Cleansing agent 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 detergent composition.

Background Art

[0002] In recent years, foam-type facial cleansers and body soaps have attracted attention from the viewpoint of easy availability. Among these, a composition for foaming cosmetics that generates fine bubbles of carbon dioxide gas by utilizing the property that a mixture of a carbonate and an organic acid generates carbon dioxide gas by adding a small amount of water has been reported (Patent Document 1). It is disclosed that this composition for foaming cosmetics can be used as a facial cleansing soap, shaving foam, shampoo, or body soap. However, in the composition for foaming cosmetics described in Patent Document 1, even a trace amount of water in the mixture of the carbonate and the organic acid generates carbon dioxide gas during storage, and water is generated as a by-product by the reaction, so the reaction occurs chain-like. As a result, there are problems such as the package swelling or the foaming property decreasing during use.

[0003] Regarding this problem, techniques for improving storage stability have been reported. For example, Patent Document 2 discloses a briquette preparation having improved storage stability by containing polyethylene glycol and polyvinylpyrrolidone. Further, Patent Document 3 discloses a bath agent composition having good storage stability by containing the following components (A) to (C): (A) 25 to 55% by mass of an alkali metal carbonate in which particles having a particle diameter of 180 μm or more are 50% or more, (B) 40 to 70% by mass of an organic acid in which particles having a particle diameter of 180 μm or more are 50% or more, and (C) 0.01 to 10% by mass of a hardly water-soluble metal oxide.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

[0005] However, in the technique described in Patent Document 2, since a polymer compound that is solid at room temperature such as polyethylene glycol is used, the immediate solubility of the detergent decreases, resulting in roughness due to the undissolved components and deterioration of the feel during use. Therefore, it has been found that the usability as a detergent is impaired. Further, Patent Document 3 is a technique related to a bath agent. When the bath agent composition dissolves on the surface of the bath water, carbon dioxide gas escapes without being sufficiently dissolved in the bath water. Therefore, it is necessary to precipitate the bath agent composition in the bath water and let it stay for a certain period of time in order to dissolve the bath agent composition in the bath water. Therefore, it is premised that raw material particles having a certain particle size are used as the particles constituting the bath agent composition. On the other hand, in the case of a detergent composition, immediate solubility that allows it to dissolve immediately in a small amount of water in a short time is required. Therefore, when particles having a large particle size are used as the detergent composition, the solubility is poor, and the same problem as described above occurs. Different from a bath agent, a detergent composition directly touches the skin such as the face and body, and thus a delicate feel (touch) is required. Therefore, an object of the present invention is to provide a detergent composition having high storage stability, suppressing roughness of the touch, and having good usability. [Means for Solving the Problems]

[0006] As a result of investigations, the inventors of the present invention have found that a detergent composition containing a carbonate, an organic acid, and a surfactant, wherein the carbonate and the organic acid are each contained in the form of independent particles as particles (A) containing a carbonate (hereinafter also simply referred to as "particles (A)") and particles (B) containing an organic acid (hereinafter also simply referred to as "particles (B)"), and the median diameters of the particles (a) of the carbonate (hereinafter also referred to as "carbonate particles (a)") and the particles (b) of the organic acid (hereinafter also referred to as "organic acid particles (b)"), which are the respective raw materials, are not more than a predetermined value, and the median diameter of at least one of the particles (A) and the particles (B) is not less than a predetermined value, and the median diameters of the particles (A) and the particles (B) are not less than the median diameters of the respective raw material particles, solves the above problems. The present invention relates to the following. A detergent composition containing a carbonate, an organic acid, and a surfactant, wherein the detergent 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) which are the raw material of the particles (A), and the median diameter of the organic acid particles (b) which are the raw material of 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 not less than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is not less than the median diameter of the organic acid particles (b), detergent composition.

Advantages of the Invention

[0007] According to the present invention, it is possible to provide a detergent composition having high storage stability, suppressed roughness of the feel, and good usability.

Embodiments for Carrying Out the Invention

[0008] The detergent composition of the present invention is a detergent composition containing a carbonate, an organic acid, and a surfactant, wherein The detergent 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) which are the raw material of the particles (A) and the median diameter of the organic acid particles (b) which are the raw material of 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 not less than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) is not less than the median diameter of the organic acid particles (b). In addition to the cleaning action of the surfactant, when the detergent composition of the present invention is dissolved in water, the carbonate and the organic acid react to generate carbon dioxide gas, whereby excellent detergency can be exhibited. Further, the cleaning composition of the present invention is in the form of powder or granules and is mainly used for cleaning the face, body, etc. A cleaning composition applied to the skin such as the face and body is required to have a good feel without roughness when foamed, and also needs to be dissolved immediately in a short time, and it is desirable that the particle size of the particles constituting the cleaning composition is small. However, when the particle size of the cleaning composition is small, even if a hygroscopic agent is added, its effect is not sufficient, the generation of carbon dioxide gas in the packaging material cannot be suppressed, and it has been found that the storage stability is poor. Further, as a result of repeated studies, it has been found that in order to suppress the generation of carbon dioxide gas during storage, it is necessary to increase the particle size of the carbonate or organic acid to a specific value or more. As a result of intensive research to solve this conflicting requirement, the present inventors have found that by setting the diameters of the raw material particles and the particles constituting the produced cleaning composition within specific ranges respectively, it is possible to achieve both instant solubility and storage stability. That is, according to the cleaning composition of the present invention, the median diameter of the carbonate particles (a) and the organic acid particles (b) is below a predetermined value, and the median diameter of at least one of the particles (A) containing carbonate and the particles (B) containing organic acid is above a predetermined value, the median diameter of the particle (A) is equal to or larger than the median diameter of the carbonate particles (a) which is its raw material, and the median diameter of the particle (B) is equal to or larger than the median diameter of the organic acid particles (b) which is its raw material, thereby enhancing the storage stability, suppressing the roughness of the feel, and obtaining a good feel. Further, the carbonate and the organic acid are each contained in the form of independent particles as the particles (A) containing carbonate and the particles (B) containing organic acid, whereby the storage stability and the foaming property can be further improved.

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

[0010] Examples of the carbonate 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; etc. One or more of these can be used. Among the above, from the viewpoint of improving foamability, the carbonate preferably contains one or more selected from the group consisting of sodium carbonate (Na2CO3) and sodium hydrogen carbonate (NaHCO3), and more preferably contains sodium hydrogen carbonate. The content of one or more selected from the group consisting of sodium carbonate and sodium hydrogen carbonate 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, from the viewpoint of improving foamability.

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

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

[0013] Examples of the organic acid used in the present invention include citric acid, tartaric acid, malic acid, malonic acid, pyridonecarboxylic acid, succinic acid, fumaric acid, adipic acid, glutaric acid, ascorbic acid, etc., and one or more of these can be used. Among the above, from the viewpoints of foaming property 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. 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, more preferably 100% by mass, from the viewpoint of improving foaming property.

[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, still more preferably 10% by mass or more. And from the viewpoint of improving foam retention, it is preferably 60% by mass or less, more preferably 50% by mass or less, still more preferably 40% by mass or less, even more preferably 30% by mass or less, even more preferably 20% by mass or less. And 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, even more preferably 7% by mass or more and 30% by mass or less, even more preferably 10% by mass or more and 20% by mass or less.

[0015] <Surfactant> The detergent composition of the present invention contains a surfactant. Examples of the surfactant 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 surfactant〕 Specific examples of anionic surfactants include N-acyl amino acid salts, N-acyl-N-methyl amino acid salts, fatty acid salts, salts of esters of fatty acids having 5 to 18 carbon atoms and isethionic acid, alkyl or alkenyl sulfonates having 10 to 18 carbon atoms, polyoxyalkylene alkyl ether sulfate ester salts, and linear alkylbenzene sulfonates.

[0017] Examples of counterions of anionic groups of anionic surfactants include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as calcium ions and magnesium ions; ammonium ions; alkanolammonium having 1 to 3 alkanol groups having 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.), and sodium ions and potassium ions are preferred, and sodium ions are 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] As counterions for the cationic groups of cationic surfactants, examples include alkyl sulfate ions having 1 to 3 carbon atoms, sulfate ions, phosphate ions, carboxylic acid ions having 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 obtaining raw materials, halide ions are preferred, and chloride ions are more preferred.

[0020] Amphoteric Surfactant 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, from the viewpoints of good solubility in water and good foaming property, anionic surfactants are preferred, and salts of esters of fatty acids having 5 to 18 carbon atoms and isethionic acid are more preferred. Also, from the viewpoint of low irritation, amino acid-based anionic surfactants such as N-acyl amino acid salts and N-acyl-N-methyl amino acid salts are preferred.

[0022] From the perspective of improving foaming property, the content of surfactant in the detergent composition is preferably 10% by mass or more, more preferably 15% by mass or more, still more preferably 20% by mass or more. And from the perspective of improving foam breakage, it is preferably 50% by mass or less, more preferably 45% by mass or less, still more preferably 40% by mass or less, and even more preferably 35% by mass or less. And the content of 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, still 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, still more preferably 1.5 or more from the perspective of foaming property, and is preferably 20 or less, more preferably 10 or less, still more preferably 5 or less from the perspective of improving detergency. And 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 and 20 or less, more preferably 1.0 or more and 10 or less, still more preferably 1.5 or more and 5 or less. In the detergent composition, the mass ratio of organic acid to carbonate [organic acid / carbonate] is preferably 0.05 or more, more preferably 0.1 or more, still more preferably 0.2 or more from the perspective of foaming property, and is preferably 10 or less, more preferably 5.0 or less, still more preferably 1.0 or less. And the mass ratio of organic acid to 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, still more preferably 0.2 or more and 1.0 or less.

[0024] From the perspective of foaming property, 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, still more preferably 45% by mass or more. And from the perspective of improving foam retention, it is preferably 70% by mass or less, more preferably 65% by mass or less, still more preferably 60% by mass or less. And 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, still more preferably 45% by mass or more and 60% by mass or less. From the perspectives of improving detergency and foaming property, 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, still more preferably 70% by mass or more. And from the perspective of improving foam retention, it is preferably 95% by mass or less, more preferably 90% by mass or less, still more preferably 85% by mass or less. And 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, still more preferably 70% by mass or more and 85% by mass or less.

[0025] <Humectant> The detergent composition of the present invention preferably further contains a humectant. Examples of the humectant used in the present invention include alkaline earth metal oxides such as magnesium oxide and calcium oxide, and zinc oxide. Among the above, from the perspectives of storage stability and foaming property, magnesium oxide is preferably used.

[0026] From the perspective of improving storage stability, the content of the hygroscopic agent in the detergent composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, still more preferably 1% by mass or more, even more preferably 2% by mass or more, and even more preferably 4% by mass or more. From the perspective of improving foaming properties, it is preferably 10% by mass or less, more preferably 9% by mass or less, and still more preferably 8% by mass or less. And the content of the hygroscopic agent 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, still more preferably 1% by mass or more and 8% by mass or less, even 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 components> The detergent composition of the present invention may contain, as other components, components generally used in detergent compositions, as long as the object of the present invention is not impaired. Examples of such other components include excipients, binders, natural pigments, humectants, anti-inflammatory agents, bactericides, antiperspirants, antioxidants, fragrances, and mixtures thereof.

[0028] Examples of the excipients used in the present invention include inorganic powders such as 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 (mica titanium), bismuth oxychloride, boron nitride, zirconium oxide, titanium oxide, lower titanium oxide, metal tungstates, hydroxyapatite, zeolite, ceramic powder, chloroaluminum hydroxide, aluminum chloride, aluminum sulfate, basic aluminum bromide, basic aluminum iodide, chloroaluminum hydroxide zirconium, zinc sulfate, basic aluminum zinc lactate, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, red iron oxide, black iron oxide, yellow iron oxide, ultramarine, navy blue, chromium oxide, chromium hydroxide, calamine, carbon black; monosaccharides such as glucose, fructose, galactose, mannose; disaccharides such as lactose, trehalose, maltose; starches such as starch, potato starch; sugar alcohols such as mannitol, maltitol, xylitol, erythritol; etc. One or more of these can be used. From the viewpoints of solubility, granulation property, foaming property, 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, still more preferably 30% by mass or less. And 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, still more preferably 10% by mass or more and 30% by mass or less.

[0029] Examples of the binder used in the present invention include hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, xanthan gum, carrageenan, etc., and one or more of these can be used. From the viewpoints of instant 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, still more preferably 0.5% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass or less, still more preferably 3% by mass or less. And 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, still 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 diameter at which the cumulative volume frequency calculated by volume fraction becomes 50% when calculated from the smaller particle diameter. 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 materials of the particles (A) containing the carbonate. From the viewpoints of improving productivity and storage stability, it is preferably 10 μm or more, more preferably 15 μm or more, still more preferably 20 μm or more. And from the viewpoint of good touch, it is 170 μm or less, preferably 150 μm or less, more preferably 120 μm or less, still more preferably 110 μm or less, even more preferably 100 μm or less, even more preferably 95 μm or less, even more preferably 90 μm or less. And 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, still 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. Moreover, from the viewpoints of further improving the same viewpoints and feel as above, the more preferable median diameter of the carbonate (carbonate particles (a)) as a raw material when granulating the carbonate particles (a) is, in addition to the above range, more preferably 100 μm or less, more preferably 90 μm or less, more preferably 70 μm or less, more preferably 60 μm or less, and more preferably 10 μm or more and 100 μm or less, more preferably 10 μm or more and 90 μm or less, more preferably 10 μm or more and 70 μm or less, more preferably 10 μm or more and 60 μm or less. Moreover, when using the carbonate particles (a) without granulating them, from the viewpoints of the same viewpoints as above and the balance between storage stability and feel, the more preferable median diameter of the carbonate particles (a) is, in addition to the above range, more preferably 80 μm or more, more preferably 90 μm or more, and more preferably 80 μm or more and 170 μm or less, more preferably 80 μm or more and 150 μm or less, more preferably 90 μm or more and 120 μm or less, more preferably 90 μm or more and 110 μm or less.

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

[0033] In addition, from the viewpoint of high storage stability, suppression of a rough feeling in touch, and good usability, the coefficient of variation CV value represented by the following formula (1) calculated as the value of the standard deviation σ of the particle diameter with respect to the median diameter D of the carbonate particles (a) and the organic acid particles (b) is preferably 95% or less, more preferably 90% or less, and even more preferably 85% or less. Coefficient of variation CV value (%) = [Standard deviation σ of particle diameter] / [Median diameter D] × 100 (Formula (1)) In addition, as for the other raw material components other than the carbonate and the organic acid, those having a median diameter equal to or less than the median diameter of the carbonate particles (a) and the organic acid particles (b) are preferably used, and usually, they are 170 μm or less, for example, 5 μm or more and 150 μm or less.

[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 still more preferably 120 μm or more. When the median diameter of at least one of the particles (A) and the particles (B) is within such a range, the storage stability is excellent. Further, from the viewpoint of further improving the storage stability, it is preferable that the median diameters of the particles (A) and the particles (B) are both 80 μm or more, more preferably 90 μm or more, and even more preferably 100 μm or more. Further, from the viewpoint of improving productivity, it is preferable that the median diameter of only one of the particles (A) or the particles (B) is 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 diameters of the particles (A) and the particles (B) are preferably 500 μm or less, more preferably 400 μm or less, and even more preferably 300 μm or less. Also, when using the raw material particles as they are for the particle (A), that is, when the particle (A) is the carbonate particle (a), the preferable range of the median diameter of the particle (A) is the same as the preferable range of the median diameter of the carbonate particle (a) in the case of using without granulation as described above. Also, when using the raw material particles as they are for the particle (B), that is, when the particle (B) is the organic acid particle (b), the preferable range of the median diameter of the particle (B) is the same as the preferable range of the median diameter of the organic acid particle (b) in the case of using without granulation as described above, respectively.

[0036] When the median diameter of the particle (A) is 80 μm or more, from the viewpoint of storage stability, the median diameter of the particle (A) is preferably 90 μm or more, more preferably 100 μm or more, still more preferably 110 μm or more, and even more preferably 120 μm or more. And from the viewpoint of productivity, it is preferably 500 μm or less, more preferably 400 μm or less, and still more preferably 300 μm or less. And the median diameter of the particle (A) is preferably 80 μm or more and 500 μm or less, more preferably 90 μm or more and 400 μm or less, still more preferably 100 μm or more and 300 μm or less, 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. In particular, when the particle (A) is a granulated particle, from the same viewpoints as above and from the viewpoint of further improving storage stability, it 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 particle (B) is 80 μm or more, from the viewpoint of storage stability, the median diameter of the particle (B) is preferably 90 μm or more, more preferably 100 μm or more, still more preferably 110 μm or more, and even more preferably 120 μm or more. And from the viewpoint of productivity, it is preferably 500 μm or less, more preferably 400 μm or less, and still more preferably 300 μm or less. And the median diameter of the particle (B) is preferably 80 μm or more and 500 μm or less, more preferably 90 μm or more and 400 μm or less, still more preferably 100 μm or more and 300 μm or less, 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. In particular, when the particle (B) is a granulated particle, from the same viewpoints as above and from the viewpoint of further improving storage stability, it 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] Further, in the cleaning composition of the present invention, the median diameter of the particle (A) is equal to or larger than the median diameter of the carbonate particle (a), and the median diameter of the particle (B) is equal to or larger than the median diameter of the organic acid particle (b). When the median diameter of the carbonate particle (a) is within the range of the median diameter of the particle (A), the carbonate particle (a) can be used as the particle (A) as it is. Similarly, when the median diameter of the organic acid particle (b) is within the range of the median diameter of the particle (B), the organic acid particle (b) can be used as the particle (B) as it is. Further, when the median diameter of the particle (A) is made larger than the median diameter of the carbonate particle (a), for example, the size can be adjusted by granulation described later. Similarly, when the median diameter of the particle (B) is made larger than the median diameter of the organic acid particle (b), the size can also be adjusted by granulation described later.

[0039] <Granulated particle> In the present invention, from the viewpoint of achieving high storage stability, suppressing the roughness of the feel, and providing a good usability, the median diameter of the particles (A) containing a carbonate is preferably made larger than the median diameter of the carbonate particles (a) which are the raw materials thereof, by granulating the carbonate particles (a). Also, from the viewpoint of achieving high storage stability, suppressing the roughness of the feel, and providing a good usability, the median diameter of the particles (B) containing an organic acid is preferably made larger than the median diameter of the organic acid particles (b) which are the raw materials thereof, by granulating the organic acid particles (b). The content of the granulated particles among the particles constituting the detergent composition of the present invention can be determined by observing the particles by SEM and actually measuring the number ratio. Any 20 or more particles were observed and the ratio was determined.

[0040] When the particles (A) containing a carbonate are granulated particles, the particles (A) may be granulated particles granulated from the carbonate particles (a) alone, but from the viewpoint of suppressing the amount of fine powder, it is preferably granulated with one or more selected from the group consisting of components other than the organic acid, such as surfactants, excipients, binders, and hygroscopic agents, and 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 granulated from the organic acid particles (b) alone, but from the viewpoint of suppressing the amount of fine powder, it is preferably granulated with one or more selected from the group consisting of components other than the carbonate, such as surfactants, excipients, binders, and hygroscopic agents, and particularly preferably granulated with all components other than the carbonate. Also, the particles (A) containing a carbonate or the particles (B) containing an organic acid are preferably granulated particles further containing the surfactant and the hygroscopic agent. By granulating the surfactant and the hygroscopic agent together, the amount of fine powder derived from the surfactant and the hygroscopic agent can be suppressed, and choking caused by the scattering of fine powder during the 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 viewpoints of improving storage stability and providing a good usability. Moreover, it is preferable that the particles having a median diameter of 80 μm or more in the detergent composition contain granulated particles obtained by granulating raw material particles, from the viewpoints of improving storage stability and providing a good usability. Here, the "raw material particles" refers to at least one of the carbonate particles (a) and the organic acid particles (b). The "granulated particles obtained by granulating the raw material particles" refers to the particles (A) when the carbonate particles (a) are granulated, the particles (B) when the organic acid particles (b) are granulated, and the particles (A) and the particles (B) when the carbonate particles (a) and the organic acid particles (b) are each granulated. In addition, from the viewpoints of improving storage stability and providing a good usability, it is preferable that both the particles (A) containing a carbonate and the particles (B) containing an organic acid are each granulated. However, from the viewpoint of productivity, it is preferable that only one of the particles (A) or the particles (B) is a granulated particle and the other is used as the raw material particles as they are. From the viewpoint of manufacturing efficiency, it is preferable that the particles (B) containing an organic acid are granulated particles and the particles (A) containing a carbonate use the carbonate particles (a) as the raw material particles as they are.

[0042] Furthermore, from the viewpoint of suppressing the amount of fine powder, it is preferable that at least one of the particles (A) and the particles (B) is granulated with one or more components selected from the group consisting of components other than the carbonate particles (a) and the organic acid particles (b), such as surfactants, excipients, water-soluble polymers (binders, feel modifiers), and hygroscopic agents. In particular, it is preferable that it is granulated with all components other than the carbonate particles (a) and the organic acid particles (b). Also, from the viewpoint of further improving storage stability and the viewpoint of improving instant solubility, it is preferable that both the particles (A) and the particles (B) are granulated. From the viewpoint of improving productivity, it is preferable that either one of the particles (A) or the particles (B) is granulated. Further, it is preferable that the particle (A) or the particle (B) contains a surfactant, or it is preferable that both the particle (A) and the particle (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, may contain particles (A) containing a carbonate and a surfactant and organic acid particles (b), or may contain 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, from the viewpoint of improving the usability, particularly preventing choking, the content of fine powder having a size of 10 μm or less in all the particles constituting the detergent composition is preferably 3.5% by mass or less, more preferably 3.3% by mass or less, still more preferably 3.0% by mass or less. And from the viewpoint of productivity, it is preferably 0.001% by mass or more, more preferably 0.002% by mass or more, still more preferably 0.003% by mass or more. And the content of fine powder having a size of 10 μm or less in all the 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, still more preferably 0.003% by mass or more and 3.0% by mass or less.

[0044] <Granulation method> As the granulation method of the particle (A) or the particle (B), any of a fluidized bed granulation method, a stirring granulation method, a rolling granulation method, or an extrusion granulation method can be used. Among the above, from the viewpoint of improving the solubility of the detergent composition in water, the fluidized bed granulation method is preferable. Specifically, for example, when granulating the particle (A), raw materials other than the organic acid are charged into a fluidized bed granulator, and a binder solution in which a binder is dissolved in water, ethanol or a mixture thereof is added to the uniformly mixed powder particles to perform granulation. Similarly, when granulating the particle (B), raw materials other than the carbonate are charged into a fluidized bed granulator, and a binder solution in which a binder is dissolved in water, ethanol or a mixture thereof is added to the uniformly mixed powder particles to perform granulation. From the perspective of productivity, the content (solid content) of the binder in the binder liquid is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass or less, still more preferably 5% by mass or less. And the content of the binder in the binder liquid is preferably 0.1 to 10% by mass, more preferably 0.3 to 8% by mass, still more preferably 0.5 to 5% by mass.

[0045] <Method for producing a detergent composition> The method for producing the detergent composition of the present invention uses 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 granulates at least one of the carbonate particles (a) and the organic acid particles (b) to create granulated particles having a median diameter of 80 μm or more (hereinafter, also referred to as the "granulated particle creation 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 80 μm or more, it becomes possible to improve storage stability, and it is possible to produce a detergent composition having excellent solubility, suppressed roughness in touch, and good usability. The granulated particle creation step can be performed by the granulation method described above. Granulating at least one of the carbonate particles (a) and the organic acid particles (b) includes cases where the carbonate particles (a) and the organic acid particles (b) are granulated separately, or cases where only one of the carbonate particles (a) and the organic acid particles (b) is granulated. Specifically, one of 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 respectively and used as granulated particles (A) of carbonate and granulated particles (B) of organic acid. From the perspective of further improving storage stability and improving instant solubility, it is preferable that both the carbonate particles (a) and the organic acid particles (b) are granulated separately, and from the perspective of improving productivity, it is preferable to granulate only one of the carbonate particles (a) and the organic acid particles (b). After the granule particle preparation step, when the carbonate particles (a) and the organic acid particles (b) are granulated separately, then, when the granulated particles (particle (A) and particle (B)) are combined, or when only one of the carbonate particles (a) or the organic acid particles (b) is granulated, the granulated particles and the non-granulated particles are mixed by known means to produce the detergent composition.

[0046] <Method of using the detergent composition> The detergent composition of the present invention can be suitably used, for example, for face washing, hair washing, and body washing. The detergent composition of the present invention is a foaming detergent composition that starts to foam naturally by adding water. Therefore, it foams quickly and does not require a special foaming operation that takes time and effort, so it can be used easily. As a method of using the detergent composition of the present invention, for example, take the detergent composition in the palm of the hand, add water to the detergent composition, thoroughly mix the water with the detergent composition on the palm of the hand, allow it to foam naturally, then gently foam it, and apply it to the face, hair, whole body, etc. to be washed and wash. The amount of water added to the detergent composition is such that, from the viewpoint of improving the solubility of the detergent composition and also improving the foaming property, 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, still more preferably 1 / 20 or more, and preferably 1 / 0.5 or less, more preferably 1 / 1 or less, still 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, still more preferably 20°C or higher and 45°C or lower. From the viewpoint of the foam retention property, the detergent composition is preferably applied to the skin within 5 minutes, more preferably within 3 minutes, still more preferably within 2 minutes, and even more preferably within 1 minute 30 seconds after adding water. The detergent composition of the present invention can be suitably used for face care products such as facial cleansers and body care products such as hand soap and body soap. The foaming detergent product using the detergent composition of the present invention can be enclosed in a packaging material and provided. Since the detergent composition of the present invention is less likely to cause the swelling of the packaging material due to the generation of carbon dioxide gas even when stored enclosed in the packaging material, it has excellent storage stability in the form of a product enclosed in the packaging material. The shape of the packaging material is not particularly limited as long as it has a structure capable of enclosing the detergent composition, and examples include a bag shape, a bottle shape, and the like. Among these, a bag-shaped packaging material is preferred. The material constituting the packaging material is also not particularly limited as long as it can enclose the detergent composition. For example, in the case of a bag-shaped packaging material, a resin film, a laminated film in which an inorganic thin film made of a metal or a metal oxide is laminated on the resin film, or the like can be used.

[0047] Hereinafter, regarding the above-described embodiments, the present invention further discloses the following. <1> A detergent composition containing a carbonate, an organic acid, and a surfactant, wherein the detergent composition contains particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) do not contain an organic acid, the particles (B) are particles that do not contain a carbonate, the median diameter of the carbonate particles (a) which are the raw materials of the particles (A), and the median diameter of the organic acid particles (b) which are the raw materials of 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 the median diameter of the carbonate 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), Detergent composition. <2> The detergent composition according to <1>, wherein at least one of the particles (A) and the particles (B) contains granulated particles obtained by granulating raw material particles. <3> Furthermore, the detergent composition according to <1> or <2>, which contains a moisture absorbent. <4> The cleaning composition according to any one of <1> to <3>, wherein the organic acid contains one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid. <5> The cleaning composition according to any one of <1> to <4>, wherein the carbonate contains one or more selected from the group consisting of sodium carbonate and sodium hydrogen carbonate. <6> The cleaning composition according to any one of <3> to <5>, wherein the moisture absorbent is magnesium oxide. <7> The cleaning composition according to any one of <3> to <6>, wherein the particle (A) or the particle (B) is a granulated particle further containing the surfactant and the moisture absorbent. <8> The cleaning composition according to any one of <1> to <7>, wherein the content of the carbonate is 10% by mass or more and 60% by mass or less. <9> The cleaning composition according to any one of <1> to <8>, wherein the content of the organic acid is 5% by mass or more and 60% by mass or less. <10> The cleaning composition according to any one of <1> to <9>, wherein the content of the surfactant is 10% by mass or more and 50% by mass or less. <11> The cleaning composition according to any one of <1> to <10>, wherein the mass ratio [(carbonate + organic acid) / surfactant] of the total amount of the carbonate and the organic acid to the surfactant is 0.1 or more and 20 or less. <12> The cleaning composition according to any one of <1> to <11>, wherein the mass ratio [organic acid / carbonate] of the organic acid to the carbonate is 0.05 or more and 10 or less. <13> The cleaning composition according to any one of <1> to <12>, wherein the total amount of the carbonate and the organic acid is 35% by mass or more and 70% by mass or less. <14> The median diameter of the carbonate particles (a) which are the raw material of the particles (A), and the median diameter of the organic acid particles (b) which are the raw material of 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. The detergent composition according to any one of <1> to <13>. <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. The detergent composition according to any one of <1> to <14>. <16> The content of the surfactant is 15% by mass or more and 45% by mass or less, and the mass ratio [(carbonate + organic acid) / surfactant] of the total amount of the carbonate and the organic acid to the surfactant is 1.0 or more and 10 or less. The detergent composition according to any one of <1> to <15>. <17> The particles (A) contain a surfactant. The cleaning composition according to any one of <1> to <16>. <18> The particles (B) contain a surfactant. The cleaning composition according to any one of <1> to <16>. <19> Both the particles (A) and the particles (B) contain a surfactant. The cleaning composition according to any one of <1> to <16>. <20> A method for producing the detergent composition according to any one of <1> to <19>, 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 including a step of 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. A method for producing a detergent 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. The method for producing a detergent composition according to <20>.

Example

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

[0049] [Method for measuring median diameter and CV value] Regarding the particle diameters of carbonate particles (a), organic acid particles (b), particles (A), and particles (B), 3 g of each was used, and the median diameter and CV value were measured with a Camsizer XT (particle size measuring device, manufactured by RETSCH Co., Ltd.). For particles (A) and particles (B), the measurement was carried out only after granulation when they were in the form of granulated products.

[0050] [Method for measuring the content (number ratio) of granulated particles in particles] The powder or granular detergent composition was sieved with a sieve having an opening of 100 μm, and the particles on the sieve were collected with an extremely small spatula. The collected particles were spread on a 5 mm × 5 mm carbon tape and observed with a Hitachi desktop microscope Miniscope TM3030 (manufactured by Hitachi High-Tech Corporation). 20 particles were observed, and the content (number ratio) was calculated with the agglomerates regarded as granulated particles.

[0051] [Preparation of mixed surfactant] 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] A detergent composition was obtained according to the formulation shown in Table 1. 67.4 g of citric acid (citric anhydride 60 manufactured by Iwata Chemical Industry Co., Ltd.), 118.3 g of the mixed surfactant, 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), and the air volume was 0.3 m 3While granulating at a rate of 5 g / min, 314 g of a 1.6% carrageenan aqueous solution (solid content: 5.0 g) was added under the conditions of / min and an intake air temperature of 80°C to obtain granules with a size of 172 μm. The obtained granules and 203 g of sodium hydrogen carbonate (hereinafter also referred to as baking soda, manufactured by AGC Inc.) were put into a transparent vinyl bag and manually mixed until uniform in the bag to prepare a cleaning agent composition. Using the obtained cleaning agent composition, each evaluation was conducted according to the method shown below. The results are shown in Table 1.

[0053] [Examples 2, 3, 5 to 8] A cleaning agent composition was obtained in the same manner as in Example 1, except that the formulation shown in Table 1 was followed. Using the obtained cleaning agent composition, each evaluation was conducted according to the method shown below. The results are shown in Table 1.

[0054] [Example 4] According to the formulation shown in Table 1, sodium hydrogen carbonate was granulated. 139.9 g of sodium hydrogen carbonate (manufactured by AGC Inc.), 81.5 g of a mixed surfactant, 17.3 g of magnesium oxide (manufactured by Kyowa Chemical Industry Co., Ltd.), and 57.8 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), and while granulating at the same conditions as in Example 1, 216 g of a 1.6% carrageenan aqueous solution (solid content: 3.5 g) was added at a rate of 5 g / min to obtain granules with a size of 127 μm. The obtained granules and 46.6 g of citric acid were manually mixed in a transparent vinyl bag until uniform to prepare a cleaning agent composition. Using the obtained cleaning agent composition, each evaluation was conducted according to the method shown below. The results are shown in Table 1.

[0055] [Comparative Examples 1 to 3] A cleaning agent composition was obtained according to the formulation shown in Table 2. In Comparative Examples 1 to 3, without granulating, all the components were put into a bag and manually mixed in the bag to obtain a cleaning agent composition. Using the obtained cleaning agent composition, each evaluation was conducted according to the method shown below. The results are shown in Table 2.

[0056] [Storage Stability] 3.9 g of each detergent composition was enclosed in an aluminum package measuring 80 mm × 50 mm × 18 mm under conditions of 50°C and 50% RH, and the expansion amount of the aluminum package before and after storage at 50°C for 4 weeks was measured. Specifically, a water tank filled with water at 25°C was placed on a scale 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 before and after submerging the aluminum package in water was converted to volume using the density of water as 1.0 g / ml based on Archimedes' principle, and this was taken as the volume of the aluminum package before storage. Then, after 4 weeks of storage, the same measurement was performed to obtain the volume of the aluminum package after storage, and the expansion amount of the aluminum package after storage was determined from the difference in the volume of the aluminum package before and after storage. A smaller expansion amount indicates better storage stability.

[0057] [Touch Feeling] 1 g of the detergent composition was placed on the palm, 10 g of water at 42°C was dripped onto the detergent composition, and the water was thoroughly mixed with the detergent composition on the palm and allowed to foam naturally. After about 10 seconds had elapsed since the water was dripped (when the water had been dripped), the other palm was brought together to whip the foam. Then, while continuing the foaming operation, the touch feeling when whipping the foam within 3 minutes after the water was dripped was evaluated by 3 professional panels according to the following criteria and determined by consensus among the professional panels. 1: No roughness is felt from the beginning. 2: Roughness is felt at first, but it disappears at the initial stage of foaming. 3: Roughness is felt at first, but it disappears during foaming. 4: Roughness is felt, but it disappears after foaming. 5: Roughness is felt and does not disappear even after foaming. (The above "initial stage of foaming" means within 1 minute after dripping water onto the detergent composition, "during foaming" means more than 1 minute and within 2 minutes, and "after foaming" means more than 2 minutes and within 3 minutes.)

[0058]

Table 1

[0059]

Table 2

[0060] *1 The "organic acid granulation" described in the column of "granulation state" in Table 1 and Table 2 refers to the state in which an organic acid and all components other than carbonate (sodium bicarbonate) (surfactant, excipient, binder, and humectant) are granulated, and the granulated particles correspond to the particles (B) containing the organic acid of the present invention. In the case of organic acid granulation, the carbonate (sodium bicarbonate) was used as raw material particles without granulation (corresponding to the particles (A) containing carbonate). The "carbonate granulation" refers to the state in which carbonate and all components other than organic acid (citric acid) (surfactant, excipient, binder, and humectant) are granulated, and the granulated particles correspond to the particles (A) containing carbonate of the present invention. In the case of carbonate granulation, the organic acid (citric acid) was used as raw material particles without granulation (corresponding to the particles (B) containing organic acid). "Ungranulated" refers to the state in which all powder components are used without granulation. *2 Carrageenan was dissolved in purified water and used as a 1.6% aqueous carrageenan solution. However, since the purified water evaporates in the manufacturing process, the carrageenan content in Table 1 and Table 2 indicates the solid content. *3 The particle size in Table 1 and Table 2 indicates the median diameter.

[0061] From Table 1 and Table 2, it can be seen that the detergent compositions of this example are excellent in storage stability and feel. In addition, all of the detergent compositions of this example had good foaming properties, foam breakage, and foam retention.

Industrial Applicability

[0062] According to the present invention, it is possible to provide a detergent composition having high storage stability, suppressing the roughness of the feel, and having a good usability. The detergent composition can be used for face care products such as facial cleansers and body care products such as hand soaps and body soaps.

Claims

1. A cleaning composition comprising a carbonate, an organic acid and a surfactant, The cleaning agent 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) which are the raw material of the particles (A) and the median diameter of the organic acid particles (b) which are the raw material of 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. 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. 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. 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 steps of: 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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