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 that has excellent storage stability and is effective in deodorizing target malodorous components. [Background technology]

[0002] Products that are diluted with water before use can save space when transporting or storing large quantities, and are therefore used in a variety of fields, including sterilization, cleaning, and deodorization (Patent Documents 1 and 2). Known 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, when acidic deodorants are diluted with water for use, the undiluted solution is highly acidic, posing a challenge in terms of storage stability. Furthermore, when actually diluted and used, there is a risk that sufficient deodorizing effect against the target malodorous components may not be achieved due to deterioration of surfactants and other components. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-2337 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-169378 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an acidic deodorant composition which has excellent storage stability and excellent 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 obtained by mixing (A) one or more acids selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts, and (B) one or more acids 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.

[0006] Furthermore, 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] The present invention is also characterized in that the acidic deodorant composition having the above-mentioned constitution is used after being diluted 10 to 1000 times with water.

[0008] Furthermore, the present invention is characterized in that in the acidic deodorant composition having the above-mentioned constitution, 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 constitution, 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 can be obtained.

[0012] Furthermore, 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 deodorizing effect on target malodorous components compared to strongly acidic deodorizing compositions having a pH of less than 0.5 or weakly acidic deodorizing compositions 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 providing a more economical acidic deodorizing composition.

[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 adjusting 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 components. (Number 2) δ = [weight percent of component (A)] / [weight percent of component (B)] (I)

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

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

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

[0018] The acidic deodorizing composition of the present invention is prepared by mixing (A) one or more acids selected from the group consisting of organic acids, inorganic acids, organic acid salts, and inorganic acid salts, and (B) one or more acids 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 form an aqueous solution.

[0019] The component (A) blended in the acidic deodorizing 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 amount of component (A) blended in the acidic deodorizing composition is not particularly limited, but is preferably 1 to 45 wt %, more preferably 3 to 40 wt %, even more preferably 6 to 30 wt %, and particularly preferably 10 to 20 wt %, in order to achieve excellent storage stability and excellent deodorizing effect against target malodorous components. If the amount of component (A) blended is less than 1 wt %, the deodorizing effect against malodorous components may be reduced, while if the amount of component (A) blended is more than 45 wt %, the storage stability under high or low temperature conditions may be reduced.

[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 an excellent deodorizing effect on target malodorous components. The amount of organic acid salt and / or inorganic acid salt is also not particularly limited, but is preferably 1% by weight or more, more preferably 3% by weight or more, because it has an 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, 1,2-cyclohexane ... 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 in terms of storage stability of the acidic deodorant composition, and citric acid, malic acid, tartaric acid, and lactic acid are designated as food additives and are therefore more preferred in terms 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, these isomers and any mixtures thereof are 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.

[0023] The organic acid salt is not particularly limited, but examples thereof include metal salts such as sodium salts, potassium salts, calcium salts, and magnesium salts of organic acids. Specific examples thereof 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, adipates 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, with citrate, malate, tartrate, and lactate being 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 carbons exist, each of these isomers and any mixture thereof are 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 and potassium sulfate. These inorganic acid salts may be used alone or in combination of two or more.

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

[0026] Of the (B) components, the polyoxyethylene hydrogenated castor oil is not particularly limited, but preferably has 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. Examples of suitable polyoxyethylene hydrogenated castor oils include Braunon RCW-20 (manufactured by Aoki Oil & Fat Co., Ltd.), Braunon RCW-40 (manufactured by Aoki Oil & Fat Co., Ltd.), Braunon RCW-50 (manufactured by Aoki Oil & Fat Co., Ltd.), Braunon RCW-60 (manufactured by Aoki Oil & Fat Co., Ltd.), Emalex HC-60 (manufactured by Nippon Emulsion Co., Ltd.), and Nikkol HC0-60 (manufactured by Nikko Chemicals Co., Ltd.). Of these polyoxyethylene hydrogenated castor oils, polyoxyethylene (40) hydrogenated castor oil is preferred.

[0027] Among the components (B), the olefin sulfonic acid or its salt is not particularly limited, but may have 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 may be 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. More specific examples include sodium α-tetradecene sulfonate, etc. For example, Liporan LJ-441 (manufactured by Lion Corporation), Liporan LJ-440 (manufactured by Lion Corporation), K-Liporan PJ-400CJ (manufactured by Lion Corporation), etc. may be used.

[0028] Among the components (B), the polyoxyethylene alkyl ether sulfate or its salt is not particularly limited, but is preferably polyoxyethylene alkyl ether sulfate or polyoxyethylene alkyl ether sulfate. 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, preferably having 8 to 22 carbon atoms. Specific examples include sodium polyoxyethylene lauryl ether sulfate, magnesium polyoxyethylene lauryl ether sulfate, triethanolamine polyoxyethylene lauryl ether sulfate, diethanolamine polyoxyethylene lauryl ether sulfate, monoethanolamine polyoxyethylene lauryl ether sulfate, ammonium polyoxyethylene lauryl ether sulfate, sodium polyoxyethylene myristyl ether sulfate, triethanolamine polyoxyethylene myristyl ether sulfate, and ammonium polyoxyethylene myristyl ether sulfate. Examples include 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. Among these polyoxyethylene alkyl sulfates or salts thereof, sodium polyoxyethylene lauryl ether sulfate, triethanolamine polyoxyethylene lauryl ether sulfate, and ammonium polyoxyethylene lauryl ether sulfate are preferred.

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

[0030] Among the amidopropyl betaines of component (B), there are no particular limitations, but examples 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 alkylamidopropyl hydroxysultaines in component (B), there are no particular limitations, but examples include cocamidopropyl hydroxysultaine, erucamidopropyl hydroxysultaine, lauramidopropyl hydroxysultaine, myristamidopropyl hydroxysultaine, oleamidopropyl hydroxysultaine, tallowamidopropyl hydroxysultaine, etc., and MIRATAINE CBS (manufactured by Solvay Nicca Co., Ltd.) can also be used. Among these alkylamidopropyl hydroxysultaines, cocamidopropyl hydroxysultaine is preferred.

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

[0033] The acidic deodorizing 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, and deep sea water.

[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, which results in an acidic deodorizing composition that is superior in storage stability and deodorizing effect against target malodorous components compared to strongly acidic deodorizing compositions with a pH of less than 0.5 or weakly acidic deodorizing compositions with a pH of more than 4.5.

[0035] The acidic deodorizing composition of the present invention can be used for deodorizing as is, but is preferably used after diluting it 10 to 1000 times with water. This results in a more economical acidic deodorizing composition. The water used for dilution is not particularly limited, but examples include purified water such as ion-exchanged water and reverse osmosis water, ordinary tap water, industrial water, and deep sea water.

[0036] In the acidic deodorizing composition of the present invention, components (A) and (B) are blended so that δ, as 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 composition has excellent storage stability and an even more excellent deodorizing effect against target malodorous components. (Number 3) δ = [weight percent of component (A)] / [weight percent of component (B)] (I)

[0037] The acidic deodorizing composition of the present invention can further contain a dye as component (C). The type of dye is not particularly limited, but examples include food dyes and legally designated dyes, such as blue dyes, red dyes, yellow dyes, and green dyes. Examples of blue dyes include Blue No. 1 and Blue No. 2. 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. Examples of yellow dyes include Yellow No. 4, Yellow No. 5, and Yellow No. 203. Examples of green dyes include Green No. 3. Even when these dyes are incorporated into the acidic deodorizing composition of the present invention, the dyes do not precipitate, resulting in an acidic deodorizing composition with excellent storage stability and 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 ingredients such as insecticides, repellents, antibacterial agents, virus inactivating agents, anti-algae agents, anti-fungal 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, fragrance properties, deodorizing properties, etc.

[0039] The acidic deodorizing composition of the present invention thus obtained can be applied or sprayed as an undiluted 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 swimming pools, as well as places contaminated with feces and trash cans containing feces, to effectively deodorize odors. It is particularly suitable for use in toilets such as general household toilets and portable toilets where ammonia odors and amine odors are problematic. Examples of general household toilets include flush toilets and pit toilets. Examples of portable toilets include temporary toilets and flush toilets at various construction sites, public toilets, toilets installed on trains, trains, ships, long-distance buses, etc., as well as toilets installed in modular houses intended for use 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 these, the composition is particularly suitable for use in portable toilets, particularly tank-type toilets. For example, it can be added to the flush water tank of a tank-type toilet and diluted with water about 10 to 1000 times before use, or it can be added to the waste tank of a tank-type toilet beforehand.

[0040] Furthermore, the target of deodorization by the acidic deodorizing composition of the present invention is not particularly limited, but examples thereof include acidic malodorous components such as methyl mercaptan and hydrogen sulfide, and basic malodorous components such as amines and ammonia, and it is particularly effective in deodorizing basic malodorous components such as amines and ammonia.

[0041] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in 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. [Example]

[0042] [Preparation of test solution] (A) Citric acid monohydrate, lactic acid, malic acid, sulfamic acid, sodium citrate, sodium sulfate, (B) MITAINE L (active ingredient: lauryldimethylaminoacetic acid betaine, active ingredient concentration 30%, manufactured by Miwon Shoji Co., Ltd.), MITAINE LPB (active ingredient: laurylamidopropyldimethyl 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 blended in the blending ratios (wt%) shown in Tables 1 and 2, and purified water was added to make 100 wt%, to obtain acidic deodorizing compositions 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 Dai-ichi Kogyo Seiyaku Co., Ltd.), BRAWNON EL-1507 (active ingredient; polyoxyethylene lauryl ether, active ingredient concentration 100%, manufactured by Aoki Oil & Fat Industries 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 Dai-ichi Kogyo Seiyaku Co., Ltd.), and (C) Blue No. 1 were blended in the blending ratios (wt %) shown in Table 3, and purified water was added to make 100 wt %, to obtain acidic deodorizing compositions of the 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 bath at 50°C. After one week, the bottles were removed from the thermostatic bath 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

[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 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 〇: Almost no discoloration occurs ×: Discoloration occurs

[0047] [Test Example 4: Deodorizing effect test of diluted solution (ammonia)] The acidic deodorizing compositions of Inventions 1 to 22 and Comparative Examples 1 to 4 were each diluted 100-fold with water. 1 mL of each diluted solution and 10 μL of a 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 using a detector tube (manufactured by Gastec Corporation). The malodor concentration when 1 mL of ion-exchanged water was added instead of the diluted solution was used as a control, and the deodorizing 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% ×: Deodorizing rate less than 60%

[0048] The results of Test Examples 1, 2, and 4 confirmed that all of the acidic deodorizing compositions of Inventions 1 to 22 had excellent storage stability of the undiluted solution under low-temperature (0°C) and high-temperature (50°C) conditions, and excellent deodorizing effects of the diluted solution. Among them, Inventions 1 to 3, 5 to 7, 11, 13, and 16 to 21 were confirmed to have even better deodorizing effects of the diluted solution. Furthermore, the results of Test Example 3 confirmed that Inventions 1 to 6 and 8 to 22, in which Component (B) was 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 component (B) was not one or more selected from the group consisting of polyoxyethylene hydrogenated castor oil, olefin sulfonic acid or its salt, polyoxyethylene alkyl ether sulfate or its salt, aminoacetic acid betaine, amidopropyl betaine, alkylamidopropyl hydroxysultaine, and alkylamine oxide, were found to be undesirable 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 deodorizing composition of Invention 1 or Invention 14 and 10 μL of a 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 using a detector tube (manufactured by Gastec Corporation). The malodor concentration when 1 mL of ion-exchanged water was added instead of the dilution solution was used as a control, and the deodorization 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. (A) an organic acid; (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 at least water, The component (A) 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 blending amount of the component (A) is 5 to 45% by weight, the blending amount of the (B) component is 0.12 to 30% by weight, An acidic deodorizing composition having a pH of 1.5 to 3.

5.

2. An acidic deodorizing composition as described in Claim 1, wherein the component (A) is one or more selected from the group consisting of citric acid, lactic acid, and malic acid.

3. The acidic deodorizing composition according to claim 1 or 2, wherein component (B) is one or more selected from the group consisting of lauryl dimethyl aminoacetic acid betaine, lauryl amidopropyl dimethyl betaine, cocamidopropyl hydroxysultaine, coconut alkylamine oxide, polyoxyethylene (40) hydrogenated castor oil, sodium polyoxyethylene lauryl ether sulfate, and sodium α-olefin sulfonate.

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

5. 5. The acidic deodorizing composition according to claim 1, wherein the composition is used after being diluted 10 to 1000 times with water.

6. 6. The acidic deodorizing composition according to claim 1, wherein the blending amount of the component (A) is 10% by weight or more.

7. 7. The acidic deodorizing composition according to claim 1, which is used for a toilet.

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