Acidic deodorant composition

Abstract

To provide an acidic deodorant composition that has excellent storage stability and is effective in deodorizing a target malodor component.SOLUTION: An acidic deodorant composition is obtained by mixing water with (A) at least one selected from the group consisting of organic acid, inorganic acid, organic acid salt, and inorganic acid salt and (B) at least one selected from the group consisting of polyoxyethylene hardened castor oil, olefin sulfonic acid or salt thereof, polyoxyethylene alkyl ether sulfuric acid or salt thereof, amino acetic acid betaine, amide propyl betaine, alkylamide propyl hydroxy sultaine, alkyl amine oxide.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an acidic deodorant composition having excellent storage stability and excellent deodorizing effect against target malodorous components. [Background technology]

[0002] Products that are diluted with water when used can save space when transporting or storing in large quantities, and are therefore used in various fields such as sterilization, cleaning, and deodorization (Patent Documents 1 and 2). In addition, deodorants include basic deodorants that can deodorize acidic substances such as hydrogen sulfide and mercaptans, and acidic deodorants that can deodorize basic substances such as ammonia and amines. In particular, in the case of products in which acidic deodorants are diluted with water for use, the original solution before dilution is highly acidic, and therefore storage stability has been an issue. Furthermore, when actually diluted and used, there is a risk that sufficient deodorizing effect on the target odorous components cannot be obtained due to the deterioration of surfactants and other components. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-2337 A [Patent Document 2] JP 2016-169378 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide an acidic deodorant composition which is excellent in storage stability and in deodorizing effect against target malodorous components. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides an acidic deodorizing composition comprising (A) one or more selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts, and (B) one or more selected from the group consisting of polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or a salt thereof, polyoxyethylene alkyl ether sulfate or a salt thereof, aminoacetic acid betaine, amidopropyl betaine, alkylamidopropyl hydroxysultaine, and alkylamine oxide, mixed in water.

[0006] Moreover, the present invention is characterized in that, in the acidic deodorant composition having the above-mentioned constitution, the pH of the acidic deodorant composition is 0.5 to 4.5.

[0007] Further, the present invention is characterized in that the acidic deodorant composition having the above-mentioned constitution is used after being diluted 10 to 1000 times with water.

[0008] Moreover, the present invention is characterized in that in the acidic deodorant composition having the above-mentioned configuration, the component (A) has δ defined by the following formula (I) of 0.3 to 250. (Number 1) δ = [weight percent of component (A)] / [weight percent of component (B)] (I)

[0009] Furthermore, the present invention is characterized in that in the acidic deodorant composition having the above-mentioned configuration, the component (A) is a hydroxycarboxylic acid and / or a salt thereof.

[0010] The present invention is also characterized in that the acidic deodorant composition having the above-mentioned structure is for use in a toilet.

[0011] According to the first aspect of the present invention, by mixing (A) one or more selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts, and (B) one or more selected from the group consisting of polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or a salt thereof, polyoxyethylene alkyl ether sulfate or a salt thereof, aminoacetic acid betaine, amidopropyl betaine, alkylamidopropyl hydroxysultaine, and alkylamine oxide in water, an acidic deodorizing composition having excellent storage stability and excellent deodorizing effect against target malodorous components is obtained.

[0012] According to the second aspect of the present invention, by adjusting the pH of the acidic deodorizing composition of the first aspect to 0.5 to 4.5, the acidic deodorizing composition has superior storage stability and superior deodorizing effect against target malodor components, compared with a strongly acidic deodorizing composition having a pH of less than 0.5 or a weakly acidic deodorizing composition having a pH of more than 4.5.

[0013] According to the third aspect of the present invention, the acidic deodorizing composition of the first or second aspect is diluted 10 to 1000 times with water before use, thereby making the acidic deodorizing composition more economically excellent.

[0014] According to the fourth aspect of the present invention, in the acidic deodorizing composition of any one of the first to third aspects, by setting δ defined by the following formula (I) to 0.3 to 250, the acidic deodorizing composition has a more excellent deodorizing effect on the target malodor component. (Number 2) δ = [weight percent of component (A)] / [weight percent of component (B)] (I)

[0015] According to the fifth aspect of the present invention, in the acidic deodorizing composition of any one of the first to fourth aspects, by using a hydroxycarboxylic acid as the component (A), the acidic deodorizing composition has a more excellent deodorizing effect on the target malodor components.

[0016] According to the sixth aspect of the present invention, the acidic deodorizing composition according to any one of the first to fifth aspects is for use in a toilet, and therefore can more effectively deodorize the ammonia odor generated from human waste, which is a problem in toilets. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The acidic deodorant composition of the present invention will be described in detail below. Note that the embodiment described below is merely an example of the present invention, and is not intended to limit the technical scope of the present invention.

[0018] The acidic deodorant composition of the present invention is prepared by mixing (A) one or more selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts, and (B) one or more selected from the group consisting of polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or a salt thereof, polyoxyethylene alkyl ether sulfuric acid or a salt thereof, aminoacetic acid betaine, amidopropyl betaine, alkylamidopropyl hydroxysultaine, and alkylamine oxide in water to obtain an aqueous solution.

[0019] The component (A) to be blended in the acidic deodorant composition of the present invention is not particularly limited as long as it is one or more selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts. The blending amount of the component (A) in the acidic deodorant composition is not particularly limited, but is preferably 1 to 45% by weight, more preferably 3 to 40% by weight, even more preferably 6 to 30% by weight, and particularly preferably 10 to 20% by weight, in order to provide excellent storage stability and excellent deodorizing effect on the target malodorous components. If the blending amount of the component (A) is less than 1% by weight, the deodorizing effect on the malodorous components may decrease, and if the blending amount of the component (A) is more than 45% by weight, the storage stability under high temperature or low temperature conditions may decrease.

[0020] The amount of organic acid and / or inorganic acid in component (A) is not particularly limited, but is preferably 1% by weight or more, more preferably 5% by weight or more, because it has excellent deodorizing effect on target malodorous components. The amount of organic acid salt and / or inorganic acid salt is not particularly limited, but is preferably 1% by weight or more, more preferably 3% by weight or more, because it has excellent deodorizing effect on target malodorous components and also suppresses the generation of chlorine gas.

[0021] The organic acid is not particularly limited, but examples thereof include citric acid, lactic acid, malic acid, glycolic acid, 2-hydroxybutyric acid, 3-hydroxybutyric acid, glyceric acid, tartaric acid, 2-methylmalic acid, citric acid, isocitric acid, acetic acid, formic acid, propionic acid, butyric acid, valeric acid, caproic acid, oxalic acid, fumaric acid, succinic acid, tartaric acid, adipic acid, glutaric acid, maleic acid, malonic acid, 2-methylmalonic acid, azelaic acid, diglycolic acid, oxydisuccinic acid, carboxymethyloxysuccinic acid, tetramethylsuccinic acid, 1,2-cyclohexanedicarboxylic acid, 1,2-cycloheptanedicarboxylic acid, and the like. Examples of suitable organic acids include aliphatic organic acids such as carboxylic acids, 1,2-cyclooctanedicarboxylic acid, 1,2-cyclopentanedicarboxylic acid, glycine, aspartic acid, and glutamic acid, aminopolycarboxylic acids such as ethylenediaminediacetic acid, hydroxyethyliminodiacetic acid, iminodiacetic acid, nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, glycoletherdiaminetetraacetic acid, triethylenetetraminehexaacetic acid, and dienkol acid, and aromatic organic acids such as benzoic acid, phthalic acid, terephthalic acid, isophthalic acid, parahydroxybenzoic acid, and salicylic acid. Among these organic acids, hydroxycarboxylic acids such as citric acid, lactic acid, malic acid, glycolic acid, 2-hydroxybutyric acid, 3-hydroxybutyric acid, glyceric acid, tartaric acid, 2-methylmalic acid, isocitric acid, parahydroxybenzoic acid, and salicylic acid are preferred from the viewpoint of storage stability of the acidic deodorant composition, and citric acid, malic acid, tartaric acid, and lactic acid are also designated as food additives and are more preferred from the viewpoint of safety. These organic acids may be used alone or in combination of two or more. When optical isomers or geometric isomers based on asymmetric carbons exist, each of them or any mixture thereof is also included in the organic acid.

[0022] The inorganic acid is not particularly limited, but examples thereof include hydrochloric acid, sulfuric acid, sulfamic acid, etc. These inorganic acids may be used alone or in combination of two or more kinds.

[0023] The organic acid salt is not particularly limited, but includes metal salts such as sodium salts, potassium salts, calcium salts, and magnesium salts of organic acids. Specific examples of the organic acid salt include citrates such as trisodium citrate dihydrate and tripotassium citrate monohydrate, lactates such as sodium lactate, malates such as disodium DL-malate hemihydrate, glycolates such as sodium glycolate, hydroxybutyrates such as potassium hydroxybutyrate, 2-hydroxybutyrates such as sodium DL-2-hydroxybutyrate, 3-hydroxybutyrates such as sodium 3-hydroxybutyrate, glycerates such as sodium D-glycerate, tartrates such as sodium tartrate, 2-methylmalates such as disodium D-2-methylmalate, and isocitrate trisodium. Examples of the acid salt include citrates, benzoates such as sodium benzoate, acetates such as sodium acetate, succinates such as disodium succinate, sorbates such as potassium sorbate, propionates such as sodium propionate, butyrates such as sodium butyrate, valerates such as sodium valerate, caproates such as potassium caproate, phthalates such as potassium hydrogen phthalate, oxalates such as potassium oxalate monohydrate, malonates such as disodium malonate, adipicates such as disodium adipate, glutarates such as disodium glutarate, maleates such as disodium maleate, fumarates such as monosodium fumarate, parahydroxybenzoates such as sodium parahydroxybenzoate, and salicylates such as potassium salicylate. Among these organic acid salts, hydroxycarboxylates such as citrate, lactate, malate, glycolate, 2-hydroxybutyrate, 3-hydroxybutyrate, glycerate, tartrate, 2-methylmalate, isocitrate, parahydroxybenzoate, and salicylate are preferred, and citrate, malate, tartrate, and lactate are more preferred. These organic acid salts may be used alone or in combination of two or more. In addition, when optical isomers or geometric isomers based on asymmetric carbon exist, each of them or any mixture thereof is also included in the organic acid salt.

[0024] The inorganic acid salt is not particularly limited, but examples thereof include sulfates such as sodium sulfate, potassium sulfate, etc. These inorganic acid salts may be used alone or in combination of two or more.

[0025] The (B) component blended in the acidic deodorant composition of the present invention is a surfactant such as polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or its salt, polyoxyethylene alkyl ether sulfuric acid or its salt, aminoacetic acid betaine, amidopropyl betaine, alkylamidopropyl hydroxysultaine, and alkylamine oxide. These surfactants may be used alone or in combination of two or more. The blending amount of the (B) component in the acidic deodorant composition is not particularly limited, but is preferably 0.12 to 30% by weight, more preferably 0.15 to 10% by weight, even more preferably 0.30 to 5% by weight, and particularly preferably 0.50 to 3% by weight, in order to improve the storage stability and manufacturing cost of the acidic deodorant composition. If the blending amount of the (B) component is less than 0.12% by weight, the storage stability under high temperature or low temperature conditions may decrease, and if the blending amount of the (B) component is more than 30% by weight, the manufacturing cost may increase, and therefore the effect commensurate with the blending amount of the (B) component may not be obtained.

[0026] Of the (B) components, the polyoxyethylene hydrogenated castor oil is not particularly limited, but is preferably one having an average ethylene oxide addition mole number of 15 to 65, more preferably 25 to 55, and even more preferably 35 to 45. Specific examples include polyoxyethylene (20) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, polyoxyethylene (50) hydrogenated castor oil, and polyoxyethylene (60) hydrogenated castor oil, and examples of the oil that can be used include BROWNON RCW-20 (manufactured by Aoki Oil Industries Co., Ltd.), BROWNON RCW-40 (manufactured by Aoki Oil Industries Co., Ltd.), BROWNON RCW-50 (manufactured by Aoki Oil Industries Co., Ltd.), BROWNON RCW-60 (manufactured by Aoki Oil Industries Co., Ltd.), EMALEX HC-60 (manufactured by Nippon Emulsion Co., Ltd.), and NIKKOL HC-60 (manufactured by Nikko Chemicals Co., Ltd.). Of these polyoxyethylene hydrogenated castor oils, polyoxyethylene (40) hydrogenated castor oil is preferred.

[0027] Among the (B) components, the olefin sulfonic acid or its salt is not particularly limited, but has 10 to 20 carbon atoms, and the double bond may be internal or terminal. The "counter base" in the olefin sulfonic acid or olefin sulfonate salt includes ammonium salt, sodium salt, potassium salt, magnesium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, etc. Specific examples include α-olefin sulfonic acid, sodium α-olefin sulfonate, potassium α-olefin sulfonate, etc., and more specific examples include sodium α-tetradecene sulfonate, etc., and Liporan LJ-441 (manufactured by Lion Corporation), Liporan LJ-440 (manufactured by Lion Corporation), K Liporan PJ-400CJ (manufactured by Lion Corporation), etc. can be used.

[0028] Among the (B) components, the polyoxyethylene alkyl ether sulfate or its salt is not particularly limited, but is preferably polyoxyethylene alkyl ether sulfate or polyoxyethylene alkyl ether sulfate, and the "counter base" in the polyoxyethylene alkyl ether sulfate may be ammonium salt, sodium salt, potassium salt, magnesium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, etc. Among these, those having an average ethylene oxide addition mole number of 1 to 30 moles are preferred, and the alkyl group may be either linear or branched, and the number of carbon atoms of the alkyl group is preferably 8 to 22. Specifically, polyoxyethylene lauryl ether sodium sulfate, polyoxyethylene lauryl ether magnesium sulfate, polyoxyethylene lauryl ether triethanolamine sulfate, polyoxyethylene lauryl ether diethanolamine sulfate, polyoxyethylene lauryl ether monoethanolamine sulfate, polyoxyethylene lauryl ether ammonium sulfate, polyoxyethylene myristyl ether sodium sulfate, polyoxyethylene myristyl ether triethanolamine sulfate, and polyoxyethylene myristyl ether ammonium sulfate. Examples of the polyoxyethylene alkyl sulfate include, for example, Shinorin SPE-1350 (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1100 (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1150 (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1200K (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1200N (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1250 (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1300 (manufactured by New Japan Chemical Co., Ltd.), Shinorin SPE-1300N (manufactured by New Japan Chemical Co., Ltd.), Emal 270J (manufactured by Kao Corporation), Emal 327 (manufactured by Kao Corporation), etc. can be used. Among these polyoxyethylene alkyl sulfates or salts thereof, sodium polyoxyethylene lauryl ether sulfate, triethanolamine polyoxyethylene lauryl ether sulfate, or ammonium polyoxyethylene lauryl ether sulfate is preferred.

[0029] Among the (B) components, the aminoacetic acid betaine is not particularly limited, but examples thereof include lauryl dimethyl aminoacetic acid betaine, coconut oil alkyl methyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, lauric acid amidopropyl dimethyl aminoacetic acid betaine, etc., and MITAINE L (manufactured by Miwon Shoji Co., Ltd.) can be used. Among these aminoacetic acid betaines, lauryl dimethyl aminoacetic acid betaine is preferred.

[0030] Among the (B) components, the amidopropyl betaine is not particularly limited, but examples thereof include lauric acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, etc., and MITAINE LPB(N) (manufactured by Miwon Shoji Co., Ltd.) etc. can be used. Among these amidopropyl betaines, lauric acid amidopropyl betaine is preferred.

[0031] Among the (B) components, the alkylamidopropyl hydroxysultaine is not particularly limited, but examples thereof include cocamidopropyl hydroxysultaine, erucamidopropyl hydroxysultaine, lauramidopropyl hydroxysultaine, myristamidopropyl hydroxysultaine, oleamidopropyl hydroxysultaine, tallowamidopropyl hydroxysultaine, etc., and MIRATAINE CBS (manufactured by Solvay Nicca Co., Ltd.) can be used. Among these alkylamidopropyl hydroxysultaines, cocamidopropyl hydroxysultaine is preferred.

[0032] Among the (B) components, the alkylamine oxide is not particularly limited, and examples thereof include alkyldimethylamine oxide, dihydroxyethyl laurylamine oxide, etc. Examples of the alkyldimethylamine oxide include lauryldimethylamine oxide, myristyldimethylamine oxide, coconut alkyldimethylamine oxide, oleyldimethylamine oxide, etc., and Cadenax DM12D-W(C) (manufactured by Lion Corporation), Cadenax DMC-W (manufactured by Lion Corporation), etc. can be used. Among these alkylamine oxides, coconut alkyldimethylamine oxide is preferred.

[0033] The acidic deodorant composition of the present invention is an aqueous type, and water is mainly used as a solvent. Examples of water include purified water such as ion-exchanged water and reverse osmosis water, ordinary tap water, industrial water, deep sea water, etc.

[0034] The pH of the acidic deodorizing composition of the present invention is preferably 0.5 to 4.5, more preferably 1.0 to 4.0, and even more preferably 1.5 to 3.5. This results in an acidic deodorizing composition that is superior in storage stability and deodorizing effect on target malodorous components, compared with strongly acidic deodorizing compositions with a pH of less than 0.5 and weakly acidic deodorizing compositions with a pH of more than 4.5.

[0035] The acidic deodorant composition of the present invention can be used for deodorization as it is, but it is preferable to dilute it with water 10 to 1000 times before use. This makes it a more economical acidic deodorant composition. The water used for dilution is not particularly limited, but examples thereof include purified water such as ion-exchanged water and reverse osmosis membrane water, ordinary tap water, industrial water, deep sea water, etc.

[0036] In the acidic deodorant composition of the present invention, components (A) and (B) are blended so that δ defined by the following formula (I) satisfies 0.3 to 250, preferably 1.0 to 150, more preferably 1.5 to 100, and even more preferably 5 to 50. When δ satisfies the above range, the storage stability is excellent and the deodorizing effect against the target malodorous components is further improved. (Number 3) δ = [weight percent of component (A)] / [weight percent of component (B)] (I)

[0037] The acidic deodorant composition of the present invention may further contain a dye as component (C). The type of dye is not particularly limited, and examples thereof include food dyes and legal dyes, and examples thereof include blue dyes, red dyes, yellow dyes, and green dyes. Examples of blue dyes include Blue No. 1 and Blue No. 2, and examples of red dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 103, Red No. 104, Red No. 105, and Red No. 106, and examples of yellow dyes include Yellow No. 4, Yellow No. 5, and Yellow No. 203, and examples of green dyes include Green No. 3. The acidic deodorant composition of the present invention does not cause precipitation of the dyes even when these dyes are contained, and is an acidic deodorant composition with excellent storage stability and excellent usability. Among these dyes, Blue No. 1, Red No. 106, and Yellow No. 203 are preferred due to their excellent color development and solubility.

[0038] The acidic deodorizing composition of the present invention may be blended with other components such as insecticides, repellents, antibacterial agents, virus inactivating agents, anti-algae agents, antifungal agents, rust inhibitors, solvents, chelating agents, fragrances, deodorizing components, etc., within a range that does not impair the effects of the present invention, thereby imparting insecticidal effects, repellent effects, antibacterial effects, virus inactivating effects, anti-algae effects, anti-rust effects, cleaning effects, fragrances, deodorizing properties, etc.

[0039] The acidic deodorizing composition of the present invention thus obtained can effectively deodorize odors by applying or spraying the original solution or a diluted solution diluted 10 to 1000 times with water to places where odors are likely to occur, such as toilets, bathroom and kitchen drains, tile joints, and pools, places contaminated with feces, and trash cans containing feces, and is particularly suitable for use in toilets such as general household toilets and simple toilets where ammonia odors and amine odors are a problem. Examples of general household toilets include flush toilets and pit toilets. Examples of simple toilets include temporary toilets and temporary flush toilets at various construction sites, public toilets, toilets installed on trains, trains, ships, long-distance buses, etc., and other toilets installed in unit houses that are scheduled to be used for a certain period of time, toilets used in the event of a disaster, and portable toilets for nursing care, but are not limited to these. Among them, it is suitable for use in simple toilets, and is particularly suitable for use in tank-type toilets. For example, it can be added to the flush water tank installed in a tank-type toilet and diluted with water about 10 to 1000 times before use, or it can be placed in the waste tank installed in the tank-type toilet beforehand.

[0040] In addition, the deodorizing target of the acidic deodorizing composition of the present invention is not particularly limited, but includes acidic malodorous components such as methyl mercaptan and hydrogen sulfide, and basic malodorous components such as amines and ammonia, and is particularly effective in deodorizing basic malodorous components such as amines and ammonia.

[0041] The present invention is not limited to the above-mentioned embodiment, and various modifications are possible within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. The effects of the present invention will be explained in more detail below using examples, but the present invention is not limited to these examples. EXAMPLES

[0042] [Preparation of test solution] (A) Citric acid monohydrate, lactic acid, malic acid, sulfamic acid, sodium citrate, sodium sulfate, (B) MITAINE L (active ingredient; lauryl dimethylaminoacetic acid betaine, active ingredient concentration 30%, manufactured by Miwon Shoji Co., Ltd.), MITAINE LPB (active ingredient; lauryl amidopropyl dimethyl betaine, active ingredient concentration 35%, manufactured by Miwon Shoji Co., Ltd.), MIRATAINE CBS (active ingredient; cocamidopropyl hydroxysultaine, active ingredient concentration 44%, manufactured by Solvay Nicca Co., Ltd.), Cadenax DMC-W (active ingredient; coconut alkylamine oxide, active ingredient concentration 30%, manufactured by Lion Corporation), Brownon RCW-40 (active ingredient; polyoxyethylene (40) hydrogenated castor oil, active ingredient concentration 100%, manufactured by Aoki Oil & Fat Co., Ltd.), Shinorin SPE-1350 (active ingredient; sodium polyoxyethylene lauryl ether sulfate, active ingredient concentration 70%, manufactured by New Japan Chemical Co., Ltd.), Liporan LJ-441 (active ingredient; sodium α-olefin sulfonate, active ingredient concentration 37%, manufactured by Lion Corporation) (C) Blue No. 1, Red No. 106, and Yellow No. 203 were mixed in the mixing ratios (weight%) shown in Tables 1 and 2, and purified water was added to make 100% by weight to obtain the acidic deodorant composition of the present invention (Inventions 1 to 22).

[0043] (A) Citric acid monohydrate, sodium citrate, (B) DKS NL DASH408 (active ingredient; polyoxyalkylene lauryl ether, active ingredient concentration 100%, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Brownon EL-1507 (active ingredient; polyoxyethylene lauryl ether, active ingredient concentration 100%, manufactured by Aoki Oil & Fat Co., Ltd.), LAS (active ingredient; sodium linear alkylbenzene sulfonate, active ingredient concentration 28.5%, manufactured by NOF Corporation), Monogen Y-500T (active ingredient; sodium lauryl sulfate, active ingredient concentration 100%, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and (C) Blue No. 1 were mixed in the mixing ratios (weight %) shown in Table 3, and purified water was added to make 100% by weight to obtain acidic deodorant compositions of comparative examples (Comparative Examples 1 to 4).

[0044] [Test Example 1: Storage stability test of acidic deodorant composition (50°C)] The acidic deodorant compositions of Inventions 1 to 22 and Comparative Examples 1 to 4 were each placed in a transparent glass bottle and left in a thermostatic chamber at 50° C. After one week, they were removed from the thermostatic chamber and the liquid appearance was visually observed. The liquid appearance was evaluated according to the following criteria. (The test results are shown in Tables 1 to 3.) 〇: No abnormalities △: Slightly cloudy, separation or precipitation occurs ×: Cloudy, separation or precipitation occurs

[0045] [Test Example 2: Storage stability test of acidic deodorant composition (0°C)] The acidic deodorant compositions of Inventions 1 to 22 and Comparative Examples 1 to 4 were each placed in a transparent glass bottle and left in a thermostatic chamber at 0°C. After one week, the bottles were removed from the thermostatic chamber and the liquid appearance was visually observed. The liquid appearance was evaluated according to the following criteria. (The test results are shown in Tables 1 to 3.) 〇: No abnormalities △: Slight cloudiness, separation or precipitation occurs ×: Cloudy, separation or precipitation occurs

[0046] [Test Example 3: Color Tone Stability Test] The acidic deodorant compositions of inventions 1 to 22 were each placed in a transparent glass bottle and left at room temperature. After one week, the liquid appearance was visually observed. The liquid appearance was evaluated according to the following criteria. (The test results are shown in Tables 1 and 2.) ◎: No abnormalities ○: Almost no discoloration occurs ×: Discoloration occurs

[0047] [Test Example 4: Deodorizing effect test of diluted solution (ammonia)] The acidic deodorant compositions of present inventions 1 to 22 and comparative examples 1 to 4 were each diluted 100 times with water. 1 mL of each dilution and 10 μL of malodor solution (1 v / v% aqueous ammonia solution) were placed in an Erlenmeyer flask, which was then covered and left to stand. After 10 minutes, the ammonia concentration in the flask was measured with a detector tube (manufactured by Gastec Corporation). The malodor concentration when 1 mL of ion-exchanged water was added instead of the dilution was used as a control, and the deodorant rate was calculated. (The test results are shown in Tables 1 to 3.) ◎: Deodorizing rate of 98% or more 〇: Deodorizing rate 90-98% △: Deodorizing rate 60-90% ×: Deodorization rate less than 60%

[0048] From the results of Test Examples 1, 2, and 4, it was confirmed that all of the acidic deodorant compositions of Inventions 1 to 22 have excellent storage stability of the original solution under low temperature (0°C) and high temperature (50°C) conditions and excellent deodorant effect of the diluted solution. Among them, Inventions 1 to 3, 5 to 7, 11, 13, and 16 to 21 were confirmed to be more excellent in deodorant effect of the diluted solution. In addition, from the results of Test Example 3, Inventions 1 to 6 and 8 to 22, in which the component (B) is one or more selected from the group consisting of polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or a salt thereof, polyoxyethylene alkyl ether sulfuric acid or a salt thereof, aminoacetic acid betaine, amidopropyl betaine, and alkylamidopropyl hydroxysultaine, also had excellent color stability.

[0049] On the other hand, Comparative Examples 1 to 4, in which the component (B) is not one or more selected from the group consisting of polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or a salt thereof, polyoxyethylene alkyl ether sulfate or a salt thereof, aminoacetic acid betaine, amidopropyl betaine, alkylamidopropyl hydroxysultaine, and alkylamine oxide, were found to be unfavorable in terms of storage stability under high temperature conditions (Comparative Examples 1 and 2) or storage stability under low temperature conditions (Comparative Examples 3 and 4).

[0050] [Table 1]

[0051] [Table 2]

[0052] [Table 3]

[0053] [Test Example 5: Deodorizing effect test of acidic deodorizing composition (ammonia)] 1 mL of the acidic deodorant composition of invention 1 or invention 14 and 10 μL of a malodorous solution (1 v / v% ammonia aqueous solution) were placed in an Erlenmeyer flask, covered and left to stand. After 10 minutes, the ammonia concentration in the flask was measured with a detector tube (manufactured by Gastec Corporation). The malodorous concentration when 1 mL of ion-exchanged water was added instead of the dilution solution was used as a control, and the deodorant rate was calculated. As a result of the test, in both Invention 1 and Invention 14, the deodorizing rate for ammonia was 98% or more, and an excellent deodorizing effect was confirmed.

[0054] The acidic deodorizing composition of the present invention has excellent storage stability under both low-temperature and high-temperature conditions, and has an excellent deodorizing effect even as a diluted solution, making it a very useful acidic deodorizing composition.

Claims

1. one or more selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts, including at least an organic acid, mixed with at least water; The organic acid is one or more selected from the group consisting of citric acid, lactic acid, malic acid, glycolic acid, 2-hydroxybutyric acid, 3-hydroxybutyric acid, glyceric acid, tartaric acid, 2-methylmalic acid, isocitric acid, oxalic acid, fumaric acid, succinic acid, maleic acid, malonic acid, 2-methylmalonic acid, and diglycolic acid; the organic acid salt is a metal salt of the organic acid, The amount of the organic acid is 5% by weight or more, An acidic deodorizing composition having a pH of 1.5 to 3.

5.

2. The acidic deodorizing composition according to claim 1 , further comprising a dye.

3. 3. The acidic deodorizing composition according to claim 1, wherein the composition is used after being diluted 10 to 1,000 times with water.

4. 4. The acidic deodorizing composition according to claim 1, wherein the organic acid is present in an amount of 10% by weight or more.

5. 5. The acidic deodorizing composition according to claim 1, which is for use in a toilet.

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