Aqueous deodorizing composition

Abstract

To provide an aqueous deodorizing composition that has stronger deodorizing performance (more improved deodorizing performance) against odors emitted by pets (particularly odors based on cat urine), and that does not exhibit a decrease in deodorizing performance even in summer (improvement of summer storage stability of the deodorizing agent).SOLUTION: An aqueous deodorizing composition containing (A) a radical generation catalyst, (B) a radical generation source, (C) a nonionic surfactant, and (D) water, has stronger deodorizing performance against odors emitted by pets (particularly odors based on cat urine) and does not exhibit a decrease in deodorizing performance even in summer.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an aqueous deodorizing composition, and more particularly to an aqueous deodorizing composition for pets. [Background technology]

[0002] There is a demand for improved deodorization of odors emitted by pets (especially odors due to cat urine). Typical odors emitted by pets are odors of ammonia and acetic acid, and the odor due to cat urine is thought to be the odor of sulfur-based compounds, particularly thiol-based compounds.

[0003] Patent Document 1 discloses a cat urine treatment device that contains an antagonistic fragrance that inhibits the activation of human olfactory receptors caused by thiols derived from cat urine and the activation of human olfactory receptors caused by isovaleric acid, and the antagonistic fragrance is either or both of acetylcedrene and florhydral. The device discloses that the cat urine odor can be effectively suppressed (claims,

[0004] , see

[0008] ).

[0004] Patent Document 2 discloses a composition containing a radical-generating catalyst, a radical-generating source, a thickener, and water, and discloses that the composition can be used, for example, as a deodorant and can be safely applied to the skin, oral mucosa, hair, etc. of humans and animals (see claims

[0002] ,

[0063] ,

[0065] to

[0066] ). Patent Document 2 does not mention the odor of thiols derived from cat urine. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7148420 [Patent Document 2] WO2023 / 027134A1 Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, in addition to strengthening (improving) the deodorizing power of pet odors (especially odors caused by cat urine), there has been a demand, from the perspective of global warming, for deodorizing performance to not decrease even in the summer (extreme heat, about 40°C) (improving the storage stability of deodorizers in the summer).

[0007] Patent Documents 1 and 2 do not mention at all whether or not the deodorizing performance decreases in the summer (improvement of the storage stability of deodorants in the summer). For example, a hypochlorous acid aqueous solution is known as a pet deodorizer. However, the hypochlorous acid concentration in the hypochlorous acid aqueous solution decreases over time in the summer, resulting in poor storage stability. In addition, compositions that utilize radicals, such as those described in Patent Document 2, are less effective against cat urine odor. For these reasons, there is a demand for a deodorizer that has improved deodorizing performance against odors emitted by pets (particularly odors caused by cat urine) and improved storage stability in the summer. [Means for solving the problem]

[0008] As a result of extensive research, the present inventors have found that an aqueous deodorizing composition containing (A) a radical-generating catalyst, (B) a radical-generating source, (C) a specific surfactant, namely a nonionic surfactant, and (D) water is suitable for odors emitted by pets (particularly odors due to cat urine) and has excellent storage stability during the summer, leading to the completion of the present invention.

[0009] This specification includes the following forms. 1. An aqueous deodorizing composition comprising (A) a radical-generating catalyst, (B) a radical-generating source, (C) a nonionic surfactant, and (D) water. 2. The composition described in 1 above, wherein (C) comprises at least one selected from polyglycerin fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, and sugar fatty acid esters. 3. The composition according to 1 or 2 above, wherein (C) contains a polyglycerin fatty acid ester. 4. The composition according to any one of 1 to 3 above, wherein (A) the radical-generating catalyst contains an ammonium salt having a Lewis acidity of 0.4 eV or more. 5. The composition according to any one of 1 to 4 above, wherein (A) the radical-generating catalyst comprises an ammonium salt represented by the following chemical formula (I): [ka] In the above chemical formula (I), R 1 , R 2 , R 3 and R 4 are the same or different, each is hydrogen or an alkyl group, and may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X - is an anion. 6. The composition described in 5 above, wherein (A) the radical-generating catalyst comprises an ammonium salt represented by the following chemical formula (II): [ka] In the above chemical formula (II), R 21 , R 22 are the same or different, each is hydrogen or an alkyl group, and may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X - is an anion. 7. The composition according to any one of 1 to 4 above, wherein (B) the radical generating source comprises at least one selected from the group consisting of a haloid acid, a haloid ion, and a haloid salt. 8. An aqueous deodorizing composition for cats according to any one of 1 to 7 above. [Effects of the Invention]

[0010] The aqueous deodorizing composition of the present invention not only provides stronger (improved) deodorizing effect on odors emitted by pets (particularly odors due to cat urine), but also provides a deodorizer with excellent storage stability during the summer. DETAILED DESCRIPTION OF THE INVENTION

[0011] In one embodiment of the present invention, Provided is an aqueous deodorizing composition comprising (A) a radical-generating catalyst, (B) a radical-generating source, (C) a nonionic surfactant, and (D) water.

[0012] In this specification, the radical-generating catalyst (A) is a compound that can catalyze (promote) the generation of radicals from a radical-generating source, and is not particularly limited as long as the aqueous deodorant composition targeted by the present invention can be obtained, and any known compound can be used. The radical-generating catalyst (A) can be used alone or in combination of two or more types.

[0013] The radical-generating catalyst (A) preferably contains a Lewis acid, and preferably contains a Lewis acid having a Lewis acidity of 0.4 eV or more. The upper limit of the Lewis acidity of the Lewis acid is not particularly limited, but a Lewis acid of 20 eV or less is preferred. The Lewis acidity can be measured, for example, by the methods described in Ohkubo, K.; Fukuzumi, S. Chem. Eur. J., 2000, 6, 4532; J. AM. CHEM. SOC. 2002, 124, 10270-10271; or J. Org. Chem. 2003, 68, 4720-4726. Specifically, it can be measured by the following method.

[0014] Lewis Acidity Measurement Method In the following reaction scheme (A), cobalt tetraphenylporphyrin (CoTPP), saturated O2, and the object to be measured for Lewis acidity (e.g., a cation of a metal, etc., in the following reaction scheme (A) are M n+ The change in the UV-visible absorption spectrum of acetonitrile (MeCN) containing the reaction product (represented by k cat ) can be used to calculate the ΔE value (eV), which is an index of Lewis acidity. A larger kcat value indicates a stronger Lewis acidity.

[0015] [ka]

[0016] Table 1 shows an example of the reaction rate constant between CoTTP and oxygen in the presence of a Lewis acid, which is an index of Lewis acidity measured (calculated) by the above-mentioned measurement method. In Table 1, kcat,M -2 s -1 The value expressed in lumo, eV is the LUMO energy level.

[0017] [Table 1]

[0018] In this specification, (A) the radical-generating catalyst preferably contains ammonium or a salt thereof having properties as a Lewis acid. Such ammonium may be, for example, a quaternary ammonium, or a tertiary, secondary, primary, or zeroth ammonium.

[0019] Examples of ammonium or a salt thereof include ammonium or a salt thereof that can act as a cationic surfactant, and ammonium or a salt thereof that can act as a quaternary ammonium cationic surfactant is preferred.

[0020] Examples of quaternary ammonium cationic surfactants include benzalkonium chloride, benzethonium chloride, cetylpyridinium chloride, hexadecyltrimethylammonium bromide, dequalinium chloride, edrophonium, didecyldimethylammonium chloride, tetramethylammonium chloride, tetrabutylammonium chloride, benzyltriethylammonium chloride, oxitropium, carbachol, glycopyrronium, safranine, sinapine, tetraethylammonium bromide, and hexadecyltrimethylammonium bromide. Examples include trimethylammonium, suxamethonium, sphingomyelin, denatonium, trigonelline, neostigmine, paraquat, pyridostigmine, phellodendrine, pralidoxime methyl iodide, betaine, betanin, bethanechol, betalain, lecithin, and cholines (choline chlorides such as benzoylcholine chloride and lauroylcholine chloride hydrate, phosphocholine, acetylcholine, choline, dipalmitoylphosphatidylcholine, and choline bitartrate). These may be used alone or in combination of two or more.

[0021] However, quaternary ammonium and its salts are not limited to compounds that can act as surfactants.

[0022] The ammonium may be, for example, ammonium represented by the following chemical formula (I): [ka]

[0023] In the above chemical formula (I), R 1 , R 2 , R 3 and R 4 are the same or different, each is hydrogen or an alkyl group, and may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X - is an anion. The alkyl group is preferably a linear or branched alkyl group having 1 to 40 carbon atoms.

[0024] The ammonium may be, for example, ammonia represented by chemical formula (II). [ka]

[0025] In the above chemical formula (II), R 21 , R 22 are the same or different, each is hydrogen or an alkyl group, and may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X - is an anion.

[0026] In the above chemical formula (II), R 21 is preferably an alkyl group having 5 to 40 carbon atoms, which may contain an ether bond, a carbonyl group, an ester bond, an amide bond, or an aromatic ring; R 22 is hydrogen or an alkyl group, which may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X - is an anion.

[0027] In the above chemical formula (II), R 22 is preferably a methyl group or a benzyl group, and the benzyl group may or may not have one or more hydrogen atoms on the benzene ring substituted with an arbitrary substituent, and examples of the arbitrary substituent include an alkyl group, an unsaturated aliphatic hydrocarbon group, an aryl group, a heteroaryl group, a halogen, a hydroxy group (-OH), a mercapto group (-SH), and an alkylthio group (-SR, where R is an alkyl group).

[0028] The ammonium represented by the chemical formula (II) is preferably ammonium represented by the following chemical formula (III). [ka]

[0029] In the above chemical formula (III), R 31 and X- is R in the chemical formula (II). 21 and X - are the same as

[0030] Examples of the ammonium represented by the chemical formula (I) include benzethonium chloride, benzalkonium chloride, hexadecyltrimethylammonium chloride, tetramethylammonium chloride, tetrabutylammonium chloride, and ammonium chloride, and it is preferable to use at least one selected from the group consisting of these. Among them, benzethonium chloride represented by the above chemical formula (II) is more preferable.

[0031] Benzethonium chloride (Bn-N + Cl - ) can be represented, for example, by the following chemical formula (IV): t Bu is a tertiary butyl group. Benzalkonium chloride can be, for example, represented by the formula (III): 31 is an alkyl group having 8 to 18 carbon atoms, and X - is the chloride ion.

[0032] [ka]

[0033] In the chemical formulas (I), (II) and (III), X - is any anion and is not particularly limited. - is not limited to a monovalent anion, but may be an anion of any valence, such as divalent or trivalent. When the anion has multiple charges, such as divalent or trivalent, the number of ammonium (monovalent) molecules in the chemical formulas (i), (II) and (III) is, for example, the number of anion molecules multiplied by the valence of the anion (for example, when the anion is divalent, it is twice the number of anion molecules). X -Examples of the ions include halogen ions (fluoride ions, chloride ions, bromide ions, iodide ions), acetate ions, nitrate ions, and sulfate ions.

[0034] In this specification, the ammonium may contain a plurality of ammonium structures (N+) in one molecule. Furthermore, the ammonium may form a dimer, a trimer, or the like by association of a plurality of molecules through π-electron interactions, for example.

[0035] In addition, in the present specification, when a compound (e.g., organic ammonium, etc.) has isomers such as tautomers or stereoisomers (e.g., geometric isomers, conformational isomers, and optical isomers), any isomer can be used unless otherwise specified.

[0036] Furthermore, when a compound (e.g., the organic ammonium) can form a salt, the salt may be an acid addition salt or a base addition salt. Furthermore, the acid that forms the acid addition salt may be an inorganic acid or an organic acid, and the base that forms the base addition salt may be an inorganic base or an organic base. Examples of inorganic acids include sulfuric acid, phosphoric acid, hydrofluoric acid, hydrochloric acid, hydrobromic acid, hydroiodic acid, hypofluorite acid, hypochlorous acid, hypobromite acid, hypoiodite acid, fluorite acid, chlorous acid, bromite acid, iodite acid, fluorine acid, chlorine acid, bromine acid, iodic acid, perfluorine acid, perchloric acid, perbromine acid, and periodic acid, but are not particularly limited as long as the aqueous composition of the present invention can be obtained. Examples of the organic acid include p-toluenesulfonic acid, methanesulfonic acid, oxalic acid, p-bromobenzenesulfonic acid, carbonic acid, succinic acid, citric acid, benzoic acid, and acetic acid, but are not particularly limited as long as the aqueous composition of the present invention can be obtained. Examples of the inorganic base include ammonium hydroxide, alkali metal hydroxides, alkaline earth metal hydroxides, carbonates, and bicarbonates. More specifically, examples include sodium hydroxide, potassium hydroxide, potassium carbonate, sodium carbonate, sodium bicarbonate, potassium bicarbonate, calcium hydroxide, and calcium carbonate. Examples of the organic base include ethanolamine, triethylamine, and tris(hydroxymethyl)aminomethane, but are not particularly limited as long as the aqueous composition of the present invention can be obtained. The method for producing the above-mentioned salt is not particularly limited, and can be produced, for example, by adding the above-mentioned acid and base to the compound using a known method.

[0037] In this specification, unless otherwise specified, a chain substituent (e.g., a hydrocarbon group such as an alkyl group or an unsaturated aliphatic hydrocarbon group) may be linear or branched, and the number of carbon atoms therein is not particularly limited, but is, for example, from 1 to 40, preferably from 1 to 32, more preferably from 1 to 24, even more preferably from 1 to 18, even more preferably from 1 to 12, particularly preferably from 1 to 6, and most preferably from 1 to 2 (the above-mentioned "1 or more" is "2 or more" in the case of an unsaturated hydrocarbon group). In the case of a cyclic group (e.g., an aryl group, a heteroaryl group, etc.), the number of ring members (the number of atoms constituting the ring) therein is not particularly limited, but is, for example, from 5 to 32, preferably from 5 to 24, more preferably from 6 to 18, even more preferably from 6 to 12, and even more preferably from 6 to 10. Furthermore, when isomers exist for a substituent or the like, either isomer may be used unless otherwise specified. For example, when simply referring to a naphthyl group, it may be a 1-naphthyl group or a 2-naphthyl group.

[0038] The aqueous composition according to the present invention preferably contains 0.01 to 1500 ppm by mass of (A) radical-generating catalyst. In this case, the concentration of the radical-generating catalyst in the composition may be sufficient, radical generation may be sufficient, and deodorizing effects may be sufficient. Furthermore, since the concentration of the radical-generating catalyst is not too high, it is more economical and safety may be ensured. The aqueous composition according to an embodiment of the present invention preferably contains 0.01 to 1000 ppm by mass of the radical-generating catalyst (A), more preferably 0.1 to 500 ppm by mass, even more preferably 1 to 200 ppm by mass, and particularly preferably 1 to 100 ppm by mass. In order to prevent the radical-generating catalyst (A) from forming micelles and thereby reducing the deodorizing effect of the composition, the concentration of the radical-generating catalyst (A) is preferably equal to or lower than the micelle limit concentration.

[0039] In this specification, the radical generating source (B) is a compound capable of generating radicals by the action of the radical generating catalyst (A), and is not particularly limited as long as the aqueous composition intended by the present invention can be obtained. Examples of the radical generating source (B) include halogen ions, hypohalite ions, halide ions, perhalide ions, etc., and it is preferable that the radical generating source contains at least one selected from the group consisting of these. The (B) radical generating source may include, for example, an oxoacid or a salt thereof (e.g., a halogen oxoacid or a salt thereof). Examples of the oxoacid include boric acid, carbonic acid, orthocarbonic acid, carboxylic acid, silicic acid, nitrous acid, nitric acid, phosphorous acid, phosphoric acid, arsenic acid, sulfurous acid, sulfonic acid, sulfinic acid, chromic acid, dichromate, and permanganic acid. Examples of halogen oxoacids include chlorine oxoacids such as hypochlorous acid, chlorous acid, chloric acid, and perchloric acid; bromine oxoacids such as hypobromous acid, bromous acid, bromic acid, and perbromic acid; and iodine oxoacids such as hypoiodous acid, iodous acid, iodic acid, and periodic acid. Examples of salts of these acids include alkali metal salts such as sodium and potassium.

[0040] The radical generating source preferably includes at least one selected from the group consisting of halous acid, halous acid ions, and halous acid salts. It is even more preferable that the halous acid, halous acid ions, and halous acid salts include chlorous acid, chlorous acid ions, and chlorous acid salts, respectively. This provides the advantageous effect of mild reactivity with the radical generating catalyst, making it easy to control the reaction. More specifically, sodium chlorite is even more preferable.

[0041] The aqueous composition according to the present invention preferably contains 0.01 to 1500 ppm by mass of the radical generating source (B). In this case, the concentration of the radical generating catalyst in the composition may be sufficient, radical generation may be sufficient, and deodorizing effects may be sufficient. Furthermore, the more appropriate concentration of the radical generating catalyst may be more economical and may ensure greater safety. The aqueous composition according to an embodiment of the present invention preferably contains the radical generating source (B) in an amount of 1 to 1000 ppm by mass, more preferably 10 to 500 ppm by mass, and even more preferably 50 to 250 ppm by mass.

[0042] The ratio of the concentration of the radical generating source to the concentration of the radical generating catalyst in the aqueous composition (radical generating source concentration / radical generating catalyst concentration) is not particularly limited as long as the aqueous composition intended by the present invention can be obtained, but is preferably 30 / 1 to 1 / 30, more preferably 10 / 1 to 1 / 10, and even more preferably 7 / 1 to 1 / 1. When the ratio of the concentration of the radical generating source to the concentration of the radical generating catalyst is 30 / 1 to 1 / 30, the deodorizing properties after storage are superior.

[0043] In this specification, (C) nonionic surfactant refers to a surfactant having a nonionic hydrophilic group and a lipophilic group, such as a polyalkylene glycol type surfactant or a polyhydric alcohol type surfactant, and is not particularly limited as long as the aqueous composition intended by the present invention can be obtained, and does not include compounds corresponding to the above-mentioned (A) or (B).

[0044] Polyalkylene glycol surfactants are surfactants that use, for example, higher alcohols, alkylphenols, fatty acids, higher alkylamines, fatty acid amides, fats and oils, and fatty acid esters of sorbitan as raw materials for the hydrophobic group, and alkylene oxides (preferably ethylene oxide) and polyethylene glycol as raw materials for the hydrophilic group. Polyhydric alcohol surfactants are surfactants that use, for example, fatty acids and fats and oils as raw materials for the hydrophobic group, and glycerin, pentaerythritol, sorbitol, sorbitan, sugars (for example, sucrose, glucose, etc.), and alkanolamines as raw materials for the hydrophilic group. Specific examples of nonionic surfactants include polyglycerin fatty acid esters such as polyglycerin caprylate, polyglycerin stearate, polyglycerin laurate, polyglycerin oleate, and polyglycerin myristate; polyoxyalkylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxypropylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearin ether, polyoxyethylene oleyl ether, and polyoxyethylene myristyl ether; polyoxyalkylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monolaurate and polyoxyethylene sorbitan oleate; polyoxyalkylene fatty acid esters such as polyethylene glycol monostearate and polyoxyethylene glycol distearate; and sugar fatty acid esters such as sucrose fatty acid esters and glucose fatty acid esters.

[0045] The aqueous deodorizing composition according to an embodiment of the present invention contains (C) a nonionic surfactant, which provides a stronger deodorizing effect and is safer for pets. The nonionic surfactant (C) preferably contains at least one selected from polyglycerin fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, and sugar fatty acid esters, and more preferably at least one selected from polyglycerin fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, and sucrose fatty acid esters. In this case, a higher deodorizing effect and higher storage stability can be obtained, and further, the surfactant is safer for pets. The nonionic surfactant (C) more preferably contains a polyglycerol fatty acid ester, which provides a higher deodorizing effect and higher storage stability, and is also safer for pets.

[0046] The aqueous composition according to the present invention preferably contains 0.01% by mass or more and 10% by mass or less of component (C). In this case, the concentration of component (C) in the composition may be sufficient, and the composition may have improved deodorizing properties and further improved stability in summer. The aqueous composition according to an embodiment of the present invention preferably contains 0.05% by mass or more and 8% by mass or less of component (C), more preferably 0.1% by mass or more and 5% by mass or less, and even more preferably 0.3% by mass or more and 3% by mass or less of component (C).

[0047] The aqueous composition according to an embodiment of the present invention contains water (D) as a medium for dissolving and / or dispersing the components (A), (B), and (C).

[0048] In this specification, examples of water include purified water, ion-exchanged water, distilled water, filtered water, and sterilized water, and are not particularly limited as long as the aqueous composition of the present invention can be obtained.

[0049] The aqueous composition according to an embodiment of the present invention may contain additives as appropriate in addition to the above-described components (A) to (D). Examples of additives include organic solvents and pH adjusters, and are not particularly limited as long as the aqueous composition according to the present invention can be obtained.

[0050] Examples of organic solvents include ketones such as acetone, nitriles such as acetonitrile, and alcohols such as ethanol and propanol, which can be used alone or in combination of two or more.

[0051] Examples of pH adjusters include potassium dihydrogen phosphate, sodium dihydrogen phosphate, dipotassium hydrogen phosphate, disodium hydrogen phosphate, trishydroxymethylaminomethane, trishydroxymethylaminomethane hydrochloride, ethylenediaminetetraacetic acid, etc. These may be used alone or in combination of two or more.

[0052] The aqueous composition according to an embodiment of the present invention can be produced by mixing components (A) to (D) and, if necessary, additives, and stirring to homogenize. However, the production method is not particularly limited as long as the aqueous composition intended by the present invention can be obtained.

[0053] The aqueous composition of the present invention preferably exhibits deodorizing properties for acetic acid, ammonia, and 3-mercapto-3-methyl-1-butanol (MMB) at 20°C. Furthermore, it preferably exhibits deodorizing properties even after storage in the summer. Evaluation of deodorizing properties is described in the Examples.

[0054] The aqueous composition of the present invention is preferably neutral or alkaline. In this case, the aqueous radicals (active species) generated in the aqueous composition can be maintained in this state. Although the radicals can be eliminated by the action of acetic acid, ammonia, or MMB, it is believed that new radicals are generated from the aqueous composition. The pH of the aqueous composition according to an embodiment of the present invention is more preferably 7-10, and even more preferably 7-9.

[0055] The aqueous composition of the present invention can be used as a deodorizer, and can be preferably used as a deodorizer for pets, and can be more preferably used as a deodorizer for cats. Therefore, in another embodiment, the present invention can provide an aqueous deodorizing composition for pets, and can preferably provide an aqueous deodorizing composition for cats.

[0056] The aqueous composition of the present invention can be used as a deodorizer by a conventionally known method. For example, the aqueous composition of the present invention can be applied to metal, plastic, glass, wood, paper, cloth, soil, leaves, people, pets (e.g., dogs, cats, especially cats), etc. by spraying.

[0057] The amount of use in the embodiment of the present invention can be appropriately selected depending on the target and the strength of the odor. For example, 2 More than 70ml / m 2 Less than 10 ml / m is preferred 2 More than 30ml / m 2 The preferred dosage of the present invention is 5 ml / m 2 More than 70ml / m 2 In the following cases, more economical, more effective deodorizing properties can be achieved more safely. [Example]

[0058] EXAMPLES Hereinafter, the present invention will be specifically and in detail explained using examples and comparative examples, but these examples are merely one embodiment of the present invention, and the present invention is not limited to these examples in any way.

[0059] The components used in this example are listed below. (A) Radical-generating catalyst (a1) Benzalkonium chloride (B) Radical source (b1) Sodium chlorite (b'2) Hypochlorous acid (1 g of sodium dichloroisocyanurate (FUJIFILM Wako Pure Chemical Industries, Ltd.) was dissolved in 3 L of purified water (FUJIFILM Wako Pure Chemical Industries, Ltd.) to produce hypochlorous acid water with an effective chlorine concentration of 200 ppm and a hypochlorous acid concentration of 0.03 mass %.)

[0060] (C) Nonionic surfactants (c1) Polyglycerin caprylic acid ester (SY Glystar MCA-750 (trade name) manufactured by Sakamoto Pharmaceutical Co., Ltd.) (c2) Polyglycerol stearate (SY Glyster MSW-7S (trade name) manufactured by Sakamoto Pharmaceutical Co., Ltd.) (c3) Polyglycerol laurate (SY Glyster ML-750 (trade name) manufactured by Sakamoto Pharmaceutical Co., Ltd.) (c4) Polyoxyethylene lauryl ether (Emulgen 109P (trade name) manufactured by Kao Corporation) (c5) Sucrose fatty acid ester (Ryoto Sugar Ester S-1570 (trade name) manufactured by Mitsubishi Chemical Corporation) (c'6) Sodium alkylbenzene sulfonate (Emeral 10G (trade name) manufactured by Kao Corporation) (c'7) Sodium polyoxyethylene lauryl ether sulfate (Emeral 270J (trade name) manufactured by Kao Corporation)

[0061] (D)Water (d1) Purified water (Fujifilm Wako Pure Chemical Industries, Ltd.) (E) pH adjuster (e1) Sodium dihydrogen phosphate dihydrate (manufactured by Nacalai Tesque, Inc.) (e2) Disodium hydrogen phosphate dodecahydrate (manufactured by Nacalai Tesque, Inc.)

[0062] These components were blended in the proportions (mass ratios) shown in Tables 1 and 2 to prepare aqueous deodorant compositions of Examples 1 to 8 and Comparative Examples 1 to 5.

[0063] Deodorizing (initial) test method As solutions of pet odors, a 1% (v / v) aqueous solution of acetic acid, a 10% by mass aqueous solution of ammonia, and a 1% (v / v) aqueous solution of 3-mercapto-3-methyl-1-butanol (MMB, cat urine odor) were used. To achieve an odor intensity of approximately 4, 3 μL of acetic acid solution, 200 μL of ammonia solution, or 6 μL of MMB solution was dropped into a 3 L sampling bag, and the bag was filled with odorless air.The bag was then left to stand for 15 minutes to allow each odor component to diffuse within the bag, preparing an odor-containing bag. A six-level odor evaluation scale is shown. Odor intensity Degree of strength 0 Odorless 1. A smell that can barely be detected 2. A faint smell that lets you know what it is 3. Easily detectable odors 4. Strong odor 5. Strong odor

[0064] Immediately after production, 0.4 mL of each aqueous deodorizing composition was dropped into the odor bag described above and allowed to stand for 15 minutes, after which the odor intensity inside the bag was sensorily evaluated using a 6-level odor intensity evaluation method. Each aqueous deodorizing composition was evaluated by six panelists, and the average value was used as the odor intensity. The difference between the average value and the blank was used as the deodorizing power of each deodorizing composition. Deodorizing power evaluation criteria Difference from blank judgement 3.5~5 ◎ 2~3.5 〇 1~2 △ Less than 1 ●

[0065] Deodorizing test method after summer storage (40°C, 1 month later) Each aqueous deodorizing composition was tested using the same method as the deodorizing property (initial) test method described above, except that it was used after being stored at 40° C. for one month. The results are shown in Tables 1 and 2.

[0066] [Table 2]

[0067] [Table 3]

[0068] None of the aqueous deodorizing compositions of Examples 1 to 8 had a deodorizing power of less than 1 in terms of deodorizing ability (initial) and deodorizing ability after summer storage (40°C, 1 month).

[0069] The aqueous deodorizing compositions of Comparative Examples 1 to 5 had a deodorizing power of less than 1 for either the deodorizing property (initial) or the deodorizing property after storage in summer (40° C., January). [Industrial Applicability]

[0070] The aqueous deodorizing composition of an embodiment of the present invention not only provides stronger (improved) deodorizing properties against odors emitted by pets (particularly odors caused by cat urine), but also excels in that its deodorizing performance does not decrease even in the summer (improved storage stability of the deodorizer in the summer).

Claims

1. An aqueous deodorizing composition comprising (A) a radical-generating catalyst, (B) a radical-generating source, (C) a nonionic surfactant, and (D) water.

2. The composition according to claim 1, wherein (C) comprises at least one selected from polyglycerin fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, and sugar fatty acid esters.

3. The composition of claim 1 , wherein (C) comprises a polyglycerol fatty acid ester.

4. The composition according to claim 1 , wherein the radical-generating catalyst (A) comprises an ammonium salt having a Lewis acidity of 0.4 eV or more.

5. The composition according to claim 1 , wherein the radical-generating catalyst (A) comprises an ammonium salt represented by the following chemical formula (I): 【Chemistry 1】 In the above chemical formula (I), R １ , R ２ , R ３ and R ４ are the same or different, each is hydrogen or an alkyl group, and may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X － is an anion.

6. The composition according to claim 5 , wherein the radical-generating catalyst (A) comprises an ammonium salt represented by the following chemical formula (II): 【Chemistry 2】 In the above chemical formula (II), R ２１ , R ２２ are the same or different, each is hydrogen or an alkyl group, and may contain an ether bond, a carbonyl group, an ester bond or an amide bond, or an aromatic ring; X － is an anion.

7. The composition according to claim 1, wherein the radical generating source (B) comprises at least one selected from the group consisting of a haloid acid, a haloid ion, and a haloid salt.

8. The aqueous deodorizing composition for cats according to claim 1.

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