Liquid laundry detergent composition

Abstract

To provide a liquid laundry detergent that ensures low-temperature stability and has a viscosity that is easy to use. [Solution] A liquid laundry detergent composition comprising the following component (A) and component (B), wherein the content of component (A) is 20% by mass or more relative to the total mass of the liquid laundry detergent composition, and the content of component (B) is 2% by mass or more relative to the total mass of the liquid laundry detergent composition. (A) Component: Polyoxyethylene alkyl ether (AE) (B) Component: Polyethylene glycol monophenyl ether

Description

Technical Field

[0001] The present invention relates to a liquid detergent composition for clothing.

Background Art

[0002] For liquid detergent compositions for textile products such as clothing, surfactants such as nonionic surfactants have conventionally been used. In Patent Document 1, compositions containing polyoxyethylene fatty acid methyl ester (MEE), branched polyoxyethylene alkyl ether (branched AE), etc. as nonionic surfactants are disclosed.

[0003] In Patent Document 2, as a method for improving the usability of a liquid detergent, it is disclosed that the viscosity of the liquid detergent is increased to improve the coating property on the object to be washed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] When using linear polyoxyethylene alkyl ether (linear AE), which is a general-purpose nonionic surfactant, instead of the nonionic surfactant disclosed in Patent Document 1, it is difficult to ensure low-temperature stability. Also, when the viscosity of the liquid detergent is increased to improve the coating property on the object to be washed, the low-temperature stability decreases. Therefore, it is difficult to prepare a liquid detergent composition for clothing that ensures low-temperature stability and has an excellent viscosity for usability. Therefore, an object of the present invention is to provide a liquid detergent composition for clothing that ensures low-temperature stability and has an excellent viscosity for usability.

Means for Solving the Problems

[0006] The present invention has the following aspects. [1] A liquid laundry detergent composition comprising the following component (A) and component (B), The content of component (A) is 20% by mass or more relative to the total mass of the liquid laundry detergent composition. A liquid detergent composition for clothing. (A) Component: Polyoxyethylene alkyl ether (AE) represented by the following formula (a1). RO-(EO) n -H ···(a1) [In formula (a1), R is an alkyl group having 8 to 22 carbon atoms. EO is an oxyethylene group. n is a number between 3 and 20, representing the average number of repeats of EO.] (B) Component: Polyethylene glycol monophenyl ether represented by the following formula (b1). [ka] [In structural formula (b1), n ​​is a number between 4 and 8, representing the average number of repeats.] [2] In formula (a1) representing component (A), R is a linear alkyl group having 8 to 22 carbon atoms. [1] The liquid laundry detergent composition described above. [3] The content of component (B) is 2% by mass or more with respect to the total mass of the liquid laundry detergent composition. A liquid laundry detergent composition as described in [1] or [2]. [4] The liquid laundry detergent composition further comprising component (C), The aforementioned component (C) is a non-soap-based anionic surfactant. A liquid laundry detergent composition as described in any one of [1] to [3]. [5] The (C) component is a non-soap-based anionic surfactant that includes one or more selected from the group consisting of the following (C1) component and the following (C2) component. The liquid laundry detergent composition described in [4]. (C1) Component: Linear alkylbenzene sulfonic acid or a salt thereof (C2) Component: Polyoxyalkylene alkyl (alkenyl) ether sulfate or salt thereof. [6] The content of component (C) is 5 to 20% by mass relative to the total mass of the liquid laundry detergent composition. A liquid laundry detergent composition as described in [4] or [5]. [7] The content of component (A) relative to the total mass of the liquid laundry detergent composition is greater than the content of component (B). A liquid laundry detergent composition as described in any one of [1] to [6]. [8] The total amount of component (A) and component (B) relative to the total mass of the liquid laundry detergent composition is greater than the amount of component (C). A liquid laundry detergent composition as described in any one of [4] to [7]. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a liquid laundry detergent composition that ensures low-temperature stability and has a viscosity that is easy to use. [Modes for carrying out the invention]

[0008] The following describes specific embodiments of the present invention, but the present invention is not limited to the following embodiments and can be implemented with various modifications within the scope of its gist.

[0009] In this specification, "liquid laundry detergent composition" may be referred to simply as "detergent composition."

[0010] In this specification and in the claims, a numerical range represented by "~" means a numerical range that includes the numbers before and after "~" as the lower and upper limits, respectively. For example, A~B is synonymous with A or greater and B or less.

[0011] In this specification, "viscosity with excellent usability" means that the viscosity of the detergent composition at a temperature of 25°C is greater than 150 Pa·s.

[0012] <Liquid detergent composition for clothing> The liquid detergent composition for clothing of the present invention contains the following component (A) and component (B), and the content of the component (A) is 20% by mass or more based on the total mass of the detergent composition.

[0013] [Component (A)] Component (A) is a polyoxyethylene alkyl ether (AE) represented by the following formula (a1). R-O-(EO) n -H ···(a1)

[0014] The content of component (A) in the detergent composition is 20% by mass or more based on the total mass of the detergent composition, preferably 30 to 45% by mass, and more preferably 33 to 40% by mass. When the content of component (A) in the detergent composition is at least the above lower limit value, the detergency can be further enhanced. When the content of component (A) in the detergent composition is at most the above upper limit value, the low-temperature stability can be further enhanced.

[0015] In the formula (a1), R is an alkyl group having 8 to 22 carbon atoms, EO is an oxyethylene group, and n is a number of 3 to 20 indicating the average repeating number of EO.

[0016] In the formula (a1), the number of carbon atoms contained in the alkyl group represented by R is 8 to 22, preferably 10 to 22, and more preferably 10 to 20. When the number of carbon atoms contained in the alkyl group represented by R in the formula (a1) is within the above numerical range, the detergency can be further enhanced.

[0017] In the formula (a1), the alkyl group represented by R may be linear or branched, but is preferably linear.

[0018] In formula (a1) above, n represents the average number of repeating oxyethylene groups (EO), where n is a number from 3 to 20, preferably from 4 to 18, and more preferably from 5 to 15. If the average number of repeating EO is above the lower limit, the cleaning power can be further enhanced. If the average number of repeating EO is below the upper limit, the low-temperature stability can be further enhanced.

[0019] In the above formula (a1), examples of component (A) in which the average number of repetitions of EO falls within the above preferred range include AE(7), AE(15), and AE(18). Here, the numbers in parentheses represent the average number of repetitions of EO.

[0020] AE(7) is a polyoxyethylene alkyl ether in which the structure represented by R in formula (a1) is a linear alkyl group, the linear alkyl group contains 12 to 14 carbon atoms, and the average number of repeating units of EO is 7.

[0021] AE(15) is a polyoxyethylene alkyl ether in which the structure represented by R in formula (a1) is a linear alkyl group, the linear alkyl group contains 12 to 14 carbon atoms, and the average number of repeating units of EO is 15.

[0022] As component (A), one type of component (A) may be used alone, or two or more types of components (A) with different n values ​​in formula (a1) may be used in combination. By using two or more types of components (A) with different n values ​​in formula (a1) in combination, low-temperature stability can be further enhanced.

[0023] [Other nonionic surfactants] Other nonionic surfactants are nonionic surfactants other than component (A). The detergent composition may also contain other nonionic surfactants.

[0024] Other nonionic surfactants include, for example, polyoxyalkylene alkyl ethers other than component (A), specifically polyoxyethylene polyoxypropylene alkyl ethers, alkylphenols, alkylene oxide adducts of fatty acids with 8 to 22 carbon atoms or amines with 8 to 22 carbon atoms, polyoxyethylene polyoxypropylene block copolymers, fatty acid alkanolamines, fatty acid alkanolamides, polyhydric alcohol fatty acid esters or their alkylene oxide adducts, polyhydric alcohol fatty acid ethers, alkyl (or alkenyl)amine oxides, alkylene oxide adducts of hydrogenated castor oil, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, alkyl glycosides, and the like.

[0025] If the detergent composition contains other nonionic surfactants, the total content of component (A) and other nonionic surfactants in the detergent composition is more than 20% by mass of the total mass of the detergent composition, preferably 30-45% by mass, and more preferably 33-40% by mass. If the content of component (A) in the detergent composition is above the lower limit, the cleaning power can be further enhanced. If the content of component (A) in the detergent composition is below the upper limit, the low-temperature stability can be further enhanced.

[0026] [(B) Component] Component (B) is polyethylene glycol monophenyl ether as shown in formula (b1) below.

[0027] [ka]

[0028] The content of component (B) in the detergent composition is preferably 2% by mass or more, more preferably 3 to 10% by mass, and even more preferably 5 to 8% by mass, based on the total mass of the detergent composition. If the content of component (B) in the detergent composition is above the lower limit, low-temperature stability can be further enhanced. If the content of component (B) in the detergent composition is below the upper limit, a viscosity with better usability can be achieved.

[0029] In formula (b1), the average number of repeating oxyethylene groups represented by n is between 4 and 8, preferably between 5 and 7, and more preferably between 5 and 6. When the average number of repeating oxyethylene groups represented by n in formula (b1) is within the above preferred range, low-temperature stability is enhanced and viscosity with excellent usability can be maintained.

[0030] (B) For example, a polyethylene glycol monophenyl ether in which the average number of repeating oxyethylene groups represented by n in formula (b1) is 6 can be mentioned.

[0031] [(C) component] The detergent composition of the present invention preferably further contains component (C), wherein component (C) is a non-soap-based anionic surfactant.

[0032] (C) Examples of component (C) include carboxylic acid-type anionic surfactants such as linear alkylbenzene sulfonic acid or its salt (LAS), polyoxyalkylene alkyl (alkenyl) ether sulfate or its salt (AES), α-olefin sulfonic acid or its salt (AOS), linear or branched alkyl sulfate or its salt (AS), polyoxyalkylene alkenyl ether sulfate or its salt, alkyl group-containing alkane sulfonic acid or its salt, α-sulfo fatty acid ester or its salt (MES), internal olefin sulfonic acid or its salt (IOS), hydroxyalkane sulfonic acid or its salt, alkyl ether carboxylic acid or its salt, polyoxyalkylene ether carboxylic acid or its salt, alkylamide ether carboxylic acid or its salt, alkenylamide ether carboxylic acid or its salt, acylaminocarboxylic acid or its salt; and phosphate ester-type anionic surfactants such as alkyl phosphate ester or its salt, polyoxyalkylene alkyl phosphate ester or its salt, polyoxyalkylene alkylphenyl phosphate ester or its salt, glycerin fatty acid ester monophosphate ester or its salt. These (C) components may be used individually or in combination of two or more.

[0033] Examples of salt forms of component (C) include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.).

[0034] The (C) component, which may be optionally included in the detergent composition of the present invention, is preferably a non-soap-based anionic surfactant comprising one or more selected from the group consisting of the following (C1) component and the following (C2) component. (C1) Component: Linear alkylbenzene sulfonic acid or its salt (LAS). (C2) Component: Polyoxyalkylene alkyl (alkenyl) ether sulfate or salt thereof (AES).

[0035] Component (C1) is a linear alkylbenzene sulfonic acid or its salt (LAS) represented by the following formula (c1). R-C6H4-SO3-M ···(c1)

[0036] In formula (c1) above, R is an alkyl group having 10 to 15 carbon atoms, and M is a cation that forms a salt or a hydrogen atom.

[0037] In formula (c1), the number of carbon atoms in the alkyl group represented by R is 10 to 15, preferably 10 to 14. In formula (c1), if the number of carbon atoms in the alkyl group represented by R is greater than or equal to the lower limit, the cleaning power can be further enhanced. In formula (c1), if the number of carbon atoms in the alkyl group represented by R is less than or equal to the upper limit, the low-temperature stability can be further enhanced.

[0038] In formula (c1), M may be a salt-forming cation or a hydrogen atom, but it is preferable that M be a salt-forming cation. In formula (c1), low-temperature stability can be further enhanced if M is a salt-forming cation.

[0039] In formula (c1), examples of cations represented by M include ions such as sodium, potassium, ammonium, and alkanolamines, with alkanolamines being preferred.

[0040] As for component (C1), for example, LAS is a compound alcohol (LAS) in which the alkyl group represented by R in formula (c1) has 10 to 14 carbon atoms, and the cation represented by M is monoethanolamine.

[0041] Component (C2) is a polyoxyalkylene alkyl (alkenyl) ether sulfate ester or its salt (AES) represented by the following formula (c2). RO(EO) n -SO3-M ···(c2)

[0042] In formula (c2) above, R is an alkyl group or alkenyl group having 8 to 18 carbon atoms, n is a number from 1 to 7 indicating the average number of repeating oxyethylene groups (EO), and M is a cation that forms a salt or a hydrogen atom.

[0043] In formula (c2), the alkyl group or alkenyl group represented by R has 8 to 18 carbon atoms, preferably 10 to 18, and more preferably 12 to 16. In formula (c2), if the number of carbon atoms in the alkyl group or alkenyl group represented by R is equal to or greater than the lower limit, the cleaning power can be further enhanced. In formula (c2), if the number of carbon atoms in the alkyl group or alkenyl group represented by R is equal to or less than the upper limit, the low-temperature stability can be further enhanced.

[0044] In formula (c2), n represents the average number of repetitions of the oxyethylene group (EO), and n is a number from 1 to 7, preferably from 1 to 5, and more preferably from 1 to 3. In formula (c2), if the average number of repetitions of EO is above the lower limit, low-temperature stability can be further enhanced. In formula (c2), if the average number of repetitions of EO is below the upper limit, cleaning power can be further enhanced.

[0045] In formula (c2), M may be a salt-forming cation or a hydrogen atom, but it is preferable that M be a salt-forming cation. In formula (c2), low-temperature stability can be further enhanced if M is a salt-forming cation.

[0046] In the above formula (c2), examples of cations represented by M include ions such as sodium, potassium, ammonium, alkanolamines, and alkaline earth metals, with alkanolamines being preferred.

[0047] Examples of component (C2) include AES, in which R in formula (c2) is an alkyl group, the alkyl group has 12 to 14 carbon atoms, the average number of repeating units of EO is 1, and the cation represented by M is monoethanolamine.

[0048] It is more preferable that component (C) in the detergent composition is component (C1). When component (C) in the detergent composition is component (C1), the cleaning power is higher.

[0049] There are no particular limitations on the content of component (C) in the detergent composition, but it is preferably 5 to 20% by mass, and more preferably 10 to 15% by mass, relative to the total mass of the detergent composition. When the content of component (C) in the detergent composition is above the lower limit, the low-temperature stability is further improved. When the content of component (C) in the detergent composition is below the upper limit, the decrease in viscosity can be suppressed.

[0050] [(A) / (B)] The content of component (A) relative to the total mass of the detergent composition is preferably greater than the content of component (B). Specifically, for example, the ratio of the content of component (A) to the content of component (B) in the detergent composition ((A) / (B)) is more preferably 3 to 20. Even more preferred ranges within the above range include, for example, 5 to 18 and 5 to 10. If the (A) / (B) ratio in the detergent composition is above the lower limit, the cleaning power can be further enhanced. If the (A) / (B) ratio in the detergent composition is below the upper limit, the low-temperature stability can be further enhanced.

[0051] [(A+B) / (C)] It is preferable that the total content of component (A) and component (B) relative to the total mass of the detergent composition is greater than the content of component (C). Specifically, for example, the total content of component (A) and component (B) relative to the content of component (C) in the detergent composition ((A+B) / (C)) is preferably 2 to 5. A more preferable range within the above range is, for example, 2.5 to 3. If the total content of component (A) and component (B) relative to the total mass of the detergent composition is greater than the content of component (C), the cleaning power can be further enhanced. If (A+B) / (C) in the detergent composition is greater than or equal to the lower limit above, the cleaning power can be further enhanced. If (A+B) / (C) in the detergent composition is less than or equal to the upper limit above, the liquid stability can be further enhanced.

[0052] [Optional ingredients] The detergent composition of the present invention may contain any component other than component (A), component (B), and component (C).

[0053] Optional ingredients include alkanolamines, water, dispersants, other anti-redeposition agents, chelating agents, enzymes, water-miscible organic solvents, higher fatty acids or their salts, pH adjusters, viscosity reducers and solubilizers, antibacterial agents, alkaline agents, structuring agents, thickeners, preservatives, antioxidants, inorganic reducing agents, enzyme stabilizers, texture enhancers, color transfer inhibitors, colorants, fragrances, emulsifiers, fluorescent agents, cationic polymers, discoloration inhibitors, hydrotropes, bleaching agents, pearlescent agents, and extracts of natural products. Optional ingredients may be used individually or in combination of two or more. The total amount of the above-mentioned components (A) to (C) and optional ingredients shall not exceed 100% by mass.

[0054] [Alkanolamines] The detergent composition of the present invention may contain an alkanolamine. By including an alkanolamine in the detergent composition, the pH can be increased, thereby further enhancing the cleaning power. In addition, if the detergent composition contains component (C), the alkanolamine neutralizes component (C), making the detergent composition transparent and further improving its liquid stability.

[0055] Compositions containing alkanolamines tend to yellow easily, but since the detergent composition of the present invention contains component (A), yellowing can be suppressed even if it contains alkanolamines, and liquid stability can be further improved.

[0056] The alkanolamine content is preferably 0.1 to 5% by mass, more preferably 0.2 to 4% by mass, and even more preferably 0.5 to 3% by mass, based on the total mass of the detergent composition. If the alkanolamine content in the detergent composition is above the lower limit, the detergent composition becomes transparent and its liquid stability is further enhanced. If the alkanolamine content in the detergent composition is below the upper limit, yellowing of the detergent composition is suppressed and its liquid stability is further enhanced.

[0057] [water] The detergent composition of the present invention may contain water. The inclusion of water in the detergent composition makes it easier to disperse the detergent composition in water after manufacturing.

[0058] The water content in the detergent composition is preferably more than 20% by mass, more preferably 20-50% by mass, even more preferably 25-40% by mass, and particularly preferably 30-40% by mass, relative to the total mass of the detergent composition. If the water content in the detergent composition is above the lower limit, the dispersibility of the detergent composition in water after manufacturing can be further improved. If the water content in the detergent composition is below the upper limit, the volume of the liquid detergent composition can be reduced by increasing the content of component (A).

[0059] [Dispersant] The detergent composition of the present invention may contain a dispersant. Examples of dispersants include alkylene oxide adducts of polyalkylene imines, polycarboxylic acid polymers, and salts of polycarboxylic acid polymers. Examples of alkylene oxide adducts of polyalkyleneimines include ethylene oxide adducts of polyalkyleneimines and ethylene oxide-propylene oxide adducts of polyalkyleneimines. Examples of commercially available alkylene oxide adducts of polyalkyleneimines include "Sokalan® HP20" manufactured by BASF.

[0060] Examples of polycarboxylic acid polymers and salts of polycarboxylic acid polymers include polyacrylic acid and its salts, polymaleic acid and its salts, acrylic acid-maleic acid copolymers and their salts, copolymers of a hydrocarbon having 4 to 12 carbon atoms and maleic acid and their salts, acrylic acid-methacrylic acid copolymers and their salts, and so on. Commercially available polycarboxylic acid polymers and salts of polycarboxylic acid polymers include, for example, one or more selected from copolymers of hydrocarbons with 4 to 12 carbon atoms and maleic acid and their salts, such as "Quinflow 540 (sodium salt)", "Quinflow 542 (sodium salt)", "Quinflow 543 (ammonium salt)", and "Quinflow 640 (sodium salt)" manufactured by Zeon Corporation, and "Sokalan® CP9 (sodium salt)" manufactured by BASF. Examples of one or more selected from acrylic acid-maleic acid copolymers and their salts include BASF's trade name "Sokalan® CP7 (sodium salt)" and Nippon Shokubai Co., Ltd.'s trade name "Aquaric® TL-400 (sodium salt)".

[0061] The amount of the dispersant contained in the detergent composition is preferably 0.1 to 10% by mass, and more preferably 1 to 5% by mass, relative to the total mass of the detergent composition. When the amount of the dispersant contained in the detergent composition is above the lower limit, the cleaning power is improved by suppressing the reattachment of sebum stains and their decomposition products removed from textile products during washing to the textile products. When the amount of the specific polymer contained in the detergent composition is below the upper limit, the liquid stability at low temperatures can be further improved.

[0062] [Other anti-redeposition agents] Examples of anti-redeposition agents other than dispersants (hereinafter also referred to as "other anti-redeposition agents") include water-soluble polymers having at least one repeating unit selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units, and at least one repeating unit selected from the group consisting of oxyalkylene units and polyoxyalkylene units. Specific examples of such water-soluble polymers include the trade names "TexCare® SRN-100" (manufactured by Clariant, mass-average molecular weight 2000-3000), "TexCare® SRN-300" (manufactured by Clariant, mass-average molecular weight 7000), "Repel-O-Tex Crystal" (manufactured by Rhodia), and "Repel-O-Tex® QC" (manufactured by Rhodia). Among these, TexCare® SRN-100 is preferred due to its high solubility in water and excellent liquid stability. Furthermore, due to its ease of handling, it is preferable to use TexCare® SRN-170C (manufactured by Clariant), which is commercially available as a 70% aqueous solution of TexCare® SRN-100, as another re-decontamination inhibitor.

[0063] [Chelating agent] The detergent composition of the present invention may contain a chelating agent. By including a chelating agent in the detergent composition, liquid stability can be further enhanced and color fading of the items being washed can be suppressed more effectively.

[0064] Examples of chelating agents include organic phosphonic acid derivatives such as citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, gluconic acid, nitrilotriacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, glycol etherdiaminetetraacetic acid, hydroxyethyliminodiacetic acid, triethylenetetraaminehexaacetic acid, ethane-1,1-diphosphonic acid, ethane-1,1,2-triphosphonic acid, trisodium methylglycinediacetate, 1-hydroxyethane-1,1-diphosphonic acid, ethanehydroxy-1,1,2-triphosphonic acid, ethane-1,2-dicarboxy-1,2-diphosphonic acid, methanehydroxyphosphonic acid, aminotrimethylenephosphonic acid, and ethylenediaminetetraximethylenesulfonic acid, or salts thereof. Citric acid is preferred as the chelating agent.

[0065] The content of the chelating agent in the detergent composition is preferably 0.01 to 5% by mass, and more preferably 0.03 to 3% by mass. When the content of the chelating agent in the detergent composition is above the lower limit, the cleaning power is enhanced and discoloration of the washed items can be suppressed more effectively. When the content of the chelating agent in the detergent composition is below the upper limit, the liquid stability at low temperatures can be further enhanced.

[0066] [enzyme] The detergent composition of the present invention may contain an enzyme. The inclusion of an enzyme in the detergent composition can further enhance its cleaning power. Here, "enzyme" refers to an enzyme preparation.

[0067] As the enzyme, either a liquid enzyme preparation or a solid (granular) enzyme preparation may be used. When using a solid enzyme preparation, it is preferable for some or all of it to be present in a solid state in the detergent composition, in terms of enzyme stability.

[0068] Examples of enzymes include proteases, amylases, lipases, cellulases, and mannanases. Proteases are preferred as the enzymes included in the detergent composition. By incorporating proteases into the detergent composition, the cleaning power against protein stains can be further enhanced.

[0069] As for the protease, a protease having serine, histidine, and aspartic acid in its molecule, such as a serine protease, is preferred. Specifically, as protease preparations, the following are available from Novozymes: Savinase® 16L, Savinase® Ultra 16L, Savinase® Ultra 16XL, Savinase® Evity 16L, Everlase® 16L TypeEX, Everlase® Ultra 16L, Esperase® 8L, Alcalase® 2.5L, Alcalase® Ultra 2.5L, Liquanase® 2.5L, Liquanase® Ultra 2.5L, Liquanase® Ultra 2.5XL, Coronase® 48L, Progress Uno 100L, Deozyme, Savinase® Evity 12T, Kannase Evity 24T; and from Genencor: Purafect L, Purafect Examples of products available from DuPont include OX, Properase L, EFFECTENZ P150, EFFECTENZ P100, and PREFERENZ P100.

[0070] Examples of amylases include amylase preparations available from Novozymes, such as Teramyl® 300L, Teramyl® Ultra 300L, Duramyl® 300L, Stainzyme® 12L, Stainzyme® Plus 12L, Amplify 12L, Amplify Prime 100L, and Stainzyme Plus 12T; Maxamyl from Genencor; EFFECTENZ S100 from DuPont; Pullulanase Amano from Amano Enzyme Co., Ltd.; and DB-250 from Seikagaku Corporation.

[0071] Examples of lipases include Lipex® 100L, Lipolase® 100L, and Lipex® 100T, which are available as lipase preparations from Novozymes.

[0072] Examples of cellulases include Endolase 5000L, Celluzyme® 0.4L, Carezyme® 4500L, and Celluclean® 4500T, all available from Novozymes, and REVITALENTZ 2000, available from DuPont.

[0073] Examples of mannanase include Mannaway® 4L and Mannaway® 4.0T, which are available as mannanase preparations from Novozymes.

[0074] Examples of multi-enzyme supplements containing two or more enzymes include those available from Novozymes, such as Medley® Core 210L, Medley® Core 200L, Medley® Boost 300L, Medley® Advance 200T, Medley® Glow 200L, Medley® Brilliant 100L, Medley® Essential 150L, ​​Medley® Core 200T, Medley® Clean®, Medley® Essential 200T, Medley® Smart®, Medley® Advance 200T, Medley® Boost 200L, Medley® Boost 200T, and Medley® Superio® 100T. Enzymes may be used individually or in combination of two or more types.

[0075] The enzyme content in the detergent composition is preferably 0.01 to 3.0% by mass, and more preferably 0.05 to 2.0% by mass, relative to the total mass of the detergent composition. If the enzyme content in the detergent composition is above the lower limit, the cleaning power will be further enhanced. If the enzyme content in the detergent composition is below the upper limit, enzyme precipitation will be suppressed, and the liquid appearance stability of the detergent composition will be further improved.

[0076] [Water-miscible organic solvent] The detergent composition of the present invention may contain water-miscible organic solvents other than component (B). Here, a water-miscible organic solvent refers to an organic solvent that dissolves in 25 g or more in 1 L of water at 25°C. Examples of water-miscible organic solvents include alcohols such as ethanol, glycerin, 1-propanol, 2-propanol, 1-butanol, and 3-methoxy-3-methyl-1-butanol (Solfit, trade name); glycols such as propylene glycol (PG), butylene glycol, and hexylene glycol; polyglycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol with a molecular weight of approximately 200 to 1000, and dipropylene glycol; and alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (butyl carbitol), and diethylene glycol dimethyl ether. Among these, ethanol, glycerin, 3-methoxy-3-methyl-1-butanol, propylene glycol, polyethylene glycol with a molecular weight of approximately 200 to 1000, and diethylene glycol monobutyl ether (butyl carbitol) are preferred from the viewpoint of low odor, ease of availability, and fluidity of the detergent composition, and ethanol, glycerin, propylene glycol, polyethylene glycol with a molecular weight of 200 to 1000, and 3-methoxy-3-methyl-1-butanol are more preferred.

[0077] Water-miscible organic solvents may be used individually or in combination of two or more, but a combination of two or more is preferable. The presence of two or more water-miscible organic solvents further enhances the liquid stability of the detergent composition. The content of water-miscible organic solvent in the detergent composition is preferably 1 to 40% by mass, and more preferably 5 to 30% by mass, relative to the total mass of the detergent composition.

[0078] [Higher fatty acids or their salts] The detergent composition of the present invention may contain a higher fatty acid or a salt thereof (soap). When the detergent composition contains a higher fatty acid or a salt thereof (soap), its antifoaming properties are enhanced. Here, antifoaming properties refer to the property of suppressing foaming when the detergent composition is used for washing, specifically when the detergent composition is diluted with tap water or the like.

[0079] Examples of higher fatty acids or their salts include monofatty acids or their salts such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, and behenic acid; and mixed fatty acids or their salts such as coconut fatty acid and beef tallow fatty acid. As higher fatty acids, lauric acid, myristic acid, palmitic acid, and coconut fatty acid are preferred, with coconut fatty acid being more preferred.

[0080] Examples of salt forms of higher fatty acids include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, calcium salts, etc.), ammonium salts, and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). Higher fatty acids or their salts may be used individually or in combination of two or more types.

[0081] The content of higher fatty acids or their salts in the detergent composition is preferably 0.5 to 10% by mass, and more preferably 1 to 8% by mass, relative to the total mass of the detergent composition. If the content of higher fatty acids or their salts in the detergent composition is above the lower limit, the defoaming properties can be enhanced. If the content of higher fatty acids or their salts in the detergent composition is below the upper limit, the liquid stability at low temperatures will be further improved.

[0082] [pH adjuster] The detergent composition of the present invention may contain a pH adjuster. Examples of pH adjusting agents include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; basic amino acids such as arginine and lysine; ammonia; sodium carbonate; and acidulants such as sulfuric acid, hydrochloric acid, and phosphoric acid. pH adjusting agents may be used individually or in combination of two or more. There are no particular limitations on the amount of pH adjusting agent to be added, and the amount required to adjust the detergent composition to a predetermined pH can be appropriately set.

[0083] [Thickening agents and solubilizers] The detergent composition of the present invention may contain a viscosity reducer and a solubilizer. Examples of viscosity reducers and solubilizers include aromatic sulfonic acids or their salts. Specifically, these include p-toluenesulfonic acid (pTS acid), xylenesulfonic acid, cumenesulfonic acid, substituted or unsubstituted naphthalenesulfonic acid, or salts thereof. Examples of aromatic sulfonic acid salts include sodium salts, potassium salts, calcium salts, magnesium salts, ammonium salts, or alkanolamine salts. Viscosity reducers and solubilizers may be used individually or in combination of two or more. The content of the viscosity reducer and solubilizer in the detergent composition is preferably 0.1 to 10% by mass relative to the total mass of the detergent composition.

[0084] [Antibacterial agent] The cleaning agent composition of the present invention may contain an antibacterial agent. Examples of antimicrobial agents include diclosan, triclosan, isopropylmethylphenol, polylysine, and polyhexamethylene biguanide. Among these, antimicrobial agents having a diphenyl structure are preferred, and diclosan and triclosan are more preferred. The antimicrobial agent may be used alone or in combination of two or more types. The amount of antibacterial agent contained in the detergent composition is preferably 0.001 to 10% by mass, and more preferably 0.01 to 5% by mass, relative to the total mass of the detergent composition.

[0085] [Alkaline agent] The cleaning agent composition of the present invention may contain an alkaline agent. Examples of alkaline agents include inorganic alkaline agents and organic alkaline agents.

[0086] Inorganic alkaline agents are components that dissolve entirely or partially in water to exhibit basic properties, and whose pH of a 1% by mass aqueous solution at 25°C is 8 or higher. Examples of inorganic alkaline agents include sodium carbonate, sodium bicarbonate, sodium carbonate and sodium bicarbonate double salts (sodium sesquicarbonate), potassium carbonate, potassium bicarbonate and other carbonates; and silicates such as sodium metasilicate and layered sodium silicate. Among these, sodium carbonate, potassium carbonate, sodium metasilicate, and layered sodium silicate are preferred from the viewpoint of providing higher cleaning power. Inorganic alkaline agents may be used individually or in combination of two or more. In addition, inorganic alkaline agents may be used as pH adjusters.

[0087] As an inorganic alkaline agent, for example, sodium tetraborate, sodium pyrophosphate, sodium tripolyphosphate, sodium hydroxide, potassium hydroxide, etc. may be used. The amount of inorganic alkaline agent contained in the detergent composition is preferably 20% by mass or less, and more preferably 0.5 to 10% by mass, relative to the total mass of the detergent composition.

[0088] Examples of organic alkali agents include alkanolamines such as 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, isopropanolamine, and diisopropanolamine. Among these, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, and diisopropanolamine are preferred. The organic alkali agent may be used alone or in combination of two or more types.

[0089] The content of the organic alkaline agent in the detergent composition is preferably 1.5 to 8% by mass, and more preferably 2 to 6% by mass, relative to the total mass of the detergent composition. The organic alkaline agent may also be used as a pH adjuster.

[0090] [Structuring agent] The cleaning agent composition of the present invention may contain a structuring agent. The detergent composition becomes structured when it contains a structuring agent. Therefore, if the detergent composition contains insoluble particles, the dispersion stability of the insoluble particles is enhanced, allowing the insoluble particles to be uniformly dispersed in the detergent composition and maintaining that state well. In this specification, structuring refers to a state in which the viscosity changes before and after force is applied.

[0091] Examples of structuring agents include bacterial cellulose, non-bacterial cellulose, and triglyceride components (hydrogenated castor oil, hydrogenated palm oil). Among these, bacterial cellulose and non-bacterial cellulose are preferred, and bacterial cellulose is more preferred, because they can sufficiently enhance the dispersion stability of insoluble particles even in small amounts and because a highly transparent liquid appearance can be easily obtained. The structuring agent may be used alone or in combination of two or more types.

[0092] The content of the structuring agent in the detergent composition is preferably 0.02 to 2% by mass, more preferably 0.04 to 1.5% by mass, and even more preferably 0.05 to 1% by mass, relative to the total mass of the detergent composition.

[0093] [Thickener] The detergent composition of the present invention may contain a thickening agent. Herein, the thickening agent is a thickening agent other than a structuring agent, and may hereinafter be referred to as "other thickening agents". Other thickeners include, for example, acrylic polymers, xanthan gum, and galageenan. Commercially available acrylic polymers include, for example, the Carbopol® series from Lubrizol. Examples of the Carbopol® series include Carbopol® ETD 2623, Carbopol® EZ3, Carbopol® EZ4, Carbopol® Ultrez20, Carbopol® Ultrez21, and Carbopol® Aqua 30. Other thickeners may be used individually or in combination of two or more. The content of other thickeners in the detergent composition is preferably 6% by mass or less, and more preferably 0.2 to 4% by mass, relative to the total mass of the detergent composition.

[0094] [Preservatives] The cleaning agent composition of the present invention may contain a preservative. Examples of preservatives include 2-bromo-2-nitropropane-1,3-diol, 3-iodopropynylbutylcarbamate, zinc pyrithione, sodium pyrithione, octylisothiazolin-3-one, 1,2-benzoisothiazolin-3-one (BIT), 5-chloro-2-methylisothiazolin-3-one (CMIT), 2-methylisothiazolin-3-one (MIT), ethoxylated cocoamine, octanediol, benzyl alcohol, phenoxyethanol, and sodium benzoate. Preservatives may be used individually or in combination of two or more. The preservative content in the detergent composition is preferably 0.001 to 2% by mass relative to the total mass of the detergent composition.

[0095] [Antioxidant] The cleaning agent composition of the present invention may contain an antioxidant. If the detergent composition contains an antioxidant, it can suppress the absorption of oxygen in the headspace of the container holding the detergent composition. In addition, it can suppress fading and discoloration caused by light and heat.

[0096] Examples of antioxidants include monophenol antioxidants such as dibutylhydroxytoluene and butylhydroxyanisole; bisphenol antioxidants such as 2,2'-methylenebis(4-methyl-6-t-butylphenol); and polymeric phenolic antioxidants such as dl-α-tocopherol. Among these, monophenolic antioxidants and polymeric antioxidants are preferred. Among monophenolic antioxidants, dibutylhydroxytoluene is particularly preferred. Among polymeric phenolic antioxidants, dl-α-tocopherol is particularly preferred. The antioxidant may be used alone or in combination of two or more types. The antioxidant content in the detergent composition is preferably 0.01 to 2% by mass relative to the total mass of the detergent composition.

[0097] [Inorganic reducing agent] The detergent composition of the present invention may contain an inorganic reducing agent. If the detergent composition contains an inorganic reducing agent, fading and discoloration caused by light and heat can be further suppressed. Examples of inorganic reducing agents include pyrosulfites such as sodium pyrosulfite and potassium pyrosulfite. Inorganic reducing agents may be used individually or in combination of two or more. The amount of inorganic reducing agent contained in the detergent composition is preferably 0.01 to 0.5% by mass, and more preferably 0.05 to 0.1% by mass, relative to the total mass of the detergent composition.

[0098] [Enzyme stabilizer] The detergent composition of the present invention may contain an enzyme stabilizer. Examples of enzyme stabilizers include boric acid, borax, formic acid or its salts, calcium chloride, calcium sulfate, and other calcium salts. Enzyme stabilizers may be used individually or in combination of two or more. The amount of enzyme stabilizer contained in the detergent composition is preferably 2% by mass or less relative to the total mass of the detergent composition.

[0099] [Texture enhancer] The cleaning agent composition of the present invention may contain an airflow enhancer. Examples of texture enhancers include silicones such as dimethyl silicone, polyether-modified silicone, and amino-modified silicone. Texture enhancers may be used individually or in combination of two or more types. The amount of texture-enhancing agent contained in the detergent composition is preferably 5% by mass or less relative to the total mass of the detergent composition.

[0100] [Dye transfer prevention agent] The detergent composition of the present invention may also contain a color transfer inhibitor. Examples of anti-transfer agents include polyvinylpyrrolidone, carboxymethylcellulose, and polyalkyleneamines. These anti-transfer agents may be used individually or in combination of two or more. The amount of color transfer inhibitor contained in the detergent composition is preferably 3% by mass or less relative to the total mass of the detergent composition.

[0101] [Coloring agent] The cleaning agent composition of the present invention may contain a coloring agent. There are no particular limitations on the type of colorant; examples include pigments listed in the "Handbook of Legal Pigments" (Japan Cosmetic Industry Association) and those with chemically modified chromophores with water-soluble polymers at the ends of the structure. The colorants include CI Acid Red 138, CI Acid Red 260, CI Acid Red 106, Acid Blue 9, Blue No. 1, Blue No. 205, Green No. 3, Levanyl(registered trademark) Violet, Liquitint(registered trademark) BLUE SE, Liquitint(registered trademark) BLUE HP, Liquitint(registered trademark) BLUE MC, Liquitint(registered trademark) VIOLET CT, Liquitint(registered trademark) VIOLET LS, Liquitint(registered trademark) VIOLET DD, and VIOLET SH. SH), VIOLET FL (Liquitint® Violet FL), Liquitint® GREEN SA (Liquitint® Green SA), SEA GREEN CC (Liquitint® Sea Green CC), Liquitint® Bright Yellow (Liquitint® Bright Yellow), Liquitint® YELLOW SY (Liquitint® Yellow SY), Liquitint® YELLOW LP (Liquitint® Yellow LP), Liquitint® PINK AL (Liquitint® Pink AL), Liquitint® RED MX (Liquitint® Red MX), CI77007 (Pigment Blue 29, L-280 BLUE U), CI74160 (Pigment Blue 15), CIExamples of general-purpose dyes and pigments include 77346 (Pigment Blue 28), CI77343 (Pigment Blue 36), CI74260 (Pigment Green 7), CI74265 (Pigment Green 36), WA-S Color Green, CI21090 (Pigment Yellow 12, Yellow 205), CI56110 (Pigment Red 254), CI12490 (Pigment Red 5), Labracol 040(F) Red, and PIGMOSOL®. In this specification, "CI" stands for Color Index. Colorants may be used individually or in combination of two or more.

[0102] The amount of colorant contained in the detergent composition is preferably 0.000001 to 1.0% by mass, and more preferably 0.00001 to 0.1% by mass, relative to the total mass of the detergent composition. If the amount of colorant contained in the detergent composition is above the lower limit, the detergent composition can be sufficiently colored. If the amount of colorant contained in the detergent composition is below the upper limit, pigment deposition on the items to be washed is less likely to occur, and a detergent composition with excellent dispersion stability can be obtained.

[0103] [Fragrance] The detergent composition of the present invention may contain a fragrance. Examples of fragrances include fragrance raw materials alone, or fragrance compositions comprising fragrance raw materials, fragrance solvents, fragrance stabilizers, etc., and fragrances commonly used in detergent compositions can be incorporated. Capsule fragrances may also be incorporated. The fragrance content in the detergent composition is preferably 0.01 to 5% by mass relative to the total mass of the detergent composition.

[0104] [Emulsifier] The detergent composition of the present invention may contain an emulsifying agent. Examples of emulsifiers include polystyrene emulsion and polyvinyl acetate emulsion, and emulsions with a solid content of 30-50% by mass are usually preferred. Specific examples include polystyrene emulsion (product name: Saibinol® RPX-196 PE-3, solid content 40% by mass, manufactured by Saiden Chemical Co., Ltd.), Opulyn 301, and Acusol OP 301. The emulsifier may be used alone or in combination of two or more types. The amount of emulsifier contained in the detergent composition is preferably 0.001 to 0.5% by mass relative to the total mass of the detergent composition.

[0105] [Fluorescent dye] The cleaning agent composition of the present invention may contain a fluorescent agent. Examples of fluorescent agents include biphenyl-type fluorescent agents such as 4,4'-bis-(4-chloro-3-sulfostyryl)-biphenyldisodium salt; and stilbene-type fluorescent agents such as 4,4'-bis((4-amino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2'-disulfonate and 4,4'-bis((4-toluidino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2'-disulfonate. Fluorescent agents may be used individually or in combination of two or more. The amount of fluorescent agent contained in the detergent composition is preferably 0.05 to 1% by mass relative to the total mass of the detergent composition.

[0106] [Cationized polymer] The detergent composition of the present invention may contain a cationized polymer. Examples of cationized polymers include 4,4'-bis(2-sulfostyryl)biphenyl disodium salt, polymers of dimethyldiallylammonium chloride, dimethyldiallylammonium chloride-acrylamide copolymers, dimethyldiallylammonium chloride-acrylic acid copolymers, cationized cellulose, imidazolinium chloride-vinylpyrrolidone copolymer, polyethyleneimine, cationized polyvinyl alcohol, natural polymer derivatives having amino groups such as chitosan, and copolymers with vinyl monomers having hydrophilic groups to which diethylamino methacrylate-ethylene oxide or the like are added. Cationic polymers may be used individually or in combination of two or more types. The content of the cationized polymer in the detergent composition is preferably 0.1 to 3% by mass relative to the total mass of the detergent composition.

[0107] <Physical properties> [pH] The pH of the detergent composition at 25°C is preferably 5 to 9, more preferably 5.5 to 8.5, and even more preferably 6 to 8. If the pH of the detergent composition is above the lower limit, the liquid appearance stability can be well maintained. If the pH of the detergent composition is below the upper limit, damage to textile products such as clothing can be suppressed. In addition, the liquid appearance stability of the detergent composition can be well maintained.

[0108] The pH of the detergent composition can be adjusted by adding a pH adjuster as needed. The pH of the detergent composition is measured using a pH meter (manufactured by Toa DKK Co., Ltd., product name "HM-30G") at a temperature of 25°C.

[0109] [viscosity] The viscosity (at 30°C) of the detergent composition is preferably, for example, greater than 150 mPa·s and less than or equal to 250 mPa·s, and more preferably greater than 200 mPa·s and less than or equal to 250 mPa·s. When the viscosity of the detergent composition is within the above range, the applicability to the object to be washed and the discharge of the liquid detergent from the container are improved, resulting in a viscosity with excellent usability. The viscosity of the liquid detergent is shown as the value measured using a Type B viscometer (manufactured by TOKIMEC Corporation) (measurement conditions: rotor No. 2, rotation speed 30 rpm, viscosity after 1 minute).

[0110] <Manufacturing method> The method for manufacturing the detergent composition is not particularly limited, and the detergent composition can be manufactured in accordance with conventional methods. For example, a detergent composition can be obtained by mixing the components that make up the detergent composition. Alternatively, a detergent composition may be produced by mixing some of the components (A) to (C) described above with other optional components as needed, adjusting the pH to a predetermined level using a pH adjuster as needed, and then mixing in the remaining water.

[0111] <How to use> Methods of using the detergent composition include, for example, putting the detergent composition into the detergent composition dispenser of a washing machine and then operating the washing machine; adding the detergent composition to the water together with the items to be washed during washing; immersing the items to be washed in a detergent solution prepared by dissolving the detergent composition in water beforehand; and applying the detergent composition directly to the items to be washed, leaving it for, for example, 3 minutes to 24 hours, and then performing a normal wash.

[0112] Furthermore, it is preferable to use a washing machine equipped with an automatic detergent dispenser, which has been put into practical use in recent years. The automatic detergent dispenser is a device that automatically dispenses the detergent composition from a tank containing the detergent composition into the washing tub via a filter for removing debris located at the bottom of the tank and a dispensing pipe. A measuring means such as a syringe pump is provided in the middle of the dispensing pipe, allowing a fixed amount set according to the amount of laundry, etc., to be transferred from the tank to the washing tub. Using an automatic detergent dispenser not only eliminates the hassle of measuring, but also prevents detergent from getting on your hands or spilling and staining the washing machine or surrounding area during the measuring process.

[0113] Furthermore, it is preferable to use an automatic dispenser that can automatically dispense a predetermined amount of liquid. Using an automatic dispenser is also preferable because it allows for accurate measurement of even small amounts of the cleaning agent composition, making it easier to achieve sufficient cleaning power and avoiding waste due to overuse. Some automatic dispensers utilize infrared sensors or similar technologies to dispense automatically without requiring the user to touch any switches. Using such an automatic dispenser allows users to measure out the cleaning agent composition simply by holding a container in one hand, significantly reducing the burden on the user.

[0114] Furthermore, when using an automatic dispenser, it is preferable to receive the detergent composition dispensed into a flexible container and then place that flexible container directly into the washing machine. This ensures that the entire amount of the dispensed detergent composition is reliably dissolved in the washing solution. Examples of materials for flexible containers that can be directly put into a washing machine include silicone resin, polyvinyl chloride, elastomer, flexible polyester, flexible polypropylene, and polyurethane.

[0115] Examples of items to be washed include clothing, dishcloths, towels, sheets, curtains, and other textile products. The material of the textile products is not particularly limited and may be any of the following: natural fibers such as cotton, silk, and wool, or synthetic fibers such as polyester and polyamide. When using a detergent composition dissolved in water, it is preferable to dilute it, for example, 5 to 6,000 times (by volume). The bath ratio (mass of washing solution / mass of clothing), which is the amount of water per unit of clothing, is preferably 5 or higher for drum-type washing machines and 10 or higher for top-loading washing machines. The detergent composition is suitable as a detergent for textile products. [Examples]

[0116] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following description. In these examples, "%" refers to "mass%" unless otherwise specified.

[0117] <Raw materials used> [(A) component] (A) The following compounds were used as component (A). AE7 AE7 is obtained by adding 7 moles of ethylene oxide to a polyoxyethylene alkyl (12-14 carbon atoms) ether (average number of moles of ethylene oxide added: 7) and a natural alcohol (Procter & Gamble, trade name "CO-1214"). In AE7, in formula (a1), R is an alkyl group with 12-14 carbon atoms, and the average number of repeating EOs is 7. AE15 AE15 is obtained by adding 15 moles of ethylene oxide to a polyoxyethylene alkyl (12-14 carbon atoms) ether (average number of added moles of ethylene oxide is 15) and a natural alcohol (Procter & Gamble, trade name "CO-1214"). In AE15, in formula (a1), R is an alkyl group having 12-14 carbon atoms, and the average number of repeating EOs is 15.

[0118] [(B) Component] (B) Polyoxyethylene glycol monophenyl ether (manufactured by Dow Chemical Ltd., trade name "DOWANOL® EPh6") was used as component (B). In DOWANOL® EPh6, the average number of repeating oxyethylene groups represented by n in formula (b1) is 6. D

[0119] [(B)´ component] The component (B)' used as a substitute for component (B) was butyl carbitol (manufactured by Lion Specialty Chemicals Co., Ltd., product name "Diethylene Glycol Monobutyl Ether") and phenoxyethanol (manufactured by Sanyo Chemical Industries, Ltd., product name "Newpol® EFP").

[0120] [C component] The following compounds were used as component (C). ·LAS For the LAS (Laser Atomizer), we used LAS-H (10-14 carbon atoms, manufactured by Lion Corporation, product name "Lypon (registered trademark) LH-200"). AES As the AES, a mixture of a linear alkyl group with 12 carbon atoms (C12) having an average number of repeating oxyethylene groups of 1, and a linear alkyl group with 14 carbon atoms (C14) having an average number of repeating oxyethylene groups of 1 (mass ratio of C12:C14 = 75:25) was used.

[0121] [Optional ingredients] The following compounds were used as optional components. • PEG1000: Polyethylene glycol (manufactured by Lion Corporation, product name "PEG#1000-L60", mass-average molecular weight = 1000). • Coconut fatty acid: Manufactured by NOF Corporation, product name "Coconut Fatty Acid". • Citric acid: Manufactured by Fuso Chemical Industry Co., Ltd., product name "Liquid Citric Acid". • Ethanol: Manufactured by Nippon Alcohol Sales Co., Ltd., product name "Specific Alcohol 95% Synthetic". • pTs: p-toluenesulfonic acid (manufactured by Kyowa Kirin Holdings Co., Ltd., product name "PTS Acid"). • MEA: Monoethanolamine (manufactured by MIWON Chemical, product name "Monoethanolamine"). Sodium sulfite: Sodium sulfite (manufactured by Shinshu Chemical Co., Ltd., product name "Sodium Sulfite"). • Fragrance: Fragrance A as described in Tables 11-18 of Japanese Patent Publication No. 2002-146399. • Enzymes: Multi-enzyme (enzyme liquid preparation, manufactured by Novozymes Co., Ltd., product name "Medley® Core 210L"). • Dichrosan: 4,4'-dichloro-2-hydroxydiphenyl ether (manufactured by BASF, trade name "TINOSAN® HP100"). • SRN-170C: Manufactured by Clariant Japan, product name "TexCare(registered trademark) SRN-170C", mass-average molecular weight = 2000~3000, pH (5% by mass aqueous solution at 20℃) = 4, viscosity (20℃) = 300 mPa·s). TexCare(registered trademark) SRN-170C is a 70% by mass aqueous solution of product name "TexCare(registered trademark) SRN-100" (manufactured by Clariant Japan, mass-average molecular weight: 2000~3000). • HP20: Ethylene oxide adduct of polyethyleneimine (manufactured by BASF, trade name "Sokalan® HP20").

[0122] [Preparation of detergent composition] Detergent compositions for Examples 1-17 and Comparative Examples 1-5 were prepared according to the compositions shown in Tables 1-3. For the preparation method, component (A), component (B), and other components were added to water and mixed according to the compositions shown in Tables 1 to 3 to prepare the liquid detergent compositions for each example.

[0123] <Evaluation Method> [Low temperature stability] 100 mL of the cleaning agent composition was added to a transparent glass bottle (wide-mouth standard bottle PS-NO.11), and the lid was closed to seal it. After storing it in a -5°C constant temperature bath for 30 days, the appearance of the liquid was visually observed, and its low-temperature stability was evaluated according to the evaluation criteria below.

[0124] [Criteria for evaluating low-temperature stability] The evaluation criteria for low-temperature stability are shown below. Of the evaluations below, evaluations I and II were deemed acceptable. In the evaluations below, evaluations I and II are preferred, with evaluation I being more preferred. I: No sediment was observed at the bottom of the glass bottle, and the liquid is fluid. II: A precipitate is observed at the bottom of the glass bottle, the liquid is fluid, and the precipitate disappears (dissolves) when the glass bottle is gently shaken. III: A precipitate is observed at the bottom of the glass bottle, and the precipitate does not disappear even when the glass bottle is gently shaken, or the detergent composition gels and loses its fluidity or becomes cloudy immediately after production.

[0125] [viscosity] 100g of the cleaning agent composition was filled into a transparent glass bottle (wide-mouth standard bottle PS-NO.11) and stored for 2 hours in a constant temperature bath (manufactured by THOMAS, product name "T22LA") set to 25°C. Subsequently, the viscosity of the detergent composition was measured using a Type B viscometer (TOKIMEC Corporation, product name "Viscometer TV-20"). The measurement conditions for the Type B viscometer were set to a rotation speed of 60 rpm, rotor No. 2, rotation time of 60 seconds, and temperature of 25°C. The viscosity was evaluated according to the following evaluation criteria.

[0126] [Viscosity Evaluation Criteria] The viscosity evaluation criteria are shown below. Of the evaluations below, evaluations I and II were deemed acceptable, indicating that the viscosity is of excellent usability. In the evaluations below, evaluations I and II are preferred, with evaluation I being more preferred. I: Viscosity is greater than 200 mPa·s and less than or equal to 250 mPa·s. II: Viscosity greater than 150 mPa·s and less than or equal to 200 mPa·s. III: Viscosity is 150 mPa·s or less.

[0127] The detergent compositions of Examples 1-17 and Comparative Examples 1-5 were evaluated using the evaluation method described above. The evaluation results are shown in Tables 1-3.

[0128] [Table 1]

[0129] [Table 2]

[0130] [Table 3]

[0131] Examples 1 to 9 and Comparative Examples 1 and 2 demonstrate that including component (B) in the detergent composition improves low-temperature stability.

[0132] Examples 1 to 3 demonstrate that increasing the content of component (B) in the detergent composition improves low-temperature stability.

[0133] Examples 2 and 9 demonstrate that reducing the LAS content in component (C) of the detergent composition reduces low-temperature stability but improves viscosity.

[0134] Examples 1 and Comparative Examples 1 and 2 show that when component (B) in the detergent composition is replaced with butyl carbitol or phenoxyethanol, the low-temperature stability decreases.

[0135] Examples 10 to 17 demonstrate that the low-temperature stability and viscosity of the detergent composition are not impaired even when the content of the enzyme, antibacterial agent, dispersant, and anti-redeposition agent other than the dispersant is changed.

[0136] Comparative Examples 1 and 3 showed that when the butyl carbitol content in the detergent composition was changed from 2% by mass to 4% by mass, the same amount as component (B) in Example 2, the low-temperature stability improved, but the viscosity decreased compared to Example 2.

[0137] Comparative Examples 2 and 4 showed that when the phenoxyethanol content in the detergent composition was changed from 2% by mass to 4% by mass, the same amount as component (B) in Example 2, the low-temperature stability and viscosity decreased compared to Example 2.

Claims

1. A liquid laundry detergent composition comprising the following components (A) and (B), The content of component (A) is 20% by mass or more relative to the total mass of the liquid laundry detergent composition. A liquid detergent composition for clothing. (A) Component: Polyoxyethylene alkyl ether (AE) represented by the following formula (a1). 4-9-(59) ｎ ・・・(11) [In formula (a1), R is an alkyl group having 8 to 22 carbon atoms. EO is an oxyethylene group. n is a number from 3 to 20, representing the average number of repeating EO groups.] (B) Component: Polyethylene glycol monophenyl ether represented by the following formula (b1). 【Chemistry 1】 [In structural formula (b1), n ​​is a number between 4 and 8, representing the average number of repeats.]

2. In the formula (a1) representing component (A), R is a linear alkyl group having 8 to 22 carbon atoms. The liquid laundry detergent composition according to claim 1.

3. The content of component (B) is 2% by mass or more relative to the total mass of the liquid laundry detergent composition. The liquid laundry detergent composition according to claim 1.

4. The liquid laundry detergent composition further comprises component (C), The aforementioned component (C) is a non-soap-based anionic surfactant. The liquid laundry detergent composition according to claim 1.

5. The aforementioned component (C) is a non-soap-based anionic surfactant comprising one or more selected from the group consisting of the following components (C1) and (C2). The liquid laundry detergent composition according to claim 4. (C1) Component: Linear alkylbenzene sulfonic acid or a salt thereof. (C2) Component: Polyoxyalkylene alkyl (alkenyl) ether sulfate ester or salt thereof.

6. The content of component (C) is 5 to 20% by mass relative to the total mass of the liquid laundry detergent composition. The liquid laundry detergent composition according to claim 4.

7. The content of component (A) relative to the total mass of the liquid laundry detergent composition is greater than the content of component (B). A liquid laundry detergent composition according to any one of claims 1 to 3.

8. The total amount of component (A) and component (B) relative to the total mass of the liquid laundry detergent composition is greater than the amount of component (C). A liquid laundry detergent composition according to any one of claims 4 to 6.

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