Cleaning composition

Abstract

To provide a cleansing agent composition which has high storage stability, reduced roughness in tactile sensation, and favorable feeling upon use.SOLUTION: A cleansing agent composition comprises a carbonate, an organic acid, and a surfactant, the composition comprising: particles (A) containing the carbonate and particles (B) containing the organic acid, wherein: the particles (A) do not contain the organic acid, and the particles (B) do not contain the carbonate; the median diameter of carbonate particles (a), which are raw materials for the particles (A), and the median diameter of organic acid particles (b), which are raw materials for the particles (B), are 170 μm or less; the median diameter of at least one of the particles (A) and the particles (B) is 80 μm or more; the median diameter of the particles (A) is equal to or greater than that of the carbonate particles (a); and the median diameter of the particles (B) is equal to or greater than that of the organic acid particles (b).SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleaning composition. [Background technology]

[0002] In recent years, foam-type facial cleansers and body soaps have been gaining attention due to their ease of use. In light of this, a foaming cosmetic composition that generates fine carbon dioxide bubbles has been reported (Patent Document 1), which takes advantage of the property that a mixture of carbonate and organic acid generates carbon dioxide gas when a small amount of water is added. It is disclosed that this foaming cosmetic composition can be used as a facial cleanser, shaving foam, shampoo, or body soap. However, the foaming cosmetic composition described in Patent Document 1 generates carbon dioxide gas during storage when even a trace amount of water is present in the mixture of carbonate and organic acid, and the reaction generates water as a by-product, causing a chain reaction that results in swelling of the packaging material and a decrease in foaming ability during use.

[0003] To address this issue, techniques for improving storage stability have been reported. For example, Patent Document 2 discloses a briquette formulation that contains polyethylene glycol and polyvinylpyrrolidone to improve storage stability. Patent Document 3 also discloses a bath agent composition that has good storage stability by containing the following components (A) to (C): (A) 25 to 55 mass % of an alkali metal carbonate having 50% or more particles with a particle diameter of 180 μm or more, (B) 40 to 70 mass % of an organic acid having 50% or more particles with a particle diameter of 180 μm or more, and (C) 0.01 to 10 mass % of a poorly water-soluble metal oxide. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 1-290615 [Patent Document 2] Japanese Patent Application Publication No. 2018-76263 [Patent Document 3] Japanese Patent Application Laid-Open No. 2009-155213 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology described in Patent Document 2 uses a polymeric compound, such as polyethylene glycol, that is solid at room temperature. This reduces the instantaneous solubility of the detergent, resulting in a rough texture due to undissolved components, which deteriorates the feel of the detergent upon use. Patent Document 3, meanwhile, relates to bath additives. When a bath additive composition dissolves on the surface of the bathwater, carbon dioxide gas dissolves in the bathwater without dissolving sufficiently, and therefore the bath additive composition must be allowed to settle in the bathwater and remain there for a certain period of time to dissolve. Therefore, the bath additive composition must be composed of raw material particles with a certain degree of large particle size. In contrast, detergent compositions require instantaneous solubility, allowing them to dissolve instantly in a small amount of water in a short period of time. Therefore, using large particles in detergent compositions results in poor solubility, resulting in the same problems described above. Unlike bath additives, detergent compositions come into direct contact with the skin of the face, body, etc., and therefore require a delicate feel (touch). Therefore, an object of the present invention is to provide a detergent composition that has high storage stability, is suppressed in roughness to the touch, and has a good feel when used. [Means for solving the problem]

[0006] As a result of investigations, the present inventors have found that the above-mentioned problems can be solved by a detergent composition containing a carbonate, an organic acid, and a surfactant, wherein the carbonate and the organic acid are contained in the form of independent particles, i.e., carbonate-containing particles (A) (hereinafter also referred to as "particles (A)") and organic acid-containing particles (B) (hereinafter also referred to as "particles (B)"), respectively, and wherein the median diameters of the respective raw material particles, carbonate particles (a) (hereinafter also referred to as "carbonate particles (a)") and organic acid particles (b) (hereinafter also referred to as "organic acid particles (b)"), are a predetermined value or less, at least one of the particles (A) and the particles (B) has a predetermined value or more, and the median diameters of the particles (A) and the particles (B) are equal to or greater than the median diameters of the respective raw material particles. The present invention relates to the following: A cleaning composition containing a carbonate, an organic acid, and a surfactant, The cleaning composition contains particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) do not contain an organic acid, and the particles (B) do not contain a carbonate, the median diameter of the carbonate particles (a) that are raw materials for the particles (A) and the median diameter of the organic acid particles (b) that are raw materials for the particles (B) are 170 μm or less; At least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, the median diameter of the particles (A) is equal to or larger than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is equal to or larger than the median diameter of the organic acid particles (b); Cleaning composition. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a detergent composition which has high storage stability, is suppressed in roughness to the touch, and has a good feeling when used. DETAILED DESCRIPTION OF THE INVENTION

[0008] The cleaning composition of the present invention is a cleaning composition containing a carbonate, an organic acid, and a surfactant, The cleaning composition contains particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) do not contain an organic acid, and the particles (B) do not contain a carbonate, the median diameter of the carbonate particles (a) that are raw materials for the particles (A) and the median diameter of the organic acid particles (b) that are raw materials for the particles (B) are 170 μm or less; At least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, The median diameter of the particles (A) is equal to or larger than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is equal to or larger than the median diameter of the organic acid particles (b). The detergent composition of the present invention not only exhibits the cleaning action of the surfactant, but also exhibits excellent cleaning properties by generating carbon dioxide gas through a reaction between the carbonate and the organic acid when the detergent composition is dissolved in water. The cleanser composition of the present invention is in powder or granular form and is primarily used for cleansing the face, body, etc. Such cleanser compositions for application to skin, such as the face or body, are required to have a pleasant feel when lathered, without any roughness to the touch, and must be instantly dissolved in a short time, desirably resulting in small particle sizes of particles constituting the cleanser composition. However, it has been found that when the particle size of a cleanser composition is small, the effect of adding a moisture absorbent is insufficient, and carbon dioxide generation in the packaging material cannot be suppressed, resulting in poor storage stability. Further investigations have revealed that in order to suppress carbon dioxide generation during storage, the particle sizes of the carbonate and organic acid must be increased to a specific value or greater. The present inventors conducted extensive research to address these conflicting demands and found that both immediate solubility and storage stability can be achieved by adjusting the particle sizes of the raw material particles and the particles constituting the resulting cleanser composition to specific ranges, respectively. That is, according to the detergent composition of the present invention, the median diameters of the carbonate particles (a) and the organic acid particles (b) are a predetermined value or less, the median diameter of at least one of the carbonate-containing particles (A) and the organic acid-containing particles (B) is a predetermined value or more, the median diameter of the particles (A) is equal to or greater than the median diameter of the carbonate particles (a) that are the raw material for the particles (A), and the median diameter of the particles (B) is equal to or greater than the median diameter of the organic acid particles (b) that are the raw material for the particles (A), thereby improving storage stability, suppressing roughness to the touch, and providing a good feel when used. Furthermore, the carbonate and the organic acid are contained in the form of independent particles, namely, particles (A) containing the carbonate and particles (B) containing the organic acid, thereby further improving storage stability and foaming properties.

[0009] <Carbonates and carbonate-containing particles (A)> The detergent composition of the present invention contains a carbonate. The carbonate is contained in the detergent composition of the present invention in the form of carbonate-containing particles (A). As the carbonate-containing particles (A) used in the detergent composition of the present invention, the raw material carbonate particles (a) may be used as they are, or granulated particles obtained by granulating the carbonate particles (a) may be used, or a mixture thereof may be used. The particles (A) do not contain any organic acid. Here, "does not contain" means that the amount of organic acid in the particles (A) is preferably less than 1% by mass, and more preferably 0% by mass.

[0010] Examples of carbonates used in the present invention include dialkali metal carbonates such as sodium carbonate and potassium carbonate; alkali metal hydrogen carbonates such as sodium hydrogen carbonate and potassium hydrogen carbonate; and the like, and one or more of these can be used. Among the above, from the viewpoint of improving foaming properties, the carbonate preferably contains one or more selected from the group consisting of sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3), more preferably sodium bicarbonate. From the viewpoint of improving foaming properties, the content of one or more selected from the group consisting of sodium carbonate and sodium bicarbonate in the carbonate is preferably 80% by mass or more, more preferably 90% by mass or more, and preferably 100% by mass or less, more preferably 100% by mass.

[0011] From the viewpoint of improving foaming property, the content of carbonate in the detergent composition is preferably 10% by mass or more, more preferably 15% by mass or more, even more preferably 20% by mass or more, and still more preferably 30% by mass or more. From the viewpoint of improving foam retention, the content is preferably 60% by mass or less, more preferably 55% by mass or less, and even more preferably 50% by mass or less. The content of carbonate in the detergent composition is preferably 10% by mass or more and 60% by mass or less, more preferably 15% by mass or more and 55% by mass or less, even more preferably 20% by mass or more and 50% by mass or less, and still more preferably 30% by mass or more and 50% by mass or less.

[0012] <Organic acids and particles containing organic acids (B)> The cleaning composition of the present invention contains an organic acid. The organic acid is contained in the cleaning composition of the present invention in the form of particles (B) containing the organic acid. As the organic acid-containing particles (B) used in the cleaning composition of the present invention, the raw material organic acid particles (b) may be used as they are, or granulated particles obtained by granulating the organic acid particles (b) may be used, or a mixture thereof may be used. The particles (B) do not contain carbonate. Here, "does not contain" means that the amount of carbonate in the particles (B) is preferably less than 1% by mass, and more preferably 0% by mass.

[0013] Examples of organic acids used in the present invention include citric acid, tartaric acid, malic acid, malonic acid, pyridonecarboxylic acid, succinic acid, fumaric acid, adipic acid, glutaric acid, and ascorbic acid, and one or more of these can be used. Among these, from the viewpoints of effervescence and solubility in water, the organic acid preferably contains one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid, and more preferably contains citric acid. From the viewpoint of improving effervescence, the content of one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid in the organic acid is preferably 80% by mass or more, more preferably 90% by mass or more, and preferably 100% by mass or less, and more preferably 100% by mass.

[0014] From the viewpoint of improving foaming property, the content of the organic acid in the detergent composition is preferably 5% by mass or more, more preferably 7% by mass or more, and even more preferably 10% by mass or more. From the viewpoint of improving foam retention, the content is preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, still more preferably 30% by mass or less, and even more preferably 20% by mass or less. The content of the organic acid in the detergent composition is preferably 5% by mass or more and 60% by mass or less, more preferably 5% by mass or more and 50% by mass or less, still more preferably 7% by mass or more and 40% by mass or less, still more preferably 7% by mass or more and 30% by mass or less, and even more preferably 10% by mass or more and 20% by mass or less.

[0015] <Surfactant> The cleaning composition of the present invention contains a surfactant. The surfactants used in the present invention include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants, and one or more of these can be used. Specific examples of each are shown below.

[0016] [Anionic surfactants] Specific examples of anionic surfactants include N-acylamino acid salts, N-acyl-N-methylamino acid salts, fatty acid salts, salts of esters of fatty acids having from 5 to 18 carbon atoms and isethionic acid, alkyl or alkenyl sulfonates having from 10 to 18 carbon atoms, polyoxyalkylene alkyl ether sulfate salts, and linear alkylbenzene sulfonates.

[0017] Examples of counter ions of the anionic group of the anionic surfactant include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; and alkanolammonium having 1 to 3 alkanol groups having 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.), with sodium ion and potassium ion being preferred, and sodium ion being more preferred.

[0018] [Cationic surfactant] Examples of cationic surfactants include quaternary ammonium salts such as alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylamidoalkyltrimethylammonium salts, benzalkonium chloride, and alkylpyridinium salts.

[0019] Examples of counter ions of the cationic group of the cationic surfactant include alkyl sulfate ions having from 1 to 3 carbon atoms, sulfate ions, phosphate ions, carboxylate ions having from 1 to 3 carbon atoms (formate ions, acetate ions, propionate ions), and halide ions such as chloride ions and bromide ions. Among these, from the viewpoints of ease of production and ease of availability of raw materials, halide ions are preferred, and chloride ions are more preferred.

[0020] [Amphoteric surfactants] Examples of amphoteric surfactants include one or more selected from the group consisting of alkylamine oxides having an alkyl group with 10 to 18 carbon atoms and alkylbetaines having an alkyl group with 10 to 18 carbon atoms.

[0021] [Nonionic surfactant] Specific examples of nonionic surfactants include one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxyethylene alkenyl ethers, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbit fatty acid esters, polyoxyethylene fatty acid esters, alkyl glucosides, alkyl alkanolamides, alkyl glyceryl ethers, higher fatty acid sucrose esters, polyglycerin fatty acid esters, polyoxyethylene hydrogenated castor oil, and alkyl saccharides. Among the above, anionic surfactants are preferred from the viewpoints of good solubility in water and good foaming, and salts of esters of isethionic acid with fatty acids having from 5 to 18 carbon atoms are more preferred. Furthermore, from the viewpoint of low irritation, amino acid-based anionic surfactants such as N-acylamino acid salts and N-acyl-N-methylamino acid salts are preferred.

[0022] From the viewpoint of improving foaming property, the content of the surfactant in the detergent composition is preferably 10% by mass or more, more preferably 15% by mass or more, and even more preferably 20% by mass or more. From the viewpoint of improving foam-rinsing properties, the content is preferably 50% by mass or less, more preferably 45% by mass or less, even more preferably 40% by mass or less, and even more preferably 35% by mass or less. The content of the surfactant in the detergent composition is preferably 10% by mass or more and 50% by mass or less, more preferably 15% by mass or more and 45% by mass or less, even more preferably 15% by mass or more and 40% by mass or less, and even more preferably 20% by mass or more and 35% by mass or less.

[0023] In the detergent composition, the mass ratio of the total amount of carbonate and organic acid to the surfactant [(carbonate + organic acid) / surfactant] is preferably 0.1 or more, more preferably 1.0 or more, and even more preferably 1.5 or more, from the viewpoint of foaming property, and is preferably 20 or less, more preferably 10 or less, and even more preferably 5 or less, from the viewpoint of improving detergency. The mass ratio of the total amount of carbonate and organic acid [(carbonate + organic acid) / surfactant] is preferably 0.1 or more and 20 or less, more preferably 1.0 or more and 10 or less, and even more preferably 1.5 or more and 5 or less. In the detergent composition, from the viewpoint of foaming property, the mass ratio of the organic acid to the carbonate [organic acid / carbonate] is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.2 or more, and preferably 10 or less, more preferably 5.0 or less, and even more preferably 1.0 or less. The mass ratio of the organic acid to the carbonate [organic acid / carbonate] is preferably 0.05 or more and 10 or less, more preferably 0.1 or more and 5.0 or less, and even more preferably 0.2 or more and 1.0 or less.

[0024] The total amount of carbonate and organic acid in the detergent composition is preferably 35% by mass or more, more preferably 40% by mass or more, and even more preferably 45% by mass or more from the viewpoint of foaming ability, and is preferably 70% by mass or less, more preferably 65% ​​by mass or less, and even more preferably 60% by mass or less from the viewpoint of improving foam retention. The total amount of carbonate and organic acid in the detergent composition is preferably 35% by mass or more and 70% by mass or less, more preferably 40% by mass or more and 65% by mass or less, and even more preferably 45% by mass or more and 60% by mass or less. The total amount of carbonate, organic acid, and surfactant in the detergent composition is preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more, from the viewpoint of improving detergency and foaming property, and is preferably 95% by mass or less, more preferably 90% by mass or less, and even more preferably 85% by mass or less, from the viewpoint of improving foam retention. The total amount of carbonate, organic acid, and surfactant in the detergent composition is preferably 50% by mass or more and 95% by mass or less, more preferably 60% by mass or more and 90% by mass or less, and even more preferably 70% by mass or more and 85% by mass or less.

[0025] <Moisture absorbent> The cleaning composition of the present invention preferably further contains a moisture absorbent. Examples of moisture absorbents used in the present invention include alkaline earth metal oxides such as magnesium oxide and calcium oxide, zinc oxide, etc. Among these, magnesium oxide is preferred from the viewpoints of storage stability and foaming properties.

[0026] From the viewpoint of improving storage stability, the content of the moisture absorbent in the detergent composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, still more preferably 2% by mass or more, and even more preferably 4% by mass or more. From the viewpoint of improving foaming ability, the content is preferably 10% by mass or less, more preferably 9% by mass or less, and even more preferably 8% by mass or less. The content of the moisture absorbent in the detergent composition is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.1% by mass or more and 9% by mass or less, even more preferably 1% by mass or more and 8% by mass or less, still more preferably 2% by mass or more and 8% by mass or less, and even more preferably 4% by mass or more and 8% by mass or less.

[0027] <Other ingredients> The detergent composition of the present invention may contain other ingredients commonly used in detergent compositions, such as excipients, binders, natural colorants, moisturizers, anti-inflammatory agents, disinfectants, antiperspirants, antioxidants, fragrances, and mixtures thereof, as long as the ingredients do not impair the object of the present invention.

[0028] Examples of the excipients used in the present invention include silicic acid, silicic anhydride (silica), magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, diatomaceous earth, talc, sericite, mica, kaolin, montmorillonite, clay, bentonite, vermiculite, titanium oxide-coated mica (titanium mica), bismuth oxychloride, boron nitride, zirconium oxide, titanium oxide, low-order titanium oxide, metal tungstate, hydroxyapatite, zeolite, ceramic powder, aluminum chlorohydrate, aluminum chloride, aluminum sulfate, basic aluminum bromide, basic Examples of suitable inorganic powders include aluminum iodide, aluminum zirconium chlorohydrate, zinc sulfate, basic aluminum zinc lactate, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, red iron oxide, black iron oxide, yellow iron oxide, ultramarine, Prussian blue, chromium oxide, chromium hydroxide, calamine, and carbon black; monosaccharides such as glucose, fructose, galactose, and mannose; disaccharides such as lactose, trehalose, and maltose; starches such as cornstarch and potato starch; and sugar alcohols such as mannitol, maltitol, xylitol, and erythritol. One or more of these may be used. From the viewpoints of solubility, granulation ability, foaming ability, and storage stability, the content of the excipient in the detergent composition is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less. The content of the excipient in the detergent composition is preferably 5% by mass or more and 50% by mass or less, more preferably 10% by mass or more and 40% by mass or less, and even more preferably 10% by mass or more and 30% by mass or less.

[0029] Examples of binders used in the present invention include hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, xanthan gum, and carrageenan, and one or more of these may be used. From the viewpoints of immediate solubility and productivity, the content of the binder in the detergent composition is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less. The content of the binder in the detergent composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.3% by mass or more and 5% by mass or less, and even more preferably 0.5% by mass or more and 3% by mass or less.

[0030] <Particle diameters of carbonate particles (a), organic acid particles (b), particles (A), and particles (B)> The median diameter (D50) in the present invention means the particle size at which the cumulative volume frequency calculated as a volume fraction is 50% calculated from the smallest particle size. Specifically, the median diameter can be measured by the method described in the Examples.

[0031] The median diameter of the carbonate particles (a) refers to the median diameter of the carbonate particles that are the raw material for the carbonate-containing particles (A), and from the viewpoints of improving productivity and storage stability, it is preferably 10 μm or more, more preferably 15 μm or more, and even more preferably 20 μm or more. From the viewpoint of improving the feel to the touch, it is 170 μm or less, preferably 150 μm or less, more preferably 120 μm or less, even more preferably 110 μm or less, still more preferably 100 μm or less, still more preferably 95 μm or less, and even more preferably 90 μm or less. The median diameter of the carbonate particles (a) is 170 μm or less, preferably 10 μm or more and 170 μm or less, more preferably 15 μm or more and 150 μm or less, even more preferably 20 μm or more and 120 μm or less, even more preferably 20 μm or more and 110 μm or less, even more preferably 20 μm or more and 100 μm or less, even more preferably 20 μm or more and 95 μm or less, and even more preferably 20 μm or more and 90 μm or less. Furthermore, from the same viewpoint as above and from the viewpoint of further improving the feel, the median diameter of the carbonate (carbonate particles (a)) used as a raw material when granulating the carbonate particles (a) is, in addition to the above range, even more preferably 100 μm or less, even more preferably 90 μm or less, even more preferably 70 μm or less, even more preferably 60 μm or less, and even more preferably 10 μm or more and 100 μm or less, even more preferably 10 μm or more and 90 μm or less, even more preferably 10 μm or more and 70 μm or less, and even more preferably 10 μm or more and 60 μm or less. Furthermore, when the carbonate particles (a) are used without granulation, the median diameter of the carbonate particles (a) is, in addition to the above range, even more preferably 80 μm or more, even more preferably 90 μm or more, and even more preferably 80 μm or more and 170 μm or less, even more preferably 80 μm or more and 150 μm or less, even more preferably 90 μm or more and 120 μm or less, and even more preferably 90 μm or more and 110 μm or less, from the same viewpoint as above and from the viewpoint of the balance between storage stability and feel.

[0032] The median diameter of the organic acid particles (b) refers to the median diameter of the organic acid particles that are the raw material for the organic acid-containing particles (B), and from the viewpoints of improving productivity and storage stability, it is preferably 10 μm or more, more preferably 15 μm or more, and even more preferably 20 μm or more. From the viewpoint of improving the feel, it is 170 μm or less, preferably 150 μm or less, more preferably 120 μm or less, even more preferably 110 μm or less, still more preferably 100 μm or less, still more preferably 95 μm or less, still more preferably 90 μm or less, and even more preferably 80 μm or less. The median diameter of the organic acid particles (b) is 170 μm or less, preferably 10 μm or more and 170 μm or less, more preferably 15 μm or more and 150 μm or less, even more preferably 20 μm or more and 120 μm or less, even more preferably 20 μm or more and 110 μm or less, even more preferably 20 μm or more and 100 μm or less, even more preferably 20 μm or more and 95 μm or less, even more preferably 20 μm or more and 90 μm or less, and even more preferably 20 μm or more and 80 μm or less. Furthermore, from the same viewpoint as above and from the viewpoint of further improving the feel, the more preferable median diameter of the organic acid (organic acid particles (b)) used as a raw material when granulating the organic acid particles (b) is, in addition to the above range, even more preferably 70 μm or less, even more preferably 60 μm or less, even more preferably 50 μm or less, and even more preferably 20 μm or more and 70 μm or less, even more preferably 20 μm or more and 60 μm or less, and even more preferably 20 μm or more and 50 μm or less. Furthermore, when the organic acid particles (b) are used without granulation, the median diameter of the organic acid particles (b) is, in addition to the above range, even more preferably 80 μm or more, even more preferably 90 μm or more, and even more preferably 80 μm or more and 170 μm or less, even more preferably 80 μm or more and 150 μm or less, even more preferably 90 μm or more and 120 μm or less, and even more preferably 90 μm or more and 110 μm or less, from the same viewpoint as above and from the viewpoint of the balance between storage stability and feel.

[0033] Furthermore, from the viewpoint of achieving high storage stability, suppressed roughness to the touch, and a good feel in use, the carbonate particles (a) and the organic acid particles (b) preferably have a coefficient of variation (CV) calculated as the standard deviation σ of particle diameters relative to the median diameter D, expressed by the following formula (1), of 95% or less, more preferably 90% or less, and even more preferably 85% or less. Coefficient of variation CV value (%) = [standard deviation of particle size σ] / [median diameter D] × 100 (Equation (1)) It is preferable that the raw material components other than the carbonate and the organic acid have a median diameter equal to or smaller than the median diameter of the carbonate particles (a) and the organic acid particles (b), and are usually 170 μm or smaller, for example, 5 μm or larger and 150 μm or smaller.

[0034] In the cleaning composition of the present invention, the median diameter of at least one of the particles (A) and the particles (B) is 80 μm or more, preferably 90 μm or more, more preferably 100 μm or more, even more preferably 110 μm or more, and even more preferably 120 μm or more. When the median diameter of at least one of the particles (A) and the particles (B) is within this range, the cleaning composition has excellent storage stability. From the viewpoint of further improving storage stability, the median diameters of both the particles (A) and the particles (B) are preferably 80 μm or more, more preferably 90 μm or more, and even more preferably 100 μm or more. From the viewpoint of improving productivity, the median diameter of only one of the particles (A) and the particles (B) is preferably 80 μm or more, more preferably 90 μm or more, and even more preferably 100 μm or more.

[0035] From the viewpoint of productivity, the median diameter of the particles (A) and the particles (B) is preferably 500 μm or less, more preferably 400 μm or less, and even more preferably 300 μm or less. Furthermore, when raw material particles are used as they are as the particles (A), i.e., when the particles (A) are carbonate particles (a), the preferred range of the median diameter of the particles (A) is the same as the preferred range of the median diameter of the carbonate particles (a) when used without granulation as described above. Furthermore, when raw material particles are used as they are as the particles (B), i.e., when the particles (B) are organic acid particles (b), the preferred range of the median diameter of the particles (B) is the same as the preferred range of the median diameter of the organic acid particles (b) when used without granulation as described above.

[0036] When the median diameter of the particles (A) is 80 μm or more, from the viewpoint of storage stability, the median diameter of the particles (A) is preferably 90 μm or more, more preferably 100 μm or more, even more preferably 110 μm or more, and even more preferably 120 μm or more. From the viewpoint of productivity, the median diameter is preferably 500 μm or less, more preferably 400 μm or less, and even more preferably 300 μm or less. The median diameter of the particles (A) is preferably 80 μm or more and 500 μm or less, more preferably 90 μm or more and 400 μm or less, even more preferably 100 μm or more and 300 μm or less, still more preferably 110 μm or more and 300 μm or less, and even more preferably 120 μm or more and 300 μm or less. In particular, when the particles (A) are granulated particles, from the same viewpoint as above and from the viewpoint of further improving storage stability, the particle size is more preferably 110 μm or more, even more preferably 120 μm or more, and even more preferably 110 μm or more and 300 μm or less, and even more preferably 120 μm or more and 300 μm or less.

[0037] When the median diameter of the particles (B) is 80 μm or more, from the viewpoint of storage stability, the median diameter of the particles (B) is preferably 90 μm or more, more preferably 100 μm or more, even more preferably 110 μm or more, and even more preferably 120 μm or more. From the viewpoint of productivity, the median diameter is preferably 500 μm or less, more preferably 400 μm or less, and even more preferably 300 μm or less. The median diameter of the particles (B) is preferably 80 μm or more and 500 μm or less, more preferably 90 μm or more and 400 μm or less, even more preferably 100 μm or more and 300 μm or less, still more preferably 110 μm or more and 300 μm or less, and even more preferably 120 μm or more and 300 μm or less. In particular, when the particles (B) are granulated particles, from the same viewpoint as above and from the viewpoint of further improving storage stability, the particle size is more preferably 110 μm or more, even more preferably 120 μm or more, and even more preferably 110 μm or more and 300 μm or less, and even more preferably 120 μm or more and 300 μm or less.

[0038] In addition, in the cleaning composition of the present invention, the median diameter of the particles (A) is equal to or larger than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is equal to or larger than the median diameter of the organic acid particles (b). When the median diameter of the carbonate particles (a) is within the range of the median diameter of the particles (A), the carbonate particles (a) can be used as they are as particles (A). Similarly, when the median diameter of the organic acid particles (b) is within the range of the median diameter of the particles (B), the organic acid particles (b) can be used as they are as particles (B). When the median diameter of the particles (A) is larger than that of the carbonate particles (a), the size can be adjusted, for example, by granulation, as described below. Similarly, when the median diameter of the particles (B) is larger than that of the organic acid particles (b), the size can be adjusted, for example, by granulation, as described below.

[0039] <Granulated particles> In the present invention, from the viewpoint of achieving high storage stability, suppressed roughness to the touch, and a good feel in use, it is preferable that the median diameter of the carbonate-containing particles (A) be made larger than the median diameter of the carbonate particles (a), which are the raw material, by granulating the carbonate particles (a). In addition, from the viewpoint of achieving high storage stability, suppressed roughness to the touch, and a good feel when used, it is preferable that the median diameter of the particles (B) containing an organic acid be made larger than the median diameter of the organic acid particles (b), which are the raw material for the particles (B), by granulating the organic acid particles (b). The content of granulated particles in the particles constituting the detergent composition of the present invention can be determined by observing the particles with an SEM and measuring the number ratio. At least 20 randomly selected particles were observed and the ratio was determined.

[0040] When the carbonate-containing particles (A) are granulated particles, the particles (A) may be granulated particles obtained by granulating carbonate particles (a) alone. However, from the viewpoint of suppressing the amount of fine powder, the particles (A) are preferably granulated with a component other than the organic acid, such as one or more selected from the group consisting of a surfactant, an excipient, a binder, and a moisture absorbent, and are particularly preferably granulated with all components other than the organic acid. When the particles (B) containing an organic acid are granulated particles, the particles (B) may be granulated particles obtained by granulating the organic acid particles (b) alone. However, from the viewpoint of suppressing the amount of fine powder, the particles (B) are preferably granulated with components other than the carbonate, such as one or more selected from the group consisting of surfactants, excipients, binders, and moisture absorbents, and are particularly preferably granulated with all components other than the carbonate. Furthermore, it is preferable that the carbonate-containing particles (A) or the organic acid-containing particles (B) are granulated particles further containing the surfactant and the moisture absorbent. By granulating the surfactant and the moisture absorbent together, the amount of fine powder derived from the surfactant and the moisture absorbent can be reduced, and choking caused by scattering of the fine powder during use of the detergent composition can be prevented.

[0041] It is preferable that at least one of the particles (A) containing a carbonate and the particles (B) containing an organic acid contains granulated particles obtained by granulating raw material particles, from the viewpoint of improving storage stability and improving the feel when used. In addition, it is preferable that the particles having a median diameter of 80 μm or more in the detergent composition comprise granulated particles obtained by granulating raw material particles, from the viewpoints of improving storage stability and improving the feel when used. Here, "raw material particles" refers to at least one of carbonate particles (a) and organic acid particles (b), and "granulated particles obtained by granulating raw material particles" refers to particles (A) when carbonate particles (a) are granulated, particles (B) when organic acid particles (b) are granulated, and particles (A) and particles (B) when carbonate particles (a) and organic acid particles (b) are granulated, respectively. From the viewpoint of improving storage stability and improving the feel when used, it is preferable that both the carbonate-containing particles (A) and the organic acid-containing particles (B) are granulated. However, from the viewpoint of productivity, it is preferable that only one of the particles (A) or the particles (B) is granulated, and the other is used as raw material particles. From the viewpoint of production efficiency, it is preferable that the organic acid-containing particles (B) are granulated particles, and that the carbonate-containing particles (A) are raw material particles, i.e., carbonate particles (a), are used as they are.

[0042] From the viewpoint of suppressing the amount of fine powder, it is preferable that at least one of particles (A) and particles (B) is granulated with components other than carbonate particles (a) and organic acid particles (b), such as one or more selected from the group consisting of surfactants, excipients, water-soluble polymers (binders, texture modifiers), and moisture absorbents, and it is particularly preferable that at least one of particles (A) and particles (B) is granulated with all components other than carbonate particles (a) and organic acid particles (b). From the viewpoint of further improving storage stability and instantaneous solubility, it is preferable that particles (A) and particles (B) are granulated together, and from the viewpoint of improving productivity, it is preferable that either particles (A) or particles (B) is granulated. It is also preferred that the particles (A) or the particles (B) contain a surfactant, or that both the particles (A) and the particles (B) contain a surfactant. Specifically, the detergent composition of the present invention may contain carbonate particles (a) and particles (B) containing an organic acid and a surfactant, particles (A) containing a carbonate and a surfactant and organic acid particles (b), or particles (A) containing a carbonate and a surfactant and particles (B) containing an organic acid and a surfactant.

[0043] In the detergent composition of the present invention, the content of fine powder having a size of 10 μm or less of all particles constituting the detergent composition is preferably 3.5% by mass or less, more preferably 3.3% by mass or less, and even more preferably 3.0% by mass or less, from the viewpoint of improving the feeling of use, particularly preventing choking. From the viewpoint of productivity, the content is preferably 0.001% by mass or more, more preferably 0.002% by mass or more, and even more preferably 0.003% by mass or more. The content of fine powder having a size of 10 μm or less of all particles constituting the detergent composition is preferably 0.001% by mass or more and 3.5% by mass or less, more preferably 0.002% by mass or more and 3.3% by mass or less, and even more preferably 0.003% by mass or more and 3.0% by mass or less.

[0044] <Granulation method> The method for granulating the particles (A) or the particles (B) may be any of a fluidized bed granulation method, an agitation granulation method, a tumbling granulation method, and an extrusion granulation method. Among these, the fluidized bed granulation method is preferred from the viewpoint of improving the solubility of the detergent composition in water. Specifically, for example, when granulating particles (A), raw materials other than the organic acid are charged into a fluidized bed granulator, and a binder liquid prepared by dissolving a binder in water, ethanol, or a mixture thereof is added to the uniformly mixed powder and granules, thereby granulating the particles. Similarly, when granulating particles (B), raw materials other than the carbonate are charged into a fluidized bed granulator, and a binder liquid prepared by dissolving a binder in water, ethanol, or a mixture thereof is added to the uniformly mixed powder and granules, thereby granulating the particles. From the viewpoint of productivity, the binder content (solid content) in the binder liquid is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 5% by mass or less. The binder content in the binder liquid is preferably 0.1 to 10% by mass, more preferably 0.3 to 8% by mass, even more preferably 0.5 to 5% by mass.

[0045] <Method of manufacturing the cleaning composition> The method for producing the detergent composition of the present invention includes a step of using, as raw materials, carbonate particles (a) having a median diameter of 170 μm or less and organic acid particles (b) having a median diameter of 170 μm or less, and granulating at least one of the carbonate particles (a) and the organic acid particles (b) to produce granulated particles having a median diameter of 80 μm or more (hereinafter also referred to as the "granulated particle production step"). By using carbonate particles (a) and organic acid particles (b) having a median diameter of 170 μm or less as raw material particles and granulating at least one of them to have a median diameter of 80 μm or more, it is possible to produce a detergent composition that has improved storage stability, excellent solubility, reduced roughness to the touch, and a pleasant feel when used. The granulated particle preparation step can be carried out by the granulation method described above. Granulating at least one of the carbonate particles (a) and the organic acid particles (b) includes granulating both the carbonate particles (a) and the organic acid particles (b) separately, and granulating only one of the carbonate particles (a) and the organic acid particles (b). Specifically, either the carbonate particles (a) or the organic acid particles (b) may be used as raw material particles without granulation, or the carbonate particles (a) and the organic acid particles (b) may be granulated separately to form granulated carbonate particles (A) and granulated organic acid particles (B). From the viewpoints of further improving storage stability and instantaneous solubility, it is preferable to granulate both the carbonate particles (a) and the organic acid particles (b) separately. From the viewpoint of improving productivity, it is preferable to granulate only one of the carbonate particles (a) and the organic acid particles (b). After the granulated particle preparation step, if the carbonate particles (a) and the organic acid particles (b) are granulated separately, the granulated particles (particles (A) and particles (B)) are then mixed together by a known means to produce the detergent composition. Alternatively, if only either the carbonate particles (a) or the organic acid particles (b) are granulated, the granulated particles and non-granulated particles are mixed together by a known means to produce the detergent composition.

[0046] <Method of using the cleaning composition> The cleansing composition of the present invention can be suitably used for washing the face, hair, and body, for example. The cleaning composition of the present invention is a foaming cleaning composition that starts foaming spontaneously upon addition of water. Therefore, it foams quickly and does not require a special foaming process that requires time and effort, making it easy to use. The method of using the detergent composition of the present invention includes, for example, placing the detergent composition in the palm of the hand, adding water to the detergent composition, thoroughly blending the detergent composition with the water on the palm of the hand, allowing the detergent composition to foam naturally, and then lightly lathering the composition. The detergent composition is then applied to the face, hair, whole body, or the like to be cleaned, and washed. From the viewpoints of improving the solubility of the detergent composition and enhancing the foaming property, the amount of water added to the detergent composition is such that the mass ratio of the detergent composition to the added water (detergent composition / water) is preferably 1 / 30 or more, more preferably 1 / 25 or more, even more preferably 1 / 20 or more, and is preferably 1 / 0.5 or less, more preferably 1 / 1 or less, even more preferably 1 / 2 or less. The temperature of the water added to the detergent composition is not particularly limited, but is preferably 15°C or higher and 50°C or lower, more preferably 15°C or higher and 45°C or lower, and even more preferably 20°C or higher and 45°C or lower. From the viewpoint of foam retention, the cleanser composition is applied to the skin preferably within 5 minutes, more preferably within 3 minutes, even more preferably within 2 minutes, and even more preferably within 1 minute and 30 seconds after adding water. The cleansing composition of the present invention can be suitably used in face care products such as face washes, and body care products such as hand soaps and body soaps. A foaming detergent product using the detergent composition of the present invention can be provided by being enclosed in a package. The detergent composition of the present invention is unlikely to cause swelling of the package due to the generation of carbon dioxide gas even when enclosed in the package and stored, and therefore has excellent storage stability in the form of a product enclosed in a package. The shape of the packaging material is not particularly limited as long as it has a structure that can encapsulate the detergent composition, and examples thereof include a bag shape, a bottle shape, etc. Among these, a bag-shaped packaging material is preferred. The material constituting the packaging material is not particularly limited as long as it can encapsulate the detergent composition. For example, in the case of a bag-shaped packaging material, a resin film or a laminated film in which an inorganic thin film made of a metal or metal oxide is laminated on a resin film can be used.

[0047] In relation to the above-described embodiments, the present invention further discloses the following. <1> A cleaning composition containing a carbonate, an organic acid, and a surfactant, The cleaning composition contains particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) do not contain an organic acid, and the particles (B) do not contain a carbonate, the median diameter of the carbonate particles (a) that are raw materials for the particles (A) and the median diameter of the organic acid particles (b) that are raw materials for the particles (B) are 170 μm or less; At least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, the median diameter of the particles (A) is equal to or larger than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is equal to or larger than the median diameter of the organic acid particles (b); Cleaning composition. <2> At least one of the particles (A) and the particles (B) includes granulated particles obtained by granulating raw material particles. <1> The cleaning composition according to claim 1. <3> Further, it contains a moisture absorbent, <1> or <2> The cleaning composition according to claim 1. <4> The organic acid contains one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid. <1> ~ <3> The cleaning composition according to any one of the above. <5> The carbonate contains one or more selected from the group consisting of sodium carbonate and sodium bicarbonate. <1> ~ <4> The cleaning composition according to any one of the above. <6> The moisture absorbent is magnesium oxide. <3> ~ <5> The cleaning composition according to any one of the above. <7> The particles (A) or the particles (B) are granulated particles further containing the surfactant and the moisture absorbent. <3> ~ <6> The cleaning composition according to any one of the above. <8> The content of the carbonate is 10% by mass or more and 60% by mass or less. <1> ~ <7> The cleaning composition according to any one of the above. <9> The content of the organic acid is 5% by mass or more and 60% by mass or less. <1> ~ <8> The cleaning composition according to any one of the above. <10> The content of the surfactant is 10% by mass or more and 50% by mass or less. <1> ~ <9> The cleaning composition according to any one of the above. <11> a mass ratio of the total amount of the carbonate and the organic acid to the surfactant [(carbonate + organic acid) / surfactant] of 0.1 or more and 20 or less; <1> ~ <10> The cleaning composition according to any one of the above. <12> a mass ratio of the organic acid to the carbonate [organic acid / carbonate] of 0.05 or more and 10 or less; <1> ~ <11> The cleaning composition according to any one of the above. <13> the total amount of the carbonate and the organic acid is 35% by mass or more and 70% by mass or less; <1> ~ <12> The cleaning composition according to any one of the above. <14> the median diameter of the carbonate particles (a) that are raw materials for the particles (A) and the median diameter of the organic acid particles (b) that are raw materials for the particles (B) are 20 μm or more and 120 μm or less, and the median diameter of at least one of the particles (A) and the particles (B) is 90 μm or more and 400 μm or less; <1> ~ <13> The cleaning composition according to any one of the above. <15> The content of the carbonate is 20% by mass or more and 50% by mass or less, and the content of the organic acid is 7% by mass or more and 30% by mass or less. <1> ~ <14> The cleaning composition according to any one of the above. <16> the content of the surfactant is 15% by mass or more and 45% by mass or less, and the mass ratio of the total amount of the carbonate and the organic acid to the surfactant [(carbonate + organic acid) / surfactant] is 1.0 or more and 10 or less; <1> ~ <15> The cleaning composition according to any one of the above. <17> The particles (A) contain a surfactant. <1> ~ <16> 10. The cleaning composition according to claim 1, wherein <18> The particles (B) contain a surfactant. <1> ~ <16> 10. The cleaning composition according to claim 1, wherein <19> Both the particles (A) and the particles (B) contain a surfactant. <1> ~ <16> 10. The cleaning composition according to claim 1, wherein <20> <1> ~ <19> A method for producing the cleaning composition according to any one of the above, The method includes a step of using carbonate particles (a) having a median diameter of 170 μm or less and organic acid particles (b) having a median diameter of 170 μm or less as raw materials, and granulating at least one of the carbonate particles (a) and the organic acid particles (b) to prepare granulated particles having a median diameter of 80 μm or more, A method for producing a cleaning composition. <21> The median diameter of the carbonate particles (a) and the organic acid particles (b) is 20 μm or more and 120 μm or less, and the median diameter of the granulated particles is 90 μm or more and 400 μm or less. <20> A method for producing the cleaning composition described in claim 1. [Example]

[0048] The present invention will be described below with reference to examples, but the present invention is not limited to the scope of the examples. Measurements in the examples were carried out by the following methods.

[0049] [Method for measuring median diameter and CV value] The particle sizes of carbonate particles (a), organic acid particles (b), particles (A), and particles (B) were measured for median diameter and CV value using 3 g of each using a Camsizer XT (particle size measuring device, manufactured by Retsch Co., Ltd.) For particles (A) and particles (B), measurements were taken after granulation only when they were used as granules.

[0050] [Method for measuring the content (number ratio) of granulated particles in particles] The powder or granular detergent composition was sieved through a sieve with 100 μm openings, and the particles remaining on the sieve were collected with a very small spatula. The collected particles were wrapped around a 5 mm × 5 mm carbon tape and observed under a Hitachi tabletop microscope, Microscope TM3030 (manufactured by Hitachi High-Technologies Corporation). 20 particles were observed, and the content (number ratio) was calculated, with the aggregates considered as granulated particles.

[0051] [Preparation of mixed surfactants] 300 g of sodium N-myristoyl-L-glutamate (Amisoft MS manufactured by Ajinomoto Co., Inc.) and 291.5 g of sodium N-lauroyl-L-glutamate (Amisoft LS manufactured by Ajinomoto Co., Inc.) were mixed at room temperature to obtain a mixed surfactant.

[0052] [Example 1] According to the formulation shown in Table 1, a cleaning composition was obtained. 67.4 g of citric acid (citric acid anhydrous 60 manufactured by Iwata Chemical Industry Co., Ltd.), 118.3 g of mixed surfactants, 25.2 g of magnesium oxide (manufactured by Kyowa Chemical Industry Co., Ltd.), and 84.0 g of talc (SW-K4 manufactured by Asada Flour Milling Co., Ltd.) were charged into a fluidized bed granulator (FD-MP-01E manufactured by Powrex Corporation) with an air volume of 0.3 m 3The mixture was granulated while adding 314 g of a 1.6% aqueous carrageenan solution (5.0 g solids) at a rate of 5 g / min under conditions of a flow rate of 5 g / min and an intake air temperature of 80°C, yielding granules with a particle size of 172 μm. The resulting granules and 203 g of sodium bicarbonate (hereinafter also referred to as sodium bicarbonate, manufactured by AGC Inc.) were placed in a transparent vinyl bag and mixed by hand until uniform in the bag to produce a detergent composition. The resulting detergent compositions were evaluated according to the methods described below, and the results are shown in Table 1.

[0053] [Examples 2, 3, 5 to 8] A detergent composition was obtained in the same manner as in Example 1, except that the formulation shown in Table 1 was used. The resulting detergent compositions were evaluated according to the methods described below, and the results are shown in Table 1.

[0054] [Example 4] Sodium bicarbonate was granulated according to the formulation shown in Table 1. 139.9 g of sodium bicarbonate (AGC Corporation), 81.5 g of mixed surfactants, 17.3 g of magnesium oxide (Kyowa Chemical Industry Co., Ltd.), and 57.8 g of talc (SW-K4, Asada Flour Milling Co., Ltd.) were charged into a fluidized bed granulator (FD-MP-01E, Powrex Corporation). Granulation was carried out under the same conditions as in Example 1, while adding 216 g of a 1.6% aqueous carrageenan solution (solid content: 3.5 g) at a rate of 5 g / min, yielding granules with a particle size of 127 μm. The resulting granules and 46.6 g of citric acid were mixed by hand in a transparent vinyl bag until uniform, producing a detergent composition. The resulting detergent compositions were evaluated according to the methods described below, and the results are shown in Table 1.

[0055] [Comparative Examples 1 to 3] According to the formulation shown in Table 2, a cleaning composition was obtained. In Comparative Examples 1 to 3, all ingredients were placed in a bag without granulation and mixed by hand in the bag to obtain a detergent composition. The resulting detergent compositions were evaluated according to the methods described below, and the results are shown in Table 2.

[0056] [Storage stability] 3.9 g of each detergent composition was sealed in an 80 mm × 50 mm × 18 mm aluminum package at 50°C and 50% RH, and the amount of expansion of the aluminum package was measured before and after storage at 50°C for 4 weeks. Specifically, a water tank filled with water at 25°C was placed on a balance and its weight was measured. Next, the aluminum package containing the detergent composition was completely submerged in the water tank and its mass was measured. The difference in mass between before and after submerging the aluminum package in water was converted into volume using Archimedes' principle, assuming a water density of 1.0 g / ml, and this was used as the volume of the aluminum package before storage. The same measurement was then performed after 4 weeks of storage to determine the volume of the aluminum package after storage, and the amount of expansion of the aluminum package after storage was calculated from the difference in volume of the aluminum package before and after storage. A smaller amount of expansion indicates better storage stability.

[0057] [touch] 1 g of the detergent composition was placed in the palm of one hand, and 10 g of water at 42°C was dropped onto the detergent composition. The detergent composition was thoroughly soaked in water on the palm of one hand, and after allowing the composition to foam naturally (approximately 10 seconds after the water was dropped), the palm of one hand was placed together with the other hand to create a lather. While continuing to lather, a panel of three experts evaluated the feel of the lather within 3 minutes of the water drop according to the following criteria, and the results were determined by discussion among the expert panels. 1: No roughness felt from the start 2: It feels rough at first, but it disappears as you start to lather. 3: It feels rough at first, but it disappears while whipping 4: Feels rough, but disappears after lathering 5: Feels rough and doesn't go away even after lathering (The above "initial foaming" refers to within 1 minute after dripping water onto the cleanser composition, "during foaming" refers to more than 1 minute but not more than 2 minutes after the same, and "after foaming" refers to more than 2 minutes but not more than 3 minutes after the same.)

[0058] [Table 1]

[0059] [Table 2]

[0060] *1 "Organic acid granulation" in the "Granulation state" column in Tables 1 and 2 refers to a state in which the organic acid and all components other than the carbonate (sodium bicarbonate) (surfactant, excipient, binder, and moisture absorbent) are granulated, and these granulated particles correspond to the organic acid-containing particles (B) of the present invention. In the case of organic acid granulation, the carbonate (sodium bicarbonate) was used as raw material particles that were not granulated (corresponding to the carbonate-containing particles (A)). "Carbonate granulation" refers to a state in which carbonate and all components other than the organic acid (citric acid) (surfactant, excipient, binder, and moisture absorbent) are granulated, and these granulated particles correspond to the carbonate-containing particles (A) of the present invention. In the case of carbonate granulation, the organic acid (citric acid) was used as raw material particles that were not granulated (corresponding to the organic acid-containing particles (B)). "Ungranulated" refers to a state in which all powder ingredients are used without granulation. *2 Carrageenan was dissolved in purified water to prepare a 1.6% carrageenan aqueous solution. However, since the purified water evaporates during the manufacturing process, the carrageenan content in Tables 1 and 2 indicates the solid content. *3 The particle sizes in Tables 1 and 2 indicate the median diameter.

[0061] It can be seen from Tables 1 and 2 that the detergent compositions of the present examples have excellent storage stability and a pleasant feel to the touch. Furthermore, all of the detergent compositions of this example were excellent in foaming properties, foam removal, and foam retention. [Industrial Applicability]

[0062] According to the present invention, there is provided a cleanser composition that has high storage stability, is suppressed in roughness to the touch, and has a good feel in use. The cleanser composition can be used in face care products such as facial cleansers, and body care products such as hand soaps and body soaps.

Claims

1. A cleaning composition containing a carbonate, an organic acid, and a surfactant, The cleaning composition contains particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) do not contain an organic acid, and the particles (B) do not contain a carbonate, the median diameter of the carbonate particles (a) that are raw materials for the particles (A) and the median diameter of the organic acid particles (b) that are raw materials for the particles (B) are 170 μm or less; At least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, the median diameter of the particles (A) and the particles (B) is 500 μm or less, the median diameter of the particles (A) is equal to or larger than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is equal to or larger than the median diameter of the organic acid particles (b); Cleaning composition.

2. The cleaning agent composition according to claim 1 , wherein at least one of the particles (A) and the particles (B) comprises granulated particles obtained by granulating raw material particles.

3. The cleaning composition according to claim 1, further comprising a moisture absorbent.

4. 2. The cleaning composition according to claim 1, wherein the organic acid comprises at least one selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid.

5. 2. The cleaning composition according to claim 1, wherein the carbonate comprises at least one selected from the group consisting of sodium carbonate and sodium bicarbonate.

6. 4. The cleaning composition according to claim 3, wherein the moisture absorbent is magnesium oxide.

7. The cleaning composition according to claim 3 , wherein the particles (A) or the particles (B) are granulated particles further containing the surfactant and the moisture absorbent.

8. The cleaning composition according to claim 7 , wherein the particles (A) or the particles (B), or both the particles (A) and the particles (B), contain a surfactant.

9. A method for producing the cleaning composition according to any one of claims 1 to 8, comprising: The method includes a step of using carbonate particles (a) having a median diameter of 170 μm or less and organic acid particles (b) having a median diameter of 170 μm or less as raw materials, and granulating at least one of the carbonate particles (a) and the organic acid particles (b) to prepare granulated particles having a median diameter of 80 μm or more. A method for producing a cleaning composition.

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