Concentrated neutral liquid detergent composition

Abstract

To provide an excellent concentrated neutral liquid detergent composition which is excellent in a detergent property, a foaming property, and a hand roughness prevention property although having reduced LAS and a reduced surfactant amount and which can maintain viscosity even when diluted with water 6-fold or more.SOLUTION: A concentrated neutral liquid detergent composition contains: an anion surfactant as a component (A); a fatty acid alkanolamide as a component (B); an ampholytic surfactant as a component (C); alkyl polyglucoside as a component (D); and water as a component (E). The component (A) contains alpha olefin sulfonate. The total amount of the component (A), the component (B), the component (C), and the component (D) is 20 mass% or more and 50 mass% or less. The proportion of the alpha olefin sulfonate in the component (A) is 20 mass% or more and 100 mass% or less based on the amount of the component (A) as a whole.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a concentrated neutral liquid detergent composition, and more particularly, to a concentrated neutral liquid detergent composition that is excellent in detergency and foam persistence, has appropriate viscosity and performance even when diluted with water, has good low-temperature stability of the undiluted solution, and causes little irritation to the skin.

Background Art

[0002] In recent years, the importance of developing and selling products friendly to the global environment has been increasing, and in the detergent field as well, products that consider the global environment are in demand. Under such circumstances, since energy reduction and waste reduction in logistics are expected, the containers for accommodating detergent compositions are being downsized. Therefore, various concentrated detergents have been developed in which surfactants are blended at a high concentration and are prepared to have appropriate viscosity when diluted during use.

[0003] Conventionally, as a high-concentration detergent containing a high-concentration surfactant, Patent Document 1 describes a high-concentration liquid detergent composition containing a total of 50 to 75% by weight of sodium linear alkylbenzene sulfonate and fatty acid alkanolamide, and blended with a viscosity reducer and a viscosity modifier so as to have appropriate viscosity when diluted. Patent Document 2 discloses a high-concentration neutral liquid detergent composition containing a total of 60 to 95% by weight of an anionic surfactant, a fatty acid alkanolamide, a polyoxyethylene alkyl ether of a linear higher alcohol, an amphoteric surfactant, etc., blended with a viscosity reducer so as to have appropriate viscosity even when diluted with water, and adjusting the amount of the amphoteric surfactant. Patent Document 3 proposes a liquid detergent composition combining a non-soap anionic surfactant, an amphoteric surfactant, a nonionic surfactant having an HLB of 6 to 18, and a higher alcohol as a micelle growth promoter.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] However, sodium linear alkylbenzene sulfonate (hereinafter abbreviated as LAS) incorporated in the high-concentration liquid detergent composition of Patent Document 1 is excellent in detergency and cost. In recent years, however, from the viewpoint of water quality conservation related to the conservation of aquatic organisms, the use of LAS has been avoided. In addition, since it has a strong degreasing power and causes rough hands, there is a need for a detergent to replace LAS. The high-concentration liquid detergent composition of Patent Document 2 had a large amount of surfactant incorporated and was not sufficient in terms of detergency. Although the liquid detergent composition of Patent Document 3 has been shown to be excellent in detergency and low-temperature stability, the foam quality and viscosity upon dilution are not described.

[0006] Therefore, an object of the present invention is to provide an excellent concentrated neutral liquid detergent composition that reduces LAS and reduces the amount of surfactant, specifically containing 20% by mass or more and 50% by mass or less of the surfactant, being excellent in detergency, foaming property, and prevention of rough hands, and maintaining viscosity even in dilution 6 times or more with water. [Means for Solving the Problems]

[0007] In order to solve the above problems, as a result of intensive studies by the present inventors, a concentrated neutral liquid detergent composition containing, as component (A), an anionic surfactant, as component (B), a fatty acid alkanolamide, as component (C), an amphoteric surfactant, as component (D), an alkyl polyglucoside, and as component (E), water, wherein the total amount of component (A), component (B), component (C), and component (D) is 20% by mass or more and 50% by mass or less, and the proportion of alpha olefin sulfonate in component (A) is 20% by mass or more and 100% by mass or less based on the total amount of component (A), has been found to be able to solve the problems of conventional products, and thus the present invention has been completed.

[0008] That is, the present invention provides: (1) A concentrated neutral liquid detergent composition containing, as component (A), an anionic surfactant, as component (B), a fatty acid alkanolamide, as component (C), an amphoteric surfactant, as component (D), an alkyl polyglucoside, and as component (E), water, wherein component (A) contains alpha olefin sulfonate, the total amount of component (A), component (B), component (C), and component (D) is 20% by mass or more and 50% by mass or less, and the proportion of alpha olefin sulfonate in component (A) is 20% by mass or more and 100% by mass or less based on the total amount of component (A). (2) The concentrated neutral liquid detergent composition according to (1), wherein the proportion of alpha olefin sulfonate in component (A) is 50% by mass or more and 100% by mass or less based on the total amount of component (A). (3) The concentrated neutral liquid detergent composition according to (1) or (2), wherein component (C) is a betaine-type amphoteric surfactant. (4) The concentrated neutral liquid detergent composition according to (1) or (2), further containing, as component (F), an alkali metal salt. (4) The concentrated neutral liquid detergent composition according to (1) or (2), further containing, as component (G), a water-soluble solvent. (5) The concentrated neutral liquid detergent composition according to (1) or (2), wherein the value of the mass ratio (A) / (C) of component (A) to component (C) is 0.1 or more and 5 or less. (6) The value of the mass ratio (A) / [(B)+(C)] of the component (A), the component (B), and the component (C) is 0.8 or more and 4 or less, and the concentrated neutral liquid detergent composition according to (1) or (2). (7) The concentrated neutral liquid detergent composition according to (1) or (2), which is used for washing non-washable objects selected from the group consisting of vegetables, fruits, tableware, and cooking utensils.

Effects of the Invention

[0009] The concentrated neutral liquid detergent composition of the present invention has excellent effects such as detergency, foaming property, prevention of rough hands, and maintainable viscosity even when diluted with water.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0011] The present invention is a concentrated neutral liquid detergent composition containing the above components (A) to (E) as essential components. The concentrated neutral liquid detergent composition of the present invention contains an anionic surfactant as the component (A). This component (A) mainly contributes to detergency, foaming property, and foam persistence.

[0012] (A) component contains alpha olefin sulfonate, but other optional anionic surfactants with detergency, foaming property, and foam persistence can be used. For example, as anionic surfactants, there are 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, alkylbenzene sulfonic acids, olefin sulfonic acids (excluding alpha olefin sulfonates), alkane sulfonic acids, alkyl diphenyl ether disulfonic acids, dialkyl sulfosuccinic acids, polyoxyalkylene alkyl ether sulfosuccinic acid semi-esters, acyl taurates, alkyl monophosphates, alkyl triphosphates, polyoxyalkylene alkyl ether phosphates, dipolyoxyalkylene alkyl ether phosphates, tripolyoxyalkylene alkyl ether phosphates, alkali metal salts and ammonium salts of tripolyoxyalkylene alkyl ether phosphates, etc. Among these, salts of alkyl sulfates, salts of polyoxyethylene alkyl ether sulfates, salts of olefin sulfonic acids, and salts of alkane sulfonic acids are preferred. These anionic surfactants can be used alone or in combination of multiple ones.

[0013] The above anionic surfactants are compounds in the form of salts, and can be, for example, alkali metal salts such as sodium and potassium; alkaline earth metal salts such as magnesium; alkanolamine salts such as monoethanolamine, diethanolamine, and triethanolamine, etc.

[0014] The alkyl group of the alkyl sulfate salt is preferably an alkyl group having 8 to 18 carbon atoms. Examples of the alkyl sulfate salt include sodium lauryl sulfate, sodium myristyl sulfate, sodium cetyl sulfate, etc. Specifically, Persoft SK manufactured by NOF Corporation can be mentioned. The alkyl group of the alkyl ether sulfate salt is preferably an alkyl group having 10 to 18 carbon atoms. Further, the alkyl ether sulfate 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 5, and the average number of repeating units m of the oxypropion group is preferably 0 to 1. Examples of the alkyl ether sulfate salt include sodium polyoxyethylene lauryl ether sulfate, etc. Specifically, Adeka Hope YES-25 manufactured by ADEKA CORPORATION can be mentioned.

[0015] The alkenyl group of the alpha olefin sulfonate is preferably an alkenyl group having 8 to 20 carbon atoms, and more preferably an alkenyl group having 14 to 16 carbon atoms. Specifically, as the alpha olefin sulfonate, Lipolan LB-440 manufactured by Lion Specialty Chemicals Co., Ltd. can be mentioned.

[0016] For the alkane sulfonate and the secondary alkane sulfonate, it is preferable to use an alkane sulfonate having 14 to 18 carbon atoms. Specifically, examples include sodium secondary alkane (C14 - 17) sulfonate, sodium alkane (C14 - 18) sulfonate, etc. Specifically, the Hostapur SAS series manufactured by Clariant Japan K.K. can be mentioned.

[0017] The alkyl group of the alkyl diphenyl ether sulfonate is preferably an alkyl group having 8 to 18 carbon atoms. Specifically, as the alkyl diphenyl ether sulfonate, examples include Pelelex SS-H, Pelelex SS-L, etc. manufactured by Kao Corporation.

[0018] Sulfosuccinates are alkyl succinates having a sulfo group, and the alkyl group preferably has 6 to 18 carbon atoms. Specific examples of sulfosuccinates include sodium dioctyl sulfosuccinate, sodium didecyl sulfosuccinate, sodium didodecyl sulfosuccinate, and sodium di-2-ethylhexyl sulfosuccinate.

[0019] As the alkylbenzene sulfonate, an alkylbenzene sulfonate having a linear alkyl group is preferred, an alkylbenzene sulfonate having a linear alkyl group with 8 to 16 carbon atoms is preferred, and an alkylbenzene sulfonate having a linear alkyl group with 10 to 14 carbon atoms is particularly preferred.

[0020] The content of the anionic surfactant can be measured by the methylene blue back-titration method (JIS number: K3362:2008) after isolating the target component from the detergent composition. For the isolation of the target component from the detergent composition, refer to "Surfactant Separation and Analysis Technology by Original Chart", Technical Information Association, Chapter 4, Section 2, pp. 297-304, "Analysis of Dishwashing Detergents".

[0021] The concentrated neutral liquid detergent composition of the present invention contains a fatty acid alkanolamide as component (B). Examples of the fatty acid alkanolamide include mono- or dialkanolamides in which the fatty acid has 6 to 22 carbon atoms, preferably 8 to 22 carbon atoms, and fatty acid dialkanolamides are preferred. This component (B) mainly contributes to the viscosity and foaming property when diluted with water. From the viewpoint of viscosity, it is preferable to use coconut fatty acid diethanolamide. Specific examples of coconut fatty acid diethanolamide include Adeka Sol COA manufactured by ADEKA Corporation.

[0022] The content of the fatty acid alkanolamide can be measured by ion exchange chromatography (JIS number: K3362:2008) after isolating the target component from the detergent composition.

[0023] The concentrated neutral liquid detergent composition of the present invention contains an amphoteric surfactant as component (C). As long as the effects of the present invention are achieved, any amphoteric surfactant can be used. For example, alkylaminoacetate betaine, alkylamidopropyl betaine, sulfobetaine, alkylamino (mono- or di-) propionate, imidazolinium betaine, alkylamine oxide, alkylaminoethyl glycine, alkyldi(aminoethyl) glycine, glycine n-(3-aminopropyl) C10-16 derivative, alkylpolyaminoethyl glycine, alkyl β-alanine, alkyldiethanolamine, polyoxyalkylene alkylamine, oxyethylene-added type surfactant of diamine, etc. may be mentioned. Among these, betaine-type amphoteric surfactants are preferred, alkylamidopropyl betaine is more preferred, and laurylamidopropyl betaine is even more preferred. The alkyl group may be branched or linear. Component (C) mainly affects viscosity, foaming property, foam persistence, prevention of rough hands, etc. when diluted with water.

[0024] The alkyl group of alkylaminoacetate betaine is preferably an alkyl group having 8 to 20 carbon atoms. Specifically, as lauryldimethylaminoacetate betaine, ADEKA Anfort AB-35L manufactured by ADEKA Corporation, as myristyldimethylaminoacetate betaine, Recabion A-200 manufactured by Shin Nippon Rika Kogyo Co., Ltd., and as stearyldimethylaminoacetate betaine, Recabion A-700 manufactured by Shin Nippon Rika Kogyo Co., Ltd. may be mentioned.

[0025] The alkyl group of alkylamidopropyl betaine is preferably an alkyl group having 8 to 20 carbon atoms. Specifically, as coconut oil fatty acid amidopropyl betaine, Recabion B-200 manufactured by Shin Nippon Rika Kogyo Co., Ltd., and as laurylamidopropyl betaine, ADEKA Anfort PB-30L manufactured by ADEKA Corporation may be mentioned.

[0026] The alkyl group of the sulfobetaine is preferably an alkyl group having 8 to 20 carbon atoms. Specifically, as lauryl hydroxysulfobetaine, Amphitol 20HD manufactured by Kao Corporation can be mentioned.

[0027] The alkyl group of the imidazolinium betaine is preferably an alkyl group having 8 to 20 carbon atoms. Specifically, as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, Amphitol 20Y-B manufactured by Kao Corporation can be mentioned.

[0028] The content of the amphoteric surfactant can be measured by the Orange II method, TLC method, HPLC method, GC method (refer to "Separation and Analysis Techniques of Surfactants by Original Chart", Technical Information Association, Chapter 2, Section 4, pp. 221-247, "3. Quantitative Analysis Methods, 4. Separation and Analysis") after isolating the target component from the detergent composition. Regarding the isolation of the target component from the detergent composition, refer to "Analysis of Dishwashing Detergents", Technical Information Association, Chapter 4, Section 2, pp. 297-304.

[0029] The concentrated neutral liquid detergent composition of the present invention contains alkyl polyglucoside as component (D). Component (D) mainly affects detergency, foaming property, foam persistence, etc. From the viewpoints of foaming property and foam persistence, the alkyl group of the alkyl polyglucoside is preferably an alkyl group having 8 to 20 carbon atoms, more preferably 8 to 14 carbon atoms, and still more preferably 8 to 10 carbon atoms. Specifically, as the alkyl polyglucoside, Glucopon 215UP manufactured by BASF Japan Ltd. and Myadol 12 manufactured by Kao Corporation can be mentioned.

[0030] The content of alkyl polyglucoside can be measured by ion exchange chromatography (JIS number: K3362:2008) after isolating the target component from the detergent composition. However, the portion that has passed through the anion exchange resin and the cation exchange resin is alkyl glucoside, that is, the monomer, and since the polymer adsorbs to the anion exchange resin, it is eluted with acetic acid / ethanol or hydrochloric acid / methanol for quantification.

[0031] The above components (A) to (D) may each be a single component or a combination of a plurality of components.

[0032] The concentrated 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, distilled water can be used. Examples of tap water include 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 (E) in 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.

[0033] From the viewpoints of detergency, foaming property, and foam persistence, the ratio of alpha olefin sulfonate in 100% by mass of component (A) in the concentrated neutral liquid detergent composition of the present invention is 20% by mass or more, preferably 50% by mass or more, more preferably 80% by mass or more, and particularly preferably 100% by mass with respect to the total amount of component (A). When the ratio of alpha olefin sulfonate in 100% by mass of component (A) is less than 20% by mass, the detergency and storage stability at low temperatures may decrease.

[0034] (A) component may contain linear alkylbenzene sulfonate, but from the viewpoints of environmental issues and harshness, etc., it is preferably less than 50% by mass, more preferably 30% by mass or less, and still more preferably less than 15% by mass based on the total amount of the (A) component. Further, in another embodiment, it is preferably free of linear alkylbenzene sulfonate.

[0035] (A) The concentration in the concentrated neutral liquid detergent composition of the (A) component is not particularly limited as long as the effects of the present invention are achieved. However, from the viewpoints of detergency, foaming property, foam persistence, and storage stability of the concentrated neutral liquid detergent composition, it is preferably 1% by mass or more and 20% by mass or less, more preferably 2% by mass or more and 16% by mass or less, and still more preferably 4% by mass or more and 12% by mass or less based on the total amount of the concentrated neutral liquid detergent composition.

[0036] (B) The concentration in the concentrated neutral liquid detergent composition of the (B) component is not particularly limited as long as the effects of the present invention are achieved. However, from the viewpoints of viscosity and foaming property when the concentrated neutral liquid detergent composition is diluted with water, it is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 20% by mass or less, and still more preferably 4% by mass or more and 16% by mass or less based on the total amount of the concentrated neutral liquid detergent composition.

[0037] (C) The concentration in the concentrated neutral liquid detergent composition of the (C) component is not particularly limited as long as the effects of the present invention are achieved. However, from the viewpoints of viscosity, foaming property, foam persistence, and prevention of harshness when the concentrated neutral liquid detergent composition is diluted with water, it is preferably 1% by mass or more and 20% by mass or less, more preferably 2% by mass or more and 18% by mass or less, and still more preferably 4% by mass or more and 16% by mass or less based on the total amount of the concentrated neutral liquid detergent composition.

[0038] (D) The concentration in the concentrated neutral liquid detergent composition of the (D) component is not particularly limited as long as the effects of the present invention are achieved. However, from the viewpoints of detergency, foaming property, and foam persistence of the concentrated neutral liquid detergent composition, it is preferably 1% by mass or more and 20% by mass or less, more preferably 2% by mass or more and 16% by mass or less, and still more preferably 3% by mass or more and 12% by mass or less based on the total amount of the concentrated neutral liquid detergent composition.

[0039] The total amount of component (A), component (B), component (C) and component (D) in the concentrated neutral liquid detergent composition of the present invention is 20% by mass or more and 50% by mass or less. Preferably, it is 25% by mass or more and 45% by mass or less, and more preferably 30% by mass or more and 40% by mass or less. When the total amount of component (A), component (B), component (C) and component (D) is less than 20% by mass, the detergency and foam persistence may not be sufficient. When it exceeds 50% by mass, the storage stability deteriorates and the cost also increases.

[0040] The mass ratio of component (A) to component (C) in the concentrated neutral liquid detergent composition of the present invention is preferably such that the value of (A) / (C) is 0.1 or more and 5 or less, more preferably 0.2 or more and 4 or less, still more preferably 0.3 or more and 3 or less, and most preferably 0.4 or more and 2 or less. When the value of (A) / (C) is 0.1 or more and 5 or less, the viscosity improvement is sufficient when the concentrated neutral liquid detergent composition is diluted with water, and sufficient protection against rough hands is recognized.

[0041] The value of the mass ratio (A) / [(B)+(C)] of component (A), component (B) and component (C) in the concentrated neutral liquid detergent composition of the present invention is preferably 0.08 or more and 4 or less, more preferably 0.15 or more and 3 or less, and still more preferably 0.2 or more and 2 or less. When the value of (A) / [(B)+(C)] is 0.08 or more and 4 or less, sufficient viscosity can be obtained when the concentrated neutral liquid detergent composition is diluted with water.

[0042] In addition to the above components (A) to (E), the concentrated neutral liquid detergent composition of the present invention can contain an alkali metal salt as component (F). Component (F) contributes to the viscosity when the concentrated neutral liquid detergent composition is diluted with water. Examples of the alkali metal salt include sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium sesquicarbonate, potassium sesquicarbonate, sodium sulfate, potassium sulfate, sodium chloride, potassium chloride, sodium acetate, potassium acetate, sodium borate, potassium borate, sodium phosphate, potassium phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, etc. Among these, sodium chloride, potassium chloride, sodium sulfate, and potassium sulfate are preferred, and sodium chloride is particularly preferred.

[0043] (F) The concentration of the component in the concentrated neutral liquid detergent composition is not particularly limited as long as the effects of the present invention are achieved. However, from the viewpoints of the storage stability of the concentrated neutral liquid detergent composition and the viscosity when diluted with water, it is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.3% by mass or more and 8% by mass or less, and still more preferably 0.6% by mass or more and 6% by mass or less with respect to the total amount of the concentrated neutral liquid detergent composition.

[0044] In addition to the above components (A) to (E), the concentrated neutral liquid detergent composition of the present invention can contain a water-soluble solvent as component (G). Component (G) contributes to the storage stability of the concentrated neutral liquid detergent composition and the viscosity when diluted with water. Examples of the water-soluble solvent include alcohol solvents and glycol ether solvents. Examples of the alcohol solvent include ethyl alcohol, normal propanol, isopropanol, 3-methoxybutanol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol (molecular weight 200 to 1000), propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol (molecular weight 200 to 1000), 1,3-butylene glycol, 1,4-butanediol, 1,5-pentanediol, hexylene glycol, glycerin, etc. Examples of the glycol ether solvent include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, ethylene glycol dimethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, polyethylene glycol monomethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, dipropylene glycol monomethyl ether, dipropylene glycol dimethyl ether, tripropylene glycol monomethyl ether, 3-methyl-3-methoxybutanol, etc. These may be used alone or in combination of two or more. (G) component preferably contains an alcohol solvent, and ethanol, normal propanol, isopropanol, polyethylene glycol glycol, and propylene glycol are more preferred.

[0045] (G) The concentration of the component in the concentrated neutral liquid detergent composition is not particularly limited as long as the effects of the present invention are achieved. However, from the viewpoints of the storage stability, safety (flammability), and viscosity when diluted with water of the concentrated neutral liquid detergent composition, it is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 8% by mass or less, and still more preferably 1% by mass or more and 6% by mass or less based on the total amount of the concentrated neutral liquid detergent composition.

[0046] In the concentrated neutral liquid detergent composition of the present invention, a pH adjuster, a chelating agent, a food coloring, a preservative, a fragrance, a metal corrosion inhibitor, a natural extract, a thickener, an enzyme, etc. can be further blended as necessary.

[0047] The pH of the concentrated neutral liquid detergent composition of the present invention is 6 to 8 at 25°C. If the pH is less than 6, the storage stability of the undiluted solution becomes insufficient, which is not preferable. If the pH exceeds 8, it is not preferable in terms of preventing rough hands. As the pH adjuster, when the pH at 25°C is less than 6, for example, sodium hydroxide, potassium hydroxide, sodium acetate, sodium carbonate, potassium carbonate, sodium citrate, sodium hydrogen citrate, sodium phosphate, disodium hydrogen phosphate, monoethanolamine, diethanolamine, triethanolamine, etc. are used. When the pH exceeds 8, sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, sulfamic acid, citric acid, acetic acid, etc. are used. These may be used alone or in combination of two or more. The above pH was measured by the method of the examples described below.

[0048] Examples of the chelating agent include ethylenediaminetetraacetic acid, nitrilotriacetic acid, methylglycine diacetic acid, hydroxyethylenediamine triacetic acid, diethylenetriaminepentaacetic acid, triethylenetetraaminehexaacetic acid, hydroxyethyliminodiacetic acid, dihydroxyethylglycine, glutamic acid diacetic acid, aspartic acid diacetic acid, β-alanine diacetic acid, serine diacetic acid, tripolyphosphoric acid, and alkali metal salts thereof. These may be used alone or in combination of two or more.

[0049] Examples of food colorants 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), etc. 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), etc. Examples of flavors include, for example, natural flavors, synthetic flavors, or blended flavors thereof, etc. Examples of metal corrosion inhibitors include, for example, 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, etc. Examples of natural extracts include, for example, natural extracts derived from plants such as plants of the Asclepiadaceae family, Rubiaceae family, Brassicaceae family, Poaceae family, Fagaceae family, Asteraceae family, Lamiaceae family, Zingiberaceae family, Camelliaceae family, Solanaceae family, Cupressaceae family, Moraceae family, Vitaceae family, Fabaceae family, Rutaceae family, Liliaceae family, etc., and natural extracts derived from animals such as lysozyme, white shrimp protein extract, etc. Examples of thickeners include, for example, carrageenan, xanthan gum, guar gum, locust bean gum, ghatti gum, karaya gum, pectin, etc. Examples of enzymes include, for example, lipase, alkaline amylase, amylase, cellulase, protease, pullulanase, etc.

[0050] The viscosity of the concentrated neutral liquid detergent composition of the present invention is preferably 40 to 600 mPa·s, more preferably 55 to 500 mPa·s, and most preferably 70 to 400 mPa·s when the temperature of the detergent composition is 25°C. If the viscosity is 40 mPa·s or more, liquid dripping does not occur during liquid transfer and economical use can be achieved. If the viscosity is 600 mPa·s or less, it does not take time to dissolve in water and has excellent handleability. The component (G) may be added as required to adjust the viscosity. The viscosity was measured by the method of the following examples.

[0051] The viscosity (for example, when diluted 6-fold) when the concentrated neutral liquid detergent composition of the present invention is diluted with water is preferably 40 to 600 mPa·s, more preferably 55 to 500 mPa·s, and most preferably 70 to 400 mPa·s when the temperature of the detergent composition is 25°C. If the viscosity is 40 mPa·s or more, an appropriate amount can be discharged when used from the container to the sponge, and it can be used in an appropriate amount and economical use can be achieved. If the viscosity is 600 mPa·s or less, good handleability can be obtained. The component (G) may be added as required to adjust the viscosity. The viscosity was measured by the method of the following examples.

[0052] The concentrated neutral liquid detergent composition of the present invention can be suitably used, for example, for hand-washing hard surfaces in the washing of foods such as vegetables and fruits, kitchens in hotels, restaurants, eateries, school lunches, staff canteens, etc., workplaces in food processing factories, kitchens in ordinary households, etc., particularly for the washing of tableware and cooking utensils. For washing, usually, a detergent aqueous solution obtained by diluting the stock 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 a method of impregnating a sponge or the like with the stock solution or a detergent aqueous solution obtained by diluting the stock solution 6 to 20 times and hand-washing is used. Further, the concentrated neutral liquid detergent composition of the present invention can also be suitably used for washing hard surfaces such as floors, walls, worktables, shelves, etc. in the above-mentioned kitchens, workplaces, kitchens, etc., either as the stock solution or as a diluted solution diluted at an appropriate dilution ratio.

Examples

[0053] Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples. Each component used in the formulation in the Examples and Comparative Examples is shown below. In the following Examples and the like, "%" represents mass% unless otherwise specified, and the numerical values of the formulations in the Examples and Comparative Examples in the table represent the mass% of the pure component. The "balance" indicating the water content represents the formulation amount adjusted so that the total amount of the aqueous disinfectant, which is the final preparation, becomes 100 mass%. The compounds used in the Examples and Comparative Examples are described below. Regarding the notation of the alkyl group, for example, when it is denoted as alkyl (C8-18), it represents a mixture having an alkyl group with 8 or more and 18 or less carbon atoms.

[0054] Each component of the concentrated neutral liquid detergent composition (hereinafter abbreviated as the detergent composition) used in the formulations of the Examples and Comparative Examples is shown in Tables 1 to 8 below. Using the detergent composition, each measurement and evaluation described later were carried out. The measurement results and evaluation results are shown in Tables 1 to 8.

[0055] (A) component: anionic surfactant A-1: Sodium alpha olefin (C14-C16) sulfonate (manufactured by Lion Specialty Chemicals, product name "Lipolan LB-440 (trademark)") A-2: Sodium polyoxyethylene lauryl ether sulfate (manufactured by ADEKA, product name "Adekahope YES-25") A-3: Sodium alkane (C14-C18) sulfonate (manufactured by Clariant Japan, "Hostapur SAS30 (trademark)") A-4: Sodium alkyl (C8-C18) sulfate (manufactured by NOF Corporation, product name "Persoft SK") A-5: Sodium linear alkylbenzene sulfonate

[0056] (B) component: fatty acid alkanolamide B-1: Coconut fatty acid diethanolamide (manufactured by ADEKA, product name "Adekasol COA") B-2: Polyoxyethylene lauric acid monoethanolamide (manufactured by Kawaken Fine Chemicals, product name "Amizett 2LY (trademark)") B-3: Diethanolamide Laurate (manufactured by Kawaken Fine Chemicals, product name "Amisol LDE-G (trademark)") B-4: Palm Oil Fatty Acid Diethanolamide (manufactured by PT. Musim Mas, product name "MMAMIDE A8000")

[0057] (C) Component: Amphoteric Surfactant C-1: Laurylamidopropyl Betaine (manufactured by ADEKA, "Adeka Amphoate PB-30L") C-2: Coconut Oil Fatty Acid Amidopropyl Betaine (manufactured by Shin Nippon Rika Kogyo, "Rikabion B-200 (trademark)") C-3: Lauryl Dimethylamino Acetate Betaine (manufactured by ADEKA, "Adeka Amphoate AB-35L") C-4: Dodecyldimethylamine Oxide (manufactured by Global Amines, product name "GENAMINOX K-12 (trademark)") C-5: Octyldimethylamine Oxide (manufactured by Global Amines, product name "GENAMINOX OC (trademark)") C-6: Lauryl Hydroxysulfobetaine (manufactured by Kao, product name "Anhitol 20HD (trademark)") C-7: 2-Alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium Betaine (manufactured by Kao, product name "Anhitol 20Y-B (trademark)")

[0058] (D) Component: Alkyl Polyglycoside D-1: Alkyl (C8 - 10) Polyglycoside (manufactured by BASF Japan, product name "Glucopon 215UP (trademark)") D-2: Alkyl (C10 - 16) Polyglycoside (manufactured by Kao, product name "Maidol-12 (trademark)")

[0059] (E) Component: Water E-1: Ion-Exchange Water

[0060] (F) Component: Alkali Metal Salt F-1: Sodium Chloride F-2: Potassium Chloride F-3: Sodium Sulfate F-4: Sodium borate,

[0061] (G) component: Water-soluble solvent G-1: Ethanol G-2: Denatured ethanol (manufactured by Yamichi Chemical Industry Co., Ltd., product name "Mixed Ethanol NP") (As a representative value, ethanol: 85%, 1-propanol: 9.6%, 2-propanol: 4.9%) G-3: Polyethylene glycol (average molecular weight 200) G-4: Propylene glycol (manufactured by ADEKA, "Industrial Propylene Glycol")

[0062] For the detergent compositions of each example, the (C) component and the (D) component are added to a mixing tank, and if necessary, the (F) component, the (G) component, and other components are added to the mixing tank. If the viscosity is high and stirring is difficult, an appropriate amount of water may be added. Next, the (A) component and the (B) component are added and thoroughly mixed and stirred, and then, if necessary, an appropriate amount of a pH adjuster (hydrochloric acid, sodium hydroxide) is added so that the pH at 25°C is in the range of 6 to 8 (7.0) for preparation. Thereafter, water is added so that the total amount becomes 100% by mass, and further dilution treatment is performed to obtain a detergent composition.

[0063] Examples 1 to 70, Comparative Examples 1 to 6 The detergent compositions shown in Tables 1 to 8 were prepared. Using each detergent composition, detergency, foam persistence, foaming property, prevention of skin roughness, viscosity (undiluted solution, diluted solution), and storage stability were measured. The results of Examples 1 to 70 are shown in Tables 1 to 7, and the results of Comparative Examples 1 to 6 are shown in Table 8, respectively.

[0064] ※ Method for measuring pH Connect a combined electrode for pH measurement (manufactured by HORIBA; glass sliding sleeve type) to a pH meter (manufactured by HORIBA; pH / Ion Meter F-23), and turn on the power. As the internal solution of the pH electrode, a saturated potassium chloride aqueous solution (3.33 mol / L) was used. Next, 100 mL beakers were filled with a pH 4.01 standard solution (phthalate standard solution), a pH 6.86 (neutral phosphate standard solution), and a pH 9.18 standard solution (borate standard solution), respectively, and immersed in a constant temperature bath at 25 °C for 30 minutes. The pH measurement electrode was immersed in the temperature-adjusted standard solution for 3 minutes, and calibration operations were performed in the order of pH 6.86 → pH 9.18 → pH 4.01. Each detergent composition was filled into a 100 mL beaker and adjusted to 25 °C in a constant temperature bath. The pH measurement electrode was immersed in the temperature-adjusted sample for 3 minutes, and the pH of the composition was measured.

[0065] ※1: Method for measuring viscosity (undiluted solution, 6-fold diluted solution) The method for measuring viscosity is as follows: For the detergent composition, the undiluted solution and a 6-fold diluted solution (the detergent composition is diluted 6-fold with ion-exchanged water), at 25 °C, using a B-type viscometer (BM type, manufactured by Tokyo Keiki Co., Ltd.), with rotor No. 2, rotating at 30 rpm, and the viscosity 300 seconds after the start of rotation is taken as the measured value.

[0066] <Evaluation Criteria> ◎: Viscosity is 70 mPa·s or more and 400 mPa·s or less ○: Viscosity is 55 mPa·s or more and less than 70 mPa·s, or more than 400 mPa·s and 500 mPa·s or less △: Viscosity is 40 mPa·s or more and less than 55 mPa·s or more than 500 mPa·s and 600 mPa·s or less ×: Viscosity is less than 40 mPa·s or more than 600 mPa·s It was determined that △, ○, and ◎ are practical.

[0067] ※2: Detergency test Test method: A commercially available margarine (5 g) was applied to a melamine plate with a diameter of 20 cm and dried at room temperature. This served as the object to be washed. 1 g of the detergent composition diluted six-fold was taken and kneaded by hand 10 times with a dishwashing sponge (11.5×7.5×3.0 cm) containing tap water. Then, the object to be washed was washed for 10 seconds and rinsed with running water for 15 seconds. Whether dirt remained was determined visually and by touch (sliminess). If it could be washed, the same process was repeated without adding more cleaning solution until the object to be washed could no longer be washed. The detergency was evaluated by the number of objects to be washed that could be cleaned.

[0068] Detergency evaluation criteria: ◎: 15 or more ○: 10 - 14 △: 5 - 9 ×: 4 or less △, ○, and ◎ were determined to be practical.

[0069] ※3: Foam persistence test Test method: 1 g of the detergent composition diluted six-fold was taken and kneaded by hand 10 times with a dishwashing sponge (11.5 cm long × 7.5 cm wide × 3 cm high) containing tap water to generate foam. Then, 5 g of commercially available salad oil was added as dirt, and the foam persistence was visually evaluated from the state of foaming when kneaded 10 more times.

[0070] Foam persistence evaluation criteria: ◎: The surface of the sponge cannot be seen through the foam after adding dirt. ○: The surface of the sponge can be slightly seen through the foam after adding dirt. △: The foam after adding dirt is visible on the surface of the sponge, but the surface of the sponge can be clearly seen. ×: The foam after adding dirt is hardly visible on the surface of the sponge. △, ○, and ◎ were determined to be practical. Specific examples of each evaluation criterion are shown in Figure 1.

[0071] ※4: Foaming test Test method: Take 1 g of the detergent composition diluted 6-fold with tap water at 25°C and knead it 10 times by hand on a sponge for dishwashing (11.5 cm long × 7.5 cm wide × 3 cm high) containing tap water, and visually evaluate the state (foaming condition) according to the following evaluation criteria.

[0072] Evaluation criteria: ◎: A large amount of foam is generated and the surface of the sponge cannot be confirmed. ○: A large amount of foam is generated, but a part of the surface of the sponge can be confirmed. △: Generation of foam can be confirmed on a part of the surface of the sponge. ×: Slight foam can be confirmed on the surface of the sponge. And △, ○, and ◎ were determined to be practical. Note that specific examples of the evaluation criteria are shown in Figure 2.

[0073] ※5: Roughness prevention test Test method: Prepare a detergent solution of the detergent composition (concentration 5% by mass), put 3 liters of the aqueous solution in a bucket, keep the liquid temperature at 30°C, immerse the hands up to the wrists for 20 minutes a day, and then wash well with water. Repeat this operation for 3 days. Visually judge the condition of the hands of 5 subjects 4 days later according to the following evaluation criteria, and show the average score. In this test, it is desirable that the average score is 2 or more.

[0074] Evaluation criteria: 4 points: No roughness of the hands is observed. 3 points: Almost no roughness of the hands is observed. 2 points: Slight roughness of the hands is observed. 1 point: Roughness of the hands is observed.

[0075] Evaluation criteria: ◎: 4 points ○: 3 or more points and less than 4 points △: 2 or more points and less than 3 points ×: Less than 2 points And △, ○, and ◎ were determined to be practical.

[0076] ※6: Storage stability test Test method: 100 g of each cleaning composition was placed in a polypropylene container and left standing at 0 °C and 40 °C for one month, after which the appearance was observed.

[0077] Evaluation criteria: ○: No separation or turbidity is observed and it is stable. △: No overall separation, but slight turbidity is observed, and there are no problems in use. ×: Separation or turbidity is observed. Those rated △ and ○ were determined to be practical.

[0078] [Table 1]

[0079] [Table 2]

[0080] [Table 3]

[0081] [Table 4]

[0082] [Table 5]

[0083] [Table 6]

[0084] [Table 7]

[0085] [Table 8]

Claims

1. An anionic surfactant as component (A), a fatty acid alkanolamide as component (B), an amphoteric surfactant as component (C), an alkyl polyglucoside as component (D), and water as component (E) are contained, the component (A) contains an alpha olefin sulfonate, the total amount of the component (A), the component (B), the component (C) and the component (D) is 20% by mass or more and 50% by mass or less, and the ratio of the alpha olefin sulfonate in the component (A) is 20% by mass or more and 100% by mass or less based on the total amount of the component (A), a concentrated neutral liquid detergent composition.

2. The concentrated neutral liquid detergent composition according to claim 1, wherein the ratio of the alpha olefin sulfonate in the component (A) is 50% by mass or more and 100% by mass or less based on the total amount of the component (A).

3. The concentrated neutral liquid detergent composition according to claim 1 or 2, wherein the component (C) is a betaine-type amphoteric surfactant.

4. Furthermore, the concentrated neutral liquid detergent composition according to claim 1 or 2, which contains an alkali metal salt as component (F).

5. Furthermore, the concentrated neutral liquid detergent composition according to claim 1 or 2, which contains a water-soluble solvent as component (G).

6. The concentrated neutral liquid detergent composition according to claim 1 or 2, wherein the value of the mass ratio (A) / (C) of the component (A) and the component (C) is 0.1 or more and 5 or less.

7. The concentrated neutral liquid detergent composition according to claim 1 or 2, wherein the value of the mass ratio (A) / [(B)+(C)] of the component (A), the component (B) and the component (C) is 0.08 or more and 4 or less.

8. The concentrated neutral liquid detergent composition according to claim 1 or 2, which is used for washing at least one object to be washed selected from the group consisting of vegetables, fruits, tableware and cooking utensils.

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