Washing methods for textile products

Abstract

To provide a novel cleaning method for removing particulate dirt adhering to textile products using a cleaning solution containing a nonionic surfactant and a dialkyl quaternary ammonium salt. [Solution] A method for cleaning textile products, wherein particulate dirt adhering to the textile product is cleaned with a cleaning solution, the cleaning solution containing 3 mg / kg to 50 mg / kg of a dioctylammonium salt having a specific structure, a total amount of 50 mg / kg to 1000 mg / kg of a nonionic surfactant having a specific structure and an anionic surfactant as an optional component, an alkanolamine having 2 to 6 carbon atoms, a fatty acid or a salt thereof, and water.

Description

[Technical Field]

[0001] This invention relates to a method for cleaning textile products. More specifically, it relates to a method for cleaning textile products in which particulate dirt adhering to the textile product is cleaned with a cleaning solution. [Background technology]

[0002] Nonionic surfactants have traditionally been known as surfactants that remove sebum stains from clothing. Furthermore, it is known that treating textile products with a laundry detergent composition containing a dialkyl quaternary ammonium salt can impart an antibacterial effect to the clothing.

[0003] For example, Patent Document 1 discloses a liquid laundry detergent composition containing a quaternary ammonium salt having hydrocarbon groups of a specific chain length, an inorganic sulfate, and water, which has excellent deodorizing properties. Patent Document 2 discloses a liquid detergent composition containing a nonionic surfactant, a long-chain amine, and a dilong-chain alkyl type cationic surfactant, which has cleaning power, softening effect, does not cause yellowing, and has excellent low-temperature stability. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2017-8137 [Patent Document 2] Japanese Patent Publication No. 2003-206500 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] On the other hand, when cleaning particulate dirt such as mud stains attached to textile products, higher cleaning performance is required. Accordingly, the present invention relates to providing a novel cleaning method for cleaning particulate dirt adhering to textile products using a cleaning solution containing a nonionic surfactant and a dialkyl quaternary ammonium salt.

Means for Solving the Problems

[0006] The present invention relates to the following [1] to [4]. 〔1〕 A method for washing a textile product by washing particulate dirt adhering to the textile product with a cleaning liquid, wherein the cleaning liquid contains 3 mg / kg or more and 50 mg / kg or less of the following component (b), 50 mg / kg or more and 1000 mg / kg or less in total of component (c) and optional component (d), component (e), component (g), and water, and the mass ratio of the content of component (d) to the content of component (c) ((d) component / (c) component) in the cleaning liquid is 0 or more and 0.5 or less. A method for washing a textile product. (b) component: A compound represented by the following general formula (1)

[0007]

Chemical formula

[0008] 〔In the formula, R 1 and R 2 are each independently an alkyl group having 8 carbon atoms, and R 3 and R 4 are each independently a group selected from the group consisting of an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is a monovalent anion.〕 (c) component: A nonionic surfactant having an aliphatic hydrocarbon group having 10 to 18 carbon atoms and a polyoxyalkylene group (d) component: An anionic surfactant having a group selected from a sulfonic acid group and a sulfate ester group or a salt thereof (e) component: An alkanolamine having 2 to 6 carbon atoms (g) component: A fatty acid having 12 carbon atoms or a fatty acid having 12 to 18 carbon atoms including its salt or a salt thereof 〔2〕 The method for washing a textile product according to [1] above, wherein the weighted average alkylene oxide addition mole number of all component (c) contained in the cleaning liquid is 2 moles or more and 20 moles or less. 〔3〕A liquid detergent composition for textile products for cleaning particulate soil, comprising the following components (b), (c), any component (d), component (e), component (g) and water. Component (b): A compound represented by the following general formula (1)

[0009] [Chemical formula]

[0010] [In the formula, R 1 and R 2 are each independently an alkyl group having 8 carbon atoms, and R 3 and R 4 are each independently a group selected from the group consisting of an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is a monovalent anion. ] Component (c): A nonionic surfactant having an aliphatic hydrocarbon group having 10 to 18 carbon atoms and a polyoxyalkylene group Component (d): An anionic surfactant having a group selected from a sulfonic acid group and a sulfate ester group or a salt thereof Component (e): An alkanolamine having 2 to 6 carbon atoms Component (g): A fatty acid having 12 to 18 carbon atoms containing a fatty acid having 12 carbon atoms or a salt thereof, or a salt thereof 〔4〕The composition according to 〔3〕 above, wherein the weighted average number of moles of alkylene oxide added to all components (c) is 2 moles or more and 20 moles or less. [Advantages of the Invention]

[0011] According to the present invention, a new cleaning method for cleaning particulate soil adhering to textile products can be provided by using a cleaning liquid containing a nonionic surfactant and a dialkyl quaternary ammonium salt. [Modes for Carrying Out the Invention]

[0012] The inventors of this invention were investigating a method for cleaning textile products that could effectively remove particulate dirt using a cleaning solution containing a nonionic surfactant as the main cleaning component. Focusing on the chemical structure of dialkyl quaternary ammonium salts, they discovered that the presence of a quaternary ammonium salt with two C8 alkyl groups in the cleaning solution could unexpectedly effectively remove particulate dirt, thus completing the present invention. The mechanism by which this effect is achieved is presumed to be that the quaternary ammonium salt having two C8 alkyl groups of the present invention forms loosely interacting aggregates with fatty acids containing C12 fatty acids, and these aggregates adsorb onto particles, thereby efficiently dispersing the particles from textile products into the cleaning solution.

[0013] In this invention, particulate matter includes inorganic particulate matter such as mud, and organic particulate matter such as carbon. In this invention, textile products refer to clothing, yarn, fabrics, filters made of fibers, and cleaning tools made of fibers. Examples of clothing include denim pants and jackets, batik, undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, tights, etc. Examples of fibers that make up clothing include hydrophobic fibers such as acrylic, polyester, and nylon, and hydrophilic fibers such as cotton. Textiles include curtains and carpets. Filters made of fibers include filters used for filtering water and air purifiers. Cleaning tools made of fibers include sponges, rags, and mops.

[0014] [How to wash textile products] The present invention relates to a method for cleaning textile products, wherein particulate dirt adhering to the textile product is cleaned with a cleaning solution, the cleaning solution containing the following components: (b) at a concentration of 3 mg / kg or more and 50 mg / kg or less; (c) and an optional (d) in a total amount of 50 mg / kg or more and 1000 mg / kg or less; (e) and (g); and water, wherein the mass ratio of the content of component (d) to the content of component (c) in the cleaning solution ((d) / (c)) is 0 or more and 0.5 or less.

[0015] <Cleaning solution> The following describes each component that makes up the cleaning solution.

[0016] <(b) Component> The cleaning solution contains a quaternary ammonium salt of the compound represented by the following general formula (1) as component (b). Component (b) can be included in the cleaning solution by the formulation of component (b). (b) Components: Compound represented by the following general formula (1)

[0017] [ka]

[0018] [In the formula, R 1 and R 2 Each of these is an alkyl group having 8 carbon atoms, and R 3 and R 4 Each of these is a group independently selected from the group consisting of alkyl groups having 1 to 3 carbon atoms and hydroxyalkyl groups having 1 to 3 carbon atoms, X - It is a monovalent anion.

[0019] In general formula (1), R 1 and R 2 Each of these is an alkyl group having 8 carbon atoms. Examples of alkyl groups include linear or branched alkyl groups, preferably linear alkyl groups, and more preferably saturated linear hydrocarbon groups having 8 carbon atoms, i.e., octyl groups. 1 and R 2R may be an alkyl group having 8 carbon atoms other than an octyl group, but from the viewpoint of cleaning power, 1 and R 2 It is even more preferable that both are octyl groups.

[0020] In general formula (1), R 3 and R 4 Each of these groups is independently selected from the group consisting of alkyl groups having 1 to 3 carbon atoms and hydroxyalkyl groups having 1 to 3 carbon atoms. Specific examples of alkyl groups having 1 to 3 carbon atoms include the methyl group, ethyl group, and propyl group. Specific examples of hydroxyalkyl groups having 1 to 3 carbon atoms include the hydroxymethyl group, hydroxyethyl group, and hydroxypropyl group. 3 and R 4 From the viewpoint of further enhancing the bactericidal effect, the alkyl group is preferably one or more carbon atoms with 3 or fewer carbon atoms, and more preferably a group selected from methyl and ethyl groups.

[0021] In general formula (1), X - It is a monovalent anion. As the monovalent anion, a monovalent anion selected from the group consisting of halide ions and alkyl sulfate ions having 1 to 3 carbon atoms is preferred. Specific examples of halide ions are chloride ions and bromide ions, and chloride ions are preferred from the viewpoint of further enhancing the bactericidal effect. Specific examples of alkyl sulfate ions having 1 to 3 carbon atoms include methyl sulfate ions, ethyl sulfate ions, and propyl sulfate ions, and methyl sulfate ions and ethyl sulfate ions are preferred from the viewpoint of further enhancing the bactericidal effect.

[0022] <(c) component> (c) Component is a nonionic surfactant having an aliphatic hydrocarbon group with 10 to 18 carbon atoms and a polyoxyalkylene group. Component (c) adheres to clothing and has the effect of cleaning dirt.

[0023] (c) The component is not particularly limited as long as it is a nonionic surfactant having such a structure used in the field of detergents for textile products, but from the viewpoint of cleaning performance against dirt on textile products, it is preferable to include a nonionic surfactant having the structure represented by the following general formula (c1-1). R 8 (CO) m O-(AO) n -R 9 (c1-1) [In the formula, R 8 R is an aliphatic hydrocarbon group having 8 to 18 carbon atoms, 9 is a hydrogen atom or a methyl group. CO is a carbonyl group, and m is a number between 0 and 1. AO is an alkylene oxy group with 2 to 4 carbon atoms. n is the average number of moles added, and is a number between 1 and 30.

[0024] In general formula (c1-1), R 8 From the viewpoint of further improving cleaning performance, the number of carbon atoms is 8 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 16 or less, more preferably 14 or less.

[0025] R 8 R is an aliphatic hydrocarbon group, and from the viewpoint of further enhancing the particulate fouling removal effect, it is preferably a group selected from alkyl groups and alkenyl groups, and from the viewpoint of further enhancing the particulate fouling removal effect, it is more preferably an alkyl group. 8 The aliphatic hydrocarbon group may be a straight-chain aliphatic hydrocarbon group or a branched-chain aliphatic hydrocarbon group. The straight-chain aliphatic hydrocarbon group may be a straight-chain primary aliphatic hydrocarbon group or a straight-chain secondary aliphatic hydrocarbon group. 8 Preferred specific groups include one or more groups selected from primary or secondary octyl groups, decyl groups, nonyl groups, decyl groups, undecyl groups, dodecyl groups, tridecyl groups, tetradecyl groups, pentadecyl groups, hexadecyl groups, heptadecyl groups, octadecyl groups, tetradecenyl groups, hexadecenyl groups, and octadecenyl groups.

[0026] In the general formula (c1-1), m is a number of 0 or 1, and is preferably 0 from the viewpoint of further enhancing cleaning power. In general formula (c1-1), R 9 This is either a hydrogen atom or a methyl group, and from the viewpoint of further enhancing cleaning power, it is preferably a hydrogen atom.

[0027] In general formula (c1-1), the AO group is an alkylene oxy group having 2 to 4 carbon atoms, preferably an alkylene oxy group having 2 to 3 carbon atoms, and more preferably an alkylene oxy group selected from the group consisting of ethylene oxy groups and propylene oxy groups. When a nonionic surfactant having the structure represented by general formula (c1-1) contains multiple AO groups, the multiple AO groups may be ethylene oxy groups, or alkylene oxy groups containing an ethylene oxy group and another alkylene oxy group, such as an alkylene oxy group having 3 or 4 carbon atoms. For example, an alkylene oxy group containing an ethylene oxy group and a propylene oxy group is also possible. A propylene oxy group is preferred as the other alkylene oxy group. When the multiple AO groups contain an ethylene oxy group and an alkylene oxy group having 3 or 4 carbon atoms, the ethylene oxy group and the alkylene oxy group having 3 or 4 carbon atoms may be bonded in a block-type or random-type bond. The ethylene oxy group and the propylene oxy group may be bonded in a block-type or random-type bond. If the material contains both an ethyleneoxy group and a propyleneoxy group, the ethyleneoxy group and the propyleneoxy group may be linked in a block or random manner.

[0028] In general formula (c1-1), n ​​is the average number of moles of AO groups added, and is a number between 1 and 30. In general formula (c1-1), from the viewpoint of further improving cleaning performance, n is preferably 3 or more, more preferably 5 or more, even more preferably 7 or more, and 30 or less. From the viewpoint of further improving the effect of removing particulate contaminants, n is preferably 25 or less, more preferably 20 or less, even more preferably 16 or less, even more preferably 14 or less, even more preferably 12 or less, and even more preferably 10 or less. n is a raw material for the compound represented by general formula (c1-1), R 8 (CO) mThe number of moles of alkylene oxide with 2 to 4 carbon atoms added to 1 mole of OH may be one mole, or it may be the average number of moles of alkylene oxide with 2 to 4 carbon atoms added after the addition reaction.

[0029] From the viewpoint of further enhancing the particulate contamination removal effect, the weighted average number of moles of alkylene oxide added to all (c) components contained in the cleaning solution is preferably 2 moles or more, more preferably 3 moles or more, and even more preferably 4 moles or more. On the other hand, from the same viewpoint, the weighted average number of moles of alkylene oxide added is preferably 20 moles or less, more preferably 15 moles or less, and even more preferably 10 moles or less. In this specification, the weighted average number of alkylene oxide addition moles for all (c) components can be determined as follows: The composition contains (c) component 1 with an average added mole count of x1 moles (n1 mass%), component 2 with an average added mole count of x2 moles (n2 mass%), ... and (c) with an average added mole count of xw moles (c) w When a component is present in nw mass%, and the average number of moles added for each component is x1 to xw, the weighted average number of moles of alkylene oxide added for all (c) components contained in the composition, Z, can be calculated using the following formula. Z=(x1×n1+x2×n2+·····+xw×nw) / (n1+n2+···+nw)

[0030] <(d) component> In the present invention, component (d) is an anionic surfactant having one or more groups selected from sulfonic acid groups and sulfate ester groups, or salts thereof. The inclusion of component (d) is optional, but from the viewpoint of cleaning performance against particulate matter, it is preferable to use component (d).

[0031] Component (d) is more preferably one having a group selected from the group consisting of aliphatic hydrocarbon groups having 10 to 20 carbon atoms, sulfonic acid groups, and sulfate ester groups, and is even more preferably one or more anionic surfactants selected from the group consisting of components (d1), (d2), and (d3) below. (d1) Components: Alkyl or alkenyl sulfates or salts thereof (d2) Components: Polyoxyalkylene alkyl or alkenyl ether sulfate esters having an alkylene oxy group or salts thereof (d3) Components: Alkylbenzenesulfonic acid, olefin sulfonic acid, alkanesulfonic acid or salts thereof

[0032] More specifically, component (d1) may be one or more anionic surfactants selected from alkyl sulfate esters with 10 to 18 carbon atoms in the alkyl group, and alkenyl sulfate esters with 10 to 18 carbon atoms in the alkenyl group, or salts thereof. From the viewpoint of further enhancing the particulate dirt removal effect, component (d1) is preferably one or more anionic surfactants selected from alkyl sulfate esters with 12 to 14 carbon atoms in the alkyl group, or salts thereof. Salts of component (d1) may be alkali metal salts, alkaline earth metal (1 / 2 atom) salts, ammonium salts, or organic ammonium salts. Examples of alkali metal salts include sodium salts and potassium salts. Examples of organic ammonium salts include alkanolammonium salts containing alkanolamines with 2 to 6 carbon atoms.

[0033] (d2) More specifically, the component may be one or more anionic surfactants selected from polyoxyalkylene alkyl ether sulfates having 10 to 18 carbon atoms in the alkyl group and an average number of added alkylene oxides of 1 to 3, and polyoxyalkylene alkenyl ether sulfates having 10 to 18 carbon atoms in the alkenyl group and an average number of added alkylene oxides of 1 to 3, or salts thereof. The oxyalkylene group may be an oxyalkylene group having 2 to 3 carbon atoms. The oxyalkylene group may be one or more groups selected from an oxypropylene group and an oxyethylene group.

[0034] From the viewpoint of further enhancing the particulate fouling removal effect, the (d2) component is preferably a polyoxyethylene alkyl ether sulfate salt having an average number of ethylene oxide addition moles of 1 to 2.2, and more preferably a polyoxyethylene alkyl ether sulfate salt having 12 to 14 carbon atoms in the alkyl group and an average number of ethylene oxide addition moles of 1 to 2.2. Examples of salts of component (d2) include alkali metal salts, alkaline earth metal (1 / 2 atom) salts, ammonium salts, or organic ammonium salts. Examples of alkali metal salts include sodium salts and potassium salts. Examples of organic ammonium salts include alkanolammonium salts containing alkanolamines with 2 to 6 carbon atoms.

[0035] More specifically, the (d3) component may include one or more anionic surfactants selected from alkylbenzene sulfonates with 10 to 18 carbon atoms in the alkyl group, alkenylbenzene sulfonates with 10 to 18 carbon atoms in the alkenyl group, alkane sulfonates with 10 to 18 carbon atoms in the alkyl group, α-olefin sulfonates with 10 to 18 carbon atoms in the α-olefin portion, α-sulfo fatty acid salts with 10 to 18 carbon atoms in the fatty acid portion, and α-sulfo fatty acid lower alkyl ester salts and internal olefin sulfonates with 14 to 18 carbon atoms, where the fatty acid portion has 10 to 18 carbon atoms and the ester portion has 1 to 5 carbon atoms.

[0036] Internal olefin sulfonates, which have 16 to 18 carbon atoms, can be obtained by sulfonating internal olefins, which have 16 to 18 carbon atoms. The internal olefin refers to an olefin in which the double bond is located internally from the 2nd position. Internal olefins can be obtained, for example, by isomerizing 1-olefins obtained by dehydrating 1-alcohols. Sulfonation of internal olefins quantitatively generates β-sartone, and a portion of the β-sartone is converted to γ-sartone and olefin sulfonic acid. These are further converted to hydroxyalkane sulfonates and olefin sulfonates in the neutralization and hydrolysis steps (e.g., J. Am. Oil Chem. Soc. 69, 39 (1992)).

[0037] Here, the hydroxyl group of the resulting hydroxyalkanesulfonate is located inside the alkane chain, and the double bond of the olefin sulfonate is located inside the olefin chain. Furthermore, the resulting product is mainly a mixture of these, and may also contain trace amounts of hydroxyalkanesulfonates having a hydroxyl group at the end of the carbon chain, or α-olefin sulfonates having a double bond at the end of the carbon chain. In this specification, these individual products and mixtures thereof are collectively referred to as internal olefin sulfonates. Hydroxyalkanesulfonates are also referred to as the hydroxy derivative of internal olefin sulfonates (hereinafter also referred to as HAS), and olefin sulfonates are also referred to as the olefin derivative of internal olefin sulfonates (hereinafter also referred to as IOS).

[0038] From the viewpoint of further enhancing the particulate contamination removal effect, internal olefin sulfonates with 16 or 18 carbon atoms are preferred. From the viewpoint of further enhancing the particulate dirt removal effect, the (d3) component is preferably one or more anionic surfactants selected from α-olefin sulfonates with 10 to 18 carbon atoms in the α-olefin portion, and internal olefin sulfonates with 14 to 18 carbon atoms.

[0039] (d3) Examples of salts of component (d3) include alkali metal salts, alkaline earth metal (1 / 2 atom) salts, ammonium salts, or organic ammonium salts. Examples of alkali metal salts include sodium salts and potassium salts. Examples of organic ammonium salts include alkanolammonium salts containing alkanolamines with 2 to 6 carbon atoms.

[0040] [(e) component] In the present invention, component (e) is an alkanolamine having 2 to 6 carbon atoms. Examples of alkanolamines having 2 to 6 carbon atoms include one or more compounds selected from monoethanolamine, diethanolamine, methyldiethanolamine, and triethanolamine, or salts thereof, and from the viewpoint of further enhancing the particulate contamination removal effect, monoethanolamine or a salt thereof is preferred. Component (e) also includes compounds contained in the composition as counterions of component (d) above.

[0041] [(g) ingredient] Component (g) is a fatty acid or salt thereof containing 12 carbon atoms or a salt thereof, or a fatty acid with 12 to 24 carbon atoms. By including component (g) in the cleaning solution, particulate dirt can be removed more efficiently. Fatty acids having 12 to 24 carbon atoms or salts thereof are compounds having an aliphatic hydrocarbon group having 11 to 23 carbon atoms as a hydrophobic group and a carboxylic acid or salt thereof as a hydrophilic group. More specifically, examples include lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid, or salts thereof. Component (g) may be contained in the composition as an acid or as a salt. Alkali metal ions are preferred as counterions constituting the salt, sodium ions and potassium ions are more preferred, and sodium ions are even more preferred. As a fatty acid with 12 carbon atoms, a straight-chain saturated fatty acid, namely lauric acid, is preferred.

[0042] The content of component (g) in the composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.4% by mass or more, and even more preferably 0.6% by mass or more, from the viewpoint of further enhancing the particulate fouling removal effect, and preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and even more preferably 3% by mass or less, from the viewpoint of reducing the amount of waste released into the environment. The content of component (g) shall be expressed as the content converted to the acid type.

[0043] 〔water〕 The cleaning solution in this invention contains water. The water can be deionized water (sometimes called ion-exchanged water) or water to which sodium hypochlorite has been added at a rate of 1 mg / kg to 5 mg / kg. Tap water can also be used.

[0044] <Composition of the cleaning solution> The cleaning solution in this invention can be prepared by mixing each essential component, water, and optional components as needed. The content of component (b) in the cleaning solution is 3 mg / kg or more, preferably 5 mg / kg or more, and more preferably 10 mg / kg or more, from the viewpoint of removing particulate matter. On the other hand, from the viewpoint of reducing the amount of waste released into the environment, the content of component (b) in the cleaning solution is 50 mg / kg or less, preferably 40 mg / kg or less, and more preferably 30 mg / kg or less.

[0045] The total amount of component (c) and any component (d) in the cleaning solution is 50 mg / kg or more, preferably 70 mg / kg or more, and more preferably 100 mg / kg or more, from the viewpoint of removing particulate matter. On the other hand, from the viewpoint of reducing the amount of waste discharged into the environment, the total amount in the cleaning solution is 1000 mg / kg or less, preferably 500 mg / kg or less, and more preferably 300 mg / kg or less.

[0046] If the cleaning solution contains component (d), the content of component (d) in the cleaning solution is preferably 10 mg / kg or more, more preferably 50 mg / kg or more, and even more preferably 100 mg / kg or more, from the viewpoint of removing particulate contaminants. On the other hand, from the viewpoint of having an excellent particulate contaminant removal effect even without using a large amount of component (d), the content of component (d) in the cleaning solution is preferably 500 mg / kg or less, more preferably 300 mg / kg or less, even more preferably 100 mg / kg or less, even more preferably 50 mg / kg or less, and even more preferably 20 mg / kg or less.

[0047] From the viewpoint of further enhancing the particulate dirt removal effect, the content of component (e) in the cleaning solution is preferably 2 mg / kg or more, more preferably 5 mg / kg or more, and even more preferably 10 mg / kg or more. On the other hand, from the same viewpoint, the content of component (e) in the cleaning solution is preferably 40 mg / kg or less, more preferably 30 mg / kg or less, and even more preferably 20 mg / kg or less. In the present invention, the content of component (e) in the cleaning solution represents the content as an amine.

[0048] From the viewpoint of removing particulate matter, the content of component (g) in the cleaning solution is preferably 2 mg / kg or more, more preferably 5 mg / kg or more, and even more preferably 10 mg / kg or more. On the other hand, from the same viewpoint, the content of component (g) in the cleaning solution is preferably 70 mg / kg or less, more preferably 50 mg / kg or less, and even more preferably 30 mg / kg or less.

[0049] The water content in the cleaning solution is preferably 95% by mass or more, more preferably 97% by mass or more, and even more preferably 99% by mass or more. On the other hand, it is preferably 99.9% by mass or less, more preferably 99.5% by mass or less, and even more preferably 99.3% by mass or less.

[0050] The mass ratio of the content of component (d) to the content of component (c) in the cleaning solution (component (d) / component (c)) is 0 or greater, preferably 0.05 or greater, and more preferably 0.1 or greater, from the viewpoint of removing particulate contaminants. On the other hand, from the same viewpoint, the mass ratio is 0.5 or less, preferably 0.3 or less, and more preferably 0.2 or less.

[0051] <Optional ingredients> The cleaning solution in this invention may contain the following components as optional components.

[0052] <Fluorescent whitening agent> The cleaning solution in the present invention may contain a fluorescent whitening agent. The fluorescent whitening agent is not particularly limited as long as it is known in the field of cleaning agents for textile products, but preferably it is a fluorescent whitening agent having a sulfonic acid group or a salt thereof. More preferably, the fluorescent whitening agent contains a fluorescent whitening agent having a sulfonic acid group or a salt thereof and a biphenyl group, and even more preferably it contains a 4,4'-bis(2-sulfostyryl)biphenyldialkali metal salt. The cleaning solution may contain one type of fluorescent whitening agent, or two or more types.

[0053] Preferred examples of fluorescent whitening agents include 4,4'-bis(2-sulfostyryl)biphenyl dialkali metal salts (preferably sodium) and 4,4'-bis(2-sulfo-4 chlorostyryl)biphenyl dialkali metal salts (preferably sodium), with 4,4'-bis(2-sulfostyryl)biphenyl disodium being particularly preferred in terms of whitening effect. As stilbene-type fluorescent whitening agents, compounds of the following general formula (A) are more preferred, and those in which M is sodium are even more preferred.

[0054] [ka]

[0055] The content of the fluorescent whitening agent in the washing solution is preferably 0.1 mg / kg or more, and preferably 1 mg / kg or less.

[0056] [(f) component] The composition of the present invention may contain an inorganic salt (component (f)) from the viewpoint of improving the stability of the enzyme.

[0057] The inorganic salt may contain one or more inorganic salts selected from alkali metal halides, alkali metal sulfates, alkaline earth metal halides, and alkaline earth metal sulfates. Examples of alkali metal halides include sodium chloride and potassium chloride. Examples of alkali metal sulfates include sodium sulfate and potassium sulfate. Examples of alkaline earth metal halides include calcium chloride and magnesium chloride. Examples of alkaline earth metal sulfates include magnesium sulfate.

[0058] The content of component (f) in the washing solution is preferably 0.1 mg / kg or more, and preferably 3 mg / kg or less.

[0059] [(h) component] In the present invention, component (h) is one or more compounds selected from monovalent to tetravalent carboxylic acids or hydroxycarboxylic acids (excluding those containing a nitrogen atom) having a hydrocarbon group with 1 to 6 carbon atoms, or salts thereof.

[0060] Specifically, preferred (h) components include glycolic acid, lactic acid, malonic acid, succinic acid, maleic acid, malic acid, tartaric acid, citric acid (mp153℃), benzoic acid, or salts thereof. From the viewpoint of odor, one or more selected from glycolic acid, citric acid, lactic acid, benzoic acid, or salts thereof are preferred, and citric acid or a salt thereof is more preferred.

[0061] The content of component (h) in the washing solution is preferably 3 mg / kg or more, and preferably 20 mg / kg or less. The content of component (h) here shall be calculated as the acidic form.

[0062] [(j) component] The composition of the present invention may contain an organic solvent having a hydroxyl group as component (j). Component (j) is preferably an organic solvent having a hydroxyl group with a CLogP of -2.0 or higher and 2.0 or lower. In the present invention, CLogP is calculated using ChemProperty from Perkin Elmer's ChemBio Draw Ultra ver.14.0. A higher ClogP value indicates higher hydrophobicity.

[0063] (j) Component is an organic solvent having hydroxyl groups, preferably with a CLogP of -2.0 or higher, more preferably -1.8 or higher, even more preferably -1.5 or higher, even more preferably -1.2 or higher, even more preferably -1.0 or higher, even more preferably 0 or higher, even more preferably 0.5 or higher, and preferably 2.0 or lower, more preferably 1.8 or lower, and even more preferably 1.5 or lower, from the viewpoint of storage stability.

[0064] (j) The component may be one or more organic solvents selected from the following components (j1) to (j4). (j1) Components: Monohydric alcohol with 2 to 6 carbon atoms. (j2) Components: Alcohols with 2 to 12 carbon atoms and a valency of 2 to 12. (j3) Components: Organic solvents having hydrocarbon groups, ether groups, and hydroxyl groups with 1 to 8 carbon atoms (however, hydrocarbon groups exclude aromatic groups). (j4) Components: Organic solvent having aromatic groups, ether groups, and hydroxyl groups, which may be partially substituted.

[0065] Specific examples of components (j1) to (j4) are shown below. The numbers in parentheses are the calculated values ​​(CLogP) of each component obtained using the above ChemProperty.

[0066] (j1) Examples of monohydric alcohols having 2 to 6 carbon atoms, which are component (j1), include ethanol (-0.24), 1-propanol (0.29), 2-propanol (0.07), and phenol (1.48).

[0067] (j2) Examples of alcohols having 2 to 12 carbon atoms and a valency of 2 to 12 include ethylene glycol (-1.4), propylene glycol (-1.1), butylene glycol (-0.73), hexylene glycol (-0.02), diethylene glycol (-1.3), triethylene glycol (-1.5), tetraethylene glycol (-1.66), dipropylene glycol (-0.69), tripropylene glycol (-0.55), and glycerin (-1.5).

[0068] (j3) The component is an organic solvent having hydrocarbon groups, ether groups, and hydroxyl groups with 1 to 8 carbon atoms (however, hydrocarbon groups exclude aromatic groups), for example, diethylene glycol monomethyl ether (-0.78), triethylene glycol monomethyl ether (-0.96), diethylene glycol monoethyl ether (-0.39), diethylene glycol diethyl ether (0.52), diethylene glycol monobutyl ether (0.67), dipropylene glycol monomethyl ether (-0.16), dipropylene glycol monoethyl ether (0.23), tripropylene glycol monomethyl ether ( Examples include (-0.03), 1-methoxy-2-propanol (-0.30), 1-ethoxy-2-propanol (0.09), 1-methylglycerin ether (-1.43), 2-methylglycerin ether (-0.73), 1,3-dimethylglycerin ether (-0.67), 1-ethylglycerin ether (-1.04), 1,3-diethylglycerin ether (0.11), triethylglycerin ether (0.83), 1-pentylglyceryl ether (0.54), 2-pentylglyceryl ether (1.25), 1-octylglyceryl ether (2.1), and 2-ethylhexylglyceryl ether (2.0).

[0069] (j4) Examples of organic solvents having aromatic groups, ether groups, and hydroxyl groups, which may be partially substituted, include 2-phenoxyethanol (1.2), diethylene glycol monophenyl ether (1.25), triethylene glycol monophenyl ether (1.08), polyethylene glycol monophenyl ether with an average molecular weight of approximately 480 (cannot be calculated), 2-benzyloxyethanol (1.1), and diethylene glycol monobenzyl ether (0.96).

[0070] (j) Component is preferably one or more selected from phenoxyethanol, diethylene glycol monobutyl ether, ethanol, propylene glycol, and ethylene glycol, more preferably one or more selected from phenoxyethanol, diethylene glycol monobutyl ether, propylene glycol, and ethanol, even more preferably one or more selected from phenoxyethanol, diethylene glycol monobutyl ether, and ethanol, and even more preferably one or more selected from phenoxyethanol and diethylene glycol monobutyl ether.

[0071] The content of component (j) in the washing solution is preferably 3 mg / kg or more, and preferably 50 mg / kg or less.

[0072] [(k) component] Component (k) is a soil-releasing agent. The term "soil-releasing agent" is sometimes used to refer to a dirt-releasing agent. Soil-releasing agents are known as compounds that, when applied to textile products before use, such as wearing them, improve the removal of dirt from textile products during post-use washing, even if dirt adheres to the textile product during use. In the present invention, by using a soil-releasing agent as one of the components contained in the textile product cleaning agent composition, it is possible to clean the textile product and apply the soil-releasing agent to the textile product simultaneously, which is efficient.

[0073] (k) component may include, for example, one or more polysaccharide derivatives having one or more groups selected from a cationic group and a hydrocarbon group having 1 to 18 carbon atoms as component (k1), one or more polymers having one or more units selected from alkylene terephthalate units and alkylene isophthalate units, and an oxyalkylene unit as component (k2), and one or more polyalkylene imine polymers having a polyoxyalkylene group as component (k3), and a polymer selected from two or more monomers having one or more hydrophilic groups selected from monomers having a cationic group, a polyoxyalkylene group, a carboxyl group or its salt, a sulfonic acid group or its salt, a sulfate ester group or its salt, and a polymer selected from two or more monomers having one or more hydrophobic groups selected from aliphatic hydrocarbon groups having 3 to 18 carbon atoms, an aromatic hydrocarbon group, and a cycloalkyl group.

[0074] The (k1) component is one or more polysaccharide derivatives having one or more groups selected from hydrocarbon groups and cationic groups having 1 to 18 carbon atoms. The (k1) component in the present invention is characterized by being a polysaccharide derivative in which one or more groups selected from a cationic group and a hydrocarbon group having 1 to 18 carbon atoms are bonded directly or via a linking group to a group obtained by removing a hydrogen atom from the hydroxyl group of a polysaccharide or a derivative thereof, which is a precursor compound of the (k1) component. It should be noted that the phrase "one or more groups selected from a cationic group and a hydrocarbon group having 1 to 18 carbon atoms are bonded directly or via a linking group to a group obtained by removing a hydrogen atom from the hydroxyl group of a polysaccharide or a derivative thereof" does not include bonding modes in which a cationic atom of a cationic group, such as a nitrogen cation, is directly covalently bonded to the oxygen atom of the hydroxyl group of the polysaccharide or a derivative thereof.

[0075] Examples of polysaccharides include one or more polysaccharides selected from cellulose, guar gum, or starch. Component (k1) is a polysaccharide derivative, but a polysaccharide derivative can be used as a precursor compound to obtain it. That is, component (k1) may be a derivative of a polysaccharide derivative. Examples of polysaccharide derivatives that are precursor compounds of component (k1) include polysaccharide derivatives in which some or all of the hydrogen atoms of the hydroxyl group of the polysaccharide are substituted with a hydroxyalkyl group having 1 to 4 carbon atoms (hereinafter also referred to as a hydroxyalkyl substituted product). The hydroxyalkyl group having 1 to 4 carbon atoms is preferably a hydroxyalkyl group having 2 to 4 carbon atoms. Examples of hydroxyalkyl groups having 2 to 4 carbon atoms include one or more groups selected from hydroxyethyl, hydroxypropyl, and hydroxybutyl groups, with one or more groups selected from hydroxyethyl and hydroxypropyl groups being preferred. The (k1) component may be a compound obtained by introducing one or more groups selected from hydrocarbon groups and cationic groups having 1 to 18 carbon atoms into a polysaccharide or polysaccharide derivative selected from one or more polysaccharides selected from cellulose, guar gum, or starch, or from hydroxyalkyl substituted products thereof.

[0076] The (k2) component is a polymer having one or two units selected from alkylene terephthalate units and alkylene isophthalate units, as well as oxyalkylene units. Examples of alkylene terephthalate units include one or more selected from ethylene terephthalate units, propylene terephthalate units, and butylene terephthalate units, with ethylene terephthalate units being preferred among these. Examples of alkylene isophthalate units include one or more selected from ethylene isophthalate units, propylene isophthalate units, and butylene isophthalate units, with ethylene isophthalate units being preferred among these. Examples of polyoxyalkylene units include one or more selected from polyoxyethylene units, polyoxypropylene units, and polyoxyethylene-polyoxypropylene units.

[0077] The molar ratio of oxyalkylene units to one or more units selected from alkylene terephthalate units and alkylene isophthalate units, which is (number of moles of oxyalkylene units) / (number of moles of one or more units selected from alkylene terephthalate units and alkylene isophthalate units), is preferably 0.6 or less, more preferably 0.5 or less, even more preferably 0.4 or less, and preferably 0 or more, and more preferably 0.1 or more, from the viewpoint of further improving cleaning performance.

[0078] The weight-average molecular weight of component (k2) is preferably 300 or more, more preferably 500 or more, even more preferably 1000 or more, and preferably 20000 or less, and more preferably 15000 or less, from the viewpoint of improving adsorption to textile products and thereby improving the cleanability of dirt attached to textile products after use. Note that the weight-average molecular weight of component (k2) is the value obtained by measuring the value by GPC (gel permeation chromatography) using THF (tetrahydrofuran) as the solvent and converting it based on the calibration curve for PEG (polyethylene glycol).

[0079] Component (k3) is a polyalkyleneimine polymer having a polyoxyalkylene group. The oxyalkylene group of the polyoxyalkylene group can be an oxyalkylene group having 2 to 3 carbon atoms, specifically one or more groups selected from oxyethylene groups and oxypropylene groups. The alkylene group of the polyalkyleneimine can be an alkylene group having 2 to 6 carbon atoms. More specifically, one or more groups selected from ethylene groups and butylene groups having various bonding modes can be selected. The number of polyoxyalkylene groups bonded to the polyalkyleneimine is preferably such that an average of 3 to 100 polyoxyalkylene groups are bonded to each active hydrogen atom of the polyalkyleneimine. The weight-average molecular weight of the polyalkyleneimine polymer is preferably 300 or more, more preferably 500 or more, even more preferably 1000 or more, and preferably 1,000,000 or less, more preferably 500,000 or less, and even more preferably 100,000 or less, from the viewpoint of further improving the cleanability of dirt attached to textile products.

[0080] Examples of compounds of (k4) include the compounds described in Japanese Patent Publication No. 2007-247126. More specifically, the present invention provides a fiber stain-removing agent comprising a polymer having the following constituent units (k4A) and (k4B), wherein the content of constituent unit (k4A) in the polymer is 1 to 99% by weight, the content of constituent unit (k4B) is 1 to 50% by weight, and which also has an arbitrary constituent unit (k4C), and having a weight-average molecular weight of 2,000 to 300,000, as well as a method for treating fibers, which involves treating fibers in an aqueous solution containing this stain-removing agent and adjusted to a pH of 2 to 9. (k4A) Constituent unit derived from an unsaturated bond-containing monomer having at least one amino group selected from primary to tertiary amino groups. (k4B) A constituent unit derived from an unsaturated bond-containing monomer having at least one hydrophobic group selected from linear, branched, or cyclic alkyl or alkenyl groups, or arylalkyl or aryl groups, having 4 to 22 carbon atoms, and not having a primary to tertiary amino group.

[0081] The polymer in this invention can preferably be obtained by copolymerizing monomer (k4A) and monomer (k4B). In addition to monomer (k4A) and monomer (k4B), an unsaturated bond-containing monomer (hereinafter referred to as monomer (k4C)) that can copolymerize with monomer (k4A) and monomer (k4B) may also be copolymerized to the extent that the effects of this invention are not impaired.

[0082] Examples of monomers (k4A) include (meth)acrylic acid esters, (meth)acrylamides, styrenes, and diallyl compounds, all of which have an amino group. Here, "(meth)acrylic" means acrylic or methacrylic. Examples of monomers (k4B) include at least one selected from (meth)acrylic acid esters, (meth)acrylamides, vinyl esters and vinyl ethers, and styrenes, which have a linear, branched, or cyclic alkyl or alkenyl group or arylalkyl group having 4 to 22 carbon atoms, preferably 8 to 22 carbon atoms, and more preferably 12 to 22 carbon atoms. Examples of monomers (k4C) include (meth)acrylic acid esters or (meth)acrylamides having a hydroxyalkyl group with 1 to 22 carbon atoms, (meth)acrylic acid esters having a polyalkylene (alkylene group with 1 to 8 carbon atoms; linear or branched) oxide chain, (meth)acrylic acid esters of polyhydric alcohols; acrylamides, vinyl compounds having a carboxyl group, vinyl compounds having a sulfonic acid group, and the like.

[0083] The polymer in this invention contains 50% by weight or more of the constituent unit (i4A) relative to the total weight of the constituent units of the polymer. From the viewpoint of adsorption, 60% by weight or more is preferred, and 70% by weight or more is more preferred. The upper limit is 99% by weight or less, 95% by weight or less is preferred, and 90% by weight or less is more preferred. Furthermore, it contains 1% by weight or more of the constituent unit (k4B), preferably 3% by weight or more, more preferably 5% by weight or more, and even more preferably 10% by weight or more. The upper limit is 50% by weight or less, and preferably 45% by weight or less. The copolymerization amount of these monomers (k4C) is preferably 0 to 49% by weight, more preferably 0 to 40% by weight, and even more preferably 0 to 30% by weight, relative to the total amount of monomers. In the present invention, the weight-average molecular weight of the polymer is 2,000 to 30,000, and preferably 2,000 to 20,000, from the viewpoint of ease of controlling adsorption / desorption to fibers.

[0084] Furthermore, the weight-average molecular weight (Mw) of the polymer in this invention shall be the value obtained by gel permeation chromatography (GPC). The eluent shall be one of the following: water, alcohol, chloroform, dimethylformamide, tetrahydrofuran, acetonitrile, or a combination of these solvents, and the molecular weight shall be expressed in terms of polyethylene oxide or polystyrene. The polymer structure can be random, grafted, or blocked, but random or grafted is preferred, with random being more preferred.

[0085] The content of component (k) in the washing solution is preferably 1 mg / kg or more, and preferably 10 mg / kg or less.

[0086] [(m) component] The liquid detergent composition for textile products of the present invention may contain an enzyme. As component (m), from the viewpoint of further enhancing the cleaning effect, one or more enzymes selected from protease, lipase, and amylase are preferred, and one or more enzymes selected from protease and amylase are more preferred.

[0087] The optimal pH of the protease at 35°C is preferably 4 or higher, more preferably 7 or higher, even more preferably 8 or higher, even more preferably 9 or higher, even more preferably 9.5 or higher, and preferably 12 or lower, more preferably 11 or lower, from the viewpoint of further enhancing the washing effect. Suitable proteases used in the present invention include serine proteases (EC 3.4.21) and metalloproteases (EC 3.4.17 or EC 3.4.24). Examples of suitable proteases include neutral or alkaline serine proteases such as subtilisin (EC 3.4.21.62).

[0088] The origin of the protease is not limited, but may be of animal, plant, or microbial origin, with those of microbial origin such as bacteria or fungi being preferred. More suitable proteases include chemically or genetically modified mutants of the aforementioned suitable proteases. In one embodiment, the suitable protease may be an alkaline microbial protease and / or a serine protease such as a trypsin-type protease.

[0089] Suitable commercially available proteases include those sold as Alcalase, Duralase, Durazyme, Relax, Relax Ultra, Savinase, Savinase Ultra, Savinase Evity, Primase, Polarzyme, Kannase, Liquanase, Liquanase Ultra, Liquanase Evity, Ovozyme, Coronase, Coronase Ultra, Coronase Evity, Neutrase, Everlase, Progress Uno, Progress Key, Progress Excel, Blaze, Blaze Evity, Blaze Exceed, and Esperase from Novozymes A / S, and from Danisco / DuPont: Preferenz P, Effectenz P, Excellentz P, Maxatase, Maxacal, Maxapem, Purafect, Purafect Prime, Purafect MA, Purafect Ox, and Purafect Examples of suitable enzymes include, but are not limited to, enzymes marketed as OxP, Puramax, Properase, Purafast, FN2, FN3, FN4, Excellase, Opticlean, and Optimase; enzymes marketed as Axapem by Gist-Brocases NV; BLAP (the sequence shown in Figure 29 of U.S. Patent No. 5,352,604) and its variants (Henkel AG) by Henkel AG; and enzymes marketed as Lavergy Pro by BASF. Alkaline proteases described in Japanese Patent No. 3479509 and their variants are also preferred.

[0090] The optimal pH of lipase at 35°C is preferably 4 or higher, more preferably 7 or higher, even more preferably 8 or higher, even more preferably 9 or higher, even more preferably 9.5 or higher, and preferably 12 or lower, more preferably 11 or lower, from the viewpoint of further enhancing the washing effect.

[0091] Suitable lipases used in the present invention include, for example, triacylglycerol lipase (EC3.1.1.3), phospholipase A2 (EC3.1.1.4), lysophospholipase (EC3.1.1.5), monoglyceride lipase (EC3.1.1.23), galactolipase (EC3.1.1.26), phospholipase A1 (EC3.1.1.32), and lipoprotein lipase (EC3.1.1.34). Examples include lipases and cutinases from the genera Bacillus, Thermomyces, Pseudomonas, Humicola, and Streptomyces, and furthermore, chemically or genetically modified mutants of these enzymes may also be used. Suitable commercially available lipases include, but are not limited to, those sold by Novozymes A / S as Lipolase, Lipex, Lipex Evity, Lipolex, and Lipoclean, and those sold by Danisco / DuPont as Preferenz L, Lumafast, and Lipomax.

[0092] The optimal pH of amylase at 35°C, from the viewpoint of further enhancing the washing effect, is preferably 4 or higher, more preferably 7 or higher, even more preferably 8 or higher, even more preferably 9 or higher, even more preferably 9.5 or higher, and preferably 12 or lower, more preferably 11 or lower.

[0093] Suitable amylases for use in the present invention include α-amylase (EC3.2.1.1), β-amylase (EC3.2.1.2), and / or glucoamylase (EC3.2.1.3). Examples of suitable amylases include neutral or alkaline α-amylases, preferably of microorganismal origin such as bacteria or fungi. Examples of neutral or alkaline amylases include those derived from Bacillus licheniformis, Bacillus amyloliquefaciens, Bacillus stearothermo, Bacillus subutilis, or other species of the genus Bacillus, as well as chemically or genetically modified mutants thereof. Suitable commercially available amylases include, but are not limited to, those sold by Novozymes A / S as Duramyl, Termamyl, Termamyl Ultra, Fungamyl, Stainzyme, Stainzyme Plus, Amplify, Amplify Prime, Natalase, Supramyl, Liquozyme X, and BAN, and those sold by Danisco / DuPont as Preferenz S, Effectenz S, Rapidase, Purastar, and Powerase.

[0094] The content of component (m) in the washing solution is preferably 3 mg / kg or more, and preferably 20 mg / kg or less.

[0095] [(n) component] Examples of the enzyme stabilizer as the component (n) include boron compounds, calcium ion sources (calcium ion supply compounds), and dihydroxy compounds. Examples of boron compounds include borax, boric acid, and sodium borate; examples of calcium ion sources include calcium chloride and calcium acetate; and examples of dihydroxy compounds include glycerin, 1,2 - hexanediol, 1,2 - dodecanediol, glucose, sorbitol, and maltose. Among them, calcium chloride is particularly excellent in terms of economy.

[0096] The content of the component (n) in the cleaning liquid is preferably 0.1 mg / kg or more and preferably 5 mg / kg or less.

[0097] The cleaning liquid can contain, as other components, other components known in the field of detergents for textile products, such as bleaching agents (perborates, bleach activators, etc.), anti - redeposition agents, reducing agents (sulfites, etc.), defoaming agents (silicones, etc.), fragrances, colorants, antibacterial agents, etc. (excluding those corresponding to the component (b)).

[0098] 〔pH of the cleaning liquid〕 From the viewpoint of enhancing the removal effect of particulate soil, the pH (25 °C) of the cleaning liquid is preferably 5 or more, more preferably 6 or more, still more preferably 6.5 or more, even more preferably 7 or more, and from the same viewpoint, it is preferably 10 or less, more preferably 9.5 or less, still more preferably 9 or less, and even more preferably 8.5 or less.

[0099] <Method for measuring pH> Connect the pH measuring composite electrode (HORIBA glass ground-joint sleeve type) to the pH meter (HORIBA pH / ion meter F-23) and turn on the power. Use saturated potassium chloride aqueous solution (3.33 mol / L) as the internal solution for the pH electrode. Next, fill 100 mL beakers with pH 4.01 standard solution (phthalate standard solution), pH 6.86 (neutral phosphate standard solution), and pH 9.18 standard solution (borate standard solution), and immerse them in a 25°C constant temperature bath for 30 minutes. Immerse the pH measuring electrode in the standard solutions adjusted to constant temperature for 3 minutes and perform calibration in the order of pH 9.18 → pH 4.01 → pH 6.86. Adjust the sample to be measured to 25°C, immerse the electrode of the pH meter in the sample, and measure the pH after 1 minute.

[0100] <Cleaning method> The present invention relates to a method for cleaning textile products, which involves using a cleaning solution of the above-described specific composition to clean particulate dirt adhering to the textile product. The present invention relates to a cleaning method that can be applied to both hand washing and machine washing.

[0101] Specific embodiments of the cleaning method of the present invention include, for example, an embodiment that includes a cleaning step of cleaning a textile product to which particulate dirt is attached with the cleaning solution in a cleaning tank.

[0102] The duration of the washing process is preferably 1 minute or more, more preferably 3 minutes or more, and even more preferably 5 minutes or more, from the viewpoint of further enhancing the effect of removing particulate contaminants, while preferably 60 minutes or less, more preferably 40 minutes or less, and even more preferably 20 minutes or less, from the viewpoint of suppressing the re-adhesion of the removed particulate contaminants.

[0103] The temperature of the cleaning solution in the cleaning process is preferably 0°C or higher, more preferably 4°C or higher, and even more preferably 10°C or higher, from the viewpoint of further enhancing the effect of removing particulate contaminants, while from the viewpoint of reducing the energy load required for cleaning, it is preferably 50°C or lower, more preferably 40°C or lower, and even more preferably 30°C or lower.

[0104] In the washing process, the bath ratio, which is the ratio of the volume of washing solution (liters) to the mass (kg) of the textile product to which particulate dirt is attached, i.e., the volume of washing solution (liters) / mass (kg) of the textile product, is preferably 3 or more, more preferably 5 or more, and even more preferably 10 or more, from the viewpoint of further enhancing the effect of removing particulate dirt, and from the same viewpoint, it is preferably 50 or less, more preferably 40 or less, and even more preferably 30 or less.

[0105] In the washing process, when a washing machine is used, it is preferable to use a rotary washing machine and perform rotary washing. Rotary washing refers to a washing method in which the washing tub is fixed to a rotating machine, and textile products that are not fixed to the rotating machine rotate around a rotating shaft together with the washing liquid. Therefore, the method for washing textile products of the present invention is preferably performed using a rotary washing machine. Specifically, rotary washing machines include drum-type washing machines, pulsator-type washing machines, and agitator-type washing machines. These rotary washing machines can be those that are commercially available for household use.

[0106] [Liquid detergent composition for textile products to clean particulate dirt] The liquid detergent composition for textile products for cleaning particulate dirt according to the present invention comprises component (b), component (c), optional component (d), component (e), component (g), and water. Components (b), (c), (d), (e), (g), and water are the same as those described in the "Washing Method for Textile Products" section above. Furthermore, the liquid detergent composition for textile products of the present invention may contain optional components as needed, and the various optional components are the same as those described in the "Method for Cleaning Textile Products" section above. The cleaning solution used in the cleaning method of the present invention can be prepared by using the liquid cleaning agent composition for textile products of the present invention as is, or by diluting it with water.

[0107] The composition of the liquid detergent composition for textile products of the present invention can be applied by substituting the content and mass ratio of each component in the detergent solution in the cleaning method of the present invention with the content of each component. [Examples]

[0108] The present invention will be specifically described below with reference to examples. Note that the following examples are merely illustrative of the present invention and do not imply any limitation.

[0109] <Composition ingredients> The following components were used in the examples and comparative examples.

[0110] [(b) component] (b-1): A mixture containing 80% by mass of dioctylethylmethylammonium ethyl sulfate, 2% by mass of dioctylmethylamine, and 18% by mass of ethanol. *The values ​​in the table represent the amount of dioctylethylmethylammonium ethyl sulfate.

[0111] [(b') component] (b'-1): A mixture containing 80% by mass of didecylethylmethylammonium ethyl sulfate, 2% by mass of didecylmethylamine, and 18% by mass of ethanol. *The values ​​in the table represent the amount of didecylethylmethylammonium ethyl sulfate.

[0112] [(c) component] (c-1): In the above general formula (c1-1), R 8 is a mixed alkyl group (lauryl group / myristyl group = 7 / 3 (mass ratio)), m is 0, (AO)n is a group obtained by adding 4 moles of propylene oxy to an alcohol with a mixed alkyl group as the hydrocarbon group, and then adding 17 moles of ethylene oxy group (n=21), R 9 is a compound of H (c-2): In the above general formula (c1-1), R 8 (A) is a lauryl group, m is 0, (AO) is an ethylene oxy group, n is 10, R 9 is a compound of H (c-3): In the above general formula (c1-1), R 8 (AO) is a secondary mixed alkyl group (12-14 carbon atoms), m is 0, (AO) is an ethylene oxy group, n is 3, R 9is a compound of H

[0113] [(d) component] (d-1): Potassium C16 internal olefin sulfonate obtained by the following manufacturing method

[0114] • Production of C16 internal olefin a1 Internal olefin a1 with 16 carbon atoms, which is the raw material for component (d-1), was produced according to the method described below. The internal olefin with 16 carbon atoms was produced in accordance with production example C of Japanese Patent Application Publication No. 2014-76988. The double bond distribution of the internal olefin is as follows. In internal olefin a1, the mass percentage of internal olefins with double bonds at the following positions was 1st / 2nd / 3rd / 4th / 5th / 6th / 7th / 8th = 2.3% / 23.6% / 18.9% / 17.5% / 13.7% / 11.2% / 6.4% / 6.4% (total 100 mass%).

[0115] The double bond distribution of the internal olefin a1 was measured by gas chromatography (hereinafter abbreviated as GC). Specifically, the internal olefin was reacted with dimethyl disulfide to form a dithiolated derivative, and then each component was separated by GC. As a result, the proportion of the double bond distribution of the internal olefin was determined from the peak area of ​​each component, and this proportion was taken as the mass proportion. Note that in olefins with 16 carbon atoms, internal olefins with a double bond at position 7 and internal olefins with a double bond at position 8 are structurally indistinguishable, but they become distinguishable when sulfonated. For convenience, the amount of internal olefin with a double bond at position 7 was divided by 2 and shown in each column. The apparatus and analytical conditions used for the measurement are as follows. GC system "HP6890" (manufactured by Hewlett Packard), column "Ultra-Alloy-1HT capillary column" (30m x 250μm x 0.15μm, manufactured by Frontier Labs Co., Ltd.), detector (flame ion detector (FID)), injection temperature 300℃, detector temperature 350℃, He flow rate 4.6mL / min

[0116] Manufacturing of (d-1) The aforementioned internal olefin a1 was subjected to a sulfonation reaction using a thin-film sulfonation reactor with an external jacket, by passing sulfur trioxide gas and cooling water at 20°C through the reactor's external jacket. The molar ratio of SO3 to internal olefin during the sulfonation reaction was set to 1.09. The obtained sulfonate was added to an alkaline aqueous solution prepared with 1.5 molar times the theoretical acid value of potassium hydroxide, and neutralized at 30°C for 1 hour with stirring. The neutralized product was hydrolyzed by heating in an autoclave at 160°C for 1 hour to obtain a crude potassium sulfonate product of the C16 internal olefin. 300 g of the crude product was transferred to a separatory funnel, 300 mL of ethanol was added, and then 300 mL of petroleum ether was added in each step to extract and remove oil-soluble impurities. At this time, inorganic compounds (mainly potassium sulfate) precipitated at the oil-water interface due to the addition of ethanol were also separated and removed from the aqueous phase by oil-water separation. This extraction and removal operation was performed three times. Potassium olefin sulfonate was obtained by evaporating the aqueous phase to dryness.

[0117] [(e) component] (e-1): Monoethanolamine

[0118] [Optional ingredients] Butylcarbitol • Citric acid (used as a 50% by mass aqueous solution) • Cationic polymer (compound obtained in Synthesis Example 1 of Japanese Patent Publication No. 2007-247126) • Fluorescent whitening agent (4,4'-bis(2-sulfostyryl)biphenyl disodium salt, Chinopar CBS-X, manufactured by BASF) • Calcium chloride (used as a 10% by mass aqueous solution) • Protease ·amylase • Fragrance composition (Fragrance composition described in paragraph 0061 of Japanese Patent Publication No. 2016-204508) • Dyes (The following mixed dyes: Green No. 202 / Yellow No. 203 / Red No. 106 / Blue No. 1 = 5 / 1 / 3 / 1 by mass)

[0119] Examples 1-7 and Comparative Example 1 <Preparation of a liquid detergent composition for textile products to clean particulate dirt> Using the above-mentioned ingredients, the textile cleaning agents shown in Table 2 were prepared by the following method. 90% of the amount of water needed to produce a final mass of 400g was placed in a 500ml glass beaker and heated to 40°C in a water bath. A 6cm diameter Teflon® rod-shaped stirrer bead was placed inside and rotated at 60 r / m with a magnetic stirrer. Next, the specified amounts of optional component (e) were added and stirred for 5 minutes, then components (c) and (d) were added and stirred for 15 minutes. Then, a mixture containing component (b) or (b') heated to 40°C in the proportions shown in the table was added and stirred for another 5 minutes. Component (g) melted at 60°C was added and stirred for another 10 minutes, and the pH was adjusted to 7.5 (40°C) with a 10% by mass sodium hydroxide solution or a 1% by mass hydrochloric acid aqueous solution. The remaining amount of water needed to produce a final mass of 100% by mass was added and stirred for 5 minutes, then the temperature was adjusted to 25°C while stirring in a 10°C water bath. The pH of the composition was measured again and adjusted to 7.5 (25°C) with a 10% by mass sodium hydroxide solution or a 1% by mass hydrochloric acid aqueous solution.

[0120] [Method for evaluating mud-cleaning power] Assuming mud contamination as particulate matter, each composition prepared in the above examples and comparative examples was evaluated using the following evaluation method. Five mud-stained cloths (manufactured by Kao Corporation) and a total of 30g of cotton knit cloth, along with 600mL of each cleaning solution, were placed in a Turgotometer (manufactured by Ueshima Seisakusho Co., Ltd.) and washed at 85rpm, 20°C, for 10 minutes. Afterward, the items were spun dry for 1 minute in the spin-drying tub of a Hitachi PS-H35L twin-tub washing machine, and then dried under pressure at 200°C for 30 seconds in an ITSUMI SPCE-5E press dryer. The surface reflectance of mud-stained cloths before and after washing was measured using a Spectro Color Meter SE2000 (manufactured by Nippon Denshoku Kogyo Co., Ltd.), and the mud-washing power was calculated using the following formula. Mud cleaning power (%) = (Rw - Rs) / (R0 - Rs) × 100 *Rw, Rs, and R0 represent the reflectance after washing, before washing, and the original fabric, respectively.

[0121] Table 1 shows the composition of fatty acid 1 and fatty acid 2 of component (g).

[0122] [Table 1]

[0123] [Table 2]

[0124] The following was found from Table 2: The cleaning methods described in Examples 1 to 7 were all found to be highly effective at removing mud. Comparing Example 1 with Example 2, and Example 3 with Example 4, it was found that using fatty acid 1 as component (g) resulted in higher mud-cleaning power. This is likely due to fatty acid 1 having a higher content of 12-carbon fatty acids than fatty acid 2. Comparing Example 2 and Example 4, it was found that Example 4 exhibited higher mud-cleaning power. From this, it can be expected that using component (c), which has a lower average number of added moles of alkylene oxide, will result in higher mud-cleaning power. Furthermore, the cleaning method in Example 7 showed the highest mud-cleaning power. From this, it was found that a higher mud-cleaning power can be expected when the cleaning solution contains component (d). Furthermore, a comparison between Example 5 and Example 6 revealed that a higher content of component (g) leads to a higher expected mud-cleaning power. On the other hand, comparing Example 4 with Comparative Example 1, it was found that using component (b) instead of component (b') improved the mud-cleaning power. R in general formula (1) 1 and R 2 It was found that the mud-cleaning power is greatly affected by whether or not the alkyl group has 8 carbon atoms.

Claims

1. A method for cleaning textile products, wherein particulate dirt adhering to the textile product is cleaned with a cleaning solution, the cleaning solution containing the following components: (b) 3 mg / kg or more and 50 mg / kg or less, (c) and an arbitrary (d) in a total amount of 50 mg / kg or more and 1000 mg / kg or less, (e) component, (g) component, and water, and the mass ratio of the content of component (d) to the content of component (c) in the cleaning solution ((d) component / (c) component) is 0 or more and 0.5 or less. (b) Component: Compound represented by the following general formula (1) 【Chemistry 1】 [In the formula, R １ and R ２ Each of these is an alkyl group having 8 carbon atoms, and R ３ and R ４ Each of these is independently selected from the group consisting of alkyl groups having 1 to 3 carbon atoms and hydroxyalkyl groups having 1 to 3 carbon atoms, X － It is a monovalent anion. (c) Component: Nonionic surfactant having an aliphatic hydrocarbon group with 10 to 18 carbon atoms and a polyoxyalkylene group. (d) Component: Anionic surfactant having a group selected from a sulfonic acid group and a sulfate ester group or a salt thereof. (e) Component: Alkanolamine with 2 to 6 carbon atoms (g) Components: Fatty acids with 12 carbon atoms or salts thereof, including fatty acids with 12 to 18 carbon atoms or salts thereof.

2. The method for washing textile products according to claim 1, wherein the weighted average number of alkylene oxide addition moles of all (c) components contained in the washing solution is 2 moles or more and 20 moles or less.

3. A liquid detergent composition for textile products for cleaning particulate dirt, comprising the following components (b), (c), any (d), (e), (g), and water. (b) Component: Compound represented by the following general formula (1) 【Chemistry 2】 [wherein, R １ and R ２ are each independently an alkyl group having 8 carbon atoms, R ３ and R ４ are each independently a group selected from the group consisting of an alkyl group having 1 to 3 carbon atoms and a hydroxyalkyl group having 1 to 3 carbon atoms, and X － is a monovalent anion.] (c) Component: Nonionic surfactant having an aliphatic hydrocarbon group with 10 to 18 carbon atoms and a polyoxyalkylene group. (d) Component: Anionic surfactant having a group selected from a sulfonic acid group and a sulfate ester group or a salt thereof. (e) Component: Alkanolamine with 2 to 6 carbon atoms (g) Components: Fatty acids with 12 carbon atoms or salts thereof, including fatty acids with 12 to 18 carbon atoms or salts thereof.

4. The composition according to claim 3, wherein the weighted average number of moles of alkylene oxide added to all (c) components is 2 moles or more and 20 moles or less.

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