Liquid detergent composition for textile products

Abstract

To suppress yellowing while maintaining liquid stability in a liquid detergent composition for textile products.SOLUTION: The detergent composition comprises (A) a nonionic surfactant, (B) a non-soap-based anionic surfactant, (C) one or more selected from ethylenediaminedisuccinic acid, hydroxyiminodisuccinic acid, glutamic acid diacetic acid, diethylenetriaminepentaacetic acid and their salts, (D) an alkanolamine and (E) water in specific amounts and in a specific ratio.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a liquid detergent composition for textiles. [Background technology]

[0002] Liquid detergent compositions for textile products such as clothing contain surfactants. Concentrated liquid detergent compositions that can achieve cleaning effects with small amounts are in demand. Patent Document 1, for example, discloses a concentrated liquid detergent composition for textile products that contains an anionic surfactant and a nonionic surfactant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2024-64153 Summary of the Invention [Problem to be solved by the invention]

[0004] In concentrated liquid detergent compositions, alkanolamines are used as pH adjusters to prevent separation, precipitation, or viscosity increase over time (to enhance liquid stability). However, liquid detergent compositions containing alkanolamines may yellow over time, which may impair their aesthetic appearance. Therefore, an object of the present invention is to provide a liquid detergent composition for textile products that has good liquid stability and can suppress yellowing. [Means for solving the problem]

[0005] The present invention has the following aspects. <1> (A) component: a nonionic surfactant, (B) component: a non-soap anionic surfactant; (C) component: one or more selected from ethylenediaminedisuccinic acid, hydroxyiminodisuccinic acid, glutamic acid diacetic acid, diethylenetriaminepentaacetic acid, and salts thereof; (D) component: alkanolamine, (E) Component: Water, A liquid detergent composition for textiles, comprising: The component (B) contains one or more (b1) selected from linear alkylbenzene sulfonic acids and salts thereof, The content of the (b1) component is 3% by mass or more based on the total mass of the liquid detergent composition for textile products, The total amount of the component (A) and the component (B) is 20% by mass or more based on the total mass of the liquid detergent composition for textile products, the mass ratio of the component (A) to the component (B) is 0.7 or more, The content of the component (E) is 20% by mass or more based on the total mass of the liquid detergent composition for textile products. A liquid detergent composition for textiles. <2> the mass ratio represented by {the (B) component + the (D) component} / the (C) component is 3000 or less; <1> A liquid detergent composition for textile products according to claim 1. [Effects of the Invention]

[0006] The liquid detergent composition for textile products of the present invention has good liquid stability and can suppress yellowing. DETAILED DESCRIPTION OF THE INVENTION

[0007] (Liquid detergent composition for textile products) The liquid detergent composition for textile products of the present invention (hereinafter sometimes simply referred to as "detergent composition") is a liquid composition containing components (A) to (E).

[0008] <Component (A)> Component (A) is a nonionic surfactant. Examples of component (A) include polyoxyalkylene-type nonionic surfactants, alkylphenols, alkylene oxide adducts of fatty acids having 8 to 22 carbon atoms or amines having 8 to 22 carbon atoms, polyoxyethylene polyoxypropylene block copolymers, fatty acid alkanolamines, fatty acid alkanolamides, polyhydric alcohol fatty acid esters or alkylene oxide adducts thereof, 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, and alkyl glycosides.

[0009] As the component (A), a polyoxyalkylene type nonionic surfactant is preferred. As the polyoxyalkylene type nonionic surfactant, a compound represented by the following general formula (a1) (hereinafter also referred to as "compound (a1)") and a compound represented by the following general formula (a2) (hereinafter also referred to as "compound (a2)") are more preferred, with compound (a1) being even more preferred.

[0010] R 1 -O-[(EO) s1 / (A 1 O) t1 ]-(EO) u1 -R 2 (a1) (In general formula (a1), R 1 is a hydrocarbon group having 8 to 22 carbon atoms, and R 2 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms; EO represents an oxyethylene group; s1 represents the average number of repetitions of EO, and is a number from 3 to 25; A 1 O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), t1 is a number from 0 to 6 representing the average number of repetitions of A1O, and u1 is a number from 0 to 20 representing the average number of repetitions of EO.

[0011] R 1 The hydrocarbon group has 8 to 22 carbon atoms, preferably 10 to 18 carbon atoms, and particularly preferably 12 to 18 carbon atoms. 1R may be linear or branched. 1 may be a linear hydrocarbon group, or may be a group selected from a branched primary hydrocarbon group and a linear secondary hydrocarbon group. 1 is preferably a straight-chain hydrocarbon group. R 1 The hydrocarbon group may or may not have an unsaturated bond. R bonded to -O- 1 The carbon atom in may be a primary or secondary carbon atom.

[0012] R 2 When the group is an alkyl group, it has 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms. R 2 When is an alkenyl group, it has 2 to 6 carbon atoms, preferably 2 to 3 carbon atoms. R 2 is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably a hydrogen atom.

[0013] s1 is 3 to 25, and when the detergent composition contains an enzyme, from the viewpoint of excellent enzyme stability, s1 is preferably 5 to 25, more preferably 7 to 20, even more preferably 7 to 18, and particularly preferably 7 to 15. Furthermore, from the viewpoint of further improving detergency against pigmented stains, particularly stains containing red wine pigments (hereinafter also referred to as "wine stains"), s1 is preferably 7 to 18, and particularly preferably 12 to 15. It is believed that the longer the oxyethylene group, i.e., the more hydrophilic it is, the more easily it acts on wine stains, which are hydrophilic components, and the higher the detergency can be exhibited.

[0014] t1 is 0 to 6, preferably 0 to 3. u1 is 0 to 20, preferably 0 to 15, and more preferably 0 to 10.

[0015] R 1When t1 is a linear hydrocarbon group, s1+u1 is preferably 3 to 30, more preferably 5 to 25, still more preferably 5 to 20, particularly preferably 7 to 18, and most preferably 12 to 15. t1 is preferably a number of 0 to 6, and more preferably 0 to 3. R 1 When t1 is a branched hydrocarbon group, s1+u1 is preferably 1 to 20, more preferably 3 to 14, more preferably 4 to 12, and most preferably 5 to 10. t1 is preferably a number of 0 to 6, and more preferably 0 to 3.

[0016] When t1 is not 0, that is, when the compound (a1) has EO and PO, EO and BO, or EO, ​​PO and BO, [(EO) s1 / (A 1 O) t1 In the formula, the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO is not particularly limited, and they may be arranged in a block form or randomly. 1 -O-, or PO or BO may be bonded to "R 1 It may be bonded to "-O-". When t1 is not 0, the compound (a1) preferably has EO and PO, or EO and BO. The average number of repetitions can be measured by gas chromatography, NMR, or the like.

[0017] R 1 When is a branched hydrocarbon group, R 1 In the compound (a1), R is preferably a hydrocarbon group represented by the following general formula (α). 1 is a hydrocarbon group represented by the following general formula (α) is also particularly referred to as "compound (a1-α)". R 5 -CHR 6 -CH2- (α) (In general formula (α), R 5 and R 6 are each independently a chain monovalent hydrocarbon group, and R 5 and R 6 The total number of carbon atoms is 6 to 16.)

[0018] R 5 and R 6 are each independently a linear monovalent hydrocarbon group. 5 and R 6 The total number of carbon atoms is 6 to 16, preferably 6 to 14, more preferably 6 to 14, and even more preferably 6 to 10. R 5 and R 6 The chain monovalent hydrocarbon group in may be linear or branched. The chain monovalent hydrocarbon group may or may not have an unsaturated bond. The chain monovalent hydrocarbon group is preferably an alkyl group or an alkenyl group. R 5 The number of carbon atoms and R 6 If the number of carbon atoms is different from that of R 5 and R 6 The one having the fewer carbon atoms preferably has 2 to 7 carbon atoms, and the one having the greater carbon atom preferably has 4 to 14 carbon atoms.

[0019] R 5 -CHR 6 -CH2- is Guerbet alcohol (R 5 -CHR 6 It is a residue obtained by removing one hydroxyl group from R 5 -CHR 6 -CH2- is R 5 -CH(R 6 )-CH2-. Guerbet alcohol is an alcohol obtained by subjecting raw material alcohol to the Guerbet reaction. In the Guerbet reaction, two raw material alcohol molecules are condensed to form a dimer. For example, if the raw material alcohol is R 7 -CH2-CH2-OH (where R 7 is a linear monovalent hydrocarbon group having 2 to 7 carbon atoms. 7 -CH2-CH2-CHR 7 Guerbet alcohol, represented by -CH2-OH, is obtained. The two molecules of raw alcohol that form Guerbet alcohol may be different. When the two molecules of raw alcohol are the same, R 5 The number of carbon atoms and R6 The difference in the number of carbon atoms is 2. R 5 -CHR 6 Examples of -CH2- include a 2-ethylhexyl group and a 2-propylheptyl group.

[0020] Specific examples of the compound (a1-α) include 2-ethylhexyl alcohol alkoxylates 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] The compound (a1-α) may be a commercially available product, or may be produced by a known production method. For example, commercially available products of 2-ethylhexyl alcohol ethoxylate include "Newcol 1008" manufactured by Nippon Nyukazai Co., Ltd., and "Lutensol XP-100," "Lutensol XP-80," and "Lutensol XP-50" manufactured by BASF. An example of a method for producing compound (a1-α) is a method in which 1 to 20 moles of alkylene oxide are added to Guerbet alcohol having 8 to 18 carbon atoms. The Guerbet alcohol may be produced by subjecting the raw material alcohol described above to the Guerbet reaction, or a commercially available product may be used. For example, 2-propylheptyl alcohol can be obtained by subjecting pentanol to the Guerbet reaction.

[0022] R 3 -X-[(EO) s2 / (A 2 O) t2 ]-(EO) u2 -R 4 (a2) (In general formula (a2), R3 is a hydrocarbon group having 7 to 21 carbon atoms, -X- is -COO- or -CONH-, and R 4 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms; EO represents an oxyethylene group; s2 represents the average number of repetitions of EO, and is a number from 3 to 25; A 2 O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), and t2 represents A 2 is a number between 0 and 6 indicating the average number of repeats of O, and u2 is a number between 0 and 20 indicating the average number of repeats of EO.

[0023] R 3 The hydrocarbon group has 7 to 21 carbon atoms, preferably 9 to 19 carbon atoms, and more preferably 11 to 17 carbon atoms. 3 may be linear or branched. 3 may be a linear hydrocarbon group, or may be a group selected from a branched primary hydrocarbon group and a linear secondary hydrocarbon group. 3 is preferably a straight-chain hydrocarbon group. R 3 The hydrocarbon group may or may not have an unsaturated bond. R bonded to -X- 3 The carbon atom in may be a primary or secondary carbon atom.

[0024] R 4 When the group is an alkyl group, it has 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms. R 4 When is an alkenyl group, it has 2 to 6 carbon atoms, preferably 2 to 3 carbon atoms. R 4 is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably an alkyl group having 1 to 2 carbon atoms. As —X—, —COO— is preferred.

[0025] s2 is 3 to 25, preferably 5 to 20, more preferably 10 to 18, and even more preferably 12 to 18, in terms of excellent enzyme stability. t2 is 0 to 6, preferably 0 to 3. u2 is 0 to 20, preferably 0 to 15, and more preferably 0 to 10. s2+u2 is preferably 5-30, more preferably 5-25, further preferably 5-20, and particularly preferably 10-20.

[0026] When t2 is not 0, that is, when the compound (a2) has EO and PO, EO and BO, or EO, ​​PO and BO, [(EO) s2 / (A 2 O) t2 In the formula, the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO is not particularly limited, and they may be arranged in a block form or randomly. 3 -X-" or PO or BO may be bonded to "R 3 -X-" may be bonded to the When t2 is not 0, the compound (a2) preferably has EO and PO, or EO and BO.

[0027] The compound (a2) is preferably a polyoxyethylene fatty acid alkyl ester, and particularly preferably a polyoxyethylene fatty acid alkyl ester, 3 is an alkyl group having 11 carbon atoms and an alkyl group having 13 carbon atoms, -X- is -COO-, and R 4 is a methyl group, s2=15, t2=0, and u2=0 (hereinafter, sometimes referred to as MEE). Polyoxyethylene fatty acid alkyl esters, particularly MEE, are nonionic surfactants with weak molecular orientation in aqueous solutions, resulting in unstable micelles. Therefore, polyoxyethylene fatty acid alkyl esters do not undergo gelation at high concentrations, and even if a single polyoxyethylene fatty acid alkyl ester is incorporated into a detergent composition in large amounts, it is believed that its solubility in water is enhanced. Therefore, it is believed that a detergent composition containing polyoxyethylene fatty acid alkyl esters quickly disperses into a cleaning solution upon contact with water, forming a cleaning solution. Furthermore, the concentration of polyoxyethylene fatty acid alkyl esters in the cleaning solution quickly becomes uniform, allowing a cleaning solution of appropriate concentration to come into contact with the items being washed (textile products) from the early stages of the wash, resulting in high detergency.

[0028] The above-mentioned component (A) may be used alone or in combination of two or more.

[0029] The content of component (A) is preferably 10 to 60 mass% relative to the total mass of the detergent composition, more preferably 20 to 60 mass%, and even more preferably 30 to 60 mass%. When the content of component (A) is equal to or greater than the above-mentioned lower limit, detergency can be further enhanced. When the content of component (A) is equal to or less than the above-mentioned upper limit, separation, precipitation, or viscosity increase can be more effectively suppressed (liquid stability can be improved). In addition, when the content of component (A) is equal to or less than the above-mentioned upper limit, defoaming can be more rapidly achieved, improving rinsing performance.

[0030] <(B) component> Component (B) is a non-soap anionic surfactant. "Non-soap anionic surfactant" refers to an anionic surfactant excluding higher fatty acids and their salts (so-called soaps). "Higher fatty acids" refer to saturated fatty acids having 8 to 24 carbon atoms and unsaturated fatty acids having 8 to 24 carbon atoms. That is, the component (B) is an anionic surfactant excluding saturated fatty acids having 8 to 24 carbon atoms, unsaturated fatty acids having 8 to 24 carbon atoms, and salts thereof.

[0031] Examples of component (B) include carboxylic acid-type anionic surfactants such as linear alkylbenzenesulfonic acid or its salt (LAS), α-olefinsulfonic acid or its salt (AOS), linear or branched alkyl sulfate ester or its salt (AS), polyoxyalkylene alkyl ether sulfate ester or its salt (AES), polyoxyalkylene alkenyl ether sulfate ester or its salt, alkyl-containing alkanesulfonic acid or its salt, α-sulfofatty acid ester or its salt, internal olefinsulfonic acid or its salt (IOS), hydroxyalkanesulfonic 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, and 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, and glycerin fatty acid ester monophosphate ester or its salt. Examples of salt forms of non-soap 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.). The component (B) may be used alone or in combination of two or more.

[0032] As component (B), LAS, AOS, AS, and AES are preferred. From the viewpoint of further enhancing detergency, as component (B), LAS and AES are more preferred. The detergent composition preferably contains at least LAS, and more preferably contains both LAS and AES.

[0033] The component (B) includes LAS (also referred to as the "component (b1)"). The number of carbon atoms in the alkyl chain of the LAS is preferably 8 to 18, more preferably 8 to 16, and even more preferably 10 to 14. When the number of carbon atoms is within the above range, the detergency can be further improved. As the component (b1), linear alkylbenzene sulfonic acid (LAS-H), linear alkylbenzene sodium sulfonate (LAS-Na), and linear alkylbenzene potassium sulfonate (LAS-K) are preferred.

[0034] Examples of AES include compounds represented by the following general formula (b2) (also referred to as "component (b2)"). R 9 -O-[(EO) v / (PO) w ]-SO3M ···(b2) (In general formula (b2), R 9 is an alkyl group having 8 to 20 carbon atoms or an alkenyl group having 8 to 20 carbon atoms, EO is an oxyethylene group, PO is an oxypropylene group, v is a number of 0 or more representing the average number of repetitions of EO, w is a number of 0 to 6 representing the average number of repetitions of PO, and M is a counter ion.

[0035] R 9 R may be linear or branched. 9 As the alkyl group, a linear or branched alkyl group having 10 to 20 carbon atoms is preferred, and a linear or branched alkyl group having 12 to 14 carbon atoms is more preferred. The proportion (content) of the compound in formula (b2) where v=0 and w=0 is preferably 35 to 55 mass % relative to the total mass of the AES. v is preferably 0 to 5, more preferably 0.1 to 3, further preferably 0.5 to 3, and particularly preferably 0.5 to 2.5. w is preferably 0 to 3, and 0 is more preferable. v+w is preferably a number exceeding 0, more preferably 1 to 5. When v and w are not 0, that is, when component (b2) contains both EO and PO, the EO and PO may be added in a block form or in a random form. Examples of methods for adding EO and PO in a block form include a method of introducing ethylene oxide and then propylene oxide, and a method of introducing propylene oxide and then ethylene oxide. The mole distribution of ethylene oxide and propylene oxide added is not particularly limited. Examples of M include a hydrogen atom; an alkali metal ion such as sodium or potassium; an alkaline earth metal ion such as magnesium; and an alkanolamine such as monoethanolamine or diethanolamine. When M is a counter ion with a valence of 2 or more, M is bonded to -SO3 at a number obtained by multiplying M by 1 / valence. For example, when M is a magnesium ion, the number of M is 1 / 2.

[0036] The above-mentioned component (B) may be used alone or in combination of two or more.

[0037] The content of component (B) is preferably 3 to 30 mass% relative to the total mass of the detergent composition, more preferably 3 to 25 mass%, and even more preferably 4 to 20 mass%. When the content of component (B) is equal to or greater than the above-mentioned lower limit, detergency can be further enhanced. When the content of component (B) is equal to or less than the above-mentioned upper limit, liquid stability and rinsability can be further enhanced.

[0038] The content of component (b1) is 3% by mass or more, preferably 3 to 20% by mass, more preferably 3 to 15% by mass, and even more preferably 3 to 12% by mass, based on the total mass of the detergent composition. When the content of component (B) is equal to or greater than the above-mentioned lower limit, detergency can be further enhanced. When the content of component (B) is equal to or less than the above-mentioned upper limit, yellowing can be more effectively suppressed. In addition, when the content of component (B) is equal to or less than the above-mentioned upper limit, liquid stability and rinsability can be further improved.

[0039] The sum of the content of component (A) and the content of component (B) (hereinafter also referred to as "AB amount") is 20% by mass or more, preferably 20 to 80% by mass, more preferably 30 to 80% by mass, even more preferably 35 to 70% by mass, particularly preferably 38 to 65% by mass, and most preferably 40 to 60% by mass, based on the total mass of the detergent composition. When the AB amount is at least the above lower limit, detergency can be enhanced. When the AB amount is not more than the above upper limit, stability when the detergent composition is stored at low temperatures (for example, -5°C or below) (hereinafter also referred to as "low-temperature stability") can be enhanced.

[0040] The mass ratio of the content of component (A) to the content of component (B), expressed as component (A) / component (hereinafter also referred to as "A / B ratio"), is 0.7 or more, more preferably 0.7 to 5, even more preferably 1.5 to 5, and particularly preferably 2 to 5. When the A / B ratio is at least the above lower limit, yellowing of the cleaning composition can be suppressed. When the A / B ratio is at most the above upper limit, low-temperature stability can be improved.

[0041] <(C) component> Component (C) is one or more selected from ethylenediaminedisuccinic acid (EDDS), hydroxyiminodisuccinic acid (HIDS), glutamic acid diacetic acid (GLDA), diethylenetriaminepentaacetic acid (DTPA), and salts thereof. That is, component (C) is a specific chelating agent. By including component (C), the detergent composition can suppress yellowing.

[0042] Examples of salt forms of component (C) include alkali metal salts (sodium salt, potassium salt, etc.), alkaline earth metal salts (magnesium salt, etc.), and alkanolamine salts (monoethanolamine salt, diethanolamine salt, etc.).

[0043] The above-mentioned component (C) may be used alone or in combination of two or more.

[0044] The content of component (C) is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.3% by mass or more, based on the total mass of the detergent composition. When the content of component (C) is equal to or greater than the above lower limit, yellowing of the detergent composition can be more effectively suppressed. The upper limit of the content of component (C) is not particularly limited, but is preferably 5 mass% or less based on the total mass of the detergent composition. When the content of component (C) is the above upper limit or less, liquid stability can be improved.

[0045] The mass ratio of the content of the component (B) to the content of the component (C), expressed as component (B) / component (C) (hereinafter also referred to as the "B / C ratio"), is preferably 1300 or less, more preferably 10 to 100, even more preferably 10 to 50, and even more preferably 10 to 30. When the B / C ratio is within the above range, yellowing can be more effectively suppressed.

[0046] The mass ratio of the content of the component (b1) to the content of the component (C), expressed as component (b1) / component (C) (hereinafter also referred to as "b1 / C ratio"), is preferably 1000 or less, more preferably 5 to 50, and even more preferably 5 to 20. When the b1 / C ratio is within the above range, yellowing can be more effectively suppressed.

[0047] <(D) component> Component (D) is an alkanolamine. By including component (D), the cleaning composition can have improved liquid stability.

[0048] Examples of component (D) include primary to tertiary monoamine compounds having one to three hydroxyalkyl groups each having 2 to 4 carbon atoms bonded to a nitrogen atom. When the alkanolamine has a group other than a hydroxyalkyl group, such a group may be an organic group, for example, an alkyl group having 1 to 4 carbon atoms, preferably a methyl group. Specific examples include monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, dipropanolamine, tripropanolamine, N-methylethanolamine, N-methylpropanolamine, and N-ethylethanolamine. From the viewpoint of liquid stability, particularly stability during low-temperature storage, monoethanolamine, diethanolamine, and triethanolamine are preferred, with monoethanolamine being particularly preferred.

[0049] The content of component (D) is preferably 0.1 mass% or more, more preferably 0.1 to 5 mass%, and even more preferably 0.1 to 3 mass%, based on the total mass of the cleaning composition. When the content of component (D) is equal to or greater than the above-mentioned lower limit, the liquid stability of the cleaning composition can be further improved. When the content of component (D) is equal to or less than the above-mentioned upper limit, yellowing can be more effectively suppressed.

[0050] The mass ratio of the content of component (C) to the content of component (D), expressed as component (C) / component (hereinafter also referred to as "C / D ratio"), is preferably 0.001 or more, more preferably 0.05 or more, and even more preferably 0.25 or more. When the C / D ratio is equal to or more than the above lower limit, yellowing can be more effectively suppressed. The upper limit of the C / D ratio is not particularly limited, and is preferably, for example, 1.7 or less. When the C / D ratio is equal to or less than the upper limit, the liquid stability can be further improved.

[0051] The mass ratio of the content of the component (B) to the content of the component (D), expressed as component (B) / component (hereinafter also referred to as the "B / D ratio"), is preferably 9 or less, more preferably 4 to 9, even more preferably 4 to 8, and most preferably 6 to 7. When the B / D ratio is within the above range, yellowing can be more effectively suppressed.

[0052] The mass ratio of the total amount (BD amount) of components (B) and (D) to the content of component (C), expressed as {component (B) + component (D)} / component (C) (hereinafter also referred to as "BD / C ratio"), is preferably 3000 or less, more preferably 5 to 1500, even more preferably 5 to 50, and particularly preferably 10 to 30. When the BD / C ratio is within the above range, yellowing can be more effectively suppressed.

[0053] The mass ratio of the total amount (b1D amount) of the components (b1) and (D) to the content of the component (C), expressed as {component (b1) + component (D)} / component (C) (hereinafter also referred to as the "b1D / C ratio"), is preferably 1200 or less, more preferably 5 to 150, even more preferably 5 to 30, and particularly preferably 5 to 25. When the b1D / C ratio is within the above range, yellowing can be more effectively suppressed.

[0054] <(E) component> Component (E) is water. The component (E) is not particularly limited, and examples thereof include ion-exchanged water, distilled water, and pure water.

[0055] The content of component (E) is 20% by mass or more, preferably 20 to 40% by mass, based on the total mass of the detergent composition. When the content of component (E) is equal to or greater than the above-mentioned lower limit, the detergent composition disperses quickly in water. When the content of component (E) is equal to or less than the above-mentioned upper limit, the surfactant content can be further increased.

[0056] <Optional ingredients> The detergent composition may contain other components (optional components) in addition to the above-mentioned components (A) to (E) as long as the effects of the present invention are not impaired. Examples of optional components include higher fatty acids and their salts (component (F)), surfactants other than components (A), (B), and (F) (optional surfactants), water-miscible solvents, pH adjusters (excluding component (D)), antibacterial agents, enzymes, metal ion scavengers (excluding component (C)), preservatives, texture improvers, dye transfer inhibitors, redeposition inhibitors, pearlizing agents, soil release agents, hydrotropes, colorants, opacifiers, fluorescent agents, and extracts.

[0057] <(F) Component> Component (F) is one or more selected from higher fatty acids (fatty acids having 8 to 22 carbon atoms) and salts thereof (i.e., soaps). By including component (F), the detergent composition can improve rinsing properties. Component (F) may be a saturated fatty acid, an unsaturated fatty acid, or a mixture thereof. The component (F) preferably has 10 to 20 carbon atoms, and more preferably 12 to 18 carbon atoms. Examples of the (F) component include single fatty acids such as stearic acid, linoleic acid, oleic acid, coconut fatty acid, etc., or salts thereof; mixed fatty acids such as coconut fatty acid, beef tallow fatty acid, etc., or salts thereof; and these (F) components may be used singly or in combination of two or more.

[0058] The content of component (F) is preferably 0.3 to 3 mass%, and more preferably 0.5 to 2.5 mass%, relative to the total mass of the detergent composition. When the content of component (F) is equal to or greater than the above-mentioned lower limit, rinsing performance can be further improved. When the content of component (F) is equal to or less than the above-mentioned upper limit, deterioration of the fragrance of the detergent composition can be effectively suppressed.

[0059] <Optional surfactant> The optional surfactants include cationic surfactants, amphoteric surfactants, semi-polar surfactants, and the like. Examples of cationic surfactants include quaternary ammonium salts, etc. Examples of the form of the quaternary ammonium salt include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). Examples of amphoteric surfactants include alkylbetaine type, alkylamidebetaine type, imidazoline type, alkylaminosulfone type, alkylaminocarboxylic acid type, alkylamidecarboxylic acid type, amide amino acid type, and phosphoric acid type amphoteric surfactants. Examples of the semi-polar surfactant include alkylamine oxide, alkylamidopropyldimethylamine oxide, and the like. These optional surfactants may be used alone or in combination of two or more.

[0060] The total amount of surfactants (the total amount of component (A), component (B), and optional surfactants (excluding the content of component (F)) is preferably 10 to 45 mass%, more preferably 10 to 40 mass%, and even more preferably 12 to 30 mass%, based on the total mass of the cleaner composition. When the total amount of surfactants is at least the above lower limit, the detergency can be further enhanced. When the total amount of surfactants is no greater than the above upper limit, the defoaming property can be further enhanced.

[0061] <Water-miscible organic solvent> A water-miscible organic solvent is an organic solvent that dissolves 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 having a molecular weight of about 200 to 1,000, 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. The content of the water-miscible organic solvent is preferably 1 to 10% by mass relative to the total mass of the detergent composition.

[0062] <pH adjuster> Examples of pH adjusters (excluding component (D)) include hydrochloric acid, sulfuric acid, phosphoric acid, paratoluenesulfonic acid, sodium hydroxide, potassium hydroxide, and ammonia.

[0063] The total amount of components (A) to (E) and any optional components does not exceed 100% by mass.

[0064] <Physical properties> The pH of the detergent composition at 25°C is preferably from 5.5 to 8.5, more preferably from 5.7 to 8.3, and even more preferably from 6.0 to 8.0. The pH is a value measured using a pH meter (product name: HM-30G, manufactured by DKK-Toa Corporation).

[0065] The viscosity of the detergent composition at 25° C. measured with a Brookfield viscometer is preferably 10 to 1,000 mPa·s, more preferably 10 to 500 mPa·s. When the viscosity is within the above range, handling becomes easy. The viscosity was measured using a Brookfield viscometer (B-type viscometer) with the rotor rotation speed set to 60 rpm after 60 seconds.

[0066] (Manufacturing method) The cleaning composition of the present invention can be produced according to a conventional method for producing a cleaning composition. For example, the cleaning composition can be produced by adding components (A), (B), (C), and (D), and optionally any optional components, to a part of component (E) and dissolving them, adjusting the pH with a pH adjuster as necessary, and then adding the remaining component (E).

[0067] (How to use) Examples of methods for using the detergent composition (i.e., methods for washing textile products) include a method in which the detergent composition is placed in a detergent composition inlet of a washing machine and then the washing machine is operated; a method in which the detergent composition is placed in water together with the items to be washed when washing; a method in which the detergent composition is dissolved in water in advance and the items to be washed are immersed in a washing liquid prepared; a method in which the detergent composition is directly applied to the items to be washed and left for, for example, 3 minutes to 24 hours, followed by normal washing.

[0068] It is also preferable to use a washing machine equipped with an automatic detergent dispenser, which has recently become practical. The automatic detergent dispenser automatically dispenses the detergent composition from a tank containing the detergent composition into the washing tub via a dust filter at the bottom of the tank and a dispensing pipe. A measuring means such as a syringe pump is provided in the dispensing pipe, so that a fixed amount set according to the amount of laundry, etc., can be transferred from the tank to the washing tub. The use of an automatic detergent dispenser not only saves the trouble of measuring, but also prevents the detergent composition from sticking to hands during measuring or spilling and soiling the washing machine or surrounding area.

[0069] It is also preferable to use an automatic dispenser that can automatically dispense a predetermined amount of liquid. When an automatic dispenser is used, even a small amount of the detergent composition can be accurately measured, which is preferable because it makes it easier to exhibit sufficient detergency and avoids waste due to overuse. Some automatic dispensers are commercially available that use an infrared sensor or the like to automatically dispense the detergent composition without touching a switch, etc. By using such an automatic dispenser, the user can measure out the detergent composition simply by holding the container in one hand, which significantly reduces the burden on the user.

[0070] When an automatic dispenser is used, it is also preferable to receive the dispensed detergent composition in a flexible container and then directly place the flexible container in the washing machine, thereby ensuring that the entire amount of the dispensed detergent composition is dissolved in the washing liquid. Examples of materials for the soft container that can be directly put into the washing machine include silicone resin, polyvinyl chloride, elastomer, soft polyester, soft polypropylene, polyurethane, and the like.

[0071] Examples of items to be washed include textile products such as clothing, dishcloths, towels, sheets, curtains, etc. The material of the textile products is not particularly limited, and may be any of natural fibers such as cotton, silk, wool, etc., and chemical fibers such as polyester, polyamide, etc.

[0072] When the cleaning composition is dissolved in water to prepare a cleaning liquid, it is preferably diluted, for example, 5 to 6,000 times (by volume). The liquor ratio, which is the amount of water per item being washed (mass of detergent during washing / mass of items being washed), is preferably 5 or more for drum-type washing machines and 10 or more for vertical washing machines.

[0073] The detergent composition is suitable as a detergent for textile products, and more suitable as a detergent composition for clothing. [Example]

[0074] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following description.

[0075] (Raw materials used) <Component (A)> A-1: Polyoxyethylene alkyl (carbon number: 12 to 14) ether (average number of moles of ethylene oxide added: 7), obtained by adding 7 moles of ethylene oxide to natural alcohol. In the general formula (a1), R 1 is at least one linear alkyl group selected from alkyl groups having 12 carbon atoms and alkyl groups having 14 carbon atoms, and R 2 is a hydrogen atom, and A 1 A compound in which O is an oxyethylene group, s1 is 7, t1 is 0, and u1 is 0. Synthesized by the following synthesis method. Shown in the table as "AE(7EO)". A-2: Polyoxyethylene alkyl (carbon number: 12 to 14) ether (average number of moles of ethylene oxide added: 15), obtained by adding 15 moles of ethylene oxide to a natural alcohol. In the general formula (a1), R 1 is at least one linear alkyl group selected from alkyl groups having 12 carbon atoms and alkyl groups having 14 carbon atoms, and R2 is a hydrogen atom, and A 1 A compound in which O is an oxyethylene group, s1 is 15, t1 is 0, and u1 is 0. Synthesized by the following synthesis method. Marked as "AE(15EO)" in the table. A-3: Primary branched Guerbet alcohol type nonionic surfactant (10EO), manufactured by BASF, trade name "Lutensol XP100", which is a surfactant obtained by adding 10 moles of ethylene oxide to a C10 alcohol obtained by subjecting pentanol to the Guerbet reaction, 1 R 5 -CHR 6 -CH2- and R 2 is a hydrogen atom, and R 5 is an n-pentyl group, and R 6 is an n-propyl group, and A 1 A compound in which O is an oxyethylene group, s1 is 10, t1 is 0, and u1 is 0. Shown as "XP100" in the table. A-4: Polyoxyethylene polyoxypropylene alkyl ether, average number of moles of ethylene oxide added: 15, average number of moles of propylene oxide added: 3, obtained by adding an average of 15 moles of ethylene oxide and an average of 3 moles of propylene oxide to a linear primary alcohol having 12 to 14 carbon atoms. Manufactured by Lion Chemical Co., Ltd., trade name "CLAEP-15030". In the general formula (a1), R 1 is a linear alkyl group having 12 to 14 carbon atoms, and R 2 is a hydrogen atom, s1 is 15, and A 1 A compound in which O is PO, t1 is 3, and u1 is 0. Indicated as "EOPO" in the table. A-5: Sodium internal olefin sulfonate, obtained by the synthesis method below, with a hydroxy content of 85% by mass. Marked as "IOS" in the table.

[0076] <<How to synthesize A-1>> 861.2 g of natural alcohol (manufactured by Procter & Gamble, trade name "CO-1214") and 2.0 g of a 30% by mass aqueous NaOH solution were charged into a pressure-resistant reaction vessel, and the inside of this reaction vessel was purged with nitrogen. Next, after dehydration at a temperature of 100°C and a pressure of 2.0 kPa or less for 30 minutes, the temperature was raised to 160°C. Next, while stirring the reaction solution, 355.0 g of ethylene oxide (in gaseous form) was gradually added to the reaction solution. At this time, ethylene oxide was added through a blowing tube while adjusting the addition rate so that the reaction temperature did not exceed 180°C. After completion of the addition of ethylene oxide, aging was carried out at a temperature of 180°C and a pressure of 0.3 MPa or less for 30 minutes, and then unreacted ethylene oxide was distilled off 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 for neutralization so that the pH of a 1% by mass aqueous solution of the reaction product became 7, and A-1 was obtained.

[0077] <Synthesis method of A-2> A-2 was obtained by the same synthesis method as A-1, except that the addition amount of ethylene oxide (in gaseous form) was changed to 760.6 g.

[0078] <Synthesis method of A-5> The internal olefin used was an internal olefin mixture containing 2.0 mass% paraffin components, with a total double bond ratio of 26 mass% at the 2nd position, a cis / trans isomer mass ratio of 27 / 73, and 3 mass% C14 or less (representing the number of carbon atoms; the same applies hereinafter). This internal olefin mixture consisted of 3 mass% C14 or less, 33 mass% C15, 39 mass% C16, 24 mass% C17, and 1 mass% C18 or more. This internal olefin mixture was subjected to a conventional sulfonation reaction using nitrogen-diluted SO3 gas (SO3 concentration: 5% by volume) in a glass thin-film sulfonation reactor with an inner diameter of 6 mm and a length of 1.2 m under the conditions of a reactor temperature of 10°C and a molar ratio of SO3 / internal olefin of 1.1, to obtain internal olefin sulfonic acid. The resulting reaction product, internal olefin sulfonic acid, was aged at 5°C for 1 hour, and then 1.11 times the molar amount (relative to the internal olefin sulfonic acid) of a 15% aqueous solution of sodium hydroxide was added and the mixture was stirred at 30°C for 30 minutes to carry out a neutralization reaction, yielding a neutralized product. This neutralized product was then heated in an autoclave at 160°C for 40 minutes and hydrolyzed to yield sodium internal olefin sulfonate.

[0079] <(B) component> B-1: Linear alkylbenzene sulfonic acid (LAS-H), manufactured by Lion Corporation, trade name: Lipon LH-200. B-2: Polyoxyethylene alkyl ether sulfate (AES), average number of moles of ethylene oxide added is 1.0.

[0080] <(C) component> C-1: Hydroxyiminodisuccinic acid (HIDS), manufactured by Nippon Shokubai Co., Ltd., trade name "Biodegradable Chelating Agent (HIDS (registered trademark)"). C-2: Ethylenediaminedisuccinic acid (EDDS) (manufactured by Chelest Co., Ltd., trade name "Chelest EDDS-35"). C-3: Glutamic acid diacetate (GLDA) (Nouryon, trade name "Dissolvine GL-47-S") C-4: Diethylenetriaminepentaacetic acid (DTPA) (manufactured by Chelest Co., Ltd., trade name "Chilest P").

[0081] <Component (C')> Comparison product of component (C) C'-1: Hexasodium triethylenetetraminehexaacetate (TTHA) (manufactured by Chelest Co., Ltd., trade name "Chilest Q"). C'-2: Trisodium methylglycine diacetate (MGDA) (BASF, trade name "Trilon M Liquid JP"). C'-3: Tetrapotassium ethylenediaminetetraacetate (EDTA) (manufactured by Chelest Corporation, trade name "Chilest 4K-50").

[0082] <(D) component> D-1: Monoethanolamine, trade name "Monoethanolamine", manufactured by MIWON Chemical Co., Ltd.

[0083] <(E) component> Water: Ion-exchanged water.

[0084] <Optional ingredients> Ethanol: Manufactured by Japan Alcohol Sales Co., Ltd., product name: "Specific Alcohol 95% Synthetic." PEG: Polyethylene glycol (manufactured by Junsei Chemical Co., Ltd., product name "PEG#1000", mass average molecular weight = 1000). (F) Ingredient: NOF Corporation, product name "Coconut Fatty Acid". Dichrosan: 5-chloro-2-(4-chlorophenoxy)phenol (manufactured by BASF, trade name "TINOSAN (registered trademark) HP100"). · Solfit: 3-methoxy-3-methyl-1-butanol (manufactured by Kuraray Co., Ltd., trade name "Solfit"). ·Pigment: Manufactured by Kinmi Kasei Co., Ltd., product name "Green No. 3". Fragrance: Fragrance composition A described in Tables 11 to 18 of JP-A No. 2002-146399. Enzymes: Multi-enzyme (Novozymes, trade name "Medley Core 210L", enzyme liquid preparation). NaOH: pH adjuster, product name "sodium hydroxide", manufactured by Tsurumi Soda Co., Ltd. pTS: p-toluenesulfonic acid (manufactured by Kyowa Kirin Co., Ltd., trade name "PTS acid").

[0085] (Evaluation method) <Liquid stability> Each example of the detergent composition was placed in a glass bottle at room temperature, and the appearance was visually observed and evaluated according to the following evaluation criteria.

[0086] <Evaluation Criteria> ◯: Transparent. △: Slightly cloudy. ×: Clear turbidity or sediment is observed.

[0087] <Yellowing prevention> 30 mL of each cleaning composition was placed in a transparent glass bottle (wide-mouth standard bottle, PS-No. 11), and the bottle was sealed with a lid. This was then placed in a thermostatic chamber at 50°C and stored for 15 days. The absorbance of the liquid cleaning composition was measured using a UV-vis spectrophotometer immediately before and immediately after storage. The value obtained by subtracting the absorbance immediately after storage from the absorbance immediately after storage was used as the yellowing progression value, and the yellowing progression value was evaluated based on the following criteria.

[0088] <Evaluation criteria> ◎: Less than 0.080. 〇: 0.080 or more and less than 0.100. △: 0.100 or more and less than 0.120. ×: 0.120 or more.

[0089] (Examples 1 to 21, Comparative Examples 1 to 7) According to the formulations shown in Tables 1 to 4, each component was added to component (E) and mixed to prepare the cleaning composition of each example. The blend amounts in the table are pure equivalent values. Ingredients whose amounts are not listed in the table are not included. In the table, the "appropriate amount" of NaOH and pTS is the amount required to adjust the pH of the detergent composition to the value shown in the table. In the table, the "balance" of the water composition is the amount required to make the entire detergent composition 100% by mass. The cleaning composition of each example was evaluated for liquid stability and inhibition of yellowing, and the results are shown in the table.

[0090] [Table 1]

[0091] [Table 2]

[0092] [Table 3]

[0093] [Table 4]

[0094] As shown in Tables 1 and 2, Examples 1 to 21 were rated "good" for liquid stability and "excellent" or "good" for yellowing inhibition. Comparative Examples 1 to 4, which either lacked the component (C) or contained the component (C') instead of the component (C), were rated "poor" for yellowing inhibition. In Comparative Examples 5 and 6, in which the A / B ratio was 0.3 to 0.6, the yellowing inhibition was rated as "Fair" or "Poor." Comparative Example 7, which lacked component (D), was rated "poor" for liquid stability. From the above results, it was confirmed that application of the present invention can provide good liquid stability and suppress yellowing.

Claims

1. Component (A): a nonionic surfactant; (B) component: a non-soap anionic surfactant; Component (C): one or more selected from ethylenediaminedisuccinic acid, hydroxyiminodisuccinic acid, glutamic acid diacetic acid, diethylenetriaminepentaacetic acid, and salts thereof; (D) component: alkanolamine; (E) Component: Water, A liquid detergent composition for textiles, comprising: The component (B) includes one or more (b1) selected from linear alkylbenzene sulfonic acids and salts thereof, The content of the component (b1) is 3% by mass or more based on the total mass of the liquid detergent composition for textile products, The total amount of the component (A) and the component (B) is 20% by mass or more based on the total mass of the liquid detergent composition for textile products, the mass ratio of the component (A) to the component (B) is 0.7 or more; The content of the component (E) is 20% by mass or more based on the total mass of the liquid detergent composition for textile products. A liquid detergent composition for textiles.

2. The liquid detergent composition for textile products according to claim 1, wherein the mass ratio represented by {the (B) component + the (D) component} / the (C) component is 3,000 or less.

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