Carbonic acid foaming composition and detergent composition

Abstract

A carbonic acid foaming composition containing a carbonate and an organic acid, said composition containing particles (A) that contain the carbonate and particles (B) that contain 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 of the particles (A) is 170 μm or less; the median diameter of organic acid particles (b) which are the raw materials of the particles (B) is 500 μm or less; the median diameter of at least one from among the particles (A) and the particles (B) is 80 μm or more; the median diameter of the particles (A) is greater than or equal to the median diameter of the carbonate particles (a); and the medium diameter of the particles (B) is greater than or equal to the median diameter of the organic acid particles (b).

Description

Carbonated foaming composition, cleaning composition

[0001] The present invention relates to a carbonated foaming composition and a cleaning composition.

[0002] In recent years, foam-type shampoos, facial cleansers, and body soaps have been attracting attention due to their ease of use. In this context, a foaming cosmetic composition that generates fine carbon dioxide bubbles has been reported, taking advantage of the property that a mixture of a carbonate and an organic acid generates carbon dioxide gas when a small amount of water is added (JP 1-290615 A: Patent Document 1). 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 has the drawback that, if even a trace amount of water is present in the mixture of a carbonate and an organic acid, carbon dioxide gas is generated during storage, and water is generated as a by-product of the reaction, causing a chain reaction that results in swelling of the packaging material and a decrease in foaming ability during use.

[0003] In response to this problem, techniques for improving storage stability have been reported. For example, Japanese Patent Laid-Open No. 2009-62319 (Patent Document 2) discloses effervescent granules containing an oily component and having a particle size of 150 μm to 1500 μm, thereby improving storage stability. Furthermore, Japanese Patent Laid-Open No. 2009-155213 (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 having 50% or more particles with a particle size of 180 μm or more, (B) 40 to 70% by mass of an organic acid having 50% or more particles with a particle size of 180 μm or more, and (C) 0.01 to 10% by mass of a poorly water-soluble metal oxide.

[0004] The present invention relates to the following items [1] to [4]: ​​[1] A carbonated foamable composition containing a carbonate and an organic acid, the carbonated foamable composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) containing no organic acid and the particles (B) containing no carbonate, the carbonate particles (a) used as a raw material for the particles (A) have a median diameter of 170 μm or less and the organic acid particles (b) used as a raw material for the particles (B) have a median diameter of 500 μm or less, at least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, and 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). [2] A method for producing the carbonated foamable composition according to [1], comprising the steps of: using carbonate particles (a) having a median diameter of 170 μm or less and organic acid particles (b) having a median diameter of 500 μm or less as raw materials; 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. [3] A cleaning composition containing a carbonate, an organic acid, and a surfactant, the cleaning composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) containing no organic acid, and the particles (B) containing no carbonate, the median diameter of carbonate particles (a) used as a raw material for particles (A) and the median diameter of organic acid particles (b) used as a raw material for particles (B) are 170 μm or less, the median diameter of at least one of particles (A) and particles (B) is 80 μm or more, the median diameter of particles (A) is equal to or greater than the median diameter of carbonate particles (a), and the median diameter of particles (B) is equal to or greater than the median diameter of organic acid particles (b).[4] A method for producing the cleaning composition according to [3], comprising the steps 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 produce granulated particles having a median diameter of 80 μm or more.

[0005] The technology described in JP 2009-62319 A (Patent Document 2) uses a compression granulation method, which reduces the immediate solubility of the granules. Therefore, when this technology is used to produce a carbonated foaming composition used for lathering shampoo or the like by hand, it has been found that undissolved components cause roughness, resulting in a poor feel during use and a poor feel. Furthermore, JP 2009-155213 A (Patent Document 3) is a technology related to bath additives. When the bath additive composition dissolves on the surface of the bathwater, the carbon dioxide gas does not dissolve sufficiently in the bathwater and dissipates. Therefore, in order to dissolve the bath additive composition in the bathwater, the bath additive composition must be allowed to settle in the bathwater and remain there for a certain period of time. Therefore, it is assumed that raw material particles having a certain particle size are used as the particles constituting the bath additive composition. In contrast, carbonated foaming compositions used for lathering by hand require instant solubility, meaning that they dissolve instantly in a small amount of liquid in a short time. Therefore, when large particles are used as carbonated foaming compositions, they have poor solubility, resulting in the same roughness problem as described above. Unlike bath additives, carbonated foaming compositions are applied to hair or the body and come into direct contact with the skin, so they require a delicate feel. Therefore, the present invention relates to providing carbonated foaming compositions and cleaning compositions that have high storage stability, suppressed roughness to the touch, and a good feel when used.

[0006] As a result of further investigations, the inventors have found that the above-mentioned problems can be solved by a carbonated foamable composition containing a carbonate and an organic acid, wherein the carbonate and the organic acid are contained in the form of independent particles, namely, carbonate-containing particles (A) (hereinafter also referred to as simply "particles (A)") and organic acid-containing particles (B) (hereinafter also referred to as simply "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 not more than a predetermined value, at least one of particles (A) and particles (B) has a median diameter not less than a predetermined value, and the median diameters of particles (A) and particles (B) are not less than the median diameters of the respective raw material particles.

[0007] Furthermore, as a result of further investigations, the present inventors have found that the above-mentioned problems can be solved by a cleaning 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 simply "particles (A)") and organic acid-containing particles (B) (hereinafter also referred to as simply "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.

[0008] A first embodiment of the present invention relates to the following: A carbonated foamable composition containing a carbonate and an organic acid, the carbonated foamable composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) containing no organic acid and the particles (B) containing no carbonate, the carbonate particles (a) used as a raw material for the particles (A) have a median diameter of 170 μm or less and the organic acid particles (b) used as a raw material for the particles (B) have a median diameter of 500 μm or less, at least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, and 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).

[0009] A second embodiment of the present invention relates to the following: A cleaning composition containing a carbonate, an organic acid, and a surfactant, the cleaning composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) containing no organic acid, and the particles (B) containing no carbonate, the median diameter of carbonate particles (a) used as a raw material for particles (A) and the median diameter of organic acid particles (b) used as a raw material for particles (B) are 170 μm or less, the median diameter of at least one of particles (A) and particles (B) is 80 μm or more, the median diameter of particles (A) is equal to or greater than the median diameter of carbonate particles (a), and the median diameter of particles (B) is equal to or greater than the median diameter of organic acid particles (b).

[0010] According to the present invention, it is possible to provide a carbonated foaming composition and a detergent composition which have high storage stability, are suppressed in roughness to the touch, and have a good feel when used.

[0011] [First embodiment: Carbonated foamable composition] A carbonated foamable composition according to a first embodiment of the present invention is a carbonated foamable composition containing a carbonate and an organic acid, wherein the carbonated foamable composition contains 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, wherein the carbonate particles (a) that are the raw material for the particles (A) have a median diameter of 170 μm or less and the organic acid particles (b) that are the raw material for the particles (B) have a median diameter of 500 μm or less, wherein at least one of the particles (A) and the particles (B) has a median diameter of 80 μm or more, and wherein 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). The carbonated foamable composition according to the first embodiment of the present invention is in powder or granular form and is used to, for example, form surfactant-containing compositions, such as shampoos and conditioners, into a foam formulation. Therefore, the carbonated foamable composition according to the first embodiment of the present invention is combined with a surfactant-containing composition and applied to the surfaces of the human body, including skin and hair. Therefore, a good feel when lathered, without roughness, is required. Furthermore, rapid dissolution within a short time is required, so the particles constituting the carbonated foamable composition are desirably small in particle size. However, it was found that when the particle size of a carbonated foamable composition is small, the addition of a moisture absorbent is insufficient, and carbon dioxide gas generation in the packaging material cannot be suppressed, resulting in poor storage stability. Further investigations revealed that in order to suppress carbon dioxide gas generation during storage, the particle size of the carbonate salt and organic acid must be increased to a specific value or greater. The inventors conducted extensive research to resolve these conflicting needs and found that both immediate solubility and storage stability can be achieved by adjusting the particle size of the raw material particles and the particle size of the resulting carbonated foamable composition to specific ranges.That is, in the carbonated foamable composition according to the first embodiment of the present invention, the median diameters of the carbonate particles (a) and the organic acid particles (b) are a predetermined value or less, and 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, and the median diameter of the particles (A) is equal to or greater than the median diameter of the carbonate particles (a) from which the composition is made, and the median diameter of the particles (B) is equal to or greater than the median diameter of the organic acid particles (b) from which the composition is made, thereby improving storage stability and reducing roughness to the touch during use, resulting in a good usability. Furthermore, the carbonate and the organic acid are contained in the form of independent particles, i.e., the carbonate-containing particles (A) and the organic acid-containing particles (B), respectively, thereby further improving storage stability and foamability.

[0012] The carbonated foaming composition according to the first embodiment of the present invention may contain a surfactant within a range that does not inhibit the efficacy of the surfactant-containing composition used in combination. The surfactant content may be less than 10% by mass, 7% by mass or less, or 5% by mass or less, and may be 1% by mass or more, 2% by mass or more, or 3% by mass or more. The surfactant-containing composition will be described in detail in the section on how to use the powdered or granular carbonated composition.

[0013] The surfactant used in the carbonated foaming composition according to the first embodiment of the present invention can be the same as that used in the cleaning composition according to the second embodiment of the present invention, which will be described later.

[0014] <Carbonate, Carbonate-Containing Particles (A)> The carbonated foamable composition according to the first embodiment of the present invention contains a carbonate. The carbonate is contained in the carbonated foamable composition according to the first embodiment of the present invention in the form of carbonate-containing particles (A). As the carbonate-containing particles (A) used in the carbonated foamable composition according to the first embodiment of the present invention, the raw material carbonate particles (a) may be used as is, or granulated particles obtained by granulating the carbonate particles (a), or a mixture thereof may be used. The particles (A) do not contain an organic acid. Here, "does not contain" means that the particles (A) are substantially free of an organic acid, and the amount of the organic acid in the particles (A) is preferably less than 1% by mass, and more preferably 0% by mass.

[0015] Examples of carbonates used in the present invention include dialkali metal carbonates such as sodium carbonate and potassium carbonate; and alkali metal hydrogen carbonates such as sodium hydrogen carbonate and potassium hydrogen carbonate; and one or more of these can be used. Among these, from the viewpoint of improving foaming properties, the carbonate is preferably sodium carbonate (Na ２ CO ３ ), and sodium bicarbonate (NaHCO ３ From the viewpoint of improving foaming properties, the content of the one or more selected from the group consisting of sodium carbonate and sodium hydrogen carbonate in the carbonate salt 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.

[0016] From the viewpoint of improving foaming property, the content of carbonate in the carbonated foamable composition is preferably 15% by mass or more, more preferably 25% by mass or more, even more preferably 30% by mass or more, and even more preferably 35% by mass or more. From the viewpoint of improving foam retention, it is preferably 65% ​​by mass or less, more preferably 60% by mass or less, and even more preferably 55% by mass or less. The content of carbonate in the carbonated foamable composition is preferably 15% by mass or more and 65% by mass or less, more preferably 25% by mass or more and 60% by mass or less, even more preferably 30% by mass or more and 55% by mass or less, and even more preferably 35% by mass or more and 55% by mass or less.

[0017] <Organic Acid, Particles (B) Containing Organic Acid> The carbonated foamable composition according to the first embodiment of the present invention contains an organic acid. The organic acid is contained in the carbonated foamable composition according to the first embodiment of the present invention in the form of particles (B) containing an organic acid. As the particles (B) containing an organic acid used in the carbonated foamable composition according to the first embodiment of the present invention, the raw material organic acid particles (b) may be used as is, or granulated particles obtained by granulating the organic acid particles (b), or a mixture thereof may be used. The particles (B) do not contain carbonate. Here, "does not contain" means that the particles (B) are substantially free of carbonate, and the amount of carbonate in the particles (B) is preferably less than 1% by mass, and more preferably 0% by mass.

[0018] 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.

[0019] From the viewpoint of improving foaming properties, the content of organic acid in the carbonated foamable composition is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, and even more preferably 20% by mass or more. From the viewpoint of improving foam retention, it is preferably 60% by mass or less, more preferably 50% by mass or less, even 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 organic acid in the carbonated foamable composition is preferably 5% by mass or more and 60% by mass or less, more preferably 10% by mass or more and 50% by mass or less, even more preferably 10% 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.

[0020] In the carbonated foamable composition, the mass ratio of the organic acid to the carbonate [organic acid / carbonate] is, from the viewpoint of foaming property, 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.

[0021] From the viewpoint of foaming ability, the total amount of carbonate and organic acid in the carbonated foamable composition is preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 65% ​​by mass or more, and from the viewpoint of improving foam retention, it is preferably 90% by mass or less, more preferably 85% by mass or less, and even more preferably 80% by mass or less. The total amount of carbonate and organic acid in the carbonated foamable composition is preferably 50% by mass or more and 90% by mass or less, more preferably 60% by mass or more and 85% by mass or less, and even more preferably 65% ​​by mass or more and 80% by mass or less.

[0022] <Moisture absorbent> The carbonated foamable composition according to the first embodiment 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, calcium oxide, and zinc oxide. Among these, magnesium oxide is preferred from the viewpoints of storage stability and foaming properties.

[0023] From the viewpoint of improving storage stability, the content of the moisture absorbent in the carbonated foamable 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 property, it is preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less. The content of the moisture absorbent in the carbonated foamable composition is preferably 0.01% by mass or more and 15% by mass or less, more preferably 0.1% by mass or more and 12% by mass or less, even more preferably 1% by mass or more and 12% by mass or less, still more preferably 2% by mass or more and 10% by mass or less, and even more preferably 4% by mass or more and 10% by mass or less.

[0024] <Other Components> The carbonated foamable composition according to the first embodiment of the present invention may contain other components commonly used in carbonated foamable compositions, as long as the components do not impair the objectives of the present invention. Examples of such other components include excipients, water-soluble polymers, thickeners, natural pigments, humectants, anti-inflammatory agents, disinfectants, antiperspirants, antioxidants, fragrances, and mixtures thereof. From the viewpoint of foaming properties, the carbonated foamable composition according to the first embodiment of the present invention preferably does not substantially contain oily components such as fragrances. The content of oily components in the carbonated foamable composition is preferably less than 2% by mass, more preferably 1.5% by mass or less, even more preferably less than 1.0% by mass, even more preferably 0.5% by mass or less, even more preferably 0.1% by mass or less, and even more preferably 0% by mass.

[0025] 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 excipients include inorganic powders such as 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. From the viewpoints of solubility, granulation ability, effervescence, and storage stability, the content of the excipient in the carbonated foaming 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 excipients in the carbonated foaming 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.

[0026] The water-soluble polymer used in the present invention is preferably a polysaccharide-based polymer from the viewpoint of improving the feel during use, and such water-soluble polymer can be used as a feel modifier and a binder during granulation, as described below. Examples of water-soluble polymers used in the present invention include semi-synthetic water-soluble polymers such as hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, cationized hydroxyethyl cellulose, cationized carboxymethyl cellulose, cationized xanthan gum, cationized carrageenan, and cationized guar gum, and natural water-soluble polymers such as xanthan gum, carrageenan, and guar gum. One or more of these may be used. Among the above, from the viewpoint of stabilizing the foam generated upon contact with a surfactant-containing composition and improving the feel during use when added to a hair cosmetic, the feel modifier is preferably a water-soluble cationized polysaccharide, more preferably one or more selected from the group consisting of cationized hydroxyethyl cellulose, cationized carboxymethyl cellulose, cationized xanthan gum, cationized carrageenan, and cationized guar gum, and even more preferably one or more selected from the group consisting of cationized hydroxyethyl cellulose, cationized carboxymethyl cellulose, and cationized guar gum. From the viewpoints of stabilizing the foam generated when the carbonated foaming composition is added to a surfactant-containing composition and improving the feel when added to a hair cosmetic, the content of the water-soluble polymer in the carbonated foaming composition is preferably 0.1% by mass or more, more preferably 1.0% by mass or more, even more preferably 2.5% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, and still more preferably 5.0% by mass or less. The content of the water-soluble polymer in the carbonated foaming composition is preferably 0.1% by mass or more and 30% by mass or less, more preferably 1.0% by mass or more and 20% by mass or less, even more preferably 1.0% by mass or more and 10% by mass or less, and still more preferably 2.5% by mass or more and 5.0% by mass or less.From the viewpoint of stabilizing the foam generated upon contact with a surfactant-containing composition and improving the feel when added to a surfactant-containing composition such as a hair cosmetic, the content of the feel modifier in the carbonated foamable composition is preferably at least 0.01% by mass, more preferably at least 0.3% by mass, even more preferably at least 0.8% by mass, still more preferably at least 1.3% by mass, even more preferably at least 2.3% by mass, and preferably at most 29.8% by mass, more preferably at most 25.3% by mass, even more preferably at most 19.8% by mass, still more preferably at most 9.8% by mass, and even more preferably at most 4.8% by mass. The content of the feel modifier in the carbonated foamable composition is preferably at least 0.01% by mass and at most 29.8% by mass, more preferably at least 0.3% by mass and at most 25.3% by mass, even more preferably at least 0.8% by mass and at most 19.8% by mass, still more preferably at most 1.3% by mass and at most 9.8% by mass, and even more preferably at most 2.3% by mass and at most 4.8% by mass.

[0027] <Particle diameters of carbonate particles (a), organic acid particles (b), particles (A), and particles (B)> In the present invention, the median diameter (D50) refers to the particle diameter at which the cumulative volume frequency calculated as a volume fraction is 50% from the smallest particle diameter. Specifically, the median diameter can be measured by the method described in the Examples.

[0028] 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 viewpoints of improving foamability and 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, 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 10 μm or more and 150 μm or less, even more preferably 15 μm or more and 120 μm or less, still more preferably 20 μm or more and 110 μm or less, still more preferably 20 μm or more and 100 μm or less, still more preferably 20 μm or more and 95 μm or less, and still more preferably 20 μm or more and 90 μm or less. Furthermore, in addition to the above-mentioned viewpoints, from the viewpoint of further improving foamability and texture, the median diameter of the carbonate (carbonate particles (a)) used as a raw material when granulating the carbonate particles (a) is 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.

[0029] 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 viewpoint 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 foamability and feel, it is 500 μm or less, preferably 350 μm or less, more preferably 170 μm or less, even more preferably 150 μm or less, still more preferably 120 μm or less, still more preferably 110 μm or less, still more preferably 100 μm or less, still more preferably 95 μm or less, and still more preferably 90 μm or less. The median diameter of the organic acid particles (b) is 500 μm or less, preferably 10 μm or more and 350 μm or less, more preferably 10 μm or more and 170 μm or less, even more preferably 10 μm or more and 150 μm or less, still more preferably 15 μm or more and 120 μm or less, still more preferably 20 μm or more and 110 μm or less, still more preferably 20 μm or more and 100 μm or less, still more preferably 20 μm or more and 95 μm or less, and still more preferably 20 μm or more and 90 μm or less. Further, a more preferred 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-mentioned ranges, even more preferably 70 μm or less, even more preferably 60 μm or less, and even more preferably 10 μm or more and 110 μm or less, from the viewpoints of further improving foamability and feel, in addition to the above-mentioned viewpoints. 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 350 μm or less, even more preferably 80 μm or more and 170 μm or less, even more preferably 90 μm or more and 150 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.

[0030] From the viewpoints of achieving high storage stability, suppressed roughness to the touch, and a good usability, the particle diameters of 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, as 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 diameters σ] / [Median diameter D] × 100 (Formula (1)) Note that raw material components other than the carbonate and the organic acid preferably have a median diameter equal to or less than the median diameters of the carbonate particles (a) and the organic acid particles (b), and are typically 170 μm or less, for example, 5 μm to 150 μm.

[0031] In the carbonated foamable composition according to the first embodiment 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 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.

[0032] From the viewpoint of productivity, the median diameters of the particles (A) and the particles (B) are preferably 500 μm or less, more preferably 450 μm or less, even more preferably 400 μm or less, and even more preferably 350 μm or less. When raw material particles are used 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. When raw material particles are used 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.

[0033] 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, even more preferably 350 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 350 μm or less, even more preferably 110 μm or more and 350 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 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, even more preferably 110 μm or more and 350 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.

[0034] 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, even more preferably 350 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 350 μm or less, even more preferably 110 μm or more and 350 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 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, even more preferably 110 μm or more and 350 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.

[0035] In the carbonated foamable composition according to the first embodiment of the present invention, 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). 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 particles (A) without modification. 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 particles (B) without modification. When the median diameter of the particles (A) is made larger than the median diameter 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 made larger than the median diameter of the organic acid particles (b), the size can be adjusted, for example, by granulation, as described below.

[0036] <Granulated Particles> In the first embodiment of the present invention, from the viewpoints of high storage stability, suppressed roughness to the touch, and a good feel when used, the median diameter of the carbonate-containing particles (A) is preferably made larger than the median diameter of the carbonate particles (a) that are its raw material by granulating the carbonate particles (a). Furthermore, from the viewpoints of high storage stability, suppressed roughness to the touch, and a good feel when used, the median diameter of the organic acid-containing particles (B) is preferably made larger than the median diameter of the organic acid particles (b) that are its raw material by granulating the organic acid particles (b).

[0037] When the carbonate-containing particles (A) are granulated particles, the particles (A) may be granulated particles obtained by granulating carbonate particles (a) alone, but from the viewpoint of suppressing the amount of fine powder, it is preferable that the particles (A) be granulated with one or more components other than the organic acid, such as excipients, water-soluble polymers (binders, feel-adjusting agents), and moisture absorbents, and it is particularly preferable that the particles (A) be granulated with all components other than the organic acid. When the organic acid-containing particles (B) are granulated particles, the particles (B) may be granulated particles obtained by granulating organic acid particles (b) alone, but from the viewpoint of suppressing the amount of fine powder, it is preferable that the particles (B) be granulated with one or more components other than the carbonate, such as excipients, water-soluble polymers (binders, feel-adjusting agents), and moisture absorbents, and it is particularly preferable that the particles (B) be 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 moisture absorbent. By granulating the carbon dioxide foam composition together with a moisture absorbent, the amount of fine powder derived from the moisture absorbent can be reduced, and choking caused by scattering of the fine powder when the carbon dioxide foam composition is used can be prevented.

[0038] It is preferable that at least one of the carbonate-containing particles (A) and the organic acid-containing particles (B) comprises granulated particles obtained by granulating raw material particles, from the viewpoint of improving storage stability and improving the feel when used. Furthermore, it is preferable that the particles having a median diameter of 80 μm or more in the carbonated foamable composition comprise granulated particles obtained by granulating raw material particles, from the viewpoint 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 the carbonate-containing particles (A) are used as raw material particles, that is, carbonate particles (a).

[0039] 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 components other than the carbonate particles (a) and the organic acid particles (b), such as one or more selected from the group consisting of excipients, water-soluble polymers (binders, texture modifiers), and moisture absorbents, and it is particularly preferable that it is granulated with all components other than the carbonate particles (a) and the organic acid particles (b). Furthermore, from the viewpoint of further improving storage stability and instant solubility, it is preferable that both the particles (A) and the particles (B) are granulated, and from the viewpoint of improving productivity, it is preferable that either the particles (A) or the particles (B) is granulated.

[0040] It is also preferable that the particles (A) or the particles (B) contain an excipient, or that both the particles (A) and the particles (B) contain an excipient. Specifically, the carbonated foamable composition according to the first embodiment of the present invention may contain carbonate particles (a) and particles (B) containing an organic acid and an excipient, particles (A) containing a carbonate and an excipient and organic acid particles (b), or particles (A) containing a carbonate and an excipient and particles (B) containing an organic acid and an excipient.

[0041] In the carbonated foamable composition according to the first embodiment of the present invention, the content of fine powder having a size of 10 μm or less of all particles constituting the carbonated foamable 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 carbonated foamable 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.

[0042] <Granulation Method> As a method for granulating particles (A) or particles (B), any of fluidized bed granulation, stirring granulation, tumbling granulation, and extrusion granulation can be used. Among the above, fluidized bed granulation is preferred from the viewpoint of improving the solubility of the carbonated foamable composition in liquid (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 obtained by dissolving a binder in water, ethanol, or a mixture thereof is added to the uniformly mixed powder and granules, thereby achieving granulation. Similarly, when granulating particles (B), raw materials other than the carbonate are charged into a fluidized bed granulator, and a binder liquid obtained by dissolving a binder in water, ethanol, or a mixture thereof is added to the uniformly mixed powder and granules, thereby achieving granulation. The binder used in the granulation process of the present invention is preferably selected from the water-soluble polymers described above. From the viewpoints of immediate solubility and productivity of the carbonated foamable composition, one or more types selected from hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, xanthan gum, carrageenan, guar gum, etc. may be used. Preferably, one or more types selected from hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, xanthan gum, and carrageenan are used. Furthermore, from the viewpoint of productivity, the binder content (solids 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, and 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, and even more preferably 0.5 to 5% by mass. Furthermore, from the viewpoint of immediate solubility, the content (solid content) of the binder in the carbonated foamable composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and is preferably 10% by mass or less, more preferably 5% by mass or less, even more preferably 3% by mass or less. The content of the binder in the carbonated foamable composition is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass, even more preferably 0.1 to 3% by mass.

[0043] <Method for Producing Carbonated Foamable Composition> A method for producing a carbonated foamable composition according to a first embodiment of the present invention 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 500 μm or less as raw materials, 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) having a median diameter of 170 μm or less and organic acid particles (b) having a median diameter of 500 μm or less as raw material particles and granulating at least one of them to 80 μm or more, it is possible to produce a carbonated foamable composition that has improved storage stability, excellent solubility, reduced roughness to the touch, and a pleasant feel when used. The granulated particle production step can be performed using 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, respectively, to form granulated particles of carbonate (A) and granulated particles of organic acid (B). From the viewpoints of further improving storage stability and instantaneous solubility, it is preferable that the carbonate particles (a) and the organic acid particles (b) are granulated separately. From the viewpoint of improving productivity, it is preferable that only one of the carbonate particles (a) and the organic acid particles (b) is granulated. 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)) can be mixed together thereafter; if only either the carbonate particles (a) or the organic acid particles (b) are granulated, the granulated particles can be mixed with the non-granulated particles by known means to produce a carbonated foamable composition.

[0044] <Method of Using the Carbonated Foaming Composition> The carbonated foaming composition according to the first embodiment of the present invention is used to bring the composition into contact with a surfactant-containing composition during use to form the surfactant-containing composition into a foamy formulation. More specifically, when the carbonated foaming composition according to the first embodiment of the present invention is brought into contact with the surfactant-containing composition during use, the liquid component (water) contained in the surfactant-containing composition, or a liquid component (water) added as needed, causes a reaction between the carbonate salt and the organic acid contained in the carbonated foaming composition, generating carbon dioxide gas, thereby forming the surfactant-containing composition into a foamy formulation. The carbonated foaming composition according to the first embodiment of the present invention reacts with water to naturally initiate foaming, thereby enabling the surfactant-containing composition to foam quickly and eliminating the need for a time-consuming and labor-intensive special foaming process, making it easy to use.

[0045] The method for using the carbonated foamable composition according to the first embodiment of the present invention is also a foaming method and a cleansing method. That is, it is a method for foaming a surfactant composition, in which the carbonated foamable composition according to the first embodiment of the present invention is brought into contact with a surfactant-containing composition to form the surfactant-containing composition into a foamy formulation. It is also a method for cleansing the body, in which the carbonated foamable composition according to the first embodiment of the present invention is brought into contact with a surfactant-containing composition to form the surfactant-containing composition into a foamy formulation, and the foamy surfactant composition is applied to the surface of the human body for cleansing. It is also a method for cleansing hair, in which the carbonated foamable composition according to the first embodiment of the present invention is brought into contact with a surfactant-containing composition to form the surfactant-containing composition into a foamy formulation, and the foamy surfactant composition is applied to hair for cleansing.

[0046] In this specification, the surfactant-containing composition is not particularly limited as long as it is a composition containing a surfactant and is applied to the surface of the human body, including skin and hair, and examples thereof include hair cosmetics, facial cleansers, and body cleansers (body shampoos). Examples of hair cosmetics include shampoos, rinses, conditioning agents, treatments, styling agents, hair dyes, and hair growth agents. Among the above, from the viewpoint of more effectively exhibiting the effects of the present invention, the surfactant-containing composition is preferably a hair cosmetic, more preferably one selected from the group consisting of shampoos, rinses, conditioning agents, and treatments, and even more preferably a shampoo. Furthermore, from the viewpoint of more effectively exhibiting the effects of the present invention, the surfactant-containing composition is preferably in a liquid form.

[0047] When hair cosmetics are applied directly to hair, friction occurs between the hair and scalp when lathering or blending the product into the hair, which can cause strain on the hair and scalp. However, by using the carbonated foamable composition according to the first embodiment of the present invention in combination, the product can be applied as a foam-like hair cosmetic, thereby reducing strain on the hair and scalp. Furthermore, the carbonated foamable composition according to the first embodiment of the present invention has excellent instant solubility, and therefore, even when dissolved in a hair cosmetic, it provides excellent feel on the skin (touch). Furthermore, the carbonated foamable composition according to the first embodiment of the present invention can be used in combination with hair cosmetics such as commercially available shampoos and conditioners, and does not require special containers or tools for lathering, making it highly versatile. In particular, when packaged in single-use containers, the composition can be easily carried and used on the go. Furthermore, the carbon dioxide gas can be expected to promote blood circulation.

[0048] More specifically, a method of using the carbonated foamable composition according to the first embodiment of the present invention involves, for example, placing the carbonated foamable composition in the palm of the hand, adding a surfactant-containing composition to the carbonated foamable composition, thoroughly blending the surfactant-containing composition into the carbonated foamable composition on the palm of the hand, allowing it to foam naturally, and then lightly lathering the composition, and applying it to the target area, such as the face, hair, or entire body. The order in which the compositions are placed on the palm does not matter; the surfactant-containing composition may be placed in the palm of the hand and then the carbonated foamable composition may be added to the surfactant-containing composition, but from the viewpoints of reducing scattering of the carbonated foamable composition and enabling the surfactant-containing composition to foam more effectively, it is preferable to place the carbonated foamable composition in the palm of the hand first and then add the surfactant-containing composition.

[0049] Furthermore, if foaming of the surfactant-containing composition is difficult to proceed, water may be further added as necessary. In this case, the timing of adding water is not particularly limited, and for example, the surfactant-containing composition may be added after contacting the carbonated foamable composition with water, or the surfactant-containing composition may be added after contacting the surfactant-containing composition with water. Furthermore, water may be added after contacting the carbonated foamable composition with the surfactant-containing composition. From the viewpoint of more effective foaming of the surfactant-containing composition, it is preferable to add the surfactant composition after contacting the carbonated foamable composition with water. However, from the viewpoint of improving the usability, it is preferable to use the surfactant-containing composition without adding water.

[0050] When the surfactant-containing composition is liquid, the amount of liquid surfactant-containing composition added to the carbonated foamable composition is, from the viewpoints of improving the solubility of the carbonated foamable composition and improving the foaming properties, such that the mass ratio of the carbonated foamable composition to the surfactant-containing composition (carbonated foamable composition / surfactant-containing composition) is preferably 1 / 30 or more, more preferably 1 / 25 or more, even more preferably 1 / 20 or more, and preferably 1 / 0.5 or less, more preferably 1 / 1 or less, and even more preferably 1 / 2 or less. The mass ratio (carbonated foamable composition / surfactant-containing composition) is preferably 1 / 30 or more and 1 / 0.5 or less, more preferably 1 / 25 or more and 1 / 1 or less, and even more preferably 1 / 20 or more and 1 / 2 or less. Furthermore, from the viewpoints of solubility and foaming properties, the amount of water added as needed is preferably 0.1 g or more and 20 g or less, more preferably 0.5 g or more and 15 g or less, and even more preferably 1 g or more and 10 g or less per 1 g of the carbonated foamable composition. The temperature of the water added to the carbonated foaming composition as needed 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.

[0051] When the surfactant-containing composition is liquid, from the viewpoint of foam retention, the carbonated foamable composition according to the first embodiment of the present invention is applied to an object such as hair within preferably 5 minutes, more preferably 3 minutes, even more preferably 2 minutes, and still more preferably 1 minute 30 seconds after contact with the liquid surfactant-containing composition (or after contact of the carbonated foamable composition with water, if the carbonated foamable composition is contacted with water first). The carbonated foamable composition according to the first embodiment of the present invention can be suitably used as a foaming assistant that helps to lather surfactant-containing compositions, particularly hair cosmetics such as shampoos and conditioners.

[0052] The carbonated foamable composition according to the first embodiment of the present invention can be provided by being enclosed in a packaging material. The carbonated foamable composition according to the first embodiment of the present invention is unlikely to swell due to the generation of carbon dioxide gas even when enclosed in a packaging material and stored, and therefore has excellent storage stability in the form of a product enclosed in a packaging material. The shape of the packaging material is not particularly limited as long as it has a structure that can encapsulate the carbonated foamable composition, and examples include a bag shape and a bottle shape. Of these, a bag-shaped packaging material is preferred. The material constituting the packaging material is also not particularly limited as long as it can encapsulate the carbonated foamable composition. For example, in the case of a bag-shaped packaging material, a resin film or a laminate film in which an inorganic thin film made of a metal or metal oxide is laminated on a resin film can be used.

[0053] <Hair cosmetic kit> The hair cosmetic kit according to the first embodiment of the present invention comprises a carbonated foaming composition and a surfactant-containing composition. The carbonated foaming composition and surfactant-containing composition used in the hair cosmetic kit according to the first embodiment of the present invention are the same as those described above. When using the hair cosmetic kit, the carbonated foaming composition and the surfactant-containing composition are brought into contact with each other to form the surfactant-containing composition into a foam-like formulation.

[0054] [Second embodiment: cleaning agent composition] A cleaning agent composition according to a second embodiment of the present invention is a cleaning agent composition containing a carbonate, an organic acid, and a surfactant, wherein the cleaning agent composition contains particles (A) containing the carbonate and particles (B) containing the organic acid, wherein the particles (A) do not contain an organic acid, and the particles (B) do not contain a carbonate, the median diameter of carbonate particles (a) that are raw materials for the particles (A) and the median diameter of organic acid particles (b) that 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, and 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 cleanser composition according to the second embodiment of the present invention exhibits excellent cleansing properties due to the reaction between the carbonate and the organic acid when the cleanser composition is dissolved in water, generating carbon dioxide gas. The cleanser composition according to the second embodiment of the present invention is in powder or granular form and is primarily used for washing the face, body, etc. Such cleanser compositions for application to skin, such as the face or body, are required to have a good feel when lathered, without roughness to the touch, and must be dissolved immediately within a short period of time, so it is desirable for the particles constituting the cleanser composition to have a small particle size. However, it was found that when the particle size of a cleanser composition is small, the effect of adding a moisture absorbent is insufficient, and carbon dioxide gas generation in the packaging material cannot be suppressed, resulting in poor storage stability. Further investigations revealed that in order to suppress carbon dioxide gas generation during storage, the particle sizes of the carbonate and organic acid must be increased to a specific value or greater. The inventors of the present invention have conducted extensive research to resolve these conflicting needs, and as a result have found that both immediate solubility and storage stability can be achieved by adjusting the diameters of the raw material particles and the particles constituting the resulting detergent composition to specific ranges.That is, according to the cleaning composition according to the second embodiment 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 raw material carbonate particles (a), and the median diameter of the particles (B) is equal to or greater than the median diameter of the raw material organic acid particles (b), thereby improving storage stability and reducing roughness to the touch, thereby achieving a good usability. Furthermore, the carbonate and the organic acid are contained in the form of independent particles, namely, the carbonate-containing particles (A) and the organic acid-containing particles (B), thereby further improving storage stability and foaming properties.

[0055] <Carbonate, Carbonate-Containing Particles (A)> The cleaning composition according to the second embodiment of the present invention contains a carbonate. The carbonate is contained in the cleaning composition according to the second embodiment of the present invention in the form of carbonate-containing particles (A). As the carbonate-containing particles (A) used in the cleaning composition according to the second embodiment 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), or a mixture thereof may be used. The particles (A) do not contain an organic acid. Here, "not containing" means that the particles (A) are substantially not containing an organic acid, and the amount of the organic acid in the particles (A) is preferably less than 1% by mass, more preferably 0% by mass.

[0056] The carbonate used in the detergent composition according to the second embodiment of the present invention is as described in the first embodiment, and the preferred range is also the same.

[0057] The content of carbonate in the detergent composition according to the second embodiment of the present invention 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 foaming property. 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.

[0058] <Organic Acid, Particles (B) Containing Organic Acid> The cleaning composition according to the second embodiment of the present invention contains an organic acid. The organic acid is contained in the cleaning composition according to the second embodiment of the present invention in the form of particles (B) containing an organic acid. As the particles (B) containing an organic acid used in the cleaning composition according to the second embodiment of the present invention, the organic acid particles (b) as a raw material 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 particles (B) are substantially free of carbonate, and the amount of carbonate in the particles (B) is preferably less than 1% by mass, more preferably 0% by mass.

[0059] The organic acid used in the cleaning composition according to the second embodiment of the present invention is as described in the first embodiment, and the preferred range is also the same.

[0060] The content of the organic acid in the cleaning composition according to the second embodiment of the present invention 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 foaming property. 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 cleaning 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.

[0061] <Surfactant> The cleaning composition according to the second embodiment of the present invention contains a surfactant. Examples of surfactants used in the cleaning composition according to the second embodiment of the present invention include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants, and one or more of these surfactants may be used. Specific examples of each surfactant are shown below.

[0062] [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.

[0063] Examples of the counter ion 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.), of which sodium ion and potassium ion are preferred, and sodium ion is more preferred.

[0064] [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.

[0065] 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.

[0066] [Amphoteric Surfactant] Examples of the amphoteric surfactant 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.

[0067] [Nonionic Surfactants] 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 these, anionic surfactants are preferred from the viewpoints of good solubility in water and good foaming, and salts of esters of fatty acids having 5 to 18 carbon atoms and isethionic acid are more preferred. Furthermore, amino acid-based anionic surfactants such as N-acylamino acid salts and N-acyl-N-methylamino acid salts are preferred from the viewpoint of low irritation.

[0068] The content of the surfactant in the cleaning composition according to the second embodiment of the present invention 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 foaming ability. From the viewpoint of improving foam-removal 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 still more preferably 35% by mass or less. The content of the surfactant in the cleaning 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 still more preferably 20% by mass or more and 35% by mass or less.

[0069] In the cleaning composition according to the second embodiment of the present invention, 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, 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 cleaning composition according to the second embodiment of the present invention, 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, 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 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.

[0070] The total amount of carbonate and organic acid in the detergent composition according to the second embodiment of the present invention is preferably 35% by mass or more, more preferably 40% by mass or more, even more preferably 45% by mass or more, from the viewpoint of foaming ability, and preferably 70% by mass or less, more preferably 65% ​​by mass or less, 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, even more preferably 45% by mass or less. The total amount of carbonate, organic acid, and surfactant in the detergent composition according to the second embodiment of the present invention is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, from the viewpoint of improving detergency and foaming ability, and preferably 95% by mass or less, more preferably 90% by mass or less, even more preferably 85% by mass or less, from the viewpoint of improving foam retention. The total amount of the carbonate, the organic acid, and the surfactant in the detergent composition according to the second embodiment of the present invention 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.

[0071] <Moisture absorbent> The cleaning composition according to the second embodiment of the present invention preferably further contains a moisture absorbent. The moisture absorbent used in the cleaning composition according to the second embodiment of the present invention is as described in the first embodiment, and the preferred range is also the same.

[0072] The content of the moisture absorbent in the cleaning composition according to the second embodiment of the present invention 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 still more preferably 4% by mass or more, from the viewpoint of improving storage stability. From the viewpoint of improving foaming property, 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 cleaning 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 still more preferably 4% by mass or more and 8% by mass or less.

[0073] <Other Components> The cleanser composition according to the second embodiment of the present invention may contain other components that are commonly used in cleanser compositions, as long as the other components do not impair the object of the present invention. Examples of such other components include excipients, binders, natural colorants, moisturizers, anti-inflammatory agents, disinfectants, antiperspirants, antioxidants, fragrances, and mixtures thereof.

[0074] The excipient used in the detergent composition according to the second embodiment of the present invention is as described in the first embodiment, and the preferred range is also the same. From the viewpoints of solubility, granulation ability, foaming ability, and storage stability, the content of the excipient in the detergent composition according to the second embodiment of the present invention 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.

[0075] Examples of binders used in the cleaning composition according to the second embodiment of 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 cleaning composition according to the second embodiment of the present invention 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 cleaning 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.

[0076] <Particle diameters of carbonate particles (a), organic acid particles (b), particles (A), and particles (B)> The median diameter (D50) of the cleaning composition according to the second embodiment of the present invention is as described in the first embodiment.

[0077] The median sizes of the carbonate particles (a), the organic acid particles (b), the particles (A), and the particles (B) in the cleaning composition according to the second embodiment of the present invention are as described in the first embodiment, and the preferred ranges are also the same.

[0078] It is preferable that the raw material components other than the carbonate and the organic acid in the cleaning composition according to the second embodiment of the present invention have a median diameter equal to or smaller than the median diameters of the carbonate particles (a) and the organic acid particles (b), and the median diameter is usually 170 μm or smaller, for example, from 5 μm to 150 μm.

[0079] In the cleaning composition according to the second embodiment 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 the particles (A) without modification. 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 the particles (B) without modification. When the median diameter of the particles (A) is made larger than the median diameter 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 made larger than the median diameter of the organic acid particles (b), the size can be adjusted, for example, by granulation, as described below.

[0080] <Granulated Particles> In the cleaning composition according to the second embodiment of the present invention, the granulation of the carbonate-containing particles (A) and the organic acid-containing particles (B) is the same as that described in the first embodiment, and the preferred ranges are also the same.

[0081] 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 components other than the carbonate particles (a) and the organic acid particles (b), such as one or more selected from the group consisting of surfactants, excipients, water-soluble polymers (binders, feel-adjusting agents), and moisture absorbents, and it is particularly preferable that the particles be granulated with all components other than the carbonate particles (a) and the organic acid particles (b). Furthermore, from the viewpoint of further improving storage stability and instant solubility, it is preferable that both the particles (A) and the particles (B) are granulated, and from the viewpoint of improving productivity, it is preferable that either the particles (A) or the particles (B) is granulated. Furthermore, it is preferable that the particles (A) or the particles (B) of the cleaning composition according to the second embodiment of the present invention contain a surfactant, or it is preferable that both the particles (A) and the particles (B) contain a surfactant. Specifically, the cleaning composition of the present invention may contain carbonate particles (a) and particles (B) containing an organic acid and a surfactant, or 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.

[0082] The content of the fine powder of 10 μm or less in the cleaning composition according to the second embodiment of the present invention is as described in the first embodiment, and the preferred range is also the same.

[0083] <Granulation Method> As a method for granulating the particles (A) or particles (B) of the cleaning composition according to the second embodiment of the present invention, any of fluidized bed granulation, stirring granulation, tumbling granulation, and extrusion granulation can be used. Among these, fluidized bed granulation is preferred from the viewpoint of improving the solubility of the cleaning composition in water. Specifically, for example, when granulating the 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 achieving granulation. Similarly, when granulating the 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 achieving granulation. 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.

[0084] <Method for producing a detergent composition> A method for producing a detergent composition according to a second embodiment 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 a "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 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 good usability. The granulated particle production 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 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, respectively, to form granulated particles of carbonate (A) and granulated particles of organic acid (B). From the viewpoints of further improving storage stability and instantaneous solubility, it is preferable that the carbonate particles (a) and the organic acid particles (b) are granulated separately. From the viewpoint of improving productivity, it is preferable that only one of the carbonate particles (a) and the organic acid particles (b) is granulated. 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 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 by a known means to produce the detergent composition.

[0085] <Method of Using the Cleanser Composition> The cleanser composition according to the second embodiment of the present invention can be suitably used, for example, for face washing, hair washing, and body washing. The cleanser composition according to the second embodiment of the present invention is a foaming cleanser composition that begins to foam naturally upon addition of water. Therefore, it foams quickly and does not require a time-consuming and labor-intensive special foaming process, making it easy to use. In a method of using the cleanser composition according to the second embodiment of the present invention, for example, the cleanser composition is placed in the palm of the hand, water is added to the cleanser composition, the cleanser composition is thoroughly blended with the water on the palm of the hand, and after foaming naturally, the cleanser composition is lightly foamed and applied to the face, hair, whole body, or other area to be cleaned, for washing. From the viewpoints of improving the solubility and foaming property of the cleanser composition, the amount of water added to the cleanser composition according to the second embodiment of the present invention is such that the mass ratio of the cleanser composition to the added water (cleaner composition / water) is preferably 1 / 30 or more, more preferably 1 / 25 or more, even more preferably 1 / 20 or more, and preferably 1 / 0.5 or less, more preferably 1 / 1 or less, and even more preferably 1 / 2 or less. The temperature of the water added to the cleanser composition according to the second embodiment of the present invention 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 according to the second embodiment of the present invention 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 the addition of water. The cleanser composition according to the second embodiment of the present invention is suitable for use in face care products such as facial cleansers, and body care products such as hand soaps and body soaps. A foaming cleanser product using the cleanser composition of the present invention can be provided in a package. The cleanser composition of the present invention is unlikely to swell due to the generation of carbon dioxide gas even when stored in a package, and therefore has excellent storage stability in the form of a product sealed in a package. The shape of the package is not particularly limited as long as it has a structure that allows the cleanser composition to be sealed therein, and examples thereof include a bag shape and a bottle shape. Among these, a bag-shaped package 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.

[0086] In relation to the first embodiment described above, the present invention further discloses the following items <1> to <21>: <1> A carbonated foamable composition containing a carbonate and an organic acid, the carbonated foamable composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) containing no organic acid and the particles (B) containing no carbonate, the carbonate particles (a) used as a raw material for the particles (A) have a median diameter of 170 μm or less and the organic acid particles (b) used as a raw material for the particles (B) have a median diameter of 500 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) being equal to or greater than the median diameter of the carbonate particles (a), and the median diameter of the particles (B) being equal to or greater than the median diameter of the organic acid particles (b). <2> The carbonated foaming composition according to <1>, wherein at least one of the particles (A) and the particles (B) comprises granulated particles obtained by granulating raw material particles. <3> The carbonated foaming composition according to <1> or <2>, further comprising a moisture absorbent. <4> The carbonated foaming composition according to any one of <1> to <3>, wherein the organic acid comprises one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid. <5> The carbonated foaming composition according to any one of <1> to <4>, wherein the carbonate comprises one or more selected from the group consisting of sodium carbonate and sodium bicarbonate. <6> The carbonated foaming composition according to any one of <3> to <5>, wherein the moisture absorbent is magnesium oxide. <7> The carbonated foaming composition according to any one of <3> to <6>, wherein the particles (A) or the particles (B) are granulated particles further comprising the moisture absorbent. <8> The carbonated foaming composition according to any one of <1> to <7>, wherein the particles (A) are granulated particles further containing an excipient. <9> The carbonated foaming composition according to any one of <1> to <7>, wherein the particles (B) are granulated particles further containing an excipient. <10> The carbonated foaming composition according to any one of <1> to <7>, wherein both the particles (A) and the particles (B) are granulated particles further containing an excipient.<11> A method for producing the carbonated foamable composition according to any one of <1> to <10>, comprising 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 500 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. <12> A method for producing the carbonated foamable composition according to any one of <1> to <10> or the carbonated foamable composition according to <11>, wherein the median diameter of the particles (a) is 10 μm or more and 150 μm or less, and the median diameter of the particles (b) is 10 μm or more and 350 μm or less. <13> The carbonated foamable composition according to any one of <1> to <10> or the method for producing the carbonated foamable composition according to <11> or <12>, wherein at least one of the particles (A) and the particles (B) has a median diameter of 90 μm or more. <14> The carbonated foamable composition according to any one of <2> to <10> or the method for producing the carbonated foamable composition according to any one of <11> to <13>, wherein the median diameter of the granulated particles is 110 μm or more and 350 μm or less. <15> The carbonated foamable composition according to any one of <1> to <10> or the method for producing the carbonated foamable composition according to any one of <11> to <14>, wherein the content of the carbonate salt in the carbonated foamable composition is 15% by mass or more and 65% by mass or less. <16> The carbonated foamable composition according to any one of <1> to <10> or the method for producing the carbonated foamable composition according to any one of <11> to <15>, wherein the content of the organic acid in the carbonated foamable composition is 5% by mass or more and 60% by mass or less. <17> The carbonated foamable composition according to any one of <1> to <10> or the method for producing a carbonated foamable composition according to any one of <11> to <16>, wherein the mass ratio of the organic acid to the carbonate [organic acid / carbonate] is from 0.05 to 10. <18> The carbonated foamable composition according to any one of <1> to <10> or the method for producing a carbonated foamable composition according to any one of <11> to <17>, wherein the total amount of the carbonate and the organic acid in the carbonated foamable composition is 50 to 90 mass%.<19> The carbonated foamable composition according to any one of <3> to <10> or the method for producing the carbonated foamable composition according to any one of <11> to <18>, wherein the content of the moisture absorbent in the carbonated foamable composition is 0.01 to 15% by mass. <20> The carbonated foamable composition according to any one of <1> to <10> or the method for producing the carbonated foamable composition according to any one of <11> to <19>, wherein the coefficient of variation CV of the particles (a) and the particles (b) represented by the following formula (1) is 95% or less: Coefficient of variation CV value (%) = [standard deviation of particle diameter σ] / [median diameter D] × 100 (Formula 1) <21> The carbonated foamable composition according to any one of <1> to <10> or the method for producing the carbonated foamable composition according to any one of <11> to <20>, wherein the content of particles having a size of 10 μm or less is 0.001% by mass or more and 3.5% by mass or less of all particles constituting the carbonated foamable composition.

[0087] Furthermore, with respect to the second embodiment described above, the present invention further discloses the following items <31> to <51>. <31> A cleaning composition containing a carbonate, an organic acid, and a surfactant, the cleaning composition comprising particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) containing no organic acid, and the particles (B) containing no carbonate, the median diameter of carbonate particles (a) used as a raw material for particles (A) and the median diameter of organic acid particles (b) used as a raw material for particles (B) are 170 μm or less, the median diameter of at least one of particles (A) and particles (B) is 80 μm or more, the median diameter of particles (A) is equal to or greater than the median diameter of carbonate particles (a), and the median diameter of particles (B) is equal to or greater than the median diameter of organic acid particles (b). <32> The cleaning agent composition according to <31>, wherein at least one of the particles (A) and the particles (B) comprises granulated particles obtained by granulating raw material particles. <33> The cleaning agent composition according to <31> or <32>, further comprising a moisture absorbent. <34> The cleaning agent composition according to any one of <31> to <33>, wherein the organic acid comprises one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid. <35> The cleaning agent composition according to any one of <31> to <34>, wherein the carbonate comprises one or more selected from the group consisting of sodium carbonate and sodium bicarbonate. <36> The cleaning agent composition according to any one of <33> to <35>, wherein the moisture absorbent is magnesium oxide. <37> The cleaning agent composition according to any one of <33> to <36>, wherein the particles (A) or the particles (B) are granulated particles further comprising the surfactant and the moisture absorbent. <38> The cleaning composition according to any one of <31> to <37>, wherein the content of the carbonate is 10% by mass or more and 60% by mass or less. <39> The cleaning composition according to any one of <31> to <38>, wherein the content of the organic acid is 5% by mass or more and 60% by mass or less. <40> The cleaning composition according to any one of <31> to <39>, wherein the content of the surfactant is 10% by mass or more and 50% by mass or less.<41> The cleaning composition according to any one of <31> to <40>, wherein the mass ratio of the total amount of the carbonate and the organic acid to the surfactant [(carbonate + organic acid) / surfactant] is from 0.1 to 20. <42> The cleaning composition according to any one of <31> to <41>, wherein the mass ratio of the organic acid to the carbonate [organic acid / carbonate] is from 0.05 to 10. <43> The cleaning composition according to any one of <31> to <42>, wherein the total amount of the carbonate and the organic acid is from 35% to 70% by mass. <44> The cleaning composition according to any one of <31> to <43>, wherein the median size of the carbonate particles (a), which are a raw material for the particles (A), and the median size of the organic acid particles (b), which are a raw material for the particles (B), are from 20 μm to 120 μm, and the median size of at least one of the particles (A) and the particles (B) is from 90 μm to 400 μm. <45> The cleaning composition according to any one of <31> to <44>, wherein the content of the carbonate is from 20% to 50% by mass, and the content of the organic acid is from 7% to 30% by mass. <46> The cleaning composition according to any one of <31> to <45>, wherein the content of the surfactant is from 15% to 45% by mass, and the mass ratio of the total amount of the carbonate and the organic acid to the surfactant [(carbonate + organic acid) / surfactant] is from 1.0 to 10. <47> The cleaning composition according to any one of <31> to <46>, wherein the particles (A) contain a surfactant. <48> The cleaning composition according to any one of <31> to <46>, wherein the particles (B) contain a surfactant. <49> The cleaning composition according to any one of <31> to <46>, wherein both the particles (A) and the particles (B) contain a surfactant. <50> A method for producing the cleaning composition according to any one of <31> to <49>, comprising the 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 prepare granulated particles having a median diameter of 80 μm or more.<51> The method for producing a cleaning composition according to <50>, wherein the carbonate particles (a) and the organic acid particles (b) have a median diameter of 20 μm or more and 120 μm or less, and the granulated particles have a median diameter of 90 μm or more and 400 μm or less.

[0088] 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.

[0089] [Method for measuring median diameter and CV value] The particle diameters of carbonate particles (a), organic acid particles (b), particles (A), and particles (B) were measured using 3 g of each particle with a Camsizer XT (particle size measuring device, manufactured by RETSCH Corporation). For particles (A) and particles (B), the median diameter and CV value were measured after granulation only when they were used as granules.

[0090] [Method for measuring the content (number ratio) of granulated particles in particles] A powder or granular detergent composition was sieved through a sieve with a mesh size of 100 μm, 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 Miniscope TM3030 tabletop microscope (manufactured by Hitachi High-Technologies Corporation). Twenty particles were randomly selected and observed, and the content (number ratio) was calculated, with agglomerates considered to be granulated particles.

[0091] [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.

[0092] <First embodiment> [Example 1-1] A carbonated foaming composition was obtained according to the formulation shown in Table 1. 158.6 g of citric acid (citric acid anhydrous 60 manufactured by Iwata Chemical Industry Co., Ltd.), 39.5 g of magnesium oxide (manufactured by Kyowa Chemical Industry Co., Ltd.), 84.7 g of talc (SW-K4 manufactured by Asada Flour Milling Co., Ltd.), and 16.3 g of cationized hydroxyethyl cellulose (Soft Cat Polymer SL-30 manufactured by The Dow Chemical Company) were charged into a fluidized bed granulator (FD-MP-01E manufactured by Powrex Corporation) and the mixture was passed through a 0.2 m 3 fluidized bed granulator. ３Granulation was performed under conditions of a suction air temperature of 80°C, while adding 90 g (0.9 g solids) of 1.0% carboxymethylcellulose (Sunrose, manufactured by Nippon Paper Industries Co., Ltd.) aqueous solution at a rate of 4 g / min, yielding a granule with a median diameter of 175 μm. The resulting granule and 264.3 g of sodium bicarbonate (manufactured by AGC Inc.) were placed in a bag and mixed by hand in a transparent vinyl bag until uniform, producing a carbonated foaming composition. The resulting carbonated foaming composition was evaluated according to the following methods. The results are shown in Table 1.

[0093] [Examples 1-2 and 1-3] Carbonated foamable compositions were obtained in the same manner as in Example 1-1, except that the formulations shown in Table 1 were used. Using the obtained carbonated foamable compositions, various evaluations were carried out according to the methods shown below. The results are shown in Table 1.

[0094] Example 1-4 Sodium bicarbonate was granulated according to the formulation shown in Table 1. 195.3 g of sodium bicarbonate (AGC Inc.), 29.2 g of magnesium oxide (Kyowa Chemical Industry Co., Ltd.), 62.6 g of talc (SW-K4, Asada Flour Milling Co., Ltd.), and 12.0 g of cationized hydroxyethyl cellulose (Soft Cat Polymer SL-30, The Dow Chemical Company) were charged into a fluidized bed granulator (FD-MP-01E, Powrex Corporation). Granulation was carried out under the same conditions as in Example 1-1, while adding 66 g of a 1.0% CMC aqueous solution (solids content: 0.7 g) at a rate of 4 g / min, yielding granules with a median diameter of 145 μm. The resulting granules and 117.2 g of citric acid (Citric Acid Anhydrous 60, Iwata Chemical Industry Co., Ltd.) were hand-mixed in a transparent vinyl bag until uniform, producing a carbonated foaming composition. The resulting carbonated foaming composition was evaluated according to the following methods. The results are shown in Table 1.

[0095] [Example 1-5] A carbonated foamable composition was obtained in the same manner as in Example 1-1, except that citric acid (citric acid fine powder manufactured by Iwata Chemical Industry Co., Ltd.) was used. The obtained carbonated foamable composition was used to perform various evaluations according to the methods described below. The results are shown in Table 1.

[0096] Example 1-6 A carbonated foamable composition was obtained in the same manner as in Example 1-1, except that 142.9 g of citric acid (anhydrous citric acid 60 manufactured by Iwata Chemical Co., Ltd.), 37.6 g of magnesium oxide (manufactured by Kyowa Chemical Industry Co., Ltd.), 75.8 g of talc (SW-K4 manufactured by Asada Flour Milling Co., Ltd.), 15.6 g of cationized hydroxyethyl cellulose (Soft Cat Polymer SL-30 manufactured by The Dow Chemical Company), and 26.9 g of sodium cocoyl isethionate (JODAPONLACI manufactured by BASF) were used. The resulting carbonated foamable composition was evaluated according to the following methods. The results are shown in Table 1.

[0097] [Comparative Examples 1-1 to 1-3] Carbonated foaming compositions were obtained according to the formulations shown in Table 2. In Comparative Examples 1-1 to 1-3, all ingredients were placed in a bag without granulation and mixed by hand in a transparent vinyl bag until uniform, thereby obtaining a carbonated foaming composition. The obtained carbonated foaming compositions were used to perform various evaluations according to the methods described below. The results are shown in Table 2.

[0098] [Foaming (without water addition)] 1 g of each carbonated foaming composition was placed in the palm of the hand, and 6 g of a commercially available shampoo (Essential the Beauty, Kao Corporation) was added to the carbonated foaming composition. The shampoo was thoroughly blended into the carbonated foaming composition on the palm of the hand, and after natural foaming (approximately 10 seconds after adding the shampoo), the composition was mixed with the fingers of the other hand to create a lather. While continuing to foam, a three-member expert panel evaluated the foaming performance within 3 minutes of adding the shampoo, based on the following criteria, and the results were determined through discussion among the expert panels. 1: Fills the palm of the hand with foam in less than 30 seconds 2: Fills the palm of the hand with foam in 30 seconds to less than 1 minute 3: Fills the palm of the hand with foam in 1 minute to less than 2 minutes 4: Fills the palm of the hand with foam in 2 minutes to less than 3 minutes 5: Takes 3 minutes or more to fill the palm of the hand [Foamability (with added water)] 1 g of each carbonated foamable composition was placed in the palm of the hand, 5 g of water at 42°C was added to the carbonated foamable composition, the water was thoroughly blended into the carbonated foamable composition on the palm, and after foaming had occurred naturally (approximately 10 seconds after the addition of water), 6 g of a commercially available shampoo (Kao Corporation, Essential the Beauty) was added, the shampoo was thoroughly blended into the carbonated foamable composition on the palm, and after foaming had occurred naturally, the mixture was mixed with the fingers of the other hand to form a lather. While continuing to foam, a three-member expert panel evaluated the foamability within 3 minutes of adding water according to the following criteria, and the result was determined by discussion among the expert panel. 1: Foams to a palm-full in less than 30 seconds 2: Foams to a palm-full in 30 seconds or more but less than 1 minute 3: Foams to a palm-full in 1 minute or more but less than 2 minutes 4: Foams to a palm-full in 2 minutes or more but less than 3 minutes 5: It takes more than 3 minutes to foam to a palm-full

[0099] [Storage Stability] 3.9 g of each carbonated foamable composition was sealed in an 80 mm x 50 mm x 18 mm aluminum packaging material at 50°C and 50% RH, and the amount of expansion of the aluminum packaging material was measured before and after storage at 50°C for 4 weeks. Specifically, a water bath filled with water at 25°C was placed on a balance and its weight was measured. Next, the aluminum packaging material containing the carbonated foamable composition was completely submerged in the water bath and its mass was measured. The difference in mass of the aluminum packaging material before and after submersion 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 packaging material before storage. The same measurement was then performed after 4 weeks of storage to determine the volume of the aluminum packaging material after storage, and the amount of expansion of the aluminum packaging material after storage was calculated from the difference in volume between the aluminum packaging material before and after storage. A smaller amount of expansion indicates better storage stability.

[0100] [Feeling in use (no water added)] 1 g of each carbonated foamable composition was placed in the palm of the hand, and 6 g of a commercially available shampoo (Essential the Beauty, Kao Corporation) was added to the carbonated foamable composition. The shampoo was thoroughly blended into the carbonated foamable composition on the palm of the hand, and after allowing to foam naturally, the mixture was mixed with the fingers of the other hand to create a lather. While continuing to lather, a three-member expert panel evaluated the feel of the lather within 3 minutes of adding the shampoo to the carbonated foamable composition according to the following criteria, and the results were determined by discussion among the expert panels. 1: No roughness felt from the beginning 2: Roughness felt at first, but disappeared in the early stages of lathering 3: Roughness felt at first, but disappeared during lathering 4: Roughness felt, but disappeared after lathering 5: Roughness felt, but did not disappear even after lathering (The above "early stages of lathering" refers to within 1 minute after adding the shampoo liquid to the carbonated foaming composition, "during lathering" refers to more than 1 minute but not more than 2 minutes, and "after lathering" refers to more than 2 minutes but not more than 3 minutes.)

[0101] [Feeling on the hand (with water added)] 1 g of each carbonated foamable composition was placed in the palm of the hand, 5 g of water at 42°C was added to the carbonated foamable composition, the water was thoroughly blended into the carbonated foamable composition on the palm, and after allowing it to foam naturally (approximately 10 seconds after adding the water), 6 g of a commercially available shampoo (Essential the Beauty, Kao Corporation) was added, the shampoo was thoroughly blended into the carbonated foamable composition on the palm, and after allowing it to foam naturally, the shampoo was mixed with the fingers of the other hand to create a lather. While continuing to lather, the feel on the hand of the foam within 3 minutes after adding the water was evaluated by a three-member expert panel according to the following criteria, and the evaluation was determined by discussion among the expert panel. 1: No roughness is felt from the beginning 2: Roughness is felt at first, but disappears in the early stages of whipping 3: Roughness is felt at first, but disappears during whipping 4: Roughness is felt, but disappears after whipping 5: Roughness is felt, and does not disappear even after whipping (The above "early stages of whipping" refers to within 1 minute after adding water to the carbonated foaming composition, "during whipping" refers to more than 1 minute but less than 2 minutes, and "after whipping" refers to more than 2 minutes but less than 3 minutes.)

[0102]

[0103]

[0104] *1 "Organic acid granulation" in the "Granulation state" column in Tables 1 and 2 refers to granulation of the organic acid and all components other than the carbonate (excipient, water-soluble polymer, and moisture absorbent), and these granulated particles correspond to the particles (B) containing an organic acid 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 particles (A) containing a carbonate). "Carbonate granulation" refers to granulation of the carbonate and all components other than the organic acid (excipient, water-soluble polymer, and moisture absorbent), and these granulated particles correspond to the particles (A) containing a carbonate 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 particles (B) containing an organic acid). "Ungranulated" refers to a state in which all powder components were used without granulation. *2 Soft Cat Polymer SL-30 manufactured by The Dow Chemical Company *3 Sunrose manufactured by Nippon Paper Industries Co., Ltd.

[0105] Tables 1 and 2 show that the carbonated foamable compositions of this example have excellent storage stability and a pleasant feel. In addition, all shampoos to which the carbonated foamable compositions of this example were applied had good foaming properties, foam rinse-off, and foam retention.

[0106] Second Embodiment Example 2-1 A detergent composition was obtained according to the formulation shown in Table 3. 67.4 g of citric acid (anhydrous citric acid 60 manufactured by Iwata Chemical Industry Co., Ltd.), 118.3 g of a 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 mixture was passed through a 0.3 m 3 airflow system. ３ The mixture was granulated while adding 314 g of a 1.6% aqueous carrageenan solution (solid content: 5.0 g) 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 in the bag until uniform, yielding a detergent composition. The resulting detergent composition was used to evaluate various properties according to the methods described below. The results are shown in Table 3.

[0107] [Examples 2-2, 2-3, 2-5 to 2-8] Cleaning compositions were obtained in the same manner as in Example 2-1, except that the formulations shown in Table 3 were used. Using the obtained cleaning compositions, various evaluations were carried out according to the methods shown below. The results are shown in Table 3.

[0108] Example 2-4 Sodium bicarbonate was granulated according to the formulation shown in Table 3. 139.9 g of sodium bicarbonate (AGC Inc.), 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 2-1, 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, to prepare a detergent composition. The resulting detergent composition was used to perform various evaluations according to the methods described below. The results are shown in Table 3.

[0109] [Comparative Examples 2-1 to 2-3] Cleaning compositions were obtained according to the formulations shown in Table 4. In Comparative Examples 2-1 to 2-3, all ingredients were placed in a bag and mixed by hand in the bag without granulation to obtain a cleaning composition. The obtained cleaning compositions were used to perform various evaluations according to the methods described below. The results are shown in Table 4.

[0110] [Storage Stability] 3.9 g of each detergent composition was sealed in an 80 mm x 50 mm x 18 mm aluminum packaging material at 50°C and 50% RH, and the amount of expansion of the aluminum packaging material 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 packaging material 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 packaging material in water was converted into volume using Archimedes' principle, assuming a water density of 1.0 g / ml, and this was defined as the volume of the aluminum packaging material before storage. The same measurement was then performed after 4 weeks of storage to determine the volume of the aluminum packaging material after storage, and the amount of expansion of the aluminum packaging material after storage was calculated from the difference in the volume of the aluminum packaging material before and after storage. A smaller amount of expansion indicates better storage stability.

[0111] [Texture] 1 g of the detergent composition was placed in the palm of one hand, and 10 g of water at 42°C was dripped onto the detergent composition. The detergent composition was thoroughly soaked in the water on the palm of one hand, and after natural foaming (approximately 10 seconds after dripping the water), the other palm was placed together to create foam. While continuing to foam, a three-member expert panel evaluated the texture of the foam within 3 minutes of dripping the water according to the following criteria, and the rating was determined through discussion among the expert panel members: 1: No roughness felt from the beginning; 2: Roughness felt at first, but disappeared in the early stages of foaming; 3: Roughness felt at first, but disappeared during foaming; 4: Roughness felt, but disappeared after foaming; 5: Roughness felt, but did not disappear even after foaming. (The above "early stage of foaming" refers to within 1 minute after dripping the water onto the detergent composition, "during foaming" refers to more than 1 minute and within 2 minutes, and "after foaming" refers to more than 2 minutes and within 3 minutes.)

[0112]

[0113]

[0114] *1 "Organic acid granulation" in the "Granulation state" column in Tables 3 and 4 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 particles (B) containing an organic acid 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 particles (A) containing a carbonate). "Carbonate granulation" refers to a state in which the 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 particles (A) containing a carbonate 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 particles (B) containing an organic acid). "Ungranulated" refers to a state in which all powder components are used without granulation. *2 Carrageenan was dissolved in purified water to prepare a 1.6% carrageenan aqueous solution, but since the purified water evaporates during the manufacturing process, the carrageenan content in Tables 3 and 4 indicates the solid content. *3 Particle size in Tables 3 and 4 indicates the median diameter.

[0115] It can be seen from Tables 3 and 4 that the detergent compositions of the present examples have excellent storage stability and a pleasant feel to the touch. In addition, all of the detergent compositions of the present examples had good foaming properties, foam removal, and foam retention.

[0116] According to the present invention, a carbonated foamable composition powder or granular cleanser composition can be provided that has high storage stability, reduced roughness to the touch, and a good feel when used. The carbonated foamable composition can be used in combination with hair cosmetics such as shampoos and conditioners to form the hair cosmetics into a foamy formulation. 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 carbonated foamable composition containing a carbonate and an organic acid, the carbonated foamable composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) not containing organic acid and the particles (B) not containing carbonate, the carbonate particles (a) which are a raw material for the particles (A) have a median diameter of 170 μm or less and the organic acid particles (b) which are a raw material for the particles (B) have a median diameter of 500 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 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).

2. The carbonic acid foaming 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 carbonic acid foaming composition according to claim 1 or 2, further comprising a moisture absorbent.

4. The carbonic acid foaming composition according to any one of claims 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 carbonated foaming composition according to any one of claims 1 to 4, wherein the carbonate salt contains one or more selected from the group consisting of sodium carbonate and sodium hydrogen carbonate.

6. The carbonic acid foaming composition according to any one of claims 3 to 5, wherein the moisture absorbent is magnesium oxide.

7. The carbon dioxide foaming composition according to any one of claims 3 to 6, wherein the particles (A) or the particles (B) are granulated particles further containing the moisture absorbent.

8. A carbonated foaming composition according to any one of claims 1 to 7, further comprising an excipient, wherein either the particles (A) or the particles (B), or both the particles (A) and the particles (B), contain the excipient.

9. A carbon dioxide foaming composition according to any one of claims 1 to 8, wherein the median diameter of the particles (a) is 10 μm or more and 150 μm or less, and the median diameter of the particles (b) is 10 μm or more and 350 μm or less.

10. A carbon dioxide foaming composition according to any one of claims 1 to 9, wherein at least one of the particles (A) and the particles (B) has a median diameter of 90 μm or more.

11. A carbon dioxide foaming composition according to any one of claims 2 to 10, wherein the median diameter of the granulated particles is 110 μm or more and 350 μm or less.

12. A carbonated foamable composition according to any one of claims 1 to 10, wherein the content of the carbonate in the carbonated foamable composition is 15 mass% or more and 65 mass% or less.

13. A carbon dioxide foaming composition according to any one of claims 1 to 10, wherein the content of the organic acid in the carbon dioxide foaming composition is 5% by mass or more and 60% by mass or less.

14. A carbonated foaming composition according to any one of claims 1 to 10, wherein the mass ratio of the organic acid to the carbonate [organic acid / carbonate] is 0.05 or more and 10 or less.

15. A carbonated foaming composition according to any one of claims 1 to 10, wherein the total amount of the carbonate and the organic acid in the carbonated foaming composition is 50 to 90 mass %.

16. The carbon dioxide foaming composition according to any one of claims 3 to 10, wherein the content of the moisture absorbent in the carbon dioxide foaming composition is 0.01 to 15 mass %.

17. The carbonated foamable composition according to any one of claims 1 to 10, wherein the coefficient of variation CV value of the particles (a) and the particles (b) represented by the following formula (1) is 95% or less: Coefficient of variation CV value (%) = [Standard deviation of particle diameter σ] / [Median diameter D] x 100 (Formula 1) 18. A carbonated foamable composition described in any one of claims 1 to 10, in which the content of particles having a size of 10 μm or less among all particles constituting the carbonated foamable composition is 0.001 mass% or more and 3.5 mass% or less.

19. A method for producing a carbonated foamable composition according to any one of claims 1 to 18, comprising the steps of using carbonate particles (a) having a median diameter of 170 μm or less and organic acid particles (b) having a median diameter of 500 μm or less as raw materials, 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.

20. A method for using a carbonated foaming composition according to any one of claims 1 to 18, comprising contacting the carbonated foaming composition with a surfactant-containing composition to form the surfactant-containing composition into a foam-like formulation.

21. A method for using the carbonated foaming composition according to claim 20, wherein the surfactant-containing composition is a hair cosmetic.

22. A hair cosmetic kit comprising the carbonated foaming composition according to any one of claims 1 to 18 and a surfactant-containing composition.

23. A cleaning composition containing a carbonate, an organic acid, and a surfactant, the cleaning composition containing particles (A) containing the carbonate and particles (B) containing the organic acid, the particles (A) do not contain organic acid, and the particles (B) do not contain carbonate, the median diameter of carbonate particles (a) which are a raw material for particles (A) and the median diameter of organic acid particles (b) which are a raw material for particles (B) are 170 μm or less, the median diameter of at least one of particles (A) and particles (B) is 80 μm or more, the median diameter of particles (A) is equal to or greater than the median diameter of carbonate particles (a), and the median diameter of particles (B) is equal to or greater than the median diameter of organic acid particles (b).

24. The cleaning composition according to claim 23, wherein at least one of the particles (A) and the particles (B) comprises granulated particles obtained by granulating raw material particles.

25. The cleaning composition according to claim 23 or 24, further comprising a moisture absorbent.

26. The cleaning composition according to any one of claims 23 to 25, wherein the organic acid comprises one or more selected from the group consisting of citric acid, succinic acid, tartaric acid, and ascorbic acid.

27. The cleaning composition according to any one of claims 23 to 26, wherein the carbonate comprises one or more selected from the group consisting of sodium carbonate and sodium hydrogen carbonate.

28. The cleaning composition according to any one of claims 25 to 27, wherein the moisture absorbent is magnesium oxide.

29. The cleaning composition according to any one of claims 25 to 28, wherein the particles (A) or the particles (B) are granulated particles further containing the surfactant and the moisture absorbent.

30. The cleaning composition of claim 29, wherein the particles (A) or the particles (B), or both the particles (A) and the particles (B), contain a surfactant.

31. A method for producing a cleaning composition according to any one of claims 23 to 30, comprising the 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 produce granulated particles having a median diameter of 80 μm or more.

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