JP2014181304A - High concentration neutral liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high concentration neutral liquid detergent composition excellent in washability and foam durability, good in low temperature stability or low temperature fluidity of a raw liquid containing a surfactant of 40 mass% or more and less than 60 mass%, having preferable viscosity and performance even when used with the surfactant concentration of less than 10 mass% by diluting the raw material with water, and having no inflammability.SOLUTION: The high concentration neutral liquid detergent composition contains 10 pts.mass of a linear alkylbenzene sulfonic acid monoethanolamine salt (A), 2 to 8 pts.mass of fatty acid alkanolamide (B), 0.2 to 1 pts.mass of ethanol (C), 0.2 to 7 pts.mass of propylene glycol and/or polyethylene glycol (D), 0.02 to 0.7 pts.mass of sodium chloride (E) and 0.2 to 19 pts.mass of water (F), and the total content of the (A) component and the (B) component is 40 mass% or more and less than 60 mass% of total.

Description

  The present invention relates to a high-concentration neutral liquid detergent composition. More specifically, the present invention is excellent in detergency and foam persistence, contains less than 40 to 60% by mass of a surfactant, and is diluted with water to obtain a surfactant. A safe high-concentration neutral liquid detergent composition that has moderate viscosity and performance even when used at a concentration of less than 10% by mass, has good low-temperature stability and low-temperature fluidity of the stock solution, and has no flammability It provides things.

  In recent years, the importance of development and sales of products that are friendly to the global environment has increased, and products that are friendly to the global environment are also demanded in the field of detergents. Under such circumstances, since the reduction of energy and the amount of waste in logistics are expected, miniaturization of containers for storing the cleaning composition is progressing. For this reason, various concentrated detergents have been developed in which a high concentration of surfactant is blended and prepared to have an appropriate viscosity when diluted during use.

  Conventionally, as a high-concentration detergent containing a high-concentration surfactant, Patent Document 1 includes a total of anionic surfactants, fatty acid alkanolamides, polyoxyethylene alkyl ethers of linear higher alcohols, amphoteric surfactants, and the like. A high-concentration neutral liquid detergent composition is disclosed that contains 60 to 95% by weight and contains a viscosity reducing agent so that it has an appropriate viscosity even when diluted with water, and the amount of amphoteric surfactant is adjusted. ing. Patent Document 2 discloses a high-concentration liquid detergent for tableware in which the total amount of linear alkylbenzene sulfonate and nonionic surfactant is 40% by weight or more and 70% by weight or less, and the composition is prepared so as to be diluted with water. Is described. Patent Document 3 contains a total of 50 to 75% by weight of linear alkylbenzene sulfonic acid soda and fatty acid alkanolamide, and a high concentration in which a viscosity reducing agent and a viscosity modifier are blended so as to have an appropriate viscosity when diluted. Liquid detergent compositions are described. Patent Document 4 contains 50 to 75% by weight of a total of potassium linear alkylbenzene sulfonate and fatty acid alkanolamide, and a viscosity reducing agent such as ethanol and a viscosity adjusting agent such as sodium chloride. High-concentration neutral liquid detergent compositions are sometimes described that are sometimes moderately viscous.

JP-A-6-240292 JP-A-10-219282 Japanese Patent Laid-Open No. 8-3587 JP 7-316589 A

Since the liquid detergent composition of Patent Document 1 contains a surfactant having a high concentration of 60 to 95% by weight, it has been described in Patent Document 2 in recent years due to the increasing awareness of the “environment and cost” of companies. Such high-concentration liquid detergents having a reduced surfactant concentration have become mainstream, but the high-concentration liquid detergent described in Patent Document 2 has sufficient performance such as detergency, foaming, and viscosity at dilution. It was hard to say. On the other hand, the linear alkylbenzene sulfonic acid soda blended in the high-concentration liquid detergent composition described in Patent Document 3 is excellent in detergency and cost, but it is difficult to dissolve in water at low temperatures. There was a tendency for the low temperature fluidity to deteriorate and there was a problem in workability. In order to solve such a problem, the cleaning composition described in Patent Document 4 contains a large amount of a low-boiling solvent such as ethanol, but it has flammability and odor, which is in terms of safety. There was a problem.
The present invention has been made in order to solve the above-described problems of the prior art. The object of the present invention is excellent in detergency and foam persistence, the surfactant is contained in an amount of less than 40 to 60% by mass, and the interface is formed with water. Even if diluted so that the concentration of the activator is less than 10% by mass, it has an appropriate viscosity and performance, and the low-temperature stability and low-temperature fluidity of the stock solution is good, and it is safe without flammability. The object is to provide a high concentration neutral liquid detergent composition.

  In order to solve the above-mentioned problems, the present inventors have intensively studied. As a result, 2 to 8 parts by mass of the fatty acid alkanolamide (B) with respect to 10 parts by mass of the linear alkylbenzenesulfonic acid monoethanolamine salt (A), 0.2 to 1 part by mass of ethanol (C), 0.2 to 7 parts by mass of propylene glycol and / or polyethylene glycol (D), 0.02 to 0.7 parts by mass of sodium chloride (E), water ( F) is contained in an amount of 0.2 to 19 parts by mass, and the total content of the component (A) and the component (B) is 40% by mass or more and less than 60% by mass. Liquid detergent composition has excellent detergency and foam persistence, has an appropriate viscosity and performance even when diluted with water so that the surfactant concentration is less than 10% by mass, and Low temperature stability and low temperature fluidity of the stock solution It has become possible to provide a safe high-concentration neutral liquid detergent composition that does not have the property, and has completed the present invention.

That is, the present invention
(1) 2-8 parts by mass of fatty acid alkanolamide (B), 0.2-1 part by mass of ethanol (C), propylene glycol with respect to 10 parts by mass of linear alkylbenzenesulfonic acid monoethanolamine salt (A) And / or 0.2 to 7 parts by mass of polyethylene glycol (D), 0.02 to 0.7 parts by mass of sodium chloride (E), and 0.2 to 19 parts by mass of water (F) (A High concentration neutral liquid detergent composition, wherein the total content of the component (B) and the component (B) is 40% by mass or more and less than 60% by mass,
(2) Furthermore, 0.02 of at least one compound (G) selected from the group consisting of an aromatic sulfonic acid or a salt thereof, an aromatic carboxylic acid or a salt thereof with respect to 10 parts by mass of the component (A). The high-concentration neutral liquid detergent composition according to the above (1), which contains ˜4 parts by mass,
(3) The above (1) or (1), wherein the mass ratio of the component (A) and the component (B) is a ratio of (A) / (B) = 3/2 to 7/2 (mass ratio) The high-concentration neutral liquid detergent composition according to (2),
(4) The high-concentration neutral liquid detergent composition as described in (1) to (4) above, which is used for vegetables / fruits, tableware / cooking utensils,
Is a summary.

  The high-concentration neutral liquid detergent composition of the present invention has a surfactant ratio of 40 to less than 60% by mass and contains the surfactant in a high concentration. Good fluidity, even when diluted with water so that the surfactant concentration is less than 10% by weight, it has suitable viscosity and performance, and has excellent detergency and foam sustainability, and flammability It has the effect that there is no safety and high safety.

  The high-concentration neutral liquid detergent composition of the present invention comprises fatty acid alkanolamide (B) in an amount of 2 to 8 parts by mass, ethanol (C) with respect to 10 parts by mass of a linear alkylbenzenesulfonic acid monoethanolamine salt (A). 0.2 to 1 part by mass, propylene glycol and / or polyethylene glycol (D) 0.2 to 7 parts by mass, sodium chloride (E) 0.02 to 0.7 parts by mass, and water (F) 0 .2 to 19 parts by mass. When the component (B) is less than 2 parts by mass relative to 10 parts by mass of the component (A), it is not preferable in terms of detergency, foam persistence, and thickening effect of the diluted solution. It is not preferable in terms. Further, when the component (C) is less than 0.2 parts by mass, it is not preferable from the viewpoint of low-temperature stability, and when it exceeds 1 part by mass, it is not preferable from the viewpoint of flammability and solvent odor. When the component (D) is less than 0.2 parts by mass, the low temperature stability is not preferable, and even if it exceeds 7 parts by mass, the further improvement effect is saturated and is not economically preferable. Further, when the component (E) is less than 0.02 parts by mass, it is not preferable from the viewpoint of the thickening effect of the diluent, and when it exceeds 0.7 parts by mass, it is not preferable from the viewpoint of low temperature stability. In this invention, it is preferable to contain 2.8-6.7 mass parts of (B) component with respect to 10 mass parts of said (A) component, and it is more preferable to contain 3-6 mass parts. Moreover, it is preferable to contain 0.25-0.7 mass part of (C) component with respect to 10 mass parts of said (A) component from the point of low-temperature stability, 0.4-0.6 mass part containing More preferably. It is preferable to contain 1-6 mass parts of (D) component with respect to 10 mass parts of said (A) component, and it is more preferable to contain 2-5 mass parts. Furthermore, it is preferable to contain 0.03-0.6 mass part of (E) component with respect to 10 mass parts of said (A) component from the point of the thickening effect of a diluent, 0.1-0.4 It is more preferable to make it contain by mass part. It is preferable to contain 5-17.5 mass parts of (F) component with respect to 10 mass parts of said (A) component, and it is more preferable to contain 6-15 mass parts.

  As the linear alkylbenzene sulfonic acid monoethanolamine salt which is the component (A), an alkyl group having 12 to 14 carbon atoms is preferable. The fatty acid alkanolamide as component (B) is, for example, palm kernel oil fatty acid monoethanolamide, coconut oil fatty acid monoethanolamide (1: 1 type), lauric acid monoethanolamide, myristic acid monoethanolamide, stearic acid monoethanol. Amide, isostearic acid monoethanolamide, oleic acid monoethanolamide, coconut oil fatty acid monoethanolamide (1: 2 type), palm kernel fatty acid diethanolamide, coconut oil fatty acid diethanolamide (1: 1 type), lauric acid diethanolamide , Myristic acid diethanolamide, stearic acid diethanolamide, isostearic acid diethanolamide, oleic acid diethanolamide, coconut oil fatty acid diethanolamide (type 1: 2), or alkyls on these alkyl groups Such as those down-oxide are added and the like. You may use these 1 type or in combination of 2 or more types. Among the above fatty acid alkanolamides, coconut oil fatty acid diethanolamide (1: 1 type) is preferably used from the viewpoint of foaming.

  The polyethylene glycol in the component (D) is represented by the following formula (1).

(Chemical formula 1)
_{H- (OC 2 H 4) m} -OH (1)
(In the formula, m represents a number of 3 to 1000.)

  Polyethylene glycol having a molecular weight of 3 to 1000 in the formula (1) can be used, but from the viewpoint of low temperature stability, m of 3 to 500 is preferable. 100 is more preferable, 3 to 50 is more preferable, and 3 to 10 is most preferable. When the value of m is smaller than 3, it is not preferable from the viewpoint of low-temperature stability, and when the value of m is larger than 1000, it is not preferable from the viewpoint of viscosity or storage stability when diluted with water. The propylene glycol and polyethylene glycol as component (D) can be used alone or in combination of two or more. Propylene glycol is most preferred from the viewpoint of low temperature stability and thickening effect of the diluent.

  Ratio of the total of component (A) and component (B) in the high-concentration neutral liquid detergent composition of the present invention (component (A) and component (B) relative to the total amount of components (A) to (F)) Is 40% by mass or more and less than 60% by mass. When the total amount of the component (A) and the component (B) is less than 40% by mass of the whole, the cleaning property and the foam persistence are not preferable, and when it is 60% by mass or more, the low temperature stability is decreased. Therefore, it is not preferable. Moreover, it is preferable to mix | blend (A) component and (B) component by (A) / (B) = 3 / 2-7 / 2 (mass ratio), (A) / (B) = 1.9. It is more preferable to mix | blend with / 1-3 / 1 (mass ratio). When (A) component and (B) component are mix | blended by (A) / (B) = 3/2-7/2 (mass ratio), a thickening effect, a cleaning effect, and a foam-sustaining effect will increase with a synergistic effect. However, if the component (B) is too small relative to the component (A), the viscosity of the stock solution may increase and the low-temperature stability may decrease, and if the component (B) is too large relative to the component (A), There is a possibility that the cleaning property and the bubble persistence are lowered.

  In the present invention, at least one selected from the group consisting of an aromatic sulfonic acid or a salt thereof, an aromatic carboxylic acid or a salt thereof as the component (G) for the purpose of improving the thickening effect of the diluent and low-temperature stability. Can be blended. Various aromatic sulfonic acids or their salts can be used as the aromatic sulfonic acid or its salts. As the aromatic sulfonic acid or a salt thereof, xylene sulfonic acid, toluene sulfonic acid, cumene sulfonic acid, benzene sulfonic acid, substituted or unsubstituted naphthalene sulfonic acid or a salt thereof is preferable, but is not limited thereto. Moreover, as aromatic carboxylic acid and its salt, although benzoic acid, salicylic acid, these salts, etc. are preferable, it is not limited to these. Examples of the salt of aromatic sulfonic acid and the salt of aromatic carboxylic acid include sodium salt, potassium salt, calcium salt, magnesium salt, ammonium salt and alkanolamine salt. These aromatic sulfonic acids and salts thereof, aromatic carboxylic acids and salts thereof may be used singly or in combination of two or more, but in particular, from the viewpoint of low temperature stability and the thickening effect of the diluent. , Sodium paratoluenesulfonate and sodium cumenesulfonate are preferable.

  The blending amount of at least one compound selected from the group consisting of aromatic sulfonic acid or salt thereof, aromatic carboxylic acid or salt thereof as component (G) is based on 10 parts by mass of component (A) above. Although 0.02-4 mass parts is preferable, From the point of the thickening effect of a dilution liquid, More preferably, it is 0.06-2 mass parts, More preferably, it is 0.1-1 mass part. If the amount is less than 0.02 parts by mass, the effect of increasing the viscosity of the diluent and the effect of improving the low temperature stability are not sufficient, and even if the amount exceeds 4 parts by weight, the further improvement effect is saturated and economically It is not preferable.

  The high-concentration neutral liquid detergent composition of the present invention is a component that is usually used in the technical field according to the formulation form of the high-concentration neutral liquid detergent composition within a range that does not impair the effects of the present invention. You may contain. Examples of such components include bactericides, metal corrosion inhibitors, chelating agents, pH adjusters, thickeners, fragrances, and pigments.

  Examples of the bactericides include thiazolines, hydantoins, iodo-2-propynylbutyl carbamate, isopropylmethylphenol, hexachlorophene, irgasan, triclosan and the like. Thiazolines include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, isothiazoline-3-one, 1,2-benzisothiazolin-3-one, Nn-butyl-benzisothiazolin-3-one and the like. Hydantoins include 1,3-dimethylol-5,5-dimethylhydantoin, 1 or 3-monomethylol-5,5-dimethylhydantoin, dimethylhydantoin, 1,3-dichloro-5,5-dimethylhydantoin, 1, Examples include 3-dichloroethylmethylhydantoin. Among these bactericides, 1,2-benzisothiazolin-3-one and isopropylmethylphenol are more preferable. These may be used alone or in combination of two or more.

  Examples of metal corrosion inhibitors include polycarboxylic acids such as short-chain dicarboxylic acids and tricarboxylic acids, phosphate esters, triazoles such as benzotriazole, tolyltriazole and mercaptobenzothiazole, 1-hydroxyethylidene-1,1-diphosphonic acid, etc. Such as phosphonic acid, adipic acid, glutaric acid, and succinic acid.

  Chelating agents include ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), hydroxyethylenediaminetriacetic acid (HEDTA), diethylenetriaminopentaacetic acid (DTPA), triethylenetetraaminehexaacetic acid (TTHA), hydroxyethyliminodiacetic acid. (HIDA), dihydroxyethyl glycine (DHEG), methyl glycine diacetate (MGDA), glutamate diacetate (GLDA), aspartate diacetate (ASDA), β-alanine diacetate (ADA), serine diacetate (SDA), Amino acids such as glycine, alanine, glutamic acid, aspartic acid, glucolic acid, lactic acid, citric acid, gluconic acid, tartaric acid, malic acid and their alkali metal salts, ammonium salts, monoethanolamine, triethanolamine, monoiso Alkanolamine salts such as Ropanoruamin like.

  The pH of the highly concentrated neutral liquid detergent composition of the present invention is 6 to 8 at 25 ° C. If the pH is less than 6, it is not preferable because the low-temperature stability of the stock solution becomes insufficient, and if the pH exceeds 8, it is not preferable in terms of rough hands. As a pH adjuster, when the pH at 25 ° C. is less than 6, for example, sodium hydroxide, potassium hydroxide, sodium acetate, sodium carbonate, sodium citrate, sodium hydrogen citrate, sodium phosphate, sodium hydrogen phosphate, When alkanolamine or the like is used and the pH exceeds 8, acetic acid, hydrochloric acid, sulfuric acid, nitric acid, citric acid, phosphoric acid or the like is used. In addition, the said pH is measured by the method of the below-mentioned Example.

  The viscosity of the high-concentration neutral liquid detergent composition of the present invention is preferably 70 to 300 mPa · s, more preferably 80 to 250 mPa · s when the temperature of the detergent composition is 25 ° C. 100 to 220 mPa · s is most preferable. When the viscosity is less than 70 mPa · s, it is excessively used and cannot be economically used. When the viscosity exceeds 300 mPa · s, it takes a long time to dissolve in water and the handling property is deteriorated. Examples of the thickening agent blended as necessary to adjust the viscosity include glycerin, sorbitol, ethylene glycol, hexylene glycol, polypropylene glycol, xylitol, maltitol, and lactol. In addition, a viscosity is measured by the method of the below-mentioned Example.

  Examples of the fragrance blended in the high-concentration neutral liquid detergent composition of the present invention as necessary include natural fragrances, synthetic fragrances, and these blended fragrances. Examples of the pigment include natural pigments, Synthetic pigments, and mixtures thereof.

  The high-concentration neutral liquid detergent composition of the present invention can be used for, for example, washing food such as vegetables and fruits, hotels and restaurants, restaurants, school lunches, kitchens for employee cafeterias, workplaces of food processing factories, and general households. In a kitchen or the like, it can be suitably used for washing hard surfaces by hand washing, particularly for dishes and cooking utensils. Washing is usually performed by preparing a detergent aqueous solution in which the stock solution is diluted 3000 to 10,000 times in a sink or the like, and immersing the object to be washed and washing it manually or by diluting the stock solution or the stock solution 6 to 20 times. Use a method of hand-washing with a sponge. Further, the high-concentration neutral liquid detergent composition of the present invention can be used as a stock solution or as a diluted solution diluted at an appropriate dilution rate, in the above-described kitchen, work place, kitchen, floor, wall, work table, shelf, etc. It can also be suitably used for cleaning hard surfaces such as the above.

  Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples. Each component used for blending in Examples and Comparative Examples is shown below.

(A) component A-1: linear dodecylbenzenesulfonic acid monoethanolamine salt

Component (A) Comparative component [hereinafter referred to as “(A ′) component”] ]
A′-1: linear dodecylbenzenesulfonic acid sodium salt A′-2: linear dodecylbenzenesulfonic acid potassium salt A′-3: linear dodecylbenzenesulfonic acid diethanolamine salt A′-4: linear dodecylbenzenesulfonic acid Triethanolamine salt

(B) Component B-1: Palm oil fatty acid diethanolamide (1: 1 type)
B-2: Palm kernel oil fatty acid diethanolamide

Component (B) Comparative component [hereinafter referred to as “component (B ′)”. ]
B′-1: Adduct of lauryl alcohol EO 15 mol PO5 mol (random copolymer)
(EO: ethylene oxide, PO: propylene oxide)

(C) Component C-1: Ethanol

(D) Component D-1: Propylene glycol D-2: Polyethylene glycol (weight average molecular weight 200). M = 4.1 in the general formula (1)

(E) Component E-1: Sodium chloride

Component (E) Comparative component [hereinafter referred to as “(E ′) component”]. ]
E′-1: Sodium sulfate

(F) Component F-1: Sodium paratoluenesulfonate F-2: Sodium cumenesulfonate

Examples 1-12, Comparative Examples 1-14
Based on the formulations shown in Tables 1 to 3, high-concentration neutral liquid detergent compositions were prepared. However, Examples 1 to 12, Comparative Examples 1 to 9 and Comparative Examples 11 to 14 are neutral, but the liquid detergent composition of Comparative Example 10 is not neutral (hereinafter, these are simply referred to as “high concentration cleaning”. Agent composition ”). The results of measuring the pH of each high-concentration detergent composition, the viscosity of the undiluted solution, the viscosity of the 6-fold diluted solution, the detergency, foam persistence, low-temperature stability, and flammability are shown in Tables 1 to 3 below. Show. In addition, the numerical value of the Example in a table | surface and a comparative example represents the mass part of a pure part.

* 1: Measuring method of pH Connect a pH measuring composite electrode (made by HORIBA; glass sliding sleeve type) to a pH meter (made by HORIBA; pH / ion meter F-23) and turn on the power. A saturated potassium chloride aqueous solution (3.33 mol / L) was used as the pH electrode internal solution.
Next, pH 4.01 standard solution (phthalate standard solution), pH 6.86 (neutral phosphate standard solution), and pH 9.18 standard solution (borate standard solution) were each filled in a 100 ml beaker. It was immersed in a constant temperature bath at 30 ° C. for 30 minutes. The pH measurement electrode was immersed in a standard solution adjusted to a constant temperature for 3 minutes, and calibration was performed in the order of pH 6.86 → pH 9.18 → pH 4.01.
A sample (high concentration detergent composition) was filled in a 100 ml beaker and adjusted to 25 ° C. in a thermostatic bath at 25 ° C. The pH measurement electrode was immersed in a sample adjusted to a constant temperature for 3 minutes, and the pH was measured.

* 2: Viscosity (stock solution, 6-fold diluted solution) measurement method Viscosity was measured using a B-type viscometer (BM type, manufactured by Tokyo Keiki Co., Ltd.) at 25 ° C. 2 is used and rotated at a rotation speed of 30 rpm, and the viscosity after 300 seconds from the start of rotation is taken as the measured value.

* 3: Detergency test method:
5 g of a commercially available margarine was applied to a melamine dish having a diameter of 20 cm and dried at room temperature to obtain an object to be washed. Take 1g of a 6-fold diluted high-concentration detergent composition in a dishwashing sponge (11.5 x 7.5 x 3.0cm) soaked in tap water, rub it by hand 10 times, and then wash Was washed for 10 seconds and rinsed with running water for 15 seconds. Whether or not dirt remains was visually and tactilely sensed (null feel), and when it was washed, the same process was performed without adding a washing solution, and the washing was repeated until the washing object could not be washed. Detergency was evaluated by the number of objects to be cleaned.
Detergency evaluation criteria:
◎: 15 or more ◯: 10 to 14 △: 5 to 9 ××: 4 or less, and Δ, ○, ◎ were judged as practical.

* 4: Foam durability test method:
Into a dishwashing sponge (11.5 × 7.5 × 3.0 cm) containing tap water, 1 g of the 6-fold diluted high-concentration detergent composition was taken and bubbled by hand 10 times. Thereafter, 5 g of a commercially available salad oil was added as dirt, and the foam persistence was evaluated from the state of foaming when the foam was further boiled 10 times.
Foam durability evaluation criteria:
◎: Abundant bubbles still appear after the addition of dirt ○: Bubbles still appear after the addition of dirt , ○, and ◎ were judged as practical.

* 5: Flammability test method:
According to JIS K 2265, the flash point of the high-concentration detergent composition was measured up to a measurement temperature of 80 ° C. using the tag sealing method, and when the flash point was not confirmed, the Cleveland open method was used.
Flammability evaluation criteria:
○: No flash point ×: Flash point

* 6: Low temperature stability test method Test method:
100 g of the high-concentration detergent composition was put in a transparent glass bottle and allowed to stand at −5 ° C. for 1 month, and then the appearance was observed.
Stability evaluation criteria:
○: No separation or turbidity is observed and stable △: No overall separation, but some turbidity is observed ×: Separation or turbidity is observed
And Δ and ○ were determined to be practical.

Claims (4)

For 10 parts by mass of the linear alkylbenzenesulfonic acid monoethanolamine salt (A),
2-8 parts by weight of fatty acid alkanolamide (B),
0.2-1 part by mass of ethanol (C),
0.2-7 parts by mass of propylene glycol and / or polyethylene glycol (D),
0.02 to 0.7 parts by mass of sodium chloride (E),
0.2-19 parts by mass of water (F),
A high-concentration neutral liquid detergent composition comprising a total content of the component (A) and the component (B) of 40% by mass or more and less than 60% by mass.   Furthermore, at least one compound (G) selected from the group consisting of an aromatic sulfonic acid or a salt thereof, an aromatic carboxylic acid or a salt thereof with respect to 10 parts by mass of the linear alkylbenzenesulfonic acid monoethanolamine salt (A) The high-concentration neutral liquid detergent composition according to claim 1, comprising 0.02 to 4 parts by mass of the composition.   3. The high concentration according to claim 1, comprising the component (A) and the component (B) at a ratio of (A) / (B) = 3/2 to 7/2 (mass ratio). Neutral liquid detergent composition.   The high-concentration neutral liquid detergent composition according to any one of claims 1 to 3, which is used for washing vegetables / fruits, tableware / cooking utensils.