JP2024023506A - Deodorant composition for permanent wave-treated hair, manufacturing method of deodorant composition, and deodorizing method of hair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel deodorant composition for permanent wave-treated hair capable of deodorizing hair after a permanent wave treatment; and to provide a manufacturing method of a deodorant, and a deodorizing method of hair.

SOLUTION: A deodorant composition for permanent wave-treated hair includes a solvent containing water, and deodorant powder dispersed into the solvent.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a deodorant composition for permanently treated hair, a method for producing a deodorant composition, and a method for deodorizing hair.

During perming, a perming agent is applied to the hair. Permanent agents often contain sulfur-containing compounds such as cysteamine as active ingredients. As a result of these sulfur-containing compounds being deposited on the hair, the hair has a characteristic odor after being permed. Therefore, a technique for removing odor from permed hair is desired.

In connection with the above, for example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2003-261425) discloses a deodorizing treatment agent for cysteamine-treated hair that is characterized by containing one or more divalent metal ions. Disclosed.

JP2003-261425A

As far as the present inventors know, no technology other than the technology described in Patent Document 1 has been reported that removes and deodorizes the odor generated by perm treatment from hair.
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a novel deodorant composition for permanently-treated hair, a method for producing a deodorant composition, and a method for deodorizing hair, which can deodorize permanently-treated hair. It's about doing.

In order to solve the above problems, the present invention includes the following matters.
[1] A deodorant composition for perm-treated hair containing a deodorant powder having the function of adsorbing sulfur-containing compounds.
[2] The deodorant composition according to [1], further comprising a solvent, and the deodorant powder is dispersed in the solvent.
[3] The deodorant composition according to [2], wherein the solvent has a pH of 3 to 12.
[4] The deodorant composition according to [2] or [3], wherein the content of the deodorant powder is 0.001 to 50% by mass.
[5] The deodorant composition according to any one of [2] to [4], wherein the cysteamine deodorizing rate is 50 μg/mg per minute or more.
[6] Any of [1] to [5], wherein the deodorant powder is a powder containing at least one metal X selected from the group consisting of manganese, copper, nickel, silver, zinc, platinum, and iron. A deodorant composition as described in Crab.
[7] The deodorant composition according to [6], wherein the deodorant powder contains porous silica, and the metal X is doped with the porous silica or supported as particles.
[8] The deodorant composition according to any one of [1] to [6], wherein the deodorant powder contains activated carbon, a silicate, a tetravalent metal phosphate, or a zeolite.
[9] A step of preparing a solvent, and a step of dispersing deodorant powder in the solvent,
A method for producing a deodorant composition for permed hair, comprising:
[10] A method for deodorizing hair, comprising the steps of perming hair and applying the deodorant composition according to any one of [1] to [8] to the hair. .

According to the present invention, there are provided a novel deodorizing composition for permanently-treated hair, a method for producing a deodorant, and a method for deodorizing hair, which can deodorize permanently-treated hair.

FIG. 1 is an electron micrograph of hair to which a deodorant composition has been applied.

Embodiments of the present invention will be described below.
1: First embodiment
The deodorant composition for permanently treated hair according to the first embodiment includes a solvent and deodorant powder dispersed in the solvent. When the deodorant composition for permed hair according to this embodiment is applied to the hair, the deodorant powder dispersed in the solvent adheres to the hair. By adhering the deodorant powder to the hair, the odor of the hair is quickly deodorized.
In addition, for example, as described in Patent Document 1 (Japanese Unexamined Patent Publication No. 2003-261425), if a substance that achieves deodorizing function is present in the solvent in the form of metal ions, wastewater treatment The burden will be greater in terms of etc. For example, treatment to remove metal ions using an ion exchange resin or the like is required at the drainage destination. On the other hand, according to this embodiment, since the substance with deodorizing function exists as a powder, the deodorant powder can be easily separated and recovered as a contaminant at the drainage destination using a sedimentation device or the like. can do. In other words, the burden required for wastewater treatment can be reduced.

The details of this embodiment will be explained below.

(solvent)
The solvent contained in the deodorant composition is not particularly limited as long as it allows the deodorant powder to be dispersed without being dissolved. Preferably, a liquid containing water as a main component (eg, 50% by mass or more, preferably 80% by mass or more) is used as the solvent.

The pH of the solvent is preferably 3-12, more preferably 6-10. If the pH is within this range, there will be less damage to the hair.

Preferably, the solvent has a low viscosity. If the viscosity is low, the sulfur-containing compound to be deodorized will easily diffuse into the solvent and will be easily adsorbed by the deodorant powder. As a result, the deodorization speed can be increased. The viscosity of the solvent is, for example, 0.5 to 1000 mPa/sec, preferably 0.5 to 100 mPa/sec at 25°C.

(deodorant powder)
The deodorant powder is not particularly limited as long as it reacts with the sulfur-containing compound that causes the odor originating from the perm agent and is dispersed in the solvent.

The content of the deodorant powder in the composition is, for example, 0.001 to 50% by mass, preferably 0.1 to 10% by mass. If the content of the deodorant powder is 0.001% by mass or more, a sufficient deodorizing effect can be obtained. If the content of the deodorant powder is 50% by mass or less, fluidity is maintained.

The mode diameter of the deodorant powder is, for example, 0.1 to 100 μm, preferably 0.5 to 50 μm.

Examples of the deodorant powder include powder containing metal X that has the function of adsorbing sulfur-containing compounds; activated carbon; and zeolite.

As the powder containing metal X, preferably, a powder in which metal X is supported on a base material is used.
Examples of the matrix include porous silica, silicates, and tetravalent metal phosphates.
Examples of the metal X include at least one metal selected from the group consisting of manganese, copper, nickel, silver, zinc, platinum, and iron. Preferred metals X include manganese, copper, and iron. More preferable metals X include manganese and copper.

More preferably, porous silica containing metal X is used as the powder containing metal X.
In this case, the metal X may be "doped" into the porous silica, or may be "supported as particles on the porous silica." Preferably, metal X is doped into the porous silica.
Note that "doped" refers to a state in which metal X is incorporated at the position of Si element within the SiO ₄ skeleton of silica.
Moreover, "supported on porous silica as particles" refers to a state in which metal X is supported on porous silica without being doped.

The specific surface area of the porous silica is, for example, 500 m ² /g or more, preferably 800 to 2000 m ² /g, more preferably 800 to 1600 m ² /g. When the specific surface area of the porous silica is 500 m ² /g or more, a sufficient contact area between the doped metal and the odor to be deodorized is ensured, and high deodorizing efficiency can be obtained. Further, if the specific surface area is 2000 m ² /g or less, strength for maintaining the pore structure can be ensured.

The pores formed in the porous silica may have a size that allows solvent molecules and sulfur-containing compound molecules to enter and exit. For example, it is sufficient if the diameter of the pores is 2 nm or more.

By doping the porous silica with the metal X, the deodorizing efficiency becomes higher than when the metal X is present in the form of particles without being doped. If metal X is doped, metal X will be present over the entire surface of the porous silica. As a result, it is considered that the contact area between the odor and the metal X becomes larger than in the case where the metal X is present in the form of particles, resulting in a high deodorizing efficiency.

In addition, for example, if metal X is supported on porous silica as a metal salt soluble in a solvent, it is possible that metal X will be eluted into the solvent as metal ions when a deodorant is used. It will be done. In some cases, it may be necessary to perform expensive treatment such as ion exchange to prevent metal ions from flowing out as wastewater, which may result in a burden for wastewater treatment. On the other hand, when metal X is doped into porous silica, the separation of metal The processing burden can be reduced.

Furthermore, when the metal X is contained in the porous silica in a doped form, the color tone when the metal X is present alone is reduced. Therefore, the appearance of the deodorant composition can be easily controlled to a desired color.

The content of metal X in the porous silica is, for example, 0.01 to 10% by mass, preferably 0.1 to 5% by mass. If the content of metal X is 0.01% by mass or more, a sufficient deodorizing effect can be obtained. Further, if the amount is 10% by mass or less, porous silica containing metal X can be easily synthesized.

Preferably, the porous silica contains a metal different from metal X.

Examples of metals different from metal X include metal Y for suppressing hydrolysis of porous silica. Examples of the metal Y include metals selected from the group consisting of Al and Zr. Preferably, the metal Y is doped into the porous silica.
By doping the porous silica with metal Y, the hydrothermal durability of the porous silica is enhanced. The reason for this is thought to be that when metal Y is doped, hydrolysis of the siloxane skeleton of silica is suppressed, making the pore structure less likely to collapse.

The content of metal Y in the porous silica is, for example, 0.01 to 10% by mass, preferably 0.1 to 5% by mass. When the content of metal Y is 0.1% by mass or more, the effect of maintaining the specific surface area during storage over time by suppressing hydrolysis of the siloxane skeleton can be obtained. If it is 10% by mass or less, a high specific surface area of 500 m ² /g or more can be achieved.

Further, as a metal different from metal X, metal Z having a function of removing odors other than sulfur-containing odors may be included in the porous silica. Examples of the metal Z include at least one metal selected from the group consisting of Co, Zn, Ag, and Ca, preferably Co. When porous silica contains Co, etc., it can be expected to decompose not only sulfur-containing odors but also aldehyde odors and fatty acid odors, and to obtain porous silica that can deodorize multiple odors at once. Can be done.
The metal Z may be "doped" into the porous silica, or may be "supported as particles on the porous silica."

The content of metal Z in the porous silica is, for example, 0.01 to 10% by mass, preferably 0.1 to 5% by mass.

Specifically, it is preferable that the porous silica has at least a part of the chemical structure represented by the following formula 1.
(Formula 1): SiO ₂・aXO _b/2・cYO _d/2・eZO _f/2
Note that in Formula 1, X represents metal X.
Y represents metal Y.
Z represents metal Z.
a represents a number greater than 0 and less than or equal to 0.1.
c and e each represent a number from 0 to 0.1.
b, d, and f represent the valences of metal X, metal Y, and metal Z, respectively.

In addition, in order to make porous silica contain metal X, metal Y, or metal Z, a water-soluble metal salt containing metal It may be mixed with porous silica or its precursor.

On the other hand, when the deodorant powder contains activated carbon, commercially available activated carbon can be used. As the activated carbon, for example, one having a specific surface area of 500 m ² /g or more, preferably 1000 to 2000 m ² /g can be used.

In addition, when the deodorant powder contains zeolite, it is preferable to use a zeolite whose pore diameter exactly matches the size of the sulfur compound to be deodorized. For example, ZSM-5, mordenite, etc. are preferred. Furthermore, silver zeolite, copper zeolite, etc. in which the cations in the pores are replaced with metal ions can also be used.

(Production method)
The method for producing a deodorant composition for permed hair according to this embodiment includes the steps of preparing a solvent and dispersing deodorant powder in the solvent.

Note that when porous silica containing metal X is used as the deodorant powder, the porous silica can be produced, for example, by a method including the following steps.
(A) A step of mixing a solvent, a surfactant, and a compound for supplying metal X containing metal X to prepare a surfactant solution. (B) Adding a silica source to the surfactant solution, (C) A step of condensing the accumulated silica sources. (D) A step of collecting and firing the micelles after the condensation step.

Each step will be explained in detail below.

(A): Preparation of surfactant solution First, a surfactant and a compound for supplying metal X are added to a solvent to prepare a surfactant solution. The surfactant solution is preferably stirred at room temperature or higher and 200° C. or lower for 30 minutes or more and 10 hours or less. This causes the surfactant to form micelles.

For example, water can be used as the solvent. Further, a mixture of water and an organic solvent such as ethanol or toluene may be used as the solvent.

The amount of surfactant added is preferably 50 to 400 mmol/L, more preferably 50 to 150 mmol/L.
Alternatively, the amount of surfactant added is 0.01 to 5.0 mol, preferably 0.05 to 1.0 mol, per 1 mol of the silica source added later.

The surfactant is not particularly limited, and any cationic, anionic, or nonionic surfactant can be used.
Preferably the surfactant is neutral or cationic, more preferably an alkyl ammonium salt. The alkylammonium salt preferably has carbon atoms of 8 or more, and in view of industrial availability, those having 12 to 18 carbon atoms are more preferable. Alkylammonium salts include hexadecyltrimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, dodecyltrimethylammonium bromide, octadecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, octadecyltrimethylammonium bromide Examples include chloride, didodecyldimethylammonium bromide, ditetradecyldimethylammonium bromide, didodecyldimethylammonium chloride, ditetradecyldimethylammonium chloride, and the like. These surfactants may be used alone or in combination of two or more.

The metal X supplying compound is a substance that serves as a supply source of metal X contained in porous silica.
As the compound for supplying metal X, a water-soluble compound containing metal X is preferably used. More preferably, chlorides, nitrates, sulfates, etc. of metal X are used.

For example, when metal X is iron, iron(III) chloride or the like is added as a metal X-supplying compound.
For example, when metal X is copper, copper nitrate or the like is added as a metal X supplying compound.
For example, when the metal X is manganese, manganese chloride or the like is added as a metal X supplying compound.
For example, when metal X is nickel, nickel nitrate or the like is added as a metal X supplying compound.
For example, when metal X is silver, silver nitrate or the like is added as a metal X supplying compound.
For example, when metal X is zinc, zinc nitrate or the like is added as a metal X supplying compound.
For example, when metal X is platinum, hexachloroplatinic (IV) acid hexahydrate or the like is added as a metal-supplying compound.
Note that when the metal X is iron, copper, manganese, nickel, etc., the metal X is usually finally doped into the porous silica.
On the other hand, when the metal X is silver or platinum, the metal X is usually ultimately supported on the porous silica in the form of particles.

The amount of the metal

(B): Addition of silica source Subsequently, a silica source is added to the surfactant solution.

The silica source is not particularly limited as long as it is a raw material for silica, and examples thereof include tetraethoxysilane, tetramethoxysilane, tetra-n-butoxysilane, and sodium silicate. These silica sources may be used alone or in combination of two or more. The silica source is preferably an alkoxysilane.
The silica source is more preferably tetraethoxysilane. The organic functional groups on the silicon atoms are lost through hydrolysis and do not affect the structure of the composite. However, if the organic functional group is bulky, the hydrolysis rate will be slow and the synthesis time will be long.
When sodium silicate is used alone or in combination as a silica source, the surfactant solution is heated under reflux at 200° C. or lower for 20 to 2 hours.

The amount of the silica source added is not particularly limited, but is, for example, 0.2 to 1.8 mol/L. Alternatively, when the solvent contains water, the concentration of the silica source is, for example, 0.001 to 0.05 mol per mol of water.

(C): Condensation of silica source Next, the silica source is condensed. Specifically, the pH of the solution is increased or decreased until the silica source is condensed. For example, the silica source can be condensed by adding a basic aqueous solution and stirring. Stirring is performed for one hour or more, for example. By adding the basic aqueous solution, the silica source accumulated on the surface of the micelles is dehydrated and condensed to form a silica wall.
Examples of the basic aqueous solution include aqueous solutions of sodium hydroxide, sodium carbonate, ammonia, and the like. The basic aqueous solution is preferably an aqueous sodium hydroxide solution. These basic aqueous solutions may be used alone or in combination of two or more. Immediately after addition, the basic aqueous solution is added so that the pH becomes preferably 8 to 14, more preferably 9 to 11. The addition of the aqueous base solution accelerates the dehydration condensation reaction of the silica source.
As a result, the surface tension of the condensed portion increases, the silica wall becomes spherical, and the silica becomes spherical, forming a structure in which multiple spheres are joined together, causing spinodal decomposition (phase separation). Chemical crosslinking freezes these structures.

Note that the silica source has the property of condensing even in a low pH state. Therefore, the silica source can also be condensed by adding an acidic aqueous solution instead of a basic aqueous solution.

(D): Recovery and calcination of micelles Subsequently, micelles are recovered as a precursor from the aqueous solution. In particular, upon condensation of the silica source, micelles precipitate. Therefore, micelles are recovered as a precursor by filtering the precipitate. Dry the recovered precursor. After drying, the precursor is fired to remove organic components contained in the precursor. That is, the surfactant constituting the micelles is removed. This forms porous silica having pores. Note that the firing is performed at a temperature equal to or higher than the decomposition temperature of the surfactant. The firing temperature is, for example, 400 to 600°C.

The porous silica obtained by the above method contains metal X derived from the metal X supplying compound. That is, porous silica containing metal X is obtained.

In addition, in the above method, the example in which the compound for supplying metal X is added in step (A) has been described. However, the metal If the accumulated silica source and the metal X supplying compound are mixed in the solution, the metal X derived from the metal X supplying compound is incorporated into the silica source, and porous silica containing metal X is obtained.

In addition, when producing porous silica containing metal Y and/or metal Z in addition to metal X, at any stage before step (D), the metal Y supply A compound or a compound for supplying metal Z may be added.
The compound for supplying metal Y and the compound for supplying metal Z are substances that serve as supply sources for metal Y and metal Z, respectively. As the compound for supplying metal Y and the compound for supplying metal Z, water-soluble compounds containing metal Y or Z are preferably used. More preferably, chlorides, nitrates, sulfates, etc. of metal Y or metal Z are used.

For example, when metal Y is aluminum, aluminum chloride or the like is added as a metal Y supplying compound.
For example, when the metal Y is Zr, zirconium oxychloride or the like is added as a metal Y supplying compound.
For example, when metal Z is cobalt, cobalt nitrate or the like is added as a metal Z supplying compound.
For example, when the metal Z is Zn, zinc nitrate or the like is added as a metal Z supplying compound.
For example, when the metal Z is Ag, silver nitrate or the like is added as a metal Z supplying compound.
For example, when metal Z is Ca, calcium carbonate or the like is added as a metal Z-supplying compound.
The compound for supplying metal Y and the compound for supplying metal Z may be used alone, or two or more thereof may be used in combination.

The amount of the compound for supplying metal Y and the compound for supplying metal Z is, for example, 0.001 to 0.5 mol, preferably 0.01 mol to 0.1 mol, respectively, per 1 mol of the silica source.

(how to use)
The deodorant composition according to this embodiment is applied to hair after perm treatment.

Generally, during perm treatment, hair is first washed with shampoo or the like. The hair is then wrapped in curlers. Next, a chemical called perm agent 1 is applied to the hair. Perm agent 1 contains a reducing agent that breaks cystine bonds in hair. When the cystine bonds are broken by applying the perm agent 1, the hair conforms to the shape wound around the curler.
Then, a second perm agent is applied to the hair. The second perm agent contains an oxidizing agent. The cleaved cystine bonds are recombined by the oxidizing agent. This fixes the shape of the hair to the shape corresponding to the curler. It should be noted that an intermediate treatment agent (conditioner) may be applied between the time when the first perm agent is applied and the second perm agent is applied. Furthermore, after the application of the second permanent treatment agent, treatment with a post-treatment agent, rinsing, treatment, etc. may be performed.
Here, specific examples of the reducing agent included in the perm agent include sulfur-containing compounds such as cysteamine, thioglycolic acid, and cysteine. In addition, during the reaction process with hair, these substances may change in quality and generate sulfur-containing compounds such as thiazolidine. These sulfur-containing compounds have an odor. This odor is the object to be deodorized by the deodorant composition for permanently treated hair according to this embodiment.

In detail, the deodorant composition according to this embodiment can be used by being blended into, for example, the above-mentioned intermediate treatment agent, permanent treatment agent, post-treatment agent, rinse agent, treatment agent, and the like. Alternatively, the deodorant composition can also be used as a separate drug applied to the hair. Furthermore, for example, the deodorant composition can also be used as a drug added to shampoos used at home after perm treatment.
Moreover, the deodorant according to this embodiment can also be used in the form of hair spray, hair wax, and the like.

Further, the deodorant composition of this embodiment may be stored as a liquid composition or as a deodorant powder. In the latter case, the deodorant composition according to the present embodiment is prepared by adding deodorant powder to a solvent such as water or conditioner immediately before use, for example, at the site (such as a beauty salon).

As explained above, according to this embodiment, since the deodorant powder is dispersed in a solvent containing water, when the deodorant composition is applied to the hair, the deodorant powder adheres to the hair. . Since the deodorant is attached to the hair, the odor from the hair can be quickly removed. The deodorant powder adhering to the hair may or may not be washed away after exerting its deodorizing function.
Note that if the deodorant powder is left attached to the hair, it is possible to continue deodorizing the odor in the air.
Furthermore, if the deodorant powder contains activated carbon, silica, etc., it is possible to deodorize other odors other than sulfur-containing odors. For example, activated carbon, silica, and the like have the function of deodorizing acidic gases and basic gases other than sulfur-containing odors. Therefore, it is also possible to realize a deodorizing function against odors originating from other than perm treatments, such as sweat odor and body odor.

According to this embodiment, for example, a deodorant composition having a cysteamine deodorizing rate of 50 μg/mg or more per minute can be obtained. The cysteamine deodorization rate can be determined by the method measured in Examples described below.

In addition, according to this embodiment, since the substance having a deodorizing function is present in a powdered state, the deodorant powder can be easily separated and recovered from the wastewater at the drainage destination. Therefore, the burden required for wastewater treatment is reduced.

Note that the deodorant composition according to this embodiment may contain a fragrance or a hair protection component. When a fragrance or a hair protection ingredient is contained, when the deodorant composition is applied to the hair and left to stand, the fragrance or hair protection ingredient is gradually released. As a result, it is possible to realize not only a simple deodorizing function for sulfur-containing odors, but also other functions such as deodorizing body odor and scalp odor caused by fragrances and hair protection. These fragrances or hair protection ingredients may be contained in a form supported on a matrix such as porous silica, or may be added to the deodorant composition separately from the matrix. In order to incorporate a fragrance or a hair protection component into porous silica, there is a method such as adding the porous silica to a solution in which these components are dispersed, stirring the solution, and then distilling off the solvent by vacuum drying.

Furthermore, when porous silica doped with metal X is used as the deodorant powder, the following effects can also be obtained.
First, since porous silica is used, metal be able to.
In addition, porous silica itself also has deodorizing performance against odors other than sulfur-containing odors (acidic and basic odors). Therefore, it is also possible to deodorize odors other than sulfur-containing odors.
Moreover, porous silica easily adheres to hair. Therefore, it becomes easier for the deodorant to adhere to the hair. This makes it possible to more reliably exhibit the deodorizing effect of the metal X.

2: Second Embodiment In the first embodiment, an embodiment was described in which the deodorant composition contains a solvent and a deodorant powder. In contrast, in this embodiment, no solvent is used. That is, the deodorant powder itself is used as a deodorant. That is, in this embodiment, deodorant powder (deodorant composition) is sprinkled onto the hair. For example, deodorant powder is sprinkled onto damp hair. More specifically, deodorant powder is sprinkled on the hair during treatments such as treatments. As a result, the sprinkled deodorant powder adheres to wet hair, and as a result, the same effects as in the first embodiment are exhibited.

(Example)
Examples of the present invention will be described below. However, the present invention should not be construed as being limited to these Examples.
Deodorant powders according to Examples 1 to 5 were prepared by the following method. The specific surface area, mode diameter, and metal content of the obtained deodorant powder were measured. Additionally, a cysteamine adsorption test was conducted.
Further, the deodorant powders according to Examples 1 to 4 were dispersed in distilled water to obtain liquid deodorant compositions. A hair deodorization test was conducted on the obtained liquid deodorant composition. The preparation method and test method for each example are as follows.

Example 1
To water as a solvent, hexadecyltrimethylammonium chloride as a surfactant, manganese chloride as a compound for supplying metal Stirred. After cooling the aqueous solution to room temperature, tetraethoxysilane was added as a silica source and stirred. Next, sodium hydroxide was added as a condensation catalyst and stirred. The amount of each compound added was as follows with respect to 1 mole of tetraethoxysilane.
Surfactant (hexadecyltrimethylammonium chloride): 0.225 mol Metal X supplying compound (manganese chloride): 0.0118 mol Metal Y supplying compound (aluminum chloride): 0.0241 mol Metal Z supplying compound (nitric acid) Cobalt): 0.011 mol Water: 125 mol Sodium hydroxide: 0.195 mol The solid product is filtered from the resulting suspension, dried, and then calcined to remove organic components. I got it. This was used as the deodorant powder according to Example 1.

Example 2
A deodorant powder according to Example 2 was obtained in the same manner as in Example 1. However, copper nitrate was added as a compound for supplying metal X, and aluminum chloride was added as a compound for supplying metal Y. No metal Z feeding compound was added. Further, the amount of each compound added was as follows.
Surfactant (hexadecyltrimethylammonium chloride): 0.225 mol Metal X supplying compound (copper nitrate): 0.0204 mol Metal Y supplying compound (aluminum chloride): 0.0482 mol Water: 125 mol Sodium hydroxide :0.195 mol A deodorant according to Example 2 was prepared in the same manner as in Example 1 in other respects.

Example 3
Activated carbon manufactured by Tokyo Kasei (catalog code: C2194) was prepared as a deodorant powder according to Example 3.

Example 4
Kesmon NS20C (trade name) (silicate-containing powder) manufactured by Toagosei was prepared as the deodorant powder according to Example 4.

Example 5
Iron chloride was added as a metal X supplying compound. The amount of each compound added per 1 mole of tetraethoxysilane was set as follows.
Surfactant (hexadecyltrimethylammonium chloride): 0.225 mol Metal X supplying compound (iron chloride): 0.0537 mol Metal Y supplying compound (aluminum chloride): 0.0241 mol Water: 125 mol Sodium hydroxide : 0.195 mol A deodorant according to Example 6 was prepared in the same manner as in Example 1 in other respects.

Specific surface area measurement method: Using Flowsorb II 2300 manufactured by Micromeritics, the specific surface area was measured by a one-point method at liquid nitrogen temperature.

Method for Measuring Mode Diameter The mode diameter was measured using a laser diffraction particle size distribution analyzer SALD-3100 manufactured by Shimadzu Corporation.

Method for measuring the content of metals X and Y was measured using ICP-OES manufactured by Thermo Scientific. It is thought that by treatment with hydrochloric acid, all the metal components contained in the deodorant powder are dissolved in the hydrochloric acid. Therefore, based on the measurement results, the content of each metal present in the deodorant powder was calculated as the amount of metal.

Cysteamine adsorption test 0.5896 g of cysteamine was weighed out and diluted with ultrapure water using a 10 ml volumetric flask to obtain solution 1-1. The cysteamine concentration in this solution 1-1 is 5.85 wt%, which is equivalent to the concentration of the perm solution stock solution.
10 mg of the deodorant powder to be measured was weighed into a centrifuge tube. 0.9 ml of water was added to the tube and shaken well to form a uniform dispersion. 0.1 ml of solution 1-1 was added to the dispersion, and the mixture was shaken well for 30 seconds to react. The cysteamine concentration before the reaction was 7.64×10 ⁻² mol/L, and the initial amount of cysteamine was 5.89 mg. A centrifugation process was performed for 90 seconds. The supernatant was immediately taken out, and the absorbance of the reaction solution at 235 nm was measured.
From the measurement of the calibration curve, a proportional relationship is established between the absorbance at 235 nm and the cysteamine concentration in the range of cysteamine concentration from 7.5 × 10 ^-4 mol/L to 1.2 × ^{10 -4} mol/L. It was confirmed. Therefore, the reaction solution was appropriately diluted using an autopipette so that the concentration fell within this range, and the absorbance at 235 nm was measured. From the results, the residual concentration of cysteamine was calculated using the following formula 1. Moreover, the value of adsorption rate was calculated using the following formula 2.

(Formula 1) Residual concentration = Constant x Absorbance at 235 nm x Dilution factor (Formula 2) Adsorption rate (%) = (Initial concentration - Residual concentration) / Initial concentration x 100

Furthermore, the capacity etc. were calculated from the following formulas 3 to 6.
(Formula 3) Adsorption amount (mg) = Adsorption rate (%) x Initial amount of cysteamine (mg)/100
(Formula 4) Amount of metal X (mg) = Amount of deodorant powder (mg) x Amount of metal X metal (wt%)/100
(Formula 5) Capacity (mg/Metal X mg) = Adsorption amount (mg)/Metal X amount (mg)
(Formula 6) Cysteamine deodorization rate (μg/mg/min) = (adsorption amount (mg) x 1000 (μg/mg))/(deodorant amount (mg) x 2 (min))

Note that the following absorbance measuring device was used.
Absorbance measuring device: Corona absorption grating microplate reader SH-1000 (manufactured by Corona Electric Co., Ltd.), plate: UV Flat Bottom Microtite (registered trademark) Plates (manufactured by Thermo), measurement range: 200 to 600 nm, response: 3

The measurement results are shown in Table 1. As shown in Table 1, it was confirmed that all of the deodorant powders according to Examples 1 to 5 had the function of adsorbing cysteamine in water.

Hair deodorization test Preparation of deodorant composition To distilled water, the deodorant powders of Examples 1 to 4 were added at an addition rate of 2 wt%, and the desired amount was added with hydrochloric acid and sodium hydroxide. The pH was adjusted accordingly. As a result, a plurality of deodorant compositions having different pHs were obtained for each of Examples 1 to 4.

Permanent waving treatment 4 ml of the first agent for permanent waving was applied to 2 g of Japanese hair using an autopipette. The coated hair was wrapped in Saran Wrap (registered trademark) and left in a dryer set at 45° C. for 15 minutes. Next, the hair was rinsed in 1 L of distilled water for 10 seconds, further rinsed with running distilled water for 10 seconds, and the moisture was gently removed using an industrial rag (Kim Towel, manufactured by Nippon Paper Crecia Co., Ltd., trade name).
The composition of the first permanent wave agent was as follows.
Cysteamine hydrochloride: 7g
EDTA・2Na: 0.2g,
Ammonia water (28%): 4.5ml,
Distilled water: 93g

Deodorizing treatment 2 ml of each of the prepared deodorant compositions was applied to the hair subjected to the above permanent wave treatment using an autopipette. It was wrapped in Saran Wrap (registered trademark) and left at room temperature for 5 minutes. Rinse for 10 seconds in 1L of distilled water, rinse again for 10 seconds in running distilled water, and lightly remove moisture with an industrial rag (Kim Towel, manufactured by Nippon Paper Crecia Co., Ltd., trade name). Dry with a hair dryer.

Evaluation of Deodorizing Treatment The hair after the deodorizing treatment was compared by sniffing and comparing the odor intensity, and the presence or absence of unpleasant odor of the hair was evaluated on the following five scales.
1: I don't feel any unpleasant odor 2: I hardly feel any unpleasant odor 3: I feel a weak unpleasant odor 4: I feel an unpleasant odor 5: I feel a strong unpleasant odor 5".

The deodorizing treatment was evaluated by a panel of two people. Furthermore, for each example, two bundles of hair were prepared and evaluated with n=2. The average value of data from a total of 4 points (2 hair points x 2 panelists) was determined as the result.

Table 1 shows the results of the hair deodorization test. The hair treated with the deodorant composition obtained by mixing the deodorant powder according to Examples 1 to 4 with water as a solvent showed that the hair treated with the deodorant composition obtained by mixing the deodorant powder according to Examples 1 to 4 with water as a solvent was compared to hair that was not subjected to deodorizing treatment. Unpleasant odor was significantly reduced.

Observation of the hair surface The hair surface after the permanent wave treatment and the deodorization treatment was observed using an electron microscope S-4800 manufactured by Hitachi High-Tech. The observation was performed on a deodorant composition prepared to have a pH of 7.5 using the deodorant powder according to Example 2. The results are shown in Figure 1. As shown in FIG. 1, it was confirmed that minute deodorant powder remained on the surface of the hair that had been subjected to the deodorizing treatment.

Claims (10)

A deodorant composition for permanently treated hair, which contains a deodorant powder having the function of adsorbing sulfur-containing compounds. Furthermore, it contains a solvent,
the deodorant powder is dispersed in the solvent;
The deodorant composition according to claim 1. The deodorant composition according to claim 2, wherein the pH of the solvent is 3 to 12. The deodorant composition according to claim 2 or 3, wherein the content of the deodorant powder is 0.001 to 50% by mass. The deodorant composition according to any one of claims 2 to 4, wherein the cysteamine deodorizing rate is 50 μg/mg per minute or more. The deodorant powder according to any one of claims 1 to 5, wherein the deodorant powder is a powder containing at least one metal X selected from the group consisting of manganese, copper, nickel, silver, zinc, platinum, and iron. Odor composition. The deodorant powder contains porous silica,
The deodorant composition according to claim 6, wherein the metal X is doped in the porous silica or supported as particles. The deodorant composition according to any one of claims 1 to 6, wherein the deodorant powder contains activated carbon, a silicate, a tetravalent metal phosphate, or a zeolite. a step of preparing a solvent;
Dispersing deodorant powder in the solvent;
Equipped with
A method for producing a deodorant composition for permed hair. a step of perming the hair;
a step of applying the deodorant composition according to any one of claims 1 to 8 to the hair,
How to deodorize hair.