High-concentration neutral liquid detergent composition

Abstract

Provided is a highly concentrated neutral liquid detergent composition that maintains an appropriate viscosity even when diluted with water and is excellent in low-temperature stability, detergency, and foam persistence. 【Solution means】 The highly concentrated neutral liquid detergent composition contains, as component (A), linear alkylbenzene sulfonic acid and / or its salt, as component (B), fatty acid alkanolamide, as component (C), a water-soluble salt, and as component (D), an anionic surfactant other than (A), and is configured such that the total amount of component (A) and component (B) is 20% by mass or more and 55% by mass or less.

Description

Technical Field

[0001] The present invention relates to a high-concentration neutral liquid detergent composition.

Background Art

[0002] With the increasing awareness of consumers towards the environment, the importance of developing and selling environmentally friendly products has been increasing, and products that consider the environment are also required in the detergent field. Under such circumstances, since reduction of waste such as packaging containers and reduction of energy during transportation are expected, concentration of detergent compositions and reduction in size of containers for housing detergent compositions are being promoted. Further, since the environmental load can be reduced by preventing overuse of detergents, detergents having a proper viscosity when diluted with water during use and showing good viscosity such that the detergent does not easily drip when dispensed onto a cleaning tool such as a sponge have been variously developed.

[0003] As a conventional high-concentration detergent composition, Patent Document 1 discloses a concentrated liquid detergent characterized by having a first phase and a second phase which are phases showing a separated appearance at 15°C, and when diluted with water at a predetermined ratio, the first phase and the second phase are compatible and become a homogeneous one-phase liquid. Further, Patent Document 2 describes a high-concentration neutral liquid detergent composition containing a total of 60 to 90% by weight of a linear alkylbenzene sulfonic acid ethanolamine salt and a fatty acid alkanolamide, and adjusting a viscosity reducing agent and a viscosity modifier so as to have a proper viscosity when diluted with water. Furthermore, Patent Document 3 describes a liquid detergent containing 30 to 60% by mass of surfactants such as an anionic surfactant and an amine oxide type surfactant and having a proper viscosity when diluted with water.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

[0005] In Patent Document 1, since the concentrated liquid detergent is separated into two phases, a first phase and a second phase, when diluted with water, the components may be biased, and there is a risk that sufficient detergency cannot be exhibited. The high-concentration neutral liquid detergent composition of Patent Document 2 contains a high-concentration surfactant with a blending amount of linear alkylbenzene sulfonate and fatty acid alkanolamide of 60 to 90% by mass, so there is concern about the environmental impact of the composition, and furthermore, the detergency, low-temperature stability, and foam persistence of the composition are unknown. Patent Document 3 has an appropriate viscosity even when diluted with water and is excellent in detergency and low-temperature stability for oils and fats, but the viscosity decreases when the dilution ratio is increased, and the low-temperature stability of the diluted solution is unknown.

[0006] The present invention is an invention found to solve the above problems. That is, an object of the present invention is to provide a high-concentration neutral liquid detergent composition that maintains an appropriate viscosity even when diluted with water and is excellent in low-temperature stability, detergency, and foam persistence. [Means for Solving the Problems]

[0007] As a result of intensive studies to solve the above problems, the present inventor has found that a composition containing (A) linear alkylbenzene sulfonic acid and / or its salt as a component, (B) fatty acid alkanolamide as a component, (C) component At least one selected from ammonium hydrogen carbonate, ammonium acetate, diammonium hydrogen citrate, triammonium citrate, monoethanolamine hydrochloride, monoethanolamine sulfate, monoethanolamine acetate, monoethanolamine citrate, diethanolamine hydrochloride, diethanolamine sulfate, diethanolamine acetate, diethanolamine citrate, triethanolamine hydrochloride, triethanolamine sulfate, triethanolamine acetate, triethanolamine citrate , and (D) an anionic surfactant other than (A) as a component , and water as component (E) , and characterized in that the total amount of the component (A) and the component (B) is 20% by mass or more and 55% by mass or less, is excellent in low-temperature stability while maintaining an appropriate viscosity when diluted with water, and is also excellent in detergency and foam persistence, and has completed the present invention.

[0008] That is, the present invention is (1) As component (A), linear alkylbenzene sulfonic acid and / or its salt; as component (B), fatty acid alkanolamide; as component (C), At least one selected from ammonium hydrogen carbonate, ammonium acetate, diammonium hydrogen citrate, triammonium citrate, monoethanolamine hydrochloride, monoethanolamine sulfate, monoethanolamine acetate, monoethanolamine citrate, diethanolamine hydrochloride, diethanolamine sulfate, diethanolamine acetate, diethanolamine citrate, triethanolamine hydrochloride, triethanolamine sulfate, triethanolamine acetate, triethanolamine citrate , and as component (D), an anionic surfactant other than (A) , and water as component (E) containing, wherein the total amount of component (A) and component (B) is 20% by mass or more and 55% by mass or less, a high-concentration neutral liquid detergent composition (2) The high-concentration neutral liquid detergent composition according to (1), wherein the value of the mass ratio (D) / (A) of the mass of component (D) to the mass of component (A) is 0.0020 or more and 0.70 or less ( 3 )(1) or (2) The high-concentration neutral liquid detergent composition, characterized in that component (D) contains at least one selected from α-olefin sulfonate, polyoxyethylene alkyl ether sulfate, and alkane sulfonate ( 4 )(1) or (2) The high-concentration neutral liquid detergent composition, characterized in that component (F) contains at least one selected from carboxylic acid type amphoteric surfactants ( 5 )(1) or (2) The high-concentration neutral liquid detergent composition, characterized in that the value of the mass ratio (F) / ((A)+(B)) of the mass of component (F) to the total amount of component (A) and component (B) is 0.0030 or more and 0.50 or less (4) of the high-concentration neutral liquid detergent composition ( 6 )(1) or (2) The high-concentration neutral liquid detergent composition, characterized in that component (G) contains at least one selected from alcohol solvents, glycol solvents, and urea which is the gist of the invention

Effects of the Invention

[0009] The high-concentration neutral liquid detergent composition of the present invention is excellent in low-temperature stability, detergency, and foam persistence while maintaining an appropriate viscosity when diluted with water for use

Modes for Carrying Out the Invention

[0010] The high-concentration neutral liquid detergent composition of the present invention contains, as component (A), linear alkylbenzene sulfonic acid and / or its salt, as component (B), fatty acid alkanolamide, as component (C), a water-soluble salt, and as component (D), an anionic surfactant other than (A), and is characterized in that the total amount of component (A) and component (B) is 20% by mass or more and 55% by mass or less.

[0011] (A) Linear alkylbenzene sulfonic acid and / or its salt The linear alkylbenzene sulfonic acid and / or its salt used in the present invention contributes to the improvement of detergency, foaming property, and foam persistence, and the maintenance of appropriate viscosity. The linear alkylbenzene sulfonic acid and / or its salt is not particularly limited, and any linear alkylbenzene sulfonic acid and / or its salt can be used alone or in combination of two or more. For example, the alkyl group of the linear alkylbenzene sulfonic acid can have 6 to 20 carbon atoms. More specifically, examples of the alkyl group include hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, lauryl group, tridecyl group, myristyl group, pentadecyl group, hexadecyl group, heptadecyl group, stearyl group, nonadecyl group, eicosyl group, etc. The linear alkylbenzene sulfonic acid and / or its salt is not particularly limited, but among them, it preferably has an alkyl group having 10 to 16 carbon atoms.

[0012] The linear alkylbenzene sulfonic acid and / or its salt usually exists and is commercially available in salt form. Examples of the linear alkylbenzene sulfonate include alkali metal salts, alkaline earth metals, alkanolamine salts, etc. of linear alkylbenzene sulfonic acid. Among them, alkali metal salts or alkanolamine salts are preferred. Examples of the alkali metal salt include sodium salt, potassium salt, etc. Examples of the alkaline earth metal include magnesium salt, etc. Examples of the alkanolamine salt include monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, 2-amino-2-methyl-1-propanol salt, diisopropanolamine salt, etc.

[0013] Specific examples of linear alkylbenzene sulfonates include sodium linear alkylbenzene sulfonate, potassium linear alkylbenzene sulfonate, monoethanolamine linear alkylbenzene sulfonate, diethanolamine linear alkylbenzene sulfonate, triethanolamine linear alkylbenzene sulfonate, and the like. Among these, from the viewpoints of foaming property, foam persistence, viscosity of the diluted solution, storage stability, and low-temperature stability of the undiluted solution and / or the diluted solution, potassium linear alkylbenzene sulfonate, monoethanolamine linear alkylbenzene sulfonate, and triethanolamine linear alkylbenzene sulfonate are preferable, and monoethanolamine linear alkylbenzene sulfonate is more preferable. These linear alkylbenzene sulfonates may be used alone or in combination of two or more.

[0014] The content of the component (A) in the high-concentration neutral liquid detergent composition used in the present invention is not particularly limited. However, from the viewpoints of detergency, foaming property, foam persistence, viscosity of the undiluted solution and / or the diluted solution, storage stability, and low-temperature stability of the undiluted solution and / or the diluted solution, it is preferably 15% by mass or more and 50% by mass or less, more preferably 18% by mass or more and 40% by mass or less, and even more preferably 20% by mass or more and 35% by mass or less, based on the total amount of the high-concentration neutral liquid detergent composition of the present invention. When the component (A) is 15% by mass or more, the desired detergency, foaming property, foam persistence, and viscosity of the undiluted solution and / or the diluted solution can be more reliably and sufficiently obtained. When it is 50% by mass or less, while sufficiently obtaining the effect corresponding to the addition amount, it is possible to more reliably prevent the viscosity of the undiluted solution and / or the diluted solution from becoming extremely high and the solubility in water, handling property, storage stability, and low-temperature stability of the undiluted solution and / or the diluted solution from deteriorating.

[0015] (B) Fatty acid alkanolamide The fatty acid alkanolamide used in the present invention contributes to the improvement of detergency, foaming property, foam persistence, and the maintenance of appropriate viscosity of the undiluted solution and / or diluted solution. The fatty acid alkanolamide used in the present invention is not particularly limited, and any fatty acid alkanolamide can be used alone or in combination of two or more. Fatty acid alkanolamide is an amide compound obtained by condensing a monoalkanolamine or dialkanolamine with a fatty acid. Examples of the fatty acid constituting the fatty acid alkanolamide include saturated or unsaturated fatty acids having 8 to 22 carbon atoms. Specifically, saturated fatty acids such as caprylic acid (C8), pelargonic acid (C9), capric acid (C10), undecylic acid (C11), lauric acid (C12), tridecylic acid (C13), myristic acid (C14), pentadecylic acid (C15), palmitic acid (C16), margaric acid (C17), stearic acid (C18), nonadecylic acid (C19), arachidic acid (C20), etc., and myristoleic acid (C14), palmitoleic acid (C16), oleic acid (C18), vaccenic acid (C18), linoleic acid (C18), (9,12,15)-linolenic acid (C18), (6,9,12)-linolenic acid (C18), eleostearic acid (C18), 8,11-eicosadienoic acid (C20), mead acid (C20), arachidonic acid (C20), etc. may be mentioned. Further, fatty acids derived from plant or animal oils and fats may be used as the fatty acid. In this case, usually, the fatty acid alkanolamide is a mixture of alkanolamides of a plurality of fatty acids. The plant-derived oil and fat is not particularly limited, and examples thereof include coconut oil, palm oil, palm kernel oil, safflower oil, grape oil, soybean oil, sunflower oil, corn oil, cottonseed oil, sesame oil, corn oil, olive oil, rapeseed oil, rice bran oil, peanut oil, olive oil, castor oil, etc. Examples of the animal-derived oil and fat include land animal oils and fats such as beef tallow, lard, mutton fat, and beef foot oil.

[0016] Examples of the alkanol constituting the fatty acid alkanolamide include alkylene glycols having 2 to 10 carbon atoms, preferably 2 to 4 carbon atoms, such as ethylene glycol, propylene glycol, tetramethylene glycol, pentamethylene glycol, and hexamethylene glycol. In addition to alkylene glycol, polyether polyols such as polyethylene glycol, polyoxypropylene glycol, polyhexamethylene ether glycol, and polytetramethylene ether glycol (PTMG) may be bonded to the amide group of fatty acid alkanolamide. Examples of the alkanolamine constituting the fatty acid alkanolamide include monoethanolamine, diethanolamine, and monoisopropanolamine. These alkanolamines can be easily synthesized by reacting ammonia with ethylene oxide or propylene oxide. Further, alkylene oxide may be added to the fatty acid alkanolamide.

[0017] Specific examples of fatty acid alkanolamides include those obtained by adding alkylene oxide to the above fatty acid alkanolamides such as diethanol laurate, diethanol laurate, diethanol lauric myristate, diethanol myristate, diethanol stearate, diethanol oleate, diethanol coconut oil fatty acid, diethanol palm kernel oil fatty acid, diethanol beef tallow fatty acid, monoethanol laurate, monoethanol myristate, monoethanol stearate, monoethanol oleate, monoethanol coconut oil fatty acid, monoethanol palm kernel oil fatty acid, polyoxyethylene monoethanol laurate, polyoxyethylene monoethanol coconut oil fatty acid, monoisopropanol laurate, polyoxypropylene monoethanol coconut oil fatty acid isopropylamide, etc. Among these, diethanol laurate, diethanol laurate, diethanol lauric myristate, diethanol myristate, diethanol stearate, diethanol oleate, diethanol coconut oil fatty acid, diethanol palm kernel oil fatty acid, diethanol beef tallow fatty acid are preferred, and diethanol coconut oil fatty acid and diethanol palm kernel oil fatty acid are more preferred. These fatty acid alkanolamides may be used alone or in combination of two or more.

[0018] More specifically, examples include Starhome DL from NOF Corporation as lauric acid diethanolamide, Amisol LMDE-Y from Kawaken Fine Chemicals Co., Ltd. as lauric acid myristic acid diethanolamide, Amisol SDE and Amisol SDHE from Kawaken Fine Chemicals Co., Ltd. as stearic acid diethanolamide, Starhome DO and Starhome DOS from NOF Corporation as oleic acid diethanolamide, CDE80-300 from WOODLAND FOOD INDUSTIRIES Pte.Ltd as coconut oil fatty acid diethanolamide, KDE800-300 from WOODLAND FOOD INDUSTIRIES Pte. Ltd as palm kernel oil fatty acid diethanolamide, and Starhome T from NOF Corporation as tallow fatty acid diethanolamide.

[0019] From the viewpoints of detergency, foaming property, foam persistence, viscosity of the undiluted solution and / or diluted solution, storage stability, and low-temperature stability of the undiluted solution and / or diluted solution, the content of component (B) used in the present invention is preferably 5.0% by mass or more and 25% by mass or less, more preferably 8.0% by mass or more and 20% by mass or less, and still more preferably 10% by mass or more and 18% by mass or less, based on the total amount of the high-concentration neutral liquid detergent composition of the present invention. By being 5.0% by mass or more, the detergency, foaming property, foam persistence, and viscosities of the undiluted solution and diluted solution can be made more surely and sufficiently as desired. By being 25% by mass or less, it is possible to more surely prevent the viscosities of the undiluted solution and / or diluted solution of the high-concentration neutral liquid detergent composition from becoming excessively high and the solubility in water, handleability, storage stability, and low-temperature stability of the undiluted solution and / or diluted solution from deteriorating.

[0020] In the high-concentration neutral liquid detergent composition of the present invention, it is necessary that the total amount of the mass of component (A) and the mass of component (B) is 20% by mass or more and 55% by mass or less. This value is preferably 20% by mass or more and 55% by mass or less, more preferably 25% by mass or more and 50% by mass or less, still more preferably 30% by mass or more and 50% by mass or less, and particularly preferably 30% by mass or more and 45% by mass or less. By this value being within the above range, it is possible to achieve both good detergency, foaming property, foam persistence, and appropriate viscosity.

[0021] In the high-concentration neutral liquid detergent composition of the present invention, the value of the mass ratio (A) / (B) of the mass of component (A) to the mass of component (B) is not particularly limited, but is, for example, 0.60 or more and 10 or less. It is preferable that this value is 0.60 or more and 10 or less, more preferably 0.70 or more and 8.0 or less, and even more preferably 0.80 or more and 7.0 or less. By including this value within the above range, good foaming property, foam persistence, and appropriate viscosity can be achieved simultaneously.

[0022] (C) Water-soluble salt The water-soluble salt used in the present invention contributes to maintaining the viscosity when the high-concentration neutral liquid detergent composition is diluted with water and to the low-temperature stability of the undiluted solution. The water-soluble salt is not particularly limited, and examples include alkali metal salts, alkaline earth metal salts, ammonium salts, alkanolamine salts, etc. of organic acids or inorganic acids. Among these, they can be used alone or in combination of two or more.

[0023] The organic acid is not particularly limited, and examples include formic acid, acetic acid, citric acid, succinic acid, oxalic acid, etc. Examples of the inorganic acid include sulfuric acid, hydrochloric acid, phosphoric acid, carbonic acid, boric acid, etc. Examples of phosphoric acid include orthophosphoric acid, metaphosphoric acid, hypophosphoric acid, phosphorous acid, hypophosphorous acid, pyrophosphoric acid, trimetaphosphoric acid, tetrametaphosphoric acid, pyrophosphorous acid, etc. Examples of the alkali metal element of the alkali metal salt include sodium and potassium. Examples of the alkaline earth metal element of the alkaline earth metal salt include magnesium, calcium, etc. The alkanolamine is not particularly limited, and examples include methanolamine, monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, 2-amino-2-methyl-1-propanol, diisopropanolamine, triisopropanolamine, etc.

[0024] Specifically, examples of the alkali metal salts include sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium sesquicarbonate, potassium sesquicarbonate, sodium acetate, potassium acetate, disodium hydrogen citrate, dipotassium hydrogen citrate, trisodium citrate, tripotassium citrate, sodium borate, potassium borate, sodium phosphate, potassium phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, etc. Examples of the alkaline earth metal salts include magnesium chloride, calcium chloride, magnesium sulfate, calcium sulfate, magnesium carbonate, calcium carbonate, magnesium acetate, calcium acetate, magnesium citrate, calcium citrate, magnesium borate, calcium borate, magnesium phosphate, calcium phosphate, etc. Examples of the ammonium salts include ammonium chloride, ammonium sulfate, ammonium hydrogen carbonate, ammonium acetate, diammonium hydrogen citrate, triammonium citrate, ammonium borate, ammonium dihydrogen phosphate, etc. Examples of the alkanolamine salts include monoethanolamine hydrochloride, monoethanolamine sulfate, monoethanolamine acetate, monoethanolamine citrate, diethanolamine hydrochloride, diethanolamine sulfate, diethanolamine acetate, diethanolamine citrate, triethanolamine hydrochloride, triethanolamine sulfate, triethanolamine acetate, triethanolamine citrate, etc.Among these, ammonium salts and alkanolamine salts are preferred, and ammonium chloride, ammonium sulfate, ammonium hydrogen carbonate, ammonium acetate, diammonium hydrogen citrate, triammonium citrate, monoethanolamine hydrochloride, monoethanolamine sulfate, monoethanolamine acetate, monoethanolamine citrate, diethanolamine hydrochloride, diethanolamine sulfate, diethanolamine acetate, diethanolamine citrate, triethanolamine hydrochloride, triethanolamine sulfate, triethanolamine acetate, and triethanolamine citrate are more preferred. Ammonium chloride, ammonium sulfate, diammonium hydrogen citrate, triammonium citrate, monoethanolamine hydrochloride, monoethanolamine sulfate, monoethanolamine citrate, diethanolamine hydrochloride, diethanolamine sulfate, diethanolamine citrate, triethanolamine hydrochloride, triethanolamine sulfate, and triethanolamine citrate are even more preferred. Ammonium chloride, ammonium sulfate, diammonium hydrogen citrate, triammonium citrate, monoethanolamine hydrochloride, monoethanolamine sulfate, diethanolamine hydrochloride, diethanolamine sulfate, triethanolamine hydrochloride, and triethanolamine sulfate are particularly preferred. From the viewpoint of maintaining an appropriate viscosity or better realizing the low-temperature stability of the stock solution, it is preferable to include ammonium salts of organic acids such as diammonium hydrogen citrate, ammonium salts of inorganic acids such as ammonium chloride and ammonium sulfate, monoethanolamine salts of organic acids such as monoethanolamine citrate, and monoethanolamine salts of inorganic acids such as monoethanolamine hydrochloride and monoethanolamine sulfate. These water-soluble salts may be used alone or in combination of two or more.

[0025] The content of component (C) used in the present invention is preferably 0.30% by mass or more and 10% by mass or less, more preferably 1.0% by mass or more and 9% by mass or less, still more preferably 2.0% by mass or more and 8.0% by mass or less, based on the total amount of the high-concentration neutral liquid detergent composition of the present invention, from the viewpoints of maintaining an appropriate viscosity of the diluted liquid and low-temperature stability. When it is 0.30% by mass or more, the viscosity of the diluted liquid can be more surely made sufficient. When it is 10% by mass or less, it is possible to more surely prevent the viscosity of the diluted liquid of the high-concentration neutral liquid detergent composition from becoming excessively high, and the solubility in water, handleability, and low-temperature stability of the undiluted liquid and / or the diluted liquid from deteriorating.

[0026] (D) Anionic surfactant other than component (A) The anionic surfactant other than component (A) ((D) component) used in the present invention contributes to improving foaming property, foam persistence, and maintaining an appropriate viscosity of the diluted liquid. The anionic surfactant other than component (A) used in the present invention is not particularly limited as long as it is an anionic surfactant that exhibits the effects of the present invention. For example, fatty acids, alkenyl succinic acids, polyoxyalkylene alkyl or alkenyl ether carboxylic acids, alkylol sarcosines, alkyl or alkenyl sulfates, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, amide ether sulfates, olefin sulfonic acids, alkane sulfonic acids, alkyl diphenyl ether disulfonic acids, dialkyl sulfosuccinic acids, polyoxyalkylene alkyl ether sulfosuccinic acid esters, acyl tauric acids, alkyl monophosphates, alkyl triphosphates, polyoxyalkylene alkyl ether phosphates, dipolyoxyalkylene alkyl ether phosphates, tripolyoxyalkylene alkyl ether phosphates, tripolyoxyalkylene alkyl ether phosphoric acids, and their alkali metal salts, ammonium salts, etc. can be mentioned. Among these, olefin sulfonic acid or its salt, polyoxyethylene alkyl ether sulfate or its salt, alkane sulfonic acid or its salt are preferred, and α-olefin sulfonic acid or its salt is more preferred. These anionic surfactants may be used alone or in combination of two or more.

[0027] The above anionic surfactant is not particularly limited, but preferably has an alkyl group having 8 to 20 carbon atoms or an alkenyl group having 8 to 20 carbon atoms. The alkyl group or alkenyl group may be linear or branched.

[0028] When the above anionic surfactant is in a salt form, it can be, for example, a salt such as an alkali metal salt, an alkaline earth metal salt, or an alkanolamine salt. Examples of the alkali metal salt include sodium salt and potassium salt. Examples of the alkaline earth metal salt include magnesium salt. Examples of the alkanolamine salt include monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, 2-amino-2-methyl-1-propanol salt, and diisopropanolamine salt.

[0029] The alkyl group of the alkyl sulfate ester salt preferably has 8 to 18 carbon atoms. Examples of the alkyl sulfate ester salt include sodium lauryl sulfate, triethanolamine lauryl sulfate, sodium myristyl sulfate, and sodium cetyl sulfate. The alkyl group of the polyoxyalkylene alkyl ether sulfate ester salt preferably has 10 to 18 carbon atoms. Further, the polyoxyalkylene alkyl ether sulfate ester salt has an oxyethylene group and / or an oxypropylene group, and the average number of repeating units n of the oxyethylene group is preferably 1 to 20, more preferably 1 to 15, and even more preferably 1 to 5, and the average number of repeating units m of the oxypropion group is preferably from 0 to 1. Examples of the polyoxyalkylene alkyl ether sulfate ester salt include sodium polyoxyethylene lauryl ether sulfate, triethanolamine polyoxyethylene lauryl ether sulfate, sodium polyoxyethylene alkyl (C12, C13) ether sulfate, sodium polyoxyethylene alkyl (C12, C14) ether sulfate, and sodium polyoxyethylene alkyl (C10-C18) ether sulfate.

[0030] More specifically, examples include Teikapo NE7030 from Teika Co., Ltd. as sodium polyoxyethylene lauryl ether sulfate, Emal 20T from Kao Corporation as triethanolamine polyoxyethylene lauryl ether sulfate, Emal 20CM from Kao Corporation as sodium polyoxyethylene alkyl (C12, C13) ether sulfate, Persoft EF from NOF Corporation as sodium polyoxyethylene alkyl (C12, C14) ether sulfate, Persoft EK and Persoft EL from NOF Corporation as sodium polyoxyethylene alkyl (C10 - C18) ether sulfate.

[0031] The alkenyl group of the α-olefin sulfonic acid or its salt is not particularly limited, but preferably has 8 to 20 carbon atoms. For example, sodium tetradecene sulfonate, sodium α-olefin sulfonate having 14 to 16 carbon atoms, etc. may be mentioned.

[0032] More specifically, examples include HOSTAPUR OS Liq from Clariant Japan K.K. as sodium α-olefin sulfonate having 14 to 16 carbon atoms.

[0033] The alkane sulfonic acid or its salt and the secondary alkane sulfonic acid or its salt are not particularly limited, but it is preferable to use an alkane sulfonate having 10 to 18 carbon atoms. For example, sodium secondary alkane (C10 - 18) sulfonate, sodium secondary alkane (C14 - C17) sulfonate, sodium alkane (C10 - 18) sulfonate, etc. may be mentioned.

[0034] More specifically, examples include the HOSTAPUR SAS series from Clariant Japan K.K. as sodium secondary alkane (C10 - 18) sulfonate, and Latemul PS from Kao Corporation as sodium alkane (C10 - 18) sulfonate.

[0035] The alkyl group of the alkyl diphenyl ether sulfonate is preferably an alkyl group having 8 to 18 carbon atoms. Examples of the alkyl diphenyl ether sulfonate include sodium alkyl (C12) diphenyl ether sulfonate and the like.

[0036] More specifically, examples of sodium alkyl (C12) diphenyl ether sulfonate include Perex SS-H and Perex SS-L of Miyoshi Oil & Fat Co., Ltd.

[0037] The sulfosuccinate is a succinic acid alkyl ester having a sulfo group, and the alkyl group preferably has 6 to 18 carbon atoms. Specific examples of the sulfosuccinate include sodium dioctyl sulfosuccinate, sodium didecyl sulfosuccinate, sodium didodecyl sulfosuccinate, sodium di-2-ethylhexyl sulfosuccinate, and the like.

[0038] More specifically, examples of sodium dioctyl sulfosuccinate include Perex OT-P, and examples of sodium di-2-ethylhexyl sulfosuccinate include Liparol 860K and Liparol 870P.

[0039] Component (D) used in the present invention is preferably 0.10% by mass or more and 10% by mass or less, more preferably 0.30% by mass or more and 8.0% by mass or less, still more preferably 0.30% by mass or more and 7.0% by mass or less, and particularly preferably 0.50% by mass or more and 7.0% by mass or less, based on the total amount of the high-concentration neutral liquid detergent composition of the present invention, from the viewpoints of detergency, foaming property, foam persistence, and viscosity of the diluted solution. When it is 0.10% by mass or more, good detergency, foaming property, and foam persistence can be more surely and sufficiently improved. When it is 10% by mass or less, addition of an excessive component (D) that does not match the effect can be prevented, and a decrease in the viscosity of the diluted solution can be more surely prevented.

[0040] In the high-concentration neutral liquid detergent composition of the present invention, the value of the mass ratio (D) / (A) of the mass of component (D) to the mass of component (A) is not particularly limited, but can be, for example, 0.0020 or more and 0.70 or less. It is preferable that this value is 0.0020 or more and 0.70 or less, more preferably 0.0020 or more and 0.60 or less, still more preferably 0.010 or more and 0.40 or less, and particularly preferably 0.010 or more and 0.30 or less. By including this value within the above range, good detergency, foaming property, foam persistence, and appropriate viscosity can be achieved simultaneously.

[0041] The high-concentration neutral liquid detergent composition of the present invention contains water as component (E). As the water, tap water, softened water, pure water, RO water, ion-exchanged water, or distilled water can be used. Examples of tap water include the tap water in Arakawa-ku, Tokyo (pH = 7.6, total alkalinity (in terms of calcium carbonate) 40.5 mg / L, German hardness 2.3°DH (of which calcium hardness is 1.7°DH and magnesium hardness is 0.6°DH), chloride ion 21.9 mg / L, sodium and its compounds 15 mg / L, nitrate nitrogen and nitrite nitrogen 1.2 mg / L, fluorine and its compounds 0.1 mg / L, boron and its compounds 0.04 mg / L, total trihalomethane 0.016 mg / L, residual chlorine 0.4 mg / L, organic matter (total organic carbon content) 0.7 mg / L). The water of component (E) of the present invention is the remainder with respect to the total amount of the above components (A) to (D), or the remainder with respect to the total amount of components (A) to (D) and other optional components.

[0042] The high-concentration neutral liquid detergent composition of the present invention can contain a carboxylic acid type amphoteric surfactant as the component (F). The carboxylic acid type amphoteric surfactant contributes to the improvement of detergency, foaming property, foam persistence, and maintenance of appropriate viscosity of the diluted solution. For example, alkyldimethylaminoacetic acid betaine, alkylamidopropyl betaine, alkyldimethylaminosulfobetaine, alkylamino(mono or di)propionate, alkylaminodiacetate, alkylimidazolinium betaine, alkylaminoethyl glycine, alkyldiaminoethyl glycine, glycine n-(3-aminopropyl)C10~16 derivative, alkylpolyaminoethyl glycine, alkyl β-alanine, alkyl aspartic acid or its salt, etc. can be mentioned. The above carboxylic acid type amphoteric surfactant is not particularly limited, but preferably has an alkyl group having 8 to 18 carbon atoms. The alkyl group may be linear or branched. Among these, the carboxylic acid type amphoteric surfactant is preferred, the betaine type amphoteric surfactant and the amino acid type surfactant are preferred, alkyldimethylaminoacetic acid betaine, alkylamidopropyl betaine, alkylamino(mono or di)propionate are more preferred, and alkylamidopropyl betaine is even more preferred. These carboxylic acid type amphoteric surfactants may be used alone or in combination of two or more.

[0043] The carbon number of the alkyl group of the above alkyldimethylaminoacetic acid betaine is not particularly limited, but is preferably 8 or more and 18 or less. More specifically, as the above alkyldimethylaminoacetic acid betaine, lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, etc. can be mentioned. Examples of the above alkylamidopropyl betaine include coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, myristic acid amidopropyl betaine, and ricinoleic acid amidopropyl betaine. Examples of the above alkylimidazolinium betaine include 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, 2-alkyl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine, and the like.

[0044] More specifically, as lauryldimethylaminoacetic acid betaine, IMEX DLB 35 of InterMed Manufacturing Sdn.Bhd.; as myristyldimethylaminoacetic acid betaine, Recabion A-200 of Shin Nippon Rika Co., Ltd.; as stearyldimethylaminoacetic acid betaine, Amphitol 86B of Kao Corporation; as coconut oil fatty acid amidopropyl betaine, Recabion B-200 manufactured by Shin Nippon Rika Co., Ltd.; as palm oil fatty acid amidopropyl betaine, Nissan Anon BDC-SF of NOF Corporation; as lauric acid amidopropyl betaine, IMEX LB 30 of InterMed Manufacturing Sdn.Bhd.; as myristic acid amidopropyl betaine, Revon MY-30W of Sanyo Chemical Industries, Ltd.; as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, Softazolin CH of Kawa Ken Fine Chemicals Co., Ltd.; as 2-alkyl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine, Energy Call CNS of Lion Specialty Chemicals Co., Ltd. are included.

[0045] Examples of the above alkylamino(mono- or di-)propionate, alkylaminoethylglycine, alkyldiaminoethylglycine, alkylaspartic acid or its salt include dodecyldiaminoethylglycine, tetradecyldiaminoethylglycine, dodecyldiaminoethylglycine chloride, tetradecyldiaminoethylglycine chloride, sodium laurylaminopropionate, sodium lauryldiaminopropionate, lauryl, laurylaspartic acid, potassium laurylaspartate, myristylaspartic acid, potassium myristylaspartate, and the like.

[0046] More specifically, examples of dodecyldiaminoethylglycine include Levon S from Sanyo Chemical Industries, Ltd.; examples of dodecyldiaminoethylglycine chloride include Levon T-2 from Sanyo Chemical Industries, Ltd.; examples of sodium laurylaminopropionate include Levon APL from Sanyo Chemical Industries, Ltd.; examples of sodium lauryldiaminopropionate include Energy Call DP-30 from Lion Specialty Chemicals Co., Ltd.; and examples of potassium laurylaspartate include N-je Bon ASP-12KL from Shin Nippon Rika Co., Ltd.

[0047] (F) When the component is used in the present invention, from the viewpoints of detergency, foaming property, foam persistence, viscosity of the diluted solution, and storage stability, it is preferably 0.10% by mass or more and 10% by mass or less, more preferably 0.3% by mass or more and 7.0% by mass or less, still more preferably 0.50% by mass or more and 6.0% by mass or less, and particularly preferably 0.50% by mass or more and 5.0% by mass or less, based on the total amount of the high-concentration neutral liquid detergent composition of the present invention. When it is 0.10% by mass or more, good detergency, foaming property, foam persistence, and sufficient viscosity of the diluted solution can be obtained more reliably. When it is 10% by mass or less, it is possible to more reliably prevent the viscosity of the diluted solution of the high-concentration neutral liquid detergent composition from becoming excessively high and the solubility in water, handleability, and low-temperature stability from deteriorating.

[0048] In the high-concentration neutral liquid detergent composition of the present invention, the value of the mass ratio (F) / ((A)+(B)) of the mass of the (F) component to the total amount of the (A) component and the (B) component is not particularly limited, but can be, for example, 0.0030 or more and 0.50 or less. This value is preferably 0.005 or more and 0.30 or less, and more preferably 0.01 or more and 0.20 or less. When this value is within the above range, good detergency, foaming property, foam persistence, and an appropriate viscosity of the diluted solution can be achieved simultaneously.

[0049] The high-concentration neutral liquid detergent composition of the present invention can contain an alcohol-based solvent, a glycol-based solvent, and urea as component (G). Component (G) contributes to improving the storage stability of the stock solution and the low-temperature stability of the stock solution and / or the diluted solution. Examples of the alcohol-based solvent include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methoxyethanol, 2-ethoxyethanol, 2-ethylhexanol, 3-methoxy-3-methyl-1-butanol, benzyl alcohol, phenoxyethanol, and the like. Examples of the glycol-based solvent include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, isoprene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,2-pentylene glycol, hexylene glycol, and the like. These may be used alone or in combination of two or more. Among these, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methoxyethanol, 2-ethoxyethanol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, isoprene glycol, and urea are preferred, ethanol, diethylene glycol monobutyl ether, polyethylene glycol, propylene glycol, and urea are more preferred, and ethanol, polyethylene glycol, propylene glycol, and urea are even more preferred.

[0050] Component (G) used in the present invention is preferably 1.0% by mass or more and 30% by mass or less, more preferably 3.0% by mass or more and 25% by mass or less, still more preferably 5.0% by mass or more and 20% by mass or less, and particularly preferably 10% by mass or more and 20% by mass or less, based on the total amount of the high-concentration neutral liquid detergent composition of the present invention, from the viewpoints of storage stability of the undiluted solution, low-temperature stability of the undiluted solution and / or diluted solution, and viscosity of the diluted solution. By being 1.0% by mass or more, sufficient storage stability and more reliable low-temperature stability of the undiluted solution and / or diluted solution can be obtained. By being 30% by mass or less, it is possible to more reliably prevent the case where an appropriate viscosity cannot be obtained in the undiluted solution and / or diluted solution or the case where the storage stability deteriorates.

[0051] In the high-concentration neutral liquid detergent composition of the present invention, if necessary, a pH adjuster, a chelating agent, a preservative, an edible pigment, a fragrance, a metal corrosion inhibitor, a natural extract, a thickener, an enzyme, etc. can be further blended.

[0052] The pH of the high-concentration neutral liquid detergent composition of the present invention is not particularly limited, but is, for example, 6 to 8 at 25°C. By the pH being 6 or more, the storage stability of the undiluted solution can be made sufficient, and by the pH being 8 or less, the prevention of rough hands can be made good. As the pH adjuster, when the pH at 25°C is less than 6, for example, sodium hydroxide, potassium hydroxide, sodium acetate, sodium carbonate, monoethanolamine, diethanolamine, triethanolamine, etc. are used, and when the pH exceeds 8, sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, sulfamic acid, citric acid, acetic acid, etc. are used. However, the pH adjuster used in the present application excludes component (C). These may be used alone or in combination of two or more. The above pH is measured by the method of the examples described later.

[0053] Examples of chelating agents include, for example, nitrilotriacetic acid or its salts, ethylenediaminetetraacetic acid or its salts, hydroxyethylenediaminetriacetic acid or its salts, diethylenetriaminepentaacetic acid or its salts, triethylenetetraminehexaacetic acid or its salts, hydroxyethyliminodiacetic acid or its salts, dihydroxyethylglycine or its salts, methylglycinediacetic acid or its salts, glutamic acid diacetic acid or its salts, aspartic acid diacetic acid or its salts, β-alanine diacetic acid or its salts, tripolyphosphoric acid or its salts, and the like. Examples of the salts of the chelating agents include alkali metal salts such as sodium salts and potassium salts, and they may be used alone or in combination of two or more.

[0054] Examples of preservatives include, for example, sodium hypochlorite, potassium hypochlorite, hydrogen peroxide, ε-polylysine, poly-γ-glutamic acid, nisin, CMIT (5-chloro-2-methyl-4-isothiazolin-3-one), MIT (2-methyl-4-isothiazolin-3-one), BIT (1,2-benzisothiazolin-3-one), BBIT (N-n-butyl-benzisothiazolin-3-one), OIT (2-n-octyl-4-isothiazolin-3-one), and the like.

[0055] Examples of food colors include, for example, Food Red No. 2 (amaranth), Food Red No. 3 (erythrosine), Food Red No. 40 (allura red AC), Food Red No. 102 (new cocchineal), Food Red No. 104 (fluorescein), Food Red No. 105 (rose bengal), Food Red No. 106 (acid red), Food Yellow No. 4 (tartrazine), Food Yellow No. 5 (sunset yellow FCF), Food Blue No. 1 (brilliant blue FCF), Food Blue No. 2 (indigocarmine), and the like.

[0056] Examples of the fragrance include natural fragrances, synthetic fragrances, or blended fragrances thereof. Examples of the metal corrosion inhibitor include polycarboxylic acids such as short-chain dicarboxylic acids or tricarboxylic acids, phosphate esters, benzotriazole, triazoles such as tolyltriazole or mercaptobenzothiazole, phosphonic acids such as 1-hydroxyethylidene-1,1-diphosphonic acid, adipic acid, glutaric acid, or succinic acid. Examples of the natural extract include natural extracts derived from plants such as plants of the Asclepiadaceae family, Rubiaceae family, Brassicaceae family, Poaceae family, Theaceae family, Asteraceae family, Lamiaceae family, Zingiberaceae family, Camelliaceae family, Solanaceae family, Cupressaceae family, Moraceae family, Vitaceae family, Fabaceae family, Rutaceae family, and Liliaceae family, and natural extracts derived from animals such as lysozyme and white shrimp protein extract. Examples of the thickener include carrageenan, xanthan gum, guar gum, locust bean gum, ghatti gum, karaya gum, pectin, and the like. Examples of the enzyme include lipase, alkaline amylase, amylase, cellulase, protease, pullulanase, and the like.

[0057] The viscosity of the high-concentration neutral liquid detergent composition of the present invention is not particularly limited, but it is preferably 70 to 300 mPa·s, more preferably 80 to 250 mPa·s, and particularly preferably 90 to 230 mPa·s when the temperature of the detergent composition is 25°C. When the viscosity is 70 mPa·s or more, it is possible to prevent excessive discharge and an increase in the amount used when taking the high-concentration neutral liquid detergent composition from the container to the sponge, and it can be used economically. When the viscosity is 300 mPa·s or less, it is possible to uniformly dissolve it without taking time to dissolve in water, obtain good detergency, and also make the handling property during liquid transfer sufficient. The viscosity was measured by the method of the examples described below.

[0058] When the high-concentration neutral liquid detergent composition of the present invention is diluted with water (for example, when diluted 6-fold or 8-fold), the viscosity is not particularly limited, but when the temperature of the detergent composition is 25 ° C, it is preferably 70 to 500 mPa·s, more preferably 80 to 450 mPa·s, and particularly preferably 90 to 400 mPa·s. When the viscosity is 70 mPa·s or more, it is possible to prevent excessive discharge when taking the diluted liquid from the container to the sponge. In addition, when kneading the sponge to foam, it is possible to prevent the diluted liquid from flowing out and increasing the amount used, and it can be used economically. When the viscosity is 500 mPa·s or less, the handleability when taking the diluted liquid from the container to the sponge can be made sufficient. The viscosity was measured by the method of the examples described below.

[0059] The high-concentration neutral liquid detergent composition of the present invention is not only suitably used for washing foods such as vegetables and fruits, but also in kitchens such as hotels, restaurants, eateries, school lunches, company cafeterias, workplaces in food processing factories, kitchens in ordinary households, etc. It can also be suitably used for washing hard surfaces by hand washing, particularly for washing tableware and cooking utensils. For washing, usually, a detergent aqueous solution obtained by diluting the undiluted solution 3000 to 10000 times in a sink or the like is prepared, and the object to be washed is immersed and hand washed, or the undiluted solution or a detergent aqueous solution obtained by diluting the undiluted solution 1 to 20 times is directly impregnated into a sponge or the like and hand washed. A method of spraying a detergent aqueous solution obtained by diluting the undiluted solution 8 to 20 times onto the object to be washed with a spray and then hand washing with a sponge or the like is used. Further, the high-concentration concentrated neutral liquid detergent composition of the present invention can also be suitably used for washing hard surfaces such as floors, walls, workbenches, shelves, etc. in the above-mentioned kitchens, workplaces, kitchens, etc., either as the undiluted solution or as a diluted solution diluted at an appropriate dilution ratio.

Examples

[0060] Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. The components of the high-concentration neutral liquid detergent composition used in the formulation of the high-concentration neutral liquid detergent compositions of the Examples and Comparative Examples are shown in Tables 1 to 11 below. The numerical values regarding the blending amounts shown in Tables 1 to 11 below represent the percentage (mass%) of the pure content of each component with respect to the high-concentration neutral liquid detergent composition, and the "balance" indicating the water content represents the blending amount adjusted so that the total amount of the high-concentration neutral liquid detergent composition as the final preparation becomes 100 mass%. Using the high-concentration neutral liquid detergent composition, each measurement and evaluation described later were carried out. The measurement results and evaluation results are also shown in Tables 1 to 11 together.

[0061] (Component (A)) A-1: Monoethanolamine linear alkylbenzene sulfonate (neutralized Teika Power L121, manufactured by Teika Co., Ltd.) A-2: Triethanolamine linear alkylbenzene sulfonate (neutralized Teika Power L121, manufactured by Teika Co., Ltd.) A-3: Potassium linear alkylbenzene sulfonate (neutralized Teika Power L121, manufactured by Teika Co., Ltd.)

[0062] (Component (B)) B-1: Coconut oil fatty acid diethanolamide (CDE80 - 300, manufactured by WOODLAND FOOD INDUSTIRIES Pte. Ltd.) B-2: Palm kernel oil fatty acid diethanolamide (KDE800 - 300, manufactured by WOODLAND FOOD INDUSTIRIES Pte. Ltd.)

[0063] (Component (C)) C-1: Monoethanolamine sulfate C-2: Ammonium chloride C-3: Ammonium sulfate C-4: Diammonium hydrogen citrate C-5: Monoethanolamine hydrochloride C-6: Sodium chloride

[0064] (Component (D)) D-1: Sodium α-olefin sulfonate (Clariant Japan Ltd., HOSTAPUR OS Liq) D-2: Sodium polyoxyethylene alkyl ether sulfate (Teika Co., Ltd., Teika Pole NE7030) D-3: Sodium alkane sulfonate (Clariant Japan Ltd., HOSTAPUR SAS 30 SB)

[0065] (Component (E)) E-1: Ion-exchanged water

[0066] (Component (F)) F-1: Lauramidopropyl betaine (InterMed Manufacturing Sdn.Bhd., IMEX LB 30) F-2: Lauryl dimethylaminoacetate betaine (InterMed Manufacturing Sdn.Bhd., IMEX DLB 35) F-3: Sodium laurylaminodipropionate (Lion Specialty Chemicals Co., Ltd., Energy Call DP-30) F-4: Potassium lauryl aspartate (Shin Nippon Rika Co., Ltd., NJ BON ASP-12KL) F-5: 2-Alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (Kawaken Fine Chemicals Co., Ltd., Softazolin CH)

[0067] (Component (G)) G-1: Propylene glycol (ADEKA Corporation, Industrial propylene glycol) G-2: Denatured ethanol (Yamaichi Chemical Industry Co., Ltd., Mixed ethanol NP) G-3: Diethylene glycol monobutyl ether (KH Neochem Co., Ltd., Buticenol 20) G-4: Polyethylene glycol (Sanyo Chemical Industries, Ltd., PEG-300) G-5: Urea

[0068] Other components H-1: Disodium Ethylenediaminetetraacetate H-2: Trisodium Methylglycinediacetate H-3: Tetrasodium Glutamatediacetate H-4: 2-Methyl-4-isothiazolin-3-one H-5: 5-Chloro-2-methyl-4-isothiazolin-3-one H-6: 1,2-Benzisothiazolin-3-one

[0069] Method for Measuring pH of High-Concentration Neutral Liquid Detergent Composition: <Calibration of pH Meter> Connect a combined electrode for pH measurement (manufactured by Horiba, Ltd.; Standard ToupH Electrode 9615S-10D) to a pH meter (manufactured by Horiba, Ltd.; pH / Ion Meter F-72), and turn on the power. As the internal solution of the pH electrode, an aqueous saturated potassium chloride solution (3.33 mol / L) was used. Next, fill 100 mL beakers with pH 4.01 standard solution (phthalate standard solution), pH 6.86 standard solution (neutral phosphate standard solution), and pH 9.18 standard solution (borate standard solution), respectively, and immerse them in a constant temperature bath at 25°C for 30 minutes. Immerse the pH measurement electrode in the temperature-adjusted standard solution for 3 minutes, and perform calibration operations in the order of pH 6.86, pH 9.18, and pH 4.01. <pH Measurement> Immerse the pH measurement electrode in 100 mL of the high-concentration neutral liquid detergent composition adjusted to a constant temperature of 25°C in a constant temperature bath for 3 minutes, and measure the pH.

[0070] ※1: Method for Measuring Viscosity (Stock Solution) <Test Method> Attach a rotor numbered 2 to a B-type viscometer (BLII type, manufactured by Toki Sangyo Co., Ltd.), and immerse the rotor in the high-concentration neutral liquid detergent composition (stock solution) adjusted to a constant temperature of 25°C in a constant temperature bath. Rotate the rotor at 30 rpm, and measure the viscosity 300 seconds after the start of rotation. <Evaluation Criteria> ◎: Viscosity is 90 mPa·s or more and 230 mPa·s or less ○: Viscosity is 80 mPa·s or more and less than 90 mPa·s Or, greater than 230 mPa·s and less than 250 mPa·s △: Viscosity is 70 mPa·s or more and less than 80 mPa·s Or, greater than 250 mPa·s and less than or equal to 300 mPa·s ×: Viscosity is less than 70 mPa·s or greater than 300 mPa·s And △, ○, and ◎ were determined to be practical

[0071] ※1: Method for measuring viscosity (6-fold diluted solution, 8-fold diluted solution) <Test method> Attach the rotor numbered 2 to a B-type viscometer (BLII type, manufactured by Toki Sangyo Co., Ltd.), and immerse the rotor in a high-concentration neutral liquid detergent composition (6-fold diluted solution, 8-fold diluted solution) adjusted to a constant temperature of 25°C in a constant temperature bath. Rotate the rotor at 30 rpm and measure the viscosity 300 seconds after the start of rotation <Evaluation criteria> ◎: Viscosity is 90 mPa·s or more and 400 mPa·s or less ○: Viscosity is 80 mPa·s or more and less than 90 mPa·s Or, greater than 400 mPa·s and less than 450 mPa·s △: Viscosity is 70 mPa·s or more and less than 80 mPa·s Or, greater than 450 mPa·s and less than or equal to 500 mPa·s ×: Viscosity is less than 70 mPa·s or greater than 500 mPa·s And △, ○, and ◎ were determined to be practical

[0072] ※2: Cleaning performance test <Test method> Apply 5 g of model soil (a mixture of 20 g of milk, 20 g of raw egg (egg yolk), 3 g of butter, and 3 g of flour, uniformly mixed while heating at 50 °C) to a 20-cm-diameter melamine plate, and dry it at room temperature to obtain the object to be washed. Take 1 g of the high-concentration neutral liquid detergent composition diluted 8 times in a dishwashing sponge (11.5×7.5×3.0 cm) containing hard water with a calcium carbonate equivalent of 50 mg / L [German hardness 2.5°DH], knead it by hand 10 times, then wash the object to be washed for 10 seconds and rinse it with running water for 15 seconds. Determine whether dirt remains by visual inspection and tactile sensation (nurutsuki). If it can be washed, perform the same process without adding more cleaning solution, and repeat until the object to be washed cannot be washed anymore. Evaluate the detergency based on the number of objects to be washed that can be cleaned. <Evaluation Criteria> ◎: 15 or more ○: 10 to 14 △: 5 to 9 ×: 4 or less And determine that △, ○, and ◎ are practical.

[0073] ※3: Foam Persistence Test <Test Method> Add 1 g of each high-concentration neutral liquid detergent composition diluted 8 times with hard water with a calcium carbonate equivalent of 50 mg / L [German hardness 2.5°DH] to a dishwashing sponge (11.5 cm×7.5 cm×3.0 cm) and include the above hard water, and knead it by hand 10 times to generate foam. Then, add 5 g of commercially available salad oil as dirt to the above dishwashing sponge, and evaluate the foam persistence (foam retention property) from the state of foaming when the operation of kneading and foaming is performed a total of 2 times. <Evaluation Criteria> ◎: Abundant foam is generated even after adding dirt ○: Foam is generated even after adding dirt △: Slightly foams even after adding dirt ×: Almost no foam is generated when adding dirt And determine that △, ○, and ◎ are practical.

[0074] ※4: Storage Stability Test (Stock Solution) <Test Method> 200 ml of the high-concentration neutral liquid detergent composition was placed in a 250-ml transparent polypropylene container, covered, and stored in a thermostat at 40 °C and allowed to stand. After 6 months, the appearance was observed and evaluated according to the following criteria. <Evaluation Criteria> ○: No precipitate or turbidity is observed and it is stable. △: Slight precipitate or turbidity is observed. ×: Precipitate or turbidity becomes significant and separation is observed. In the above evaluation, △ and ○ were determined to be practical.

[0075] ※4: Low-temperature stability test (undiluted solution) <Test Method> 200 ml of the high-concentration neutral liquid detergent composition was placed in a 250-ml transparent polypropylene container, covered, and stored in a thermostat at -5 °C and allowed to stand. After 1 month, the appearance was observed and evaluated according to the following criteria. <Evaluation Criteria> ○: No precipitate or turbidity is observed and it is stable. △: Slight precipitate or turbidity is observed. ×: Precipitate or turbidity becomes significant and separation is observed. In the above evaluation, △ and ○ were determined to be practical.

[0076] ※4: Low-temperature stability test (8-fold diluted solution) <Test Method> 200 ml of an 8-fold diluted solution of the high-concentration neutral liquid detergent composition was placed in a 250-ml transparent polypropylene container, covered, and stored in a thermostat at -5 °C and allowed to stand. After 1 month, the appearance was observed and evaluated according to the following criteria. <Evaluation Criteria> ○: No precipitate or turbidity is observed and it is stable. △: Slight precipitate or turbidity is observed. ×: Precipitate or turbidity becomes significant and separation is observed. In the above evaluation, △ and ○ were determined to be practical.

[0077] ※5: Antibacterial test <Test bacteria> As the test bacterium, Staphylococcus aureus (Staphyrococcus aureus NBRC12732) was used. The test bacterium was smeared on an SCD agar medium (manufactured by Eiken Chemical Co., Ltd.), cultured at 37°C for 24 hours, the colonies were scraped off, smeared on a new SCD agar medium (manufactured by Eiken Chemical Co., Ltd.), and then cultured at 37°C for 24 hours. The colonies were scraped off and diluted in physiological saline, and the resulting diluted solution was used as the bacterial suspension. <Test method> The bacterial suspension was adjusted in a 0.3 mass% nutrient medium (manufactured by Eiken Chemical Co., Ltd.) and 3°DH hard water to a final concentration of 7.0×10 7 ~7.0×10 8 CFU / mL to obtain the test bacterial solution. Next, a tableware sponge processed into a cylindrical shape with a diameter of 2.4 cm and a height of 3 cm was placed in a screw-cap bottle with a volume of 110 ml. 0.5 ml of the above test bacterial solution was added thereto to inoculate the tableware sponge, and the test bacterial solution was uniformly kneaded into the tableware sponge using a sterilized glass rod. After the screw-cap bottle was sealed, it was left at 25±1°C for 1 hour to allow the test bacterial solution to adhere to the tableware sponge. After leaving it, the screw-cap bottle was opened, 0.5 ml of an 8-fold diluted high-concentration neutral liquid detergent composition or a 0.05 (W / V)% polysorbate 80 (manufactured by Tokyo Chemical Industry Co., Ltd., trade name "Tween 80") aqueous solution as a control detergent was added to inoculate the tableware sponge, and the high-concentration neutral liquid detergent composition or the control detergent was uniformly kneaded into the tableware sponge using a new sterilized glass rod. Then, the screw-cap bottle was sealed again and left at 25±1°C for 18 hours. After leaving it, the screw-cap bottle was opened, 20 ml of an SCDLP medium (manufactured by Eiken Chemical Co., Ltd.) was added to the screw-cap bottle to inoculate the tableware sponge, and the SCDLP medium (manufactured by Eiken Chemical Co., Ltd.) was uniformly kneaded into the tableware sponge using a new sterilized glass rod. A 10-fold dilution series was prepared using the liquid extracted from this tableware sponge, mixed and plated on an SCD agar medium, and cultured at 37°C for 48 hours. After culturing, the viable cell count was measured, and the value obtained by subtracting the logarithm value of the number of bacteria (AV2) when using the high-concentration neutral liquid detergent composition from the logarithm value of the number of bacteria (AV1) when using the control detergent was defined as the antibacterial activity value [Equation 1], and the antibacterial property was evaluated according to the following evaluation criteria. [Equation 1] Antibacterial activity value = AV1 - AV2 AV1: Common logarithm of the viable cell count of the test piece treated with the control sample. AV2: Common logarithm of the viable cell count of the test piece treated with the highly concentrated neutral liquid detergent composition diluted 8-fold. <Evaluation method> ◎: Bactericidal activity value is 4 or more ○: Bactericidal activity value is 3 or more and less than 4 △: Bactericidal activity value is 2 or more and less than 3 ×: Bactericidal activity value is less than 2

[0078]

Table 1

[0079]

Table 2

[0080]

Table 3

[0081]

Table 4

[0082]

Table 5

[0083]

Table 6

[0084]

Table 7

[0085]

Table 8

[0086]

Table 9

[0087]

Table 10

[0088]

Table 11

Claims

1. As component (A), linear alkylbenzene sulfonic acid and / or its salt, as component (B), fatty acid alkanolamide, as component (C), at least one selected from ammonium hydrogen carbonate, ammonium acetate, diammonium hydrogen citrate, triammonium citrate, monoethanolamine hydrochloride, monoethanolamine sulfate, monoethanolamine acetate, monoethanolamine citrate, diethanolamine hydrochloride, diethanolamine sulfate, diethanolamine acetate, diethanolamine citrate, triethanolamine hydrochloride, triethanolamine sulfate, triethanolamine acetate, triethanolamine citrate, as component (D), an anionic surfactant other than (A), and as component (E), water, A high-concentration neutral liquid detergent composition, characterized in that the total amount of component (A) and component (B) is 20% by mass or more and 55% by mass or less.

2. The high-concentration neutral liquid detergent composition according to Claim 1, wherein the value of the mass ratio (D) / (A) of the mass of component (D) to the mass of component (A) is 0.0020 or more and 0.70 or less.

3. The high-concentration neutral liquid detergent composition according to Claim 1 or 2, characterized in that it contains at least one selected from α-olefin sulfonate, polyoxyethylene alkyl ether sulfate ester salt, and alkane sulfonate as component (D).

4. The high-concentration neutral liquid detergent composition according to Claim 1 or 2, characterized in that it contains at least one selected from carboxylic acid type amphoteric surfactants as component (F).

5. The high-concentration neutral liquid detergent composition according to Claim 4, wherein the value of the mass ratio (F) / ((A)+(B)) of the mass of component (F) to the total amount of component (A) and component (B) is 0.0030 or more and 0.50 or less.

6. The high-concentration neutral liquid detergent composition according to Claim 1 or 2, characterized in that it contains at least one selected from alcohol solvents, glycol solvents, and urea as component (G).

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