Blowing agent

Abstract

To provide a multi-pack type foaming agent useful for, for example, attracting insects such as mosquitoes and capable of continuously generating carbon dioxide; a method for producing the foaming agent; and a method for generating carbon dioxide using the multi-pack type foaming agent.SOLUTION: A multi-pack type foaming agent comprises A agent, which comprises one or more carbonates, and B agent, which comprises an organic acid having 2-6 carbon atoms, wherein the carbonates are one or more selected from alkali metal carbonates and alkali metal hydrogen carbonates, and the A agent and / or the B agent contains one or more poorly water-soluble compounds selected from organic compounds (excluding the organic acids having 2-6 carbon atoms) each having solubility in 100 g water of 30 g or less and inorganic compounds (excluding the alkali metal carbonates and the alkali metal hydrogen carbonates) each having solubility in 100 g water of 30 g or less and has a maximum length of 1 mm or greater.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a multi-form foaming agent, a method for producing the same, and a method for generating carbon dioxide.

Background Art

[0002] Conventionally, it has been known to use carbon dioxide as an attractant for capturing insects such as mosquitoes, and it is known to use a carbonate and an acid as carbon dioxide generating means. For example, Patent Document 1 discloses a mosquito trap characterized by comprising a container having an air conduction part and a side surface coated with an adhesive, and a carbon dioxide generating means using a carbonate and an acid. On the other hand, Patent Document 2 aims to provide a foaming skin external preparation having excellent stability and durability, which does not cause a problem of unexpected generation of carbon dioxide gas during the production or storage of the foaming skin external preparation. A foaming skin external preparation is disclosed, which is a single-form type or a multi-form type of two or more forms, and contains at least an acidic substance and a carbon dioxide generating substance that reacts with the acidic substance to generate carbon dioxide gas in the same agent, and the acidic substance and the carbon dioxide generating substance coexist so as not to contact each other.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] When using powders of sodium hydrogen carbonate and citric acid as in Patent Document 1, carbon dioxide is instantaneously generated, but there is a problem in continuously generating carbon dioxide. On the one hand, the foaming topical skin preparation of Patent Document 2 contains at least an acidic substance and a carbon dioxide generating substance that reacts with the acidic substance to generate carbon dioxide gas in the same preparation. Although the stability during storage is improved, it is insufficient for continuously generating carbon dioxide. The present invention relates to, for example, a multi-agent type foaming agent capable of continuously generating carbon dioxide, which is useful for attracting insects such as mosquitoes, a method for producing the same, and a method for generating carbon dioxide using the multi-agent type foaming agent. In this specification, continuous generation of carbon dioxide (also simply referred to as continuous foaming property) means generation of carbon dioxide over a long period of time, and simply having good foaming property means a large amount of carbon dioxide generated per unit time.

Means for Solving the Problems

[0005] The present inventors have found that in a multi-agent type foaming agent containing Agent A containing a carbonate and Agent B containing an organic acid, by containing at least one of Agent A and Agent B with a water-insoluble compound, carbon dioxide can be continuously generated. That is, the present invention relates to the following <1> to <4>. <1> A multi-agent type foaming agent, which is an agent with a maximum length of 1 mm or more, containing Agent A containing a carbonate and Agent B containing an organic acid having 2 to 6 carbon atoms, wherein the carbonate is at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates, and at least one of Agent A and Agent B contains at least one water-insoluble compound selected from an organic compound having a solubility in 100 g of water of 30 g or less (excluding organic acids having 2 to 6 carbon atoms) and an inorganic compound having a solubility in 100 g of water of 30 g or less (excluding alkali metal carbonates and alkali metal hydrogen carbonates). <2> An A agent containing a carbonate and a B agent containing an organic acid having 2 to 6 carbon atoms, wherein the carbonate is at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates, and at least one of the A agent and the B agent contains an organic compound (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water of 30 g or less and an inorganic compound (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility in 100 g of water of 30 g or less, and the A agent and the B agent are both compression-molded articles or extruded granules with a maximum length of 1 mm or more, a multi-agent type foaming agent. <3> A method for generating carbon dioxide by mixing the multi-agent type foaming agent according to <1> or <2> with water. <4> A method for producing the multi-agent type foaming agent according to <1> or <2>, which includes a step of mixing the water-insoluble compound with the carbonate or the organic acid. <5> Use of the multi-agent type foaming agent according to <1> or <2> for attracting insects.

Advantages of the Invention

[0006] According to the present invention, for example, a multi-agent type foaming agent capable of continuously generating carbon dioxide, which is useful for attracting insects such as mosquitoes, a method for producing the same, and a method for generating carbon dioxide using the multi-agent type foaming agent are provided.

Embodiments for Carrying Out the Invention

[0007] [Multi-agent type foaming agent] The first multi-agent type foaming agent of the present invention contains an agent A containing a carbonate (hereinafter also referred to as "carbonate A") and an agent B containing an organic acid having 2 to 6 carbon atoms (hereinafter simply referred to as "organic acid" or "organic acid B"). The carbonate is one or more selected from alkali metal carbonates and alkali metal hydrogen carbonates. At least one of the agent A and the agent B contains one or more water-insoluble compounds selected from an organic compound (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water of 30 g or less and an inorganic compound (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility in 100 g of water of 30 g or less, and is an agent with a maximum length of 1 mm or more. When only the agent B contains a water-insoluble compound and the water-insoluble compound is only the organic compound, it is preferable that the mass ratio of the organic compound to the organic acid in the agent B (organic compound / organic acid) exceeds 0.04. In the following description, an organic compound (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water of 30 g or less is simply referred to as "organic compound X", an inorganic compound (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility in 100 g of water of 30 g or less is simply referred to as "inorganic compound X", and one or more water-insoluble compounds selected from organic compound X and inorganic compound X are simply referred to as "water-insoluble compound X". Furthermore, the second multi-agent type foaming agent of the present invention contains an agent A containing a carbonate (carbonate A) and an agent B containing an organic acid having 2 to 6 carbon atoms (organic acid B). The carbonate is one or more selected from alkali metal carbonates and alkali metal hydrogen carbonates. At least one of the agent A and the agent B contains one or more water-insoluble compounds (water-insoluble compound X) selected from an organic compound (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water of 30 g or less and an inorganic compound (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility in 100 g of water of 30 g or less, and the agent A and the agent B are compression-molded products or extrusion granulated products with a maximum length of 1 mm or more. The "multi-agent foaming agent" of the present invention means that the agent A containing carbonate A and the agent B containing an organic acid with 2 to 6 carbon atoms (organic acid B) are contained in separate, distinct preparations, and the agent A and the agent B may be in contact or may not be in contact. As long as the agent A, the agent B, and a solvent containing water are mixed and used during use. Note that the preparation means an agent in the form of powder, rolling granulated product, extrusion granulated product, compression molded product, etc., and the agent A and the agent B may be in the same form or different forms, but from the perspective of continuously generating carbon dioxide, they need to be contained in separate agents.

[0008] The multi-agent foaming agent of the present invention can continuously generate carbon dioxide. The detailed mechanism by which such an effect is obtained is unclear, but some are speculated as follows. That is, at least one of the agent A and the agent B contains the water-insoluble compound X, so that the solubility of the agent (at least one of the agent A and the agent B) containing the water-insoluble compound X in water decreases, and thereby it is considered that carbon dioxide can be continuously generated.

[0009] Note that the first multi-agent foaming agent and the second multi-agent foaming agent of the present invention contain an agent A containing carbonate A and an agent B containing organic acid B, and at least one of the agent A and the agent B is an agent with a maximum length of 1 mm or more containing the water-insoluble compound X. On the other hand, in the first multi-agent foaming agent of the present invention, when either the agent A or the agent B is an agent with a maximum length of 1 mm or more containing the water-insoluble compound X, the other agent may be an agent with a maximum length of less than 1 mm, such as powder. Also, when only the agent B contains the water-insoluble compound and the water-insoluble compound is only the organic compound X, the mass ratio of the organic compound X to the organic acid B in the agent B (organic compound X / organic acid B) preferably exceeds 0.04. Note that in the first multi-agent foaming agent of the present invention, it is preferable that the agent A and the agent B are compression molded products or extrusion granulated products with a maximum length of 1 mm or more. In addition, in the second multi-agent type foaming agent of the present invention, at least one of Agent A and Agent B contains a water-insoluble compound X, and both Agent A and Agent B are compression-molded products or extrusion granulated products with a maximum length of 1 mm or more. Therefore, neither Agent A nor Agent B is an agent with a maximum length of less than 1 mm such as powder. Hereinafter, after explaining each component used in the present invention, preferred embodiments of Agent A and Agent B will be described. In the following description, unless otherwise specified, "the present invention" includes the first multi-agent type foaming agent and the second multi-agent type foaming agent.

[0010] <Each component> 〔Water-insoluble compound X〕 The water-insoluble compound X is one or more selected from the organic compound X and the inorganic compound X described below. The water-insoluble compound X has a solubility in 100 g of water (25 °C, 1013.25 hPa) of 30 g or less, preferably 10 g or less, more preferably 5 g or less, still more preferably 3 g or less, still more preferably 1 g or less, and 0 g or more, and may be 0.001 g or more.

[0011] 〔Organic compound X〕 In the present invention, the organic compound X is used to suppress the dissolution of carbonate A or an organic acid having 2 to 6 carbon atoms (organic acid B) when it comes into contact with water and dissolves. As the organic compound X, any organic compound having a solubility in water within a desired range can be used without particular limitation. From the viewpoint of suppressing the dissolution of carbonate A or organic acid B when it comes into contact with water and continuously generating carbon dioxide, the organic compound X has a solubility in 100 g of water (25 °C, 1013.25 hPa) of 30 g or less, preferably 10 g or less, more preferably 5 g or less, still more preferably 3 g or less, still more preferably 1 g or less, and 0 g or more, and may be 0.001 g or more. For the measurement of the solubility, reference can be made to, for example, Journal of the Chemical Society of Japan, 1985, No. 11, p2116-2119, the same journal, 1982, No. 11, p1830-1834, etc. Organic compound X excludes organic acids having 2 to 6 carbon atoms from the viewpoint of inhibiting continuous generation of carbon dioxide because of its high reactivity with carbonate A.

[0012] From the viewpoints of granulation property and sustained foaming property, the molecular weight of organic compound X 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 foaming property, it is preferably 10,000 or less, more preferably 6,000 or less, still more preferably 1,000 or less. As organic compound X, it is preferably at least one selected from fats and oils, waxes, fatty acids or their salts, alcohols, ether compounds, ester compounds, polymer compounds, and hydrocarbons. Among these, from the viewpoint of formulation, it is preferable to contain at least one selected from fats and oils, waxes, fatty acids or their salts, alcohols, and ester compounds, and it is more preferable to consist of at least one selected from fats and oils, waxes, fatty acids or their salts, higher alcohols, and ester compounds. From the viewpoint of sustained foaming property, the carbon number of organic compound X is preferably 8 or more, more preferably 9 or more, still more preferably 10 or more, and from the viewpoint of ease of formulation, it is preferably 500 or less, more preferably 100 or less, still more preferably 30 or less.

[0013] Examples of the fats and oils include vegetable fats such as hardened rapeseed oil and hardened castor oil, and animal fats. Examples of the waxes include waxes derived from plants such as carnauba wax, candelilla wax, and rice wax, natural waxes such as beeswax and spermaceti wax; synthetic waxes such as aliphatic hydrocarbon waxes such as polypropylene wax, polyethylene wax, polypropylene polyethylene copolymer, microcrystalline wax, paraffin wax, Fischer-Tropsch wax, and Sasol wax, ester waxes of fatty acids and higher alcohols, and ketone waxes such as distearyl ketone. Examples of the fatty acid include higher fatty acids having 10 to 30 carbon atoms, preferably 10 to 22 carbon atoms, such as capric acid, lauric acid, myristic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, etc., and myristic acid, pentadecanoic acid, palmitic acid, stearic acid, oleic acid are preferred. Examples of the fatty acid salt preferably include alkali metal salts or alkaline earth metal salts of fatty acids, more preferably sodium salts, potassium salts, calcium salts, magnesium salts of fatty acids, and still more preferably sodium salts and calcium salts of fatty acids.

[0014] Examples of the alcohol include higher alcohols having 10 to 30 carbon atoms, preferably 10 to 18 carbon atoms, such as decyl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, etc. Examples of the ether compound include dicaprylyl ether, 1,3-dimethylbutyl ether, etc. Examples of the ester compound include sucrose fatty acid ester, glycerin or polyglycerin fatty acid ester, aliphatic alkyl ester, sorbitol or sorbitan fatty acid ester, etc. The number of carbon atoms in the fatty acid moiety is preferably 8 or more, more preferably 10 or more, still more preferably 12 or more, and preferably 30 or less, more preferably 22 or less, still more preferably 18 or less. Specifically, sucrose laurate, sucrose myristate, sucrose palmitate, sucrose stearate, sucrose oleate are exemplified. In the polyglycerin fatty acid ester, the average degree of polymerization of glycerin is preferably 7 or more, more preferably 10 or more. As for the fatty acid alkyl ester, the number of carbon atoms in the alkyl group is preferably 3 or more and preferably 12 or less. Examples of the fatty acid alkyl ester include isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, cetyl 2-ethylhexanoate, etc. The polymer compound has a molecular weight (weight-average molecular weight in the case of having a molecular weight distribution) of 1,000 or more, and examples include (i) natural or semi-synthetic polymers such as polysaccharides such as xanthan gum, dextrin, gelatin, and their esters (e.g., polysaccharide fatty acid esters such as dextrin fatty acid ester, inulin fatty acid ester, etc.) and ethers, natural rubber, (ii) homopolymers such as acrylic acid, acrylic acid ester, methacrylic acid, methacrylic acid ester, hydroxymethacrylic acid ester, styrene, vinyl acetate, vinyl pyrrolidone, maleic acid ester, methyl vinyl ether, α-olefin, and copolymers thereof, and synthetic rubbers and the like. The hydrocarbon may be any of aliphatic hydrocarbons, alicyclic hydrocarbons, and aromatic hydrocarbons. Specifically, examples include natural waxes such as paraffin wax and microcrystalline wax, and synthetic waxes such as polyethylene wax.

[0015] Among these, the organic compound X is preferably at least one selected from fatty acids or fatty acid metal salts and ester compounds, more preferably at least one selected from fatty acids or their metal salts, glycerin or polyglycerin fatty acid esters, aliphatic alkyl esters, sorbitol or sorbitan fatty acid esters, and sucrose fatty acid esters, and even more preferably at least one selected from fatty acids or their salts and sucrose fatty acid esters, from the viewpoints of ease of formulation, availability, and continuously generating carbon dioxide.

[0016] In the present invention, it is preferable to satisfy at least one of the following requirements (i) and (ii) from the viewpoint of continuously generating carbon dioxide by suppressing dissolution, and more preferably to satisfy both requirements (i) and (ii). Requirement (i): The mass ratio of the organic compound X to the carbonate A in Agent A (organic compound X / carbonate A) is more than 0.04 and 1 or less. Requirement (ii): The mass ratio of the organic compound X to the organic acid B in Agent B (organic compound X / organic acid B) is more than 0.04 and 1 or less. Regarding requirement (i), when Agent A contains organic compound X, the mass ratio of organic compound X to carbonate A in Agent A (organic compound X / carbonate A) is preferably more than 0.04, more preferably 0.05 or more, still more preferably 0.08 or more, from the viewpoint of continuous carbon dioxide generation (sustained foaming property) due to dissolution inhibition, and preferably 1 or less, more preferably 0.5 or less, still more preferably 0.4 or less, still more preferably 0.3 or less, from the viewpoint of foaming property.

[0017] Also, regarding requirement (ii), when Agent B contains organic compound X, the mass ratio of organic compound X to organic acid B in Agent B (organic compound X / organic acid B) is preferably more than 0.04, more preferably 0.05 or more, still more preferably 0.08 or more, from the viewpoint of continuous carbon dioxide generation due to dissolution inhibition, and preferably 1 or less, more preferably 0.5 or less, still more preferably 0.4 or less, still more preferably 0.3 or less, from the viewpoint of foaming property. In addition, when only Agent B contains organic compound X, the mass ratio of organic compound X to organic acid B in Agent B (organic compound X / organic acid B) is more than 0.04. When only Agent B contains organic compound X, it is preferable that the mass ratio of organic compound X and organic acid B in Agent B is within the above range because continuous carbon dioxide generation becomes possible.

[0018] Therefore, from the perspective of continuous carbon dioxide generation, it is preferable that the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) exceeds 0.04, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) exceeds 0.04. More preferably, the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is 0.05 or more, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.05 or more. Even more preferably, the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is 0.08 or more, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.08 or more. Also, from the perspectives of foamability and suppression of residue, it is preferable that the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is 1 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 1 or less. More preferably, the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is 0.5 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.5 or less. Even more preferably, the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is 0.4 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.4 or less. Even more preferably, the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is 0.3 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.3 or less. Therefore, from the viewpoints of continuous carbon dioxide generation and foamability, the mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is preferably more than 0.04 and 1 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is more than 0.04 and 1 or less. The mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is preferably more than 0.04 and 0.5 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is more than 0.04 and 0.5 or less. The mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is more preferably 0.05 or more and 0.4 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.05 or more and 0.4 or less. The mass ratio of the organic compound X to the carbonate A in the Agent A (organic compound X / carbonate A) is still more preferably 0.08 or more and 0.3 or less, and / or the mass ratio of the organic compound X to the organic acid B in the Agent B (organic compound X / organic acid B) is 0.08 or more and 0.3 or less.

[0019] In the present invention, it is preferable to satisfy at least one of the following requirements (a) and (b), and more preferably to satisfy both requirements (a) and (b). Requirement (a): The content of the organic compound X in the Agent A is 3% by mass or more and 50% by mass or less. Requirement (b): The content of the organic compound X in the Agent B is 3% by mass or more and 50% by mass or less. Regarding Requirement (a), when the Agent A contains the organic compound X, from the viewpoint of continuous carbon dioxide generation by dissolution suppression, the content of the organic compound X in the Agent A is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, and still more preferably 7% by mass or more. From the viewpoints of foamability and suppression of undissolved residues, it is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, and still more preferably 25% by mass or less. Regarding requirement (b), when Agent B contains the organic compound X, from the viewpoint of continuous carbon dioxide generation by dissolution suppression, the content of the organic compound X in Agent B is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, and even more preferably 7% by mass or more. From the viewpoints of foamability and suppression of undissolved residue, it 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 25% by mass or less.

[0020] From the viewpoint of sustained foamability, it is preferable that the content of the organic compound X in Agent A is 3% by mass or more and / or the content of the organic compound X in Agent B is 3% by mass or more. More preferably, the content of the organic compound X in Agent A is 4% by mass or more and / or the content of the organic compound X in Agent B is 4% by mass or more. Still more preferably, the content of the organic compound X in Agent A is 5% by mass or more and / or the content of the organic compound X in Agent B is 5% by mass or more. Even more preferably, the content of the organic compound X in Agent A is 7% by mass or more and / or the content of the organic compound X in Agent B is 7% by mass or more. Also, from the viewpoints of foamability and suppression of undissolved residue, it is preferable that the content of the organic compound X in Agent A is 50% by mass or less and / or the content of the organic compound X in Agent B is 50% by mass or less. More preferably, the content of the organic compound X in Agent A is 40% by mass or less and / or the content of the organic compound X in Agent B is 40% by mass or less. Still more preferably, the content of the organic compound X in Agent A is 30% by mass or less and / or the content of the organic compound X in Agent B is 30% by mass or less. Even more preferably, the content of the organic compound X in Agent A is 25% by mass or less and / or the content of the organic compound X in Agent B is 25% by mass or less. Therefore, from the viewpoints of continuous carbon dioxide generation and foaming properties, the content of the organic compound X in the Agent A is preferably 3% by mass or more and 50% by mass or less, and / or the content of the organic compound X in the Agent B is preferably 3% by mass or more and 50% by mass or less. More preferably, the content of the organic compound X in the Agent A is 4% by mass or more and 40% by mass or less, and / or the content of the organic compound X in the Agent B is 4% by mass or more and 40% by mass or less. Even more preferably, the content of the organic compound X in the Agent A is 5% by mass or more and 30% by mass or less, and / or the content of the organic compound X in the Agent B is 5% by mass or more and 30% by mass or less. Even more preferably, the content of the organic compound X in the Agent A is 7% by mass or more and 25% by mass or less, and / or the content of the organic compound X in the Agent B is 7% by mass or more and 25% by mass or less.

[0021] [Inorganic Compound X] In the present invention, the inorganic compound X is used to suppress the intrusion of carbonate A or organic acid B into the water and its dissolution when it comes into contact with the water. From the viewpoint of suppressing the contact between carbonate A or organic acid B and water and its dissolution, and continuously generating carbon dioxide, the dissolution amount (at 25°C, 1013.25 hPa) of the inorganic compound X in 100 g of water is 30 g or less, preferably 10 g or less, more preferably 5 g or less, even more preferably 3 g or less, even more preferably 1 g or less, and is 0 g or more, and may be 0.001 g or more. Regarding the dissolution amount of the inorganic compound X in water, general literature can be referred to. For example, simply add 100 g of water and a predetermined amount of the inorganic compound to a 200 mL beaker, stir at 25°C for 1 hour (100 rpm, 1 cm stirrer piece) with a stirrer, and visually observe whether it has dissolved. Carbonates of alkali metals and bicarbonates of alkali metals are excluded from the inorganic compound X because they have high reactivity with the organic acid B and inhibit continuous carbon dioxide generation.

[0022] As the inorganic compound X, from the viewpoint of suppressing the intrusion of water into the preparation (Agent A or Agent B), it may be a powdery, plate-like, granular, needle-like, or fibrous inorganic compound. As the inorganic compound X, from the viewpoint of having a low solubility in water and inhibiting the contact between the carbonate A or the organic acid B and water to enable continuous generation of carbon dioxide, one or more selected from alkaline earth metal salts such as carbonic acid, silicic acid, phosphoric acid, pyrophosphoric acid, sulfuric acid, metal oxides, metal hydroxides, and silicate compounds are preferable, one or more selected from metal oxides, metal hydroxides, and silicate compounds are more preferable, metal oxides and silicate compounds are further preferable, and silicate compounds are further preferable. For example, calcium hydroxide is both an alkaline earth metal salt and a metal hydroxide. Therefore, the above-mentioned alkaline earth metal salts, metal oxides, metal hydroxides, and silicate compounds are not exclusive classifications, and compounds belonging to two or more classifications are allowed. Specifically, alkaline earth metal salts of carbonic acid, silicic acid, phosphoric acid, pyrophosphoric acid, sulfuric acid such as magnesium carbonate, (light / heavy) calcium carbonate, calcium silicate, calcium pyrophosphate, (secondary / tertiary) calcium phosphate, magnesium phosphate, and barium sulfate; Metal oxides or hydroxides such as zinc oxide, aluminum oxide (alumina), magnesium oxide, titanium oxide, and aluminum hydroxide; Examples of silicate compounds include silica, mica, talc, montmorillonite, aluminosilicate (zeolite), aluminum silicate, magnesium silicate, calcium silicate, and aluminum magnesium silicate.

[0023] From the viewpoint of sustained foamability, these inorganic compounds X are preferably hydrophobized. Examples of the hydrophobization treatment include treatment with fluorine compounds such as perfluoropolyether, perfluoroalkylalkoxysilane, and fluorine-modified silicone; treatment with silicone compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, cyclic silicone, highly polymerized silicone, and acrylic-modified silicone; treatment with alkylsilanes such as hexamethyldisilazane (HMDS) and dimethyldichlorosilane (DMDS); hydrophobization by metal soap treatment, oil treatment, and organic titanate treatment. Hydrophobized silica is preferable.

[0024] From the perspective of inhibiting the contact between the inorganic compound X, carbonate A, and organic acid B with water and further improving the sustained foaming property, the average particle size of the inorganic compound X is preferably 0.01 μm or more, more preferably 0.03 μm or more. From the same perspective, it is preferably 100 μm or less, more preferably 50 μm or less, still more preferably 10 μm or less, and still more preferably 5 μm or less. The average particle size can be determined by calculating the number average of the major axis lengths (the length of the straight line connecting the points farthest apart on the surface of the particles) observed for 50 randomly selected inorganic compounds using a scanning electron microscope or an optical microscope.

[0025] From the perspective of the sustained foaming property due to dissolution inhibition, it is preferable to satisfy at least one of the following requirements (i) and (ii). Requirement (i): The mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) exceeds 0.04 and is 1 or less. Requirement (ii): The mass ratio of the inorganic compound X to the organic acid having 2 to 6 carbon atoms (organic acid B) in the agent B (inorganic compound X / organic acid B) exceeds 0.04 and is 1 or less. Regarding requirement (i), from the perspective of the continuous generation of carbon dioxide (sustained foaming property) due to dissolution inhibition, the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) preferably exceeds 0.04, more preferably is 0.05 or more, and still more preferably is 0.08 or more. From the perspective of the foaming property, the mass ratio is preferably 1 or less, more preferably 0.5 or less, still more preferably 0.4 or less, and still more preferably 0.3 or less. Also, regarding requirement (ii), the preferable value of the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is the same as the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) described above.

[0026] Therefore, from the perspective of continuous carbon dioxide generation, it is preferable that the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) exceeds 0.04, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) exceeds 0.04. More preferably, the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) is 0.05 or more, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is 0.05 or more. Even more preferably, the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) is 0.08 or more, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is 0.08 or more. Also, from the perspectives of foamability and suppression of undissolved residue, it is preferable that the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) is 1 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is 1 or less. Preferably, the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate B) is 0.5 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is 0.5 or less. More preferably, the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) is 0.4 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is 0.4 or less. Even more preferably, the mass ratio of the inorganic compound X to the carbonate A in the agent A (inorganic compound X / carbonate A) is 0.3 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the agent B (inorganic compound X / organic acid B) is 0.3 or less. Therefore, from the viewpoints of continuous carbon dioxide generation and foamability, the mass ratio of the inorganic compound X to the carbonate A in the Agent A (inorganic compound X / carbonate A) is preferably more than 0.04 and 1 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the Agent B (inorganic compound X / organic acid B) is more than 0.04 and 1 or less. From the viewpoints of continuous carbon dioxide generation and foamability, the mass ratio of the inorganic compound X to the carbonate A in the Agent A (inorganic compound X / carbonate A) is preferably more than 0.04 and 0.5 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the Agent B (inorganic compound X / organic acid B) is more than 0.04 and 0.5 or less. The mass ratio of the inorganic compound X to the carbonate A in the Agent A (inorganic compound X / carbonate A) is more preferably 0.05 or more and 0.4 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the Agent B (inorganic compound X / organic acid B) is 0.05 or more and 0.4 or less. The mass ratio of the organic compound X to the carbonate A in the Agent A (inorganic compound X / carbonate A) is more preferably 0.08 or more and 0.3 or less, and / or the mass ratio of the inorganic compound X to the organic acid B in the Agent B (inorganic compound X / organic acid B) is 0.08 or more and 0.3 or less.

[0027] In the present invention, it is preferable to satisfy at least one of the following requirements (a) and (b). Requirement (a): The content of the inorganic compound X in the Agent A is 3% by mass or more and 50% by mass or less. Requirement (b): The content of the inorganic compound X in the Agent B is 3% by mass or more and 50% by mass or less. Regarding requirement (a), when the Agent A contains the inorganic compound X, from the viewpoint of continuous carbon dioxide generation by dissolution inhibition, the content of the inorganic compound X in the Agent A is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, and still more preferably 7% by mass or more. From the viewpoints of foamability and suppression of undissolved residues, it is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, and still more preferably 25% by mass or less. Regarding requirement (b), when agent B contains inorganic compound X, the preferred content of inorganic compound X in agent B is the same as the preferred content of inorganic compound X in agent A described above.

[0028] From the perspective of sustained foaming properties, it is preferable that the content of inorganic compound X in agent A is 3% by mass or more, and / or the content of inorganic compound X in agent B is 3% by mass or more. More preferably, the content of inorganic compound X in agent A is 4% by mass or more, and / or the content of inorganic compound X in agent B is 4% by mass or more. Even more preferably, the content of inorganic compound X in agent A is 5% by mass or more, and / or the content of inorganic compound X in agent B is 5% by mass or more. Even more preferably, the content of inorganic compound X in agent A is 7% by mass or more, and / or the content of inorganic compound X in agent B is 7% by mass or more. Also, from the perspectives of foaming properties and suppression of residues, it is preferable that the content of inorganic compound X in agent A is 50% by mass or less, and / or the content of inorganic compound X in agent B is 50% by mass or less. More preferably, the content of inorganic compound X in agent A is 40% by mass or less, and / or the content of inorganic compound X in agent B is 40% by mass or less. Even more preferably, the content of inorganic compound X in agent A is 30% by mass or less, and / or the content of inorganic compound X in agent B is 30% by mass or less. Even more preferably, the content of inorganic compound X in agent A is 25% by mass or less, and / or the content of inorganic compound X in agent B is 25% by mass or less. Therefore, from the perspectives of continuous carbon dioxide generation and foaming properties, it is preferable that the content of the inorganic compound X in agent A is 3% by mass or more and 50% by mass or less, and / or the content of the inorganic compound X in agent B is 3% by mass or more and 50% by mass or less. More preferably, the content of the inorganic compound X in agent A is 4% by mass or more and 40% by mass or less, and / or the content of the inorganic compound X in agent B is 4% by mass or more and 40% by mass or less. Even more preferably, the content of the inorganic compound X in agent A is 5% by mass or more and 30% by mass or less, and / or the content of the inorganic compound X in agent B is 5% by mass or more and 30% by mass or less. Even more preferably, the content of the inorganic compound X in agent A is 7% by mass or more and 25% by mass or less, and / or the content of the inorganic compound X in agent B is 7% by mass or more and 25% by mass or less.

[0029] From the above viewpoints, in the present invention, satisfying at least one of the following requirements (i) and (ii) is preferable from the viewpoint of sustained generation of carbon dioxide by dissolution suppression, and more preferably satisfying both requirements (i) and (ii). Requirement (i): The mass ratio of the water-insoluble compound X to the carbonate A in Agent A (water-insoluble compound X / carbonate A) is more than 0.04 and 1 or less. Requirement (ii): The mass ratio of the water-insoluble compound X to the organic acid B in Agent B (water-insoluble compound X / organic acid B) is more than 0.04 and 1 or less. Regarding Requirement (i), when Agent A contains the water-insoluble compound X, the mass ratio of the water-insoluble compound X to the carbonate A in Agent A (water-insoluble compound X / carbonate A) is preferably more than 0.04, more preferably 0.05 or more, still more preferably 0.08 or more, from the viewpoint of sustained generation of carbon dioxide by dissolution suppression (sustained foaming property), and from the viewpoint of foaming property, the mass ratio is preferably 1 or less, more preferably 0.5 or less, still more preferably 0.4 or less, and even more preferably 0.3 or less.

[0030] Regarding Requirement (ii), when Agent B contains the water-insoluble compound X, the mass ratio of the water-insoluble compound X to the organic acid B in Agent B (water-insoluble compound X / organic acid B) is preferably more than 0.04, more preferably 0.05 or more, still more preferably 0.08 or more, from the viewpoint of sustained generation of carbon dioxide by dissolution suppression, and from the viewpoint of foaming property, the mass ratio is preferably 1 or less, more preferably 0.5 or less, still more preferably 0.4 or less, and even more preferably 0.3 or less. In addition, when only Agent B contains the water-insoluble compound X and the water-insoluble compound X is only the organic compound X, the mass ratio of the water-insoluble compound X to the organic acid B in Agent B (water-insoluble compound X / organic acid B) is preferably more than 0.04.

[0031] Therefore, from the perspective of continuous carbon dioxide generation, it is preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) exceeds 0.04, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) exceeds 0.04. It is more preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is 0.05 or more, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.05 or more. It is even more preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is 0.08 or more, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.08 or more. Also, from the perspectives of foamability and suppression of residue, it is preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is 1 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 1 or less. It is preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is 0.5 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.5 or less. It is more preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is 0.4 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.4 or less. It is even more preferable that the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is 0.3 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.3 or less. Therefore, from the viewpoints of continuous carbon dioxide generation and foaming property, the mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is preferably more than 0.04 and 1 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is more than 0.04 and 1 or less. The mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is preferably more than 0.04 and 0.5 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is more than 0.04 and 0.5 or less. The mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is more preferably 0.05 or more and 0.4 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.05 or more and 0.4 or less. The mass ratio of the water-insoluble compound X to the carbonate A in the agent A (water-insoluble compound X / carbonate A) is still more preferably 0.08 or more and 0.3 or less, and / or the mass ratio of the water-insoluble compound X to the organic acid B in the agent B (water-insoluble compound X / organic acid B) is 0.08 or more and 0.3 or less.

[0032] In the present invention, it is preferable to satisfy at least one of the following requirements (a) and (b), and more preferably to satisfy both requirements (a) and (b). Requirement (a): The content of the water-insoluble compound X in the agent A is 3% by mass or more and 50% by mass or less. Requirement (b): The content of the water-insoluble compound X in the agent B is 3% by mass or more and 50% by mass or less. Regarding requirement (a), when the agent A contains the water-insoluble compound X, from the viewpoint of continuous carbon dioxide generation by dissolution inhibition, the content of the water-insoluble compound X in the agent A is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, still more preferably 7% by mass or more. From the viewpoints of foaming property and suppression of undissolved residue, it is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, still more preferably 25% by mass or less. Regarding requirement (b), when Agent B contains water-insoluble compound X, from the perspective of sustained carbon dioxide generation due to dissolution inhibition, the content of water-insoluble compound X in Agent B is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, and even more preferably 7% by mass or more. From the perspectives of foamability and suppression of undissolved residue, it 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 25% by mass or less.

[0033] From the perspective of sustained foamability, it is preferable that the content of the water-insoluble compound X in Agent A is 3% by mass or more, and / or the content of the water-insoluble compound X in Agent B is 3% by mass or more. More preferably, the content of the water-insoluble compound X in Agent A is 4% by mass or more, and / or the content of the water-insoluble compound X in Agent B is 4% by mass or more. Still more preferably, the content of the water-insoluble compound X in Agent A is 5% by mass or more, and / or the content of the water-insoluble compound X in Agent B is 5% by mass or more. Even more preferably, the content of the water-insoluble compound X in Agent A is 7% by mass or more, and / or the content of the water-insoluble compound X in Agent B is 7% by mass or more. Also, from the perspectives of foamability and suppression of undissolved residue, it is preferable that the content of the water-insoluble compound X in Agent A is 50% by mass or less, and / or the content of the water-insoluble compound X in Agent B is 50% by mass or less. More preferably, the content of the water-insoluble compound X in Agent A is 40% by mass or less, and / or the content of the water-insoluble compound X in Agent B is 40% by mass or less. Still more preferably, the content of the water-insoluble compound X in Agent A is 30% by mass or less, and / or the content of the water-insoluble compound X in Agent B is 30% by mass or less. Even more preferably, the content of the water-insoluble compound X in Agent A is 25% by mass or less, and / or the content of the water-insoluble compound X in Agent B is 25% by mass or less. Therefore, from the viewpoints of continuous carbon dioxide generation and foamability, the content of the water-insoluble compound X in the Agent A is preferably 3% by mass or more and 50% by mass or less, and / or the content of the water-insoluble compound X in the Agent B is preferably 3% by mass or more and 50% by mass or less. More preferably, the content of the water-insoluble compound X in the Agent A is 4% by mass or more and 40% by mass or less, and / or the content of the water-insoluble compound X in the Agent B is 4% by mass or more and 40% by mass or less. Even more preferably, the content of the water-insoluble compound X in the Agent A is 5% by mass or more and 30% by mass or less, and / or the content of the water-insoluble compound X in the Agent B is 5% by mass or more and 30% by mass or less. Even more preferably, the content of the water-insoluble compound X in the Agent A is 7% by mass or more and 25% by mass or less, and / or the content of the water-insoluble compound X in the Agent B is 7% by mass or more and 25% by mass or less.

[0034] 〔Carbonate A〕 In the present invention, the Agent A contains a carbonate A. The carbonate A used in the present invention is a component that is neutralized by the organic acid B contained in the Agent B and generates carbon dioxide gas. The carbonate A is preferably at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates. Examples of the carbonate A include sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, etc. From the viewpoints of raw material cost and foamability, sodium carbonate (Na2CO3) and sodium hydrogen carbonate (NaHCO3) are particularly preferred. From the viewpoint of foamability, the content of the carbonate A in the Agent A is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 75% by mass or more. From the viewpoint of continuous carbon dioxide generation by the organic compound X, it is 100% by mass or less, preferably 96% by mass or less, more preferably 95% by mass or less, even more preferably 93% by mass or less. 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 75% by mass or more and 100% by mass or less, from the viewpoint of foamability. From the viewpoints of foamability and continuous generation of carbon dioxide, 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.

[0035] [Organic acid having 2 to 6 carbon atoms (organic acid B)] In the present invention, Agent B contains an organic acid having 2 to 6 carbon atoms (organic acid B). The organic acid B used in the present invention is a component for neutralizing carbonate A and generating carbon dioxide gas. 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 pyrrolidonecarboxylic 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 the group consisting of fumaric acid, succinic acid, malic acid, and citric acid. From the viewpoints of ease of handling (low hygroscopicity) and economy, succinic acid, fumaric acid, and citric acid are more preferable, succinic acid and fumaric acid are still more preferable, and fumaric acid is even more preferable from the viewpoint of continuous generation of carbon dioxide. These organic acids B may be used alone or in appropriate combination of two or more.

[0036] The average particle size of the organic acid B is preferably 1000 μm or less, more preferably 500 μm or less, still more preferably 250 μm or less, from the viewpoint of foamability, and preferably 10 μm or more, more preferably 50 μm or more, from the viewpoints of continuous generation of carbon dioxide and granulation properties. When the particle size is larger than that shown above, it is preferably pre-crushed 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 coarse crushers such as flash mills. These can be a one-stage operation or a multi-stage operation using the same type or different types of crushers.

[0037] From the viewpoint of foamability, the content of organic acid B in the B agent 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 the continuous generation of carbon dioxide by the organic compound X, 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. From the viewpoint of foamability, the content of organic acid B in the B agent 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 the continuous generation of carbon dioxide, 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.

[0038] In the A agent and the B agent, within a range that does not impair the present invention, the A agent may contain an organic acid having 2 to 6 carbon atoms, and the B agent may contain a carbonate. However, from the viewpoints of sustained foamability and storage stability, it is preferable that the A agent does not contain an organic acid having 2 to 6 carbon atoms, and it is preferable that the B agent does not contain a carbonate. The Agent A and Agent B may contain a water-soluble organic compound, such as a water-soluble polymer, with a dissolution amount (at 25°C) in 100 g of water exceeding 30 g, from the perspective of formulation (e.g., tablet forming), as long as the present invention is not impaired. Examples of the water-soluble polymer include polyethylene glycol, etc. from the perspective of formulation. The content of the water-soluble organic compound is preferably 1% by mass or more, more preferably 2% by mass or more, still more preferably 3% by mass or more from the perspective of formulation, and preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less from the perspective of sustained carbon dioxide generation. Also, from the perspective of sustained carbon dioxide generation, the Agent A and Agent B may contain a water-insoluble inorganic compound.

[0039] In the present invention, other components may be added to the Agent A and Agent B in addition to the above components. Examples of other components include surfactants; fragrances; antioxidants; antibacterial and antifungal agents, bactericides; pigments; disintegration aids; anti-fading agents; pH adjusters, etc.

[0040] <Multi-agent type foaming agent> The multi-agent type foaming agent of the present invention is an agent with a maximum length of 1 mm or more, in which at least one of Agent A and Agent B contains a poorly water-soluble compound X. As long as either Agent A or Agent B contains the poorly water-soluble compound X and has a maximum length of 1 mm or more, the other agent may not contain the poorly water-soluble compound X and may be in a powdery form with a maximum length of less than 1 mm. When the maximum length is 1 mm or more, the sustained foaming property is excellent. The maximum length of Agent A and Agent B containing the poorly water-soluble compound X is 1 mm or more, preferably 3 mm or more, more preferably 10 mm or more, still more preferably 30 mm or more from the perspectives of sustained foaming property and ease of handling, and preferably 80 mm or less, more preferably 60 mm or less, still more preferably 50 mm or less from the perspective of ease of handling. The maximum length of Agent A and Agent B containing water-insoluble compound X is preferably 1 mm or more and 80 mm or less, more preferably 3 mm or more and 60 mm or less, still more preferably 10 mm or more and 50 mm or less, and even more preferably 30 mm or more and 50 mm or less, from the viewpoints of sustained foaming property and ease of handling. Here, the maximum length means the maximum length among the length, width, and height when assuming that Agent A or Agent B is accommodated in the smallest rectangular parallelepiped.

[0041] In the first multi-agent type foaming agent of the present invention, the agent having a maximum length of 1 mm or more is not particularly limited, but from the viewpoint of continuously generating carbon dioxide, it is preferably a compression molded product or an extrusion granulated product having a maximum length of 1 mm or more. That is, at least one of Agent A and Agent B is preferably a compression molded product or an extrusion granulated product containing water-insoluble compound X and having a maximum length of 1 mm or more. More preferably, at least one of Agent A and Agent B is a compression molded product containing water-insoluble compound X and having a maximum length of 1 mm or more. Even more preferably, at least Agent A is a compression molded product containing water-insoluble compound X and having a maximum length of 1 mm or more. Also, it is preferable that Agent A and Agent B are compression molded products or extrusion granulated products. When Agent A contains water-insoluble compound X, Agent A is preferably a compression molded product or an extrusion granulated product having a maximum length of 1 mm or more. In this case, regardless of whether Agent B contains water-insoluble compound X or not, it is preferably a compression granulated product or an extrusion granulated product. More preferably, Agent B is also a compression molded product or an extrusion granulated product having a maximum length of 1 mm or more. The same applies when Agent B contains water-insoluble compound X.

[0042] In the second multi-agent type foaming agent of the present invention, both the agent A and the agent B are compression-molded articles or extruded and granulated articles having a maximum length of 1 mm or more. That is, at least one of the agent A and the agent B is a compression-molded article or an extruded and granulated article having a maximum length of 1 mm or more and containing the organic compound X. It is preferable that at least one of the agent A and the agent B is a compression-molded article having a maximum length of 1 mm or more and containing the organic compound X, and it is more preferable that at least the agent A is a compression-molded article having a maximum length of 1 mm or more and containing the organic compound X.

[0043] In the present invention, in the case where the multi-agent type foaming agent has, for example, the agent A and the agent B as compression-molded articles, the multi-agent type foaming agent may be one using one compression-molded article as the agent A and one compression-molded article as the agent B, but it does not exclude the use of a plurality of compression-molded articles as the agent A or the use of a plurality of compression-molded articles as the agent B. In the present invention, when at least one of the agent A and the agent B is a compression-molded article (tablet), from the viewpoints of ease of handling and sustained foaming property, it is preferably a single compression-molded article. The mass of the agent A in the multi-agent type foaming agent is preferably 5 g or more, more preferably 10 g or more, still more preferably 20 g or more, from the viewpoints of ease of handling and sustained foaming property, and in total (in the case of being individualized from powders or multiple tablets, etc., its total mass), and from the viewpoint of ease of handling, it is preferably 200 g or less, more preferably 120 g or less, still more preferably 60 g or less. The mass of the agent A in the multi-agent type foaming agent is preferably 5 g or more and 200 g or less, more preferably 10 g or more and 120 g or less, still more preferably 20 g or more and 60 g or less, from the viewpoints of ease of handling and sustained foaming property. Similarly, the mass of the agent B is preferably 5 g or more, more preferably 10 g or more, still more preferably 20 g or more, from the viewpoints of ease of handling and sustained foaming property, and in total, and from the viewpoint of ease of handling, it is preferably 200 g or less, more preferably 120 g or less, still more preferably 60 g or less. The mass of Agent B in the multi-agent foaming agent is preferably 5 g or more and 200 g or less, more preferably 10 g or more and 120 g or less, still more preferably 20 g or more and 60 g or less, from the viewpoints of ease of handling and sustained foaming property.

[0044] The hardness of Agent A and Agent B is preferably 0.3 N or more, more preferably 0.5 N or more, still more preferably 5 N or more, still more preferably 30 N or more, still more preferably 80 N or more, still more preferably 120 N or more, still more preferably 200 N or more, from the viewpoints of ease of handling and sustained generation of carbon dioxide, and preferably 3000 N or less, more preferably 1000 N or less, from the viewpoint of ease of manufacture.

[0045] The following are exemplified as specific embodiments of the multi-agent foaming agent of the present invention. 1. Agent A is a compression molded article containing the water-insoluble compound X, and Agent B is another compression molded article containing the water-insoluble compound X 2. Agent A is a compression molded article containing the water-insoluble compound X, and Agent B is another compression molded article not containing the water-insoluble compound X 3. Agent A is a compression molded article not containing the water-insoluble compound X, and Agent B is another compression molded article containing the water-insoluble compound X 4. Agent A is an extruded granule containing the water-insoluble compound X, and Agent B is another extruded granule containing the water-insoluble compound X 5. Agent A is an extruded granule containing the water-insoluble compound X, and Agent B is another extruded granule not containing the water-insoluble compound X 6. Agent A is an extruded granule not containing the water-insoluble compound X, and Agent B is another extruded granule containing the water-insoluble compound X 7. Agent A is a compression molded article containing the organic compound X, and Agent B is an extruded granule containing the organic compound X 8. Agent A is a compression molded article containing the water-insoluble compound X, and Agent B is an extruded granule not containing the water-insoluble compound X 9. Agent A is an extrusion granule containing the water-insoluble compound X, and agent B is a compression molding containing the water-insoluble compound X. 10. Agent A is an extrusion granule not containing the water-insoluble compound X, and agent B is a compression molding containing the water-insoluble compound X. 11. Agent A is an extrusion granule containing the water-insoluble compound X, and agent B is a compression molding not containing the water-insoluble compound X. 12. Agent A is a compression molding not containing the water-insoluble compound X, and agent B is an extrusion granule containing the water-insoluble compound X. 13. Agent A is a compression molding containing the water-insoluble compound X, and agent B is a powder. 14. Agent A is an extrusion granule containing the water-insoluble compound X, and agent B is a powder. 15. Agent A is a powder, and agent B is a compression molding containing the water-insoluble compound X. 16. Agent A is a powder, and agent B is an extrusion granule containing the water-insoluble compound X. Among these, from the viewpoint of continuous carbon dioxide generation, Nos. 1 to 3 and 7 to 10 are preferable, Nos. 1 to 3 are more preferable, and No. 1 is even more preferable. In the first multi-agent type foaming agent of the present invention, in the cases of 3, 6, 10, 12, 15, and 16, the mass ratio of the water-insoluble compound X to the organic acid B in agent B (organic compound X / organic acid B) is preferably more than 0.04. Moreover, the maximum length of either agent A or agent B containing at least the water-insoluble compound X is 1 mm or more. On the other hand, the second multi-agent type foaming agent of the present invention is the above Nos. 1 to 12, and the maximum length of either agent A or agent B containing at least the water-insoluble compound X is 1 mm or more. Needless to say, the present invention is not limited to the above-described aspects 1 to 16.

[0046] From the viewpoint of sustained foaming property, it is preferable that agent A is a compression molding or an extrusion granule containing the water-insoluble compound X, and more preferably a compression molding. From the viewpoints of continuous carbon dioxide generation and ease of handling, both Agent A and Agent B are preferably a compression-molded product or an extrusion granulated product containing the water-insoluble compound X, and more preferably a compression-molded product containing the water-insoluble compound X. The compression-molded product refers to briquettes and tablets. Briquettes can be manufactured by a briquetting machine, and tablets can be manufactured by a tableting machine.

[0047] <Manufacturing method> The manufacturing method of the present invention is a method for manufacturing a compression-molded product or an extrusion granulated product in which Agent A and / or Agent B contains an organic compound X (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water of 30 g or less. When the organic compound X is in powder form, it can be obtained by the following Step 1-1 and Step 1-2. In this specification, Step 1-1 is also referred to as dry blending. Step 1-1: A step of mixing powdery organic compound X and carbonate A or organic acid B to obtain a mixture Step 1-2: A step of extrusion granulating or compression molding the obtained mixture

[0048] When the organic compound X is in liquid form, it can be obtained by the following Step 2-1 and Step 2-2. In this specification, Step 2-1 is also referred to as melt blending. Step 2-1: A step of mixing liquid organic compound X and carbonate A or organic acid B to obtain a mixture Step 2-2: A step of extrusion granulating or compression molding the obtained mixture In particular, when the organic compound X is a fatty acid, a liquid fatty acid and an alkali agent may be used in combination. In that case, the organic compound X becomes a fatty acid salt. When a liquid fatty acid and an alkali agent are used in combination, it can be obtained by the following Steps 3-1 to 3-2. In this specification, Step 3-1 is also referred to as neutralization blending. Step 3-1: A step of mixing an alkali agent, a fatty acid, and carbonate A or organic acid B to obtain a mixture Step 3-2: A step of extrusion granulating or compression molding the obtained mixture More specifically, Step 3-1 preferably includes Steps 3-1-1 and 3-1-2. Step 3-1-1: A step of mixing an alkaline agent with carbonate A or organic acid B Step 3-1-2: A step of further adding and mixing a fatty acid to obtain a mixed powder

[0049] In the case of compression molding, there is no limitation as long as briquettes or tablets can be obtained, and well-known briquetting machines and tableting machines can be used. From the viewpoint of continuous carbon dioxide generation, the thickness of the compression molded product is preferably 3 mm or more, more preferably 5 mm or more, and still more preferably 8 mm or more. From the viewpoint of foamability, it is preferably 50 mm or less, more preferably 40 mm or less, and still more preferably 30 mm or less. A briquetting machine is a device in which two rolls with pockets engraved on the outer periphery to form a mold of a desired compressed product bite into each other and rotate at the same speed, and granulated material is supplied between the rolls and continuously compression molded. As a well-known briquetting machine, a briquetting machine [manufactured by Shin-Tokyo Industries Co., Ltd.] etc. can be used. A tableting machine is a device that fills granulated material into a mortar and compresses and forms it between a lower pestle and an upper pestle. Tableting machines include a single-shot tableting machine in which a set of upper and lower pestles move up and down in one mortar for compression, and a rotary tableting machine in which mortars are embedded at equal intervals on the outer periphery of a horizontally rotating turntable, and a series of operations of filling, compression, and discharging are continuously performed while the turntable rotates. As well-known tableting machines, a tableting machine manufactured by Riken Kiki Co., Ltd. can be used for a single-shot tableting machine, and a tableting machine manufactured by Kikusui Chemical Co., Ltd. can be used for a rotary tableting machine.

[0050] The shape of the briquette when using a briquetting machine is not particularly limited, and examples include a cylindrical shape (pillow shape, finger shape, lens shape), almond shape, etc. In the case of a cylindrical shape, the diameter (in the case of a polygon, the length of the maximum diagonal) is preferably 1 mm or more, more preferably 2 mm or more, still more preferably 3 mm or more from the viewpoint of continuous carbon dioxide generation, and preferably 30 mm or less, more preferably 20 mm or less, still more preferably 10 mm or less from the viewpoint of foamability. The length or thickness is preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more from the viewpoint of continuous carbon dioxide generation, and preferably 50 mm or less, more preferably 40 mm or less, still more preferably 30 mm or less from the viewpoint of foamability.

[0051] When using a tableting machine, for the size of the tablet, in the case of a cylindrical shape, the diameter (in the case of a polygon, the length of the maximum diagonal) is preferably 10 mm or more, more preferably 20 mm or more, still more preferably 30 mm or more from the viewpoint of continuous carbon dioxide generation, and preferably 80 mm or less, more preferably 60 mm or less, still more preferably 50 mm or less from the viewpoint of handleability. The thickness of the tablet is preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more from the viewpoint of continuous carbon dioxide generation, and preferably 50 mm or less, more preferably 40 mm or less, still more preferably 30 mm or less from the viewpoint of foamability. The shape of the tablet is not particularly limited, but a cylindrical shape or a polygonal shape is preferred.

[0052] The compression load during tableting is preferably 3 kN or more, more preferably 5 kN or more, still more preferably 10 kN or more, still more preferably 50 kN or more from the viewpoint of continuous carbon dioxide generation, and preferably 200 kN or less, more preferably 150 kN or less, still more preferably 120 kN or less from the viewpoint of foamability.

[0053] Examples of the extruder include well-known extrusion granulators such as pellet double, dome gran, twin dome gran, disk pellet (manufactured by Dalton Co., Ltd.), basket type sizing machine (manufactured by Kikusui Seisakusho Co., Ltd.), etc. When using an extrusion granulator as the granulator, the hole diameter of the screen is preferably 0.3 mm or more, more preferably 0.5 mm or more, still more preferably 0.7 mm or more from the viewpoint of continuous carbon dioxide generation, and preferably 10 mm or less, more preferably 5 mm or less, still more preferably 3 mm or less from the viewpoint of foamability. By using such a screen, cylindrical or noodle-shaped granulated products, that is, cylindrical or noodle-shaped solids can be obtained.

[0054] The obtained extrusion granulated product can be cooled to suppress unification and lumping, and then sized as necessary. As the machine used for sizing, well-known grinders (or crushers) can be used, for example, high-speed mixers (manufactured by Earth Technica Co., Ltd.), marumerizers (manufactured by Dalton Co., Ltd.), spiral flows (manufactured by Freund Industry Co., Ltd.), Fitz mills (manufactured by Dalton Co., Ltd.), power mills (manufactured by Paurek Co., Ltd.), Comil (manufactured by Quadro), etc.

[0055] From the viewpoint of continuous carbon dioxide generation, the diameter of the extrusion granulated product after sizing is preferably 0.3 mm or more, more preferably 0.5 mm or more, still more preferably 0.7 mm or more, and from the viewpoint of foamability, it is preferably 10 mm or less, more preferably 5 mm or less, still more preferably 3 mm or less. Also, from the viewpoint of continuous carbon dioxide generation, the length of the extrusion granulated product is preferably 1 mm or more, more preferably 2 mm or more, and from the viewpoint of foamability, it is preferably 30 mm or less, more preferably 10 mm or less, still more preferably 5 mm or less.

[0056] Powder is fine solid particles with a maximum length of less than 1 mm, and the maximum length is preferably 0.3 mm or less, more preferably 0.15 mm or less. Note that the maximum length of the powder means the number average value of the major axis lengths (the length of the straight line connecting the points farthest apart on the surface of the particles) of 50 randomly extracted powders observed with an optical microscope.

[0057] [Foaming method] The foaming method of the present invention is to mix Agent A, Agent B, and water, which are the multi-agent type foaming agents of the present invention. Preferably, the amount of carbon dioxide foamed after 72 hours of mixing, more preferably 5 days after mixing, and still more preferably 1 week after mixing is preferably 0.1 mL / min or more. The equivalent ratio (carbonate A / organic acid B) of the carbonate A in Agent A and the organic acid 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 sustained foamability, and is preferably 2 or less, more preferably 1.2 or less. The equivalent ratio of the carbonate A in Agent A and the 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.

[0058] Agent A and Agent B in water may come into contact with each other, but it is preferably non-contact. For the water to be mixed, for example, a binder, a wetting agent, a sweetening agent, a surfactant, a preservative, a fragrance, a medicinal ingredient, a coloring agent, etc. can be appropriately blended. Examples of the binder include sodium carboxymethylcellulose, sodium polyacrylate, hydroxyethylcellulose, thickening silica, montmorillonite, carrageenan, sodium alginate, guar gum, pectin, etc. Examples of the wetting agent include sorbitol, propylene glycol, 1,3-butylene glycol, ethylene glycol, polyethylene glycol, polypropylene glycol, xylitol, maltose, lactose, erythritol, etc., and examples of the sweetening agent include sodium saccharin, stevioside, thaumatin, aspartylphenylalanine methyl ester, etc.

[0059] Examples of surfactants 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 preservatives include parabens, methyl p - hydroxybenzoate, ethyl p - hydroxybenzoate, propyl p - hydroxybenzoate, butyl p - hydroxybenzoate, sodium benzoate, and the like. Examples of fragrances 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; thymol, vanillin, ethyl vanillin, maltol, and ethyl maltol, and the like. Examples of medicinal ingredients and colorants include those described above. The above - mentioned components can be used alone or in combination of two or more.

[0060] The multi - dosage form foaming agent of the present invention is preferably used for attracting insects. Specifically, it is preferably used for the purpose of capturing and repelling insects, particularly mosquitoes, which are attracted and gathered by generating carbon dioxide by mixing the multi - dosage form foaming agent of the present invention and water.

[0061] The present invention further discloses the following [1] to

[42] . 〔1〕A agent containing a carbonate and B agent containing an organic acid having 2 to 6 carbon atoms, wherein the carbonate is one or more selected from alkali metal carbonates and alkali metal hydrogen carbonates, and at least one of the A agent and the B agent contains one or more water-insoluble compounds selected from organic compounds (excluding organic acids having 2 to 6 carbon atoms) with a solubility of 30 g or less in 100 g of water and inorganic compounds (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility of 30 g or less in 100 g of water, and is a multi-agent type foaming agent with a maximum length of 1 mm or more. 〔2〕The multi-agent type foaming agent according to 〔1〕, wherein at least one of the A agent and the B agent is a compression molded product or an extrusion granulated product containing the water-insoluble compound and having a maximum length of 1 mm or more. 〔3〕The multi-agent type foaming agent according to 〔1〕 or 〔2〕, wherein the A agent and the B agent are compression molded products or extrusion granulated products. 〔4〕A agent containing a carbonate and B agent containing an organic acid having 2 to 6 carbon atoms, wherein the carbonate is one or more selected from alkali metal carbonates and alkali metal hydrogen carbonates, and at least one of the A agent and the B agent contains one or more water-insoluble compounds selected from organic compounds (excluding organic acids having 2 to 6 carbon atoms) with a solubility of 30 g or less in 100 g of water and inorganic compounds (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility of 30 g or less in 100 g of water, and the A agent and the B agent are compression molded products or extrusion granulated products with a maximum length of 1 mm or more, and is a multi-agent type foaming agent. 〔5〕The multi-agent type foaming agent according to any one of 〔1〕 to 〔4〕, satisfying at least one of the following requirements (i) and (ii). Requirement (i): The mass ratio of the water-insoluble compound to the carbonate in the A agent (water-insoluble compound / carbonate) exceeds 0.04 and is 1 or less. Requirement (ii): The mass ratio of the water-insoluble compound to the organic acid in the B agent (water-insoluble compound / organic acid) exceeds 0.04 and is 1 or less. 〔6〕The multi-form foaming agent according to any one of 〔1〕 to 〔4〕, satisfying at least one of the following requirements (i) and (ii). Requirement (i): The mass ratio of the water-insoluble compound to the carbonate in the Agent A (water-insoluble compound / carbonate) is more than 0.04 and 0.5 or less. Requirement (ii): The mass ratio of the water-insoluble compound to the organic acid in the Agent B (water-insoluble compound / organic acid) is more than 0.04 and 0.5 or less. 〔7〕The multi-form foaming agent according to any one of 〔1〕 to 〔4〕, satisfying at least one of the following requirements (i) and (ii). Requirement (i): The mass ratio of the water-insoluble compound to the carbonate in the Agent A (water-insoluble compound / carbonate) is 0.05 or more and 0.4 or less. Requirement (ii): The mass ratio of the water-insoluble compound to the organic acid in the Agent B (water-insoluble compound / organic acid) is 0.05 or more and 0.4 or less. 〔8〕The multi-form foaming agent according to any one of 〔1〕 to 〔4〕, satisfying at least one of the following requirements (i) and (ii). Requirement (i): The mass ratio of the water-insoluble compound to the carbonate in the Agent A (water-insoluble compound / carbonate) is 0.08 or more and 0.3 or less. Requirement (ii): The mass ratio of the water-insoluble compound to the organic acid in the Agent B (water-insoluble compound / organic acid) is 0.08 or more and 0.3 or less. 〔9〕The multi-form foaming agent according to any one of 〔1〕 to 〔8〕, satisfying at least one of the following requirements (a) and (b). Requirement (a): The content of the water-insoluble compound in the Agent A is 3% by mass or more and 50% by mass or less. Requirement (b): The content of the water-insoluble compound in the Agent B is 3% by mass or more and 50% by mass or less. 〔10〕The multi-form foaming agent according to any one of 〔1〕 to 〔8〕, satisfying at least one of the following requirements (a) and (b). Requirement (a): The content of the water-insoluble compound in the Agent A is 4% by mass or more and 40% by mass or less. Requirement (b): The content of the water-insoluble compound in the Agent B is 4% by mass or more and 40% by mass or less. 〔11〕 The multi-agent type foaming agent according to any one of 〔1〕 to 〔8〕, satisfying at least one of the following requirement (a) and requirement (b). Requirement (a): The content of the water-insoluble compound in the Agent A is 5% by mass or more and 30% by mass or less. Requirement (b): The content of the water-insoluble compound in the Agent B is 5% by mass or more and 30% by mass or less. 〔12〕 The multi-agent type foaming agent according to any one of 〔1〕 to 〔8〕, satisfying at least one of the following requirement (a) and requirement (b). Requirement (a): The content of the water-insoluble compound in the Agent A is 7% by mass or more and 25% by mass or less. Requirement (b): The content of the water-insoluble compound in the Agent B is 7% by mass or more and 25% by mass or less. 〔13〕 The multi-agent type foaming agent according to any one of 〔1〕 to 〔12〕, wherein the maximum length of the Agent A containing the water-insoluble compound and the Agent B containing the water-insoluble compound is 1 mm or more, preferably 3 mm or more, more preferably 10 mm or more, and still more preferably 30 mm or more. 〔14〕 The multi-agent type foaming agent according to any one of 〔1〕 to 〔13〕, wherein the maximum length of the Agent A containing the water-insoluble compound and the Agent B containing the water-insoluble compound is preferably 80 mm or less, more preferably 60 mm or less, and still more preferably 50 mm or less. 〔15〕 The multi-agent type foaming agent according to any one of 〔1〕 to 〔14〕, wherein the maximum length of the Agent A containing the water-insoluble compound X and the Agent B containing the water-insoluble compound X is preferably 1 mm or more and 80 mm or less, more preferably 3 mm or more and 60 mm or less, and still more preferably 10 mm or more and 50 mm or less. 〔16〕 The multi-agent type foaming agent according to any one of 〔1〕 to 〔15〕, wherein the mass of the Agent A is preferably 5 g or more, more preferably 10 g or more, and still more preferably 20 g or more, and is preferably 200 g or less, more preferably 120 g or less, and still more preferably 60 g or less in total. 〔17〕The mass of the agent A is preferably 5 g or more and 200 g or less in total, more preferably 10 g or more and 120 g or less, and still more preferably 20 g or more and 60 g or less. The multi-agent type foaming agent according to any one of 〔1〕~〔15〕. 〔18〕The mass of the agent B is preferably 5 g or more in total, more preferably 10 g or more, and still more preferably 20 g or more, and is preferably 200 g or less, more preferably 120 g or less, and still more preferably 60 g or less. The multi-agent type foaming agent according to any one of 〔1〕~〔17〕. 〔19〕The mass of the agent B is preferably 5 g or more and 200 g or less in total, more preferably 10 g or more and 120 g or less, and still more preferably 20 g or more and 60 g or less. The multi-agent type foaming agent according to any one of 〔1〕~〔17〕. 〔20〕The organic compound contains one or more selected from fats and oils, waxes, fatty acids or their salts, alcohols, ether compounds, ester compounds, and polymer compounds, and hydrocarbons. The multi-agent type foaming agent according to any one of 〔1〕~〔19〕. 〔21〕The organic compound is at least one selected from fatty acids or their metal salts, glycerin or polyglycerin fatty acid esters, aliphatic alkyl esters, sorbitol or sorbitan fatty acid esters, and sucrose fatty acid esters. The multi-agent type foaming agent according to any one of 〔1〕~〔20〕. 〔22〕The inorganic compound contains one or more selected from alkaline earth metal salts, metal oxides, metal hydroxides, and silicate compounds. The multi-agent type foaming agent according to any one of 〔1〕~〔21〕. 〔23〕The inorganic compound is hydrophobized. The multi-agent type foaming agent according to any one of 〔1〕~〔22〕. 〔24〕The inorganic compound is hydrophobic silica. The multi-agent type foaming agent according to any one of 〔1〕~〔23〕. 〔25〕The dissolution amount of the water-insoluble compound in 100 g of water is preferably 0 g or more and 10 g or less, more preferably 0 g or more and 5 g or less, still more preferably 0 g or more and 3 g or less, and still more preferably 0 g or more and 1 g or less. The multi-agent type foaming agent according to any one of 〔1〕~〔24〕. 〔26〕The multi-component foaming agent according to any one of 〔1〕~〔25〕, wherein the molecular weight of the organic compound is preferably 70 or more, more preferably 100 or more, and still more preferably 200 or more. 〔27〕The multi-component foaming agent according to any one of 〔1〕~〔26〕, wherein the molecular weight of the organic compound is preferably 10,000 or less, more preferably 6,000 or less, and still more preferably 1,000 or less. 〔28〕The multi-component foaming agent according to any one of 〔1〕~〔27〕, wherein the molecular weight of the organic compound is preferably 70 or more and 10,000 or less, more preferably 100 or more and 6,000 or less, and still more preferably 200 or more and 1,000 or less. 〔29〕The multi-component foaming agent according to any one of 〔1〕~〔28〕, wherein the carbonate is at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates. 〔30〕The multi-component foaming agent according to any one of 〔1〕~〔29〕, wherein the content of the carbonate in the 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 still more preferably 75% by mass or more and 100% by mass or less. 〔31〕The multi-component foaming agent according to any one of 〔1〕~〔29〕, wherein the content of the carbonate in Agent A 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. 〔32〕The multi-component foaming agent according to any one of 〔1〕~〔31〕, wherein the organic acid is at least one selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, citric acid, and pyrrolidone carboxylic acid. 〔33〕The multi-component foaming agent according to any one of 〔1〕~〔32〕, wherein the content of the organic acid in the 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 still more preferably 75% by mass or more and 100% by mass or less. 〔34〕The content of the organic acid in the agent B 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, still more preferably 75% by mass or more and 93% by mass or less. The multi-agent type foaming agent according to any one of 〔1〕~〔32〕. 〔35〕The agent A and the agent B are a compression molded product or an extrusion granulated product containing the water-insoluble compound and having a maximum length of 1 mm or more. The multi-agent type foaming agent according to any one of 〔1〕~〔34〕. 〔36〕At least one of the agent A and the agent B is an extrusion granulated product, and the length of the extrusion granulated product is preferably 1 mm or more, more preferably 2 mm or more, preferably 30 mm or less, more preferably 10 mm or less, still more preferably 5 mm or less. The multi-agent type foaming agent according to any one of 〔1〕~〔35〕. 〔37〕At least one of the agent A and the agent B is a compression molded product, and the compression molded product is a tablet or a briquette. The multi-agent type foaming agent according to any one of 〔1〕~〔36〕. 〔38〕At least one of the agent A and the agent B is a compression molded product, and the thickness of the compression molded product is preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more, preferably 50 mm or less, more preferably 40 mm or less, still more preferably 30 mm or less. The multi-agent type foaming agent according to any one of 〔1〕~〔37〕. 〔39〕A method for generating carbon dioxide by mixing the multi-agent type foaming agent according to any one of 〔1〕~〔38〕 with water. 〔40〕A method for producing the multi-agent type foaming agent according to any one of 〔1〕~〔38〕, which includes a step of mixing the powdery water-insoluble compound with the carbonate or the organic acid, or a step of mixing the molten water-insoluble compound with the carbonate or the organic acid. 〔41〕Use of the multi-agent type foaming agent according to any one of 〔1〕~〔38〕 for attracting insects. 〔42〕A method for attracting insects using the multi-agent type foaming agent according to any one of 〔1〕~〔38〕.

Examples

[0062] 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 compositions in the table are the values of the solid content.

[0063] [Measurement Method] <Average particle diameter of carbonate, organic acid, organic compound X, and inorganic compound X> The average particle diameters of the carbonate and the organic acid are 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. More specifically, after vibrating for 5 minutes using sieves of 2000, 1400, 1000, 710, 500, 355, 250, 180, 125, 90, 63, and 45 μm specified in JIS Z 8801-1 (established on May 20, 2000, and last revised on November 20, 2006), the 50% median diameter is calculated for the undersize mass distribution by the sieving method, and this is taken as the average particle diameter. Specifically, the sieves of 2000, 1400, 1000, 710, 500, 355, 250, 180, 125, 90, 63, and 45 μm specified in JIS Z 8801-1 (established on May 20, 2000, and last revised on November 20, 2006) are stacked in order from the sieve with the smallest mesh opening on the tray, 100 g of granules are added from above the uppermost 2000-μm sieve, covered, and attached to a rotary tap type sieve shaker (manufactured by Hirate Seisakusho Co., Ltd., tapping 156 times / minute, rolling: 290 times / minute), and after vibrating for 5 minutes, the mass of the granules remaining on each sieve and the tray is measured, and the mass ratio (%) of the granules on each sieve is calculated. The particle diameter at which the cumulative sum of the mass ratios of the granules on the sieves with smaller mesh openings from the tray reaches 50% is taken as the average particle diameter. The average particle diameter of organic compound X means the number average value of 50 randomly extracted ones observed with an optical microscope and uses the major axis (the length of the straight line connecting the points farthest apart on the surface of the particle). The average particle diameter of the inorganic compound means the number average value of the major axes (the length of the straight line connecting the points farthest apart on the surface of the particle) of 50 randomly extracted ones observed with a scanning electron microscope or an optical microscope (10 μm or more).

[0064] <Method for evaluating hardness> The hardness of the compression-molded tablets was measured using a digital hardness tester KHT-40N manufactured by Fujiwara Seisakusho Co., Ltd. The hardness of the extrusion granulated product was measured using a particle hardness measuring device Granot manufactured by Okada Seiko Co., Ltd. In both hardness measuring devices, the load is measured when the descending terminal presses and breaks the sample. The unit is N, and "≧400" means that the hardness is 400 N or more. Also, the cells marked with diagonal lines mean that the measurement was not performed.

[0065] <Method for evaluating foaming amount> (Method for evaluating carbon dioxide emission) Tablets, extrusion granulated products, or powders of Agent A and Agent B were placed at the bottom of a 1 L transparent plastic beaker (outer body diameter 130 mm, height 150 mm, manufactured by Nichio Hansen Co., Ltd.) with the distance between Agent A and Agent B at intervals of 50 mm (Agent A and Agent B as they are). Note that the acid and alkali were used in an equivalent ratio of 1:1 so that the mass of sodium bicarbonate (sodium hydrogen carbonate) in Agent A was 37.8 g (0.45 mol), the mass of fumaric acid in Agent B was 26.1 g (0.225 mol), and the mass of citric acid in Agent B was 28.8 g (0.15 mol). Next, 300 g of ion-exchanged water was gently poured along the wall of the beaker so that the position of the agent would not change as much as possible. Then, to suppress the volatilization of the ion-exchanged water, the beaker was covered with wrap (made of polyvinylidene chloride). Note that for the purpose of releasing the generated carbon dioxide, approximately 20 small-diameter holes (diameter 0.4 mm) were opened evenly in the wrap. After adding water, the mass of the beaker (including the contents of the beaker) was measured at a predetermined time, and the mass of the beaker (including the contents of the beaker) was measured 10 minutes after the above time. The carbon dioxide foaming amount (for 10 minutes) was calculated from the following formula. Foaming amount (mL / min) = (Mass change amount in 10 minutes [g]) / 44 (Carbon dioxide molecular weight) × 22.4 × 1,000 / 10 [min]

[0066] In this production example and comparative production example, the following raw materials were used. The dissolution amount means the dissolution amount at 25 °C with respect to 100 g of water. (Agent A: carbonate A) · Baking soda: manufactured by Tosoh Corporation, sodium bicarbonate P, average particle size 100 μm (Agent B: organic acid B) · Fumaric acid: manufactured by Kawasaki Kasei Kogyo Co., Ltd., fumaric acid, average particle size 110 μm · Citric acid: manufactured by SIGMA-ALDRICH, reagent, average particle size 420 μm ground in a mortar, average particle size 120 μm (Organic compound X) · PEG: manufactured by Kao Corporation, K-PEG6000LA, melting point about 60 - 70 °C, molecular weight 8,500 · Calcium stearate: manufactured by Fujifilm Wako Pure Chemical Corporation, reagent, melting point 179 - 180 °C · Lauric acid: manufactured by Kao Corporation, Lunac L-98, melting point 42 °C · Oleic acid: manufactured by Kao Corporation, Lunac O-V, melting point 13 °C · Sodium laurate: manufactured by Kanto Chemical Co., Inc., reagent, melting point 310 °C, average particle size 50 μm · Lauric acid chip: manufactured by Kao Corporation, Lunac L-98, melting point 42 °C, average particle size 50 μm · Myristic acid: manufactured by Kao Corporation, Lunac MY-98, melting point 54 °C · Palmitic acid: manufactured by Kao Corporation, Lunac P-95, melting point 63 °C · Decanoic acid: manufactured by Fujifilm Wako Pure Chemical Corporation, reagent, melting point 30 - 32 °C · Octanoic acid: manufactured by Fujifilm Wako Pure Chemical Corporation, reagent, melting point 16 °C · Sucrose fatty acid ester: manufactured by Mitsubishi Chemical Foods Co., Ltd., S-070, fatty acid type: stearic acid, fatty acid purity 70% (Inorganic compound X) · Silica AC33: manufactured by PQ Corporation, Sorbosil AC33, average particle size 5.6 μm · Zeolite: manufactured by ZEOBUILDER, Zeolite, average particle size 1.0 μm · Calcium carbonate: manufactured by Sankyo Seifun Co., Ltd., Calci #2000, average particle size 1.8 μm · Silica OX50: manufactured by Evonik, AEROSIL@OX50, average particle size 40 nm · Silica RX50: manufactured by Evonik, AEROSIL@RX50, average particle size 40 nm, hydrophobic silica (hydrophobized with trimethylsilane) · Sodium chloride: manufactured by FUJIFILM Wako Pure Chemical Corporation, sodium chloride, average particle size 100 μm (Neutralizing agent) · 48% caustic soda: manufactured by FUJIFILM Wako Pure Chemical Corporation, reagent

[0067] Production Example of Agent A (Production Example 1: Dry blend) To 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), 600 g of sodium bicarbonate and 75 g of calcium stearate were added, mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25 °C to obtain a powder. 42.5 g of the obtained powder (37.8 g of sodium bicarbonate) was filled into a tableting cell with a diameter of 4 cm, put into a mortar for a tableting machine, and compression molded at a load of 86 kN for 30 seconds using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 15 mm (maximum length 40 mm).

[0068] (Production Example 2: Melt blend) To 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), 600 g of sodium bicarbonate was added. After confirming that the powder temperature was 60 °C or higher, 75 g of molten lauric acid was added, mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25 °C to obtain a powder. Using the said powder, tablets were obtained in the same manner as in Production Example 1.

[0069] (Production Example 3: Melt blend) To a 2L 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 40°C), 600 g of sodium bicarbonate and 31 g of oleic acid were added, mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above powder.

[0070] (Production Example 4: Dry Blend) To a 2L 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 30°C), 600 g of sodium bicarbonate and 75 g of lauric acid chips (average particle size 50 μm) pulverized in a mortar were added, mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above powder.

[0071] (Production Example 4-1: Dry Blend) A powder was obtained in the same manner as in Production Example 4 except that the amount of lauric acid chips was changed to 37 g. Using 40.2 g of the obtained powder (37.8 g of sodium bicarbonate), a tablet thickness of 14 mm was obtained in the same manner as in Production Example 1.

[0072] (Production Example 4-2: Dry Blend) A powder was obtained in the same manner as in Production Example 4 except that the amount of lauric acid chips was changed to 155 g. Using 47.6 g of the obtained powder (37.8 g of sodium bicarbonate), a tablet thickness of 17 mm was obtained in the same manner as in Production Example 1.

[0073] (Production Example 4-3: Dry Blend) Tablets were obtained in the same manner as in Production Example 4 except that compression molding was performed under a load of 14 kN.

[0074] (Production Example 4-4: Dry Blend) The powder obtained in Production Example 4 itself was used. The average particle size of the powder was 100 μm.

[0075] (Production Example 4-5: Dry Blend) A powder was obtained in the same manner as in Production Example 4, except that the lauric acid chips were replaced with 33.3 g and 33.3 g of hydrophobic silica RX-50 was further added. Using 42 g of the obtained powder (37.8 g of sodium bicarbonate), a tablet thickness of 15 mm was obtained in the same manner as in Production Example 1.

[0076] (Production Example 4-6: Dry Blend) A powder was obtained in the same manner as in Production Example 4, except that the lauric acid chips were replaced with 31.6 g. Using 39.8 g of the obtained powder (37.8 g of sodium bicarbonate), a tablet thickness of 14 mm was obtained in the same manner as in Production Example 1.

[0077] (Production Example 5: Dry Blend) To 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), 600 g of sodium bicarbonate and 75 g of sodium laurate (average particle size 50 μm) were added, mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Using the above powder, tablets were obtained in the same manner as in Production Example 1.

[0078] (Production Example 6: Neutralization Blend) To 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), 600 g of sodium bicarbonate was added and mixed for 3 minutes to confirm that the powder temperature reached 60°C or higher. Then, 24 g of 48% caustic soda (1-fold equivalent of myristic acid) was added and mixed for 25 minutes. Further, 66 g of molten myristic acid (73 g as sodium myristate) was added, mixed for 5 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Using the above powder, tablets were obtained in the same manner as in Production Example 1.

[0079] (Production Example 7: Neutralization Blend) 600 g of sodium bicarbonate was added to 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), and mixed for 3 minutes. After confirming that the powder temperature reached 60°C or higher, 22 g of 48% caustic soda (1 equivalent of palmitic acid) was added and mixed for 25 minutes. Further, 67 g of molten palmitic acid (73 g as sodium palmitate) was added, mixed for 5 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above - mentioned powder.

[0080] (Production Example 8: Neutralization Blend) 600 g of sodium bicarbonate was added to 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), and mixed for 3 minutes. After confirming that the powder temperature reached 60°C or higher, 28 g of 48% caustic soda (1 equivalent of lauric acid) was added and mixed for 25 minutes. Further, 67 g of molten lauric acid (75 g as sodium laurate) was added, mixed for 5 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above - mentioned powder.

[0081] (Production Example 9: Neutralization Blend) 600 g of sodium bicarbonate was added to 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), and mixed for 3 minutes. After confirming that the powder temperature reached 60°C or higher, 31.5 g of 48% caustic soda (1 equivalent of decanoic acid) was added and mixed for 25 minutes. Further, 65 g of decanoic acid (73.6 g as sodium decanoate) was added, mixed for 5 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above - mentioned powder.

[0082] (Production Example 10: Neutralization Blend) To 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), 600 g of sodium bicarbonate was added and mixed for 3 minutes. After confirming that the powder temperature reached 60°C or higher, 32.4 g of 48% caustic soda (1 equivalent of octanoic acid) was added and mixed for 25 minutes. Further, 56 g of octanoic acid (65 g as sodium octanoate) was added and mixed for 5 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above powder.

[0083] (Production Example 11: Neutralization Blend) To 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), 600 g of sodium bicarbonate was added. After confirming that the powder temperature reached 60°C or higher, 106 g of molten PEG was added and mixed for 3 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above powder.

[0084] (Production Example 12: Melting Blend) To 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), 600 g of sodium bicarbonate was added. After confirming that the powder temperature reached 60°C or higher, 49 g of molten sucrose stearate was added and mixed for 3 minutes, and then the mixture was taken out. The obtained mixture was received in a vat and cooled at 25°C to obtain a powder. Tablets were obtained in the same manner as in Production Example 1 using the above powder.

[0085] (Production Example 12-1: Melting Blend) Tablets were obtained in the same manner as in Production Example 12, except that the amount of sucrose stearate was changed to 32 g.

[0086] (Production Example 12-2: Melt Blending) Tablets were obtained in the same manner as in Production Example 12, except that the amount of sucrose stearate was changed to 38 g.

[0087] (Production Example 12-3: Melt Blending) 600 g of sodium bicarbonate was added to 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). After confirming that the powder temperature reached 60 °C or higher, 67 g of molten sucrose stearate was added and mixed for 3 minutes, and the mixture was taken out. The obtained mixture was subjected to extrusion granulation using a dome granulator (manufactured by Dalton: DG-L1, φ1.0 mm screen, rotation speed 20 rpm). The extruded granulated product was received in a vat and cooled at 25 °C, and then sized using a power mill (manufactured by Dalton: P-02S, φ2.5 mm screen) to obtain an extruded granulated product with a diameter of φ1.0 mm and a length of 2.5 mm (maximum length 2.5 mm).

[0088] (Production Example 12-4: Melt Blending) An extruded granulated product was obtained in the same manner as in Production Example 12-3, except that the amount of sucrose stearate was changed to 52 g.

[0089] (Production Example 12-5: Melt Blending) 0.21 g of the powder obtained in Production Example 12 (0.2 g of sodium bicarbonate) was filled into a tableting cell with a diameter of 0.5 cm and compression molded at a load of 86 kN for 1 second using a continuous tableting machine (manufactured by Ichibashi Seiki Co., Ltd., AUTOTAB-500) to obtain tablets with a diameter of φ5 mm and a thickness of 5.5 mm (maximum length 5.5 mm).

[0090] (Production Example 13) 37.8 g of sodium bicarbonate was filled into a tableting cell with a diameter of 4 cm, put into a mortar for a tableting machine, and compression molded at a load of 86 kN for 30 seconds using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 13 mm (maximum length 40 mm).

[0091] Production Example of Agent AB (Single-Formulation Type) (Production Example 14) 600 g of sodium bicarbonate was added to 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) and mixed for 3 minutes. After confirming that the powder temperature reached 60 °C or higher, 28 g of 48% caustic soda (1-fold equivalent of lauric acid) was added and mixed for 25 minutes. Further, 67 g of molten lauric acid (75 g as sodium laurate) was added and mixed for 5 minutes. The obtained mixture was received in a vat and cooled at 25 °C to obtain a powder. 37.8 g of the obtained powder and 26.1 g of fumaric acid were mixed for 3 minutes to obtain a powder. 68.5 g of the obtained powder (37.8 g of sodium bicarbonate) was compression molded in the same manner as in Production Example 1 to obtain tablets with a diameter of φ40 mm and a thickness of 25 mm.

[0092] Production Example of Agent B (Production Example 15) 26.1 g of fumaric acid was filled into a tableting cell with a diameter of 4 cm, put into a mortar for a tableting machine, and compression molded at a load of 86 kN for 30 seconds using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 10 mm (maximum length 40 mm).

[0093] (Production Example 16) 600 g of fumaric acid was added to 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). After confirming that the powder temperature reached 60 °C or higher, 74 g of molten lauric acid was added and mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25 °C to obtain a powder. 29.3 g of the obtained powder (26.1 g of fumaric acid) was filled into a tableting cell with a diameter of 4 cm, put into a mortar for a tableting machine, and compressed and molded for 30 seconds under a load of 86 kN using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 12 mm.

[0094] (Production Example 17) 600 g of fumaric acid and 74 g of sodium laurate were added to 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 30 °C), mixed for 3 minutes, and the mixture was taken out. The obtained mixture was received in a vat and cooled at 25 °C to obtain a powder. Tablets were obtained in the same manner as in Production Example 16 using the above powder.

[0095] (Production Example 18) 28.8 g of citric acid was filled into a tableting cell with a diameter of 4 cm, put into a mortar for a tableting machine, and compressed and molded for 30 seconds under a load of 86 kN using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 11 mm (maximum length 40 mm).

[0096] (Production Example 19) 26.1 g of fumaric acid was filled into a tableting cell with a diameter of 4 cm, put into a mortar for a tableting machine, and compressed and molded for 30 seconds under a load of 14 kN using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 10 mm (maximum length 40 mm).

[0097] (Production Example 20) Tablets were obtained in the same manner as in Production Example 16 except that 31.6 g of lauric acid was used instead.

[0098] (Production Example 21) Tablets were obtained in the same manner as in Production Example 17 except that 31.6 g of hydrophobic silica RX-50 was used instead of sodium laurate.

[0099] Examples 1 to 28, Comparative Examples 1 to 5 As shown in Table 1, the Agent A and Agent B obtained in each production example were combined to form a multi-agent foaming agent, and the foaming volume was measured according to the aforementioned method. The results are shown in Table 1.

[0100]

Table 1-1

[0101]

Table 1-2

[0102]

Table 1-3

[0103] According to the present invention, a multi-agent foaming agent excellent in sustained foaming property was obtained. When comparing Example 2 and Example 12, in Example 12 in which organic compound X was contained in both Agent A and Agent B, the foaming volume of carbon dioxide was well controlled, and the difference in the foaming volume after 24 hours and after 1 week was small. When comparing Examples 20 to 22 and Examples 15 to 17, it can be seen that when the agent containing organic compound X is a tablet, the foaming volume after 1 week is large. In addition, the measured value of the foaming volume after 1 hour may be reversed from the foaming volume after 24 hours, which is presumably because the agent was not stable immediately after formulation. On the other hand, in Comparative Example 1 that did not contain organic compound X, Comparative Example 2 that contained an organic compound with a dissolution amount in 100 g of water exceeding 30 g, and Comparative Example 3 that contained a water-soluble organic compound, sufficient sustained foaming property could not be obtained. Further, as shown in Comparative Example 4, even when containing organic compound X, when it was a single-agent foaming agent, sufficient sustained foaming property could not be obtained. Furthermore, even when using Agent A containing organic compound X, in Comparative Example 5 where Agent A was a powder, sufficient sustained foaming property could not be obtained.

[0104] Production Example of Agent A (Production Example 51) 37.8 g of sodium bicarbonate and 4.7 g of silica AC33, an inorganic compound, were added to a 100 mL beaker and mixed for 1 minute with a spatula until homogeneous throughout. 42.5 g of the resulting powder was filled into a tableting cell with a diameter of 4 cm, placed in a tableting mortar, and compression molded at a load of 86 kN for 30 seconds using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 25 mm.

[0105] (Production Example 52) Tablets were obtained in the same manner as in Production Example 51, except that 37.8 g of sodium bicarbonate and 4.7 g of zeolite, an inorganic compound, were added to a 100 mL beaker.

[0106] (Production Example 53) Tablets were obtained in the same manner as in Production Example 51, except that 37.8 g of sodium bicarbonate and 4.7 g of calcium carbonate, an inorganic compound, were added to a 100 mL beaker.

[0107] (Production Example 54) Tablets were obtained in the same manner as in Production Example 51, except that 37.8 g of sodium bicarbonate and 4.7 g of silica OX50, an inorganic compound, were added to a 100 mL beaker.

[0108] (Production Example 55) Tablets were obtained in the same manner as in Production Example 51, except that 37.8 g of sodium bicarbonate and 4.7 g of hydrophobic silica RX50, an inorganic compound, were added to a 100 mL beaker.

[0109] (Production Example 56) Tablets were obtained in the same manner as in Production Example 55, except that the amount of hydrophobic silica RX50, an inorganic compound, was changed to 3.3 g.

[0110] (Production Example 57) Tablets were obtained in the same manner as in Production Example 55, except that the amount of hydrophobic silica RX50, an inorganic compound, was changed to 2.0 g.

[0111] (Production Examples 58 and 59) 37.8 g of sodium bicarbonate was filled into a tableting cell with a diameter of 4 cm, put into a tableting mortar, and compression molded for 30 seconds with a load of 86 kN using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 20 mm.

[0112] (Production Example 61) The inorganic compound sodium chloride was pulverized in a mortar to obtain a powder with an average particle size of 100 μm. 37.8 g of sodium bicarbonate and 4.7 g of the pulverized sodium chloride were added to a 100 mL beaker and mixed for 1 minute with a spatula until the whole became uniform. Tablets were obtained in the same manner as in Production Example 51.

[0113] Production Example of Agent AB (Single-Formulation Type) (Production Example 60) 37.8 g of sodium bicarbonate and 4.7 g of the inorganic compound silica AC33 were added to a 100 mL beaker and mixed for 1 minute with a spatula until the whole became uniform. Further, 26.1 g of fumaric acid was added and mixed for 1 minute with a spatula until the whole became uniform. 68.6 g (37.8 g of sodium bicarbonate) of the obtained powder was filled into a tableting cell with a diameter of 4 cm, put into a tableting mortar, and compression molded for 30 seconds with a load of 86 kN using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 45 mm.

[0114] Production Example of Agent B (Production Example 62) 26.1 g of fumaric acid was filled into a tableting cell with a diameter of 4 cm, put into a mortar for the tableting machine, and compression molded for 30 seconds with a load of 86 kN using a tableting machine (model number: CD-20-20M) manufactured by Riken Kiki Co., Ltd. to obtain tablets with a diameter of φ40 mm and a thickness of 15 mm.

[0115] (Production Example 63) 26.1 g of fumaric acid and 3.2 g of the inorganic compound hydrophobic silica RX50 were added to a 100 mL beaker and mixed for 1 minute with a spatula until the whole became uniform. Tablets were obtained in the same manner as in Production Example 62.

[0116] Examples 51 to 59, Comparative Examples 51 to 53 As shown in Table 2, the A agent and the B agent obtained in each production example were combined to form a multi-agent type foaming agent, and the foaming amount was measured according to the method described below. The results are shown in Table 2.

[0117]

Table 2

[0118] According to the present invention, a multi-agent type foaming agent excellent in sustained foaming property was obtained. Comparing Examples 51 to 54 with Examples 55 to 58, it can be seen that Examples 55 to 58 using the hydrophobized inorganic compound X are excellent in the sustainability of carbon dioxide. Further, comparing Example 55 and 59, in Example 59 in which the inorganic compound X is contained in both the A agent and the B agent, the foaming amount of carbon dioxide was well controlled, and the difference in the foaming amount after 24 hours and after 1 week was small. The measured value of the foaming amount after 1 hour may reverse the foaming amount after 12 hours, which is presumably because the agent immediately after the preparation was not stable. On the other hand, in Comparative Example 51 not containing an inorganic compound, Comparative Example 52 which is a single-agent type, and Comparative Example 53 containing an inorganic compound highly soluble in water, sufficient sustained foaming property could not be obtained.

Industrial Applicability

[0119] According to the present invention, a multi-agent type foaming agent excellent in sustained foaming property is provided. The multi-agent type foaming agent of the present invention is particularly useful for attracting insects such as mosquitoes.

Claims

1. It contains Agent A containing a carbonate and Agent B containing an organic acid having 2 to 6 carbon atoms, wherein the carbonate is at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates, and each of Agent A and Agent B contains at least one water-insoluble compound selected from organic compounds (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water (25 °C, 1013.25 hPa) of 30 g or less and inorganic compounds (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility in 100 g of water (25 °C, 1013.25 hPa) of 30 g or less, and is an agent with a maximum length of 1 mm or more, wherein the organic compound contains at least one selected from fats and oils, waxes, fatty acids or their salts, alcohols, ether compounds, ester compounds, and hydrocarbons, and the inorganic compound contains at least one selected from alkaline earth metal salts, metal oxides, metal hydroxides, and silicate compounds, A multi-agent type foaming agent.

2. The multi-agent type foaming agent according to Claim 1, wherein at least one of Agent A and Agent B is a compression molded product or an extrusion granulated product with a maximum length of 1 mm or more and containing the water-insoluble compound.

3. It contains Agent A containing a carbonate and Agent B containing an organic acid having 2 to 6 carbon atoms, wherein the carbonate is at least one selected from alkali metal carbonates and alkali metal hydrogen carbonates, and each of Agent A and Agent B contains at least one water-insoluble compound selected from organic compounds (excluding organic acids having 2 to 6 carbon atoms) with a solubility in 100 g of water (25 °C, 1013.25 hPa) of 30 g or less and inorganic compounds (excluding alkali metal carbonates and alkali metal hydrogen carbonates) with a solubility in 100 g of water (25 °C, 1013.25 hPa) of 30 g or less, wherein the organic compound contains at least one selected from fats and oils, waxes, fatty acids or their salts, alcohols, ether compounds, ester compounds, and hydrocarbons, and the inorganic compound contains at least one selected from alkaline earth metal salts, metal oxides, metal hydroxides, and silicate compounds, A multi-agent type foaming agent, wherein both Agent A and Agent B are compression molded products or extrusion granulated products with a maximum length of 1 mm or more.

4. The multi-agent type foaming agent according to any one of Claims 1 to 3, which satisfies at least one of the following requirements (i) and (ii). Requirement (i): The mass ratio of the water-insoluble compound to the carbonate in the Agent A (water-insoluble compound / carbonate) is more than 0.04 and not more than 1. Requirement (ii): The mass ratio of the water-insoluble compound to the organic acid in the Agent B (water-insoluble compound / organic acid) is more than 0.04 and not more than 1.

5. The multi-agent type foaming agent according to any one of Claims 1 to 4, satisfying at least one of the following requirements (a) and (b). Requirement (a): The content of the water-insoluble compound in the Agent A is 3% by mass or more and 50% by mass or less. Requirement (b): The content of the water-insoluble compound in the Agent B is 3% by mass or more and 50% by mass or less.

6. The multi-agent type foaming agent according to any one of Claims 1 to 5, wherein the organic compound is at least one selected from fatty acids or their metal salts, glycerin or polyglycerin fatty acid esters, fatty acid alkyl esters, sorbitan fatty acid esters, and sucrose fatty acid esters.

7. The multi-agent type foaming agent according to any one of Claims 1 to 6, wherein the inorganic compound is hydrophobized.

8. The multi-agent type foaming agent according to any one of Claims 1 to 7, wherein the organic acid is one or more selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, citric acid, and pyrrolidonecarboxylic acid.

9. The multi-agent type foaming agent according to any one of Claims 1 to 8, wherein at least one of the Agent A and the Agent B is a compression molded product, and the compression molded product is a tablet or a briquette.

10. The multi-agent type foaming agent according to any one of Claims 1 to 9, wherein at least one of the Agent A and the Agent B is a compression molded product having a thickness of 3 mm or more.

11. A method for generating carbon dioxide, which comprises mixing the multi-agent type foaming agent according to any one of Claims 1 to 10 with water.

12. The method for producing a multi-agent type foaming agent according to any one of Claims 1 to 10, which comprises a step of mixing the water-insoluble compound with the carbonate or the organic acid.

13. Use of the multi-agent type foaming agent according to any one of Claims 1 to 10 for attracting insects.

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