Foaming agent composition

Abstract

To provide a foaming agent composition having excellent foamability, storage stability, and feeling of use, and a method for generating carbon dioxide using the foaming agent composition.SOLUTION: Provided are a foaming agent composition and a method for generating carbon dioxide by mixing the foaming agent composition with water, wherein the foaming agent composition contains an agent A containing carbonate particles, an agent B containing C2-6 organic acid particles, and a nonaqueous solvent, wherein the nonaqueous solvent has a relative permittivity of 10 or less at 25°C, at least one of the agent A and the agent B contains a coating material having a dissolution amount of at least 5 g in 100 g of water, and surfaces of at least one of the carbonate particles and the organic acid particles are at least partially coated with the coating material.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a foaming agent composition and a method for generating carbon dioxide.

Background Art

[0002] Cosmetics such as skin care lotions and bath agents are known to be foamed with carbon dioxide or the like for the purpose of improving blood circulation promoting effects and cleaning effects. Conventionally, as an agent for generating carbon dioxide, an agent containing a carbonate and an acidic component such as an organic acid is known. These agents are mixed with water during use to generate carbon dioxide. For example, Patent Document 1 discloses a novel bath agent comprising at least a foaming component (4) and a liquid substance (1) that is liquid at room temperature. As the liquid substance (1), one or more selected from an oily component (2) and a surfactant 3 are used. As the foaming component (4), at least an organic acid (5) and a carbonate (6) are used. The liquid substance (1) and the foaming component (4) are formulated so as to be in a sherbet state, and the foaming component (4) is not reacted with water until it is used with the liquid substance (1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The novel bath agent of Patent Document 1 contains an acidic substance and a carbon dioxide generating substance that reacts with the acidic substance to generate carbon dioxide gas in the same agent. However, in terms of foamability, storage stability, and usability depending on the amount of carbon dioxide generated, it is not satisfactory. The present invention relates to a foaming agent composition excellent in foamability, storage stability, and usability, and a method for generating carbon dioxide using the foaming agent composition.

Means for Solving the Problem

[0005] The inventors of the present invention have found that a foaming agent composition containing an agent A containing carbonate particles, an agent B containing organic acid particles, and a non-aqueous solvent having a specific relative dielectric constant, wherein at least one of the agent A and the agent B contains a coating material having a specific dissolution amount in 100 g of water, and at least one of the carbonate particles and the organic acid particles is coated with the coating material at least on a part of the surface, can solve the above problems. The present invention relates to the following [1] to [2]. [1] A foaming agent composition containing an agent A containing carbonate particles, an agent B containing organic acid particles having 2 to 6 carbon atoms, and a non-aqueous solvent, wherein the relative dielectric constant of the non-aqueous solvent at 25 °C is 10 or less, and at least one of the agent A and the agent B contains a coating material having a dissolution amount in 100 g of water of 5 g or more, and at least one of the carbonate particles and the organic acid particles is coated with the coating material at least on a part of the surface. [2] A method for generating carbon dioxide by mixing the foaming agent composition according to [1] with water.

Advantages of the Invention

[0006] According to the present invention, there are provided a foaming agent composition excellent in foamability, storage stability and usability, and a method for generating carbon dioxide using the foaming agent composition.

Embodiments for Carrying Out the Invention

[0007] [Foaming Agent Composition] The foaming agent composition of the present invention is a foaming agent composition containing an agent A containing carbonate particles (hereinafter also referred to as "carbonate" or "carbonate A"), an agent B containing organic acid particles having 2 to 6 carbon atoms (hereinafter also referred to as "organic acid" or "organic acid B"), and a non-aqueous solvent, wherein the relative dielectric constant of the non-aqueous solvent at 25 °C is 10 or less, and at least one of the agent A and the agent B contains a coating material having a dissolution amount in 100 g of water of 5 g or more, and at least one of the carbonate particles and the organic acid particles is coated with the coating material at least on a part of the surface. Preferably, a plurality of the Agent A and the Agent B are present, and preferably, the Agent A and the Agent B are dispersed in the non-aqueous solvent.

[0008] The foaming agent composition of the present invention is excellent in foamability, storage stability, and usability. Although the detailed mechanism by which such effects are obtained is unknown, some are speculated as follows. In the foaming agent composition of the present invention, an Agent A containing carbonate particles and an Agent B containing organic acid particles having 2 to 6 carbon atoms are in a state of being dispersed in a non-aqueous solvent. Since the non-aqueous solvent used in the present invention has a relative permittivity of 10 or less at 25°C, ionization of the carbonate particles in the foaming agent composition is less likely to occur. Further, at least a part of the surface of at least one of the carbonate particles in the Agent A and the organic acid particles in the Agent B is coated with a coating material, so that the reaction between the two in the non-aqueous solvent can be further suppressed. As a result, the foaming agent composition of the present invention can suppress the generation of carbon dioxide during storage and is excellent in storage stability. On the other hand, the coating material used in the present invention is characterized in that its dissolution amount in 100 g of water is 5 g or more. Therefore, when the foaming agent composition of the present invention is used in contact with water, the coating material that coats at least one of the carbonate particles in the Agent A and the organic acid particles in the Agent B is quickly dissolved and removed in water, so that the reaction between the carbonate particles and the organic acid particles is not hindered, and the reaction can be quickly caused. As a result, the foaming agent composition of the present invention can generate sufficient carbon dioxide and is excellent in foamability. Further, as described above, since the coating material is quickly removed and the carbonate particles and the organic acid particles can be quickly reacted, the foreign body sensation at the time of touching the skin can be reduced and the usability can be improved. From the above, it is considered that the foaming agent composition of the present invention can achieve both foamability and storage stability, and can further improve the usability.

[0009] In the foaming agent composition of the present invention, it is preferable that at least one of Agent A and Agent B is granulated with a coating material. From the viewpoint of storage stability, it is preferable that Agent A is granulated with a coating material, and from the viewpoint of foamability, it is preferable that Agent B is granulated with a coating material. By granulating with a coating material, each particle of the carbonate particles in Agent A is covered with the coating material, and they are bonded with the coating material. As a result, it becomes difficult for moisture in the air to penetrate to each carbonate particle, so the storage stability is improved. The same applies to the organic acid particles in Agent B. Further, in the invention, from the viewpoints of improving foamability, storage stability, and usability, at least one of Agent A and Agent B contains a coating material having a dissolution amount of 5 g or more in 100 g of water, and at least one of the carbonate particles and the organic acid particles is at least partially covered with the coating material on the surface. Particularly from the viewpoint of storage stability, it is more preferable that at least the carbonate particles are at least partially covered with the coating material.

[0010] In the composition of the present invention, the molar equivalent ratio (carbonate / organic acid) of the carbonate particles (carbonate A) in Agent A and the organic acid particles having 2 to 6 carbon atoms (organic acid B) in Agent B is preferably 0.5 or more, more preferably 0.8 or more, from the viewpoints of foamability and storage stability, and is preferably 2 or less, more preferably 1.2 or less. The molar equivalent ratio of carbonate A in Agent A and organic acid B in Agent B is preferably 0.5 or more and 2 or less, more preferably 0.8 or more and 1.2 or less.

[0011] <Each component> 〔Coating material〕 The coating material is used to suppress the reaction between carbonate A and an organic acid having 2 to 6 carbon atoms (organic acid B) in a non-aqueous solvent having a relative dielectric constant of 10 or less at 25°C from the viewpoint of particularly enhancing storage stability (hereinafter, also simply referred to as storage stability). The coating material is immiscible with a non-aqueous solvent having a relative permittivity of 10 or less at 25°C. From the viewpoints of foamability, storage stability, and usability, the dissolution amount (at 25°C, 1013.25 hPa) in 100 g of water is 5 g or more, preferably 10 g or more, more preferably 20 g or more, and the dissolution amount may be infinite, but may also be 10,000 g or less. For the measurement of the dissolution amount, reference can be made to, for example, Journal of the Chemical Society of Japan, 1985, No. 11, p2116-2119; ibid., 1982, No. 11, p1830-1834, etc. From the viewpoint of storage stability, the melting point of the coating material is preferably 25°C or higher, more preferably 30°C or higher, and there is no particular upper limit, but it may be 300°C or lower. From the viewpoints of foamability, storage stability, and usability, the coating material preferably contains one or more selected from organic compounds and inorganic compounds, more preferably one or more selected from surfactants, polyols, water-soluble polymers, and water-soluble inorganic salts, still more preferably one or more selected from surfactants, polyols, and water-soluble inorganic salts, and two or more kinds may be used. In addition, from the viewpoint of suppressing the generation of carbon dioxide during storage and improving storage stability, it is preferable to exclude organic acids having 2 to 6 carbon atoms as the coating material for agent A (carbonate particles) and to exclude carbonates as the coating material for agent B (organic acid particles having 2 to 6 carbon atoms). The dissolution amount (at 25°C, 1013.25 hPa) of the water-soluble polymer and the water-soluble inorganic salt in 100 g of water is as described above.

[0012] From the viewpoints of foamability, storage stability, and usability, the molecular weight of the surfactant is preferably 70 or more, more preferably 100 or more, still more preferably 200 or more, and from the viewpoints of ease of production and foamability, it is preferably 10,000 or less, more preferably 6,000 or less, still more preferably 1,000 or less. Specific examples of the surfactant include anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, etc. From the viewpoint of coating agents A and B, it is preferable to contain a nonionic surfactant. These may be used alone or in combination of two or more.

[0013] As the anionic surfactant, an anionic surfactant having a hydrocarbon group with 12 to 24 carbon atoms, more preferably 12 to 16 carbon atoms, and still more preferably 12 to 14 carbon atoms is preferred. For example, fatty acid salts with 12 to 24 carbon atoms such as sodium laurate, potassium laurate, and potassium palmitate; polyoxyethylene alkyl ether carboxylates such as sodium polyoxyethylene tridecyl ether acetate; alkyl phosphates such as potassium lauryl phosphate, sodium lauryl phosphate, arginine lauryl phosphate, potassium myristyl phosphate, sodium myristyl phosphate, arginine myristyl phosphate, potassium palmityl phosphate, sodium palmityl phosphate, and arginine palmityl phosphate; polyoxyethylene alkyl ether phosphates such as sodium polyoxyethylene oleyl ether phosphate and sodium polyoxyethylene stearyl ether phosphate; alkyl sulfate esters such as sodium lauryl sulfate and potassium lauryl sulfate; polyoxyethylene alkyl ether sulfate esters such as potassium polyoxyethylene lauryl sulfate, sodium polyoxyethylene lauryl sulfate, and triethanolamine polyoxyethylene lauryl sulfate; acylated amino acid salts such as sodium lauroyl sarcosinate, monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, triethanolamine N-lauroyl glycine, potassium N-coconut fatty acid acyl glycine, triethanolamine N-lauroyl-β-alanine, and triethanolamine N-stearoyl-β-alanine; fatty acid amide sulfonates such as sodium N-myristoyl-N-methyl taurine and sodium N-stearoyl-N-methyl taurine; sulfosuccinates such as sodium di-2-ethylhexyl sulfosuccinate, etc. can be mentioned.

[0014] Examples of cationic surfactants include tertiary amine compounds and quaternary ammonium salts. As the tertiary amine compound, those formed into salts with organic acids and / or inorganic acids can be used. Examples of alkyltrimethylammonium salts include octyltrimethylammonium, decyltrimethylammonium chloride, lauryltrimethylammonium chloride, and tetradecyltrimethylammonium chloride; examples of dialkyldimethylammonium salts include didecyldimethylammonium chloride and distearyldimethylammonium chloride.

[0015] Examples of nonionic surfactants include polyoxyethylene fatty acid esters such as propylene glycol fatty acid ester and polyethylene glycol monolaurate; polyoxyethylene alkyl ethers; polyoxyethylene sorbitol fatty acid esters; polyoxyethylene glycerin fatty acid esters; polyoxyethylene propylene glycol fatty acid esters; polyoxyethylene castor oil; polyoxyethylene hydrogenated castor oil; polyoxyethylene hydrogenated castor oil fatty acid esters; alkyl polyglucosides; polyoxyalkylene-modified silicones such as polyoxyethylene-methylpolysiloxane copolymers. Among these, one or more selected from the group consisting of polyoxyethylene fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene hydrogenated castor oil, and alkyl polyglucosides are preferred, one or more selected from the group consisting of polyoxyethylene fatty acid esters, polyoxyethylene hydrogenated castor oil, and alkyl polyglucosides are more preferred, and it is even more preferred to contain alkyl polyglucosides.

[0016] Examples of amphoteric surfactants include betaine-based amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, lauroylamidobetaine, and laurylsulfobetaine.

[0017] From the viewpoints of foamability, storage stability, and usability, the molecular weight of the polyol is preferably 70 or more, more preferably 100 or more, still more preferably 150 or more, and from the viewpoints of ease of production and foamability, it is preferably 10,000 or less, more preferably 6,000 or less, still more preferably 1,000 or less. Examples of the polyol include dihydric alcohols such as 1,2-pentanediol, 1,3-pentanediol, 1,4-pentanediol, and hexanediol; trihydric or higher alcohols such as trimethylolpropane; saccharides such as monosaccharides such as glucose and mannitol, disaccharides, and polysaccharides such as dextrin. Saccharides are preferred, one or more selected from glucose, mannitol, and dextrin are more preferred, one or more selected from mannitol and dextrin are still more preferred, and mannitol is even more preferred.

[0018] The weight average molecular weight of the water-soluble polymer is preferably 1,000 to 100,000, more preferably 2,000 to 80,000, still more preferably 5,000 to 50,000. As the water-soluble polymer, one or more selected from carboxylic acid-based synthetic polymers, water-soluble (modified) natural polymers, polyglycerin, polyethylene glycol, and polypropylene glycol are preferred. Examples of the water-soluble (modified) natural polymer include polysaccharides, which may be substituted with ionic groups, methoxy groups, or the like. Examples of the carboxylic acid-based synthetic polymer include polyacrylic acid and its salts, and copolymers of maleic acid and acrylic acid and their salts.

[0019] As the water-soluble inorganic salt, hydratable salts such as sodium carbonate, sodium sulfate, and magnesium sulfate are preferred from the viewpoint of having hygroscopicity. Sodium carbonate can be used as a coating material for alkali metal hydrogen carbonates, preferably sodium hydrogen carbonate.

[0020] 〔Non-aqueous solvent〕 The relative dielectric constant of the non-aqueous solvent at 25°C is 10 or less, preferably 5 or less, more preferably 3 or less, from the viewpoint of storage stability, and may be 1.5 or more from the viewpoint of availability. Further, the melting point of the non-aqueous solvent is preferably 0°C or lower, more preferably -10°C or lower. The dissolution amount (25°C, 1013.25 hPa) of the non-aqueous solvent in 100 g of water is preferably 1 g or less, more preferably 0.1 g or less. From the viewpoint of storage stability, the non-aqueous solvent is preferably one or more selected from hydrocarbons, esters, and silicones, and more preferably hydrocarbons. When using two or more non-aqueous solvents, the relative dielectric constant uses the weighted average value of each non-aqueous solvent.

[0021] The hydrocarbon may be linear or branched, and may be saturated or unsaturated. From the viewpoint of storage stability, the number of carbon atoms of the hydrocarbon is preferably 5 or more, more preferably 10 or more, still more preferably 20 or more, and from the viewpoint of ease of production, it is preferably 100 or less, more preferably 50 or less, still more preferably 30 or less. Examples of the hydrocarbon include aromatic hydrocarbons, alkanes, or paraffins, preferably hexane, xylene, and squalane, and more preferably squalane.

[0022] The ester preferably contains one or more selected from carboxylic acid esters of monovalent carboxylic acids and monohydric alcohols, carboxylic acid esters of monovalent carboxylic acids and polyhydric alcohols, and polyvalent carboxylic acid esters of polyvalent carboxylic acids and monohydric alcohols, and more preferably contains carboxylic acid esters of monovalent carboxylic acids and monohydric alcohols and / or carboxylic acid esters of monovalent carboxylic acids and polyhydric alcohols. Examples of the raw material alcohol for the ester include monohydric alcohols and polyhydric alcohols such as glycerin, propylene glycol, trimethylolpropane, pentaerythritol, sorbitol, and sucrose. Examples of the carboxylic acid include monovalent carboxylic acids such as fatty acids, and polyvalent carboxylic acids such as adipic acid, terephthalic acid, and trimellitic acid. The carbon number of the monohydric alcohol and the monohydric carboxylic acid is preferably 1 or more and 50 or less, more preferably 1 or more and 30 or less, still more preferably 1 or more and 16 or less, and may be saturated or unsaturated. For example, jojoba oil, argan oil, olive oil, coconut oil, etc. may be mentioned.

[0023] Examples of the silicone include dimethyl silicone (dimethylpolysiloxane), methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylhydrogenpolysiloxane, silicone resin, amino-modified silicone, alkyl-modified silicone, polyether-modified silicone, glyceryl-modified silicone, silicone wax, and the like.

[0024] [Agent A] (Carbonate particles (Carbonate A)) In the present invention, Agent A contains carbonate particles (Carbonate A). Carbonate A used in the present invention is a component that is neutralized by organic acid particles (Organic Acid B) having 2 to 6 carbon atoms contained in Agent B and generates carbon dioxide gas. Carbonate A is preferably at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates. As Carbonate A, more preferably at least one selected from sodium carbonate, potassium carbonate, sodium hydrogen carbonate, and potassium hydrogen carbonate, still more preferably at least one selected from sodium carbonate (Na2CO3) and sodium hydrogen carbonate (NaHCO3) from the viewpoints of raw material cost and foaming property, and even more preferably sodium hydrogen carbonate (NaHCO3).

[0025] When carbonate A is coated with a coating material, from the viewpoint of storage stability, the average particle size of carbonate A before coating with the coating material is preferably 1 μm or more, more preferably 10 μm or more, still more preferably 20 μm or more, and from the viewpoints of usability and foaming property, it is preferably 500 μm or less, more preferably 200 μm or less, still more preferably 150 μm or less. From these viewpoints, it is preferably 1 μm or more and 500 μm or less, more preferably 10 μm or more and 200 μm or less, still more preferably 20 μm or more and 150 μm or less. When carbonate A is not coated with a coating material, the average particle size of the carbonate A is also the same as above. When carbonate A is coated with a coating material, granulation is usually involved. From the viewpoint of storage stability, the average particle size of carbonate A after coating with the coating material is preferably 40 μm or more, more preferably 60 μm or more, still more preferably 80 μm or more, and from the viewpoints of foaming property and usability, it is preferably 2000 μm or less, more preferably 1000 μm or less, still more preferably 500 μm or less. From these viewpoints, it is 40 μm or more and 2000 μm or less, more preferably 60 μm or more and 1000 μm or less, still more preferably 80 μm or more and 500 μm or less. The average particle size of carbonate A can be measured by the method described in the examples. When it is larger than the particle size shown above, it is preferable to pre-crush it until it reaches a suitable particle size. Examples of crushers that can be used for crushing include impact crushers such as hammer crushers, impact mills such as atomizers and pin mills, and shear crushers such as flash mills. These may be a single-stage operation or a multi-stage operation of the same type or different types of crushers.

[0026] From the perspective of foamability, the content of carbonate A in Agent A is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, and even more preferably 80% by mass or more. Since it contains a coating material and has excellent storage stability, it is 100% by mass or less, preferably 97% by mass or less, more preferably 95% by mass or less, and still more preferably 93% by mass or less. From the perspective of foamability, the content of carbonate A in Agent A is preferably 50% by mass or more and 100% by mass or less, more preferably 60% by mass or more and 100% by mass or less, still more preferably 70% by mass or more and 100% by mass or less, and even more preferably 80% by mass or more and 100% by mass or less. From the perspective of the occurrence of foamability and storage stability, it is preferably 50% by mass or more and 97% by mass or less, more preferably 70% by mass or more and 95% by mass or less, and still more preferably 80% by mass or more and 93% by mass or less.

[0027] When Agent A contains a coating material (that is, when carbonate A is coated with a coating material), from the perspective of foamability, the content of the coating material in Agent A is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, and even more preferably 20% by mass or less. Since it contains a coating material and has excellent storage stability, it is preferably 3% by mass or more, more preferably 5% by mass or more, and still more preferably 7% by mass or more. From the perspective of the occurrence of foamability and storage stability, the content of the coating material in Agent A is preferably 3% by mass or more and 50% by mass or less, more preferably 5% by mass or more and 30% by mass or less, and still more preferably 7% by mass or more and 20% by mass or less. Also, the mass ratio of the coating material to carbonate A in Agent A (coating material / carbonate A) is preferably 0.03 or more, more preferably 0.05 or more, and still more preferably 0.07 or more from the perspective of storage stability. From the perspective of foamability, it is preferably 1 or less, more preferably 0.5 or less, and still more preferably 0.3 or less. It is preferably 0.03 or more and 1 or less, more preferably 0.05 or more and 0.5 or less, and still more preferably 0.07 or more and 0.3 or less.

[0028] 〔Agent B〕 (Organic acid particles having 2 to 6 carbon atoms (organic acid B)) In the present invention, Agent B contains organic acid particles having 2 to 6 carbon atoms (organic acid B). The organic acid B used in the present invention is a component for neutralizing carbonate particles (carbonate A) and generating carbon dioxide gas (carbon dioxide). The organic acid B is not particularly limited as long as it is an organic acid having 2 to 6 carbon atoms, but one or more selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, citric acid, and pyrrolidone carboxylic acid are preferable. Among these, a compound having two or more carboxy groups is preferable, and it is more preferable to use at least one selected from fumaric acid, succinic acid, malic acid, and citric acid, and malic acid is even more preferable. These organic acids B may be used alone or in an appropriate combination of two or more.

[0029] When the organic acid B is coated with a coating material, the average particle size of the organic acid B before coating with the coating material is preferably 1 μm or more, more preferably 30 μm or more, still more preferably 50 μm or more from the viewpoint of storage stability, and preferably 1000 μm or less, more preferably 800 μm or less, still more preferably 500 μm or less from the viewpoints of usability and foaming property. From these viewpoints, it is preferably 1 μm or more and 1000 μm or less, more preferably 20 μm or more and 800 μm or less, still more preferably 50 μm or more and 500 μm or less. Also, when the organic acid B is not coated with a coating material, the average particle size of the organic acid B is the same as above. Also, when the organic acid B is coated with a coating material, granulation is usually involved, and the average particle size of the organic acid B after coating with the coating material is preferably 50 μm or more, more preferably 100 μm or more, still more preferably 200 μm or more from the viewpoint of storage stability, and preferably 3000 μm or less, more preferably 2000 μm or less, still more preferably 1000 μm or less from the viewpoints of foaming property and usability. From these viewpoints, it is 50 μm or more and 3000 μm or less, more preferably 100 μm or more and 2000 μm or less, still more preferably 200 μm or more and 1000 μm or less. The average particle size of the organic acid B can be measured by the method described in the examples. When it is larger than the particle size shown above, it is preferable to pre-crush it until it reaches a suitable particle size. Examples of crushers that can be used for crushing include impact crushers such as hammer crushers, impact mills such as atomizers and pin mills, and shear crushers such as flash mills. These can be a one-stage operation or a multi-stage operation of the same type or different types of crushers.

[0030] From the viewpoint of foamability, the content of organic acid B in agent B is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, and even more preferably 75% by mass or more. From the viewpoint of storage stability containing a coating material, it is 100% by mass or less, preferably 96% by mass or less, more preferably 95% by mass or less, and still more preferably 93% by mass or less. And, from the viewpoint of foamability, the content of organic acid B in agent B is preferably 50% by mass or more and 100% by mass or less, more preferably 60% by mass or more and 100% by mass or less, still more preferably 70% by mass or more and 100% by mass or less, and even more preferably 75% by mass or more and 100% by mass or less. From the viewpoints of foamability and storage stability, it is preferably 60% by mass or more and 96% by mass or less, more preferably 70% by mass or more and 95% by mass or less, and still more preferably 75% by mass or more and 93% by mass or less.

[0031] When agent B contains a coating material (that is, when organic acid B is coated with a coating material), the content of the coating material in agent B is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, and even more preferably 20% by mass or less from the viewpoint of foamability. From the viewpoint of containing a coating material and excellent storage stability, it is preferably 3% by mass or more, more preferably 5% by mass or more, and still more preferably 7% by mass or more. The content of the coating material in agent B is preferably 3% by mass or more and 50% by mass or less, more preferably 5% by mass or more and 30% by mass or less, and still more preferably 7% by mass or more and 20% by mass or less from the viewpoints of the generation of foamability and storage stability. The mass ratio of the coating material to the organic acid B in Agent B (coating material / organic acid B) is preferably 0.03 or more, more preferably 0.05 or more, still more preferably 0.07 or more from the viewpoint of storage stability, and preferably 1 or less, more preferably 0.5 or less, still more preferably 0.3 or less from the viewpoint of foaming property, and is preferably 0.03 or more and 1 or less, more preferably 0.05 or more and 0.5 or less, still more preferably 0.07 or more and 0.3 or less.

[0032] In the present invention, other components may be added to Agent A and Agent B in addition to the above components. Examples of other components include fragrances; antioxidants; antibacterial and antifungal agents, bactericides; pigments; disintegration aids; anti-fading agents; pH adjusters, etc.

[0033] 〔Content of each composition in the foaming composition〕 The content of Agent A in the foaming agent composition of the present invention is preferably 1% by mass or more, more preferably 5% by mass or more, still more preferably 10% by mass or more from the viewpoint of foaming property, and preferably 50% by mass or less, more preferably 45% by mass or less, still more preferably 40% by mass or less from the viewpoints of storage stability and containing Agent B. Also, the content of Agent B in the foaming agent composition of the present invention is preferably 1% by mass or more, more preferably 5% by mass or more, still more preferably 10% by mass or more from the viewpoint of foaming property, and preferably 50% by mass or less, more preferably 45% by mass or less, still more preferably 40% by mass or less from the viewpoints of storage stability and containing Agent A. Also, the content of the non-aqueous solvent in the foaming agent composition of the present invention is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 20% by mass or more from the viewpoints of storage stability and usability, and preferably 98% by mass or less, more preferably 90% by mass or less, still more preferably 80% by mass or less from the viewpoints of containing Agent A and Agent B and foaming. Therefore, from the viewpoints of foaming property, storage stability and usability, in the foaming agent composition of the present invention, preferably, the content of Agent A is 1% by mass or more and 50% by mass or less, the content of Agent B is 1% by mass or more and 50% by mass or less, and the content of the non-aqueous solvent is 5% by mass or more and 98% by mass or less. More preferably, the content of the agent A is 5% by mass or more and 45% by mass or less, the content of the agent B is 5% by mass or more and 45% by mass or less, and the content of the non-aqueous solvent is 10% by mass or more and 90% by mass or less. Even more preferably, the content of the agent A is 10% by mass or more and 40% by mass or less, the content of the agent B is 10% by mass or more and 40% by mass or less, and the content of the non-aqueous solvent is 20% by mass or more and 80% by mass or less.

[0034] The foaming agent composition of the present invention may appropriately contain other components as necessary. Examples of the other components include thickeners, moisture absorbents, and the like. Examples of the thickener include dextrin palmitate, fumed silica (anhydrous silicic acid), and the like. As the thickener, one or more selected from dextrin palmitate and fumed silica are preferable, and fumed silica is more preferable. Examples of the moisture absorbent include magnesium oxide, sodium carbonate, sodium sulfate, potassium sulfate, magnesium sulfate, and the like. Among these, as the moisture absorbent, one or more selected from magnesium oxide and sodium carbonate are preferable, and magnesium oxide is more preferable.

[0035] <Manufacturing method> [Manufacture of agent A or agent B] In the present invention, when at least a part of the surface of the carbonate A or the organic acid B is coated with a coating material, the agent A or the agent B can be obtained, for example, by fluidized bed coating. The manufacturing method of the agent A or the agent B in the present invention preferably contains at least the following steps 1-1 to 1-2. Step 1-1: A step of mixing a coating material having a solubility of 5 g or more in 100 g of water with water to prepare an aqueous coating material solution. Step 1-2: A step of coating and granulating the carbonate A or the organic acid B while mixing the aqueous coating material solution in a fluidized bed to obtain the agent A or the agent B.

[0036] In step 1-1, the method for preparing the aqueous coating material solution is not particularly limited, and a known method can be used.

[0037] In Step 1-2, when coating and granulating in a fluidized bed while mixing the coating material aqueous solution with carbonate A or organic acid B, it is preferable to use, for example, a fluidized bed granulator.

[0038] Also, from the viewpoint of making the average particle diameter of the obtained Agent A or Agent B fall within the above range, it is preferable to have a step of pulverizing carbonate A or organic acid B before Step 1-1 or 1-2, if necessary.

[0039] [Production of Foaming Agent Composition] The foaming agent composition can be obtained by mixing the above-described Agent A, Agent B, and non-aqueous solvent, and, if necessary, other components such as a thickener and a moisture absorbent. The method of mixing the respective components is not particularly limited, and known methods can be used.

[0040] [Applications, etc.] The foaming agent composition of the present invention is used by mixing with water and causing foaming. Since the foaming agent composition of the present invention has the above characteristics, it can efficiently generate carbon dioxide by mixing with water, and thus has excellent foaming properties. For the water to be mixed, for example, a binder, a wetting agent, a surfactant, a preservative, a fragrance, a medicinal ingredient, a coloring agent, etc. can be appropriately blended. Examples of the binder include sodium carboxymethyl cellulose, sodium polyacrylate, hydroxyethyl cellulose, thickening silica, montmorillonite, carrageenan, sodium alginate, guar gum, pectin, and the like. Examples of the wetting agent include propylene glycol, 1,3-butylene glycol, ethylene glycol, polyethylene glycol, polypropylene glycol, maltose, lactose, and the like. Examples of the surfactant include alkyl sulfates such as sodium lauryl sulfate, salts of acyl amino acids such as sodium acyl glutamate and sodium acyl sarcosinate, salts of alkyl phosphates such as sodium lauryl phosphate, sucrose fatty acid esters, sorbitan fatty acid esters, polyoxyethylene fatty acid esters, and the like. Examples of the preservative include parabens, methyl p - hydroxybenzoate, ethyl p - hydroxybenzoate, propyl p - hydroxybenzoate, butyl p - hydroxybenzoate, sodium benzoate, and the like. Examples of the fragrance include menthol and natural products containing menthol; essential oils and extracts of basil, camphor, caraway, cardamom, coriander, geranium, ginger, laurel, lavender, mace, nutmeg, pepper, rose, rosemary, thyme, ylang - ylang, jasmine, vanilla, hyssop, lavandin, orris, carrot seed, davana, elemi, osmanthus; borneol and its derivatives; heliotropin; α -, β -, γ -, δ - ionone and their derivatives; vanillin, ethyl vanillin, maltol, and ethyl maltol, and the like. The above - mentioned components can be used alone or in combination of two or more.

[0041] Since the foaming agent composition of the present invention has the above - mentioned characteristics, it is excellent in foamability, storage stability, and usability. Therefore, the foaming agent composition of the present invention can be suitably used as a cosmetic. Examples of the cosmetic include, for example, hair cosmetics and skin cleansers. Specific examples of the hair cosmetics include hair shampoos, hair rinses, treatments, hair conditioners, and the like. Specific examples of the skin cleansers include body soaps, hand washes, face washes, and makeup removers. The foaming agent composition of the present invention can also be used in a two - component type container, which is premised on mixing two types of contents at the time of use. Examples of the two - component type container include pump types, tube types, and the like. Specifically, the composition of the present invention is placed on one side of the two - component type container, and an aqueous phase component mainly composed of water is placed on the other side. By pumping pressure or extrusion of the tube, the two types of components are simultaneously discharged and mixed by hand or the like to generate foam.

[0042] [Method for generating carbon dioxide] The method for generating carbon dioxide according to the present invention is to mix the above-described foaming agent composition of the present invention with water. With respect to 1 part by mass of the foaming agent composition of the present invention, it is preferable to mix water in an amount of preferably 1 part by mass or more, more preferably 1.5 parts by mass or more, and still more preferably 2 parts by mass or more. In the method for generating carbon dioxide according to the present invention, the mixing mass ratio (foaming agent composition / water) of the foaming agent composition and water is preferably 0.05 or more and 1.00 or less, more preferably 0.10 or more and 0.80 or less, and still more preferably 0.15 or more and 0.50 or less from the viewpoint of the amount of carbon dioxide generated. Also, it is preferable to stir during mixing.

[0043] The present invention further discloses the following [1] to

[39] . [1] An agent A containing carbonate particles, an agent B containing organic acid particles having 2 to 6 carbon atoms, and a non-aqueous solvent, wherein the relative dielectric constant of the non-aqueous solvent at 25°C is 10 or less, and at least one of the agent A and the agent B contains a coating material having a solubility in 100 g of water of 5 g or more, and at least a part of the surface of at least one of the carbonate particles and the organic acid particles is coated with the coating material. A foaming agent composition. [2] The foaming agent according to [1], wherein the relative dielectric constant of the non-aqueous solvent at 25°C is 5 or less. [3] The foaming agent composition according to [1] or [2], wherein the relative dielectric constant of the non-aqueous solvent at 25°C is 3 or less. [4] The foaming agent composition according to any one of [1] to [3], wherein the non-aqueous solvent is one or more selected from hydrocarbons, esters, and silicones. [5] The foaming agent composition according to [4], wherein the hydrocarbon is one or more selected from aromatic hydrocarbons, alkanes, and paraffins. [6] The foaming agent composition according to any one of [1] to [5], wherein at least one of the agent A and the agent B is granulated with the coating material. [7] The foaming agent composition according to any one of [1] to [6], wherein the solubility of the coating material in 100 g of water (25°C, 1013.25 hPa) is 10 g or more. 〔8〕The foaming agent composition according to any one of 〔1〕~〔7〕, wherein the amount of the coating material dissolved in 100 g of water (25 °C, 1013.25 hPa) is 20 g or more. 〔9〕The foaming agent composition according to any one of 〔1〕~〔8〕, wherein the coating material is at least one selected from the group consisting of a surfactant, a polyol, a water-soluble polymer, and a water-soluble inorganic salt. 〔10〕The foaming agent composition according to any one of 〔1〕~〔9〕, wherein the carbonate particles are at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates. 〔11〕The foaming agent composition according to any one of 〔1〕~〔10〕, wherein the carbonate particles are at least one selected from sodium carbonate, potassium carbonate, sodium hydrogen carbonate, and potassium hydrogen carbonate. 〔12〕The foaming agent composition according to any one of 〔1〕~〔11〕, wherein the organic acid particles are at least one selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, citric acid, and pyrrolidone carboxylic acid. 〔13〕The foaming agent composition according to any one of 〔1〕~〔12〕, wherein the average particle diameter of the carbonate particles before being coated with the coating material, or the average particle diameter of the carbonate particles when not coated with the coating material, is 1 μm or more and 500 μm or less. 〔14〕The foaming agent composition according to any one of 〔1〕~〔13〕, wherein the average particle diameter of the carbonate particles before being coated with the coating material, or the average particle diameter of the carbonate particles when not coated with the coating material, is 10 μm or more and 200 μm or less. 〔15〕The foaming agent composition according to any one of 〔1〕~〔14〕, wherein the average particle diameter of the carbonate particles before being coated with the coating material, or the average particle diameter of the carbonate particles when not coated with the coating material, is 20 μm or more and 150 μm or less. 〔16〕The foaming agent composition according to any one of 〔1〕~〔15〕, wherein the average particle diameter of the carbonate particles after being coated with the coating material is 40 μm or more and 2000 μm or less. 〔17〕The foaming agent composition according to any one of 〔1〕~〔16〕, wherein the average particle diameter of the carbonate particles after being coated with the coating material is 60 μm or more and 1000 μm or less. 〔18〕The average particle diameter of the carbonate particles after coating with the coating material is 80 μm or more and 500 μm or less, and the foaming agent composition according to any one of 〔1〕 to 〔17〕. 〔19〕The mass ratio of the coating material to the carbonate particles in Agent A (coating material / carbonate particles) is 0.03 or more and 1 or less, and the foaming agent composition according to any one of 〔1〕 to 〔18〕. 〔20〕The mass ratio of the coating material to the carbonate particles in Agent A (coating material / carbonate particles) is 0.05 or more and 0.5 or less, and the foaming agent composition according to any one of 〔1〕 to 〔19〕. 〔21〕The mass ratio of the coating material to the carbonate particles in Agent A (coating material / carbonate particles) is 0.07 or more and 0.3 or less, and the foaming agent composition according to any one of 〔1〕 to 〔20〕. 〔22〕The average particle diameter of the organic acid particles before coating with the coating material, or the average particle diameter of the organic acid particles when not coated with the coating material is 1 μm or more and 1000 μm or less, and the foaming agent composition according to any one of 〔1〕 to 〔21〕. 〔23〕The average particle diameter of the organic acid particles before coating with the coating material, or the average particle diameter of the organic acid particles when not coated with the coating material is 20 μm or more and 800 μm or less, and the foaming agent composition according to any one of 〔1〕 to 〔22〕. 〔24〕The average particle diameter of the organic acid particles before coating with the coating material, or the average particle diameter of the organic acid particles when not coated with the coating material is 50 μm or more and 500 μm or less, and the multi-agent type foaming agent composition according to any one of 〔1〕 to 〔23〕. 〔25〕The average particle diameter of the organic acid particles after coating with the coating material is 50 μm or more and 3000 μm or less, and the foaming agent composition according to any one of 〔1〕 to 〔24〕. 〔26〕The average particle diameter of the organic acid particles after coating with the coating material is 100 μm or more and 2000 μm or less, and the foaming agent composition according to any one of 〔1〕 to 〔25〕. 〔27〕The average particle diameter of the organic acid particles after coating with the coating material is 200 μm or more and 1000 μm or less, and the foaming agent composition according to any one of 〔1〕 to 〔26〕. 〔28〕The mass ratio of the coating material to the organic acid particles in Agent B (coating material / organic acid particles) is 0.03 or more and 1 or less, and the foaming agent composition according to any one of 〔1〕 to 〔27〕. The foaming agent composition according to any one of [1] to

[28] , wherein the mass ratio of the coating material to the organic acid particles in Agent B (coating material / organic acid particles) is 0.05 or more and 0.5 or less. The foaming agent composition according to any one of [1] to

[29] , wherein the mass ratio of the coating material to the organic acid particles in Agent B (coating material / organic acid particles) is 0.07 or more and 0.3 or less. The foaming agent composition according to any one of [1] to

[30] , wherein the content of Agent A is 1% by mass or more and 50% by mass or less, the content of Agent B is 1% by mass or more and 50% by mass or less, and the content of the non-aqueous solvent is 5% by mass or more and 98% by mass or less. The foaming agent composition according to any one of [1] to

[31] , wherein the content of Agent A is 5% by mass or more and 45% by mass or less, the content of Agent B is 5% by mass or more and 45% by mass or less, and the content of the non-aqueous solvent is 10% by mass or more and 90% by mass or less. The foaming agent composition according to any one of [1] to

[32] , wherein the content of Agent A is 10% by mass or more and 40% by mass or less, the content of Agent B is 10% by mass or more and 40% by mass or less, and the content of the non-aqueous solvent is 20% by mass or more and 80% by mass or more. The foaming agent composition according to any one of [1] to

[33] , wherein the molar equivalent ratio of the carbonate particles in Agent A to the organic acid particles in Agent B (carbonate / organic acid) is 0.5 or more and 2 or less. The foaming agent composition according to any one of [1] to

[34] , wherein the molar equivalent ratio of the carbonate particles in Agent A to the organic acid particles in Agent B (carbonate / organic acid) is 0.8 or more and 1.2 or less. The foaming agent composition according to any one of [1] to

[35] , wherein Agent A and Agent B are dispersed in the non-aqueous solvent. The foaming agent composition according to any one of [1] to

[36] , which is used by mixing with water and foaming. The foaming agent composition according to any one of [1] to

[37] , which is for cosmetics. A method for generating carbon dioxide, which comprises mixing the foaming agent composition according to any one of [1] to

[38] with water.

Examples

[0044] In the following examples and comparative examples, “%” means “mass %” unless otherwise specified. The measurement of each physical property value was carried out by the following method. Note that the numerical values of the compounding composition in the table are the values of the solid content.

[0045] [Measurement and Evaluation Methods] <Average Particle Size of Carbonate and Organic Acid> The average particle size of the carbonate and organic acid in the uncoated state was measured by the laser diffraction method. Using a laser diffraction / scattering particle size distribution measuring device LA-920 (manufactured by Horiba, Ltd.), the median diameter (D 50 ) measured after dispersion in ethanol was taken as the average particle size. The measurement temperature was 25 °C and the relative refractive index was 1.2. The average particle size of the carbonate and organic acid after coating was calculated from the mass distribution according to the size of each sieve mesh after vibrating 100 g of particles for 5 minutes using a standard sieve (mesh opening: 45 to 2000 μm) specified in JIS K 8801. Specifically, after vibrating for 5 minutes using sieves of 2000, 1400, 1000, 710, 500, 355, 250, 180, 125, 90, 63, 45 μm specified in JIS Z 8801-1 (established on May 20, 2000, last revised on November 20, 2006), the 50% average diameter was calculated for the undersize mass distribution by the sieving method and taken as the average particle size. Using the sieves described above, they were stacked in order from the sieve with the smallest mesh opening on the receiving tray. 50 g of granules were added from above the top 2000 μm sieve, covered, and attached to a rotary tap type sieve shaker (manufactured by Hirate Seisakusho Co., Ltd., tapping 156 times / min, rolling: 290 times / min). After vibrating for 5 minutes, the mass of the granules remaining on each sieve and the receiving tray was measured, and the mass ratio (%) of the granules on each sieve was calculated. Starting from the receiving tray, the mass ratios of the granules on the sieves with smaller mesh openings were integrated in turn, and the particle size at which the total became 50% was taken as the average particle size.

[0046] <Evaluation Method of Foaming Property> A mixture was prepared by dissolving 4.04 g of ion-exchanged water, 5.92 g of Emar 227 PH-11 (W), and 0.04 g of Kelden in a 200 mL graduated cylinder. While stirring at 600 r / min using a magnetic stir bar (major axis 40 mm, minor axis 15 mm), 1.5 g of the foaming agent compositions of the examples and comparative examples were added. The foaming volume (at room temperature of 25 °C) was calculated using the following formula from the volumes at 1 minute and 3 minutes. The greater the foaming volume, the better the foamability. Foaming volume (mL) = (Volume at 1 minute or 3 minutes [mL]) - 10

[0047] <Evaluation method for storage stability> (Residual amount conversion rate (%) after 1 year (25 °C)) After charging 60 g of the foaming agent compositions of the examples and comparative examples into a screw tube (manufactured by Maruemu Co., Ltd., No. 8, capacity 110 mL), it was left standing at 25 °C and a relative humidity of 40% without a lid. At predetermined times, the mass of the screw tube (including the contents of the screw tube) was measured, and the mass of the screw tube (including the contents of the beaker) was measured more than once every 12 hours for 7 days or more. The estimated residual amount after 1 year at 25 °C was calculated from the following formula. The greater the estimated residual amount after 1 year, the better the storage stability. Estimated residual amount after 1 year [%] = (1 - (Average mass change rate per day for 7 days [g / day]) / Theoretical carbon dioxide generation amount [g] × 365 [days]) × 100 Also, the theoretical carbon dioxide generation amount in the above calculation formula is as follows. Theoretical carbon dioxide generation amount [g] = (Amount of sodium bicarbonate charged [g] / 84 [g / mol]) × 44 [g / mol] (Residual amount conversion rate (%) after 1 month (40 °C)) After charging 60 g of the foaming agent compositions of the examples and comparative examples into a screw tube (manufactured by Maruemu Co., Ltd., No. 8, capacity 110 mL), it was left standing at 40 °C and a relative humidity of 40% without a lid. The mass of the screw tube (including the contents of the screw tube) was measured at a specified time, and the mass of the screw tube (including the contents of the beaker) was measured more than once every 24 hours for 7 days or more. The estimated remaining amount after 1 month at 40°C was calculated using the following formula. The larger the estimated remaining amount after 1 month, the better the storage stability. Estimated remaining amount after 1 month [%] = (1 - (Average mass change rate per day for 7 days [g / day]) / Theoretical carbon dioxide generation amount [g] × 30 [days]) × 100 Also, the theoretical carbon dioxide generation amount in the above formula is as follows. Theoretical carbon dioxide generation amount [g] = (Amount of sodium bicarbonate charged [g] / 84 [g / mol]) × 44 [g / mol]

[0048] <Method for evaluating usability> For 3 professional panelists, a mixture prepared by dissolving 0.81 g of ion-exchanged water, 1.18 g of Emal 227PH-11(W), and 0.01 g of Kelden to 0.3 g of the foaming agent composition of the examples and comparative examples was charged, mixed for 10 seconds using a glass stirring rod, then placed on the back of the hand and massaged, and the usability was evaluated according to the following criteria. A: No granular feeling is felt at all B: Hardly any granular feeling is felt C: A strong granular feeling is felt

[0049] Regarding Emal 227PH-11(W) and Kelden used in the method for evaluating foamability and the method for evaluating usability, they are as follows. · Emal 227PH-11(W): Manufactured by Kao Corporation, Sodium polyoxyethylene lauryl ether sulfate, Solid content 27% · Kelden: Manufactured by Okahata Kogyo Co., Ltd., Xanthan gum

[0050] In this production example and the comparative production example, the following raw materials were used. The dissolution amount means the dissolution amount (g) at 25°C with respect to 100 g of water. The relative dielectric constant means the relative dielectric constant at 25°C. (Agent A: Carbonate A) · Sodium bicarbonate: Manufactured by Tosoh Corporation, Sodium bicarbonate P, average particle size 114 μm (Agent B: Organic acid B) · Malic acid: Manufactured by Fuso Chemical Industry Co., Ltd., Fuso M, average particle size 446 μm (Coating material) · Lauryl glucoside: Manufactured by Kao Corporation, Myadol 12, solid content 40%, solubility 100 or more · Mannitol: Manufactured by FUJIFILM Wako Pure Chemical Corporation, D-mannitol, solubility 17 · Dextrin: Manufactured by Nisshin Chemical Co., Ltd., Dextrin CZRM-X, solubility 100 or more · Sodium carbonate: Manufactured by FUJIFILM Wako Pure Chemical Corporation, Sodium carbonate (soda ash), solubility 17 (Coating material for comparative example) · Behenyl alcohol: Kao Corporation, Calcohol 220-80, solubility 0.1 or less (Non-aqueous solvent) · Squalane: Manufactured by Nippon Surfactant Co., Ltd., Sugarsqualane, relative permittivity 2.1 · Silicone: Manufactured by Shin-Etsu Chemical Co., Ltd., KF-96A-100cs (methylpolysiloxane), relative permittivity 2.76 · Jojoba oil: Manufactured by Koei Kogyo Co., Ltd., Refined jojoba oil (ester), relative permittivity 2.76 · Propylene glycol: Manufactured by FUJIFILM Wako Pure Chemical Corporation, relative permittivity 29.7 (Thickener) · Dextrin palmitate: Manufactured by Chiba Flour Milling Co., Ltd., Leopal KL2 · Fumed silica: Manufactured by Nippon Aerosil Co., Ltd., Aerosil 300 (Humectant) · Magnesium oxide: Manufactured by Kyowa Chemical Industry Co., Ltd., Light 100 · Sodium carbonate: Manufactured by FUJIFILM Wako Pure Chemical Corporation, Sodium carbonate (soda ash)

[0051] Manufacturing example of Agent A (Manufacturing example 1: Fluidized bed coating (granulation)) While operating a crusher (manufactured by Dalton Co., Ltd., sample mill KII-W) with a screen hole diameter of 0.7 mm installed at the discharge port at 12,390 r.p.m., sodium bicarbonate was supplied at a rate of 1000 g / min to obtain ground sodium bicarbonate with a particle size of 28 μm. 75 g of Middle 12 (40% aqueous solution of lauryl glucoside) and 125 g of ion-exchanged water were mixed at room temperature for 30 minutes to prepare an aqueous coating material solution (solid content: 30.0 g). 300 g of the ground sodium bicarbonate was charged into a fluidized bed granulator (manufactured by Powrex Co., Ltd., FD-LAB-1), and while granulating by adding 200 g of the previously prepared aqueous coating material solution at a rate of 15 g / min under the conditions of an air volume of 80 m 3 / hr and an intake air temperature of 100°C, a granulated product with a particle size of 265 μm was obtained.

[0052] (Production Example 2: Fluidized Bed Coating (Granulation)) A granulated product with a particle size of 406 μm was obtained in the same manner as in Production Example 1, except that the grinding treatment of sodium bicarbonate was not performed in advance.

[0053] (Production Example 3: Fluidized Bed Coating (Granulation)) A granulated product with a particle size of 251 μm was obtained in the same manner as in Production Example 1, except that the grinding treatment of sodium bicarbonate was not performed in advance and an aqueous coating material solution (solid content: 30.0 g) prepared by mixing 30.0 g of mannitol and 170 g of ion-exchanged water at room temperature for 30 minutes was used.

[0054] (Production Example 4: Fluidized Bed Coating (Granulation)) A granulated product with a particle size of 181 μm was obtained in the same manner as in Production Example 1, except that an aqueous coating material solution (solid content: 45.0 g) prepared by mixing 75 g of Middle 12 (40% aqueous solution of lauryl glucoside), 15 g of sodium carbonate, and 125 g of ion-exchanged water at room temperature for 30 minutes was used.

[0055] (Production Example 5: Fluidized Bed Coating (Granulation)) A granulated product with a particle size of 98 μm was obtained in the same manner as in Production Example 1, except that an aqueous coating material solution (solid content: 30.0 g) prepared by mixing 30.0 g of dextrin and 170 g of ion-exchanged water at room temperature for 30 minutes was used.

[0056] (Production Example 6: Fluidized Bed Coating (Granulation)) A coating material aqueous solution (solid content: 45.0 g) was prepared by mixing 30.0 g of mannitol, 15 g of sodium carbonate, and 170 g of ion-exchanged water at room temperature for 30 minutes. A granule with a size of 175 μm was obtained in the same manner as in Production Example 1, except that the above-prepared coating material aqueous solution was used.

[0057] (Production Example 7: Crushing Treatment of Sodium Bicarbonate) While operating a crusher (Sample Mill KII-W manufactured by Dalton Co., Ltd.) with a screen pore diameter of 0.7 mm installed at the discharge port under the condition of 12,390 r.p.m., sodium bicarbonate was supplied at a rate of 1000 g / min to obtain crushed sodium bicarbonate with a size of 28 μm.

[0058] (Production Example 8: Melt Coating (Granulation)) 300 g of sodium bicarbonate was mixed in a 2 L high-speed mixer (LFS-2 manufactured by Earth Technica Co., Ltd., agitator rotation speed: 600 r.p.m. / chopper rotation: 1500 r.p.m. / jacket warm water temperature: 80°C). After confirming that the powder temperature reached 65°C or higher after 1 minute of mixing, 30.0 g of behenyl alcohol was added and mixed for 2 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain granules with a size of 151 μm.

[0059] Production Example of Agent B (Production Example 9: Fluidized Bed Coating (Granulation)) While operating a crusher (Sample Mill KII-W manufactured by Dalton Co., Ltd.) with a screen pore diameter of 0.7 mm installed at the discharge port under the condition of 12,390 r.p.m., malic acid was supplied at a rate of 1000 g / min to obtain crushed malic acid with a size of 63 μm. 75 g of Mydol 12 (40% aqueous solution of lauryl glucoside) and 125 g of ion-exchanged water were mixed at room temperature for 30 minutes to prepare a coating material aqueous solution (solid content: 30.0 g). 300 g of the crushed malic acid was charged into a fluidized bed granulator (FD-LAB-1 manufactured by Powrex Co., Ltd.). While granulating under the conditions of an air volume of 80 m 3 / hr and an intake air temperature of 100°C, 200 g of the previously prepared coating material aqueous solution was added at a rate of 15 g / min to obtain granules with a size of 307 μm.

[0060] (Production Example 10: Fluidized Bed Coating (Granulation)) An 824-μm granule was obtained in the same manner as in Production Example 9, except that the malic acid was not pre-ground.

[0061] (Production Example 11: Fluidized Bed Coating (Granulation)) A 450-μm granule was obtained in the same manner as in Production Example 9, except that the malic acid was not pre-ground and an aqueous coating material solution (30.0 g of solid content) prepared by mixing 30.0 g of mannitol and 170 g of ion-exchanged water at room temperature for 30 minutes was used.

[0062] (Production Example 12: Grinding Treatment of Malic Acid) While operating a grinder (manufactured by Dalton Co., Ltd., Sample Mill KII-W) with a screen pore diameter of 0.7 mm installed at the discharge port at 12,390 r.p.m., malic acid was supplied at a rate of 1000 g / min to obtain ground malic acid with a particle size of 63 μm.

[0063] (Production Example 13: Melt Coating (Granulation)) In a 2-L high-speed mixer (manufactured by Earth Technica Co., Ltd.: LFS-2, agitator rotation speed 600 r.p.m. / chopper rotation 1500 r.p.m. / jacket warm water temperature 80 °C), 300 g of malic acid was mixed for 1 minute, and after confirming that the powder temperature reached 65 °C or higher, 30.0 g of behenyl alcohol was added and mixed for 2 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25 °C to obtain a granule with a particle size of 282 μm. Table 1 shows the compositions and combinations of Agent A and Agent B used in the examples and comparative examples.

[0064] Example 1 In advance, 500 g of squalane and 25 g of dextrin palmitate were placed in a 1-L beaker and mixed at 80 °C for 1 hour or more using a stirrer (stirring bar 5 cm: rotation speed 800 r.p.m.). A foaming agent composition was prepared by mixing Agent A and Agent B obtained in each production example, a non-aqueous solvent, a thickener, and a hygroscopic agent at room temperature for 1 minute with the composition shown in Table 2. Using the obtained foaming agent composition, the foaming property, storage stability, and usability were evaluated according to the aforementioned method. The results are shown in Table 2.

[0065] Examples 2 to 9, Comparative Examples 1 to 4 A foaming agent composition was prepared in the same manner as in Example 1, except that the composition shown in Table 2 was changed. Using the obtained foaming agent composition, the foamability, storage stability, and usability were evaluated according to the above-described method. The results are shown in Table 2. Note that Example 4 is an example in which Production Example 2 was used as Agent A and malic acid was used as Agent B without being pulverized or coated. Example 5 is an example in which sodium bicarbonate was used as Agent A without being pulverized or coated and Production Example 10 was used as Agent B. Examples 6, 7, and 9 are examples in which Production Example 1 was used as Agent A and malic acid was used as Agent B without being pulverized or coated. Example 8 is an example in which Production Example 4 was used as Agent A and malic acid was used as Agent B without being pulverized or coated. Comparative Example 1 is a comparative example in which sodium bicarbonate was used as Agent A without being pulverized or coated and malic acid was used as Agent B without being pulverized or coated. Comparative Example 2 is a comparative example in which only pulverized sodium bicarbonate of Production Example 7 was used as Agent A and only pulverized malic acid of Production Example 12 was used as Agent B. Comparative Example 3 is a comparative example in which the one subjected to melt coating of Production Example 8 was used as Agent A and the one subjected to melt coating of Production Example 13 was used as Agent B. Comparative Example 4 is a comparative example in which the non-aqueous solvent of the foaming agent composition was changed to propylene glycol and otherwise the same as in Example 2.

[0066] Examples 10 to 14 In advance, 500 g of squalane and 25 g of Aerosil 300 were mixed at 25°C for 10 minutes under stirring at 12,000 r.p.m. using a homomixer stirring blade manufactured by Primix Corporation. Thereafter, a foaming agent composition was prepared in the same manner as in Example 1, except that the composition shown in Table 2 was changed. Using the obtained foaming agent composition, the foamability, storage stability, and usability were evaluated according to the above-described method. The results are shown in Table 2. In Examples 10, 12, and 13, Production Example 1 was used as Agent A, and malic acid was used as Agent B without being pulverized or coated. Example 11 is an example in which Production Example 5 was used as Agent A, and malic acid was used as Agent B without being pulverized or coated. Example 14 is an example in which Production Example 6 was used as Agent A, and malic acid was used as Agent B without being pulverized or coated.

[0067]

Table 1

[0068]

Table 2

[0069] From Table 2, it is confirmed that the foaming agent compositions of Examples 1 to 14, which are one embodiment of the present invention, are excellently balanced in all of foamability, storage stability, and usability as compared with the foaming agent compositions of Comparative Examples 1 to 4.

Industrial Applicability

[0070] According to the present invention, there are provided a foaming agent composition excellent in foamability, storage stability, and usability, and a method for generating carbon dioxide using the foaming agent composition. The foaming agent composition of the present invention can be suitably used for cosmetics.

Claims

1. The composition includes an agent A including carbonate particles, an agent B including organic acid particles having a carbon number of 2 to 6, and a non-aqueous solvent, The non-aqueous solvent has a relative dielectric constant of 10 or less at 25° C., At least one of the agent A and the agent B contains a coating material having a solubility of 5 g or more in 100 g of water, At least one of the carbonate particles and the organic acid particles has at least a part of a surface thereof covered with the coating material.

2. The blowing agent composition according to claim 1 , wherein the non-aqueous solvent is at least one selected from the group consisting of hydrocarbons, esters, and silicones.

3. The foaming agent composition according to claim 1 or 2, wherein at least one of the component A and the component B is granulated with the coating material.

4. The blowing agent composition according to claim 1 or 2, wherein the component A and the component B are dispersed in the non-aqueous solvent.

5. The foaming agent composition according to claim 1 or 2, wherein the coating material is at least one selected from the group consisting of a surfactant, a polyol, a water-soluble polymer, and a water-soluble inorganic salt.

6. 3. The foaming agent composition according to claim 1, wherein the carbonate particles are one or more types selected from the group consisting of alkali metal carbonates and alkali metal hydrogen carbonates.

7. 3. The foaming agent composition according to claim 1, wherein the organic acid particles are one or more selected from the group consisting of succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, citric acid and pyrrolidone carboxylic acid.

8. The foaming agent composition according to claim 1 or 2, wherein the carbonate particles have an average particle size of 1 μm or more and 500 μm or less before being coated with the coating material.

9. 3. The foaming agent composition according to claim 1, wherein the organic acid particles have an average particle size of 1 μm or more and 1,000 μm or less before being coated with the coating material.

10. 3. The blowing agent composition according to claim 1, wherein the content of the agent A is 1% by mass or more and 50% by mass or less, the content of the agent B is 1% by mass or more and 50% by mass or less, and the content of the non-aqueous solvent is 5% by mass or more and 98% by mass or less, in the blowing agent composition.

11. 3. The foaming agent composition according to claim 1, wherein a molar equivalent ratio (carbonate / organic acid) of the carbonate particles in the agent A to the organic acid particles in the agent B is 0.5 or more and 2 or less.

12. The foaming agent composition according to claim 1 or 2, which is for use in cosmetics.

13. A method for generating carbon dioxide, comprising mixing the blowing agent composition according to claim 1 or 2 with water.

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