Method for producing cleanser

Abstract

To provide a novel production method capable of improving the production efficiency in production of a cleanser using a raw material requiring heating and dissolution.SOLUTION: There is provided a method for producing a cleanser, which has (I) a step of preparing a raw material composition and (II) a step of preparing a cleanser at a normal temperature using the raw material composition. The step I has (i) a step of adding 3 to 10 mass% of salts (D) in the raw material composition into 10 to 30 mass% of an anionic surfactant (A) in the raw material composition; (ii) a step of adding 0.7 to 3 mass% of a cationic polymer (C) in the raw material composition into the composition of the step (i); (iii) a step of mixing the composition of the step (ii) at 50 to 100°C; (iv) a step of adding 5 to 20 mass% of a nonionic surfactant (B) in the raw material composition to the composition of the step (iii); and (v) a step of mixing the composition of the step (iv) at 50 to 100°C.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for producing a cleaning agent using a pre-prepared raw material composition. [Background technology]

[0002] In the production of cleansing agents such as shampoo, many raw materials are used that require heating and dissolving. In particular, shampoos containing pearlizing agents require many raw materials, such as thickeners, conditioning agents, and pearlizing agents, that require heating and dissolving, and it takes time to dissolve these. In addition, it takes time to cool them to achieve a beautiful pearly luster. Therefore, the production process requires a step of heating to dissolve the raw materials and a step of cooling, which creates the problem of time-consuming blending.

[0003] Another problem is the high energy costs associated with the manufacturing process, which requires heating and cooling. The heating process requires large amounts of electricity and fuel to maintain high temperatures, while the cooling process requires electricity and other energy sources to operate the coolant and cooling equipment. Reducing energy costs not only reduces manufacturing costs, but is also important for environmental responsibility.

[0004] To avoid the heat dissolution step, other methods are also possible, such as using pearl concentrate, in which a pearlizing agent is pre-dispersed in a solvent, liquid nonionic polymers, and liquid cationic polymers. For example, Patent Document 1 discloses a concentrated pearlizing agent composition that can impart a pearl-like luster to a detergent composition. However, detergents produced using these raw materials without heat dissolution have problems such as poor texture and insufficient quality. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-348212 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, an object of the present invention is to provide a novel production method that can improve production efficiency in the production of a cleaning agent using raw materials that require heating and dissolution. [Means for solving the problem]

[0007] To solve the above problems, the inventors conceived of preparing a composition (hereinafter also referred to as a "raw material composition") that could be considered a concentrate of raw materials by preparing in advance those raw materials that require heating and dissolving during production. However, raw material compositions containing high concentrations of raw materials that require heating and dissolving tend to become highly viscous, making them difficult to use in producing cleaners.

[0008] Therefore, the present inventors have intensively investigated methods for preventing the viscosity of raw material compositions from increasing, and have discovered a method by which each raw material can be uniformly dispersed to form a liquid. The inventors suppressed the increase in viscosity by using an anionic surfactant, which is one of the raw materials for cleaning agents and has the property of being resistant to thickening, as a solvent. Furthermore, the increase in viscosity was further suppressed by adding salts. By combining these techniques, the inventors succeeded in uniformly dispersing raw materials that require heating to dissolve and forming them into a liquid, thereby obtaining a flowable raw material composition that can be used to manufacture cleaning agents.

[0009] When shampoo was produced using this raw material composition, it was found that the manufacturing process did not require heating and cooling steps, and therefore shampoo could be produced in an extremely short time compared to the manufacturing process of conventional detergents. Thus, it was discovered that the manufacturing efficiency of detergents such as shampoos can be dramatically improved, and the present invention was completed based on this discovery.

[0010] The present invention provides (I) preparing a raw material composition; (II) preparing a cleaning agent at room temperature using the raw material composition; The method for producing a cleaning agent, comprising the steps of: (i) a step of adding 3 to 10% by mass of a salt (D) in a raw material composition to 10 to 30% by mass of an anionic surfactant (A) in a raw material composition; (ii) adding a cationic polymer (C) to the composition of step (i) in an amount of 0.7 to 3 mass% based on the raw material composition; (iii) mixing the composition of step (ii) at 50 to 100°C; (iv) adding 5 to 20% by mass of a nonionic surfactant (B) to the composition of step (iii); and (v) mixing the composition of step (iv) at 50 to 100°C The present invention provides a method for producing a cleaning agent having the following structure.

[0011] The present invention also provides a method for producing a detergent, further comprising a step (vi) of cooling the composition obtained in step (v), wherein step (vi) comprises cooling by adding an amphoteric surfactant (E) at 50°C or less.

[0012] The present invention also provides a method for producing a detergent, wherein the amphoteric surfactant is at least one selected from the group consisting of amidobetaine amphoteric surfactants, sulfobetaine amphoteric surfactants, and imidazoline amphoteric surfactants.

[0013] The present invention also provides a method for producing a detergent, wherein the anionic surfactant is an amino acid-derived surfactant.

[0014] The present invention also provides a method for producing a detergent, wherein the anionic surfactant is at least one selected from the group consisting of triethanolamine lauroyl sarcosine, triethanolamine cocoyl glutamate, sodium lauroyl methyl alanine, and sodium lauroyl hydroxyethyl-β-alanine.

[0015] The present invention also provides a method for producing a detergent, wherein the cationic polymer is in powder form.

[0016] The present invention also provides a method for producing a detergent, wherein the cationic polymer is at least one selected from the group consisting of polyquaternium-10, polyquaternium-67, polyquaternium-7, and cationized guar gum.

[0017] The present invention also provides a method for producing a detergent, wherein the nonionic surfactant is not liquid at room temperature.

[0018] The present invention also provides a method for producing a detergent, wherein the nonionic surfactant is at least one selected from the group consisting of thickeners, foam boosters, foam aids, opacifying agents, pearlizing agents, and emulsion stabilizers.

[0019] The present invention also provides a method for producing a detergent, wherein the nonionic surfactant is at least one selected from the group consisting of coconut oil fatty acid monoethanolamide and ethylene glycol distearate.

[0020] The present invention also provides a method for producing a detergent, wherein the nonionic surfactant contains a pearlizing agent, and the detergent has a pearly luster.

[0021] The present invention also provides a method for producing a detergent, wherein the salt is at least one salt selected from the group consisting of sodium chloride, ethylenediaminetetraacetic acid (EDTA), benzoic acid, sorbic acid, dehydroacetic acid, citric acid, glutamic acid, and phosphoric acid.

[0022] The present invention also provides a method for producing a raw material composition for use in producing a cleaning agent, comprising: (i) a step of adding 3 to 10% by mass of a salt (D) in a raw material composition to 10 to 30% by mass of an anionic surfactant (A) in a raw material composition; (ii) adding a cationic polymer (C) to the composition of step (i) in an amount of 0.7 to 3 mass% based on the raw material composition; (iii) mixing the composition of step (ii) at 50 to 100°C; (iv) adding 5 to 20% by mass of a nonionic surfactant (B) to the composition of step (iii); and (v) mixing the composition of step (iv) at 50 to 100°C The present invention provides a method for producing a raw material composition comprising the steps of:

[0023] The present invention also provides a method for producing a raw material composition, further comprising a step (vi) of cooling the composition obtained in the step (v), wherein the step (vi) comprises cooling by adding an amphoteric surfactant (E) at 50°C or less.

[0024] The present invention also provides a raw material composition for use in producing a detergent, produced using any of the above methods for producing a raw material composition. [Effects of the Invention]

[0025] The present invention can improve production efficiency in the production of detergents using raw materials that require heating and dissolving. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a diagram showing the composition and preparation method of a raw material composition in one embodiment of the present invention. [Figure 2] FIG. 1 shows the composition and preparation method of a comparative shampoo. DETAILED DESCRIPTION OF THE INVENTION

[0027] The present invention provides a method for producing a detergent. The method for producing a detergent of the present invention uses a raw material composition prepared in advance.

[0028] The raw material composition prepared in the present invention is a composition containing the following components (A) to (D). (A) Anionic surfactant 10 to 30% by mass (B) Nonionic surfactant 5 to 20% by mass (C) Cationic polymer 0.7 to 3 mass% (D) Salts 3 to 10% by mass

[0029] In the present invention, a "raw material composition" refers to a composition in which raw materials for a cleaning agent that require heating to dissolve, disperse, or melt (hereinafter also referred to as "raw materials requiring heating and dissolving") are preheated to dissolve, disperse, or melt. "Raw materials requiring heating and dissolving" include, for example, raw materials that do not dissolve, disperse, or melt at room temperature, and raw materials that are difficult to dissolve, disperse, or melt at room temperature. Raw materials requiring heating and dissolving can be, for example, solid and powder raw materials that require heating to dissolve or disperse in another liquid or fluid, and solid or powder raw materials with a high melting point. The raw material composition can contain some or all of the raw materials for a cleaning agent that require heating and dissolving, and preferably contains all of the raw materials requiring heating and dissolving. By including all of the raw materials requiring heating and dissolving, the cleaning agent can be prepared easily and quickly at room temperature without the need for heating or cooling.

[0030] The raw material composition may further contain components other than the raw materials that require heating to dissolve. For example, the raw material composition may further contain a solvent for dissolving or dispersing the components that require heating to dissolve.

[0031] In this specification, "room temperature" means a natural temperature without heating or cooling, and is not particularly limited, but can be, for example, 15 to 35°C.

[0032] As used herein, "dissolve" refers to mixing with other liquid components to form a homogeneous mixture, such as a solution. As used herein, "disperse" refers to particles being uniformly mixed in a liquid. As used herein, "melt" refers to a solid or powder becoming a liquid.

[0033] As used herein, the term "raw material" refers to the material from which a cleaning agent is produced. The raw material may be a single component or a mixture of two or more components.

[0034] The method for producing a cleaning agent of the present invention includes (I) a step of preparing a raw material composition, and (II) a step of preparing a cleaning agent at room temperature using the raw material composition.

[0035] (I) Step of preparing a raw material composition The process for preparing the raw material composition includes the following steps (i) to (v). (i) a step of adding 3 to 10% by mass of a salt (D) in a raw material composition to 10 to 30% by mass of an anionic surfactant (A) in a raw material composition; (ii) adding a cationic polymer (C) to the composition of step (i) in an amount of 0.7 to 3 mass% based on the raw material composition; (iii) mixing the composition of step (ii) at 50 to 100°C; (iv) adding 5 to 20% by mass of a nonionic surfactant (B) to the composition of step (iii); and (v) mixing the composition of step (iv) at 50 to 100°C;

[0036] In step (i), 3 to 10% by mass of salts (D) are added to 10 to 30% by mass of anionic surfactant (A) in the raw material composition. In step (i), the salts may be added at room temperature, or the salts may be added while the anionic surfactant is being heated. The heating method is not particularly limited, and any commonly used heating method can be used. The salts may be added before the start of heating, during heating, or after the predetermined temperature has been reached. The predetermined temperature is not particularly limited, but may be 50 to 100°C, preferably 50 to 70°C, and more preferably 60 to 70°C. The salts may also be added while stirring, etc. Adding salts can prevent the raw material composition from becoming too viscous.

[0037] In step (ii), 0.7 to 3 mass% of a cationic polymer (C) is added to the composition obtained in step (i) in the raw material composition. In step (ii), the cationic polymer may be added at room temperature, or the cationic polymer may be added while the composition of step (i) is being heated. The timing of adding the cationic polymer may be before the start of heating, during heating, or after the predetermined temperature has been reached. The predetermined temperature is not particularly limited, but may be 50 to 100°C, preferably 50 to 70°C, and more preferably 60 to 70°C. In step (ii), the cationic polymer may be added while stirring, etc. Adding the salt first and then the cationic polymer can effectively suppress the increase in viscosity after the addition of the cationic polymer.

[0038] In step (iii), the composition obtained in step (ii) is mixed at 50 to 100°C, preferably 50 to 70°C, and more preferably 60 to 70°C. In step (iii), the cationic polymer can be sufficiently dissolved, dispersed, or melted. Any commonly used method can be used as the mixing method, such as stirring using a propeller. Step (iii) is not particularly limited, but mixing can be done for, for example, 5 to 60 minutes, preferably 10 to 30 minutes.

[0039] In step (iv), 5 to 20% by mass of a nonionic surfactant (B) is added to the composition obtained in step (iii) in the raw material composition. In step (iv), although not particularly limited, the nonionic surfactant may be added while the composition of step (iii) is being heated. The timing of adding the nonionic surfactant may be before the start of heating, during heating, or after the predetermined temperature has been reached. Although not particularly limited, the predetermined temperature may be 50 to 100°C, preferably 60 to 80°C, and more preferably 70 to 80°C. In step (iv), the nonionic surfactant may be added while stirring, etc.

[0040] In step (v), the composition obtained in step (iv) is mixed at 40 to 100°C, preferably 60 to 80°C, and more preferably 70 to 80°C. In step (v), the nonionic surfactant can be sufficiently dissolved, dispersed, or melted. Any commonly used method can be used as the mixing method, such as stirring using a propeller. Step (v) is not particularly limited, but mixing can be performed for, for example, 5 to 60 minutes, preferably 10 to 30 minutes.

[0041] The production method of the present invention may further include a step (vi) of cooling the composition obtained in step (v). The cooling method is not particularly limited, and any commonly used cooling method can be used. For example, the composition obtained in step (v) may be cooled naturally or using a cooling device. Alternatively, in step (vi), cooling may be achieved by adding an amphoteric surfactant (E) to the composition obtained in step (v) at a temperature of 50°C or less, preferably 40°C or less, and more preferably 35°C or less. The amphoteric surfactant may be maintained at a temperature of, for example, 10 to 50°C, preferably 10 to 40°C, and more preferably 15 to 35°C. Cooling by adding an amphoteric surfactant can improve cooling efficiency. Rapid cooling of the composition in step (vi) can improve the pearly appearance when a pearlizing agent is included.

[0042] In the production method of the present invention, the composition obtained in step (v) or step (vi) can be used as a raw material composition.

[0043] The production method of the present invention may further include a step of adding a pH adjuster (F) during, before, or after any of steps (i) to (v). The step of adding the pH adjuster (F) may be carried out before, during, or after each step. The step of adding the pH adjuster (F) is preferably carried out before, during, or between steps (i) and (ii). Adding a pH adjuster can improve the pearly appearance when a pearlizing agent is used.

[0044] (A) Anionic surfactant The anionic surfactant is used as a solvent in the production method of the present invention, and therefore, the anionic surfactant can be in a liquid state at room temperature or higher.

[0045] The anionic surfactant may be, for example, a component commonly used in detergents, such as a higher alcohol-based surfactant, a carboxylic acid-based surfactant, a sulfonic acid-based surfactant, an olefin-based surfactant, a taurine-based surfactant, or an amino acid-based surfactant, with amino acid-based surfactants being preferred.

[0046] The amino acid surfactant is an anionic surfactant composed of a fatty acid, an amino acid, and an alkali. The amino acid surfactant used in the present invention can be composed of a fatty acid such as lauric acid, myristic acid, stearic acid, palm fatty acid, and coconut oil-derived fatty acid (cocoyl), an amino acid such as glycine, glutamic acid, alanine, sarcosine, aspartic acid, and threonine, and an alkali such as potassium, sodium, ammonium, and triethanolamine. Examples of amino acid surfactants include potassium coconut glutamate, sodium coconut glutamate, triethanolamine coconut glutamate, ammonium palm kernel glutamate, sodium lauroyl glutamate, triethanolamine lauroyl glutamate, potassium coconut threonine, sodium coconut threonine, triethanolamine coconut threonine, ammonium palm kernel threonine, sodium lauroyl threonine, triethanolamine lauroyl threonine, potassium coconut sarcosine, sodium coconut sarcosine, triethanolamine coconut sarcosine, ammonium palm kernel sarcosine, sodium lauroyl sarcosine, triethanolamine lauroyl sarcosine, potassium coconut methylalanine, and coconut fat. Examples of suitable glycerin-based oils include sodium methylalanine, coconut oil fatty acid methylalanine triethanolamine, palm kernel oil fatty acid methylalanine ammonium, sodium lauroyl methylalanine, triethanolamine lauroyl methylalanine, sodium lauroyl aspartate, potassium lauroyl aspartate, triethanolamine lauroyl aspartate, sodium myristoyl aspartate, potassium myristoyl aspartate, sodium cocoyl aspartate, potassium cocoyl aspartate, triethanolamine cocoyl aspartate, sodium palm fatty acid aspartate, sodium lauroyl glycine, potassium lauroyl glycine, sodium myristoyl glycine, potassium myristoyl glycine, sodium cocoyl glycine, potassium cocoyl glycine, and sodium palm fatty acid glycine.

[0047] Examples of higher alcohol surfactants that can be used include sodium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium laureth sulfate, ammonium laureth sulfate, sodium alkyl ether sulfate, polyoxyethylene lauryl ether sodium sulfate, sodium alkylamide sulfate, and potassium polyoxyethylene coconut oil fatty acid amide ether sulfate.

[0048] Examples of carboxylic acid surfactants include sodium laurate, sodium myristate, sodium palmitate, sodium stearate, sodium oleate, sodium palmate, sodium palm kernelate, sodium coconut oil fatty acid, sodium olivine fatty acid, potassium laurate, potassium myristate, potassium palmitate, potassium stearate, potassium oleate, potassium palmate, potassium palm kernelate, potassium coconut fatty acid, potassium olivine fatty acid, sodium laureth-4 carboxylate, sodium laureth-5 carboxylate, sodium laureth-6 carboxylate, sodium laureth-13 carboxylate, sodium C12-13 pareth-8 carboxylate, and sodium C12-15 pareth-8 carboxylate.

[0049] Examples of sulfonic acid surfactants include sodium cocoyl isethionate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, sodium diethylhexyl sulfosuccinate, and sodium lauryl sulfonate.

[0050] The olefin surfactant may be, for example, sodium olefin (C14-16) sulfonate.

[0051] Examples of taurine surfactants include sodium caproyl methyl taurate, sodium cocoyl methyl taurate, sodium lauroyl methyl taurate, sodium myristoyl methyl taurate, sodium stearoyl methyl taurate, and sodium cocoyl methyl taurate.

[0052] The anionic surfactant may be one kind of component or a combination of two or more kinds of components. The anionic surfactant used in the present invention is preferably at least one selected from the group consisting of lauroyl sarcosine triethanolamine, cocoyl glutamic acid triethanolamine, lauroyl methyl alanine sodium, and lauroyl hydroxyethyl-β-alanine sodium.

[0053] The anionic surfactant may be present in the raw material composition at 10 to 30% by mass, preferably 15 to 25% by mass, for example 20% by mass.

[0054] (B) Nonionic surfactant The nonionic surfactant is not particularly limited, but may be a component incorporated into a detergent as a thickener, foaming agent, foaming aid, fat-reducing agent, opacifying agent, pearlizing agent, and / or emulsion stabilizer. The nonionic surfactant is preferably a pearlizing agent. The nonionic surfactant is not particularly limited, but may be a raw material that requires heating to dissolve.

[0055] In the present invention, the nonionic surfactant may be a single component or a combination of two or more components. Furthermore, at least one of the nonionic surfactants may be a pearlizing agent. For example, the nonionic surfactant may be a combination of two or more pearlizing agents, or a combination of a pearlizing agent and a thickener. By using at least one pearlizing agent as the nonionic surfactant, a cleanser with a pearly luster can be produced.

[0056] The raw material composition of the present invention may have a pearly luster by incorporating a pearlizing agent into the nonionic surfactant. In this specification, "having a pearly luster" means that the raw material composition reflects light specularly like a metal surface and emits various colors like pearls.

[0057] Examples of nonionic surfactants that can be used include polyoxyethylene cetyl ether, sorbitan monostearate, polyoxyethylene sorbitan triisostearate, polyoxyethylene hydrogenated castor oil, polyoxyethylene monoisostearate, polyoxyethylene glyceryl dioleate, coconut oil fatty acid diethanolamide, coconut oil fatty acid monoethanolamide, coconut oil fatty acid N-methylethanolamide, polyoxyethylene polyoxypropylene glycol, polyethylene glycol monolaurate, ethylene glycol distearate, lauryl glucoside, decyl glucoside, and coconut oil alkyl glucoside. The nonionic surfactant used in the present invention is preferably at least one selected from the group consisting of coconut oil fatty acid monoethanolamide and ethylene glycol distearate.

[0058] The nonionic surfactant used in the production method of the present invention may be in the form of a liquid, solid, powder, etc. at room temperature. The nonionic surfactant may be in the form of a non-liquid at room temperature, for example, a solid or powder at room temperature that requires heating for dissolution.

[0059] The nonionic surfactant may be present in the raw material composition at 5 to 20% by mass, preferably 10 to 20% by mass, for example 15% by mass.

[0060] (C) Cationic polymer The cationic polymer is not particularly limited, but may be a component incorporated into a cleanser as a foam quality improver, foam booster, antistatic agent, and / or hair conditioning agent, etc. The cationic polymer is not particularly limited, but may be a raw material that requires heating to dissolve.

[0061] Examples of cationic polymers that can be used include cationized cellulose, cationized guar gum, cationized tara gum, cationized locust bean gum, cationized fenugreek gum, polyquaternium-11, polyquaternium-107, polyquaternium-28, polyquaternium-33, polyquaternium-39, polyquaternium-46, polyquaternium-52, polyquaternium-53, polyquaternium-6, polyquaternium-67, polyquaternium-7, polyquaternium-22, polyquaternium-47, polyquaternium-49, polyquaternium-50, and polyquaternium-10. The cationic polymer is preferably polyquaternium-10. The cationic polymer may be a single component or a combination of multiple components. The cationic polymer used in the present invention is preferably at least one selected from the group consisting of polyquaternium-10, polyquaternium-67, polyquaternium-7 and cationized guar gum.

[0062] The cationic polymer used in the production method of the present invention may be in a liquid, solid, powder, or other form at room temperature. The cationic polymer is not particularly limited, but may be added after being dispersed in advance using a stirrer or the like. The cationic polymer may be in a form that is not liquid at room temperature, and may be in a solid or powder form at room temperature that requires heating to dissolve.

[0063] The content of the cationic polymer in the raw material composition may be 0.7 to 3 mass %, preferably 1 to 2 mass %, for example 1.5 mass % in the raw material composition.

[0064] (D) Salts The salts may be salts formed by the neutralization reaction between an acid and a base, and include inorganic salts and organic salts, etc. The salts are not limited to these, and may also be, for example, substances formed by the reaction of an acid with a basic oxide or a metal element, substances formed by the reaction of a base with an acidic oxide or a non-metal element, substances formed by the reaction of an acidic oxide with a basic chloride, and substances formed by the reaction of a non-metal element with a metal. Acids that form salts include, but are not limited to, hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid, carbonic acid, pyrophosphoric acid, metaphosphoric acid, boric acid, hydrofluoric acid, formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, caproic acid, enanthic acid, salicylic acid, chloroacetic acid, dichloroacetic acid, trichloroacetic acid, trifluoroacetic acid, gallic acid, benzoic acid, phthalic acid, cinnamic acid, mellitic acid, pyruvic acid, oxalic acid, lactic acid, tartaric acid, maleic acid, fumaric acid, malonic acid, succinic acid, malic acid, citric acid, aconitic acid, glutaric acid, adipic acid, ascorbic acid, and erythorbic acid. Bases that form salts include, but are not limited to, alkali metals, alkaline earth metals, metallic elements, and alkanolamines. Bases include, for example, aluminum, calcium, potassium, sodium, zinc, ammonium, and magnesium. As the base, one kind or two or more kinds can be appropriately selected and used from these.

[0065] The salts may be, for example, components commonly used in detergents. The salts may be, for example, components incorporated into detergents as chelating agents (sequestering agents), preservatives, and corrosion inhibitors. Examples of salts include chlorides such as sodium chloride, potassium chloride, and magnesium chloride; sulfates such as sodium sulfate, potassium sulfate, magnesium sulfate, and aluminum sulfate; carbonates such as sodium carbonate and sodium bicarbonate; ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid, hydroxyethylidene diphosphonic acid, benzoic acid, methylparaben, ethylparaben, propylparaben, butylparaben, sorbic acid, and dehydroacetic acid. Examples of sodium chloride include refined salt and natural salt. The salt used in the present invention is preferably at least one salt selected from the group consisting of sodium chloride, ethylenediaminetetraacetic acid (EDTA), benzoic acid, sorbic acid, dehydroacetic acid, citric acid, glutamic acid, and phosphoric acid.

[0066] The use of salts can have the effect of suppressing the viscosity of the raw material composition from increasing. The salts may be present in an amount of 3 to 10% by mass in the raw material composition, and preferably 4 to 9% by mass in the raw material composition. If the salts are present in an amount of 3% by mass or more, an increase in viscosity of the composition after the cooling step and blending can be more reliably suppressed. If the salts are present in an amount of 10% by mass or less, a good pearly appearance can be achieved when a pearlizing agent is used.

[0067] (E) Amphoteric surfactant The amphoteric surfactant is not particularly limited and can be a component commonly used in detergents. Examples of amphoteric surfactants that can be used include amidobetaine-type amphoteric surfactants, sulfobetaine-type amphoteric surfactants, and imidazoline-type amphoteric surfactants. Examples of amphoteric surfactants include lauramidopropyl betaine, cocamidopropyl betaine, palm kernel fatty acid amidopropyl betaine, (capryl / capramido)propyl betaine, myristamidopropyl betaine, and undecylenamidopropyl betaine. Examples of sulfobetaine-type amphoteric surfactants include lauramidopropyl hydroxysultaine, lauryl hydroxysultaine, and cocamidopropyl hydroxysultaine. Examples of imidazoline-type amphoteric surfactants include sodium lauroamphoacetate, sodium cocoamphoacetate, and sodium palmamphoacetate. Examples of amphoteric surfactants include capryl betaine, caprylyl betaine, lauryl betaine, myristyl betaine, capric amidopropyl betaine, caprylic amidopropyl betaine, lauric amidopropyl betaine, myristic amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, palm kernel oil fatty acid amidopropyl betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazonium betaine, coconut oil alkyl N-carboxyethyl-N-hydroxyethyl imidazolinium betaine sodium, lauryl dimethylamine oxide, stearyl dimethylamine oxide, oleyl dimethylamine oxide, dihydroxyethyl lauryl amine oxide, coconut oil alkyl dimethylamine oxide, lauramidopropyl amine oxide, and myristamidopropyl amine oxide. In the present invention, one type of amphoteric surfactant may be used, or two or more types of amphoteric surfactants may be used in combination. The amphoteric surfactant used in the present invention is preferably an amphoteric surfactant of the amphoteric type, more preferably palm kernel fatty acid amidopropyl betaine.

[0068] The content of the amphoteric surfactant in the raw material composition is not particularly limited, but can be 0.01 to 10% by mass, preferably 1 to 8% by mass, and more preferably 3 to 6% by mass.

[0069] (F) pH adjuster The pH adjuster may be at least one selected from the group consisting of arginine, citric acid, potassium hydroxide, lactic acid, malic acid, and phosphoric acid. The pH adjuster may be a single component or a combination of two or more components. The pH adjuster is not particularly limited, but may be present in an amount of, for example, 0.1 to 10% by mass in the raw material composition.

[0070] The production method of the present invention may further include a step of adding an optional component before, during, or after each of steps (i) to (vi). The optional component may be any component other than components (A) to (F) as long as it does not deviate from the object of the present invention. The optional component is not particularly limited, but may be a component used in a typical cleanser, such as a nonionic surfactant, a cationic surfactant, an antidandruff agent, a vitamin, a disinfectant, an anti-inflammatory agent, a pH adjuster, a preservative, a chelating agent, a moisturizer, a colorant, a plant extract, an amino acid, a hydrolyzed protein, a fragrance, an ultraviolet absorber, an antioxidant, or an oil.

[0071] The raw material composition obtained in the production method of the present invention may be in a liquid state. In this specification, the term "liquid" means a state in which the components are sufficiently dissolved or uniformly dispersed in a solvent, thereby having fluidity.

[0072] (II) Step of preparing the cleaning agent In step (II), a cleaning agent is prepared at room temperature using the raw material composition. In the present invention, the raw material composition is prepared in advance, in which components that require heating to dissolve are dissolved or dispersed. Therefore, the cleaning agent can be prepared without heating or cooling in step (II). This dramatically improves production efficiency.

[0073] Step (II) is not particularly limited, but may include, for example, step (a) of adding other components to the raw material composition and step (b) of mixing the composition obtained in step (a). The methods of addition and mixing are not particularly limited, and any commonly used method can be used. In step (a), for example, the raw material composition and other components may be added to a blending tank, but is not particularly limited. The raw material composition and other components may be added simultaneously or sequentially. In step (b), for example, mixing may be performed by stirring, but is not particularly limited.

[0074] According to the present invention, since a raw material composition in which components that require heating and dissolution are dissolved or dispersed is prepared in advance, the detergent can be prepared in step (II) without heating or cooling. That is, in step (II), the detergent can be prepared at room temperature, for example, 15 to 35°C, although this is not particularly limited. This allows for a dramatic improvement in production efficiency.

[0075] The other components added to the raw material composition in step (II) may be components commonly used in cleansers, and are not particularly limited, and may include, for example, anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants, cationic polymers, salts, antidandruff agents, vitamins, disinfectants, anti-inflammatory agents, pH adjusters, preservatives, chelating agents, moisturizers, colorants, plant extracts, amino acids, hydrolyzed proteins, fragrances, UV absorbers, antioxidants, and oils. The other components are preferably components that do not require heating to be dissolved, dispersed, or melted.

[0076] The detergent produced by the production method of the present invention is not particularly limited, but may be a detergent containing at least an anionic surfactant, a nonionic surfactant, a cationic polymer, and a salt, and may be, for example, a hair or skin detergent such as shampoo, body soap, facial cleanser, cleanser, hand soap, shaving lotion, or massage lotion.

[0077] The present invention also provides a method for producing a raw material composition for use in producing a cleaning agent. The method for producing the raw material composition of the present invention includes the steps of: (i) a step of adding 3 to 10% by mass of a salt (D) in a raw material composition to 10 to 30% by mass of an anionic surfactant (A) in a raw material composition; (ii) adding a cationic polymer (C) to the composition of step (i) in an amount of 0.7 to 3 mass% based on the raw material composition; (iii) mixing the composition of step (ii) at 50 to 100°C; (iv) adding 5 to 20% by mass of a nonionic surfactant (B) to the composition of step (iii); and (v) mixing the composition of step (iv) at 50 to 100°C It has.

[0078] The method for producing a raw material composition of the present invention may further include a step (vi) of cooling the composition obtained in the step (v). The step (vi) may be performed by adding an amphoteric surfactant (E) at a temperature of 50°C or less, without any particular limitation.

[0079] The present invention also provides a raw material composition for use in producing a detergent, produced by the method for producing a raw material composition of the present invention. The raw material composition of the present invention is a composition containing the following components (A) to (D): (A) Anionic surfactant 10 to 30% by mass (B) Nonionic surfactant 5 to 20% by mass (C) Cationic polymer 0.7 to 3 mass% (D) Salts 3 to 10% by mass

[0080] Although the raw material composition of the present invention contains a high concentration of a nonionic surfactant and a cationic polymer, the raw material composition is produced by the production method of the present invention, and therefore the nonionic surfactant and the cationic polymer are sufficiently dissolved, uniformly dispersed, or melted, and are in a liquid state, making it easy to mix with other ingredients to prepare a cleaning agent. [Example]

[0081] Example 1: Preparation of raw material composition 1 Raw material composition 1 was prepared by the following method (step (I)). The composition and preparation method of raw material composition 1 are shown in Figure 1. In Figure 1, the numerical values ​​shown below % indicate the blending amount (mass %) of each component in raw material composition 1.

[0082] In raw material composition 1, lauroyl sarcosine TEA was used as component (A) the anionic surfactant. Cocamide MEA, coconut oil fatty acid PEG-7 glyceryl, and glycol distearate, an opacifying agent, were used as component (B) the nonionic surfactant. Polyquaternium-10 was used as component (C) the cationic polymer. A chelating agent, a preservative, an inorganic salt, and an organic acid were used as component (D) the salts. Palm kernel fatty acid amidopropyl betaine was used as component (E) the amphoteric surfactant.

[0083] First, lauroyl sarcosine TEA (20% by mass) and purified water were placed in a blending tank and heated. After the temperature reached 50-70°C, chelating agents and preservatives (total 2% by mass), as well as inorganic and organic salts (total 2% by mass) were added (step (i)). Next, coconut oil fatty acid PEG-7 glyceryl (5% by mass) and polyquaternium-10 (1.5% by mass) were added (step (ii)). The mixture was then stirred to dissolve (step (iii)).

[0084] Next, the mixture was heated to 60 to 80°C, and glycol distearate (5% by mass) and cocamide MEA (5% by mass) were added (step (iv)). The mixture was stirred at 60 to 80°C until it was uniformly dissolved (step (v)).

[0085] Next, cooling was initiated. In the cooling step, palm kernel fatty acid amidopropyl betaine (5% by mass) at 10 to 50°C was added, and it was confirmed that the pearly appearance had improved (step (vi)). When it was confirmed that the pearly appearance had improved, the compounding was completed.

[0086] Example 2: Preparation of shampoo A shampoo was produced (Step (II)) with the composition shown in Table 1 below. The ingredients were added to a blending tank in the order shown in Table 1 while stirring. After that, the ingredients were stirred and mixed for 20 minutes, and blending was completed. No heating or cooling was performed during blending. The temperature after blending was 30°C. The time required from start to finish of blending was approximately 2 hours.

[0087] In this example, raw material composition 1 prepared in advance was used, so that neither heating nor cooling was required in the shampoo production process, and the shampoo could be produced simply and in a short time.

[0088] [Table 1]

[0089] Comparative Example 1: Production of shampoo A shampoo containing a pearlizing agent was produced using a conventional method. The composition and preparation method of the shampoo of Comparative Example 1 are shown in Figure 2.

[0090] First, TEA-lauroyl sarcosine and TEA-cocoyl glutamate (total of 15% by mass) and purified water were placed in a blending tank, and heating was initiated.

[0091] Next, the chelating agent and preservative (total 0.5% by mass), inorganic salt and organic salt (total 1% by mass) were added sequentially while adjusting the temperature in the blending tank as shown in Figure 2. After that, coconut oil fatty acid PEG-7 glyceryl (1.2% by mass) and polyquaternium-10 (0.5% by mass) were added, and after adjusting the temperature again, glycol distearate (1.2% by mass) and cocamide MEA (1.2% by mass) were added and confirmed to be uniformly dissolved.

[0092] Cooling was then initiated. Palm kernel fatty acid amidopropyl betaine (6.2% by mass), polyquaternium-7 (2% by mass), fragrance (1% by mass), and cocamide methyl MEA (5% by mass) were added and mixed with stirring to complete the blending. The temperature at the end was 50°C or lower. The time required from the start to the end of blending was approximately 6 hours.

[0093] Advantages of the present invention Using conventional methods, it took approximately six hours to produce one lot of product, and adding the subsequent inspection, product transportation, and equipment cleaning took a considerable amount of time, so the maximum production capacity was one lot per day.

[0094] On the other hand, the method of the present invention allows the production of several batches of the raw material composition in one day. The use of the raw material composition also allows the production of detergents in a shorter time than conventional methods, making it possible to produce several batches per day. Therefore, by combining the production of the raw material composition with the production of the detergent, the number of days required for production can be significantly reduced compared to conventional methods. Furthermore, according to the present invention, the production of the product (detergent) after blending the raw material composition does not require temperature adjustment by heating or cooling, and only requires adjusting the timing of adding the ingredients, making production extremely simple.

[0095] Furthermore, the heating and cooling steps require the use of large amounts of gas, electricity, water, etc. Conventional methods require the use of large amounts of gas, electricity, water, etc. for each production. In contrast, the present invention performs the heating and cooling steps only on the day the raw material composition is produced, thereby significantly reducing the amounts of gas, electricity, water, etc. used. [Industrial Applicability]

[0096] The present invention can be suitably used for producing a composition using a raw material that requires heating and dissolving.

Claims

1. (I) preparing a raw material composition; (II) preparing a cleaning agent at room temperature using the raw material composition; A method for producing a cleaning agent comprising: The step (I) (i) adding 3 to 10% by mass of a salt (D) in the raw material composition to 10 to 30% by mass of an anionic surfactant (A) in the raw material composition; (ii) adding a cationic polymer (C) to the composition of the step (i) in an amount of 0.7 to 3% by mass based on the raw material composition; (iii) mixing the composition of step (ii) at 50 to 100°C; (iv) adding 5 to 20% by mass of a nonionic surfactant (B) to the composition of step (iii); and (v) mixing the composition of step (iv) at 50 to 100°C A method for producing a cleaning agent comprising the steps of:

2. The method further comprises a step (vi) of cooling the composition obtained in the step (v), 2. The method for producing a detergent according to claim 1, wherein the step (vi) comprises cooling the mixture by adding an amphoteric surfactant (E) at a temperature of 50°C or less.

3. 3. The method for producing a cleaning agent according to claim 2, wherein the amphoteric surfactant is at least one selected from the group consisting of amidobetaine amphoteric surfactants, sulfobetaine amphoteric surfactants, and imidazoline amphoteric surfactants.

4. The method for producing a cleaning agent according to any one of claims 1 to 3, wherein the anionic surfactant is an amino acid-derived surfactant.

5. 4. The method for producing a cleanser according to claim 1, wherein the anionic surfactant is at least one selected from the group consisting of triethanolamine lauroyl sarcosine, triethanolamine cocoyl glutamate, sodium lauroyl methyl alanine, and sodium lauroyl hydroxyethyl-β-alanine.

6. The method for producing a detergent according to any one of claims 1 to 3, wherein the cationic polymer is in a powder form.

7. The method for producing a detergent according to any one of claims 1 to 3, wherein the cationic polymer is at least one selected from the group consisting of polyquaternium-10, polyquaternium-67, polyquaternium-7, and cationized guar gum.

8. The method for producing a cleaning agent according to any one of claims 1 to 3, wherein the nonionic surfactant is not liquid at room temperature.

9. The method for producing a detergent according to any one of claims 1 to 3, wherein the nonionic surfactant is at least one selected from the group consisting of thickeners, foam boosters, foam aids, fatting agents, opacifying agents, pearlizing agents, and emulsion stabilizers.

10. The method for producing a cleaning agent according to any one of claims 1 to 3, wherein the nonionic surfactant is at least one selected from the group consisting of coconut oil fatty acid monoethanolamide and ethylene glycol distearate.

11. the nonionic surfactant comprises a pearlizing agent; The method for producing a detergent according to any one of claims 1 to 3, wherein the detergent has a pearly luster.

12. 4. The method for producing a cleaning agent according to claim 1, wherein the salt is at least one salt selected from the group consisting of sodium chloride, ethylenediaminetetraacetic acid (EDTA), benzoic acid, sorbic acid, dehydroacetic acid, citric acid, glutamic acid, and phosphoric acid.

13. A method for producing a raw material composition for use in producing a cleaning agent, comprising: (i) adding 3 to 10% by mass of a salt (D) in the raw material composition to 10 to 30% by mass of an anionic surfactant (A) in the raw material composition; (ii) adding a cationic polymer (C) to the composition of the step (i) in an amount of 0.7 to 3% by mass based on the raw material composition; (iii) mixing the composition of step (ii) at 50 to 100°C; (iv) adding 5 to 20% by mass of a nonionic surfactant (B) to the composition of step (iii); and (v) mixing the composition of step (iv) at 50 to 100°C A method for producing a raw material composition comprising the steps of:

14. The method further comprises a step (vi) of cooling the composition obtained in the step (v), 14. The method for producing a raw material composition according to claim 13, wherein the step (vi) involves cooling by adding an amphoteric surfactant (E) at 50°C or less.

15. A raw material composition for use in producing a detergent, produced by the method for producing a raw material composition according to claim 13 or 14.

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