Dishwasher detergent composition

Abstract

To provide a dishwasher detergent composition that can achieve both low foaming and cleaning performance, which are in a trade-off relationship, regardless of the size of the dishwasher, and that can also remove and suppress fogging on the glass surface of the dishwasher. [Solution] A dishwasher detergent composition comprising component (A) and component (B), wherein component (A) is an acyl amino acid-based surfactant and component (B) is a chelating agent.

Description

[Technical Field]

[0001] This invention relates to a dishwasher detergent composition. [Background technology]

[0002] In recent years, the number of single-person households has been increasing, and is expected to reach approximately 40% by 2040. The market for dishwashers is heating up in response to this growing need, with various companies releasing dishwashers designed for small households and single individuals. However, these smaller dishwashers differ significantly from conventional larger models, creating new challenges.

[0003] The main differences from conventional products include (1) reduced water usage, (2) increased range of detergent usage, and (3) improved design due to the installation on a glass surface. Regarding (1) above, dishwashers that reduce water usage have appeared from the perspective of water conservation. Regarding (2) above, there is a need for a dishwasher detergent composition that can be used in dishwashers of various sizes and corresponds to the amount of detergent required. Regarding (3) above, most conventional dishwashers, both built-in and countertop types, do not have a glass window to view the washing process from the outside, but in recent years, there has been an increase in dishwashers that have a glass window.

[0004] However, regarding (1) and (2) above, using too much detergent carries the risk of increased foaming inside the dishwasher, while using too little detergent carries the risk of reduced cleaning performance. Regarding (3) above, since the inside of the glass surface of a dishwasher is not usually wiped after use, repeated washing can lead to a noticeable accumulation of protein, oil, and limescale buildup, which can detract from its appearance. Furthermore, this accumulation is also unhygienic.

[0005] Patent Document 1 discloses a dishwasher detergent that combines alkylamidoamine and an anionic surfactant, and is excellent in terms of low foaming properties and oil-cleaning power. Patent Document 2 discloses a dishwasher detergent that combines a surfactant, a chelating agent, and polylysine, and is excellent at preventing the accumulation of complex stains. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2015-10186 [Patent Document 2] Japanese Patent Publication No. 2020-97658 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] However, these technologies do not sufficiently reduce foaming. Furthermore, none of them consider maintaining the aesthetic appearance of the dishwasher's glass surface. Therefore, the present invention aims to provide a dishwasher detergent composition that can achieve both low foaming and cleaning performance, which are in a trade-off relationship, regardless of the size of the dishwasher, and furthermore, can remove fogging and suppress dirt accumulation on the glass surface of the dishwasher. [Means for solving the problem]

[0008] The present invention has the following aspects. [1] A dishwasher detergent composition containing component (A) and component (B), The aforementioned component (A) is an acyl amino acid-based surfactant, The aforementioned (B) component is a chelating agent, comprising a dishwasher detergent composition. [2] The dishwasher detergent composition according to [1], wherein component (B) is one or more selected from the group consisting of aminocarboxylic acid chelating agents and hydroxycarboxylic acid chelating agents. [3] Furthermore, it contains (C) component, The dishwasher detergent composition according to [1] or [2], wherein the (C) component is an anionic surfactant represented by the following formula (c). [ka] In formula (c), R c1 is a linear or branched alkyl group having 6 to 18 carbon atoms, or a linear or branched alkenyl group having 6 to 18 carbon atoms, and X is a single bond or -O-(AO) t -, where AO is an alkylene oxy group with 2 to 4 carbon atoms, t is an integer from 0 to 10 indicating the average number of repetitions, s is a number of 0s or 1s, u is a number of 0s or 1s, Z is a hydrogen atom, -CH2-CO2M c11 A group represented by -C(=O)-(OA) r -OR c2 It is a group represented by M c11 R is a hydrogen atom or counterion, c2 is a linear or branched alkyl group having 6 to 18 carbon atoms, or a linear or branched alkenyl group having 6 to 18 carbon atoms, Y is a single bond or -O-, and M c1 It is a counterion. [4] Furthermore, it contains component (D), The dishwasher detergent composition according to any one of [1] to [3], wherein the (D) component is an enzyme. [5] A dishwasher detergent composition according to any one of [1] to [4], which is liquid at 25°C. [Effects of the Invention]

[0009] The dishwasher detergent composition of the present invention can achieve both low foaming and cleaning performance, which are in a trade-off relationship, regardless of the size of the dishwasher, and can also remove fogging and suppress dirt accumulation on the glass surface of the dishwasher. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the present invention will be specifically described. However, the present invention is not limited to the following embodiments, and various modifications can be made within the scope of the gist thereof and implemented. In the present specification and claims, a numerical range represented by "~" means a numerical range including the numerical values before and after ~ as the lower limit value and the upper limit value. For example, A~B is synonymous with A or more and B or less.

[0011] ≪Detergent Composition for Dishwasher≫ The detergent composition for a dishwasher of the present invention (hereinafter, also simply referred to as "detergent composition") contains the following components (A) and (B). The detergent composition may further contain components other than the components (A) and (B) (hereinafter, also referred to as "optional components") as necessary, as long as the effects of the present invention are not impaired.

[0012] <Component (A)> The component (A) is an acyl amino acid-based surfactant. In the present specification, the acyl amino acid-based surfactant means an N-acyl amino acid-based surfactant in which the nitrogen atom of the amino acid forms an amide bond with a fatty acid. Here, the group derived from the fatty acid is also referred to as an "acyl group". Examples of the amino acid include α-amino acid and β-amino acid. By the detergent composition containing the component (A), compared with other anionic surfactants, the low foaming property can be further enhanced, and the detergency against protein and oil stains can be further enhanced.

[0013] Examples of the component (A) include anionic surfactants represented by the following formula (a).

[0014]

Chemical formula

[0015] In formula (a), R a1 is a linear or branched alkyl group having 6 to 20 carbon atoms, and R a2 is a hydrogen atom, or a linear or branched alkyl group having 1 to 6 carbon atoms, and Ra3 is a linear or branched alkyl group having 1 to 6 carbon atoms, which may have a hydrogen atom or a carboxyl group, and the carboxyl group is -CO2M a2 It may also form a salt represented by M a2 is a hydrogen atom or counterion, a is a number that is 0 or 1, M a1 This is a hydrogen atom or a counterion.

[0016] In formula (a), R a1 A linear alkyl group having 6 to 18 carbon atoms is preferred, and a linear alkyl group having 7 to 17 carbon atoms is more preferred. R a2 Preferably, the element is a hydrogen atom or a linear alkyl group having 1 to 6 carbon atoms, with a hydrogen atom being preferred. R a3 The preferred group is a linear alkyl group having 1 to 6 carbon atoms, which may have a hydrogen atom or a carboxyl group; more preferably a hydrogen atom, a carboxymethyl group, or a 2-carboxyethyl group; and even more preferably a hydrogen atom or a 2-carboxyethyl group. The carboxyl group is -CO2M a2 It may form a salt represented by . M a1 and M a2 Examples of suitable materials include hydrogen ions and materials that can form water-soluble salts. Among these, materials that can form water-soluble salts are preferred. Examples of materials that can form water-soluble salts include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as magnesium ions and calcium ions; ammonium ions; and alkanol ammonium ions such as monoethanolammonium ions (monoethanolammonium salt), diethanolammonium ions (diethanolammonium salt), and triethanolammonium ions (triethanolammonium salt). Among these, alkali metal ions are preferred from the viewpoint of preventing re-adhesion, sodium ions and potassium ions are more preferred, and sodium ions are particularly preferred. M a1 and M a2The counterions may be of the same type or different types, but counterions of the same type are preferred. Note M a1 and M a2 If the counterion is divalent or greater, M a1 and M a2 This is the number obtained by multiplying 1 by the valency, and represents a monovalent anion (-CO2). - It is assumed to be connected to ). For example, M a1 If it is a magnesium ion, a1 The number is 1 / 2.

[0017] As the anionic surfactant represented by formula (a), one or more selected from the group consisting of, for example, N-acyl-α-amino acid anionic surfactants represented by formula (a-1) and N-acyl-β-amino acid anionic surfactants represented by formula (a-2) are more preferable.

[0018] [ka]

[0019] In formula (a-1), R a1 , R a2 , R a3 M a2 and M a1 The same applies as described above.

[0020] [ka]

[0021] (a-2) Medium, R a1 , R a2 , R a3 M a2 and M a1 The same applies as described above.

[0022] From the viewpoint of cleaning power, fatty acids that form an amide bond with the amino group of an amino acid are preferably derived from saturated or unsaturated linear or branched fatty acids having 4 to 30 carbon atoms, more preferably from saturated or unsaturated linear or branched fatty acids having 6 to 26 carbon atoms, and even more preferably from saturated or unsaturated linear or branched fatty acids having 8 to 24 carbon atoms. Examples of such fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid. Among these, from the viewpoint of improving foam quality and storage stability, one or more selected from lauric acid, myristic acid, palmitic acid, and oleic acid are preferred, with lauric acid being more preferred. Furthermore, the fatty acid-derived group (acyl group) in the N-acyl amino acid may be derived from a mixture of the above fatty acids, for example, obtained from coconut oil, palm kernel oil, etc. Among these, those obtained from coconut oil fatty acids or palm kernel fatty acids are preferred, and those obtained from coconut oil fatty acids are more preferred.

[0023] The amino acid portion of the N-acyl amino acid or its salt is preferably a neutral amino acid selected from glycine and methylalanine, and an acidic amino acid selected from glutamic acid and aspartic acid, from the viewpoint of foam quality, cleaning power and rinsability, with glycine, methylalanine, and glutamic acid being more preferred. Component (A) is preferably N-acylglycine, N-acylmethylalanine, or N-acylglutamic acid, with N-acylglutamic acid being more preferred. From the viewpoint of cleaning power, the carboxyl group is counterion M a1 and M a2 It is even more preferable that a salt is formed.

[0024] The above N-acyl amino acids or their salts may be used individually or in combination of two or more. Among these, from the viewpoint of obtaining foam quality, cleaning power, and rinsability, one or more selected from N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-cocoyl glutamic acid, N-palm fatty acid glutamic acid, N-lauroyl aspartic acid, N-cocoyl glycine, N-cocoyl alanine, N-lauroyl alanine, N-lauroyl methyl alanine, and their salts are preferred, one or more selected from N-cocoyl glutamic acid, N-cocoyl glycine, N-lauroyl methyl alanine, and their salts are more preferred, and one or more selected from N-cocoyl glutamic acid and its salts are even more preferred.

[0025] Examples of salts of the above-mentioned N-acyl amino acids or their salts include, from the viewpoint of improving foaming and foam quality, alkali metal salts such as sodium and potassium; alkaline earth metal salts such as calcium and magnesium; other inorganic salts such as aluminum and zinc; ammonium salts; quaternary ammonium salts derived from organic amines such as monoethanolamine, diethanolamine, triethanolamine, AMP (2-amino-2-methyl-1-propanol), and 2-amino-2-hydroxymethyl-1,3-propanediol; and other organic salts such as quaternary ammonium salts derived from basic amino acids such as arginine, lysine, histidine, and ornithine. As for the salt of the N-acyl amino acid, from the viewpoint of availability, it is preferable that it be one or more salts selected from alkali metal salts, triethanolammonium salt (quaternary ammonium salt of protonated triethanolamine), and quaternary ammonium salt of protonated arginine (hereinafter also referred to as arginine salt), more preferably one or more salts selected from sodium salt, potassium salt, and triethanolammonium salt, even more preferably one or more salts selected from sodium salt and potassium salt, and sodium salt is particularly preferred.

[0026] Furthermore, when N-acyl amino acids are included, they are neutralized with a base before use. Examples of bases for neutralization include sodium hydroxide, potassium hydroxide, monoethanolamine, triethanolamine, diethanolamine, ammonia, AMP (2-amino-2-methyl-1-propanol), 2-amino-2-hydroxymethyl-1,3-propanediol, lysine, arginine, histidine, sodium acetate, potassium acetate, etc. From the viewpoint of improving foaming and foam quality, and from the viewpoint of availability, a base selected from sodium hydroxide, potassium hydroxide, arginine, and triethanolamine is preferred to form sodium salts, potassium salts, arginine salts, and triethanolammonium salts, and one or more bases selected from sodium hydroxide and potassium hydroxide are more preferred. In addition, various general bases such as sodium hydroxide, potassium hydroxide, triethanolamine, ammonia, lysine, arginine, and histidine may be used as needed to ensure that the pH of the detergent composition ultimately reaches the desired value. Furthermore, in any case, various common acids such as hydrochloric acid, sulfuric acid, phosphoric acid, acetic acid, citric acid, malic acid, lactic acid, fumaric acid, and succinic acid may be added to adjust the pH of the detergent composition. These (A) components may be a single type or a combination of two or more types.

[0027] (A) The content of component (A) is preferably 0.3 to 10% by mass, more preferably 0.5 to 5% by mass, and even more preferably 1 to 2% by mass, relative to the total mass of the detergent composition. If the content of component (A) is above the lower limit, the accumulation of protein and oil stains on the objects to be washed and inside the dishwasher can be suppressed. If it is below the upper limit, excessive foaming inside the dishwasher can be suppressed, and dishwasher malfunctions due to excessive foaming can be prevented.

[0028] <(B) component> (B) Component is a chelating agent. The detergent composition contains component (B), which chelates metal ions (e.g., calcium ions) in tap water, thereby enhancing the cleaning power of component (A) and reducing its usage, contributing to low foaming, while also suppressing the adhesion and accumulation of limescale on the glass surface of dishwashers.

[0029] (B) The component is not particularly limited, and any general chelating agent that has been used in dishwasher detergents can be used. Component (B) may be either a low molecular weight chelating agent with a molecular weight of 800 or less, or a high molecular weight chelating agent with a weight-average molecular weight of 800 or more. In this specification, the molecular weight of low molecular weight chelating agents can be measured by mass spectrometry, and the weight-average molecular weight of high molecular weight chelating agents can be calculated by a standard polystyrene equivalent method using gel permeation chromatography (GPC).

[0030] Examples of low molecular weight chelating agents include one or more selected from the group consisting of aminocarboxylic acid-based chelating agents and hydroxycarboxylic acid-based chelating agents.

[0031] Examples of aminocarboxylic acid-based chelating agents include aminocarboxylic acids or their salts such as methylglycine diacetic acid or its salt, glutamic acid diacetic acid or its salt, nitrilotriacetic acid or its salt, ethylenediaminetetraacetic acid or its salt, diethylenetriaminetetraacetic acid or its salt, β-alanine diacetic acid or its salt, L-aspartic acid diacetic acid or its salt, iminodisuccinic acid or its salt, ethylenediaminedisuccinic acid or its salt (however, those having a hydroxyl group, an amino group, and a carboxyl group are classified as hydroxyaminocarboxylic acids); and hydroxyaminocarboxylic acids or their salts such as serine diacetic acid or its salt, hydroxyiminodisuccinic acid or its salt, hydroxyethylethylenediaminetriacetic acid or its salt, dihydroxyethylglycine or its salt. Examples of hydroxycarboxylic acid chelating agents (excluding those that fall under the category of aminocarboxylic acid chelating agents) include lactic acid or its salts, malic acid or its salts, citric acid or its salts, tartaric acid or its salts, glycolic acid or its salts, gluconic acid or its salts, etc. Among these, citric acid, methylglycine diacetic acid, glutamic acid diacetic acid, ethylenediaminetetraacetic acid, or salts thereof are preferred, and citric acid, methylglycine diacetic acid, or salts thereof are more preferred because they easily suppress the adhesion and accumulation of protein and oil stains on the glass surface of dishwashers when the pH is near neutral, and a combination of citric acid or a salt thereof and methylglycine diacetic acid or a salt thereof is even more preferred.

[0032] When citric acid or its salt is used in combination with methylglycine diacetic acid or its salt, the mass ratio expressed as citric acid or its salt / methylglycine diacetic acid or its salt is preferably 0.1 to 10.0, more preferably 0.3 to 3.0, and most preferably 0.4 to 1.0, from the viewpoint of balancing low foaming and cleaning power.

[0033] Examples of polymer chelating agents include those having a carboxyl group or a salt thereof, a sulfo group or a salt thereof, or a phosphate group or a salt thereof as an anionic group. Among these, polycarboxylic acid polymers or salts thereof having a carboxyl group or a salt thereof are preferred. Examples of polycarboxylic acid polymers or salts thereof include polyacrylic acid or salts thereof, copolymers of acrylic acid and sulfonic acid monomers or salts thereof, and copolymers of maleic acid and acrylic acid or salts thereof. Graft polymers of these polymers with polyalkylene glycol or salts thereof can also be suitably used.

[0034] The acid value of the polymer chelating agent is preferably 300 to 1000 mg KOH / g, more preferably 450 to 900 mg KOH / g, and even more preferably 650 to 800 mg KOH / g. If the acid value of the polymer chelating agent is above the lower limit, it is easier to improve low foaming properties. If the acid value of the polymer chelating agent is below the upper limit, it is easier to maintain the pH near neutral and improve the stability of the solution. In this specification, the acid value can be measured in accordance with the neutralization titration method described in JIS K0070-1992.

[0035] Examples of salts that make up component (B) include alkali metal salts, alkaline earth metal salts, alkanolammonium salts, and ammonium salts. Examples of alkali metal salts include sodium salts and potassium salts. Examples of alkaline earth metal salts include magnesium salts and calcium salts. Examples of alkanol ammonium salts include monoethanolammonium salt, diethanolammonium salt, and triethanolammonium salt. These (B) components may be a single type or a combination of two or more types.

[0036] The content of component (B) is preferably 2 to 25% by mass, more preferably 6 to 20% by mass, and even more preferably 8 to 15% by mass, relative to the total mass of the detergent composition. If the content of component (B) is above the lower limit, component (B) chelates metal ions in tap water, thereby improving the activity of component (A) and enhancing cleaning power, and suppressing the adhesion and accumulation of protein and oil stains on the glass surface of the dishwasher. It also suppresses the adhesion of limescale to the glass surface of the dishwasher and the accumulation of protein and oil stains that adhere on limescale. Furthermore, by chelating metal ions derived from protein stains, protein stains are made easier to remove, thereby suppressing the adhesion and accumulation of protein stains on the glass surface of the dishwasher. If the content of component (B) is below the upper limit, the solubility of component (B) in water is increased, improving liquid stability. Furthermore, it prevents the chelation of metal ions that contribute to the stabilization of component (D) (enzyme), as described later, and prevents a decrease in cleaning power due to enzyme deactivation, thereby suppressing the adhesion and accumulation of protein and oil stains on the glass surface of the dishwasher.

[0037] In a detergent composition, the mass ratio of component (A) to component (B), expressed as (A) / (B) (hereinafter also referred to as the "A / B ratio"), is preferably 0.02 to 0.7, more preferably 0.05 to 0.5, and even more preferably 0.1 to 0.3. If the A / B ratio is above the lower limit, the solubility of component (A) is increased by chelating metal ions (e.g., calcium ions) in tap water, making it easier to form micelles with protein and oil stains. Therefore, even if the content of component (A) is low, the cleaning power against protein and oil stains can be increased. If the A / B ratio is below the upper limit, chelating metal ions in tap water makes it easier to suppress the adhesion of limescale (e.g., calcium carbonate), thus preventing protein and oil stains from adhering to and accumulating on top of limescale.

[0038] The total content of components (A) and (B) is preferably 4.3 to 35% by mass, more preferably 6.5 to 25% by mass, and even more preferably 8.0 to 17% by mass, based on the total mass of the detergent composition.

[0039] <Optional ingredients> The cleaning agent composition may contain other components (optional components) besides components (A) and (B). Any optional component can be used in a detergent composition. Examples include anionic surfactants other than component (A), other surfactants (hereinafter also referred to as "optional surfactants"), enzymes (hereinafter also referred to as "component (D)"), preservatives, inorganic builders, hydrotropes, polymer compounds, pH adjusters, solvents, fragrances, dyes, thickeners, disinfectants, antibacterial agents, antioxidants, etc.

[0040] Examples of anionic surfactants other than component (A) include linear alkylbenzene sulfonic acid or its salt, α-olefin sulfonic acid or its salt, internal olefin sulfonic acid or its salt, linear or branched alkyl sulfate ester or its salt, alkyl ether sulfate ester or its salt, alkenyl ether sulfate ester or its salt, alkane sulfonic acid or its salt, α-sulfo fatty acid ester or its salt, alkyl carboxylic acid or its salt, alkyl ether carboxylic acid or its salt. Among these, linear or branched alkyl sulfate ester or its salt, α-sulfo fatty acid ester or its salt, etc. are preferred. Examples of salt forms of anionic surfactants include alkali metal salts such as sodium salts and potassium salts; alkaline earth metal salts such as magnesium salts and calcium salts; and alkanol ammonium salts such as monoethanolammonium salt, diethanolammonium salt, and triethanolammonium salt. Among these, alkali metal salts are preferred because component (B) chelates metal ions in tap water, thereby increasing the solubility of component (C) and improving its cleaning power, which in turn suppresses the adhesion and accumulation of dirt on the glass surface of dishwashers. Sodium salts and potassium salts are more preferred, and among these, sodium salts are even more preferred from the viewpoint of solubility.

[0041] As an anionic surfactant other than component (A), for example, an anionic surfactant represented by the following formula (c) (hereinafter also referred to as "component (C)") is preferred.

[0042] [ka]

[0043] In formula (c), R c1 is a linear or branched alkyl group having 6 to 18 carbon atoms, or a linear or branched alkenyl group having 6 to 18 carbon atoms, and X is a single bond or -O-(AO) t-, where AO is an alkylene oxy group with 2 to 4 carbon atoms, t is an integer from 0 to 10 indicating the average number of repetitions, s is a number of 0s or 1s, u is a number of 0s or 1s, Z is a hydrogen atom, -CH2-CO2M c11 A group represented by -C(=O)-(OA) r -OR c2 It is a group represented by M c11 R is a hydrogen atom or counterion, c2 is a linear or branched alkyl group having 6 to 18 carbon atoms, or a linear or branched alkenyl group having 6 to 18 carbon atoms, Y is a single bond or -O-, and M c1 It is a counterion.

[0044] R c1 Preferably, the alkyl group is a linear or branched alkyl group having 6 to 18 carbon atoms, more preferably a cocoyl group, octyl group, decyl group, dodecyl group, tetradecyl group, or hexadecyl group, and even more preferably an octyl group, decyl group, dodecyl group, tetradecyl group, or hexadecyl group. The alkylene group of the alkylene oxy group is preferably an alkylene group having 2 to 4 carbon atoms, more preferably an ethylene group or a propylene group, and even more preferably an ethylene group. When an alkylene oxy group is present, t is preferably 1 to 9, more preferably 2 to 9 from the viewpoint of low foaming, and even more preferably 3 to 8 from the viewpoint of balancing low foaming and cleaning power. R c2 For example, R c1 The same items mentioned above can be cited. M c1 As for M a1 Examples similar to the counterions mentioned earlier can be cited. M c11 As for M a1 Examples similar to the counterions mentioned earlier can be cited.

[0045] (C) Component is more preferably one or more selected from the group consisting of sulfosuccinic acid or a salt thereof represented by the following formula (c-1), sulfosuccinic acid or a salt thereof represented by the following formula (c-2), and a sulfate ester or a salt thereof having an alkyl or alkenyl group having 8 to 18 carbon atoms represented by the following formula (c-3).

[0046] [ka]

[0047] In formula (c-1), R c11 is a linear or branched alkyl group having 8 to 18 carbon atoms, or a linear or branched alkenyl group having 8 to 18 carbon atoms, AO is an alkylene oxy group, t is an integer from 0 to 10 indicating the average number of repeats of AO, and M c1 It is a counterion, M c11 This is a hydrogen atom or a counterion. Examples of component (C) having the structure of formula (c-1) include monoalkyl or monoalkenyl sulfosuccinate or salts thereof, such as disodium lauryl sulfosuccinate, disodium lauryl polyoxyethylene sulfosuccinate (average number of moles of ethylene oxide added: 3), disodium polyoxyethylene alkyl (number of carbon atoms: 12-14) sulfosuccinate (average number of moles of ethylene oxide added: 4), and disodium polyoxyethylene alkyl (number of carbon atoms: 12-14) sulfosuccinate (average number of moles of ethylene oxide added: 9).

[0048] [ka]

[0049] In formula (c-2), R c11 is a linear or branched alkyl group having 8 to 18 carbon atoms, or a linear or branched alkenyl group having 8 to 18 carbon atoms, AO is an alkylene oxy group, t is an integer from 0 to 10 indicating the average number of repeats of AO, and M c1is the counterion, OA is the oxyalkylene group, r is an integer from 0 to 10 indicating the average number of repeats of OA, and R c12 This is a linear or branched alkyl group having 8 to 18 carbon atoms, or a linear or branched alkenyl group having 8 to 18 carbon atoms. Examples of component (C) having the structure of formula (c-2) include dialkyl sulfosuccinate or its salts, such as sodium dioctyl sulfosuccinate, dialkenyl sulfosuccinate or its salts, and sulfosuccinate or its salts having monoalkyl and monoalkenyl groups.

[0050] [ka]

[0051] In formula (c-3), R c3 M is a linear alkyl group having 8 to 18 carbon atoms, or a linear alkenyl group having 8 to 18 carbon atoms. c1 It is a counterion. Examples of component (C) having the structure of formula (c-3) include alkyl sulfate salts such as linear alkyl(C10) sulfate sodium.

[0052] In formula (c-1), t, M c1 and M c11 The same applies as described above. c11 Preferably, the alkyl group is a linear or branched alkyl group having 8 to 18 carbon atoms, more preferably a cocoyl group, octyl group, decyl group, dodecyl group, tetradecyl group, or hexadecyl group, and even more preferably an octyl group, decyl group, dodecyl group, tetradecyl group, or hexadecyl group. For r, 0 to 8 is preferred, 0 to 5 is more preferred, and 0 is even more preferred. In formula (c-2), R c11 , t, and M c1 The same applies as described above. c12 For example, R c11 The same types as those listed above can be cited. The alkylene groups of the oxyalkylene groups are the same types as those listed for the alkylene oxy groups. In formula (c-3), M c1 The same applies as described above. R c3 More preferably, the group is a cocoyl group, n-heptyl group, n-octyl group, n-decyl group, n-dodecyl group, n-tetradecyl group, or n-hexadecyl group; even more preferably, an n-octyl group, n-decyl group, n-dodecyl group, n-tetradecyl group, or n-hexadecyl group; and even more preferably, an n-decyl group. These (C) components may be a single type or a combination of two or more types, but preferred are monoalkyl or monoalkenyl sulfosuccinate having the structure of formula (c-1) or a salt thereof, dialkyl sulfosuccinate having the structure of formula (c-2) or a salt thereof, dialkenyl sulfosuccinate having the structure thereof, or sulfosuccinate having a monoalkyl group and a monoalkenyl group or a salt thereof.

[0053] (C) The content of component (C) is preferably 0 to 5% by mass, more preferably 0.2 to 2% by mass, and even more preferably 0.5 to 2% by mass, relative to the total mass of the detergent composition. If the content of component (C) is above the lower limit, the accumulation of protein, oil, limescale, and other dirt on the glass surface of the dishwasher can be suppressed. If the content of component (C) is below the upper limit, foaming inside the dishwasher can be suppressed without reducing the cleaning power, making it easier to improve low-foaming properties.

[0054] In a detergent composition, the mass ratio of component (A) to component (C), expressed as component (A) / component (C) (hereinafter also referred to as the "A / C ratio"), is preferably 0.3 to 10, and more preferably 0.5 to 5. If the A / C ratio is above the lower limit, it becomes easier to further improve low foaming properties. If the A / C ratio is below the upper limit, it is possible to achieve high protein and oil stain cleaning power while lowering manufacturing costs, and it is possible to prevent dirt from adhering to the glass surface of the dishwasher.

[0055] The AC / B ratio is the ratio of the total content of component (A) and component (C) to the content of component (B), and is expressed as [(A) component + (C) component] / (B) component. The mass ratio (AC / B ratio) is preferably 0.02 to 0.7, more preferably 0.05 to 0.5, and even more preferably 0.1 to 0.3. If the AC / B ratio is above the lower limit, component (B), which is a salt of a weak acid and a strong base, prevents the pH of the cleaning solution from becoming alkaline, suppresses excessive ionization of the anionic surfactant, and thereby makes it easier to improve low foaming. If the AC / B ratio is below the upper limit, the cleaning solution becomes alkaline, which increases the solubility of component (A) and component (C), and thereby makes it easier to further increase the cleaning power of the anionic surfactant.

[0056] Examples of optional surfactants include cationic surfactants and nonionic surfactants. Examples of cationic surfactants include didecyldimethylammonium chloride, didecyldimethylammonium methosulfate, distearyldimethylammonium chloride, dioctyldimethylammonium chloride, distearyldihydroxyethylammonium chloride, ditallow alkyldimethylammonium chloride, di(stearoyloxyethyl)dimethylammonium chloride, di(oleoyloxyethyl)dimethylammonium chloride, di(palmitoyloxyethyl)dimethylammonium methosulfate, di(stearoyloxyisopropyl)dimethylammonium chloride, di(oleoyloxyisopropyl)dimethylammonium chloride, di(oleoyloxybutyl)dimethylammonium chloride, di(stearoyloxyethyl)methylhydroxyethylammonium methosulfate, and tri(stearoyloxyethyl)methylmethosulfate. The number of carbon atoms in the "tallow alkyl" group is 14 to 18. Cationic surfactants may be used individually or in appropriate combinations of two or more types.

[0057] Examples of nonionic surfactants include polyoxyalkylene-type nonionic surfactants, Garbet alcohol-type nonionic surfactants, alkylphenols, alkylene oxide adducts of fatty acids having 8 to 22 carbon atoms or amines having 8 to 22 carbon atoms, polyoxyethylene polyoxypropylene block copolymers, fatty acid alkanolamides, polyhydric alcohol fatty acid esters or their alkylene oxide adducts, alkylene oxide adducts of hydrogenated castor oil, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, alkyl glycosides, and the like. Nonionic surfactants may be used individually or in appropriate combinations of two or more types.

[0058] The content of optional surfactants is preferably 3% by mass or less, more preferably 1% by mass or less, and even more preferably substantially absent, based on the total mass of the detergent composition. "Substantially absent" means less than 0.1% by mass, based on the total mass of the detergent composition.

[0059] The total amount of all surfactants contained in the detergent composition (hereinafter also referred to as "total surfactant amount") is preferably 0.3 to 10% by mass, and more preferably 0.5 to 5% by mass, relative to the total mass of the detergent composition. If the total surfactant amount is above the lower limit, the detergent composition can obtain sufficient cleaning power. If the total surfactant amount is below the upper limit, foaming in the dishwasher can be suppressed without reducing cleaning power, making it easier to improve low-foaming properties.

[0060] The detergent composition contains an enzyme (component (D)), which enhances the cleaning power against complex stains including protein and oil stains, suppresses the adhesion and accumulation of dirt on the glass surface of the dishwasher, and shortens the washing time.

[0061] (D) Examples of components include amylase, protease, mannanase, cellulase, and lipase. Among these, protease and lipase are preferred from the viewpoint of suppressing the adhesion and accumulation of protein and oil stains on the glass surface of the dishwasher, and a combination of protease and lipase is more preferred because they contribute to both protein and oil stains. Component (D) may be used alone or in combination of two or more types.

[0062] The content of component (D) is preferably 720 to 3000 ppm by mass, more preferably 850 to 2400 ppm by mass, and even more preferably 1110 to 1650 ppm by mass, based on the total mass of the detergent composition in terms of protein content. If the content of component (D) is above the lower limit, the cleaning power against complex stains including protein and oil stains can be enhanced, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the cleaning time can be shortened. If the content of component (D) is below the upper limit, the manufacturing cost can be reduced without adding more enzymes than necessary, and the deterioration and precipitation of component (D) can be prevented by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and the cleaning power can be prevented from decreasing by making it easier for component (B) to chelate metal ions in tap water.

[0063] ≪Method for quantifying enzymes (protein equivalent)≫ Using the Bio-Rad DC Protein Assay Kit, ovalbumin (the protein that forms egg white) is used as the standard protein. The buffer is 0.1N NaOH. Prepare solution A' by adding 20 μL of reagent S (surfactant solution) to 1 mL of reagent A (alkaline copper tartaric acid). Weigh 200 μL of the cleaning agent composition into a 2.0 mL microtube. Add 100 μL of solution A' and 800 μL of reagent B (forin reagent diluent) and mix well. After standing at room temperature, measure the absorbance at a measurement wavelength of 750 nm within 1 hour (1 cm quartz cell, slit width 0.5 mm). Perform the same procedure for ovalbumin solutions of known concentration and create a calibration curve. Use the absorbance of the measured samples to determine the protein amount from the calibration curve, and use this as the protein equivalent value of the enzyme. Furthermore, determine the concentration in the cleaning agent composition using the following formula. Protein equivalent value (mass %) = Protein amount (g) / 2.0 × 100

[0064] The content of component (D) as an enzyme preparation (preparation content) is preferably 0 to 1% by mass, more preferably 0.1 to 0.7% by mass, and even more preferably 0.2 to 0.5% by mass, relative to the total mass of the detergent composition. If the preparation content of component (D) is above the lower limit, the cleaning power against complex stains including protein and oil stains can be enhanced, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the cleaning time can be shortened. If the preparation content of component (D) is below the upper limit, manufacturing costs can be reduced without adding more enzyme than necessary, and component (D) can be prevented from degrading and precipitating by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and the cleaning power can be prevented from decreasing by making it easier for component (B) to chelate metal ions in tap water.

[0065] If component (D) contains amylase, the amount of amylase is preferably such that the amylase activity measured by the measurement method described later is 0.44 to 1.25 U, and more preferably 0.63 to 1.00 U. If the amylase activity is above the lower limit, the cleaning power against complex stains including starch stains and protein / oil stains is enhanced, the adhesion and accumulation of stains on the glass surface of the dishwasher can be suppressed, and the washing time can be shortened. If the amylase activity is below the upper limit, the manufacturing cost can be reduced without adding more enzyme than necessary, and the deterioration and precipitation of component (D) can be prevented by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and the cleaning power can be prevented from decreasing by making it easier for component (B) to chelate metal ions in tap water.

[0066] If component (D) contains amylase, the ratio of the content of component (D) (calculated in terms of protein amount) to the amylase activity (U) (D / amylase activity ratio) is preferably 0.15 to 0.21, and more preferably 0.16 to 0.19. If the D / amylase activity ratio is above the lower limit, manufacturing costs can be reduced by not adding more enzyme than necessary, and component (D) can be prevented from degrading and precipitating by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and cleaning power can be prevented by making it easier for component (B) to chelate metal ions in tap water. If the D / amylase activity ratio is below the upper limit, cleaning power against complex stains including starch stains and protein / oil stains can be increased, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the washing time can be shortened.

[0067] If component (D) contains protease, the amount of protease is preferably such that the protease activity measured by the measurement method described later is 0.18 to 0.45 U, and more preferably 0.24 to 0.37 U. If the protease activity is above the lower limit, the cleaning power against protein stains and complex stains including protein and oil stains can be enhanced, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the cleaning time can be shortened. If the protease activity is below the upper limit, the manufacturing cost can be reduced without adding more enzyme than necessary, and the deterioration and precipitation of component (D) can be prevented by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and the cleaning power can be prevented from decreasing by making it easier for component (B) to chelate metal ions in tap water.

[0068] If component (D) contains protease, the ratio of the content of component (D) (calculated in terms of protein amount) to the protease activity (U) (D / protease activity ratio) is preferably 0.43 to 0.50, and more preferably 0.44 to 0.47. If the D / protease activity ratio is above the lower limit, manufacturing costs can be reduced by not adding more enzyme than necessary, and component (D) can be prevented from degrading and precipitating by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and cleaning power can be prevented by making it easier for component (B) to chelate metal ions in tap water. If the D / protease activity ratio is below the upper limit, cleaning power against protein stains and complex stains including protein and oil stains can be increased, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the washing time can be shortened.

[0069] If component (D) contains lipase, the amount of lipase is preferably such that the lipase activity measured by the measurement method described below is 0.2 to 0.6 U, and more preferably 0.25 to 0.55 U. If the lipase activity is above the lower limit, the cleaning power against oil stains is further enhanced, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the washing time can be shortened. If the lipase activity is below the upper limit, the manufacturing cost can be reduced without adding more enzyme than necessary, and the deterioration and precipitation of component (D) can be prevented by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and the cleaning power can be prevented from decreasing by making it easier for component (B) to chelate metal ions in tap water.

[0070] If component (D) contains lipase, the ratio of the content of component (D) to the lipase activity (U) (calculated in terms of protein amount) (D / lipase activity ratio) is preferably 0.30 to 0.38, and more preferably 0.32 to 0.36. If the D / lipase activity ratio is above the lower limit, manufacturing costs can be reduced by not adding more enzyme than necessary, and component (D) can be prevented from degrading and precipitating by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and cleaning power can be prevented by making it easier for component (B) to chelate metal ions in tap water. If the D / lipase activity ratio is below the upper limit, cleaning power against oil stains can be further enhanced, the adhesion and accumulation of dirt on the glass surface of the dishwasher can be suppressed, and the washing time can be shortened.

[0071] If component (D) contains mannanase, the amount of mannanase is preferably 0.35 to 1.1 U, and more preferably 0.45 to 0.80 U, as measured by the measurement method described later. If the mannanase activity is above the lower limit, the cleaning power against complex stains including polysaccharides other than starch, proteins, and oil stains can be further enhanced, suppressing the adhesion and accumulation of dirt on the glass surface of the dishwasher, and shortening the washing time. If the mannanase activity is below the upper limit, the manufacturing cost can be reduced by not adding more enzyme than necessary, and the deterioration and precipitation of component (D) can be prevented by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and the cleaning power can be prevented from decreasing by making it easier for component (B) to chelate metal ions in tap water.

[0072] If component (D) contains mannanase, the ratio of the content of component (D) to mannanase (U) (calculated in terms of protein amount) (D / mannanase activity ratio) is preferably 0.16 to 0.24, and more preferably 0.18 to 0.22. If the D / mannanase activity ratio is above the lower limit, manufacturing costs can be reduced by not adding more enzyme than necessary, and component (D) can be prevented from degrading and precipitating by preventing component (B) from chelating metal ions that contribute to the stabilization of component (D), and cleaning power can be prevented by making it easier for component (B) to chelate metal ions in tap water. If the D / mannanase activity ratio is below the upper limit, cleaning power against complex stains including polysaccharides other than starch, protein and oil stains can be further enhanced, dirt adhesion and accumulation on the glass surface of the dishwasher can be suppressed, and cleaning time can be shortened.

[0073] (Measurement method) <Amylase activity> Amylase activity can be measured using the following method. The Phadebas tablet (manufactured by Magle, Phadebas Amylase Test for amylase activity measurement), which is a cross-linked starch polymer containing an insoluble blue pigment, is hydrolyzed with alpha-amylase, and the absorbance (620 nm) of the water-soluble blue pigment is measured to determine the alpha-amylase activity. 20.0 g of sodium sulfite (manufactured by Junsei Chemical Co., Ltd., reagent grade, etc.), 6.15 g of potassium dihydrogen phosphate (manufactured by Hayashi Pure Chemical Industries, Ltd., special grade, etc.), 10.86 g of disodium hydrogen phosphate dodecahydrate (manufactured by Kanto Chemical Co., Ltd., special grade, etc.), 0.015 g of calcium chloride dihydrate (manufactured by Kanto Chemical Co., Ltd., first grade, etc.), and 0.75 mL of Brij 35 (manufactured by MERCK, 30% aqueous solution) are accurately weighed, dissolved in deionized water, and diluted to 1000 mL to obtain a buffer solution. 0.5 g of the detergent composition as a sample is accurately weighed, dissolved in the above buffer solution, and diluted to 100 mL to obtain the sample solution. For each sample, two glass test tubes (18 mm × 180 mm) are prepared, one for the sample (A) and the other for the blank (B). 1 mL of the sample solution is placed only in test tube A. Add 5.0 mL of buffer solution, preheated to 37°C, to both test tubes, then add one Fadebath tablet. Mix with a flash mixer for 10 seconds, then place the test tubes in a 37°C water bath. Repeat this procedure at 30-second intervals. Exactly 15 minutes later, add 1.0 mL of 1 mol / L NaOH solution to both test tubes, mix with a flash mixer for 10 seconds, let stand at room temperature for 15 minutes, and then immediately filter through filter paper. If turbidity is present, filter using a filtration kit. Measure the absorbance of the filtrates of sample (A) and blank (B) (a washing agent composition with the enzyme replaced by water) obtained from the above procedure at a measurement wavelength λ=620 nm (1 cm quartz cell, slit width 0.5 mm). Calculate the enzyme activity value of amylase using the following formula. Enzyme activity value (U) = (Absorbance of sample) - (Absorbance of blank)

[0074] <Protease activity> Protease activity can be measured using the following method. Milk casein is treated with an enzyme, and the undegraded protein is precipitated by adding trichloroacetic acid (TCA), followed by filtration. By measuring the absorbance (λ=275nm) of this filtrate, the amount of amino acids containing a phenyl group (e.g., tyrosine) eluted is determined, and the protease activity is calculated. Precisely place 1.2 g of milk casein (CALBIOCHEM) into a 200 mL beaker and quickly knead it with a glass rod while gradually adding 6 mL of 1 mol / L NaOH to swell it. Next, add 160 mL of 0.05 mol / L boric acid solution, stir with a stirrer to disperse, adjust the pH to 10.5 with 1 mol / L NaOH, and then bring to a final volume of 200 mL. Accurately weigh 1 g of the detergent composition, dissolve it in deionized water, and bring to a final volume of 100 mL to prepare the sample solution. For each sample, prepare two glass test tubes (18 mm × 180 mm), one for the sample (A) and the other for the blank (B). Add 1 mL of the sample solution to both test tubes. Add 5.0 mL of the casein solution, which has been preheated to 37°C, to only test tube A of the sample, stir with a flash mixer for 10 seconds, and then place both test tubes in a 37°C water bath. Repeat this procedure at 30-second intervals. Exactly 30 minutes later, add 5.0 mL of 0.44 mol / L TCA solution to both test tubes, mix with a flash mixer for 10 seconds, leave in a water bath for 30 minutes, and immediately filter through filter paper. Then filter through a filtration filter (Tomsic, NP-44525-ACF). The absorbance of the filtrates of sample (A) and blank (B) (composition without casein) obtained by the above procedure was measured at a measurement wavelength λ=275nm (1cm quartz cell, slit width 0.5mm). The enzyme activity value of the protease was calculated using the following formula. Enzyme activity value (U) = (Absorbance of sample) - (Absorbance of blank)

[0075] <Lipase activity> Lipase activity can be measured using the following method. The measurement is performed using Lipase Kit S (Sumitomo Bakelite Co., Ltd., product number: BS-92101). The substrate (BALB, dimercaprol tributyrate), SDS (sodium dodecyl sulfate), and esterase inhibitor (PMSF, phenylmethylsulfonyl fluoride) are added to the sample washing composition. PMSF and SDS inactivate esterases other than lipase in the sample, while SDS activates the lipase in the sample. The activated lipase hydrolyzes BALB to produce dimercaprol (BAL). The resulting BAL quantitatively reacts with DTNB (5,5'-dithiobis(2-nitrobenzoic acid)) to produce a yellow 2-nitro-5-thiobenzoic acid (TNB) anion. The reaction of the lipase is stopped by adding a reaction stop solution. The lipase activity is calculated by measuring the absorbance (λ=412nm). Add 2.4 mL of buffer solution, which is a pH 8.6, 15% by mass aqueous solution of 2-amino-2-hydroxymethyl-1,3-propanediol, to a container containing the color developer (DTNB) to completely dissolve the color developer, and then add 22 mL of purified water to prepare the color developer stock solution. Next, transfer the entire volume to a 500 mL graduated cylinder, mix 1 volume of the color developer stock solution with 1 volume of the buffer solution, and then add 8 volumes of purified water to prepare the color developer solution. The reaction stop solution solidifies when stored in a cool place, so it is melted by heating (30°C, 5-10 minutes). Then, the entire volume is poured into a 500 mL graduated cylinder while washing with purified water, and the final volume is adjusted to 500 mL with purified water to prepare the reaction stop solution, which is then transferred to an Erlenmeyer flask. For each sample, prepare two glass test tubes: one for the sample (A) and the other for the blank (B). Add 1 mL of the color-developing solution and 50 μL of the sample to both test tubes and mix. Then add 20 μL of esterase inhibitor solution with a concentration of 0.1–1% by mass. After mixing, place both test tubes in a thermostat and incubate at 30±1°C for 5 minutes. After 5 minutes, while still in the thermostat, add 100 μL of substrate solution with a concentration of 0.1–1% by mass to test tube A only, mix, and immediately incubate at 30±1°C. After incubation is complete, while still in the thermostat, immediately add 2 mL of reaction stop solution to both test tubes. Remove both test tubes from the thermostat and mix. Then add 100 μL of substrate solution to test tube B only and mix again. The absorbance of the sample (A) and blank (B) (unreacted enzyme composition) was measured at a wavelength of 412 nm using purified water as a control (1 cm quartz cell, slit width 0.5 mm). The enzyme activity value of lipase was calculated using the following formula. Enzyme activity value (U) = (Absorbance of sample) - (Absorbance of blank)

[0076] <Mannanase activity> The mannanase activity is measured using the following method. By reacting a polysaccharide (galactomannan) with an enzyme (mannanase) in liquid detergent, and by using a p-hydroxybenzhydrazide (PAHBAH) chromogenic reagent to color the reducing end of galactomenan, the degree of galactomannan degradation is detected by measuring the absorbance (λ=275nm), and the mannanase activity is calculated. Dissolve 0.15 g of galactomannan (Megazyme) in 100 mL of deionized water and stir in a 50°C water bath until clear and homogeneous. After stirring, allow to stand in a 50°C water bath. Dissolve 46.85 g of anhydrous disodium hydrogen phosphate (special grade reagent, Kanto Chemical Co., Ltd.) and 9.4 g of sodium dihydrogen phosphate dihydrate (special grade reagent, Kanto Chemical Co., Ltd.) in 1000 mL of deionized water. For the PAHBAH colorimetric reagent, dissolve 0.552 g of Bismuth(3)acetate, 99% (Alfa Aesar, etc.), 2 g of p-hydroxybenzhydrazide (Wako Pure Chemical Industries, Ltd., etc.), and 5 g of (+)-potassium sodium tartrate tetrahydrate (special grade reagent, Junsei Chemical Co., Ltd., etc.) in 0.5 mol / L-NaOH to a total volume of 100 mL. Cover the entire mixture with aluminum foil to protect it from light and stir until the reagent dissolves. Weigh 0.07 g of the washing agent composition accurately, dissolve it in phosphate buffer (concentration 0.4 mol / L), and dilute to 100 mL to prepare the sample solution. For each sample, prepare two glass test tubes (18 mm × 180 mm), one for the sample (A) and the other for the blank (B). Add 2 mL of the sample solution and 5 mL of the galacton mannan substrate solution to each test tube. Add 2 mL of the washing agent composition as the sample to test tube A only, stir with a flash mixer for 10 seconds, and place in a 50°C water bath. Repeat this procedure at 30-second intervals. Dissolve 0.552 g of Bismuth(III)acetate, 99% (e.g., Alfa Aesar), 2 g of p-hydroxybenzhydrazide (e.g., Wako Pure Chemical Industries), and 5 g of (+)-potassium sodium tartrate tetrahydrate (special grade reagent, e.g., Junsei Chemicals) in 0.5 mol / L NaOH in a total volume of 100 mL. Cover the entire mixture with aluminum foil and stir until the reagents dissolve, protecting it from light, to prepare the PAHBAH color reagent. (Note that this reagent should not be stored for more than one day, but prepared and used daily.) Exactly 30 minutes later (using a stopwatch), add 4 mL of the PAHBAH color reagent, stir with a flash mixer for 10 seconds, and leave on ice for 10 minutes. At the same time, add 4 mL of the PAHBAH color reagent to the blank (composition without the washing agent composition) and stir with a flash mixer for 10 seconds to inactivate the enzyme.Next, add 5 mL of a 0.15% by mass galactomannan substrate solution, mix again with a flash mixer for 10 seconds, and then let stand on ice for 10 minutes. Then proceed to the color development procedure. Place each test tube containing the PAHBAH reagent into a 70°C water bath at 10-second intervals, remove after exactly 10 minutes, and let stand in an ice bath. Then immediately filter through filter paper. The absorbance of the filtrates of sample (A) and blank (B) (composition without detergent composition) obtained by the above procedure is measured using a spectrophotometer at a measurement wavelength λ=405nm (1cm quartz cell, slit width 0.5mm). The enzyme activity value of mannanase is calculated using the following formula. Enzyme activity value (U) = (Absorbance of sample) - (Absorbance of blank)

[0077] By containing a preservative in the cleaning agent composition, the growth of microorganisms can be suppressed even if they become contaminated with the cleaning agent composition. Examples of preservatives include isothiazoline compounds, specifically benzisothiazolinone (1,2-benzisothiazolinone-3-one), methylisothiazolinone (2-methyl-4-isothiazolinone-3-one), butylbenzisothiazolinone, chloromethylisothiazolinone, octylisothiazolinone, and dichlorooctylisothiazolinone. Preservatives may be used individually or in combination of two or more as appropriate.

[0078] The preservative content is preferably 0.0002 to 0.01% by mass (2 to 100 ppm by mass) relative to the total mass of the detergent composition, and more preferably 0.0005 to 0.004% by mass (5 to 40 ppm by mass). If the preservative content is within the above range, the effect of the formulation can be fully obtained without reducing the detergent power of the detergent composition.

[0079] Examples of inorganic builders include metal oxides. Examples of metal oxides include zinc oxide and magnesium oxide. Inorganic builders may be used individually or in combination of two or more types as appropriate. If the detergent composition contains an inorganic builder, the inorganic builder content is preferably 0.01 to 5% by mass relative to the total mass of the detergent composition.

[0080] The inclusion of a hydrotrope agent in the detergent composition improves its liquid stability (especially its low-temperature stability), making it easier to ensure a more stable transparent appearance. Examples of hydrotropes include aromatic sulfonic acids having 6 to 9 carbon atoms or their salts, aromatic carboxylic acids having 7 to 10 carbon atoms or their salts.

[0081] Examples of aromatic sulfonic acids having 6 to 9 carbon atoms or their salts include xylene sulfonic acid or its salts, such as o-xylene sulfonic acid and m-xylene sulfonic acid; toluene sulfonic acid or its salts, such as o-toluene sulfonic acid, m-toluene sulfonic acid, and p-toluene sulfonic acid; cumene sulfonic acid or its salts, such as m-cumene sulfonic acid and p-cumene sulfonic acid; and mesitylene sulfonic acid or its salts. Examples of aromatic carboxylic acids having 7 to 10 carbon atoms or their salts include benzoic acid or its salts, salicylic acid or its salts, phthalic acid or its salts, isophthalic acid or its salts, terephthalic acid or its salts, p-oxybenzoic acid, β-oxynaphthoic acid, and the like. Examples of salt forms of aromatic sulfonic acids and aromatic carboxylic acids include alkali metal salts such as sodium salts and potassium salts; alkaline earth metal salts such as magnesium salts and calcium salts; and alkanol ammonium salts such as monoethanolammonium salt, diethanolammonium salt, and triethanolammonium salt. Among these, alkali metal salts are preferred, sodium salts and potassium salts are more preferred, and sodium salts are even more preferred. Hydrotropes may be used individually or in combination of two or more types.

[0082] The hydrotrope content is preferably 2 to 30% by mass, and more preferably 3 to 10% by mass, relative to the total mass of the detergent composition. Within this range, sufficient liquid stabilization can be achieved without reducing the detergent power of the detergent composition.

[0083] Examples of polymer compounds (excluding those corresponding to component (B)) include polysaccharide polymer compounds such as carboxymethylcellulose (CMC). Alternatively, water-soluble polymers described in Japanese Patent Publication No. 2009-16622 (e.g., alkylene oxide adducts of polyalkyleneamines) and polyester soil-release polymers described in International Publication No. 2012 / 136427 may be used as polymer compounds. Polymer compounds may be used individually or in combination of two or more types. The polymer compound is preferably present in an amount of 0.001 to 5% by mass, and more preferably 0.01 to 1% by mass, relative to the total mass of the detergent composition.

[0084] Examples of pH adjusting agents include inorganic alkaline agents, organic alkaline agents, and inorganic acids. Examples of inorganic alkaline agents include sodium hydroxide, potassium hydroxide, sodium carbonate, and calcium carbonate. Examples of organic alkaline agents include amine compounds such as monoethanolamine, diethanolamine, triethanolamine, 3-(N-methylamino)-1-propanol, 2-amino-2-methyl-1-propanol, N-(2-aminoethyl)ethanolamine, diethylenetriamine, morpholine, and N-ethylmorpholine. Examples of inorganic acids include hydrochloric acid and sulfuric acid. Examples of organic acids include acetic acid. pH adjusters may be used individually or in combination of two or more types as appropriate.

[0085] Examples of solvents include water and organic solvents other than hydrotropes (hereinafter also referred to as "other organic solvents"). Among these, water is preferred as the solvent. Using water as the solvent makes it easier to prepare the cleaning agent composition. In addition, when cleaning objects with the cleaning agent composition, the solubility in water is improved. The solvent may be used alone or in combination of two or more types.

[0086] For the water used, deionized water, distilled water, tap water, etc., can be used. The water content is preferably 90% by mass or less, more preferably 40-85% by mass, and even more preferably 50-85% by mass, relative to the total mass of the dishwashing detergent composition. If the water content is above the lower limit, gelation of the detergent composition is suppressed and the uniformity of the liquid is improved. If the water content is below the upper limit, the liquid stability of the detergent composition can be improved.

[0087] Other organic solvents include, for example, alcohols such as ethanol, glycerin, 1-propanol, 2-propanol, 1-butanol, and 3-methoxy-3-methyl-1-butanol (Solfit, trade name); glycols such as ethylene glycol, propylene glycol (PG), butylene glycol, and hexylene glycol; polyglycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol with a molecular weight of approximately 200 to 1000, and dipropylene glycol; and alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (butyl carbitol), and diethylene glycol dimethyl ether. The content of other organic solvents is preferably 0.01 to 10% by mass, and more preferably 0.1 to 5% by mass, relative to the total mass of the detergent composition.

[0088] As for the fragrance, those commonly used in detergent compositions can be applied. Examples of fragrances include the blended fragrance compositions 1 to 4 described in Tables 1 to 8 of Japanese Patent Publication No. 2020-132680. Fragrances may be used individually or in combination of two or more. The fragrance content is preferably 0.001 to 0.3% by mass, and more preferably 0.01 to 0.1% by mass, relative to the total mass of the detergent composition.

[0089] The pigments are not particularly limited and include, for example, pigments listed in the "Handbook of Legal Pigments" (Japan Cosmetic Industry Association) or those in which water-soluble polymers, etc., are chemically modified at the ends of the chromophore structure. The pigments may be used individually or in combination of two or more types. The pigment content is preferably 0.00001 to 0.01% by mass, and more preferably 0.0001 to 0.001% by mass, relative to the total mass of the detergent composition.

[0090] The thickening agent is not particularly limited and examples include xanthan gum (manufactured by Sansho Co., Ltd., product name "KELZAN T"), dieutan gum (manufactured by Sansho Co., Ltd., product name "KELCO-VIS DG"), and cellulose nanofiber (manufactured by Mori Machinery Co., Ltd., product name "C-100"). The thickening agent may be used alone or in combination of two or more types. The amount of thickener is preferably 0.001 to 1% by mass, and more preferably 0.01 to 0.5% by mass, relative to the total mass of the detergent composition.

[0091] Examples of disinfectants include zinc sulfate, zinc chloride, and zinc oxide. Disinfectants may be used individually or in combination of two or more types. The disinfectant content is preferably 0.001 to 5% by mass, and more preferably 0.01 to 1% by mass, relative to the total mass of the cleaning agent composition.

[0092] Examples of antibacterial agents include diphenyl ether antibacterial agents such as diclosan (4,4'-dichloro-2-hydroxydiphenyl ether) and triclosan (5-chloro-2-(2,4-dichlorophenoxy)phenol), cationic bactericides such as quaternary ammonium salts (benzalkonium chloride, alkyltrimethylammonium salt, dialkyldimethylammonium salt, alkylbenzyldimethylammonium salt, alkylpyridinium salt), bis-(2-pyridylthio-1-oxide)zinc, polyhexamethylene biguanidine hydrochloride, 8-oxyquinoline, and polylysine. Antimicrobial agents may be used individually or in combination of two or more types. The antibacterial agent content is preferably 0.001 to 5% by mass, and more preferably 0.01 to 1% by mass, relative to the total mass of the cleaning agent composition.

[0093] Examples of antioxidants include monophenol antioxidants such as dibutylhydroxytoluene and butylhydroxyanisole; bisphenol antioxidants such as 2,2'-methylenebis(4-methyl-6-t-butylphenol); and high molecular weight phenol antioxidants such as dl-α-tocopherol. Antioxidants may be used individually or in combination of two or more types.

[0094] Furthermore, the total content of all components contained in the detergent composition shall be 100% by mass.

[0095] <ph> The pH of the detergent composition of the present invention at 25°C is preferably 5 to 10, and more preferably 6 to 9. The pH (25°C) of the detergent composition is a value measured according to the method specified in JIS Z 8802:2011 "Method for Measuring pH". The pH of the detergent composition can be adjusted using the pH adjusting agent described above.

[0096] <Manufacturing method> The detergent composition of the present invention is manufactured by conventionally known manufacturing methods. One method for producing a detergent composition is to add components other than the pH adjuster to a portion of the water used as a solvent, mix them, adjust the pH to a desired level with a pH adjuster as needed, and then add the remaining water.

[0097] <How to use> The detergent composition of the present invention can be used for dishwashers, and should be used according to the model of the dishwasher and the degree of soiling of the dishes, etc. A method for cleaning objects using a dishwasher with a detergent composition includes a method that includes both washing and rinsing steps. As a washing method, for example, one may include a method comprising: a step of washing the objects to be washed while raising the temperature of a washing solution prepared by introducing tap water at room temperature (preferably around 5 to 30°C) into the dishwasher compartment to a predetermined washing temperature (temperature of the washing solution circulating during washing) (hereinafter referred to as the "washing step"); a step of rinsing the objects after washing with tap water at room temperature (hereinafter referred to as the "rinsing (1) step"); and a step of further rinsing the objects after the rinsing (1) step while raising the temperature of tap water at room temperature to preferably 70 to 75°C at a rate of 2 to 3°C / minute (hereinafter referred to as the "rinsing (2) step"). The washing time in the washing step is preferably 10 to 40 minutes. In a typical standard cycle, the washing temperature during the washing process is approximately 55-65°C, and the heating rate is approximately 2-3°C / minute. In a low-temperature cycle, for example, the washing temperature is approximately 35-45°C, and the heating rate is approximately 1°C / minute. The detergent composition of the present invention exhibits excellent cleaning power against protein and oil stains even in low-temperature washing, and for example, it exhibits excellent cleaning power even at a washing temperature of 35°C. The amount of the cleaning agent composition used per cycle is preferably 1 to 10 g per approximately 1 liter of tap water.

[0098] <Effects and Effects> The detergent composition of the present invention has high cleaning power against dirt adhering to objects to be washed, such as tableware. It also suppresses the adhesion of protein and oil stains to the glass surface of dishwashers. In particular, protein and oil stains tend to adhere easily to the glass surface of dishwashers and are difficult to remove because hydrogen bonds are formed between the hydroxyl groups on the glass surface and the carboxyl groups of the protein and oil stains. However, when using the detergent composition of the present invention, protein and oil stains become easier to remove from the glass surface, and when the dishwasher is used again, protein and oil stains are less likely to adhere to and accumulate on the glass surface.

[0099] The effects of this invention are not yet clear, but we surmise the following: (A) Component makes it easier to remove protein and oil stains that adhere to tableware and the glass surface of dishwashers, thereby suppressing accumulation during repeated washing. This is thought to be because component (A) is an anionic surfactant with a carboxyl group, and therefore can efficiently remove dirt through intermolecular forces such as hydrogen bonding. In particular, anionic surfactants with a carboxyl group tend to have excellent protein cleaning power, and it is thought that this also extends to oil stains that adhere and accumulate along with protein. (B) Component removes metal ions from the glass surface and metal ions from limescale (specifically, calcium carbonate, etc.) adhering to these surfaces, making it easier to suppress the adhesion of limescale and other dirt to the glass surface. This prevents sticky protein and oil stains from remaining on the rough limescale surface. The combination of component (A) and component (B) makes it possible to achieve both low foaming and cleaning power, which are typically in a trade-off relationship. This is achieved by using component (A), which has excellent low-foaming properties among anionic surfactants, and by combining it with component (B), which chelates metal ions in tap water, the cleaning power of component (A) is further enhanced, allowing for increased cleaning power even when using a small amount. In this way, it is believed that by further enhancing the effect of component (A) with component (B), even higher levels of low foaming and higher cleaning power can be achieved. [Examples]

[0100] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following description. Unless otherwise specified, the amounts of components used in each example are calculated on a pure content basis.

[0101] "Raw materials used" The following compounds were used as component (A). a-1: Disodium cocoyl glutamate (Asahi Kasei Chemicals "AminoSurfact ACDS-L"), in formula (a-1), R a1 R is a linear alkyl group having 7 to 17 carbon atoms. a2 R is a hydrogen atom, a3 This is a group represented by -CH2CH2CO2Na, M a1 This is a sodium ion. a-2: Disodium cocoyl glutamate / dipotassium mixture (Asahi Kasei Chemicals "AminoSurfact ACDP-L"), in formula (a-1), R a1 R is a linear alkyl group having 7 to 17 carbon atoms. a2 R is a hydrogen atom, a3 The group is represented by -CH2CH2CO2Na and -CH2CH2CO2K, M a1 These are sodium ions and potassium ions, a mixture of sodium ions and potassium ions in a 1:1 ratio. · a-3: Cocoyl glutamic acid diethanolamine (manufactured by Asahi Kasei Chemicals Corporation, "Aminosurfact ACMT-L"), in formula (a-1), R a1 is a linear alkyl group having 7 to 17 carbon atoms, R a2 is a hydrogen atom, R a3 is -CH2CH2CO2 - [N(CH2CH2OH)3] + is a group represented by, M a1 is [N(CH2CH2OH)3] + is. · a-4: Sodium cocoyl glycinate (manufactured by Ajinomoto Co., Inc., "Amilite GCS-12K"), in formula (a-1), R a1 is a linear alkyl group having 7 to 17 carbon atoms, R a2 is a hydrogen atom, R a3 is a hydrogen atom, M a1 is a sodium ion. · a-5: Sodium lauroyl methyl alaninate (manufactured by Lion Specialty Chemicals Co., Ltd., "Enacol L-30"), in formula (a-2), R a1 is a linear alkyl group having 11 carbon atoms, R a2 is a hydrogen atom, R a3 is a hydrogen atom, M a1 is a sodium ion

[0102] (B) As the component, the following compounds were used. · b-1: Sodium citrate (manufactured by Fuso Chemical Co., Ltd., trade name "Trisodium citrate purified citric acid (anhydrous)"). · b-2: Trisodium methylglycine diacetate (manufactured by BASF, trade name "Trisodium methylglycine diacetate (MGDA)"). · b-3: Tetrasodium glutamate diacetate (manufactured by Kresto, trade name "Tetrasodium glutamate diacetate (GLDA)"). · b-4: Tetrasodium ethylenediamine tetraacetate (manufactured by Tokyo Chemical Industry Co., Ltd., trade name "Tetrasodium ethylenediamine tetraacetate (EDTA)"). · b-5: Polycarboxylic acid-based polymer chelating agent (manufactured by Nippon Shokubai Co., Ltd., trade name "Aqualic TL-430", sodium acrylate / maleate copolymer, acrylic acid: maleic acid = 75 / 25 to 50 / 50, molecular weight: 50,000). · b-6: Polycarboxylic acid-based polymer chelating agent (manufactured by Nippon Shokubai Co., Ltd., trade name "Aqualic FN-001").

[0103] (C) The following compounds were used as components. · c1-1: Sodium monoalkyl sulfosuccinate (manufactured by Toho Chemical Industry Co., Ltd., trade name "Kohakool L-40"), sodium lauryl sulfosuccinate, in formula (c-1), R c11 is a linear or branched alkyl group, or a linear or branched alkenyl group, a mixture of carbon numbers 10, 12, and 14, t is 0, M c1 and M c11 are a mixture of sodium ions. · c1-2: Sodium monoalkyl sulfosuccinate (manufactured by Toho Chemical Industry Co., Ltd., trade name "Kohakool L-300"), sodium polyoxyethylene alkyl (alkyl group carbon number: 10 - 12) sulfosuccinate, in formula (c-1), R c11 is a linear or branched alkyl group, or a linear or branched alkenyl group, a mixture of carbon numbers 10 and 12, AO is an ethyleneoxy group, t is 3, M c1 and M c11 are a mixture of sodium ions. · c1-3: Sodium monoalkyl sulfosuccinate (manufactured by Toho Chemical Industry Co., Ltd., trade name "Kohakool L-400"), sodium polyoxyethylene alkyl (alkyl group carbon number: 12 - 16) sulfosuccinate, in formula (c-1), R c11 is a linear or branched alkyl group, or a linear or branched alkenyl group, a mixture of carbon numbers 12, 14, and 16, AO is an ethyleneoxy group, t is 4, M c1 and M c11 are a mixture of sodium ions. • c1-4: Sodium monoalkyl sulfosuccinate (manufactured by Nippon Shokubai Co., Ltd., product name "Softanol MES-9"), disodium polyoxyethylene alkyl (number of carbon atoms in the alkyl group: 12-14) sulfosuccinate, in formula (c-1), R c11 is a linear or branched alkyl group, or a linear or branched alkenyl group having 12, 13, and 14 carbon atoms, AO is an ethylene oxy group, t is 9, M c1 and M c11 This is a mixture of sodium ions. • c2-1: Sodium dialkyl sulfosuccinate (manufactured by Lion Specialty Chemicals Co., Ltd., product name "Ripal 870P"), in formula (c-2), R c11 and R c12 is a linear or branched alkyl group having 8 carbon atoms, or a linear or branched alkenyl group having 8 carbon atoms, where t and r are 0, and M c1 This is a sodium ion. • c3-1: Linear alkyl (C10) sulfate sodium (manufactured by Fluorochem Ltd., trade name "n-Decyl sodium sulfate"), C10AS, in formula (c-3), R c3 This is a linear alkyl group (n-decyl group) with 10 carbon atoms, M c1 This is a sodium ion.

[0104] The following compounds were used as component (D). d-1: Amylase (manufactured by Novozymes, product name "Achieve alpha 100L"). d-2: Protease (manufactured by Novozymes, product name "Blaze pro 100L"). d-3: Mannanase (manufactured by Novozymes, product name "Mannaway 200L"). d-4: Cellulase (manufactured by Novozymes, product name "Carezyme Premium 4500L"). d-5: Lipase (manufactured by Novozymes, product name "Lipex Evity 200L"). d-6: Amylase / protease mixed enzyme (Novozymes, product name "Intensa Core 200L").

[0105] The following compounds were used as optional components. (fragrance) • 0.05% by mass of any one of the fragrance compositions 1 to 4 listed in Tables 1 to 8 of Japanese Patent Publication No. 2020-132680, or any one of the fragrance components listed in Table 1. (pH adjuster) pH adjuster: Sodium hydroxide (48% sodium hydroxide, Kanto Chemical Co., Ltd.). Appropriate amount. pH adjuster: Sulfuric acid (reagent grade, Fujifilm Wako Pure Chemical Industries, Ltd.). Appropriate amount. (solvent) • Water: Ion-exchanged water. The amount is such that the total mass is 100% by mass.

[0106] Examples 1-43, Comparative Examples 1-3 <Preparation of detergent composition> 1000g of a kitchen detergent composition with the composition shown in the table was prepared using the following procedure. Component (B) was placed in a 1L beaker and thoroughly stirred with a magnetic stirrer (product name: F-606N, manufactured by Fine). Subsequently, an appropriate amount of pH adjuster was added as needed to ensure the pH at 25°C was in the range of 6-8. Then, components (A), (C), and any optional components were added. After mixing was complete, an appropriate amount of pH adjuster was added again as needed. Finally, component (D) and the amount of water necessary to bring the total volume to 100% by mass were added, and the mixture was stirred thoroughly to obtain the detergent composition. Note that the units for the amounts in the table are in mass percent, and all components are shown in terms of their pure content. The pH (25°C) of the composition was measured using a glass electrode pH meter (HM-30G, manufactured by Toa DKK Co., Ltd.) after adjusting the detergent composition to 25°C. The measurement method was carried out in accordance with JIS Z 8802:2011 "Method for measuring pH".

[0107] <Evaluation of dishwasher detergents> Each example and comparative example of the cleaning agent was evaluated using the evaluation method described below. The evaluation results are shown in Tables 1 to 10. A dishwasher (Panasonic Corporation, model NP-TML1) was used as the dishwasher.

[0108] (Evaluation of foam level inside the refrigerator) A single-person dishwasher (manufactured by Panasonic Corporation, model NP-TML1) was filled with 2g of detergent (standard usage amount for the dishwasher) or 6g (typical standard usage amount for various dishwasher detergents) and 6g of well-beaten whole egg. The tank was filled with 25°C tap water up to the FULL line, and the machine was operated (washing water volume: 1.4L). Ten minutes after the start of washing, the machine was stopped and the door was opened. Ten seconds later, the foaming inside the machine was observed, and the low foaming properties were evaluated based on the evaluation criteria below. The evaluation of the example and comparative example was rated as ○, ◎, ◎◎, and ◎◎◎ as passing grades. (Evaluation Criteria) ◎◎◎: Almost no foam was observed. ◎◎: Foam generation was observed, but it was at a level that allowed the bottom of the automatic dishwasher to be visually inspected. ◎: Foam formation was observed, but it only slightly covered the surface of the liquid. ○: Foam generation was observed, but the foam height was lower than the blade. △: Foam generation was observed, and the foam height reached the blades. ×: Foam generation was observed, the foam height exceeded the water spray nozzle, and air intrusion was confirmed. "Air intrusion" refers to a condition in which, when a large amount of foam is generated during cleaning, air enters the circulation pump, weakening the spray force and causing abnormal noise. In this test, the presence or absence of air intrusion was evaluated by checking for the presence or absence of abnormal noise.

[0109] (Evaluation of protein and oil stain accumulation on glass surfaces) For the cleaning test, we used detergent that had been left to stand for 3 months in a constant temperature room at 40°C. A single-person dishwasher (manufactured by Panasonic Corporation, model NP-TML1) was filled with 2g of detergent (standard usage for the dishwasher) or 6g (typical standard usage for various dishwasher detergents), 6g of well-beaten whole egg, and 8g of a mixed oil of beef tallow / lard / butter / salad oil = 3 / 3 / 3 / 1 (mass ratio). The tank was filled with 25°C 3°DH hard water up to the FULL line, and the machine was operated (washing water volume 1.4L). Thirty consecutive washes were performed under the above conditions, and the degree of clouding on the glass surface of the dishwasher was evaluated based on the evaluation criteria below. In this evaluation method, three professional evaluators performed the evaluation, and the scores of each evaluator were totaled. A total score of ○ or higher (7 points or higher) was considered a pass. (Evaluation Criteria) 5 points: It remains transparent, just as it was before the washing test. 4 points. There is a very slight haze in some areas, but it is not noticeable during normal use. 3 points: There is a very slight haze across the entire surface, but it is not noticeable during normal use. 2. A slight haze is visible across the entire surface, at a level that is noticeable during normal use. 1. The entire surface is cloudy, to an unpleasant degree. (Evaluation Criteria) ◎◎: The total score from the five expert evaluators was between 13 and 15 points. ◎: The total score from the five expert evaluators was between 12 and 10 points. ○: The total score from the five expert evaluators ranged from 7 to 9 points. △: The total score from the five expert evaluators ranged from 6 to 4 points. ×: The total score from the five expert evaluators was 3 points.

[0110] [Table 1]

[0111] [Table 2]

[0112] [Table 3]

[0113] [Table 4]

[0114] [Table 5]

[0115] [Table 6]

[0116] [Table 7]

[0117] [Table 8]

[0118] [Table 9]

[0119] [Table 10]

[0120] The amounts listed in Tables 1-10 are calculated on a pure content basis. Ingredients not listed in the table are not included. In the table, "appropriate amount" for pH adjuster content refers to the amount required to achieve the pH shown in the table. In the table, "balance" for water content refers to the amount required to make the detergent composition 100% by mass.

[0121] As is clear from Tables 1 to 10, the detergent compositions of each example produced a foam height of "〇" to "◎◎◎" inside the dishwasher, and the accumulation of protein and oil stains on the glass surface was "〇" to "◎◎". Examples 24-28, in which the amount of detergent was varied, yielded comparable results to the other examples in terms of foam height and protein / oil stain accumulation inside the dishwasher. This indicates that the effects of the present invention can be obtained regardless of the amount of detergent, or in other words, regardless of the size of the dishwasher.

[0122] In Comparative Example 1, which did not contain component (A), and Comparative Example 2, which did not contain component (B), the accumulation of protein and oil stains on the glass surface was "×". In Comparative Example 3, where only component (C) was added as a surfactant instead of component (A), the foam level inside the dishwasher was "△". From the above results, it has been confirmed that by applying the present invention, it is possible to achieve both low foaming and cleaning performance, and furthermore, it is possible to remove and suppress fogging on the glass surface of a dishwasher.

[0123] Although not described in the above examples, the following detergent compositions, which have already been manufactured or will be manufactured in the future, can also be manufactured in the same manner as the above examples, based on common technical knowledge, to obtain similar effects.

[0124] <Prescription Example 1> • Disodium cocoyl glutamate: 2% by mass. Anhydrous citric acid: 2% by mass. Methylglycine diacetate trisodium: 6% by mass. Monoethanolamine: 0.5% by mass. Calcium chloride: 0.3% by mass. ·Yellow No. 4: 3ppm. • Amylase / protease mixed enzyme, manufactured by Novozymes, product name 'Intensa Core 200L': 0.35% by mass. ·Fragrance: 0.04% by mass. Sodium benzoate: 3.5% by mass. BIT (1,2-benzisothiazolin-3-one): 180 ppm. • Purified water: Balance.

[0125] <Prescription Example 2> • Disodium cocoyl glutamate: 2% by mass. Anhydrous citric acid: 2% by mass. Methylglycine diacetate trisodium: 6% by mass. Monoethanolamine: 0.5% by mass. Propylene glycol: 5% by mass. Calcium chloride: 0.3% by mass. ·Yellow No. 4: 3ppm. • Amylase / protease mixed enzyme, manufactured by Novozymes, product name 'Intensa Core 200L': 0.35% by mass. ·Fragrance: 0.04% by mass. Xanthan gum: 0.2% by mass. Sodium benzoate: 3.5% by mass. BIT (1,2-benzisothiazolin-3-one): 180 ppm. • Purified water: Balance.< / ph>

Claims

1. A dishwasher detergent composition containing component (A) and component (B), The aforementioned component (A) is an acyl amino acid-based surfactant, The aforementioned (B) component is a chelating agent, comprising a dishwasher detergent composition.

2. The dishwasher detergent composition according to claim 1, wherein component (B) is one or more selected from the group consisting of aminocarboxylic acid-based chelating agents and hydroxycarboxylic acid-based chelating agents.

3. Furthermore, it contains component (C), The dishwasher detergent composition according to claim 1 or 2, wherein the (C) component is an anionic surfactant represented by the following formula (c). 【Chemistry 1】 In formula (c), R ｃ１ is a linear or branched alkyl group having 6 to 18 carbon atoms, or a linear or branched alkenyl group having 6 to 18 carbon atoms, X is a single bond or -O-(AO) ｔ -, AO is an alkyleneoxy group having 2 to 4 carbon atoms, t is an integer from 0 to 10 indicating the average number of repetitions, s is a number of 0 or 1, u is a number of 0 or 1, Z is a hydrogen atom, -CH ２ -CO ２ M ｃ1１ group represented by, or -C(=O)-(OA) ｒ -OR ｃ２ group represented by, M ｃ１１ is a hydrogen atom or a counter ion, R ｃ２ is a linear or branched alkyl group having 6 to 18 carbon atoms, or a linear or branched alkenyl group having 6 to 18 carbon atoms, Y is a single bond or -O-, M ｃ１ is a counter ion.

4. Furthermore, it contains component (D), The dishwasher detergent composition according to claim 1 or 2, wherein the component (D) is an enzyme.

5. A dishwasher detergent composition according to claim 1 or 2, which is liquid at 25°C.

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