conventionally, hair dyes and depigmenting agents are in the form of liquids or creams. Nowadays, foam-like products that are easier to apply than liquid and cream-like products and that have the advantage of less unevenness during application are spreading.

The dosage forms of hair dyes and depigmenting agents may be one-drug type or multi-drug type in which separately stored agents are mixed immediately before use.

The two-component hair dye or two-component decoloring agent that is widely used now consists of the first and second liquids that are stored separately, and is designed to be a low-viscosity liquid that can be easily mixed. However, it is necessary to mix and thicken the first liquid and the second liquid so that they do not sag during use.

In order to prepare a predetermined mixed viscosity, a mechanism for thickening and gelling by adding a certain amount of water to a surfactant has been conventionally employed. In this method, a surfactant is highly blended in advance in the first liquid, and a specific amount of water is blended in the second liquid, and the two liquids are mixed to increase the viscosity during use.

However, when a large amount of surfactant is blended in the first liquid, the first liquid itself will thicken if more than a certain amount of water is blended as other components, so ethanol, propylene glycol, glycerin, etc. instead of water It was necessary to add a lower alcohol or the like to maintain a liquid state.

In general, the two-component hair dye or the two-component decoloring agent contains 15 to 40% by weight of a surfactant and 5 to 30% by weight of a lower alcohol in the first solution. The viscosity of the second liquid is 10 to 1,500 mPa · s, and the viscosity when the first liquid and the second liquid are mixed is 100 to 20,000 mPa · s. (See Patent Document 1)

However, since it can be applied easily and easily in recent years, a method of applying a hair dye or a decoloring agent using its own fingertip or hand has been adopted. When applying by this method, the first liquid and the second liquid are used. When the viscosity when mixed with the liquid is within the above range, there is a problem that the liquid drops.

When applying a hair dye or a decoloring agent using one's fingertip or hand, the mixed viscosity of the two-component hair dye or the two-component decoloring agent is 60,000 mPa · s or more. There is no. However, if it exceeds 150,000 mPa · s, the ease of application is lost.

When both the surfactant for obtaining a viscosity that does not sag during use and the lower alcohol for maintaining the liquid state of the first agent are increased together, only the two components occupy the majority of the first agent. For this reason, if the stabilizer, alkali agent or hair dye blended in other is used, the amount of the oxidation dye or its solvent is limited, and sufficient stability, hair dyeing power, decoloring power, etc. cannot be obtained.

In this way, the first agent is kept in a liquid state, and the amount of the surfactant that does not drop the stability, hair dyeing power, decoloring power, etc. and does not sag during use is blended in the first agent. Has its limits. For this reason, it is conceivable to add a surfactant to the second agent. However, if the amount of the surfactant is increased, the second agent itself will thicken like the first agent, so a lower alcohol or the like is added. In addition, they have the problem of reducing the stability of the oxidant.

JP-A-11-199454

The present invention is a two-component hair dye or two-component decoloring agent comprising a first solution containing an alkaline agent and a second solution containing an oxidizing agent, and both the first and second solutions are liquid, An object of the present invention is to provide a two-component hair dye or a two-component decolorizing agent that can be easily mixed and has a viscosity that does not sag when applied using its own fingertip or hand.

As a result of intensive studies to solve the above problems, the present inventor, in a two-component hair dye or a two-component decoloring agent comprising a first solution containing an alkaline agent and a second solution containing an oxidizing agent, By blending polyoxyethylene polyoxypropylene alkyl ether with the second liquid, the liquid can be maintained without blending lower alcohol, etc., the first liquid and the second liquid can be easily mixed, and there is no dripping during use. It has been found that viscosity can be obtained, and the present invention has been completed.

According to the present invention, in the two-component hair dye or the two-component decoloring agent comprising the first solution containing the alkaline agent and the second solution containing the oxidizing agent, both the first and second solutions are liquid. It becomes easy to mix, and it becomes easy to increase the viscosity so that there is no dripping during use. Moreover, the compounding quantity of surfactant, a lower alcohol, etc. can be decreased rather than the conventional product. As a result, the stabilizer, alkali agent, oxidation dye, solvent, etc. in the first liquid, and the oxidant, etc. in the second liquid are added in an amount sufficient for hair dyeing and decolorization without impairing the stability. Can be blended.

The two-component hair dye or the two-component decoloring agent of the present invention comprises a first solution containing an alkaline agent and a second solution containing an oxidizing agent, and 25 to 25 nonionic surfactants are added to the first solution. 50 wt%, and the second liquid contains 0.1 to 10 wt% of polyoxyethylene polyoxypropylene alkyl ether.

Specific examples of the nonionic surfactant contained in the first liquid of the two-component hair dye or the two-component decoloring agent of the present invention include polyoxyethylene (hereinafter referred to as POE) alkyl ethers and POE alkyls. Phenyl ethers, POE polyoxypropylene (hereinafter referred to as POP) alkyl ethers, POE fatty acids, POE sorbitan fatty acid esters, POE castor oil, POE hydrogenated castor oil, POE sorbitol tetra fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid Examples include esters, polyglycerol fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides, N-alkyldimethylamine oxides, POE propylene glycol fatty acid esters, and the like.

Of these, POE alkyl ethers are preferred because they are resistant to alkaline agents. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, POE oleyl ether and POE octyldodecyl ether, among which POE oleyl ether and POE octyldodecyl ether are particularly preferable. Its content is 25.0-50.0% by weight, preferably 30.0-45.0% by weight. When it is less than 25.0% by weight, when mixed with the second liquid, the viscosity of the hair dye or decoloring agent that does not sag during use cannot be obtained, and when it exceeds 50.0% by weight, the first liquid If the amount of the lower alcohol for keeping the liquid is increased, the amount of the oxidation dye or its solvent is limited if it is added to other stabilizers, alkali agents, and hair dyes, and a sufficient amount cannot be added.

The POE / POP alkyl ether contained in the second liquid of the two-component hair dye or the two-component decoloring agent of the present invention is a nonionic surfactant that is resistant to acid and has little effect on the stability of the oxidizing agent. is there. Specific examples of the POE / POP alkyl ether include POE / POP lauryl ether, POE / POP cetyl ether, POE / POP stearyl ether, POE / POP decyl tetradecyl ether and POE / POP butyl ether, preferably POE / POP butyl ether. Decyl tetradecyl ether.

Further, as specific examples of POE · POP decyl tetradecyl ether, POE (10E.O.) POP (20P.O.) decyl tetradecyl ether, POE (12E.O.) POP (6P.O.) decyl tetradecyl ether Ether, POE (20E.O.) POP (6P.O.) decyltetradecyl ether, POE (24E.O.) POP (13P.O.) decyltetradecyl ether, POE (30E.O.) POP (6P .O.) Decyl tetradecyl ether, and the like, preferably POE (20E.O.) POP (6P.O.) decyl tetradecyl ether. Its content is 0.1 to 10.0% by weight, preferably 2.0 to 5.0% by weight. If it is less than 0.1% by weight, sufficient viscosity cannot be obtained when mixed with the first liquid, and if it exceeds 10.0% by weight, the viscosity increases when mixed with the first liquid. The second liquid itself also thickens and cannot maintain a liquid state.

The nonionic surfactant contained in the first liquid of the two-component hair dye or the two-component decoloring agent of the present invention preferably contains two or more different types, and one type has an HLB value of 9.0. The other one is preferably an HLB value of 16.0 or more. By containing lipophilic and hydrophilic nonionic surfactants, the compatibility of the first liquid is improved, and it becomes easier to mix with the second liquid, resulting in a viscosity that does not sag during use. It is done.

HLB is an index indicating a hydrophilic-lipophilic balance. In the present invention, a value calculated using the following equation by Oda and Teramura et al. Was used.
HLB = {(Σ inorganic value) / (Σ organic value)} × 10

Specific examples of the oxidizing agent contained in the second liquid of the two-component hair dye or the two-component decoloring agent of the present invention include hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, and potassium percarbonate. , Sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, strontium peroxide, sodium bromate, etc. Of these, hydrogen peroxide is particularly preferable.
These oxidizing agents may be blended singly or in combination of two or more.

The first liquid and the second liquid of the two-component hair dye or the two-component decoloring agent of the present invention are stored separately and both have a viscosity of less than 200 mPa · s, preferably less than 100 mPa · s. It can be transferred from the storage container to the mixing container without feeling stress, and the time required for mixing is short and easy. For example, when the first liquid and the second liquid are stored in a bottle container having a diameter of 10 mm or more, if both of the viscosities are liquids of less than 200 mPa · s, the liquid is transferred from the storage container to the mixing container without feeling stress. Hair dyes or decoloring agents that can be mixed in a short time are obtained. When the viscosity of both the first liquid and the second liquid is 200 mPa · s or more, it takes time to transfer from the storage container to the mixing container or to mix them.

Viscosity is measured 1 minute after rotating at 100 rpm with the RB80H viscometer (Toki Sangyo Co., Ltd.) using the H5 rotor (rotor code: 19) for the first and second liquids. Shall be. In addition, the viscosity when the first liquid and the second liquid are mixed is the same after the RB80H viscometer (Toki Sangyo Co., Ltd.) uses an H7 rotor (rotor code: 21) and is rotated at 5 rpm. It shall be measured after minutes.

You may mix | blend an alkaline agent with the 1st liquid of the 2 liquid type hair dye or 2 liquid type decoloring agent of this invention. Examples of the alkali agent include ammonia, alkanolamines (monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl -1,3-propanediol, etc.), organic amines (morpholine, guanidine, etc.), inorganic alkalis (sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, ammonium bicarbonate, etc.), basic amino acids (Arginine, lysine, etc.) and their salts. These alkaline agents may be blended singly or in combination of two or more.

In addition to the nonionic surfactant, the first and second liquids of the two-component hair dye or the two-component decoloring agent of the present invention may contain a cationic surfactant or an amphoteric surfactant. Good.

Specific examples of the cationic surfactant include lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, lauryl trimethyl ammonium bromide, cetyl trimethyl ammonium bromide, odor Stearyltrimethylammonium chloride, dicetyldimethylammonium chloride, dicocoyldimethylammonium chloride, dodecyldimethylethylammonium chloride, polyoxypropylenemethyldiethylammonium chloride, benzalkonium chloride, ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium, cetyltrimethylammonium saccharin , Stearyltrimethylammonium saccharin, etc. It is.

Specific examples of amphoteric surfactants include 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxydi Examples thereof include sodium salt, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, cocoamidopropyl betaine, lauryldimethylaminoacetic acid betaane, and lauramidopropyl betaine.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited only to these examples. All compounding amounts are in weight percent.

Prior to the examples, test methods and evaluation methods employed in each example will be described.

Hydrogen peroxide, which is an oxidizing agent for the hydrogen peroxide stability second liquid, is quantified by a quantification method described in Quasi-drug raw material standard 2006 (April 2006 issue, Yakuji Nippo). In this test method, the quantitative value (% by weight) immediately after the preparation of the second liquid was compared with the quantitative value (% by weight) over time of 3 months at 40 ° C., and the hydrogen peroxide remaining rate was stable. Evaluated. The remaining rate and evaluation criteria are as follows.
(Residual rate) (%) = (Quantitative value over time at 40 ° C. for 3 months) / (Quantitative value immediately after production) × 100
<Evaluation criteria>
◎: Very good Residual rate 99% or more ○: Good Residual rate 98% or more and less than 99% △: Normal Residual rate 96% or more and less than 98% ×: Bad Residual rate less than 96%

Presence / absence of dripping at the time of application The first liquid and the second liquid shown in Examples and Comparative Examples are shaken and mixed at the mixing ratios shown in Tables 1 to 4, and the obtained hair dye or decoloring agent is used. 15 g was applied to a hair bundle made of Chinese black hair (weight 5 g, length 15 cm), suspended vertically for 30 minutes, and the presence or absence of dripping of the agent and the movement of the agent on the hair bundle were observed and observed. The evaluation criteria are as follows.
<Evaluation criteria>
◎: Very good No dripping and no movement of the agent on the hair bundle ○: Good There is no dripping, but the agent on the hair bundle moves to the lower part Δ: Normal There is dripping of less than 2 g ×: Bad 2 g There is more dripping

Ease of application The first liquid and the second liquid shown in Examples and Comparative Examples are mixed by shaking at the mixing ratios shown in Tables 1 to 4, and about 3 g of the obtained hair dye or decoloring agent is obtained. Apply to the fingertip and apply to a hair bundle (weight 5g, length 15cm) consisting of Chinese black hair. It was applied to 20 subjects and evaluated. The evaluation criteria are as follows.
<Evaluation criteria>
◎: Very good 18 or more people answered easy to apply ○: Good 12 to 17 people answered easy to apply △: Normal 6 to 11 people said easy to apply ×: Bad 5 or less people Replied that it was easy to apply

Examples 1-10, Comparative Examples 1-8
The 1st liquid and 2nd liquid which were shown in Examples 1-10 and Comparative Examples 1-8 were shake-mixed by the mixing ratio similarly shown in Tables 1-4, and the hair dye or the decoloring agent was prepared. Each hydrogen peroxide stability, presence or absence of dripping at the time of application, and ease of application were evaluated, and the results are shown in Tables 1 to 4.

As is clear from Tables 1 and 2, the hair dye or decoloring agent of the present invention was excellent in all items of hydrogen peroxide stability, presence or absence of dripping during application, and ease of application. On the other hand, from Tables 3 and 4, Comparative Example 1 in which the surfactant was not added to the second liquid had a low mixing viscosity, the presence or absence of dripping at the time of application, and the ease of application were inferior. In Comparative Example 2 in which a large amount of the surfactant was blended, the viscosity was high, the mixing viscosity was high, and the ease of application was poor. Comparative Examples 3 and 4 in which the type of the activator of the second liquid was different from that of the present invention had a low mixing viscosity, and were inferior in hydrogen peroxide stability, ease of application, and the presence or absence of dripping during application. Comparative Example 5 having a small amount of the activator of the first liquid had a low mixing viscosity, was not dripped during application, and was inferior in application. In Comparative Example 6 in which the amount of the activator of the first liquid was large, the first liquid itself had a viscosity and could not be maintained in a liquid state, and the mixing viscosity was high and the ease of application was poor. In Comparative Examples 7 and 8, in which the HLB value of the activator of the first liquid is different from that of the present invention, which is 9.0 or more and less than 16.0, the mixing viscosity is low, the presence or absence of dripping at the time of application, The ease of use was inferior.

Example 11
A two-component hair dye for hair having the following composition was prepared, and the first and second solutions were mixed at a ratio of 1: 1 for evaluation.
(First liquid)
Ingredient Amount (wt%)
1) Oxidative dye 0.30
2) POE (2) oleyl ether 20.00
3) POE (25) octyldodecyl ether 20.00
4) Palm oil fatty acid diethanolamide 5.00
5) Stearyltrimethylammonium chloride 3.00
6) Oleyl alcohol 5.00
7) Liquid isoparaffin 3.00
8) Fragrance 0.50
9) L-ascorbic acid 1.00
10) Edetate tetrasodium tetrahydrate 0.20
11) Soy protein hydrolyzate 0.50
12) Hydrolyzed silk solution 0.50
13) Taurine 0.50
14) Ammonia water (25%) 6.00
15) Ethanol 20.00
16) Purified water Appropriate amount of manufacturing method Components 2-8 are heated and melted at 80 ° C., and components 1, 9-16 are mixed and dissolved, and then mixed. Subsequently, it cooled, stirring to room temperature, and obtained the liquid 1st liquid.

(Second liquid)
Ingredient Amount (wt%)
1) POE (20) POP (6) decyl tetradecyl ether
5.00
2) Hydroxyethanediphosphonic acid 0.10
3) Sodium dihydrogen phosphate 0.25
4) Disodium hydrogen phosphate 0.10
5) Hydrogen peroxide solution (35%) 16.60
6) Purified water An appropriate amount of manufacturing method Component 1 is heated and melted at 80 ° C., and components 2 to 4 and 6 are heated and melted at 80 ° C. and mixed. Subsequently, it cooled, the component 5 was added at 40 degreeC, and it cooled, stirring to room temperature, and obtained the liquid 2nd liquid.

Example 12
A two-component decolorizing agent for hair having the following composition was prepared, and the first and second solutions were mixed at a ratio of 1: 1 for evaluation.
(First liquid)
Ingredient Amount (wt%)
1) POE (2) oleyl ether 20.00
2) POE (25) octyldodecyl ether 20.00
3) Coconut oil fatty acid diethanolamide 5.00
4) Stearyltrimethylammonium chloride 3.00
5) Oleyl alcohol 5.00
6) Liquid isoparaffin 3.00
7) Fragrance 0.50
8) Tesodium edetate tetrahydrate 0.20
9) Soy protein hydrolyzate 0.50
10) Hydrolyzed silk solution 0.50
11) Taurine 0.50
12) Ammonia water (25%) 9.00
13) Ethanol 20.00
14) Purified water Appropriate amount of manufacturing method Components 1 to 8 are heated and melted at 80 ° C., and components 8 to 14 mixed and dissolved are added and mixed. Subsequently, it cooled, stirring to room temperature, and obtained the liquid 1st liquid.

(Second liquid)
Ingredient Amount (wt%)
1) POE (20) POP (6) decyl tetradecyl ether
3.00
2) Hydroxyethanediphosphonic acid 0.10
3) Sodium dihydrogen phosphate 0.25
4) Disodium hydrogen phosphate 0.10
5) Hydrogen peroxide solution (35%) 16.60
6) Purified water An appropriate amount of manufacturing method Component 1 is heated and melted at 80 ° C., and components 2 to 4 and 6 are heated and melted at 80 ° C. and mixed. Subsequently, it cooled, the component 5 was added at 40 degreeC, and it cooled, stirring to room temperature, and obtained the liquid 2nd liquid.

Examples 11 and 12 were excellent in all items of hydrogen peroxide stability, no dripping at the time of application, and ease of application.

Claims (4)

It consists of a first liquid containing an alkaline agent and a second liquid containing an oxidizing agent. The first liquid contains 25.0 to 50.0% by weight of a nonionic surfactant, and the second liquid contains polyoxyethylene polyoxy. A two-component hair dye or a two-component decoloring agent characterized by containing 0.1 to 10.0% by weight of propylene alkyl ether. The two-component hair dye or the two-component bleaching agent according to claim 1, wherein there are two or more kinds of nonionic surfactants contained in the first solution, and among the nonionic surfactants, A two-component hair dye or a two-component bleaching agent, wherein at least one has an HLB value of less than 9.0 and at least one has an HLB value of 16.0 or more. The two-component hair dye or the two-component bleaching agent according to claim 1 or 2, wherein the viscosity of the first and second solutions is less than 200 mPa · s. The two-component hair dye or the two-component hair dye according to any one of claims 1 to 3, wherein the viscosity when the first liquid and the second liquid are mixed is 60,000 to 150,000 mPa · s. Two-component decolorizing agent.