Liquid detergent composition for textile products

Abstract

To a concentrated type liquid detergent composition for a fiber product having excellent detergency, low temperature stability and high temperature stability.SOLUTION: There is provided a liquid detergent composition for a fiber product which comprises a component (A): a nonionic surfactant represented by the following formula (a1), a component (B): a guerbet alcohol-type nonionic surfactant represented by the following formula (b1), a component (C): a non soap-type anionic surfactant and water, wherein the content of the water is 40 mass% or less based on the total mass of the liquid detergent composition for a fiber product and (A) / (B), which represents the mass ratio of the content of the component (A) to the content of the component (B), is 3 or more. R11-O-[(EO)s / (A11O)t]-(EO)u-R12 (a1). R1-CHR2-CH2-O-(R3O)p-H (b1).SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to a liquid detergent composition for textile products. [Background technology]

[0002] In the field of liquid detergents for textile products, there is growing awareness of environmental impact. Therefore, efforts are being made to reduce energy consumption in logistics and decrease waste by miniaturizing the containers that hold these liquid detergents. With the miniaturization of containers, there is a growing demand for liquid detergents that not only have high cleaning power but also require less detergent per wash. To meet these demands, concentrated liquid detergents with a higher concentration of surfactants have been proposed (for example, Patent Document 1). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2010-229387 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] Among liquid detergents containing high concentrations of surfactants, those containing high concentrations of polyoxyalkylene-type nonionic surfactants with linear hydrocarbon groups are prone to precipitation and sedimentation when stored at high temperatures, and prone to gelation and solidification at low temperatures (e.g., 5°C) such as when used in winter. Furthermore, in recent years, there has been an increase in washing machines that automatically dispense detergent. Consequently, the amount of liquid detergent needed for multiple washes is now filled into a tank inside the washing machine, and the liquid detergent is stored in the tank even during washing. The detergent tank is generally not airtight and is exposed to the heat generated by the washing machine. Therefore, the liquid detergent filled in the tank is at a higher risk of sedimentation and precipitation as described above, and weight loss is also a concern. Blending a branched nonionic surfactant into a liquid detergent is considered useful for enhancing fluidity at low temperatures. However, when a general-purpose branched nonionic surfactant is blended, the detergency tends to decrease.

[0005] An object of the present invention is to provide a concentrated liquid detergent composition for textile products that is excellent in detergency, low-temperature stability, and high-temperature stability.

Means for Solving the Problems

[0006] The present invention has the following aspects. <1> (A) component: a nonionic surfactant represented by the following formula (a1), and (B) component: a garbet alcohol type nonionic surfactant represented by the following formula (b1), and (C) component: a non-soap anionic surfactant, and water, and the content of the water is 40% by mass or less based on the total mass of the liquid detergent composition for textile products, a liquid detergent composition for textile products in which the mass ratio (A) / (B) representing the content of the (A) component to the content of the (B) component is 3 or more. R 11 -O-[(EO) s / (A 11 O) t -(EO) u -R 12 ···(a1) [In formula (a1), R 11 is a linear hydrocarbon group having 8 to 22 carbon atoms, R 12 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s is a number from 3 to 25 indicating the average number of EO repetitions, A 11 O is at least one of an oxypropylene group and an oxybutylene group, t is a number from 〇 to 6 indicating the average number of A 11 O repetitions, and u is a number from 〇 to 20 indicating the average number of EO repetitions.] R 1 -CHR 2 -CH2-O-(R3 O) p -H ···(b1) [In formula (b1), R 1 and R 2 Each of these is an independently chain-like monovalent hydrocarbon group, and R 1 and R 2 The total number of carbon atoms is 4 to 16, R 3 is an alkylene group having 1 to 4 carbon atoms, and p is R 3 This is a number between 1 and 20 that indicates the average number of repetitions of O. <2> The ratio of the total content of components (A) and (B) to the content of component (C), [(A)+(B)] / (C), is between 1 and 20. <1> A liquid detergent composition for textile products as described above. <3> The total amount of surfactant is 35 to 70% by mass of the total mass of the liquid detergent composition for textile products. <1> or <2> A liquid detergent composition for textile products as described above. <4> Further containing organic solvents <1> ~ <3> A liquid detergent composition for textile products as described in any of the following. <5> This is for washing machines equipped with an automatic detergent dispenser. <1> ~ <4> A liquid detergent composition for textile products as described in any of the following. [Effects of the Invention]

[0007] According to the present invention, a concentrated liquid detergent composition for textile products is available that exhibits excellent cleaning power, low-temperature stability, and high-temperature stability. [Modes for carrying out the invention]

[0008] A liquid detergent composition for textile products according to one embodiment of the present invention (hereinafter also simply referred to as "liquid detergent composition") contains component (A), component (B), component (C), and water.

[0009] <(A) component> Component (A) is a nonionic surfactant represented by the following formula (a1) (hereinafter also referred to as "nonionic surfactant (a1)"). (A) Component may be used alone or in combination of two or more types.

[0010] R 11 -O-[(EO) s / ( A 11 O) t ]-(EO) u -R 12 ...(a1) [In formula (a1), R 11 R is a straight-chain hydrocarbon group having 8 to 22 carbon atoms. 12 A is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s is a number from 3 to 25 indicating the average repeating number of EO, and A 11 O is at least one of an oxypropylene group and an oxybutylene group, and t is A 11 u is a number between 0 and 6 representing the average number of repetitions of O, and u is a number between 0 and 20 representing the average number of repetitions of EO.

[0011] In formula (a1), R 11 The number of carbon atoms in the hydrocarbon group is 8 to 22, preferably 10 to 18, and more preferably 12 to 18. 11 The hydrocarbon group is linear. 11 The hydrocarbon group may or may not have an unsaturated bond. -O- binding R 11 The carbon atom can be either a primary or secondary carbon atom. R bonded to -O- 11 If the carbon atom is a primary carbon atom, then -O- is R 11 It bonds to the carbon atom located at the end of the straight chain among the carbon atoms that make up the molecule. 11 If the carbon atom is a secondary carbon atom, then -O- is R 11 It bonds to carbon atoms in the chain that are not at the ends of the straight chain.

[0012] R 12 If it is an alkyl group, the number of carbon atoms is 1 to 6, and preferably 1 to 3. R 12If the group is an alkenyl group, the number of carbon atoms is 2 to 6, and preferably 2 to 3. R 12 A hydrogen atom is particularly preferred.

[0013] s is 3 to 25, preferably 5 to 25, more preferably 7 to 20, even more preferably 7 to 18, and particularly preferably 7 to 15. t is between 0 and 6, preferably between 0 and 3, and more preferably 0. u is between 0 and 20, preferably between 0 and 15, and more preferably between 0 and 10. s+u is preferably 3 to 30, more preferably 5 to 25, even more preferably 5 to 20, particularly preferably 7 to 20, and most preferably 7 to 15.

[0014] If t is not 0, that is, if the nonionic surfactant (a1) has EO and an oxypropylene group (hereinafter also referred to as "PO"), EO and an oxybutylene group (hereinafter also referred to as "BO"), or EO, ​​PO and BO, then [(EO) s / ( A 11 O) t In [ ], there are no particular restrictions on the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO. They may be arranged in blocks or randomly. Also, if EO is "R 11 -O-" may be added, or PO or BO may be added to "R 11 It may be combined with "-O-". If t is not 0, the nonionic surfactant (a1) preferably has EO and PO, or EO and BO.

[0015] <(B) component> Component (B) is a Garbet alcohol-type nonionic surfactant represented by the following formula (b1). (B) Component may be used alone or in combination of two or more types.

[0016] R 1 -CHR 2 -CH2-O-(R 3 O) p -H ···(b1) [In formula (b1), R 1 and R 2 Each of these is an independently chain-like monovalent hydrocarbon group, and R 1 and R 2 The total number of carbon atoms is 4 to 16, R 3 is a hydrocarbon group having 1 to 3 carbon atoms, and p is R 3 This is a number between 1 and 20 that indicates the average number of repetitions of O.

[0017] In formula (b1), R 1 and R 2 Each of these is an independent, chain-like monovalent hydrocarbon group. 1 and R 2 The total number of carbon atoms is 4 to 16, preferably 4 to 14, more preferably 6 to 14, and even more preferably 6 to 12. R 1 and R 2 The monovalent hydrocarbon group in the chain may be linear or branched. The monovalent hydrocarbon group may or may not have an unsaturated bond. The monovalent hydrocarbon group is preferably an alkyl group or an alkenyl group. R 1 The number of carbon atoms and R 2 If the number of carbon atoms is different, R 1 and R 2 The carbon atom with the fewer carbon atoms is preferably 2 to 7, and the carbon atom with the more carbon atoms is preferably 4 to 14.

[0018] R in equation (b1) 1 -CHR 2 -CH2- is Garbet alcohol (R 1 -CHR 2 It is a residue obtained by removing one hydroxyl group from (-CH2-OH). Guerbet alcohols are alcohols obtained by subjecting a starting alcohol to the Guerbet reaction. In the Guerbet reaction, two molecules of the starting alcohol condense to form a dimer. For example, if R is used as the starting alcohol... 4 -CH2-CH2-OH (where R 4 It is a chain-like monovalent hydrocarbon group having 1 to 7 carbon atoms. ) Using this, R4 -CH2-CH2-CHR 4 A Garbet alcohol represented by -CH2-OH is obtained. The two starting alcohol molecules that form the Garbet alcohol may be different. If the two starting alcohol molecules are the same, R 1 The number of carbon atoms and R 2 The difference in the number of carbon atoms is 2. R 1 -CH(R 2 Specific examples of )-CH2- include the 2-ethylhexyl group and the 2-propylheptyl group.

[0019] p is between 1 and 20, preferably 3 to 14, more preferably 4 to 12, and most preferably 5 to 10. R 3 R is an alkylene group having 1 to 4 carbon atoms. 3 As such, an alkylene group having 2 to 3 carbon atoms is preferred, and an alkylene group having 2 carbon atoms is more preferred. That is, R 3 As for O, at least one of EO and PO is preferred, and EO is more preferred. (R 3 O) p EO and PO may be mixed together. When EO and PO are mixed, they may be mixed randomly or in a block-like manner.

[0020] (B)Specific examples of component include 2-ethylhexyl alcohol alcohols such as 2-ethylhexyl alcohol ethoxylate, and 2-propylheptyl alcohol alkoxylates such as 2-propylheptyl alcohol ethoxylate. Among these, 2-propylheptyl alcohol ethoxylate is preferred. The average number of moles of ethylene oxide added is preferably 3 to 14, more preferably 4 to 12, and most preferably 5 to 10.

[0021] (B) Component may be a commercially available product or one manufactured by a known manufacturing method. For example, commercially available 2-ethylhexyl alcohol ethoxylate products include Newcol 1008 manufactured by Nippon Emulsifier Co., Ltd. Commercially available 2-propylheptyl alcohol ethoxylate products include Lutensol XP-100, Lutensol XP-80, and Lutensol XP-50 manufactured by BASF. (B) As a method for producing component (B), for example, one method is to add 1 to 20 moles of alkylene oxide to a Garbet alcohol having 8 to 18 carbon atoms. The Garbet alcohol may be one produced by subjecting the aforementioned raw material alcohol to the Garbet reaction, or a commercially available product may be used. For example, 2-propylheptyl alcohol can be obtained by subjecting pentanol to the Garbet reaction.

[0022] <(C) component> Component (C) is a non-soap-based anionic surfactant. "Non-soap anionic surfactants" are anionic surfactants that do not contain higher fatty acids or their salts (so-called soaps). Higher fatty acids are typically fatty acids with 8 to 22 carbon atoms. (C) Component may be used alone or in combination of two or more types.

[0023] (C) Examples of component (C) include carboxylic acid-type anionic surfactants such as linear alkylbenzene sulfonic acid or its salt (LAS), α-olefin sulfonic acid or its salt (AOS), linear or branched alkyl sulfate ester or its salt (AS), polyoxyalkylene alkyl (or alkenyl) ether sulfate ester or its salt (AES), alkane sulfonic acid or its salt, α-sulfo fatty acid ester or its salt, internal olefin sulfonic acid or its salt (IOS), hydroxyalkane sulfonic acid or its salt (HAS), 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. Examples of salt forms of these anionic surfactants include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.).

[0024] (C) Component is preferably LAS, AOS, AS, or AES, and among these, LAS and AES are more preferred from the viewpoint of further enhancing cleaning power. Component (C) preferably contains at least AES or LAS, and more preferably contains both LAS and AES. The inclusion of LAS tends to improve low-temperature stability, and the inclusion of AES tends to improve sebum cleansing power. As the LAS, those with a linear alkyl group having 8 to 22 carbon atoms are preferred.

[0025] AES is expressed by the following formula (c1). R 17 -O-[(EO) m (PO) n ]-SO3 - M+ ···(c1) [In formula (c1), R 17 is a linear or branched alkyl group having 8 to 20 carbon atoms or a linear or branched alkenyl group having 8 to 20 carbon atoms. EO is an oxyethylene group. PO is an oxypropylene group. m is a number of 0.1 or more representing the average repeating number of EO. n is a number of 0 to 6 representing the average repeating number of PO. M + is a counter cation.]

[0026] In formula (c1), R 17 preferably has 10 to 20 carbon atoms in the alkyl group or alkenyl group, more preferably 12 to 14 carbon atoms. R 17 is preferably a linear alkyl group having 10 to 20 carbon atoms, more preferably a linear alkyl group having 12 to 14 carbon atoms. Specifically, a dodecyl group, a tridecyl group, a tetradecyl group, etc. can be mentioned.

[0027] m is preferably 0.1 to 5, more preferably 0.1 to 3, still more preferably 0.5 to 2, particularly preferably 0.5 to 1.5. n is 0 to 6, preferably 0 to 3, more preferably 0. m + n is 0.1 or more, preferably 0.5 to 10, more preferably 1 to 5.

[0028] When n is not 0, that is, when AES has EO and PO, there is no particular limitation on the distribution (sequence order) of EO and PO in [(EO) m / (PO) n . These may be arranged in a block form or in a random form. Also, EO may be bonded to "R 17 -O-", or PO may be bonded to "R 17 -O-". As a method of arranging EO and PO in a block form, for example, there are methods such as introducing propylene oxide after introducing ethylene oxide, introducing ethylene oxide after introducing propylene oxide, introducing propylene oxide after introducing ethylene oxide, and further introducing ethylene oxide.

[0029] M + For example, Na + , K + , H + can be mentioned.

[0030] As AES, from the viewpoint of sebum detergency, R 17 is a linear or branched alkyl group having 10 to 20 carbon atoms or a linear or branched alkenyl group having 10 to 20 carbon atoms, and it is preferable that m + n is 1 to 5. In AES, from the viewpoint of storage stability, the ratio of the compound where m = 0 and n = 0 in the above formula (c1) is preferably 35 to 55% by mass with respect to the total mass of the compound represented by the formula (c1).

[0031] <Water> Water is not particularly limited, and purified water, distilled water, ion-exchanged water, tap water, etc. can be mentioned. These waters may be used alone or in combination of two or more.

[0032] <Organic solvent> The liquid detergent composition may further contain an organic solvent. By the liquid detergent composition containing an organic solvent, the low-temperature stability of the liquid detergent composition and the effect of reducing the weight loss rate at high temperatures can be further enhanced. Examples of the organic solvent include a compound represented by the following formula (1) (hereinafter also referred to as "compound (1)"), glycol ether, alcohols other than compound (1) and glycol ether, ketones, esters other than compound (1), etc. Among them, compound (1), glycol ether, and alcohols other than compound (1) and glycol ether are preferable.

[0033] CH3O-CR 31 (CH3)-CHR 32 -CHR 33 -OR 34 ...(1) [In formula (1), R 31 ~R 33 Each is independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R 34 [This is a hydrogen atom or an acetyl group.]

[0034] In formula (1), R 31 ~R 33 It is preferable that all of them are hydrogen atoms, or that one is an alkyl group and the other two are hydrogen atoms. That is, R 31 ~R 33 Preferably, two or more of them are hydrogen atoms. 31 ~R 33 If two or more of these atoms are hydrogen atoms, the liquid stability of the liquid detergent composition at low temperatures can be further improved. R 31 ~R 33 If any of them is an alkyl group, the number of carbon atoms in the alkyl group is preferably 1 to 2, and more preferably 1. 31 ~R 33 If the number of carbon atoms is within the above numerical range, the liquid stability of the liquid detergent composition at low temperatures can be further improved. R 34 From the viewpoint of further improving the liquid stability of the liquid detergent composition at low temperatures, hydrogen atoms are preferred.

[0035] Examples of compound (1) include 3-methoxybutanol, 3-methoxy-3-methylbutanol, 3-methoxy-3-ethylbutanol, 3-methoxy-3-propylbutanol, 3-methoxy-2-methylbutanol, 3-methoxy-2-ethylbutanol, 3-methoxy-2-propylbutanol, 3-methoxy-1-methylbutanol, 3-methoxy-1-ethylbutanol, 3-methoxy-1-propylbutanol, etc., where R in formula (1) 34Those in formula (1) where R is a hydrogen atom; 3-methoxybutyl acetate, 3-methoxy-3-methylbutyl acetate, 3-methoxy-3-ethylbutyl acetate, 3-methoxy-3-propylbutyl acetate, 3-methoxy-2-methylbutyl acetate, 3-methoxy-2-ethylbutyl acetate, 3-methoxy-2-propylbutyl acetate, 3-methoxy-1-methylbutyl acetate, 3-methoxy-1-ethylbutyl acetate, 3-methoxy-1-propylbutyl acetate, etc. 34 Examples include those in which the group is an acetyl group.

[0036] Examples of glycol ethers include compounds represented by the following formula (2) (hereinafter also referred to as "compound (2)"). R 35 -(OR 36 ) w OH...(2) [In formula (2), R 35 R is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a phenyl group. 36 is an alkylene group with 2 to 4 carbon atoms, and w is OR 36 This number, ranging from 1 to 30,000, represents the average number of repeats (i.e., the average number of moles added of alkylene oxides with 2 to 4 carbon atoms).

[0037] Examples of compound (2) include ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, and diethylene glycol monophenyl ether. In equation (2), R 35Examples of compounds in which the element is a hydrogen atom include polyethylene glycol. Preferably, the polyethylene glycol has a w of 5 or more in formula (2). Furthermore, the weight-average molecular weight of polyethylene glycol is preferably 200 to 1,320,000, more preferably 200 to 5,000, even more preferably 200 to 2,000, and particularly preferably 200 to 1,000. Among these, polyethylene glycol with a weight-average molecular weight of 1,000 (w of 22 to 24) is particularly preferred. Note that the weight-average molecular weight of polyethylene glycol is calculated based on a calibration curve for polyethylene glycol, using values ​​measured by GPC with methanol as the solvent.

[0038] Examples of alcohols other than compound (1) and glycol ethers include 2-isobutyl-2-methyl-1,3-dioxolane-4-methanol, monohydric alcohols having 2 to 4 carbon atoms, and polyhydric alcohols having 2 to 4 carbon atoms. Examples of monohydric alcohols with 2 to 4 carbon atoms include ethanol, 1-propanol, 2-propanol, and 1-butanol. Examples of polyhydric alcohols with 2 to 4 carbon atoms include ethylene glycol, propylene glycol, butylene glycol, and glycerin.

[0039] Among these organic solvents, ethanol, ethylene glycol, propylene glycol, diethylene glycol monobutyl ether, and polyethylene glycol are preferred due to their excellent fluidity, mild odor, and ease of obtaining raw materials, while ethanol, ethylene glycol, propylene glycol, polyethylene glycol, and 3-methoxy-3-methylbutanol are more preferred. These organic solvents may be used individually or in combination of two or more.

[0040] When combining two or more organic solvents, it is preferable that the mixture contains compound (1), more preferably a combination of compound (1) and a monohydric alcohol, and more preferably a combination of compound (1) and compound (2), even more preferably a combination of compound (1) and a monohydric alcohol, and particularly preferably a combination of 3-methoxy-3-methylbutanol and polyethylene glycol. If the organic solvents are in the above combination, the liquid stability of the liquid detergent composition at low temperatures can be improved while the effect of reducing the weight loss rate at high temperatures can be enhanced.

[0041] When compound (1) is combined with other organic solvents, the mass ratio expressed as compound (1) / other organic solvent is preferably 0.1 to 10, more preferably 0.5 to 8, and even more preferably 1 to 6. If the above mass ratio is within the above range, the liquid stability of the liquid detergent composition at low temperatures can be improved while the effect of reducing the weight loss rate at high temperatures can be enhanced.

[0042] <Enzyme> The liquid detergent composition may further contain enzymes. Examples of enzymes include proteases, amylases, lipases, cellulases, mannanases, and pectinases. Enzymes may be used individually or in combination of two or more. These enzymes are generally commercially available as enzyme-containing preparations (enzyme preparations). They are typically incorporated in the form of enzyme preparations when preparing liquid detergent compositions.

[0043] As for the protease, a protease having serine, histidine, and aspartic acid in its molecule, such as a serine protease, is preferred. Examples of protease-containing preparations (protease preparations) include, for example, the following products available from Novozymes: Savinase 16L, Savinase Ultra 16L, Savinase Ultra 16XL, 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, Coronase Evity 48L, and Progress Uno 101L; and the following products available from Genencor: Purafect L, Purafect OX, and Properase L.

[0044] Examples of amylase-containing preparations (amylase preparations) include the following products available from Novozymes: Terhamyl 300L, Terhamyl Ultra 300L, Duramyl 300L, Stainzyme 12L, Stainzyme Plus 12L, and Amplify Prime; Maxamyl from Genencore; Pullulanase Amano from Amano Enzyme Co., Ltd.; and DB-250 from Seikagaku Kogyo Co., Ltd.

[0045] Examples of lipase-containing preparations (lipase preparations) include Lipex 100L and Lipolase 100L, both available from Novozymes.

[0046] Examples of cellulase-containing preparations (cellulase preparations) include the brand names Carezyme 4500L, Carezyme Premium 4500L, Endolase 5000L, and Celluclean 4500T, all available from Novozymes.

[0047] Examples of preparations containing mannanase (mannanase preparations) include the product names Mannaway 4.0L and Mannaway 200L, which are available from Novozymes.

[0048] Examples of preparations containing pectinase (pectinase preparations) include Pectawash, Pectaway, and XPect, which are available from Novozymes. These enzyme preparations may be used individually or in combination of two or more.

[0049] <Other ingredients> The liquid detergent composition may contain other components besides component (A), component (B), component (C), water, organic solvent, and enzyme, as long as it does not impair the effects of the present invention. Other components include those commonly used in liquid detergents, such as nonionic surfactants other than components (A) and (B), anionic surfactants other than component (C) (e.g., higher fatty acids and their salts), cationic surfactants, amphoteric surfactants, chelating agents, hydrotropes (e.g., aromatic sulfonic acids and their salts), detergent builders, stabilizers, alkaline agents (e.g., alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine), metal ion scavengers, texture enhancers such as silicones, preservatives, fluorescent agents, color transfer inhibitors, pearlescent agents, antioxidants, antibacterial agents, general-purpose dyes or pigments as colorants, emulsifiers, fragrances, pH adjusters, etc.

[0050] <Content> (A) The content of component (A) is preferably 20 to 60% by mass, more preferably 25 to 50% by mass, and most preferably 30 to 40% by mass, relative to the total mass of the liquid detergent composition. If the content of component (A) is above the lower limit of the above range, the sebum cleansing power is better, and if it is below the upper limit, the weight loss rate at high temperatures is further reduced.

[0051] The content of component (B) is preferably 1 to 20% by mass, more preferably 2 to 15% by mass, even more preferably 3 to 10% by mass, and most preferably 3 to 8% by mass, based on the total mass of the liquid detergent composition. When the content of component (B) is above the lower limit of the above range, low-temperature stability is better, and when it is below the upper limit, sebum cleansing power is better.

[0052] In a liquid detergent composition, the mass ratio of the content of component (A) to the content of component (B), (A) / (B), is 3 or more, more preferably 3 to 30, even more preferably 4 to 20, and most preferably 5 to 10. If (A) / (B) is above the lower limit of the above range, low-temperature stability is excellent, and if it is below the upper limit, the weight loss rate at high temperatures is further reduced.

[0053] The content of component (C) is preferably 2 to 40% by mass, more preferably 3 to 30% by mass, even more preferably 4 to 20% by mass, and most preferably 5 to 20% by mass, based on the total mass of the liquid detergent composition. If the content of component (C) is above the lower limit of the above range, the low-temperature stability is better, and if it is below the upper limit, the weight loss rate at high temperatures is further reduced.

[0054] In a liquid detergent composition, the mass ratio of the content of component (A) to the content of component (C), (A) / (C), is preferably 0.1 or higher, more preferably 0.3 to 15, and most preferably 1 to 8. When (A) / (C) is above the lower limit of the above range, the sebum cleansing power is better, and when it is below the upper limit, the low-temperature stability at high temperatures is better.

[0055] In a liquid detergent composition, the mass ratio of the content of component (B) to the content of component (C), (B) / (C), is preferably 0.1 or higher, more preferably 0.1 to 5, even more preferably 0.2 to 3, and most preferably 0.3 to 1. When (B) / (C) is above the lower limit of the above range, low-temperature stability is better, and when it is below the upper limit, the weight loss rate at high temperatures is further reduced.

[0056] In a liquid detergent composition, the mass ratio of the total content of components (A) and (B) to the content of component (C), [(A)+(B)] / (C), is preferably 0.1 or higher, more preferably 0.5 to 20, even more preferably 1.5 to 10, and most preferably 2.5 to 7. When [(A)+(B)] / (C) is above the lower limit of the above range, the sebum cleansing power is better, and when it is below the upper limit, the low-temperature stability is better.

[0057] The water content is 40% by mass or less, preferably 38% by mass or less, and more preferably 35% by mass or less, relative to the total mass of the liquid detergent composition. Furthermore, the water content is preferably 10% by mass or more, more preferably 15% by mass or more, and even more preferably 20% by mass or more, relative to the total mass of the liquid detergent composition. When the water content is below the upper limit of the above range, the weight loss rate at high temperatures is reduced. Furthermore, when the water content is above the lower limit of the above range, low-temperature stability is improved. The above lower and upper limits can be combined as appropriate. For example, the water content may be 10-40% by mass, 15-38% by mass, or 20-35% by mass, based on the total mass of the liquid detergent composition.

[0058] In a liquid detergent composition, the water / (B) ratio, which represents the mass ratio of the water content to the content of component (B), is preferably 1 or more, more preferably 1.5 to 20, even more preferably 2 to 15, and most preferably 3 to 10. When the water / B ratio is above the lower limit of the above range, low-temperature stability is better, and when it is below the upper limit, sebum cleansing power is better.

[0059] The total amount of surfactant contained in the liquid detergent composition is preferably 30% by mass or more, more preferably 35-70% by mass, even more preferably 40-60% by mass, and most preferably 45-55% by mass, based on the total mass of the liquid detergent composition. If the total amount of surfactant is above the lower limit of the above range, the sebum cleansing power is better, and if it is below the upper limit, the low-temperature stability is better. The total amount of surfactants is the sum of the contents of component (A), component (B), component (C), and other surfactants.

[0060] When a liquid detergent composition contains an organic solvent, the content of the organic solvent is preferably 3% by mass or more, more preferably 5% by mass or more, preferably 20% by mass or less, more preferably 15% by mass or less, and most preferably 12% by mass or less, based on the total mass of the liquid detergent composition. When the content of the organic solvent is above the lower limit of the above range, the low-temperature stability is better, and when it is below the upper limit, the weight loss rate at high temperatures is further reduced. The above lower and upper limits can be combined as appropriate. For example, the content of the organic solvent may be 3 to 20% by mass, 3 to 15% by mass, 3 to 12% by mass, or 5 to 12% by mass, based on the total mass of the liquid detergent composition.

[0061] When a liquid detergent composition contains an enzyme, the enzyme content is preferably 0.1 to 10% by mass, more preferably 0.5 to 7% by mass, even more preferably 1 to 5%, and most preferably 2 to 4% by mass, based on the total mass of the liquid detergent composition. If the enzyme content is above the lower limit of the above range, the cleaning power against sebum and proteins is better, and if it is below the upper limit, the low-temperature stability is better. Furthermore, when enzymes are included in the form of enzyme preparations, the enzyme content refers to the mass of the enzyme preparation. Furthermore, the total content of each component in the liquid detergent composition shall not exceed 100% by mass.

[0062] <Physical properties> The pH of the liquid detergent composition at 25°C is preferably 6 to 9, more preferably 6.5 to 8.5, and even more preferably 7 to 8. The pH of the liquid detergent composition can be adjusted as needed by adding a pH adjuster. pH is the value measured using a pH meter (product name: HM-30G, manufactured by Toa DKK Co., Ltd.) with the sample temperature set at 25°C.

[0063] <Manufacturing method> The liquid detergent composition of this embodiment can be manufactured in accordance with conventionally known methods for manufacturing liquid detergent compositions. For example, it can be manufactured by adding each component except the pH adjuster to a portion of water and mixing, then adding the pH adjuster as needed to adjust the pH, and finally adding the remaining water to make the total volume 100% by mass. The obtained liquid detergent composition is preferably packaged in containers such as bottles, squeeze containers, or pouches to produce a liquid detergent product in a container.

[0064] One form of container for a liquid detergent product can be a plastic container comprising a plastic container body and a plastic cap. The container body has an opening, and the cap is configured to be detachably attached to the opening. The material of the container body is preferably a transparent or semi-transparent synthetic resin such as polyethylene resin, polypropylene resin, or polyethylene terephthalate (PET). A possible molding method for the container body is, for example, biaxial stretch blow molding. The cap is preferably a cap with a measuring cylinder portion that can measure liquid detergent (hereinafter also referred to as a measuring cap). The material of the cap is preferably a transparent or semi-transparent synthetic resin such as polyethylene resin, polypropylene resin, or polyethylene terephthalate (PET). The molding method for the cap is injection molding. The shape of the measuring cap can be a known shape. For example, it can be a shape such as that described in Japanese Patent Application Publication No. 2020-200095, which has a measuring cylinder portion extending in the axial direction and a tongue-shaped portion provided at the axial end of the measuring cylinder portion in a part of the circumferential direction centered on the axis and protruding in the axial direction.

[0065] <How to use> Methods of using the liquid detergent composition include, for example, putting the liquid detergent composition into the liquid detergent composition dispenser of a washing machine and then operating the washing machine; adding the liquid 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 liquid detergent composition in water beforehand; and applying the liquid 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.

[0066] Furthermore, it is preferable to use a washing machine equipped with an automatic detergent dispensing function, which has become practical in recent years. The automatic detergent dispensing function automatically dispenses detergent from a detergent tank into the washing tub via a dispensing pipe. A measuring device, such as a syringe pump, is installed along the dispensing pipe, allowing a set amount of detergent, depending on the amount of laundry, to be transferred from the tank to the washing tub.

[0067] Using the automatic detergent dispensing function not only eliminates the hassle of measuring, but also prevents liquid detergent from getting on your hands or spilling and staining the washing machine or surrounding area during measurement. Furthermore, because the liquid detergent composition of this embodiment is concentrated, the amount used per wash may be very small, around 10 mL. Such small amounts of liquid detergent composition are difficult to measure accurately with a cap or the like, and the amount of liquid tends to be either insufficient or excessive. Using an automatic detergent dispensing function is preferable because it allows for accurate measurement of even small amounts of liquid detergent composition, making it easier to achieve sufficient cleaning power and avoiding waste due to overuse.

[0068] 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 liquid cleaning agent composition, making it easier to achieve sufficient cleaning power and avoiding waste due to overuse. Some automatic dispensers utilize infrared sensors or other technologies to dispense liquids automatically without requiring the user to touch any switches. Using such an automatic dispenser allows users to measure out liquid detergent simply by holding a container in one hand, significantly reducing the burden on the user.

[0069] Furthermore, when using an automatic dispenser, it is preferable to receive the liquid 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 liquid 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.

[0070] 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 liquid detergent composition dissolved in water, it is preferable to dilute it, for example, 5 to 5000 times (by volume). The bath ratio (mass of washing solution / mass of items to be washed), which is the amount of water per unit mass of items being washed, is preferably 5 or higher for drum-type washing machines and 10 or higher for top-loading washing machines. The amount of liquid detergent composition used in the washing process is preferably such that the ratio of the mass of the item to be washed (amount of cloth) to the mass of the liquid detergent composition is 10 to 500, more preferably 10 to 300, and even more preferably 10 to 100. The liquid detergent composition is suitable as a detergent composition for textile products.

[0071] The liquid detergent composition of this embodiment contains components (A), (B), and (C) as surfactants, and therefore exhibits excellent cleaning power, high-temperature stability, and low-temperature stability. Furthermore, it is a concentrated liquid detergent composition with a water content of 40% by mass or less, and can exert cleaning power with a small amount of use. (B) Component is hydrophobic (R 1 -CH(R 2 The structure of (B) is bulky. This makes it easier to disrupt the arrangement of surfactants, especially in concentrated liquid detergent compositions with low water content, and makes solidification less likely when the liquid detergent composition is placed at low temperatures compared to general branched nonionic surfactants that are not of the Garbet alcohol type. In addition, because the hydrophobic structure of component (B) is bulky, when component (B) is adsorbed onto hydrophobic substances such as sebum, the total amount of surfactants lined up at the dirt interface is reduced, while the ability to reduce interfacial tension is increased, resulting in high sebum cleaning power.

[0072] Washing machines equipped with an automatic detergent dispensing function tend to experience a rise in temperature inside the detergent tank during the drying cycle. Furthermore, because the detergent is transferred by suction using a syringe pump or similar device, the tank is not completely sealed. As shown in the embodiments described later, storing liquid detergent in the tank of a washing machine equipped with an automatic detergent dispensing function tends to result in a decrease in weight. The liquid detergent composition of this embodiment has excellent high-temperature stability, making it suitable as a liquid detergent for automatic detergent dispensing, to be stored and used in the tank of a washing machine equipped with an automatic detergent dispensing function. In addition, because it is a concentrated liquid detergent that can exhibit high cleaning power with a small amount of use, it is also suitable as a liquid detergent for automatic detergent dispensing because it allows for a large number of washes using the capacity of the washing machine's tank. [Examples]

[0073] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following description. The raw materials used in each example are as follows:

[0074] (Raw materials used) <(A) component> • Linear AE(15EO): Polyoxyethylene alkyl ether (manufactured by Lion Corporation, trade name "LMAO-90"), obtained by adding 15 moles of ethylene oxide to 1 mole of primary alcohol (mass ratio of C12 alcohol / C14 alcohol = 7 / 3). In formula (a1), R11 This consists of a C12 alkyl group and a C14 alkyl group (C14) (mass ratio of C12:C14 = 70:30), R 12 R that bonds to the hydrogen atom and -O- 11 A compound in which the carbon atoms are primary carbon atoms, with s = 15, t = 0, and u = 0. • Linear AE(12EO): Polyoxyethylene alkyl ether (manufactured by Lion Corporation, trade name "LMAL-90"), obtained by adding 12 moles of ethylene oxide to 1 mole of primary alcohol (mass ratio of C12 alcohol / C14 alcohol = 7 / 3). In formula (a1), R 11 This consists of a C12 alkyl group and a C14 alkyl group (C14) (mass ratio of C12:C14 = 70:30), R 12 R that bonds to the hydrogen atom and -O- 11 A compound in which the carbon atoms are primary carbon atoms, with s = 12, t = 0, and u = 0. • Linear AE(9EO): A primary alcohol (mass ratio of C12 alcohol / C14 alcohol = 7 / 3) to which 9 moles of ethylene oxide are added. In formula (a1), R 11 This consists of a C12 alkyl group and a C14 alkyl group (C14) (mass ratio of C12:C14 = 70:30), R 12 R that bonds to the hydrogen atom and -O- 11 A compound in which the carbon atoms are primary carbon atoms, with s = 9, t = 0, and u = 0. • Linear AE(7EO): A primary alcohol (mass ratio of C12 alcohol / C14 alcohol = 7 / 3) to which 7 moles of ethylene oxide are added. In formula (a1), R 11 This consists of a C12 alkyl group and a C14 alkyl group (C14) (mass ratio of C12:C14 = 70:30), R 12 R that bonds to the hydrogen atom and -O- 11 A compound in which the carbon atoms are primary carbon atoms, with s = 7, t = 0, and u = 0.

[0075] <(B) Components and their comparative components> • Primary branched AE (10EO): A C10 alcohol obtained by subjecting pentanol to a Garbet reaction, to which 10 moles of ethylene oxide are added (Lutensol XP100, manufactured by BASF). In formula (b1), R 1 is an n-pentyl group, R 2 is an n-propyl group, R 3 A compound in which O is EO and p is 10. • Primary branched AE (5EO): A C10 alcohol obtained by subjecting pentanol to a Garbet reaction, to which 5 moles of ethylene oxide are added (Lutensol XP50, manufactured by BASF). In formula (b1), R 1 is an n-pentyl group, R 2 is an n-propyl group, R 3 A compound in which O is EO and p is 5. • Primary branched AE (8AO): A C10 alcohol obtained by subjecting pentanol to a Garbet reaction, to which 8 moles of ethylene oxide and propylene oxide are added (BASF, trade name Lutensol XL80, BASF). In formula (b1), R 1 is an n-pentyl group, R 2 is an n-propyl group, R 3 A compound in which O is EO or PO and p is 8. • Comparative component 1: Primary branched AE (7EO) that is not of the Garbet alcohol type, polyoxyethylene alkyl ether (a carbon-13 alcohol to which 7 moles of ethylene oxide are added. In formula (a1), R 11 R is a branched alkyl group with 13 carbon atoms, and is bonded to the oxygen atom. 11 The carbon atoms are primary carbon atoms, R 12 A compound in which is a hydrogen atom, s is 7, t is 0, and u is 0. Synthesized by the following synthesis method. Synthesis method of comparative component 1: 400 g of Sasol's EXXAL® 13 and 3.33 g of a 30% by mass NaOH aqueous solution were placed in a pressure-resistant reaction vessel, and the inside of the reaction vessel was purged with nitrogen. Next, the mixture was dehydrated at a temperature of 100°C and a pressure of 2.0 kPa or less for 30 minutes, and then the temperature was raised to 160°C. Then, while stirring the reaction mixture, 1145 g of ethylene oxide (gaseous) was gradually added to the reaction mixture. At this time, the ethylene oxide was added using a blowpipe while adjusting the addition rate so that the reaction temperature did not exceed 180°C. After the addition of ethylene oxide was completed, the mixture was aged at a temperature of 180°C and a pressure of 0.3 MPa or less for 30 minutes, and then the unreacted ethylene oxide was removed by distillation at a temperature of 180°C and a pressure of 6.0 kPa or less for 10 minutes. Next, after cooling the temperature to 100°C or less, 70% by mass p-toluenesulfonic acid was added to neutralize the 1% by mass aqueous solution of the reactants so that the pH was approximately 7, and comparative component 1 was obtained.

[0076] <(C) component> • LAS: A linear alkylbenzene sulfonate having an alkyl group with 10 to 14 carbon atoms, manufactured by Lion Corporation, trade name "Lypon (registered trademark) LH-200". AES: Polyoxyalkylene alkyl ether sulfate (a mixture of polyoxyethylene lauryl ether sodium sulfate and polyoxyethylene myristyl ether sodium sulfate, with an average number of moles of EO added of 1). R in formula (c1) 17 The compound is a linear alkyl group having 12 and 14 carbon atoms, m is 1, n is 0, and M is sodium, with the proportion of the compound where m is 0 and n is 0 relative to the total AES being 43% by mass. It was synthesized by the following synthesis method.

[0077] AES synthesis method: In a 4L autoclave, 400g of Procter & Gamble's product name CO1270 alcohol (a mixture of C12 alcohol and C14 alcohol in a mass ratio of 75 / 25) and 0.8g of potassium hydroxide catalyst were charged as the raw material alcohol. After purging the autoclave with nitrogen, the temperature was increased while stirring. Next, 91 g of ethylene oxide was introduced and reacted while maintaining the temperature at 180°C and the pressure at 0.3 MPa or less to obtain an alcohol ethoxylate. Analysis using a gas chromatograph (Hewlett-Packard GC-5890), a flame ionization detector (FID), and an Ultra-1 column (HP, L25m × φ0.2mm × T0.11μm) revealed that the obtained alcohol ethoxylate had an average number of ethylene oxide additions of 1.0. Furthermore, the amount of compound without ethylene oxide addition was 43% by mass of the total obtained alcohol ethoxylate. Next, 237 g of the alcohol ethoxylate obtained above was placed in a 500 mL flask equipped with a stirrer, purged with nitrogen, and then 96 g of liquid anhydrous sulfuric acid (sulfan) was slowly added dropwise while maintaining the reaction temperature at 40°C. After the addition was complete, stirring was continued for 1 hour (sulfation reaction) to obtain polyoxyethylene alkyl ether sulfuric acid. Subsequently, this was neutralized with an aqueous sodium hydroxide solution to obtain AES.

[0078] <Water> • Water: Product name "Purified Water," manufactured by Kanto Chemical Co., Ltd.

[0079] <Organic solvents> • Polyethylene glycol: Manufactured by Junsei Chemical Co., Ltd., product name "PEG#1000", mass-average molecular weight 1000. • Solfit: 3-Methoxy-3-methylbutanol (manufactured by Kuraray Co., Ltd., trade name "Solfit"). • Butyl carbitol (manufactured by Nippon Emulsifier Co., Ltd., trade name "Diethylene glycol monobutyl ether"). • Propylene glycol (manufactured by Chuo Kasei Co., Ltd., product name "Propylene Glycol for Cosmetics").

[0080] <Enzyme> • Protease: Product name "ProgressUno", manufactured by Novozymes Japan. • Amylase: Product name "Amplify Prime100L", manufactured by Novozymes Japan.

[0081] <Other ingredients> • Coconut fatty acid: Soap (manufactured by NOF Corporation, product name "Coconut Fatty Acid"). • Sodium lactate: Enzyme stabilizer (manufactured by Musashino Chemical Research Institute, product name "Sodium Lactate 60E"). • Paratoluenesulfonic acid: Hydrotropic agent (manufactured by Kyowa Hakko Kirin Co., Ltd., product name "PTS acid"). • Citric acid: (Manufactured by Ipposha Oil & Fat Industry Co., Ltd., product name "Liquid Citric Acid"). • Dichrosan: 4,4'-dichloro-2-hydroxydiphenyl ether (manufactured by BASF, trade name "TINOSAN HP100"). • BIT: 1,2-Benzisothiazolin-3-one (manufactured by Clariant Japan, product name "NIPACIDE BIT20"). • BHT: Antioxidant, dibutylhydroxytoluene (manufactured by Sumitomo Chemical Co., Ltd., product name "SUMILZER BHT-R"). • Fragrance: Fragrance composition A as described in Tables 11-18 of Japanese Patent Publication No. 2002-146399. ·Pigment: Manufactured by Kinmi Kasei Co., Ltd., product name "Green No. 3". • Pigment: Manufactured by Milliken Japan LLC, product name "Brilliant Orange". • Pigment: Manufactured by Milliken Japan LLC, product name "Violet FL". • Pigment: Manufactured by Milliken Japan LLC, product name "Violet SH". • Pigment: Manufactured by Milliken Japan LLC, product name "SeaGreen CC". • Monoethanolamine: pH adjuster (manufactured by Nippon Shokubai Co., Ltd., product name "Monoethanolamine"). • NaOH: Sodium hydroxide, pH adjuster (manufactured by Toagosei Co., Ltd., product name "Sodium Hydroxide").

[0082] (Examples 1-18, Comparative Examples 1-6) Liquid detergent compositions were prepared according to the formulations shown in Tables 1-4. The formulations in the tables are expressed as percentages (mass%) of the total mass of the liquid detergent composition. Specifically, components (A), (B), and (C), water, and an organic solvent were added to a 500 mL beaker and thoroughly stirred with a magnetic stirrer (manufactured by MITAMURA KOGYO INC.). Then, the enzyme and other optional components were added and stirred thoroughly again. Next, NaOH was added to achieve a pH of 7.7 at 25°C, and then water was added to bring the total volume to 100% by mass to obtain a liquid detergent composition.

[0083] The obtained liquid detergent compositions were evaluated for their weight loss rate at high temperatures (high-temperature stability), low-temperature stability, and sebum cleansing power (cleaning power) using the evaluation methods described below. The evaluation results are shown in Tables 1 to 4. Note that the unit of the blending amount in the table is "mass %", indicating the amount on a pure content basis. Also, a blank space for the blending amount means that the ingredient is not included (bleeding amount 0 mass %). The "balance" in the amount of NaOH refers to the amount being necessary and sufficient to achieve a pH of 7.7 in the liquid detergent.

[0084] (Evaluation method) <Weight loss rate at high temperatures> In the case of storage container A, 20 mL of each example's liquid detergent composition was filled into a transparent glass bottle (wide-mouth standard bottle, PS-NO.6), and the bottle was left open and stored in a constant temperature bath at 40°C for 14 days. In the case of storage container B, 400 mL of each example of the liquid detergent composition was filled into the automatic detergent dispenser tank (part number BD-SX110CL-002, capacity: approximately 1000 mL, non-sealed container) attached to a Hitachi drum-type washing machine (BD-SX110E), and stored in a constant temperature bath at 40°C for 14 days with the lid closed. The percentage of weight loss before and after storage was calculated and evaluated according to the following evaluation criteria. "◎" and "○" were considered passing grades. [Evaluation Criteria] ◎: Weight reduction rate of 0% or more and less than 15%. ○: Weight reduction rate of 15% or more but less than 30%. △: Weight reduction rate of 30% or more but less than 45%. ×: Weight reduction rate of 45% or more.

[0085] <Low temperature stability> Each example of the liquid detergent composition was filled into a clear glass bottle (wide-mouth standard bottle, PS-NO.6), and the lid was closed to seal it. The bottles were then stored in a constant temperature bath at 5°C for 7 days. After storage, the appearance of the liquid detergent composition in the glass bottle was visually observed, and its low-temperature stability was evaluated according to the following evaluation criteria. "◎" and "○" were considered acceptable. [Evaluation Criteria] ◎: The liquid detergent composition inside the glass bottle is transparent, no precipitates or other substances are observed, and the liquid has high fluidity. ○: The liquid detergent composition inside the glass bottle is transparent, no precipitates or other substances are observed, and the liquid has low fluidity. △: The liquid detergent composition in the glass bottle appears cloudy, but the liquid is still fluid. ×: The liquid detergent composition in the glass bottle is cloudy and lacks fluidity.

[0086] <Sebum cleansing power> The soiled cloth was made by impregnating oil-based cloth (unstained cloth) with artificial stains (manufactured by the Japan Laundry Science Association), and then cutting it into 5cm x 5cm pieces. A Terg-O-tometer (manufactured by UNITED STATES TESTING) was used as the cleaning test device. As the cleaning solution, a liquid cleaning agent composition was added to 900 mL of water (25°C, 5°DH) to a concentration of 200 ppm and stirred for 30 seconds. The cleaning solution, 10 of the aforementioned soiled cloths, and the cleaned knitted cloth were placed in a cleaning tester, and the cloths were washed for 10 minutes at 120 rpm and 25°C, with a bath ratio of 20:1. Afterwards, they were transferred to a twin-tub washing machine (Mitsubishi Electric, product name "CW-C30A1-H1"), spun dry for 1 minute, rinsed in 30L of water (25°C, 5°DH) for 3 minutes, and air-dried. The reflectance of unstained cloth and soiled cloth before and after washing was measured using a colorimeter (manufactured by Nippon Denshoku Industries Co., Ltd., product name "SE7700"), and the washing rate (%) was calculated using the following formula (i). Cleaning rate (%) = (K / S of soiled cloth before cleaning - K / S of soiled cloth after cleaning) / (K / S of soiled cloth before cleaning - K / S of unsoiled cloth) × 100 ... (i) [In formula (i), K / S=(1-R / 100) 2 (2R / 100). R is reflectance (%).

[0087] The cleaning rate (%) was calculated for 10 soiled cloths, and the average value was determined. The average cleaning rate (%) was then evaluated according to the following evaluation criteria. "◎" and "○" were considered passing grades. [Evaluation Criteria] ◎: The average cleaning rate is between 80% and 100%. ○: The average cleaning rate is between 60% and 80%. △: The average cleaning rate is between 40% and 60%. ×: The average cleaning rate is between 0% and 40%.

[0088] [Table 1]

[0089] [Table 2]

[0090] [Table 3]

[0091] [Table 4]

[0092] As shown in the results in Tables 1-4, the liquid detergent compositions of Examples 1-18 exhibited high cleaning power with small amounts of use, and also showed good stability at both high and low temperatures. Note that Example 1 and Example 4 are examples where the liquid detergent composition is the same, but the storage container is different.

[0093] On the other hand, Comparative Example 1, which did not contain component (A), was inferior in high-temperature stability, low-temperature stability, and cleaning power. Comparative Example 2, which used the comparative component instead of component (B), exhibited inferior low-temperature stability. Comparative Example 3, which did not contain component (B), had poor low-temperature stability. Comparative Example 4, which did not contain component (C), had poor low-temperature stability. Comparative Example 5, which contained more than 40% by mass of water, exhibited inferior high-temperature stability and cleaning power. Comparative Example 6, where (A) / (B) was less than 3, had inferior cleaning power.

Claims

1. (A) Components: A nonionic surfactant represented by the following formula (a1), (B) Component: A Garbet alcohol-type nonionic surfactant represented by the following formula (b1), (C) Ingredients: Non-soap-based anionic surfactant, It contains water, The water content is 40% by mass or less of the total mass of the liquid detergent composition for textile products. A liquid detergent composition for textile products, wherein the mass ratio of the content of component (A) to the content of component (B), (A) / (B), is 3 or more. 2 １１ --[(5O) ｓ / (A １１ 9) ｔ )-(59) ｕ -2 １２ ・・・(11) [In formula (a1), R １１ is a linear hydrocarbon group having 8 to 22 carbon atoms, R １２ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s is a number from 3 to 25 indicating the average number of repeating units of EO, A １１ O is at least one of an oxypropylene group and an oxybutylene group, t is a number from 0 to 6 indicating the average number of repeating units of A １１ O, and u is a number from 0 to 20 indicating the average number of repeating units of EO.] R １ -CHR ２ -CH ２ -O-(R ３ O) ｐ -H・・・(｡1) [In formula (b1), R １ and R ２ Each of these is an independently chain-like monovalent hydrocarbon group, R １ and R ２ The total number of carbon atoms is 4 to 16, R ３ is an alkylene group having 1 to 4 carbon atoms, and p is R ３ This is a number between 1 and 20 that represents the average number of repetitions of O.

2. The liquid detergent composition for textile products according to claim 1, wherein the mass ratio of the total content of component (A) and component (B) to the content of component (C), [(A) + (B)] / (C), is 1 to 20.

3. The liquid detergent composition for textile products according to claim 1 or 2, wherein the total amount of surfactant is 35 to 70% by mass of the total mass of the liquid detergent composition for textile products.

4. A liquid detergent composition for textile products according to claim 1 or 2, further containing an organic solvent.

5. A liquid detergent composition for textile products according to claim 1 or 2, for use in a washing machine equipped with an automatic detergent dispensing function.

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