JP2012125728A - Method for manufacturing toiletry product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing water for manufacturing a toiletry product which does not cause changes in quality of a sensitive compound, such as a dye and a perfume, due to a hypochlorite by deactivating the hypochlorite in sterile water obtained through a treatment by the hypochlorite.SOLUTION: The method for manufacturing the water for manufacturing the toiletry product includes adding an isothiazolone compound to the water that contains the hypochlorite, and deactivating the hypochlorite in the water.

Description

  The present invention relates to a method for producing water for producing toiletry products, and a method for producing toiletry products.

Antibacterial measures are important for the production of water-containing toiletries such as liquid softeners and liquid deodorants. This is because, when a water-containing toiletry product is manufactured, if it is shipped and sold in a state where germs are mixed, the germs grow in the product, causing discoloration and a change in odor. Therefore, management of water at the time of manufacture is carefully performed, and generally, in many cases, water is left at a high temperature of 80 ° C. or more for several hours to perform sterilization operation and used for manufacturing products. In such high-temperature sterilization operation, a large amount of energy is required to heat water. However, in recent years, since manufacturers are required to reduce CO ₂ emissions, water sterilization technology with low energy consumption is required. Is required.

  In order to solve this problem, a hypochlorite having a bactericidal effect is added to water at room temperature in the order of several mg / kg (usually about 2 to 10 mg / kg) and left to sterilize for several hours. Less water sterilization techniques have been proposed and are already in practical use. However, when sterilized water obtained through such sterilization techniques is used in the manufacture of toiletry products, compounds that are sensitive to hypochlorite, such as dyes and fragrances [hereinafter referred to as “hypochlorite sensitive compounds” or It has been found that there is a problem that such a sensitive compound is altered (for example, discoloration or aroma alteration) due to the action of hypochlorite in water when a "sensitive compound" is simply introduced.

  On the other hand, in toiletry products such as liquid softeners, isothiazolone compounds such as 1,2-isothiazolin-3-one represented by Proxel BDN (registered trademark) are known substances as antibacterial agents (Patent Document 1). And 2).

JP 2000-64180 A JP 2000-355652 A

  An object of the present invention is to deactivate hypochlorite in sterilized water obtained through treatment with hypochlorite, so that even if a hypochlorite sensitive compound is added, An object of the present invention is to provide a method for producing water for producing toiletry products that does not cause alteration, and thus a method for producing toiletry products that do not cause alteration of such sensitive compounds.

  As a result of intensive studies on the above problems, the present applicant has an effect of deactivating hypochlorite contained in water by an isothiazolone compound that has been conventionally only incorporated in toiletry products as an antibacterial agent. As a result, the present invention has been completed.

  That is, this invention relates to the manufacturing method of the water for toiletry product manufacture which adds an isothiazolone compound to the water containing a hypochlorite, and deactivates the hypochlorite in water.

  The present invention also relates to a method for producing a toiletry product, wherein water for producing a toiletry product is produced by the above production method, and then a hypochlorite sensitive compound is added to the water for producing the toiletry product.

  According to the present invention, the hypochlorite in the sterilized water obtained through the treatment with hypochlorite is deactivated so that even if a hypochlorite sensitive compound is added, It is possible to provide a method for producing water for producing a toiletry product that does not cause alteration, and thus a method for producing a toiletry product that does not cause alteration of such sensitive compounds. According to the production method of the present invention, hypochlorite-sensitive compounds (for example, dyes and fragrances) do not cause discoloration or fragrance alteration, so hypochlorite with low energy consumption in the production field of toiletry products containing water. The advantages of the acid sterilization technique can be enjoyed more.

  Before discussing in detail the configuration of the present invention, note the meaning of the following terms. That is, in the present invention, the term “hypochlorous acid-sensitive compound” (or simply “sensitive compound”) refers to a compound that is altered by the redox action of hypochlorite. Examples of such sensitive compounds include dyes and fragrances. For example, when the dye is altered by the redox action of hypochlorite, discoloration or discoloration occurs. In addition, when the fragrance is altered, the fragrance tone changes or the intensity of the fragrance becomes weak.

  In the present invention, the term “deactivation” means that the concentration of hypochlorite present in water is reduced to a level that does not cause alteration of the hypochlorite-sensitive compound. Depending on the type of hypochlorite sensitive compound, for example, if the concentration of hypochlorite in water is 1.5 mg / kg or less, the hypochlorite sensitive compound is less likely to be altered. If the hypochlorite concentration is 0.8 mg / kg or less, further 0.6 mg / kg or less, and particularly 0.3 mg / kg or less, the sensitive substance is not altered.

  In the present invention, the term “toiletries containing water” or simply “toiletries” refers to detergent products for homes, kitchens, clothes, laundry aids for clothes (for example, liquid softeners or liquid pastes). Product) and deodorant product, which contains water as a constituent. Specific examples of these toiletry products include liquid detergents, liquid softening finishes, and liquid deodorants.

  In the present invention, the term “water for manufacturing a toiletry product” refers to water that is a constituent component of the “toiletry product” and refers to raw water used for manufacturing the “toiletry product”.

<Isothiazolone compounds>
Examples of the isothiazolone compound that can be suitably used in the present invention include compounds represented by the following general formula (1).

[Wherein, R represents a hydrogen atom, an alkyl group, a cycloalkyl group or an aralkyl group. Y and Z each independently represent a hydrogen atom or a halogen atom, or Y and Z together form a 5-membered or 6-membered ring with a carbon-carbon double bond between Y and Z. C3 or C4 carbon atom chain. ]

  In General formula (1), as an alkyl group of R, a C1-C12 alkyl is preferable and a C1-C8 alkyl group is more preferable. Specific examples of such an alkyl group include a methyl group, an ethyl group, an n-butyl group, and a t-octyl group.

  In the general formula (1), the cycloalkyl group represented by R is preferably a cycloalkyl group having 3 to 12 carbon atoms, and more preferably a cycloalkyl group having 3 to 8 carbon atoms. A preferred example of such a cycloalkyl group is a cyclohexyl group.

  In the general formula (1), preferable examples of the aralkyl group of R include benzyl group, diphenylmethyl group, trityl group, p-nitrobenzyl group, p-methoxybenzyl group and bis (p-methoxyphenyl) methyl group. Etc.

  From the viewpoint of the effect of deactivating hypochlorite, R in the general formula (1) is particularly preferably a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and most preferably a hydrogen atom.

  In general formula (1), as a halogen atom of Y and Z, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom can be used suitably, and it is chlorine from a viewpoint of the effect of deactivating hypochlorite. An atom is preferred.

  In general formula (1), when Y and Z together form a 5-membered or 6-membered ring with a carbon-carbon double bond between Y and Z, hypochlorite is deactivated. From the viewpoint of effect, it is preferable to form a 6-membered ring, and it is particularly preferable to form a benzoisothiazolone skeleton together with an isothiazoline-3-one skeleton (that is, an isothiazolone skeleton).

  Preferable specific examples of the compound represented by the general formula (1) include, for example, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 2- n-octyl-4-isothiazolin-3-one, 4,5-dichloro-2-n-octylisothiazolin-3-one, 2-ethyl-4-isothiazolin-3-one, 4,5-dichloro-2-cyclohexyl -4-isothiazolin-3-one, 5-chloro-2-ethyl-4-isothiazolin-3-one, 5-chloro-2-t-octyl-4-isothiazolin-3-one, 4,5-trimethylene-4 -Isothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, or 2-n-butyl-1 2-benzisothiazolin-3-one and the like. Among them, from the viewpoint that hypochlorite can be deactivated at a high level, a benzoisothiazolone derivative (specifically, 1,2-benzisothiazolin-3-one or 2-n-butyl-1,2-benzisothiazoline) -3-one), 5-chloro-2-methyl-4-isothiazolin-3-one, or 2-methyl-4-isothiazolin-3-one is more preferred, and benzoisothiazolone derivatives are particularly preferred. -Benzoisothiazolin-3-one is most preferred.

<Method for producing water for toiletry product production>
In the present invention, hypochlorite in water is deactivated by adding the above isothiazolone compound to water containing hypochlorite obtained through sterilization treatment with hypochlorite. Can be made.

  Hypochlorite, which should be deactivated, is not particularly limited as long as it exhibits antibacterial and antifungal effects, but is commonly used for water sterilization in the field of toiletry products. Preferable examples include alkali metal salts or alkaline earth metal salts of hypochlorous acid, and specific examples include sodium hypochlorite or potassium hypochlorite. In addition, tap water and ion-exchange water can be suitably used as water that is subjected to sterilization treatment with hypochlorite (that is, water before sterilization).

  The isothiazolone compound may be added singly or as a mixture with water and / or alcohol. From the viewpoint of efficiently deactivating hypochlorite, it can be added with water and / or alcohol. It is preferable to add as a mixture. Here, as alcohol, C2-C3 alcohol, such as ethanol and isopropanol, can be used conveniently.

  When the isothiazolone compound is added as a mixture with water and / or alcohol, the content of the isothiazolone compound in the mixture is not particularly limited, but is preferably 0.03 to 30% by mass, more preferably 0. It is suitable that it is 3-20 mass%.

  When the isothiazolone compound is added as a mixture with water, it is preferable to adjust the pH of the water to more than 8 using an alkaline agent from the viewpoint of uniformly dissolving the isothiazolone compound in water. Alkali agents that can be suitably used include alkali metal or alkaline earth metal hydroxides, and specific examples include sodium hydroxide and potassium hydroxide. Alternatively, the isothiazolone compound may be solubilized in water using a known surfactant or solvent. Examples of the surfactant that can be suitably used include nonionic surfactants and anionic surfactants, and examples of the solvent include 1 to 6-valent alcohols having 1 to 6 carbon atoms such as ethanol, isopropanol, Examples include ethylene glycol, glycerin, and propylene glycol.

  If the concentration of hypochlorite in water is in the range of 2 mg / kg to 3% by mass, the deactivation effect of hypochlorite due to the addition of the isothiazolone compound can be enjoyed. From the viewpoint of effectively deactivating hypochlorite, the concentration of hypochlorite in water is preferably 2 mg / kg to 1% by mass. In the field of manufacturing toiletry products containing water, water sterilized through treatment with hypochlorite usually contains 2 mg / kg to 10 mg / kg of hypochlorite, and by adding an isothiazolone compound The effects of the present invention can be enjoyed preferably. In addition, in this invention, the density | concentration of hypochlorite is a density | concentration value of the effective chlorine measured according to the effective chlorine measuring method as described in the following Example.

  In order to achieve the effect of the present invention, it is important to set the addition mass ratio of the isothiazolone compound to the hypochlorite within a specific range. That is, the addition amount of the isothiazolone compound is preferably in the range of mass ratio of isothiazolone compound / hypochlorite = 1 to 200, from the viewpoint of effectively deactivating hypochlorite in water, The mass ratio of isothiazolone compound / hypochlorite is more preferably in the range of 2 to 100.

  The temperature at which the isothiazolone compound is added to inactivate hypochlorite in water is not particularly limited, but hypochlorite sterilization technology that can sterilize water at room temperature. In order to take advantage of the advantage, it is preferable to perform the treatment in the range of 5 to 30 ° C. Moreover, in the manufacture of toiletry products, when it is necessary to raise the temperature of the water for manufacturing toiletry products to 40 to 70 ° C, the treatment can be performed in the range of 40 ° C to 70 ° C.

  The treatment time when deactivating hypochlorite in water by adding an isothiazolone compound varies depending on the concentration of hypochlorite in water and the mass ratio of isothiazolone compound / hypochlorite, Usually, it is preferable to process for 10 seconds or more. In terms of production efficiency of toiletry products, the treatment time is preferably within 2 hours, and more preferably in the range of 1 minute to 60 minutes.

  In order to deactivate hypochlorite in water by adding an isothiazolone compound, water containing hypochlorite does not need to be specifically stirred, but hypochlorite can be effectively deactivated. From the viewpoint, it is preferable to treat with stirring.

  The water for producing toiletry products obtained by the production method of the present invention does not cause discoloration or fragrance alteration of such sensitive compounds even when hypochlorite sensitive compounds such as dyes and fragrances are added. Therefore, the advantage of the sterilization technique using hypochlorite with low energy consumption can be further enjoyed.

<Manufacturing method of toiletries>
According to the method for producing a toiletry product of the present invention, an isothiazolone compound is added to water containing hypochlorite obtained by sterilization with hypochlorite according to the above <Method for producing water for toiletry product production>. After adding and deactivating hypochlorite to produce “water for producing toiletry products”, a hypochlorite-sensitive compound is added to the water for producing toiletries.

  Here, the use mode of the isothiazolone compound for inactivating hypochlorite in the present invention is completely different from the use mode of the isothiazolone compound as an antibacterial agent in the production of conventional toiletry products. Please keep in mind. Taking a liquid softener as an example of a toiletry product, with regard to the conventional method of using an isothiazolone compound as an antibacterial agent, it is usually classified into sterilized water obtained through treatment with hypochlorite, first grade, After compounding an amine compound containing a secondary or tertiary amino group in the molecule (ie, a soft base), together with sensitive compounds such as dyes and fragrances, or even later than sensitive compounds such as dyes and fragrances Contains an isothiazolone compound. In such a conventional method of use, the added isothiazolone compound sufficiently exhibits the function as an antibacterial agent, but deactivates hypochlorite to suppress the alteration of the hypochlorite sensitive compound. The effect of the present invention is not achieved. In contrast, in the usage mode of the isothiazolone compound in the present invention, hypochlorite is effectively lost by first adding the isothiazolone compound to the sterilized water obtained through the treatment with hypochlorite. It is possible to suppress the alteration of the sensitive compound incorporated afterwards. Management of sterilized water becomes a problem due to inactivation of hypochlorite, but management is easy because the isothiazolone compound itself exhibits a function as an antibacterial agent.

  Thus, in the method for producing a toiletry product according to the present invention, it is important to first add an isothiazolone compound to water containing hypochlorite in the absence of a sensitive compound. In the production of a liquid softening agent, not only sensitive compounds but also amine compounds containing a primary, secondary or tertiary amino group in the molecule do not exist (that is, these sensitive compounds and Before adding the amine compound; more specifically, water sterilized after treatment with hypochlorite), it is important to add the isothiazolone compound to effectively deactivate the hypochlorite It is.

  In adding the hypochlorite-sensitive compound, the temperature of “water for toiletry product production” is not particularly limited, and may be appropriately set according to the type of toiletry product. It is preferable to add in the range.

  In the method for producing a toiletry product of the present invention, in addition to hypochlorite-sensitive compounds such as dyes and fragrances, components that are usually used during the production of the product can be further blended depending on the type of toiletry product to be produced. This will be understood by those skilled in the art. For example, in the production of a liquid softening agent, an amine compound containing a primary, secondary or tertiary amino group in the molecule (ie, a softening base), a nonionic surfactant, silicone A compound, an organic solvent such as ethanol, and the like can be blended. Moreover, when manufacturing a liquid detergent, a builder component, an enzyme, etc. can be mix | blended with surfactant which is a washing | cleaning main base. In the case of producing a liquid deodorant, an organic solvent such as cyclodextrin and ethanol, an antifoaming agent and the like can be blended.

  The toiletry product obtained by the production method of the present invention does not cause discoloration or fragrance alteration of hypochlorite sensitive compounds such as dyes and fragrances due to hypochlorite in raw water (sterile water) The desired quality can be realized advantageously.

The isothiazolone compounds, dyes and softening bases used in the examples are as follows.
Isothiazolone compound (1): 1,2-benzisothiazoline-3-one (manufactured by Abyssia)
Isothiazolone compound (2): 2-n-butyl-1,2-benzisothiazoline-3-one (manufactured by Avicia Co., Ltd.)
Isothiazolone compound (3): 5-chloro-2-methyl-4-isothiazolin-3-one (manufactured by Avicia)
Dye: Color Index Acid Blue No. 9 (food blue No. 1, manufactured by Hodogaya Chemical Co., Ltd.)
Soft base: soft base obtained in Synthesis Example 1 below

Synthesis example 1
In a 500 ml four-necked flask equipped with a stirring blade (2 cm in diameter), a thermometer, and a condenser that traps water produced by the reaction, 141 g (0.5 mol) of stearic acid (molecular weight 284) and N-methyl 28.6 g (0.24 mol) of diethanolamine (molecular weight 119) was added. Next, the four-necked flask was placed on a mantle heater, and the temperature was raised to 160 to 165 ° C. while stirring at 200 r / min. After 12 hours, the mantle heater was removed from the four-necked flask and allowed to cool naturally until the temperature of the reaction product reached 70 ° C., and 90% by mass of N, N-distearoyloxyethyl-N-methylamine as the main component. The containing soft base was obtained.

Examples 1 to 6 and Comparative Example 1
Sodium hypochlorite-containing water having the composition shown in Table 1 was prepared by the following method, and the sodium hypochlorite concentration was measured according to the following method. To the obtained sodium hypochlorite-containing water, an isothiazolone compound-containing composition having the composition shown in Table 1 is added at a ratio shown in Table 1 to produce water for toiletry product production, and hypochlorous acid is produced in the following manner. The inactivation effect of sodium was evaluated. The results are shown in Table 1.
In the following description, “%” means “mass%” unless otherwise specified.

<Preparation of water containing sodium hypochlorite>
Into a 3 L glass beaker, 0.21 g of sodium hypochlorite solution (manufactured by Kanto Chemical Co., Inc., effective chlorine concentration of 5.0% by mass or more) is added and diluted with 2999.79 g of ion-exchanged water. 3000 g of sodium acid-containing water was obtained.

<Measurement method of sodium hypochlorite concentration>
In a 3 L transparent glass beaker, 3000 g of sodium hypochlorite-containing water prepared according to the method of <Preparation of sodium hypochlorite-containing water> was weighed. Subsequently, 10 ml of 10% potassium iodide was added, and the mixture was stirred for 1 minute at 25 ° C. using a stirrer piece. Next, after adding 10 ml of 20% sulfuric acid aqueous solution and stirring for 1 minute, 1 / 50N sodium thiosulfate was dripped until the appearance (yellow before dripping) of sodium hypochlorite containing water became transparent. In order to facilitate the observation of changes in the appearance of the liquid, white paper was placed on the opposite side of the glass beaker, and the background of the sodium hypochlorite-containing water was white. The sodium hypochlorite concentration was calculated as the effective chlorine concentration according to the following formula.

Effective chlorine concentration [mg / kg] = [Suitable amount of sodium thiosulfate [ml] × Regular number of sodium thiosulfate [N] × 35.5 (chlorine molecular weight)] / 3

<Evaluation of sodium hypochlorite deactivation effect>
In a 3 L glass beaker, 3000 g of sodium hypochlorite-containing water prepared according to the above method <Preparation of sodium hypochlorite-containing water> was added. Subsequently, the isothiazolone compound containing composition of Table 1 was added in the ratio of Table 1, and it stirred at 25 degreeC for 5 minutes using the stirrer piece. For comparison, a comparative experiment was also conducted in which a composition containing no isothiazolone compound was added and stirred under the same conditions (Comparative Example 1). After stirring, the sodium hypochlorite concentration was measured in the same manner as in the above <Method for measuring sodium hypochlorite concentration>. Table 1 shows relative values when the sodium hypochlorite concentration of Comparative Example 1 is 100.

Example 7
In a 3 L transparent glass beaker, 3000 g of sodium hypochlorite-containing water (X) having a composition shown in Table 2 and 7.5 g of an isothiazolone compound-containing composition (Y) were put, and at 25 ° C. using a stirrer piece. Stir for 1 minute. Next, 10.5 g of dye-containing water (Z) having the composition shown in Table 2 was added, and the mixture was further stirred for 1 minute.
About the obtained liquid mixture, when the light absorbency in 429 nm was measured using the ultraviolet visible spectrophotometer (Shimadzu Corp. make, UV-2500; quartz cell, optical path length 1cm, a control cell uses ion-exchange water). The absorbance was 0.40, and the residual ratio of the dye was 98%. Here, the residual ratio of the dye is a value calculated by using the absorbance value “0.41” in the following Reference Example as a reference absorbance value with a residual ratio of 100%.
Further, as a result of measuring the sodium hypochlorite concentration in the final mixed solution obtained by using ion-exchanged water (no dye) instead of the dye-containing water (Z) in this operation and performing the same operation, The deactivation of hypochlorite was confirmed at 21 mg / kg.

Comparative Example 2
In place of 7.5 g of the isothiazolone compound-containing composition (Y), a mixed solution was obtained in the same manner as in Example 7 except that 7.5 g of 1% sodium hydroxide aqueous solution (without isothiazolone compound) was used. Measurement and measurement of sodium hypochlorite concentration were performed.
The absorbance at 429 nm of the obtained mixed solution was 0.03, and the residual ratio of the dye was 8%. Moreover, the sodium hypochlorite density | concentration in a liquid mixture was 3.5 mg / kg, and the deactivation of a hypochlorite was not confirmed.

Comparative Example 3
Example 7 except that 3000 g of sodium hypochlorite-containing water (X) and 10.5 g of dye-containing water (Z) were first mixed, and then 7.5 g of the isothiazolone compound-containing composition (Y) was added and mixed. In the same manner, a mixed solution was obtained, and the absorbance and sodium hypochlorite concentration were measured.
The absorbance of the obtained liquid mixture was 0.03, and the residual ratio of the dye was 8%. Moreover, the sodium hypochlorite density | concentration in a liquid mixture was 3.5 mg / kg, and the deactivation of a hypochlorite was not confirmed.

Reference Example 1 (Standard of dye residual ratio calculated in Example 7 and Comparative Examples 2-3)
In a 3 L transparent glass beaker, 3000 g of ion-exchanged water and 7.5 g of an isothiazolone compound-containing composition (Y) having the composition shown in Table 2 were placed, and stirred at 25 ° C. for 1 minute using a stirrer piece. Next, 10.5 g of dye-containing water (Z) having the composition shown in Table 2 was added, and the mixture was further stirred for 1 minute.
The absorbance at 429 nm of the obtained mixed solution was 0.41. This absorbance value was adopted as a reference absorbance value with a dye residual ratio of 100%.

  Table 2 summarizes the results of Example 7 and Comparative Examples 2-3. For reference, the results of Reference Example 1 are also shown.

Example 8
In a 500 mL transparent glass beaker, 300 g of sodium hypochlorite-containing water (X) having the composition shown in Table 3 was added, and then 0.75 g of the isothiazolone compound-containing composition (Y) was added. The mixture was stirred for 1 minute at 0 ° C. to obtain toiletry product manufacturing water. This glass beaker is placed in a water bath adjusted in the temperature range of 60 to 65 ° C., and a stirring blade with three blades with a blade length of 1.5 cm is placed at a location 1 cm from the bottom of the beaker. Then, while stirring at 150 r / min, the temperature of the water for producing the toiletry product was raised so as to be in the temperature range of 60 to 65 ° C. Next, 1.05 g of dye-containing water (Z) having the composition shown in Table 3 was added and stirred for 1 minute. 15 g of the soft base obtained in Synthesis Example 1 was added, stirred for 1 minute, and adjusted to pH 3.0 using a 1N aqueous hydrochloric acid solution. Further, after stirring for 5 minutes, the water bath at 60 to 65 ° C. was replaced with a 5 ° C. water bath, and the contents were cooled to 30 ° C. to obtain a liquid softener as a toiletry product. As a result of visually observing the appearance of the obtained liquid softening agent, it was the same as the degree of coloring (blue) of the liquid softening agent produced in Reference Example 2 below. The appearance was judged by a researcher engaged in the development of liquid softeners for over 5 years.

Comparative Example 4
Water for toiletry product production was obtained in the same manner as in Example 8 except that 0.75 g of a 1% aqueous sodium hydroxide solution (not containing isothiazolone compound) was used instead of 0.75 g of the isothiazolone compound-containing composition (Y). .
A liquid softening agent, which is a toiletry product, was obtained in the same manner as in Example 8 using the obtained water for manufacturing a toiletry product. As a result of visually observing the appearance of the obtained liquid softening agent, it was a white turbid appearance that had a slightly lower bluish color than the softening agent (blue) produced in Reference Example 2 below. .

Comparative Example 5
First, the same procedure as in Example 8 was conducted except that 300 g of hypochlorite-containing water (X) and 1.05 g of the aqueous dye solution (Z) were mixed and then 0.75 g of the isothiazolone compound (Y) was added and mixed. A liquid softener was obtained. As a result of visually observing the appearance of the obtained liquid softening agent, compared with the coloring (blue) of the softening agent produced in Reference Example 2 below, the liquid softening agent hardly appears blue and has a slightly cloudy appearance. there were.

Reference example 2 (standard of appearance used in Example 8 and Comparative Examples 4 to 5)
A liquid softening agent was obtained in the same manner as in Example 8 except that ion-exchanged water was used instead of 300 g of sodium hypochlorite-containing water (X). The appearance of this liquid softening agent was used as a reference.

  Table 3 shows the results of Example 8 and Comparative Examples 4 to 5. For reference, the results of Reference Example 2 are also shown.

Claims (5)

  A method for producing water for the production of toiletry products, comprising adding an isothiazolone compound to water containing hypochlorite to deactivate the hypochlorite in water. The manufacturing method of the water for toiletry product manufacture of Claim 1 whose isothiazolone compound is a compound which has a structure represented by following General formula (1).

[Wherein, R represents a hydrogen atom, an alkyl group, a cycloalkyl group or an aralkyl group. Y and Z each independently represent a hydrogen atom or a halogen atom, or Y and Z together form a 5-membered or 6-membered ring with a carbon-carbon double bond between Y and Z. C3 or C4 carbon atom chain. ]   The method for producing water for producing toiletry products according to claim 1 or 2, wherein the isothiazolone compound is added at a mass ratio of isothiazolone compound / hypochlorite = 1 to 200.   The manufacturing method of toiletry products which manufactures the water for toiletry product manufacture by the manufacturing method of any one of Claims 1-3, and then adds a hypochlorite sensitive compound to this water for toiletry product manufacture. The method for producing a toiletry product according to claim 4, wherein the hypochlorite sensitive compound is a compound selected from dyes and fragrances.