JP7097097B2 - Two-agent simultaneous ejection type hair dye - Google Patents

Description

The present invention relates to a two-agent simultaneous ejection type hair dye.

The conventional cream-type hair dye does not cause any particular problem when the first agent containing an alkaline agent and the second agent containing an oxidizing agent are used separately, but the first agent and the second agent are used. When using by discharging at the same time at a predetermined discharge amount ratio, it is necessary to adjust the discharge amount of the first agent and the second agent, and considering that it is used by consumers, the first agent and the second agent are used. The discharge rate with the agent had to be stable from the beginning to the end of use.

However, in an aerosol container in which a creamy hair dye is simply filled in the inner bag of a pressure-resistant container having an inner bag, and a compressed gas is filled between the inner bag and the pressure-resistant container, from the beginning to the end of use. When the discharge amount of is evaluated, the discharge amount changes depending on the hair dye to be filled. Therefore, when using the first agent and the second agent at the same time at a predetermined discharge amount ratio, use from the beginning of use. In some cases, the first agent and the second agent could not be discharged at the same time at a predetermined discharge rate until the end.

In the conventional cream-type hair dye, the first agent and the second agent are put out on a tray or the like so as to have a predetermined mixing ratio, mixed properly with a comb or a brush, and then applied to the hair. When applying a two-agent simultaneous discharge type hair dye that is used by simultaneously discharging and the second agent at a predetermined discharge rate ratio, apply it directly to the hair after discharge, or after brushing it out. Since it is applied to the hair and the first agent and the second agent are mixed on the hair, uneven dyeing is caused if the first agent and the second agent are not discharged at the same time at a predetermined discharge rate. There was something.

Therefore, it has been proposed to prepare a stock solution having a stable discharge amount over time without changing the discharge amount by blending silicones with the first agent and / or the second agent (Patent Document 1).

Japanese Unexamined Patent Publication No. 2004-91356

In the present invention, in a two-agent simultaneous discharge type hair dye filled in an aerosol container having a mechanism for simultaneously discharging the first agent and the second agent, the first agent and the second agent are predetermined from the beginning to the end of use. It is an object of the present invention to provide a hair dye capable of easily and evenly dyeing hair by simultaneously discharging the hair at the ratio of the discharge amount of.

As a result of diligent studies to solve the above problems, the present inventor has found that the first agent is a two-agent simultaneous discharge type hair dye filled in an aerosol container having a mechanism for simultaneously discharging the first agent and the second agent. The viscosity of both the first agent and the second agent is 50,000 mPa · s or less, and the ratio of the viscosity of the first agent and the second agent is set to 0.8 to 1.2 for the first agent / second agent. As a result, it was found that there is little change in the discharge rate ratio between the first agent and the second agent from the beginning to the end of use, and stable discharge can be performed at the same time at a predetermined discharge rate ratio, and the present invention is completed. I came to let you.

According to the present invention, in a two-agent simultaneous discharge type hair dye filled in an aerosol container having a mechanism for simultaneously discharging the first agent and the second agent, the first agent and the second agent are used from the beginning to the end of use. Since the change in the discharge amount ratio of the hair is small and the hair can be stably and uniformly discharged at a predetermined discharge amount ratio, the hair can be dyed easily and evenly.

The discharge amount in the present invention is a weight, and the ratio is a weight ratio unless otherwise specified, and a predetermined discharge amount ratio between the first agent and the second agent can be arbitrarily set.

The two-agent simultaneous ejection type hair dye of the present invention comprises a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and the viscosities of the first agent and the second agent are both 50,000 mPa. It is characterized by being less than or equal to s. Considering the elongation after application to the hair and the sagging drop, it is preferably 5,000 to 25,000 mPa · s. If it exceeds 50,000 mPa · s, it becomes difficult to discharge the compressed gas from the container, so that the discharge amount becomes uneven and it becomes difficult to simultaneously discharge at a predetermined discharge amount ratio.

In addition, the viscosity is a TVB-10 type viscometer (Toki Sangyo) by adjusting the temperature of each agent discharged into separate containers for the first agent and the second agent of the two-agent simultaneous ejection type hair dye to 20 degrees. Co., Ltd.) SPINDLE NO. It is assumed that the measurement was performed 1 minute after rotating at 12 rpm using M4 (CODE NO.23).

The two-agent simultaneous ejection type hair dye of the present invention comprises a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and the viscosity ratio of the first agent and the second agent is the first. Agent / second agent = 0.8 to 1.2. It is preferably 0.9 to 1.1. When the viscosity ratio is less than 0.8, the viscosity of the first agent is lower than that of the second agent, so that the first agent can be easily discharged and the discharge amount of the first agent becomes large. When the viscosity ratio exceeds 1.2, the viscosity of the second agent is lower than that of the first agent, so that the second agent is easily discharged and the discharge amount of the second agent is increased. In this way, if there is a difference in the viscosity between the first agent and the second agent, there will be a difference in the discharge amount between the first agent and the second agent, and the ratio of the first agent and the second agent to the predetermined discharge amount. It becomes difficult to discharge at the same time.

The two-agent simultaneous ejection type hair dye of the present invention is characterized in that both the first agent and the second agent contain 0.1 to 10.0% by weight of higher alcohol.

Examples of the higher alcohol contained in the two-agent simultaneous ejection type hair dye of the present invention include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, araquil alcohol, behenyl alcohol, isostearyl alcohol, and oleyl alcohol. , 2-Hexyldecanol, 2-octyldodecanol and the like. Among these, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, araquil alcohol, and behenyl alcohol, which are linear saturated higher alcohols, are particularly preferable from the viewpoint of stability. Its content is 0.1 to 10.0% by weight, preferably 0.5 to 5.0% by weight. If it is less than 0.1% by weight, the stability of the agent over time such as separation will be affected, and if it exceeds 10.0% by weight, the viscosity of the agent will increase and it will be difficult to discharge the agent from the container with compressed gas or the like. Therefore, the discharge amount becomes uneven, and it becomes difficult to simultaneously discharge the first agent and the second agent at a predetermined discharge amount ratio.

A nonionic surfactant can be appropriately added to the two-agent simultaneous ejection type hair dye of the present invention. Examples of the nonionic surfactant include polyoxyethylene (hereinafter referred to as POE) alkyl ethers, POE alkylphenyl ethers, POE / polyoxypropylene (hereinafter referred to as POP) alkyl ethers, POE fatty acids, and POE. Solbitan fatty acid esters, POE castor oil, POE hardened castor oil, POE sorbitol tetra fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, alkyl polyglucoside, N-alkyldimethylamine oxide, POE Examples thereof include propylene glycol fatty acid ester.

Among these, POE alkyl ethers, POE alkylphenyl ethers, POE / POP alkyl ethers, and POE sorbitan fatty acid esters are preferable because they are resistant to acids and alkaline agents, and among these, POE alkyl ethers are particularly preferable. .. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, POE behenyl ether, POE oleyl ether and the like. Its content is 0.1 to 10.0% by weight, preferably 2.0 to 6.0% by weight. If it is less than 0.1% by weight, the stability of the agent over time such as separation will be affected, and if it exceeds 10.0% by weight, the viscosity of the agent will increase and it will be difficult to discharge the agent from the container with compressed gas or the like. Therefore, the discharge amount becomes uneven, and it becomes difficult to simultaneously discharge the first agent and the second agent at a predetermined discharge amount ratio. Further, the nonionic surfactant preferably contains two or more different types, one of which has an HLB value of less than 9.0, and the other of which has an HLB value of 13.0 or more.

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

Hydrocarbons can be appropriately added to the two-agent simultaneous ejection type hair dye of the present invention. Examples of the hydrocarbon include α-olefin oligomer, liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, petrolatum, polyethylene powder, zokerite, polybutene, selecin and the like. Of these, liquid paraffin, light isoparaffin, light liquid isoparaffin and liquid isoparaffin are particularly preferred from the standpoint of stability. Its content is 0.1 to 20.0% by weight, preferably 2.0 to 15.0% by weight. If it is less than 0.1% by weight, the stability of the agent over time such as separation will be affected, and if it exceeds 20.0% by weight, the viscosity of the agent will increase and it will be difficult to discharge from the container with compressed gas or the like. Therefore, the discharge amount becomes uneven, and it becomes difficult to simultaneously discharge the first agent and the second agent at a predetermined discharge amount ratio.

In addition to the two-agent simultaneous ejection type hair dye of the present invention, oxidative dyes, alkaline agents, oxidizing agents, silicones, waxes, animal and vegetable fats and oils, higher fatty acids, organic solvents or penetration promoters, polyhydric alcohols, etc. Esters, ethers, cationic surfactants, amphoteric surfactants, anionic surfactants, cationic polymers, anionic polymers, amphoteric polymers, protein derivatives and amino acids, preservatives, chelating agents, stabilizers, It is possible to appropriately blend antioxidants, pH adjusters, various plant extracts, dye extracts, vitamins, pigments, fragrances, ultraviolet absorbers and the like.

The two-agent simultaneous ejection type hair dye of the present invention can be used as a depigmenting agent when an oxidation dye is not blended.

The two-agent simultaneous ejection type hair dye of the present invention includes a double aerosol container described in JP-A-2004-91356 (Patent Document 1) and a double-structured aerosol described in JP-A-2005-231644. A container or the like can be used.

As the compressed gas used in the two-agent simultaneous ejection type hair dye of the present invention, for example, dimethyl ether, liquefied petroleum gas, nitrogen gas, alternative flone, etc., which are generally used for aerosol products, compressed air and the like can be used. I can. Among these, nitrogen gas is particularly preferable from the viewpoint of preventing deterioration.

In the two-agent simultaneous ejection type hair dye of the present invention, the initial internal pressure applied to the first agent and the second agent is preferably 0.3 to 0.8 MPa at 25 ° C. from the viewpoint of usability, and is preferably 0.4 to 0.8 MPa. It is more preferably 0.7 MPa. Further, the effect of the present invention can be further obtained by setting the ratio of the initial internal pressure applied to the first agent and the second agent to the first agent / second agent = 0.95 to 1.05.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. All blending amounts are% by weight.

Prior to the examples, the test method and the evaluation method adopted in each example will be described.

Simultaneous ejection properties Hair dyes were prepared according to the formulations described in Examples and Comparative Examples, and the ratio of the predetermined ejection amount of the first agent and the second agent was set to 1.0 for the first agent / second agent. The first interior pouch filled with 50 g of the first agent and the second interior pouch filled with 50 g of the second agent of the prepared undiluted solution were housed in one pressure-resistant container, and nitrogen gas was filled between the interior pouch and the pressure-resistant container. Measures the discharge amount (g / 10 seconds) of the first agent and the second agent from the start to the end of use of the two-agent simultaneous discharge type hair dye that has a mechanism to discharge the first agent and the second agent at the same time. Then, the ratio of the discharge amount of the first agent and the second agent was obtained. The evaluation criteria are as follows.
<Evaluation criteria>
⊚: Very good The ratio of the discharge amount (g / 10 seconds) of the first agent and the second agent from the start to the end of use is ± to the predetermined discharge amount ratio of the first agent and the second agent. Within 5% ○: Good The ratio of the discharge amount (g / 10 seconds) of the first agent and the second agent from the start to the end of use to the predetermined discharge amount ratio of the first agent and the second agent. Is ± 6 to 10%
Δ: Normally, the ratio of the discharge amount (g / 10 seconds) of the first agent and the second agent from the start to the end of use is ± 11 with respect to the predetermined discharge amount ratio of the first agent and the second agent. ~ 20%
×: Bad The ratio of the discharge amount (g / 10 seconds) of the first agent and the second agent from the start to the end of use is ± 21 with respect to the predetermined discharge amount ratio of the first agent and the second agent. Over%

Examples 1 to 13, Comparative Examples 1 to 5
The hair dyes shown in Examples 1 to 13 and Comparative Examples 1 to 5 were prepared. The simultaneous ejection properties of each were evaluated, and the results are shown in Tables 1 to 3.

As is clear from Tables 1 and 2, the two-agent simultaneous ejection type hair dye of the present invention was excellent in simultaneous ejection property. On the other hand, from Table 3, Comparative Examples 1 to 3 having a large viscosity difference between the first agent and the second agent, Comparative Example 4 having a high viscosity of the first agent and a large viscosity difference, and both the first agent and the second agent. Comparative Example 5, which has a high viscosity and a large difference in viscosity, was inferior in simultaneous ejection performance.

Example 14 (bleaching agent)
A decolorizing agent having the following composition was prepared, and the ratio of the predetermined discharge amount of the first agent and the second agent was set to 1.0 as the first agent / the second agent. The first agent pouch filled with 50 g of the first agent of the undiluted solution and the second interior pouch filled with 50 g of the second agent were stored in one pressure-resistant container, and nitrogen gas was filled between the interior pouch and the pressure-resistant container. We evaluated a two-agent simultaneous discharge type decolorizing agent that has a mechanism for simultaneously discharging the second agent and the second agent.
(First agent)
Ingredient content (% by weight)
1) Cetyl alcohol 5.00
2) Liquid isoparaffin 10.00
3) Liquid paraffin 5.00
4) Didimethylpolysiloxane 5.00
5) Polyoxyethylene stearyl ether 5.00
6) Stearyltrimethylammonium chloride (70%) 1.50
7) Stearic acid 0.50
8) Fragrance 0.50
9) Polydimethylmethylene piperidinium solution 1.00
10) Soy protein hydrolyzate 0.50
11) Hydrolyzed silk liquid 0.50
12) Ammonia water (25%) 6.00
13) Remaining amount of purified water
Total 100.00
Manufacturing method Ingredients 1 to 8 are heated and melted at 80 ° C., and components 9 and 13 are heated and melted at 85 ° C. and mixed. Then, cooling was performed while stirring, components 10 to 12 were added at 45 ° C., and cooling was performed while stirring to room temperature to obtain a first agent.
Initial internal pressure 0.50 MPa (filling: nitrogen gas)
Viscosity 24,000 mPa · s

(Second agent)
Ingredient content (% by weight)
1) Cetyl alcohol 5.00
2) Stearyl alcohol 4.00
3) Liquid paraffin 5.00
4) Polyoxyethylene cetyl ether 5.00
5) Hydroxyethanediphosphonic acid (60%) 0.20
6) Phosphoric acid 0.02
7) Disodium hydrogen phosphate 0.10
8) Hydrogen peroxide solution (35%) 16.60
9) Remaining amount of purified water
Total 100.00
Manufacturing method Ingredients 1 to 5 are heated and melted at 80 ° C., and components 6, 7 and 9 are heated and melted at 85 ° C. and mixed. Then, cooling was performed while stirring, component 8 was added at 40 ° C., and cooling was performed while stirring to room temperature to obtain a second agent.
Initial internal pressure 0.50 MPa (filling: nitrogen gas)
Viscosity 25,000 mPa · s
Viscosity ratio (1st agent / 2nd agent) 0.96

Examples 14 were excellent in simultaneous ejection property.

Claims (4)

A two-agent simultaneous discharge aerosol-type creamy hair dye,
The first interior pouch filled with the first agent and the second interior pouch filled with the second agent are housed in one pressure-resistant container, compressed gas is filled between the interior pouch and the pressure-resistant container, and the same pressure is applied to the first. A double-structured aerosol container having a mechanism for simultaneously discharging one agent and the second agent,
It is composed of the first agent and the second agent and is used by filling it in a double-structured aerosol container. The viscosity of the first agent after discharge is 5,500 to 23,000 mPa · s, and the second agent. The viscosity after discharge is 5,600 to 22,500 mPa · s, and the ratio of the viscosity of the first agent to the second agent after discharge is 0.8 to 1 for the first agent / second agent. The first agent is a creamy hair dye containing 0.5 to 3.5% by weight of a higher alcohol, and the second agent is a creamy hair dye containing 3.0 to 6.5% by weight of a higher alcohol. And, with
The higher alcohol is a two-agent simultaneous discharge aerosol-type creamy hair dye selected from at least one of lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, araquil alcohol and behenyl alcohol. The two-agent simultaneous discharge aerosol-type creamy hair dye according to claim 1, wherein both the first agent and the second agent contain 0.1 to 10.0% by weight of a nonionic surfactant. The two-agent simultaneous discharge aerosol type according to claim 1 or 2, wherein the change in the ratio of the discharge amount of the first agent to the second agent is predetermined from the start to the end of use by ± 10% or less. Creamy hair dye. The two-agent simultaneous discharge aerosol-type creamy hair according to any one of claims 1 to 3, wherein the initial internal pressure applied to the first agent and the second agent is 0.3 to 0.8 MPa at 25 ° C. Agent.