JP2020158427A - Hai-decoloring/dye-removing agent and method for treating hair - Google Patents

Abstract

To provide a hair-decoloring/dye-removing agent capable of favorably mixing a first agent and a second agent and increasing the adhesion of the resulting mixed solution to the hair.SOLUTION: There is provided a hair-decoloring/dye-removing agent which contains an alkali agent, a powdery first agent, an oxidizing agent and a tertiary amine-type cationic surfactant and comprises at least a second agent having a viscosity at 25°C of 11000 mPa s or less, where a solution obtained by mixing 2 pts.mass of the second agent with 1 pt.mass of the first agent has a viscosity at 25°C of 18000 mPa s or more.SELECTED DRAWING: None

Description

The present invention relates to a hair bleaching / destaining agent containing at least a first agent containing an alkaline agent and a second agent containing an oxidizing agent. The present invention also relates to a method for treating hair using the above-mentioned hair bleaching / dyeing agent.

In order to decolorize or decontaminate hair, a two-agent hair decolorizing / decontaminating agent containing a first agent containing an alkaline agent and a second agent containing an oxidizing agent is widely used. Such a hair bleaching / decontaminating agent is used by mixing the first agent and the second agent and applying the obtained mixed agent to the hair.

Patent Document 1 below discloses a hair bleaching agent composed of a first agent containing chromium oxide and / or red iron oxide, an alkaline agent, and a persulfate, and a second agent containing hydrogen peroxide. ..

Patent Document 2 below discloses a colored composition containing hydrogen peroxide and an aromatic nitro compound. Patent Document 2 describes that this composition can be used as a second agent of a hair bleaching agent.

In Patent Document 3 below, either one of the first agent and the second agent is colored with one or more kinds of oxidation dyes, or both the first agent and the second agent are used. Disclosed are hair dye compositions that are colored in different colors. This hair dye composition is a two-agent foam hair dye composition used by filling a container having a mechanism for simultaneously discharging the first agent and the second agent. In addition, Patent Document 3 describes that the hair dye composition can be used as a hair bleaching agent.

Patent Document 4 below discloses a powdery bleaching aid composition containing persulfate and sodium chloride, and a hair bleaching agent containing a powdery bleaching aid composition.

Japanese Unexamined Patent Publication No. 2006-342125 Japanese Unexamined Patent Publication No. 63-035406 Japanese Unexamined Patent Publication No. 10-287534 Japanese Unexamined Patent Publication No. 2006-22354

The conventional multi-agent hair bleaching / decontaminating agent may be inferior in the mixing property of the first agent and the second agent. When the first agent is in the form of powder, the mixing property is particularly liable to decrease, and for example, the first agent may scatter when the first agent and the second agent are mixed. In addition, when the first agent contains persulfate, if the mixing of the first agent and the second agent is insufficient, the persulfate becomes locally high in the mixture, and the oxidizing agent Since the decomposition reaction is excessively promoted, the mixture foams or generates heat.

When the viscosity of the mixture is lowered in order to improve the mixing property, the adhesiveness to the hair is lowered and the mixture is likely to drip from the hair. When the viscosity of the mixture is low, the adhesiveness to the short hair portion (for example, the cut portion) is lowered, and the dripping is more likely to occur. When the adhesion to the hair is reduced, the decolorizing power is reduced.

In the hair bleaching agent described in Patent Document 1-3 above, since the first agent or the second agent is colored, the mixed state of the first agent and the second agent can be easily confirmed. It is difficult to increase the mixability of the first agent and the second agent. Further, in the hair bleaching agents described in Patent Documents 1-3, the viscosity of the mixture is not sufficiently high, and it is difficult to improve the adhesiveness to the hair.

The hair bleaching agent described in Patent Document 4 can improve the mixing property to some extent. However, even with the hair bleaching agent described in Patent Document 4, it may be difficult to sufficiently increase the mixing property. Further, in the hair bleaching agent described in Patent Document 4, the viscosity of the mixture is not sufficiently high, and it is difficult to sufficiently increase the adhesiveness to the hair.

An object of the present invention is to provide a hair bleaching / decontaminating agent capable of satisfactorily mixing the first agent and the second agent and enhancing the adhesion of the obtained mixed agent to hair. is there. Another object of the present invention is to provide a hair treatment method capable of enhancing the adhesion of the mixture to the hair.

The present invention contains a first agent that contains an alkaline agent and is in the form of powder, an oxidizing agent, and a tertiary amine-type cationic surfactant, and has a viscosity at 25 ° C. of 11000 mPa · s or less. A hair bleaching / decontaminating agent having at least two agents and having a viscosity of a mixture of 2 parts by mass of the second agent at 25 ° C. of 18,000 mPa · s or more with respect to 1 part by mass of the first agent. provide.

The hair bleaching / decontaminating agent of the present invention is a mixture of the first agent and a plurality of agents containing the second agent so that the viscosity at 25 ° C. is 18,000 mPa · s or more. Is preferably used as a mixture.

The present invention contains a first agent that contains an alkaline agent and is in the form of powder, an oxidizing agent, and a tertiary amine-type cationic surfactant, and has a viscosity at 25 ° C. of 11000 mPa · s or less. Provided is a hair bleaching / decontaminating agent having at least two agents and having a viscosity of a mixture of the first agent and a plurality of agents containing the second agent at 25 ° C. of 18,000 mPa · s or more.

In the hair bleaching / destaining agent of the present invention, it is preferable that the alkaline agent contains a persulfate.

The present invention also contains a first agent containing an alkaline agent and in the form of powder, an oxidizing agent and a tertiary amine type cationic surfactant, and has a viscosity at 25 ° C. of 11000 mPa · s or less. A step of mixing a plurality of agents including the first agent and the second agent to obtain a mixture and a step of applying the mixture to hair using a hair bleaching / decontaminating agent having at least two agents. Provided is a method for treating hair, wherein the mixture has a viscosity of 18,000 mPa · s or more at 25 ° C.

The hair bleaching / decontaminating agent of the present invention contains a first agent which contains an alkaline agent and is in the form of powder, an oxidizing agent, and a tertiary amine type cationic surfactant, and has a viscosity at 25 ° C. It includes at least a second agent having a capacity of 11000 mPa · s or less. In the hair bleaching / decontaminating agent of the present invention, a solution obtained by mixing 2 parts by mass of the second agent with 1 part by mass of the first agent, or a plurality of agents containing the first agent and the second agent. The viscosity of the mixed mixture at 25 ° C. is 18,000 mPa · s or more. Since the hair bleaching / decontaminating agent of the present invention has the above-mentioned structure, the first agent and the second agent can be mixed well, and the adhesiveness of the obtained mixed agent to the hair can be improved. Can be enhanced.

The hair treatment method of the present invention contains a first agent which contains an alkaline agent and is in the form of powder, an oxidizing agent and a tertiary amine type cationic surfactant, and has a viscosity at 25 ° C. of 11000 mPa · s or less. A hair bleaching / decontaminating agent having at least a second agent is used. The hair treatment method of the present invention includes a step of mixing a plurality of agents including the first agent and the second agent to obtain a mixture, and a step of applying the mixture to the hair. In the hair treatment method of the present invention, the viscosity of the above mixture at 25 ° C. is 18,000 mPa · s or more. In the hair treatment method of the present invention, the adhesiveness of the mixture to the hair can be enhanced.

Hereinafter, the present invention will be described in detail.

The hair bleaching / decontaminating agent of the present invention contains a first agent which contains an alkaline agent and is in the form of powder, an oxidizing agent, and a tertiary amine type cationic surfactant, and has a viscosity at 25 ° C. It includes at least a second agent having a capacity of 11000 mPa · s or less.

In the hair bleaching / decontaminating agent of the present invention, a solution obtained by mixing 2 parts by mass of the second agent with 1 part by mass of the first agent, or a plurality of agents containing the first agent and the second agent. The viscosity of the mixed mixture at 25 ° C. is 18,000 mPa · s or more.

Since the hair bleaching / decontaminating agent of the present invention has the above-mentioned structure, the first agent and the second agent can be mixed well, and the adhesiveness of the obtained mixed agent to the hair can be improved. Can be enhanced. In the present invention, the low viscosity state is maintained during the mixing of the first agent and the second agent, the first agent and the second agent can be mixed well, and after the mixing, the mixing agent The viscosity becomes high, and the adhesion to the hair can be improved.

Further, since the hair bleaching / decontaminating agent of the present invention has the above-mentioned structure, the bleaching / decontaminating power can be enhanced.

As the alkaline agent, the oxidizing agent and the tertiary amine type cationic surfactant, only one type may be used, or two or more types may be used.

The first agent and the second agent are mixed, or when the hair bleaching / decontaminating agent comprises three or more agents, a plurality of three or more agents (the first agent and the second agent). And other compositions (for example, a third agent) are mixed to prepare a mixed solution, and then the obtained mixed solution is applied to the hair for use. In the present specification, the mixed solution may be referred to as a "mixing agent". Therefore, the mixture is a coating liquid that is applied to the hair.

Hereinafter, details of each component used in the hair bleaching / decontaminating agent of the present invention will be described.

[First agent (first agent composition)]
The properties of the first agent are powdery.

(Alkaline agent)
The first agent contains an alkaline agent. Only one kind of alkaline agent may be used, or two or more kinds may be used.

Examples of the alkaline agent include persulfate, sodium silicate, sodium metasilicate, ammonia, ammonium hydrogencarbonate, ammonium carbonate, sodium hydrogencarbonate, sodium carbonate, isopropanolamine, monoethanolamine, diethanolamine, triethanolamine, and 2-. Amino-2-methyl-1-propanol and the like can be mentioned.

Examples of the persulfate include ammonium persulfate, sodium persulfate, potassium persulfate and the like.

From the viewpoint of further effectively promoting the decomposition of melanin in hair and exerting an excellent decolorizing / decontaminating effect in a short time, the above alkaline agent is a group consisting of persulfate, sodium silicate and sodium metasilicate. It is preferable to contain an alkaline agent (at least one alkaline agent) selected from the above, and more preferably to contain an alkaline agent (at least one alkaline agent) selected from the group consisting of persulfate and sodium metasilicate. It is more preferred to include salt.

The content of the persulfate in 100% by mass of the alkaline agent is preferably 60.0% by mass or more, more preferably 65.0% by mass or more, preferably 90.0% by mass or less, and more preferably 80. It is 0% by mass or less. When the content of the persulfate is at least the above lower limit, the decolorizing / decontaminating power can be further enhanced. When the content of the persulfate is not more than the above upper limit, excessive heat generation and excessive foaming at the time of mixing the first agent and the second agent can be suppressed.

The content of the alkaline agent in 100% by mass of the first agent is preferably 60.0% by mass or more, more preferably 70.0% by mass or more, preferably 90.0% by mass or less, and more preferably 85.0% by mass. % Or less. When the content of the alkaline agent is not less than the above lower limit and not more than the above upper limit, the pH of the mixture can be easily adjusted within a suitable range, the viscosity of the mixture can be set within a suitable range, and the hair can be treated. Adhesion and coatability can be further improved. The content of the alkaline agent is the sum of the contents of all the alkaline agents in the first agent.

(Other ingredients)
The first agent may contain components other than the alkaline agent. The properties of the other components are powdery.

Examples of the other components include sodium chloride, silicic anhydride, magnesium carbonate and the like.

The first agent preferably contains sodium chloride. When the first agent contains sodium chloride, the mixing property of the first agent and the second agent can be further enhanced.

When the first agent contains sodium silicate and sodium chloride, the mass ratio of the content of sodium chloride in the first agent to the content of sodium silicate in the first agent (sodium chloride content / kei). The content of sodium acid) is preferably 1.0 or more, more preferably 1.5 or more, still more preferably 2.0 or more, preferably 7.0 or less, and more preferably 5.0 or less. When the mass ratio (content of sodium chloride / content of sodium silicate) is not less than the above lower limit and not more than the above upper limit, the coatability can be improved.

[Second agent (second agent composition)]
(Primary amine type cationic surfactant)
The second agent contains a tertiary amine type cationic surfactant. Only one kind of tertiary amine type cationic surfactant may be used, or two or more kinds may be used.

By using the tertiary amine type cationic surfactant, the first agent and the second agent can be mixed well, and the adhesiveness of the obtained mixture to the hair can be enhanced. The tertiary amine-type cationic surfactant has a low viscosity at a relatively low pH (for example, a pH of 4 or less), and has a property of thickening as the pH increases. By using the tertiary amine type cationic surfactant, a low viscosity state is maintained during the mixing of the first agent and the second agent, and the first agent and the second agent can be mixed well. After mixing, the pH of the mixture is increased by the action of the alkaline agent contained in the first agent, so that the viscosity of the mixture is increased and the adhesion to the hair can be enhanced.

Further, by using a tertiary amine type cationic surfactant, the treatment property and the conditioning property can be improved.

Examples of the tertiary amine type cationic surfactant include stearate diethylaminoethylamide, behenic acid diethylaminoethylamide, palmitate diethylaminoethylamide, myristic acid diethylaminoethylamide, lauric acid diethylaminoethylamide, coconut oil fatty acid diethylaminoethylamide, and stearer. Acid dimethylaminopropylamide, behenic acid dimethylaminopropylamide, palmitate dimethylaminopropylamide, myristic acid dimethylaminopropylamide, lauric acid dimethylaminopropylamide, palm oil fatty acid dimethylaminopropylamide, stearate dimethylaminoethylamide, behenin Acid dimethylaminoethylamide, palmitate dimethylaminoethylamide, myristic acid dimethylaminoethylamide, lauric acid dimethylaminoethylamide, coconut oil fatty acid dimethylaminoethylamide, stearate dimethylamine, behenate dimethylamine, palmitate dimethylamine, Examples thereof include dimethylamine myristate, dimethylamine laurate, coconut oil fatty acid dimethylamine, behenyldimethylamine, stearyldimethylamine, palmitoxypropyldimethylamine, stearoxypropyldimethylamine and the like. The tertiary amine-type cationic surfactant may be a salt of the compound, or may be blended in the second agent in the form of a salt of the compound.

From the viewpoint of further improving the mixability of the first agent and the second agent and further enhancing the adhesion of the obtained mixture to the hair, the tertiary amine-type cationic surfactant is stearic acid. It is preferable to contain a tertiary amine type cationic surfactant (at least one tertiary amine type cationic surfactant) selected from the group consisting of dimethylaminopropylamide, diethylaminoethylamide stearate, and dimethylamine stearate. ..

From the viewpoint of further improving the mixability of the first agent and the second agent and further enhancing the adhesion of the obtained mixture to the hair, the above-mentioned tertiary amine type cationic surfactant is used. More preferably, it is a tertiary amine type cationic surfactant selected from the group consisting of dimethylaminopropyl amide stearate, diethyl aminoethyl amide stearate, and dimethylamine stearate. The second agent preferably contains a tertiary amine type cationic surfactant selected from the group consisting of dimethylaminopropyl amide stearate, diethyl aminoethyl amide stearate, and dimethylamine stearate.

Only one type of tertiary amine type cationic surfactant selected from the group consisting of dimethylaminopropyl amide stearate, diethyl aminoethyl amide stearate, and dimethylamine stearate may be used, and two or more types may be used. May be done.

The content of the tertiary amine type cationic surfactant in 100% by mass of the second agent is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.8% by mass. Above, particularly preferably 1.5% by mass or more, most preferably 3.0% by mass or more, preferably 25.0% by mass or less, more preferably 18.0% by mass or less, still more preferably 15.0% by mass or less. Is. When the content of the tertiary amine type cationic surfactant is not less than the above lower limit and not more than the above upper limit, the viscosity of the mixture can be in a suitable range, so that the coatability and the adhesiveness to the hair are improved. It can be further enhanced. Further, when the content of the tertiary amine type cationic surfactant is not more than the above lower limit, the treatment property and the conditioning property can be improved. The content of the tertiary amine-type cationic surfactant is the sum of the contents of all the tertiary amine-type cationic surfactants in the second agent.

(Oxidant)
The second agent contains an oxidizing agent. Only one kind of oxidizing agent may be used, or two or more kinds may be used.

Examples of the oxidizing agent include hydrogen peroxide and the like.

The content of the oxidizing agent in 100% by mass of the second agent is preferably 1.0% by mass or more, more preferably 3.0% by mass or more, preferably 12.0% by mass or less, and more preferably 6.0. It is mass% or less. When the content of the oxidizing agent is at least the above lower limit, the decolorization / decontamination effect is further enhanced. When the content of the oxidizing agent is not more than the above upper limit, skin irritation is reduced.

(water)
The second agent preferably contains water. The water is preferably purified water.

The content of water in 100% by mass of the second agent can be appropriately adjusted depending on the type of the container containing the second agent and the properties of the target second agent, but is preferably 30.0% by mass or more. , More preferably 40.0% by mass or more, preferably 90.0% by mass or less, and more preferably 80.0% by mass or less.

(Other ingredients)
The second agent may contain components other than the tertiary amine type cationic surfactant and the oxidizing agent as long as the effects of the present invention are not impaired. Examples of the other components include lower alcohols having 2 to 5 carbon atoms, polyhydric alcohols, sugar alcohols, higher alcohols having 12 to 18 carbon atoms, ester oils, hydrocarbon oils, fats and oils, waxes, silicone oils, and tertiary amine types. Examples thereof include surfactants other than cationic surfactants, stabilizers, metal ion sequestering agents, antioxidants, plant extracts, pH adjusters, fragrances, preservatives and solvents.

Examples of the lower alcohol include ethanol and the like.

Examples of the polyhydric alcohol include glycerin, diglycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2. -Octanediol, 1,2-decanediol, polyoxypropylene methyl glucoside and the like can be mentioned.

Examples of the sugar alcohol include sorbitol, maltitol, trehalose and the like.

Examples of the higher alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, cetostearyl alcohol, and oleyl alcohol.

Examples of the ester oil include isopropyl palmitate, glyceryl tri2-ethylhexanoate, isopropyl myristate, propylene glycol monostearate, propylene glycol monolaurate, and polyglyceryl isostearate.

Examples of the hydrocarbon oil include liquid paraffin, petrolatum, squalene, and squalane.

Examples of the fats and oils include olive oil, camellia oil, macadamia nut oil, avocado oil and the like.

Examples of the wax include carnauba wax, candelilla wax, beeswax, lanolin and the like.

Examples of the stabilizer include disodium edetate, tetrasodium pyrophosphate, and phosphoric acid.

The second agent preferably does not contain the polyhydric alcohol, or contains the polyhydric alcohol in an amount of 0.5% by mass or more. When the second agent contains the polyhydric alcohol, the content of the polyhydric alcohol in 100% by mass of the second agent is preferably 0.5% by mass or more, more preferably 1.0% by mass or more. It is preferably 10.0% by mass or less, more preferably 8.0% by mass or less. When the content of the polyhydric alcohol is at least the above lower limit, the viscosity of the mixture can be easily set in a suitable range. When the content of the polyhydric alcohol is not more than the above upper limit, the thickening effect of the mixture by the tertiary amine type cationic surfactant can be more effectively exhibited.

The properties of the second agent are not particularly limited, and may be liquid, gel, or cream. The properties of the second agent are preferably liquid, gel-like or cream-like, and more preferably cream-like.

(Other details of the first and second agents)
The viscosity of the second agent at 25 ° C. is 11000 mPa · s or less. If the viscosity of the second agent at 25 ° C. exceeds 11000 mPa · s, the mixability of the first agent and the second agent may be inferior.

The viscosity of the second agent at 25 ° C. is preferably 1000 mPa · s or more, preferably 10100 mPa · s or less, more preferably 9000 mPa · s or less, and further preferably 7000 mPa · s or less. When the viscosity is at least the above lower limit, the handleability can be improved. When the viscosity is not more than the above upper limit, the first agent and the second agent can be mixed even more satisfactorily. The viscosity of the second agent at 25 ° C. may be less than 1000 mPa · s.

The above viscosity was determined by using a viscometer. It is measured using a 4-rotor under the conditions of a rotation speed of 12 rpm or 6 rpm and a rotation time of 1 minute. As the viscometer, a TV-25 type viscometer manufactured by Toki Sangyo Co., Ltd. can be used.

The pH of the second agent is preferably 1.0 or more, more preferably 2.0 or more, preferably 4.5 or less, and more preferably 4.0 or less. When the pH is at least the above lower limit, the stability of the oxidizing agent (hydrogen peroxide) is improved. When the pH is not more than the above upper limit, the viscosity of the second agent at 25 ° C. can be easily adjusted within the above-mentioned suitable range, and the first agent and the second agent can be mixed more satisfactorily.

As a method for producing the first agent and the second agent, a known method for producing the first agent and the second agent can be adopted. Examples of the method for producing the first agent and the second agent include a method of stirring and homogenizing each component with a paddle mixer or the like.

(Other details of hair bleaching / destaining agent)
The hair bleaching / decontaminating agent of the present invention includes at least the above-mentioned first agent and the above-mentioned second agent. The hair bleaching / decontaminating agent of the present invention is a hair bleaching / decontaminating agent kit including at least the first agent and the second agent. The hair bleaching / decontaminating agent of the present invention is a multi-agent hair bleaching / decontaminating agent.

The hair bleaching / decontaminating agent of the present invention may further include a third agent (third agent composition) in addition to the first agent and the second agent. Examples of the third agent include a decolorizing agent, a hair rinsing agent, a hair treatment agent, a hair conditioning agent and the like. Further, the hair bleaching / decontaminating agent of the present invention may include a third agent such as a bleaching agent and a fourth agent (fourth agent composition) such as a hair rinsing agent, a hair treatment agent or a hair conditioning agent. Good.

The hair bleaching / decontaminating agent of the present invention may be a two-agent hair bleaching / destaining agent, a three-agent hair bleaching / decontaminating agent, or a four-agent hair bleaching / decontaminating agent. It may be a decontamination agent. From the viewpoint of excellent operability, the hair bleaching / decontaminating agent of the present invention is preferably a two-agent hair bleaching / decontaminating agent including the first agent and the second agent.

The first agent and the second agent can be stored or used in a form contained in a container. Examples of the container include a plastic container, an aluminum tube container, a pouch container, an aerosol container and the like. The container is not particularly limited, but is preferably an aluminum tube container from the viewpoint of enhancing convenience.

The hair bleaching / decontaminating agent of the present invention is a mixture of the first agent and the second agent, or a combination of the first agent, the second agent and other components (for example, the third agent, etc.). After mixing to prepare a mixture, the obtained mixture is applied to hair and used. The hair bleaching / destaining agent of the present invention is mixed and used as a mixing agent.

The properties of the above-mentioned mixture are not particularly limited, and may be liquid, gel, or cream. From the viewpoint of effectively enhancing the adhesion of the mixture to the hair, the properties of the mixture are preferably gel-like or cream-like.

In general, commercially available hair bleaching / decontaminating agents often have a fixed mixing ratio of a plurality of agents. In addition, in commercially available hair bleaching / decontaminating agents, the entire amount of a plurality of agents may be mixed and used.

In the two-agent hair bleaching / decontaminating agent of the first agent and the second agent, the first agent and the second agent are mixed to obtain a mixed agent. In the three-agent hair bleaching / decontaminating agent of the first agent, the second agent, and the third agent, the first agent, the second agent, and the third agent are mixed to form a mixed agent. can get. In the four-agent hair bleaching / decontaminating agent of the first agent, the second agent, the third agent, and the fourth agent, the first agent, the second agent, the third agent, and the fourth agent are used. Is mixed to obtain a mixture.

From the viewpoint of enhancing the adhesion to hair, a liquid obtained by mixing 2 parts by mass of the second agent with 1 part by mass of the first agent (hereinafter, may be referred to as "liquid X") or the first agent. The viscosity of a mixture containing a plurality of agents including the second agent (the first agent and the second agent when the hair bleaching / hair bleaching / destaining agent is a two-agent type) at 25 ° C. It is 18,000 mPa · s or more.

Liquid X is prepared to measure the viscosity. The liquid X may be a mixture or may be different from the mixture.

From the viewpoint of further enhancing the adhesion to hair, the viscosity of the liquid X at 25 ° C. is preferably 20000 mPa · s or more, preferably 60,000 mPa · s or less, and more preferably 50,000 mPa · s or less.

From the viewpoint of further enhancing the adhesiveness to the hair, a plurality of agents including the first agent and the second agent (when the hair bleaching / hair bleaching / detaining agent is a two-agent type, the first agent and the second agent) The viscosity of the mixed agent mixed with the agent) at 25 ° C. is preferably 20000 mPa · s or more, preferably 60,000 mPa · s or less, and more preferably 50,000 mPa · s or less.

From the viewpoint of enhancing the adhesion to the hair, the hair bleaching / decontaminating agent of the present invention is a plurality of agents including the first agent and the second agent (a two-agent type of hair bleaching / hair bleaching / detaining agent). In some cases, it is preferable to use a mixture of the above-mentioned plurality of agents so that the viscosity of the mixed agent obtained by mixing the first agent and the second agent) at 25 ° C. is 18,000 mPa · s or more. From the viewpoint of further enhancing the adhesion to hair, the hair bleaching / decontaminating agent of the present invention has a viscosity of the above mixture at 25 ° C., preferably 20000 mPa · s or more, preferably 60000 mPa · s or less, more preferably Is preferably used by mixing the above-mentioned plurality of agents so as to be 50,000 mPa · s or less.

The above viscosity was determined by using a viscometer. It is measured using a 4-rotor under the conditions of a rotation speed of 12 rpm or 6 pm and a rotation time of 1 minute. As the viscometer, a TV-25 type viscometer manufactured by Toki Sangyo Co., Ltd. can be used.

The ratio of the viscosity of the liquid X at 25 ° C. to the viscosity of the second agent at 25 ° C. (viscosity of the liquid X at 25 ° C./viscosity of the second agent at 25 ° C.) is preferably 1.5 or more. It is preferably 60 or less. When the above ratio (viscosity of the liquid X at 25 ° C./viscosity of the second agent at 25 ° C.) is at least the above lower limit, the effect of the present invention can be exhibited even more effectively. When the above ratio (viscosity of the liquid X at 25 ° C./viscosity of the second agent at 25 ° C.) is not more than the above upper limit, the handleability can be improved. The above ratio (viscosity of the liquid X at 25 ° C./viscosity of the second agent at 25 ° C.) may exceed 60.

The ratio of the viscosity of the mixture at 25 ° C to the viscosity of the second agent at 25 ° C (viscosity of the mixture at 25 ° C / viscosity of the second agent at 25 ° C) is preferably 1.5 or more. It is preferably 60 or less. When the above ratio (viscosity of the mixture at 25 ° C./viscosity of the second agent at 25 ° C.) is at least the above lower limit, the effect of the present invention can be exhibited even more effectively. When the above ratio (viscosity of the mixture at 25 ° C./viscosity of the second agent at 25 ° C.) is not more than the above upper limit, the handleability can be improved. The above ratio (viscosity of the mixture at 25 ° C./viscosity of the second agent at 25 ° C.) may exceed 60.

The pH of the liquid X or the mixture is preferably 6 or more, more preferably 7 or more, preferably 11 or less, and more preferably 10 or less. When the pH is at least the above lower limit, the viscosity of the mixture at 25 ° C. can be easily adjusted within the above-mentioned suitable range, and the adhesion to hair and the coatability can be improved. When the pH is below the upper limit, skin irritation is reduced.

The mixing ratio when the first agent and the second agent are mixed is not particularly limited. From the viewpoint of satisfactorily mixing the first agent and the second agent, the second agent is preferably 0.5 parts by mass or more, more preferably 0.8 parts by mass or more with respect to 1 part by mass of the first agent. , It is preferable to mix in an amount of 8.0 parts by mass or less, more preferably 6.0 parts by mass or less to obtain a mixing agent.

(Hair decolorization / decontamination method using a decolorizing agent)
The hair bleaching / destaining agent of the present invention can be used to bleach or decontaminate hair.

The hair decolorization / decontamination method using the hair decolorization / decontamination agent includes a first step of mixing a plurality of agents including the first agent and the second agent to obtain a mixture, and the mixture. It is preferable to include a second step of applying the above to the hair. When the hair bleaching / decontaminating agent is a two-agent type hair bleaching / decontaminating agent, the hair treatment method using the hair bleaching / decontaminating agent is a mixture of the first agent and the second agent. It is preferable to include a first step of obtaining the mixture and a second step of applying the mixture to the hair.

The coating method in the second step is not particularly limited. Examples of the method of application include a method of applying by hand wearing protective gloves, a method of using an application tool such as a comb and a brush, and the like.

From the viewpoint of enhancing the decolorization / decontamination effect, the hair treatment method preferably includes a third step of leaving the mixture applied to the hair. From the viewpoint of further enhancing the decolorization / decontamination effect, the leaving time is preferably 5 minutes or more, preferably 30 minutes or less.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples. The present invention is not limited to the following examples.

In Examples and Comparative Examples, the following components were used for the preparation of the first agent and the second agent.

[First agent]
(Alkaline agent)
Potassium persulfate Ammonium persulfate Sodium persulfate Sodium silicate Sodium metasilicate (other ingredients)
Magnesium carbonate Sodium chloride Silicate anhydride

[Second agent]
(Primary amine type cationic surfactant)
Dimethylaminopropyl Stearate Dimethylaminoethylamide stearate (a component that does not correspond to a tertiary amine type cationic surfactant)
Stearyltrimethylammonium chloride: quaternary amine type cationic surfactant (oxidizing agent)
Hydrogen peroxide (water)
Purified water (other ingredients)
Cetanol Polyoxyethylene cetyl ether 1: (manufactured by Aoki Oil & Fat Industry Co., Ltd., trade name "Brownon CH-305")
Polyoxyethylene cetyl ether 2: (manufactured by CRODA INC, trade name "BRIJ C20-PA- (SG)")
Liquid paraffin: (manufactured by Sonneborn, trade name "CARNATION")
Propylene glycol Glycerin Dipropylene glycol 1,3-butylene glycol Phosphoric acid

(Examples 1 to 13 and Comparative Examples 1 to 7)
Preparation of 1st and 2nd agents:
The compounding components shown in Tables 1 to 3 below were compounded (the compounding unit was mass%) to prepare the first agent and the second agent. The blending amount in the table (blending amount in 100% by mass of the first agent and blending amount in 100% by mass of the second agent) is shown by the blending amount of pure content (unit: mass%).

The properties of the first agent obtained in Examples 1 to 13 and Comparative Examples 1 to 7 were all in the form of powder.

Preparation of mixture:
In the combination of the first agent and the second agent shown in Tables 1 to 3 below, the obtained second agent is mixed in 2 parts by mass with respect to 1 part by mass of the obtained first agent, and dedicated stirring is performed. The mixture was obtained by stirring with a rod until the first agent and the second agent were completely mixed. The obtained mixture also corresponds to the above liquid X.

(Evaluation)
The following evaluations were performed on the obtained first agent, second agent and mixture. The evaluation results are shown in Tables 1 to 3.

(Test Example 1: Viscosity)
The viscosities of the obtained second agent and mixture were measured at 25 ° C. Further, the ratio (viscosity of the mixture at 25 ° C./viscosity of the second agent at 25 ° C.) was calculated from the measured viscosity of the second agent and the viscosity of the mixture.

The viscosity was determined by using a TV-25 type viscometer (manufactured by Toki Sangyo Co., Ltd.). The measurement was performed using a 4-rotor under the conditions of a rotation speed of 12 rpm and a rotation time of 1 minute. When the measured value of the viscosity measured under this condition was 50,000 mPa · s or less, the measured value was adopted as the viscosity of the second agent and the mixture at 25 ° C. Further, when the measured value of the viscosity measured under this condition exceeds 50,000 mPa · s, the measurement is performed again in the same manner as above except that the rotation speed is changed to 6 rpm, and the obtained measured value is the first. The viscosities of the two agents and the mixture were taken at 25 ° C.

(Test Example 2: Mixability)
20 g of the obtained first agent and 40 g of the obtained second agent were mixed and stirred for 30 seconds using a dedicated stirring rod. Three expert panels visually observed the mixed state after stirring, and discussed and decided the evaluation result.

<Evaluation criteria for mixing>
○○ (quite good): completely mixed with no non-uniform parts ○ (good): almost completely mixed with almost no non-uniform parts △ (slightly good): non-uniform parts Is partially left × (defective): Many non-uniform parts remain

(Test Example 3: Adhesion to hair)
10 g of the obtained mixture was applied to a horizontally placed 10 cm flat hair bundle (manufactured by Burax Co., Ltd.) using a special brush, and then the hair bundle was placed vertically and observed for 3 minutes. Adhesion to hair was judged according to the following criteria.

<Evaluation criteria for adhesion to hair>
○○ (quite good): The mixture does not drip from the hair and does not move on the hair 3 minutes after application ○ (Good): The mixture is less than 2 cm below the hair 3 minutes after application Moving △ (Slightly good): The mixture moves to the bottom of the hair 2 cm or more and less than 10 cm 1 minute after application, and the mixture does not drip from the hair 3 minutes after application × ( Defective): The mixture drips from the hair 3 minutes after application.

(Test Example 4: Decolorizing power)
2 g of the obtained mixture was uniformly applied to a black human hair bundle having a length of 10 cm (“Level 4 hair bundle” manufactured by Bulux Co., Ltd.) and left to stand in an atmosphere of 30 ° C. for 30 minutes. Then, it was washed with water, and the hair bundle was dried using a dryer. Three specialized panels visually observed the decolorized state and discussed and decided the evaluation result.

<Evaluation criteria for decolorizing power>
○ (Good): Clearly brighter than the hair bundle before bleaching △ (Slightly good): Slightly brighter than the hair bundle before bleaching × (Poor): Brightness equivalent to the hair bundle before bleaching

The compositions and results of the first and second agents are shown in Tables 1 to 3 below.

Claims (5)

The first agent, which contains an alkaline agent and is in powder form,
At least a second agent containing an oxidizing agent and a tertiary amine type cationic surfactant and having a viscosity at 25 ° C. of 11000 mPa · s or less is provided.
A hair bleaching / decontaminating agent having a viscosity of 18,000 mPa · s or more at 25 ° C., which is a mixture of 1 part by mass of the first agent and 2 parts by mass of the second agent. The first aspect of the present invention, wherein the plurality of agents are mixed and used so that the viscosity of the mixture of the first agent and the plurality of agents containing the second agent at 25 ° C. is 18,000 mPa · s or more. The listed hair bleaching / decontaminating agent. The first agent, which contains an alkaline agent and is in powder form,
At least a second agent containing an oxidizing agent and a tertiary amine type cationic surfactant and having a viscosity at 25 ° C. of 11000 mPa · s or less is provided.
A hair bleaching / decontaminating agent having a viscosity at 25 ° C. of 18,000 mPa · s or more, which is a mixture of the first agent and a plurality of agents containing the second agent. The hair bleaching / decontaminating agent according to any one of claims 1 to 3, wherein the alkaline agent contains a persulfate. At least a first agent containing an alkaline agent and in the form of a powder and a second agent containing an oxidizing agent and a tertiary amine-type cationic surfactant and having a viscosity at 25 ° C. of 11000 mPa · s or less are provided. A step of mixing a plurality of agents including the first agent and the second agent to obtain a mixed agent using a hair bleaching / decontaminating agent.
The step of applying the mixture to the hair is provided.
A method for treating hair, wherein the mixture has a viscosity of 18,000 mPa · s or more at 25 ° C.