Textile cleaning agent composition

Abstract

To provide: a friction reduction agent for fiber capable of further reducing frictional force between fibers in a wet state, for facilitating take-out of a fiber product from a washer after washing; a cleaning agent composition for fiber capable of achieving both of excellent washing property and excellent finishing property (flexibility and wrinkle reduction property) even in an environment of actual use; and a processing method of a fiber product.SOLUTION: There is provided a friction reduction agent including following components (a) and (b). There is also provided a cleaning agent composition for fiber including, following components (a) and (b), in which a ratio of a content of the component (b) to a total content of the components (a) and (b) is 20 mass% or greater and less than 100 mass%. The component (a) is internal olefin sulfonate having 17 to 24 carbon atoms, and the component (b) is sulfosuccinic acid ester having a hydrocarbon group having 5 to 18 carbon atoms, or a salt thereof.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a friction-reducing agent for textiles, a cleaning agent composition for textiles, and a method for treating textile products. [Background technology]

[0002] Conventionally, anionic surfactants such as alkylbenzene sulfonates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, internal olefin sulfonates, and sulfosuccinates have been used as cleaning agents for household and industrial use.

[0003] Patent Document 1 discloses an internal olefin sulfonate composition that contains a C16 internal olefin sulfonate and a C18 internal olefin sulfonate in specific ratios, with the hydroxyl form / olefin form in a specific ratio, and exhibits excellent foaming properties. Patent Document 2 discloses a surfactant composition containing internal olefin sulfonic acid and / or its salt, an anionic surfactant other than internal olefin sulfonic acid and / or its salt, a nonionic surfactant, and water under predetermined conditions. Patent Document 3 discloses a surfactant composition useful as a liquid laundry detergent, which contains a predetermined nonionic surfactant and anionic surfactants such as alkyl sulfo fatty acid salts and dialkyl sulfosuccinates in predetermined proportions.

[0004] Furthermore, in recent years, due to the diversification of consumer values, there has been a demand for detergents that provide superior finishing in various aspects, such as better stain removal and softer textile products. Various efforts are being made to develop detergents that meet such demands (Patent Documents 4 and 5). [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2015-28123 [Patent Document 2] International Publication No. 2018 / 030328 [Patent Document 3] International Publication No. 1998 / 024865 [Patent Document 4] Japanese Patent Publication No. 2005-154505 [Patent Document 5] Japanese Patent Publication No. 2020-63435 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] When washing textile products in a washing machine, a problem arises: the wet fibers can become entangled during the washing process, making it difficult to remove the products after washing. This is thought to be due to friction between the wet fibers during washing. When the friction between fibers becomes strong, the textile products tend to wrinkle more easily after drying, and their flexibility also tends to decrease.

[0007] The present invention provides a friction-reducing agent for textiles that further reduces the frictional force between fibers in a wet state, making it easier to remove textile products from the washing machine after washing; a textile detergent composition that achieves both cleanability and finish (flexibility and wrinkle reduction) even under actual usage conditions; and a method for treating textile products. [Means for solving the problem]

[0008] The present invention relates to a friction reducing agent for textiles, comprising the following components (a) and (b), wherein the ratio of the content of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Components: Sulfosuccinate esters or salts thereof having hydrocarbon groups with 5 to 18 carbon atoms.

[0009] Furthermore, the present invention relates to a method for reducing interfiber friction, wherein the above-mentioned components (a) and (b) are brought into contact with the fibers in an amount such that the ratio of the amount of component (b) to the total amount of component (a) is 20% by mass or more and less than 100% by mass.

[0010] Furthermore, the present invention relates to a textile cleaning agent composition containing the above-mentioned components (a) and (b), wherein the ratio of the content of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass.

[0011] Furthermore, the present invention relates to a method for processing textile products, comprising washing the textile products with a cleaning solution obtained by mixing the above-mentioned components (a) and (b) and water, and then rinsing the textile products with water, wherein the ratio of the content of component (b) in the cleaning solution to the total content of components (a) and (b) in the cleaning solution is 20% by mass or more and less than 100% by mass. [Effects of the Invention]

[0012] The present invention provides a friction-reducing agent for textiles that further reduces the frictional force between fibers in a wet state, making it easier to remove textile products from a washing machine after washing, as well as a method for reducing inter-fiber friction, and a textile detergent composition and a method for treating textile products that achieve both cleanability and finish (flexibility and wrinkle reduction) even under actual usage conditions. [Modes for carrying out the invention]

[0013] The present invention has found that by using components (a) and (b) in predetermined proportions, a friction-reducing agent for textiles and a method for reducing inter-fiber friction can be obtained that further reduces the frictional force between fibers in a wet state, making it easier to remove textile products from the washing machine after washing (for example, after spin-drying). Furthermore, the present invention has found that by using components (a) and (b) in predetermined proportions, a detergent composition for textiles and a method for treating textile products can be obtained that achieves both cleanability and finish (flexibility, wrinkle reduction) even under the conditions of actual use. Although the mechanism is not clear, it is presumed that the friction-reducing agent for textiles and the detergent composition for textiles of the present invention reduce the frictional force between fibers in a wet state during washing while maintaining good cleanability by forming a hydrated solid of component (b) on the fiber surface. The hydrated solid also contains component (a), and it is believed that the synergistic effect of the combination of component (a), which is a specific anionic surfactant, and component (b), which is a specific anionic surfactant different from component (a), improves the formation of the hydrated solid, contributing to the reduction of friction between fibers in a wet state. As a result, entanglement of textile products is suppressed, making it easier to remove textile products from the washing machine after washing (for example, after spinning). This provides a friction-reducing agent and method for reducing inter-fiber friction for textiles, as well as a detergent composition and method for treating textile products that achieve both cleanability and finish (flexibility, wrinkle reduction) in the environment of actual use.

[0014] <Friction-reducing agent for textiles and method for reducing interfiber friction> The friction-reducing agent for textiles of the present invention contains (a) an internal olefin sulfonate having 17 to 24 carbon atoms, and (b) a sulfosuccinate ester or salt thereof having a hydrocarbon group having 5 to 18 carbon atoms, wherein the ratio of the content of component (b) to the total content of component (a) and component (b) is 20% by mass or more and less than 100% by mass. The present invention provides a friction-reducing agent for textiles that imparts a friction-reducing effect to textiles, and contains components (a) and (b) as its active ingredients.

[0015] Component (a) of the present invention is an internal olefin sulfonate having 17 to 24 carbon atoms. In component (a), the number of carbon atoms in the internal olefin sulfonate represents the number of carbon atoms in the internal olefin to which the sulfonate is covalently bonded. In component (a), the number of carbon atoms in the internal olefin sulfonate is preferably 18 or more, preferably 22 or less, and more preferably 20 or less, from the viewpoint of reducing friction between fibers in a wet state, washability, flexibility, and wrinkle reduction.

[0016] (a) The internal olefin sulfonate of component (a) is a sulfonate obtained by sulfonating, neutralizing, and hydrolyzing an internal olefin (an olefin having a double bond inside the olefin chain) with 17 to 24 carbon atoms as a raw material. Some of these internal olefins contain trace amounts of so-called alpha-olefins (hereinafter also called α-olefins), in which the double bond is located at position 1 of the carbon chain. Furthermore, when an internal olefin is sulfonated, β-sartone is quantitatively produced, and some of the β-sartone is converted into γ-sartone and olefin sulfonic acid, which are further converted into hydroxyalkane sulfonates and olefin sulfonates in the neutralization and hydrolysis process (for example, J. Am. Oil Chem. Soc. 69, 39 (1992)). Here, the hydroxyl group of the obtained hydroxyalkane sulfonate is inside the alkane chain, and the double bond of the olefin sulfonate is inside the olefin chain. Furthermore, the resulting product is mainly a mixture of these compounds, and may also contain trace amounts of hydroxyalkanesulfonates having a hydroxyl group at the end of the carbon chain, or olefin sulfonates having a double bond at the end of the carbon chain. In this specification, each of these products and mixtures thereof are collectively referred to as internal olefin sulfonates (component (a)). Furthermore, hydroxyalkane sulfonates are referred to as the hydroxy derivative of internal olefin sulfonates (hereinafter also referred to as the HAS derivative), and olefin sulfonates are referred to as the olefin derivative of internal olefin sulfonates (hereinafter also referred to as the IOS derivative). The mass ratio of the HAS and IOS forms of the compound in component (a) can be measured by high-performance liquid chromatography-mass spectrometry (hereinafter abbreviated as HPLC-MS). Specifically, the mass ratio can be determined from the HPLC-MS peak area of ​​component (a).

[0017] Examples of salts of internal olefin sulfonates 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 having 2 to 6 carbon atoms, which include alkanolamines as described later. Organic ammonium salts also include salts of amines. From the viewpoint of reducing friction between fibers in a wet state, washability, flexibility, wrinkle reduction, and versatility, alkali metal salts are preferred, and sodium salts and potassium salts are more preferred.

[0018] (a) As is clear from the above manufacturing method, the sulfonic acid groups of the internal olefin sulfonate are located within the carbon chain of the internal olefin sulfonate, i.e., within the olefin chain or alkane chain, and in some cases, trace amounts of sulfonic acid groups may be present at the ends of the carbon chain.

[0019] (a) The content of internal olefin sulfonates in the component in which the sulfonic acid group is located at position 5 or higher, preferably at position 5 to 9, is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, even more preferably 20% by mass or more, and preferably 60% by mass or less, more preferably 55% by mass or less, even more preferably 45% by mass or less, and even more preferably 40% by mass or less.

[0020] (a) The mass ratio of (IO-1S) / (IO-2S) in the component, which is the content of internal olefin sulfonates [hereinafter sometimes referred to as (IO-1S)] having sulfonic acid groups located at positions 2 to 4, and internal olefin sulfonates [hereinafter sometimes referred to as (IO-2S)] having sulfonic acid groups located at position 5 or higher, preferably at positions 5 to 9, is preferably 0.5 or higher, more preferably 0.8 or higher, even more preferably 1.0 or higher, even more preferably 1.5 or higher, even more preferably 2 or higher, even more preferably 2.5 or higher, even more preferably 3 or higher, even more preferably 4 or higher, and even more preferably 4.5 or higher, and even more preferably 10 or lower, more preferably 8 or lower, and even more preferably 6 or lower, from the viewpoint of reducing friction between fibers in a wet state, washability, flexibility, wrinkle reduction, and ease of manufacture. Furthermore, the content of each compound with different sulfonic acid group positions in component (a) can be measured by HPLC-MS. In this specification, the content of each compound with different sulfonic acid group positions shall be determined as the mass ratio based on the HPLC-MS peak area of ​​the compounds with sulfonic acid groups at each position in the total HAS mixture of component (a).

[0021] (a) The content of olefin sulfonates in component (a) in which the sulfonic acid group is located at position 1 is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and still more preferably 3% by mass or less, from the viewpoint of reducing friction between fibers in a wet state, washability, wrinkle reduction, and imparting good flexibility to the fibers, and preferably 0.01% by mass or more from the viewpoint of reducing production costs and improving productivity. The position of the sulfonic acid group in these compounds is within the olefin chain or the alkane chain.

[0022] The aforementioned internal olefin sulfonate may be a mixture of the hydroxy and olefin forms. (a) The mass ratio (olefin / hydroxy) of the content of the olefin form of the internal olefin sulfonate to the content of the hydroxy form of the internal olefin sulfonate in component (olefin / hydroxy) may be 0 / 100 or more, more specifically 5 / 95 or more, and then 50 / 50 or less, more specifically 40 / 60 or less, more specifically 30 / 70 or less, and more specifically 25 / 75 or less.

[0023] The mass ratio of the content of the hydroxy form of the internal olefin sulfonate to the content of the olefin form of the internal olefin sulfonate in component (a) can be measured from component (a) by HPLC-MS using the method described in the examples.

[0024] (a) The component can be produced, for example, by sulfonating, neutralizing, and hydrolyzing an internal olefin with 18 carbon atoms as a raw material. The sulfonation reaction can be carried out by reacting 1.0 to 1.2 moles of sulfur trioxide gas with 1 mole of internal olefin. The reaction temperature can be 20 to 40°C. Neutralization is carried out by reacting the product with an alkaline aqueous solution such as potassium hydroxide, ammonia, or 2-aminoethanol in an amount 1.0 to 1.5 times the theoretical value of the sulfonic acid groups. The hydrolysis reaction can be carried out in the presence of water at 90 to 200°C for 30 minutes to 3 hours. These reactions can be carried out continuously. After the reaction is complete, the product can be purified by extraction, washing, etc.

[0025] In the present invention, an internal olefin refers to an olefin having a double bond inside the olefin chain, as described above.

[0026] (b) The component is a sulfosuccinate ester or salt thereof having a hydrocarbon group with 5 to 18 carbon atoms. (b) component is preferably a sulfosuccinic acid diester or its salt having two hydrocarbon groups with 5 to 18 carbon atoms (hereinafter referred to as (b1) component) from the viewpoints of detergency, reduction of inter-fiber friction during wetting, improvement of flexibility, and reduction of wrinkles. (b) component is preferably a sulfosuccinic acid diester or its salt having two hydrocarbon groups with 5 to 18 carbon atoms having a branched chain and the total number of carbon atoms of the two hydrocarbon groups being 20 or more. The total number of carbon atoms of the two hydrocarbon groups of this sulfosuccinic acid diester or its salt is preferably 30 or less, more preferably 24 or less.

[0027] Examples of the (b1) component include compounds represented by the following general formula (b1).

[0028] [Chemical formula]

[0029] [In the formula, R 1 , R 2 [[ID=2--0]] are each a hydrocarbon group having 5 to 18 carbon atoms, A 1 O, A 2 O are each an alkyleneoxy group having 2 to 4 carbon atoms, x1 and x2 are the average number of added moles, and are each a number of 0 or more and 10 or less, and M is a cation. ]

[0030] In the general formula (b1), R 1 and R 2 may be the same or different and are each a hydrocarbon group having 5 to 18 carbon atoms. Examples of the hydrocarbon group include an alkyl group and an alkenyl group. From the viewpoints of detergency, reduction of inter-fiber friction during wetting, improvement of flexibility, and reduction of wrinkles, R 1 and R 2 are preferably alkyl groups.

[0031] In the general formula (b1), R 1 and R 2The number of carbon atoms in the hydrocarbon group is 5 or more, preferably 6 or more, more preferably 8 or more, even more preferably 10 or more, and from the viewpoint of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction, and from the same viewpoint, 18 or less, preferably 15 or less, and more preferably 12 or less.

[0032] In general formula (b1), R 1 and R 2 The total number of carbon atoms is preferably 12 or more, more preferably 16 or more, even more preferably 20 or more, and preferably 30 or less, and more preferably 24 or less, from the viewpoint of washability, reduction of interfiber friction when wet, improved flexibility, and reduction of wrinkles. Here, as component (b1), R 1 and R 2 If it contains two or more compounds with different total carbon numbers, (b1) R as the whole 1 and R 2 The total number of carbon atoms in each compound is R 1 and R 2 This represents the molar average of the total number of carbon atoms.

[0033] In general formula (b1), R 1 and R 2 The hydrocarbon groups may be either linear or branched, but branched chains are preferable from the viewpoint of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction. 1 and R 2 When the hydrocarbon group is a branched chain, it is preferable to have side chains with 2 or more carbon atoms, and more preferably to have side chains with 3 or more carbon atoms, from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles. The number of carbon atoms in the side chain may be 10 or less, more preferably 8 or less, and more preferably 6 or less. 1 and R 2 In the hydrocarbon group, the carbon atom bonded to the oxygen atom (O) in the formula is called the first carbon, and the longest sequence of carbon atoms is called the main chain. The number of carbon atoms in the main chain is X(R 1 and R 2 When X is 3 or greater (because the carbon number of the main chain is 5 or more), the hydrocarbon groups bonded to any of the carbon atoms from the 1st to the (X-1)th position of the main chain are called side chains. In general formula (b1), R 1 and R 2 The hydrocarbon group may be either saturated or unsaturated. Therefore, in the general formula (b1), R 1 and R 2 Preferably, at least one of them is a branched chain. In general formula (b1), R 1 and R 2 From the viewpoint of washability, reduction of inter-fiber friction when wet, improvement of flexibility, and reduction of wrinkles, it is more preferable that the hydrocarbon groups include saturated branched-chain hydrocarbon groups. Also, R 1 and R 2 If the hydrocarbon group is a branched-chain hydrocarbon group, it may be a group derived from Guerbet alcohols, from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, reduction of wrinkles, and availability.

[0034] R in general formula (b1) 1 and R 2 From the viewpoints of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, each of these is independently preferably a branched alkyl group having 8 to 12 carbon atoms, more preferably a branched alkyl group having 8 to 10 carbon atoms, and even more preferably a branched alkyl group having 10 carbon atoms.

[0035] In this invention, hydrocarbon residues obtained by removing a hydroxyl group from a secondary alcohol are included in branched hydrocarbon groups such as branched alkyl groups. R 1 and R 2 However, if each is a branched alkyl group having 8 to 12 carbon atoms, the total number of carbon atoms constituting the side chain may be the same or different, and from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, it is preferably 1 or more, more preferably 2 or more, preferably 4 or less, more preferably 3 or less, and even more preferably 3. In this invention, the total number of carbon atoms constituting the side chains refers to the sum of the carbon atoms in all side chains other than the main chain in a single branched alkyl group, and if there are multiple side chains, it refers to the sum of the carbon atoms in all of those side chains. R1 and R 2 The number of side chains may be the same or different, and from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, it is 1 or more, preferably 3 or less, and more preferably 2 or less. 1 and R 2 The number of side chains is preferably 1, from the viewpoint of washability, reduction of inter-fiber friction when wet, improvement of flexibility, and reduction of wrinkles. In the present invention, the number of side chains refers to the number of side chains branching from the main chain, and the number of side chains does not change even if a side chain has further side chains branching from it. However, although a side chain may have further side chains branching from it, it is preferable that the side chains are straight chains from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles. R 1 and R 2 However, if each is independently a branched alkyl group having 8 to 12 carbon atoms, then R 1 , R 2 The number of branched carbons may be the same or different, and from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, it is 1 or more, preferably 3 or less, and more preferably 2 or less. 1 and R 2 The number of branched carbon atoms is preferably 1, from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles. In the present invention, the number of branched carbon atoms is the sum of the number of tertiary and quaternary carbon atoms in the branched alkyl group. R 1 , R 2 A more preferred embodiment is a branched alkyl group having 8 to 12 carbon atoms, from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, wherein the number of carbon atoms in the main chain is independently 6, 7, or 8, the number of carbon atoms constituting the side chains is independently preferably 1 to 4, more preferably 2 to 4, even more preferably 2 to 3, and even more preferably 3, and the number of side chains is independently preferably 3 or less, more preferably 2 or less, and even more preferably 1. R 1 , R2 From the viewpoints of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction, branched alkyl groups selected from branched octyl groups, branched decyl groups, and branched dodecyl groups are preferred, with branched decyl groups being more preferred from the viewpoints of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction. Examples of branched octyl groups include 2-ethylhexyl groups. Examples of branched decyl groups include 2-propylheptyl groups and groups derived from decyl alcohol manufactured by KH Neochem Co., Ltd., with 2-propylheptyl groups being preferred. Examples of branched dodecyl groups include 2-butyloctyl groups.

[0036] In general formula (b1), R 1 The hydrocarbon group and R 2 The hydrocarbon groups may be the same or different. 1 The hydrocarbon group and R 2 When the hydrocarbon groups are different, it is preferable from the viewpoint of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction. Also, R 1 The hydrocarbon group and R 2 When the hydrocarbon groups are the same, it is preferable in terms of washability, reduction of interfiber friction when wet, improved flexibility, wrinkle reduction, and quality stability. For example, in general formula (b1), R 1 The number of carbon atoms and R 2 The number of carbon atoms may be the same or different. 1 The number of carbon atoms and R 2 When the number of carbon atoms differs, it is preferable from the viewpoint of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction. Also, R 1 The number of carbon atoms and R 2 When the number of carbon atoms is the same, it is preferable from the viewpoint of washability, reduction of inter-fiber friction when wet, improved flexibility, wrinkle reduction, and quality stability.

[0037] In general formula (b1), R 1 and R 2When the hydrocarbon group contains a branched chain, the degree of branching, as defined by the following formula, is preferably 0.3 or less, more preferably 0.2 or less, even more preferably 0.1 or less, and even more preferably 0.08 or less, from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, and is preferably 0.01 or more, more preferably 0.02 or more, and even more preferably 0.04 or more. Branching degree = [(R 1 and R 2 (Total number of terminal methyl groups) - 2] / (R 1 and R 2 (Total number of carbon atoms) The degree of branching is, 1 This is an average value that can be measured using 1H-NMR.

[0038] In general formula (b1), A 1 O, A 2 Each O is an alkylene oxy group having 2 or 3 carbon atoms, preferably with 2 or 4 carbon atoms, from the viewpoint of washability, reduction of interfiber friction when wet, improved flexibility, and wrinkle reduction. In general formula (b1), x1 and x2 are A 1 O, A 2 This represents the average number of moles of O added, and from the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, the number is preferably 6 or less, more preferably 4 or less, and even more preferably 2 or less, with 0 being the most preferable.

[0039] In general formula (b1), M is a cation. M is preferably a cation other than a hydrogen ion. Examples of M include alkali metal ions such as lithium ions, sodium ions, and potassium ions; alkaline earth metal ions such as magnesium ions, calcium ions, and barium ions; and organic ammonium ions such as triethanolammonium ions, diethanolammonium ions, monoethanolammonium ions, trimethylammonium ions, and monomethylammonium ions. From the viewpoint of washability, reduction of interfiber friction when wet, improvement of flexibility, and reduction of wrinkles, alkali metal ions and alkanolammonium ions are preferred for M, sodium ions, potassium ions, triethanolammonium ions, diethanolammonium ions, and monoethanolammonium ions are more preferred, and sodium ions are even more preferred.

[0040] The friction-reducing agent for fibers of the present invention contains component (a) in an amount preferably 1% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 20% by mass or more, preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of reducing interfiber friction when wet. The content of component (a) in the present invention is based on the amount converted to potassium salt.

[0041] The friction-reducing agent for fibers of the present invention contains component (b) in an amount preferably 1% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of reducing interfiber friction when wet. The content of component (b) in the present invention is based on the amount converted to sodium salt.

[0042] The friction-reducing agent for fibers of the present invention, from the viewpoint of reducing interfiber friction when wet, has a ratio of the content of component (b) to the total content of component (a) and component (b) of 20% by mass or more, preferably 25% by mass or more, more preferably 50% by mass or more, and less than 100% by mass, preferably 80% by mass or less, more preferably 75% by mass or less. In the present invention, when a ratio is expressed in mass%, it means that the value of a predetermined ratio is expressed as a percentage (the same applies hereinafter).

[0043] The textile friction reducing agent of the present invention may contain, as an optional component other than component (a) and component (b), for example, a pH adjuster, fragrance, antibacterial agent, bleaching agent, bleaching activator, defoaming agent, fragrance capsule, enzyme, polymer, silicone, etc. The textile friction reducing agent of the present invention may be a composition containing component (a) and component (b).

[0044] Furthermore, from the viewpoint of reducing interfiber friction when wet, the textile friction reducing agent of the present invention preferably contains a surfactant of component (x) and a solvent of component (c), as described later. Specific examples and preferred examples of components (x) and (c) are the same as those for the textile cleaning agent composition of the present invention. If the friction reducing agent for fibers of the present invention contains component (x), the reducing agent preferably contains component (x) in an amount of 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, and preferably 50% by mass or less, more preferably 40% by mass or less, even more preferably 30% by mass or less, and even more preferably 20% by mass or less. Furthermore, if the friction reducing agent for fibers of the present invention contains component (c), the reducing agent preferably contains component (c) in an amount of 0.1% by mass or more, more preferably 1% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 15% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, and even more preferably 25% by mass or less, from the viewpoint of reducing interfiber friction when wet.

[0045] The friction-reducing agent for textiles of the present invention can be applied to textiles as a treatment solution containing, for example, component (a), component (b), and water. This treatment solution may further contain component (x) and component (c).

[0046] The present invention discloses the use of an agent containing component (a) and component (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass, as a friction reducing agent for textiles. The matters described in the present invention regarding the friction reducing agent for textiles, the method for reducing interfiber friction, the cleaning agent composition for textiles, and the method for treating textile products can be appropriately applied to the use of the present invention. Specific examples and preferred embodiments of component (a) and component (b) in the use of the present invention are the same as those for the friction reducing agent for textiles of the present invention.

[0047] The present invention provides a method for reducing interfiber friction, in which components (a) and (b) are brought into contact with the fibers in an amount such that the ratio of the amount of component (b) to the total amount of component (a) is 20% by mass or more and less than 100% by mass. The matters described in the present invention regarding the friction-reducing agent for textiles, the cleaning agent composition for textiles, and the treatment method for textile products can be appropriately applied to the method for reducing interfiber friction of the present invention. Specific examples and preferred embodiments of components (a) and (b) in the method for reducing interfiber friction of the present invention are the same as those for the friction-reducing agent for textiles of the present invention. The method for reducing interfiber friction of the present invention can be carried out using the friction-reducing agent for textiles of the present invention.

[0048] In the method for reducing interfiber friction of the present invention, for example, a treatment solution containing component (a), component (b), and water can be brought into contact with the fibers. This treatment solution may further contain component (x) and component (c). Alternatively, this treatment solution may be obtained by mixing the friction-reducing agent for fibers of the present invention with water.

[0049] The fibers targeted by the method for reducing inter-fiber friction of the present invention may be textile products such as clothing.

[0050] In the method for reducing interfiber friction of the present invention, for example, component (a) can be brought into contact with the fibers at a level of 0.001%owf or higher, then 0.01%owf or higher, then 10%owf or lower, and then 1%owf or lower. Here, "%owf" is an abbreviation for "% on the weight of fabric," and means the percentage of the mass of a certain component (such as component (a)) relative to the mass of the fiber. Furthermore, in the method for reducing interfiber friction of the present invention, for example, component (b) can be brought into contact with the fibers at a concentration of 0.0001% owf or more, then 0.001% owf or more, then 10% owf or less, and then 1% owf or less. The friction reducing agent for textiles of the present invention may be used such that component (a) and / or component (b) have a %owf within the range described above.

[0051] <Detergent composition for textiles> The textile cleaning agent composition of the present invention contains the above-mentioned components (a) and (b), wherein the ratio of the content of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. The matters described in the present invention regarding the friction-reducing agent for textiles, the method for reducing inter-fiber friction, and the treatment method for textile products can be appropriately applied to the textile cleaning agent composition of the present invention. Specific examples and preferred embodiments of component (a) and component (b) in the textile cleaning agent composition of the present invention are the same as those described in the present invention regarding the friction-reducing agent for textiles, the method for reducing inter-fiber friction, and the treatment method for textile products. The textile cleaning agent composition of the present invention may contain component (a) and component (b) as a friction reducing agent for textiles.

[0052] The textile detergent composition of the present invention contains component (a) in an amount of preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 15% by mass or more, and preferably 90% by mass or less, more preferably 80% by mass or less, even more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of improving cleanability, improving flexibility, and reducing wrinkles.

[0053] The textile detergent composition of the present invention contains component (b) in an amount of preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, and preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of improving cleanability, improving flexibility, and reducing wrinkles.

[0054] The present invention provides a textile detergent composition in which, from the viewpoint of improving cleanability, improving flexibility, and reducing wrinkles, the ratio of the content of component (b) to the total content of component (a) is 20% by mass or more, preferably 25% by mass or more, more preferably 50% by mass or more, and less than 100% by mass, preferably 80% by mass or less, and more preferably 75% by mass or less.

[0055] The textile friction reducing agent and / or textile cleaning agent composition of the present invention may contain a surfactant other than component (a) and component (b) [hereinafter referred to as component (x)]. Component (x) may include one or more surfactants selected from anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants other than components (a) and (b).

[0056] From the viewpoints of formulation, improved detergency, improved flexibility, and reduced wrinkles, as an anionic surfactant other than the component (a) and the component (b), one or more compounds selected from the compound (x1-1) represented by the following general formula (x1-1) [hereinafter referred to as the (x1-1) component], the compound (x1-2) represented by the general formula (x1-2) [hereinafter referred to as the (x1-2) component], and the compound (x1-3) represented by the general formula (x1-3) [hereinafter referred to as the (x1-3) component] are preferred. R 1x -O-[(PO) m1 (EO) n1 -SO3M 1x (x1-1) (In the formula (x1-1), R 1x represents an alkyl group having 8 to 22 carbon atoms, the carbon atom bonded to the oxygen atom is the first carbon atom, PO represents a propyleneoxy group, EO represents an ethyleneoxy group, EO and PO are in a block type bond or a random type bond, and the bonding order of PO and EO is not limited. m1 and n1 are the average number of added moles, m1 is 0 or more and 5 or less, and n1 is 0 or more and 16 or less, and M 1x represents a hydrogen atom, an alkali metal, an alkaline earth metal (1 / 2 atom), ammonium, or an organic ammonium.) R 2x -B-SO3M 2x (x1-2) (In the formula (x1-2), R 2x represents an alkyl group having 9 to 21 carbon atoms, B represents a benzene ring, the carbon atom of B bonded to R 2x is a secondary carbon atom, M 2x represents a hydrogen atom, an alkali metal, an alkaline earth metal (1 / 2 atom), ammonium, or an organic ammonium. The sulfonic acid group is bonded to the ortho position, meta position, or para position with respect to R 2x bonded to B.) R 3x -CH(SO3M 3x )COOR 4x (x1-3) (In the formula (x1-3), R 3x represents an alkyl group having 6 to 20 carbon atoms, R 4xrepresents an alkyl group having 1 to 6 carbon atoms, and M 3x represents a hydrogen atom, an alkali metal, an alkaline earth metal (1 / 2 atom), ammonium or an organic ammonium.

[0057] From the viewpoints of formulation or improvement in detergency, improvement in flexibility, and reduction in wrinkles, in general formula (x1-1), R 1x is preferably an alkyl group having 9 or more carbon atoms, more preferably 10 or more carbon atoms, still more preferably 12 or more carbon atoms, and preferably 18 or less carbon atoms, more preferably 16 or less carbon atoms, still more preferably 14 or less carbon atoms. R 1 is preferably a linear alkyl group. From the viewpoints of formulation or improvement in detergency, improvement in flexibility, and reduction in wrinkles, in general formula (x1-1), m1 is preferably 4 or less, more preferably 3 or less, still more preferably 2 or less. From the viewpoints of formulation or improvement in detergency, improvement in flexibility, and reduction in wrinkles, in general formula (x1-1), n1 is preferably 0.5 or more, more preferably 1 or more, still more preferably 2 or more, and preferably 10 or less, more preferably 5 or less, still more preferably 4 or less. From the viewpoints of formulation or improvement in detergency, improvement in flexibility, and reduction in wrinkles), in general formula (x1-1), M 1x is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (1 / 2 atom) such as magnesium or calcium, or an organic ammonium. The organic ammonium salt may be a salt with an amine used as a pH adjuster. M 1x is more preferably an alkali metal such as sodium or potassium, an alkanolammonium such as monoethanolammonium or diethanolammonium, and still more preferably sodium.

[0058] From the viewpoint of formulation or improved washability, improved flexibility, and wrinkle reduction, the (x1-1) component is preferably a polyoxyalkylene alkyl ether sulfate sodium salt in which the alkyl group has 12 to 14 carbon atoms, the average number of added propioxy groups is 0 to 4, and the average number of added ethyleneoxy groups is 1 to 4. That is, in the general formula (x1-1), component (x1-1) is R 1x is an alkyl group with 12 to 14 carbon atoms, m1 is 0 to 4, n1 is 1 to 4, M 1x Compounds in which sodium is present are preferred.

[0059] From the perspective of formulation, improved washability, improved flexibility, and wrinkle reduction, in the general formula (x1-2), R 2x This is an alkyl group having 9 or more carbon atoms, preferably 10 or more, more preferably 11 or more, and preferably 18 or fewer, more preferably 16 or fewer, and even more preferably 14 or fewer. In general formula (x1-2), M 2x The is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (half an atom) such as magnesium or calcium, or an organic ammonium. The organic ammonium salt may be a salt of an amine used as a pH adjuster. 2x The more preferably is an alkali metal such as sodium or potassium, or an alkanol ammonium such as monoethanolammonium or diethanolammonium, and even more preferably sodium.

[0060] From the perspective of formulation, improved washability, improved flexibility, and wrinkle reduction, in the general formula (x1-3), R 3x This preferably represents an alkyl group having 8 or more carbon atoms, more preferably 10 or more, and more preferably 18 or fewer carbon atoms, and more preferably 16 or fewer carbon atoms. From the perspective of formulation, improved washability, improved flexibility, and wrinkle reduction, in the general formula (x1-3), R 4x The alkyl group preferably has 1 or more carbon atoms, preferably 5 or fewer, and more preferably 4 or fewer. From the perspective of formulation or improving washability, improving flexibility, and reducing wrinkles, in the general formula (x1-3), M 3x This is preferably a hydrogen atom, an alkali metal such as sodium or potassium, an alkaline earth metal (half an atom) such as magnesium or calcium, or an organic ammonium salt. The organic ammonium salt may be a salt of an amine used as a pH adjuster. 3x The more preferably is an alkali metal such as sodium or potassium, or an alkanol ammonium such as monoethanolammonium or diethanolammonium, and even more preferably sodium.

[0061] Examples of nonionic surfactants include those represented by the following general formula (x2), from the viewpoint of formulation, improved cleaning performance, improved flexibility, and wrinkle reduction. R 5x (CO) m2 O-(AO) n2 -R 6x (x2) [In the formula, R 5x R is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, 6x is a hydrogen atom or a methyl group, CO is a carbonyl group, m2 is a number of 0 or 1, AO is one or more groups selected from ethyleneoxy and propyleneoxy groups, and n2 is the average number of moles added, which is between 1 and 70.

[0062] In general formula (x2), R 5x R is an aliphatic hydrocarbon group having 9 to 18 carbon atoms. From the viewpoint of formulation or improving washability, improving flexibility, and reducing wrinkles, 5x The number of carbon atoms is 9 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 16 or less, more preferably 14 or less. R 5x The aliphatic hydrocarbon group is preferably a group selected from alkyl groups and alkenyl groups. From the viewpoint of improving formulation or washability, improving flexibility, and reducing wrinkles, it is preferable that m2 in the general formula (x2) be 0. From the perspective of formulation, improved washability, improved flexibility, and wrinkle reduction, in the general formula (x2), R 6x A hydrogen atom is preferred.

[0063] In general formula (x2), the AO group is one or more groups selected from ethyleneoxy groups and propyleneoxy groups. When ethyleneoxy and propyleneoxy groups are included, the ethyleneoxy and propyleneoxy groups may be bonded in a block or random manner. From the viewpoint of not inhibiting the fiber softening effect of components (a) and (b), the AO group is preferably a group containing an ethyleneoxy group. Furthermore, the bonding order of the ethyleneoxy and propyleneoxy groups is not relevant.

[0064] In the general formula (x2), n2 is the average number of moles added, and is a number between 1 and 70. From the viewpoint of formulation or improving washability, improving flexibility, reducing wrinkles, and stably blending components (a) and (b), n2 is preferably 1 or more, more preferably 5 or more, more preferably 10 or more, and preferably 70 or less, preferably 60 or less, more preferably 50 or less, even more preferably 40 or less, even more preferably 30 or less, and even more preferably 25 or less.

[0065] From the viewpoint of formulation or improved washability, improved flexibility, and wrinkle reduction, a more preferred compound as the nonionic surfactant of the present invention is one in which the average degree of polymerization (or average number of added moles) of the ethylene oxy group (hereinafter sometimes referred to as EO group) is 1 or more, preferably 5 or more, more preferably 10 or more, and 70 or less, preferably 50 or less, and even more preferably 25 or less, and the average degree of polymerization (or average number of added moles) of the propylene oxy group (hereinafter sometimes referred to as PO group) is 0 or more and 5 or less, preferably 4 or less, and the EO group and PO group are bonded in a block type or random type bond, preferably in a block type bond, and more preferably, from the viewpoint of formulation or improved washability, improved flexibility, wrinkle reduction, and stability, alkyl ether (for example, R in general formula (x2)) 5xThe polyoxyethylene (polyoxypropylene) alkyl ether has a block-type bond in the order EOPOEO or POEO relative to -O, and the alkyl group is derived from a linear primary or secondary alcohol having 12 to 18 carbon atoms, more preferably 12 or 14 carbon atoms, and even more preferably 12 carbon atoms.

[0066] Examples of cationic surfactants include tertiary amine salts and quaternary ammonium salts.

[0067] Examples of amphoteric surfactants include betaine-based amphoteric surfactants and amine oxide-type amphoteric surfactants.

[0068] Component (x) is preferably one or more surfactants selected from anionic surfactants other than components (a) and (b), and nonionic surfactants.

[0069] When the textile detergent composition of the present invention contains component (x), from the viewpoint of improving cleanability, improving flexibility, and reducing wrinkles, the composition preferably contains component (x) in an amount of 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, even more preferably 5% by mass or more, and preferably 50% by mass or less, more preferably 25% by mass or less, and even more preferably 15% by mass or less.

[0070] The textile detergent composition of the present invention has a ratio of the total amount of component (a) and component (b) to the total amount of surfactant which is preferably 10% by mass or more, more preferably 20% by mass or more, even more preferably 30% by mass or more, even more preferably 40% by mass or more, and preferably 100% by mass or less, more preferably 90% by mass or less, even more preferably 80% by mass or less, even more preferably 70% by mass or less, even more preferably 60% by mass or less, and even more preferably 50% by mass or less, from the viewpoint of improving cleaning performance, improving flexibility, and reducing wrinkles. The total amount of surfactant may be the total content of component (a), component (b), and component (x) in the composition. The textile detergent composition of the present invention is a composition containing a surfactant which contains component (a) and component (b) as surfactants in the predetermined ratios above, and the ratio of the total content of component (a) and component (b) to the amount of surfactant may be within the above range.

[0071] From the viewpoint of improving washability, improving flexibility, and reducing wrinkles, the textile friction reducing agent and / or textile cleaning agent composition of the present invention preferably further contains the following component (c) from the viewpoint of formulation or improving washability, improving flexibility, and reducing wrinkles. (c) Components: Solvent containing hydroxyl groups

[0072] (c) The component is preferably one or more organic solvents selected from the following components (c1) to (c4). (c1) Components: Monohydric alcohol with 2 to 6 carbon atoms (c2) Components: Alcohols with 2 to 12 carbon atoms and a valency of 2 to 12. (c3) Components: Organic solvent having hydrocarbon groups with 1 to 8 carbon atoms (excluding aromatic groups that may be partially substituted), ether groups, and hydroxyl groups. (c4) Components: Organic solvent having aromatic groups, ether groups, and hydroxyl groups, which may be partially substituted.

[0073] (c1) Examples of components include ethanol, 1-propanol, 2-propanol, and phenol.

[0074] (c2) Examples of components include ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, and glycerin.

[0075] Examples of component (c3) include diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (also called butyl diglycol), dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, 1-methylglycerin ether, 2-methylglycerin ether, 1,3-dimethylglycerin ether, 1-ethylglycerin ether, 1,3-diethylglycerin ether, 1-pentylglyceryl ether, 2-pentylglyceryl ether, 1-octylglyceryl ether, and 2-ethylhexylglyceryl ether.

[0076] (c4) Examples of components include 2-phenoxyethanol (also called phenyl glycol), diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, polyethylene glycol monophenyl ether with an average molecular weight of approximately 480, 2-benzyloxyethanol, and diethylene glycol monobenzyl ether.

[0077] (c) Component (c) is preferably an organic solvent having one or more hydroxyl groups selected from components (c2), (c3), and (c4) above, from the viewpoint of improving formulation or washability, improving flexibility, and reducing wrinkles.

[0078] If the textile detergent composition of the present invention contains component (c), the composition preferably contains component (c) in an amount of 0.1% by mass or more, more preferably 1% by mass or more, even more preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, and even more preferably 25% by mass or less, from the viewpoint of formulation or improvement of cleaning performance, improvement of flexibility, and reduction of wrinkles.

[0079] The textile cleaning agent composition of the present invention may contain, as further optional components, for example, pH adjusters, fragrances, antibacterial agents, bleaching agents, bleaching activators, defoaming agents, fragrance capsules, enzymes, polymers, silicones, etc. As pH adjusters, for example, alkaline agents such as monoethanolamine or acidic agents such as citric acid can be used.

[0080] The textile detergent composition of the present invention preferably contains water. It may be a liquid composition containing water. Preferably, the water used is water that is free of impurities and moderately purified. Well water and industrial water can also be used. Tap water, purified water, or, for example, deionized water is preferred. The textile detergent composition of the present invention preferably contains 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, and preferably 95% by mass or less, preferably 90% by mass or less, and more preferably 85% by mass or less of water. The water content may be the remainder of the total content of component (a), component (b), and any optional component. The textile friction reducer of the present invention may also contain water.

[0081] The friction-reducing agent and cleaning agent composition for textiles of the present invention have a pH at 25°C, measured by the following method, preferably 4 or higher, more preferably 5 or higher, and preferably 12 or lower, and more preferably 11 or lower. [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 6.86 → pH 9.18 → pH 4.01. Adjust the sample to be measured (friction reducing agent for textiles or cleaning agent composition for textiles) to 25°C, immerse the electrode of the pH meter in the sample, and measure the pH after 1 minute.

[0082] <Processing methods for textile products> The present invention relates to a method for washing textile products, comprising washing the textile products with a washing solution obtained by mixing component (a), component (b), and water, and then rinsing the textile products with water, wherein the ratio of the content of component (b) in the washing solution to the total content of component (a) and component (b) in the washing solution is 20% by mass or more and less than 100% by mass. The matters described in the present invention concerning the friction-reducing agent for textiles, the method for reducing interfiber friction, and the cleaning agent composition for textiles can be appropriately applied to the method for treating textile products of the present invention. Specific examples and preferred embodiments of components (a) and (b) in the method for treating textile products of the present invention are the same as those for the friction-reducing agent for textiles of the present invention. The method for treating textile products of the present invention can be carried out using the friction-reducing agent for textiles or the cleaning agent composition for textiles of the present invention. The cleaning solution may also have the pH described in the cleaning agent composition for textiles of the present invention. The cleaning solution may also contain components (x) and (c). Washing and rinsing of textile products can be carried out according to known methods.

[0083] The concentration of component (a) in the cleaning solution is preferably 0.0001% by mass or more, more preferably 0.0005% by mass or more, and preferably 10% by mass or less, and more preferably 1% by mass or less, from the viewpoint of improving cleaning performance, improving flexibility, and reducing wrinkles. The cleaning solution is preferably prepared by diluting the textile cleaning agent composition of the present invention with water so that the content of component (a) is within this range. The specific dilution ratio may be preferably 500 times or more, more preferably 800 times or more, and preferably 5000 times or less, and more preferably 3000 times or less, from the viewpoint of cleaning performance and finish (flexibility, wrinkle reduction).

[0084] In the textile processing method of the present invention, for example, component (a) can be brought into contact with the fibers at concentrations of 0.001% owf or higher, further 0.01% owf or higher, 10% owf or lower, and further 1% owf or lower. Here, "% owf" is an abbreviation for "% on the weight of fabric," and means the percentage of the mass of a certain component (such as component (a)) relative to the mass of the fibers. Furthermore, in the textile product processing method of the present invention, for example, component (b) can be brought into contact with the fibers at a concentration of 0.0001% owf or more, then 0.001% owf or more, then 10% owf or less, and then 1% owf or less.

[0085] The textile processing method of the present invention can be carried out, for example, using a household washing machine or a commercial washing machine. The conditions used can be the temperature, time, bath ratio, etc., that are normally used. The textile processing method of the present invention can reduce the frictional force between fibers in a wet state. This makes it easier to remove the textile product after washing. In addition, washing damage to the textile product is reduced, and wrinkles in the textile product are reduced after washing.

[0086] In addition to the embodiments described above, the present invention discloses the following embodiments. <1> A friction-reducing agent for textiles, comprising the following components (a) and (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Components: Sulfosuccinate esters or salts thereof having hydrocarbon groups with 5 to 18 carbon atoms.

[0087] <2> (a) The number of carbon atoms in the component is preferably 18 or more, preferably 22 or less, and more preferably 20 or less. <1> The friction-reducing agent for textiles described above.

[0088] <3> (b) The component is a sulfosuccinate diester or salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms. <1> or <2> The friction-reducing agent for textiles described above.

[0089] <4> (b) The component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms, and the sum of the carbon atoms of the two hydrocarbon groups is 20 or more. <1> ~ <3> A textile friction reducer as described in any of the following.

[0090] <5> (b) The component is a compound represented by the following general formula (b1): <1> or <2> The friction-reducing agent for textiles described above.

[0091] [ka]

[0092] [In the formula, R 1 , R 2 Each of these is a hydrocarbon group having 5 to 18 carbon atoms, preferably a hydrocarbon group having 5 to 18 carbon atoms and having a branched chain, and A 1 O, A 2O is an alkylene oxy group with 2 to 4 carbon atoms, x1 and x2 are the average number of moles added, each between 0 and 10, and M is a cation.

[0093] <6> In general formula (b1), R 1 , R 2 The hydrocarbon group is an alkyl group or an alkenyl group. <5> The friction-reducing agent for textiles described above.

[0094] <7> In general formula (b1), R 1 , R 2 The number of carbon atoms in the hydrocarbon group is preferably 6 or more, more preferably 8 or more, even more preferably 10 or more, and preferably 15 or less, more preferably 12 or less. <5> or <6> The friction-reducing agent for textiles described above.

[0095] <8> In general formula (b1), R 1 , R 2 The number of carbon atoms in the side chains of the hydrocarbon groups of the branched chain is preferably 2 or more, more preferably 3 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. In general formula (b1), R 1 , R 2 However, preferably it is a branched alkyl group having 8 to 12 carbon atoms, more preferably a branched alkyl group having 10 to 12 carbon atoms, and even more preferably a branched alkyl group having 10 carbon atoms. <5> ~ <7> A textile friction reducer as described in any of the following.

[0096] <9> In general formula (b1), R 1 , R 2 However, each is preferably a group selected from a 2-ethylhexyl group and a 2-propylheptyl group, more preferably a 2-propylheptyl group. <5> ~ <8> A textile friction reducer as described in any of the following.

[0097] <10> In general formula (b1), A 1 O, A2 Each O is an alkylene oxy group having 2 to 4 carbon atoms, preferably 2 or 3 carbon atoms. In general formula (b1), x1 and x2 are A 1 O, A 2 This represents the average number of moles of O added, and each number is between 0 and 10, preferably 6 or less, more preferably 4 or less, even more preferably 2 or less, and even more preferably 0. <5> ~ <9> A textile friction reducer as described in any of the following.

[0098] <11> In general formula (b1), M is preferably an alkali metal ion or an alkanolammonium ion, more preferably a sodium ion, a potassium ion, a triethanolammonium ion, a diethanolammonium ion, or a monoethanolammonium ion, and even more preferably a sodium ion. <5> ~ <10> A textile friction reducer as described in any of the following.

[0099] <12> (a) The content of component is preferably 1% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 20% by mass or more, and preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 30% by mass or less. <1> ~ <11> A textile friction reducer as described in any of the following.

[0100] <13> (b) The content of component is preferably 1% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less, and even more preferably 20% by mass or less. <1> ~ <12> A textile friction reducer as described in any of the following.

[0101] <14> The ratio of the content of component (b) to the total content of component (a) and component (b) is preferably 25% by mass or more, more preferably 50% by mass or more, and preferably 80% by mass or less, more preferably 75% by mass or less. <1> ~ <13> A textile friction reducer as described in any of the following.

[0102] <15> A method for reducing interfiber friction, comprising contacting the fibers with the following components (a) and (b) in such an amount that the ratio of the amount of component (b) to the total amount of component (a) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Components: Sulfosuccinate esters or salts thereof having hydrocarbon groups with 5 to 18 carbon atoms.

[0103] <16> (a) The number of carbon atoms in the component is preferably 18 or more, preferably 22 or less, and more preferably 20 or less. <15> A method for reducing interfiber friction as described above.

[0104] <17> (b) The component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms, and the sum of the carbon atoms of the two hydrocarbon groups is 20 or more. <15> or <16> A method for reducing interfiber friction as described above.

[0105] <18> (b) The component is a compound represented by the following general formula (b1): <15> or <16> A method for reducing interfiber friction as described above.

[0106] [ka]

[0107] [In the formula, R 1 , R 2 Each of these is a hydrocarbon group having 5 to 18 carbon atoms, preferably a hydrocarbon group having 5 to 18 carbon atoms and having a branched chain, and A 1O, A 2 O is an alkylene oxy group with 2 to 4 carbon atoms, x1 and x2 are the average number of moles added, each between 0 and 10, and M is a cation.

[0108] <19> In general formula (b1), R 1 , R 2 The number of carbon atoms in the side chains of the hydrocarbon groups of the branched chain is preferably 2 or more, more preferably 3 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. In general formula (b1), R 1 , R 2 However, preferably it is a branched alkyl group having 8 to 12 carbon atoms, more preferably a branched alkyl group having 10 to 12 carbon atoms, and even more preferably a branched alkyl group having 10 carbon atoms. <18> A method for reducing interfiber friction as described above.

[0109] <20> In general formula (b1), R 1 , R 2 However, each is preferably a group selected from a 2-ethylhexyl group and a 2-propylheptyl group, more preferably a 2-propylheptyl group. <18> or <19> A method for reducing interfiber friction as described above.

[0110] <21> The ratio of the content of component (b) to the total content of component (a) and component (b) is preferably 25% by mass or more, more preferably 50% by mass or more, and preferably 80% by mass or less, more preferably 75% by mass or less. <18> ~ <21> A method for reducing interfiber friction as described in any of the following.

[0111] <22> A textile cleaning agent composition containing the following components (a) and (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Components: Sulfosuccinate esters or salts thereof having hydrocarbon groups with 5 to 18 carbon atoms.

[0112] <23> (a) The number of carbon atoms in the component is preferably 18 or more, preferably 22 or less, and more preferably 20 or less. <22> The textile cleaning agent composition described above.

[0113] <24> (b) The component is a sulfosuccinate diester or salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms. <22> or <23> The textile cleaning agent composition described above.

[0114] <25> (b) The component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms, and the sum of the carbon atoms of the two hydrocarbon groups is 20 or more. <22> ~ <24> A textile cleaning agent composition as described in any of the above.

[0115] <26> (b) The component is a compound represented by the following general formula (b1): <22> or <23> The textile cleaning agent composition described above.

[0116] [ka]

[0117] [In the formula, R 1 , R 2 Each of these is a hydrocarbon group having 5 to 18 carbon atoms, preferably a hydrocarbon group having 5 to 18 carbon atoms and having a branched chain, and A 1 O, A 2 O is an alkylene oxy group with 2 to 4 carbon atoms, x1 and x2 are the average number of moles added, each between 0 and 10, and M is a cation.

[0118] <27> In general formula (b1), R 1 , R 2The hydrocarbon group is an alkyl group or an alkenyl group. <26> The textile cleaning agent composition described above.

[0119] <28> In general formula (b1), R 1 , R 2 The number of carbon atoms in the hydrocarbon group is preferably 6 or more, more preferably 8 or more, even more preferably 10 or more, and preferably 15 or less, more preferably 12 or less. <26> or <27> The textile cleaning agent composition described above.

[0120] <29> In general formula (b1), R 1 , R 2 The number of carbon atoms in the side chains of the hydrocarbon groups of the branched chain is preferably 2 or more, more preferably 3 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. In general formula (b1), R 1 , R 2 However, preferably it is a branched alkyl group having 8 to 12 carbon atoms, more preferably a branched alkyl group having 10 to 12 carbon atoms, and even more preferably a branched alkyl group having 10 carbon atoms. <26> ~ <28> A textile cleaning agent composition as described in any of the above.

[0121] <30> In general formula (b1), R 1 , R 2 However, each is preferably a group selected from a 2-ethylhexyl group and a 2-propylheptyl group, more preferably a 2-propylheptyl group. <26> ~ <29> A textile cleaning agent composition as described in any of the above.

[0122] <31> In general formula (b1), A 1 O, A 2 Each O is an alkylene oxy group having 2 to 4 carbon atoms, preferably 2 or 3 carbon atoms. In general formula (b1), x1 and x2 are A 1 O, A 2This represents the average number of moles of O added, and each number is between 0 and 10, preferably 6 or less, more preferably 4 or less, even more preferably 2 or less, and even more preferably 0. <26> ~ <30> A textile cleaning agent composition as described in any of the above.

[0123] <32> In general formula (b1), M is preferably an alkali metal ion or an alkanolammonium ion, more preferably a sodium ion, a potassium ion, a triethanolammonium ion, a diethanolammonium ion, or a monoethanolammonium ion, and even more preferably a sodium ion. <26> ~ <31> A textile cleaning agent composition as described in any of the above.

[0124] <33> (a) The content of component is preferably 1% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, even more preferably 20% by mass or more, and preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 30% by mass or less. <22> ~ <32> A textile cleaning agent composition as described in any of the above.

[0125] <34> (b) The content of component is preferably 1% by mass or more, more preferably 5% by mass or more, even more preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, even more preferably 30% by mass or less, and even more preferably 20% by mass or less. <22> ~ <33> A textile cleaning agent composition as described in any of the above.

[0126] <35> The ratio of the content of component (b) to the total content of component (a) and component (b) is preferably 25% by mass or more, more preferably 50% by mass or more, and preferably 80% by mass or less, more preferably 75% by mass or less. <22> ~ <34> A textile cleaning agent composition as described in any of the above.

[0127] <36> Furthermore, it contains the following (c) component: <22> ~ <35> A textile cleaning agent composition as described in any of the above. (c) Components: Solvent containing hydroxyl groups

[0128] <37> (c) Component is one or more organic solvents selected from the following components (c1) to (c4). <36> The textile cleaning agent composition described above. (c1) Components: Monohydric alcohol with 2 to 6 carbon atoms (c2) Components: Alcohols with 2 to 12 carbon atoms and a valency of 2 to 12. (c3) Components: Organic solvent having hydrocarbon groups with 1 to 8 carbon atoms (excluding aromatic groups that may be partially substituted), ether groups, and hydroxyl groups. (c4) Components: Organic solvent having aromatic groups, ether groups, and hydroxyl groups, which may be partially substituted.

[0129] <38> (c) The content of component is preferably 0.1% by mass or more, more preferably 1% by mass or more, even more preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, and even more preferably 25% by mass or less. <36> or <37> The textile cleaning agent composition described above.

[0130] <39> A method for treating textile products, comprising washing the textile products with a cleaning solution obtained by mixing the following components (a) and (b) and water, and then rinsing the textile products with water, wherein the ratio of the content of component (b) in the cleaning solution to the total content of components (a) and (b) in the cleaning solution is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Components: Sulfosuccinate esters or salts thereof having hydrocarbon groups with 5 to 18 carbon atoms.

[0131] <40> (a) The number of carbon atoms in the component is preferably 18 or more, preferably 22 or less, and more preferably 20 or less. <39> The processing method for textile products as described above.

[0132] <41> (b) The component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms, and the sum of the carbon atoms of the two hydrocarbon groups is 20 or more. <39> or <40> The processing method for textile products as described above.

[0133] <42> (b) The component is a compound represented by the following general formula (b1): <39> or <40> The processing method for textile products as described above.

[0134] [ka]

[0135] [In the formula, R 1 , R 2 Each of these is a hydrocarbon group having 5 to 18 carbon atoms, preferably a hydrocarbon group having 5 to 18 carbon atoms and having a branched chain, and A 1 O, A 2 O is an alkylene oxy group with 2 to 4 carbon atoms, x1 and x2 are the average number of moles added, each between 0 and 10, and M is a cation.

[0136] <43> In general formula (b1), R 1 , R 2 The number of carbon atoms in the side chains of the hydrocarbon groups of the branched chain is preferably 2 or more, more preferably 3 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. In general formula (b1), R 1 , R 2 However, preferably it is a branched alkyl group having 8 to 12 carbon atoms, more preferably a branched alkyl group having 10 to 12 carbon atoms, and even more preferably a branched alkyl group having 10 carbon atoms. <42> The processing method for textile products as described above.

[0137] <44> In general formula (b1), R 1 , R 2 However, each is preferably a group selected from a 2-ethylhexyl group and a 2-propylheptyl group, more preferably a 2-propylheptyl group. <42> or <43> A method for reducing interfiber friction as described above.

[0138] <45> The ratio of the content of component (b) to the total content of component (a) and component (b) in the cleaning solution is preferably 25% by mass or more, more preferably 50% by mass or more, and preferably 80% by mass or less, more preferably 75% by mass or less. <39> ~ <44> A method for processing textile products as described in one of the following.

[0139] <46> The cleaning solution further contains the following component (c): <39> ~ <45> A method for processing textile products as described in any of the following. (c) Components: Solvent containing hydroxyl groups

[0140] <47> (c) Component is one or more organic solvents selected from the following components (c1) to (c4). <46> The processing method for textile products as described above. (c1) Components: Monohydric alcohol with 2 to 6 carbon atoms (c2) Components: Alcohols with 2 to 12 carbon atoms and a valency of 2 to 12. (c3) Components: Organic solvent having hydrocarbon groups with 1 to 8 carbon atoms (excluding aromatic groups that may be partially substituted), ether groups, and hydroxyl groups. (c4) Components: Organic solvent having aromatic groups, ether groups, and hydroxyl groups, which may be partially substituted.

[0141] <48> The concentration of component (a) in the washing solution is preferably 0.0001% by mass or more, more preferably 0.0005% by mass or more, and preferably 10% by mass or less, more preferably 1% by mass or less. <39> ~ <47> A method for processing textile products as described in any of the following.

[0142] <49> Use as a friction-reducing agent for textiles, comprising the following components (a) and (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Components: Sulfosuccinate esters or salts thereof having hydrocarbon groups with 5 to 18 carbon atoms.

[0143] <50> (a) The number of carbon atoms in the component is preferably 18 or more, preferably 22 or less, and more preferably 20 or less. <49> Use as described above.

[0144] <51> (b) The component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups with 5 to 18 carbon atoms, and the sum of the carbon atoms of the two hydrocarbon groups is 20 or more. <49> or <50> Use as described above.

[0145] <52> (b) The component is a compound represented by the following general formula (b1): <49> or <50> Use as described in any of the following.

[0146] [ka]

[0147] [In the formula, R 1 , R 2 Each of these is a hydrocarbon group having 5 to 18 carbon atoms, preferably a hydrocarbon group having 5 to 18 carbon atoms and having a branched chain, and A 1 O, A 2O is an alkylene oxy group with 2 to 4 carbon atoms, x1 and x2 are the average number of moles added, each between 0 and 10, and M is a cation.

[0148] <53> In general formula (b1), R 1 , R 2 However, each is preferably a group selected from a 2-ethylhexyl group and a 2-propylheptyl group, more preferably a 2-propylheptyl group. <52> Use as described above. [Examples]

[0149] The components used in the examples and comparative examples are shown below. (a) component • C18IOS: A potassium internal olefin sulfonate salt with 18 carbon atoms. The mass ratio of the olefin (potassium olefin sulfonate) to the hydroxyl (potassium hydroxyalkanesulfonate) in the C18IOS is 16 / 84. The mass ratio of the positional distribution of the sulfonic acid groups in the HAS compound in the C18IOS is as follows: 1st position / 2nd position / 3rd position / 4th position / 5th position / 6th-9th position = 1.5 / 22.1 / 17.2 / 21.8 / 13.5 / 23.9. Also, (IO-1S) / (IO-2S) = 1.6 (mass ratio). The positional distribution of the sulfonic acid groups in the HAS compound contained in the C18IOS was measured using a liquid chromatography-mass spectrometer (LC-MS). Note that internal olefin sulfonates with double bonds located at position 6 or higher could not be clearly fractionated due to overlapping peaks. The equipment and analytical conditions used for the measurement are as follows. [Measuring equipment] LC device: "LC-20ASXR" (manufactured by Shimadzu Corporation) LC-MS device: "LCMS-2020" (manufactured by Shimadzu Corporation) Column: ODS Hypersil (Length: 250 mm, Inner diameter: 4.6 mm, Particle size: 3 μm, Thermo Fisher Scientific) Detector: ESI(-), m / z = 349.15 (C18), 321.10 (C16), 293.05 (C14) [Solvent] Solvent A: 10 mM aqueous solution of ammonium acetate Solvent B: Acetonitrile / water = 95 / 5 solution added with 10 mM ammonium acetate [Elution conditions] Gradient: Solvent A 60% and Solvent B 40% (0 - 15 minutes) → Solvent A 30% and Solvent B 70% (15.1 - 20 minutes) → Solvent A sixty % and Solvent B 40% (20.1 - 30 minutes) Flow rate: 0.5 ml / min Column temperature: 40 °C Injection volume: 5 μl

[0150] (b) component · Sodium di-2-ethylhexyl sulfosuccinate · Sodium bis-2-propylheptyl sulfosuccinate

[0151] (x) component (other surfactants) · APES: Sodium (polyoxypropylene) polyoxyethylene lauryl ether sulfate, where the alkyl group is derived from lauryl alcohol, the average number of moles of added propyleneoxy groups is 2 moles, and the average number of moles of added ethyleneoxy groups is 2 moles · LAS: Sodium alkylbenzenesulfonate (alkyl composition: C10 / C11 / C12 / C13 = 11 / 29 / 34 / 26 (mass ratio), mass average carbon number = 17.75) · AES: Sodium polyoxyalkylene alkyl ether sulfate (Emal 20C, manufactured by Kao Corporation) · Lauric acid: Lunac L-98, manufactured by Kao Corporation · C16IOS: Potassium 16-carbon internal olefin sulfonate obtained in the following production example [Production example of C16IOS] 7000g (28.9 mol) of 1-hexadecanol (product name: Calcol 6098, manufactured by Kao Corporation) and 700g (10% by mass relative to the starting alcohol) of γ-alumina (STREMChemicals, Inc.) as a solid acid catalyst were charged into a flask equipped with a stirring device. The reaction was carried out at 280°C with stirring, while nitrogen (7000 mL / min.) was circulated through the system to allow the reaction time to change to the desired internal olefin. The resulting crude internal olefin was transferred to a distillation flask and distilled at 136-160°C / 4.0 mmHg to obtain a carbon-16 internal olefin with 100% olefin purity. The obtained internal olefin 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 / 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 potassium C16 internal olefin sulfonate product. This composition was evaporated to dryness to obtain potassium C16 internal olefin sulfonate. The content (mass%) of C16IOS was 1st / 2nd / 3rd / 4th / 5th-8th = 0.7 / 32.1 / 24.2 / 25.8 / 17.2. (IO-1S) / (IO-2S) = 4.8. • C12 / 14EO9PO2EO9: Polyoxyethylene-polyoxypropylene-polyoxyethylene mixed alkyl ether (a compound in which a mixed alkyl group of 12 carbon atoms and 14 carbon atoms (7 / 3 by mass ratio) is bonded in the order of polyoxyethylene group, polyoxypropylene group, and polyoxyethylene group, with an average number of added moles of oxyethylene groups being 9 moles and 9 moles, and an average number of added moles of oxypropylene groups being 2). • C12 / 14EO10: Polyoxyethylene mixed alkyl ether (a compound in which the mixed alkyl group consists of a C12 alkyl group and a C14 alkyl group (7 / 3 by mass ratio), and the average number of added oxyethylene groups is 10 moles)

[0152] <Example 1 and Comparative Example 1> A friction-reducing agent for fibers with the composition shown in Table 1 was prepared, and its effect on reducing friction between fibers was evaluated using the following method. The results are shown in Table 1.

[0153] [Interfiber friction (coefficient of dynamic friction when wet)] (1) Pretreatment of fibers (1-1) Pre-treatment of garment adjustment fabric Beforehand, approximately 1.6 kg of commercially available underwear (Gunze YG underwear, 100% cotton, size L) was washed five times in a Panasonic NA-F70PB1 automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average number of moles added: 8)). (4.5 g of nonionic surfactant used, standard course, 45 L of water, 25°C water temperature, 12 minutes washing time, 2 rinses). Afterwards, it was dried for one day under conditions of 25°C and 43% RH.

[0154] (1-2) Pre-treatment of cotton towels First, commercially available towels (Senshu towels, 100% cotton, 34cm x 86cm x 24 pieces) were washed five times consecutively in a Panasonic NA-F70PB1 automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average number of moles added: 8)). (Nonionic surfactant usage: 4.5g, standard course, water volume: 45L, water temperature: 25℃, washing time: 10 minutes, rinse twice). Afterwards, they were dried for one day under conditions of 25℃ and 43%RH.

[0155] (2) Treatment of the evaluation test fabric using a drum-type washing machine 24g of the textile friction-reducing agent shown in Table 1 was measured out, and two towels that had undergone the aforementioned pretreatment were washed three times in a drum-type washer-dryer (Panasonic NA-VX3800L) with tap water (25℃), a total load of 4kg of clothing, on the standard course (15 minutes wash, 1 rinse, 5 minutes spin). Underwear, which was a pre-treated garment adjustment fabric, was used to adjust the weight of the clothing. Afterwards, the towels were removed from the washing tub, lightly shaken, and hung up to dry for one day under conditions of 25℃ and 43%RH. After drying, the plain weave portion of the towels was cut into 2cm x 2cm pieces to be used as test specimens.

[0156] (3) Measurement of fiber friction Using the towel piece processed in (2) above, a dynamic friction measuring machine (Trinity Labs TL201Tt Dynamic friction measurements were performed using the following method: A towel piece (2cm x 2cm) was attached to the friction measurement area with double-sided tape. 100 μL of an aqueous solution containing the textile friction reducer shown in Table 1 at a concentration of 0.53 g / L was dropped onto the attached towel piece. Measurements were taken at a speed of 1.0 mm / s with a load of 70 g, and the average of three measurements was taken as the value. The results are shown in Table 1.

[0157] [Table 1]

[0158] <Example 2 and Comparative Example 2> The liquid detergent compositions for textiles shown in Table 2 were prepared by the following method and evaluated for the following items. The results are shown in Table 2.

[0159] [Preparation of liquid detergent compositions for textiles] A 200 mL glass beaker was charged with a 5 cm long Teflon (registered trademark) stirrer piece and weighed. Next, 20 g of ion-exchanged water at 25 °C, component (c), then component (a), then component (b) and / or component (x) were added in this order, and the top of the beaker was sealed with Saran Wrap (registered trademark). The beaker containing the contents was placed in a 60 °C water bath installed on a magnetic stirrer and stirred at 100 r / min for 30 minutes within a temperature range of 60 ± 2 °C for the water temperature in the water bath. Thereafter, the pH of the contents was adjusted to pH 7 with an alkali agent (monoethanolamine) or an acid agent (citric acid). The pH was measured by the pH measurement method described above. Next, the water in the water bath was replaced with tap water at 5 °C, and after cooling the composition in the beaker until its temperature reached 25 °C, other components were further added and stirred for 10 minutes. Next, the Saran Wrap (registered trademark) was removed, ion-exchanged water was added so that the mass of the contents became 200 g, and it was stirred again at 1,00 r / min for 5 minutes to obtain the liquid detergent composition for fibers described in Table 2.

[0160] [Evaluation method for detergency] (1) Preparation of model sebum artificial contaminated cloth A model sebum artificial contaminated cloth was prepared by attaching a model sebum artificial contaminated liquid having the following composition to the cloth. The attachment of the model sebum artificial contaminated liquid to the cloth was carried out by printing the artificial contaminated liquid on the cloth using a gravure roll coater. The step of attaching the model sebum artificial contaminated liquid to the cloth to produce the model sebum artificial contaminated liquid was carried out with a cell volume of 58 cm 3 / m 2 , a coating speed of

1.0 m / min, a drying temperature of 100 °C, and a drying time of 1 min. The cloth used was cotton 2003 (manufactured by Taniguchi Shoten). *Composition of the model sebum artificial contamination solution: Lauric acid 0.4% by mass, Myristic acid 3.1% by mass, Pentadecanoic acid 2.3% by mass, Palmitic acid 6.2% by mass, Heptadecanoic acid 0.4% by mass, Stearic acid 1.6% by mass, Oleic acid 7.8% by mass, Triolein 13.0% by mass, Palmitic acid n-hexadecyl 2.2% by mass, Squalene 6.5% by mass, Egg white lecithin liquid crystal 1.9% by mass, Kanuma red clay 8.1% by mass, Carbon black 0.01% by mass, Water balance (total 100% by mass)

[0161] (2) Evaluation of detergency Five pieces of the model sebum artificial contamination cloth (6 cm × 6 cm) prepared above were washed at 85 rpm for 10 minutes using a Tergotometer (Ueshima, MS-8212). For all washing conditions, tap water (3.5°dH, 25°C) was injected so that the concentration of the liquid detergent composition for fibers described in Table 2 was 0.083% by mass, and the washing was performed at a water temperature of 25°C. After washing, it was rinsed with tap water (25°C) for 3 minutes and then dried. The washing rate (%) was measured by the following method, and the average value of five pieces was determined. The results are shown in Table 2. The reflectance of the original cloth before contamination and at 550 nm before and after washing was measured using a colorimetric color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., Z-300A). In this evaluation, the washing rate is preferably 20% or more, and a higher value is more preferable. Washing rate (%) = 100 × [(Reflectance after washing - Reflectance before washing) / (Reflectance of the original cloth - Reflectance before washing)]

[0162] [Evaluation method for softening performance and wrinkle suppression ability] (1) Pretreatment of the evaluation test cloth (1-1) Pretreatment of cotton towels Approximately 1.6 kg of commercially available towels (Quanzhou towels, 100% cotton, 34 cm × 8 cm × 12 pieces) were washed continuously 5 times using a fully automatic washing machine Panasonic NA-F70PB1 with a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average number of added moles 8)) (amount of nonionic surfactant used 4.5 g, standard course, water volume 45 L, water temperature 25°C, washing time 10 minutes, rinsing 2 times). Then, it was dried for 1 day under the conditions of 25°C and 43% RH.

[0163] (1-2) Pre-treatment of cotton T-shirts First, approximately 1.5 kg of commercially available T-shirts (UNIQLO crew neck T-shirts (M), 100% cotton, 10 pieces) were washed five times consecutively in a Panasonic NA-F70PB1 fully automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average number of moles added: 8)). (4.5 g of nonionic surfactant used, standard course, 45 L of water, 25°C water temperature, 10 minutes washing time, 2 rinses). Afterwards, they were dried for one day under conditions of 25°C and 43% RH.

[0164] (1-3) Pre-treatment of garment adjustment fabrics Beforehand, approximately 1.6 kg of commercially available underwear (Gunze YG underwear, 100% cotton, size L) was washed five times in a Panasonic NA-F70PB1 automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average number of moles added: 8)). (4.5 g of nonionic surfactant used, standard course, 45 L of water, 25°C water temperature, 12 minutes washing time, 2 rinses). Afterwards, it was dried for one day under conditions of 25°C and 43% RH.

[0165] (2) Washing of the fibers to be evaluated 24g of the composition shown in Table 2 was measured out, and two pre-treated towels and two T-shirts were washed three times in a drum-type washer-dryer (Panasonic NA-VX3800L) with tap water (25°C) and a total load of 4kg of clothing. Underwear, which was pre-treated as described above, was used to adjust the weight of the clothing. Afterwards, the clothes were removed from the washing tub, lightly shaken, and hung up to dry for one day at 25°C and 43%RH.

[0166] (3) Evaluation of flexibility The softness of cotton towels treated according to (2) using the liquid detergent compositions for textiles listed in Table 2 was scored by six experts in textile texture evaluation according to the following criteria, and the average score of the six was calculated. In this process, a score for each cotton towel was obtained from one evaluator for each composition, and the average of these scores was used as the evaluation score for that composition. These evaluation scores were compiled from the six evaluators, and the average score was calculated. The results are shown in Table 2. The table shows values ​​rounded to one decimal place. In this evaluation, an average score of 1 or higher is preferable, and a higher numerical value is preferable. -1…The cotton towels treated with the composition of Comparative Example 2-1 do not turn out as soft. 0…The result was equivalent in softness to a cotton towel treated with the composition of Comparative Example 2-1. 1. The finished product was slightly softer compared to a cotton towel treated with the composition of Comparative Example 2-1. 2. The cotton towels treated with the composition of Comparative Example 2-1 were softer. 3. The cotton towels treated with the composition of Comparative Example 2-1 were significantly softer.

[0167] (4) Evaluation of wrinkle-inhibiting ability The wrinkle condition of T-shirts washed, rinsed, and dried using the liquid detergent compositions for textiles listed in Table 2 was scored by six experts in textile texture evaluation according to the following criteria, and the average score of the six was calculated. The results are shown in Table 2. The table shows values ​​rounded to one decimal place. In this evaluation, an average score of 1 or higher is preferable, and a higher numerical value is preferable. -1…The T-shirts treated with the composition of Comparative Example 2-1 had more wrinkles. 0…The T-shirt treated with the composition of Comparative Example 2-1 achieved a wrinkled state equivalent to that of the T-shirt treated with the composition of Comparative Example 2-1. 1. Compared to the T-shirt treated with the composition of Comparative Example 2-1, the finished product had slightly fewer wrinkles. 2. Compared to T-shirts treated with the composition of Comparative Example 2-1, the T-shirts had fewer wrinkles. 3. Compared to T-shirts treated with the composition of Comparative Example 2-1, the finished product had significantly fewer wrinkles.

[0168] Table 2

Claims

1. A friction-reducing agent for textiles, comprising the following components (a) and (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Ingredients: Bis-2-propylheptyl sulfosuccinate or salt thereof

2. The textile friction reducing agent according to Claim 1, wherein the ratio of the content of component (b) to the total content of component (a) and component (b) is 50% by mass or more and less than 100% by mass.

3. A method for reducing interfiber friction, comprising contacting the fibers with the following components (a) and (b) in such an amount that the ratio of the amount of component (b) to the total amount of component (a) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Ingredients: Bis-2-propylheptyl sulfosuccinate or salt thereof

4. A textile cleaning agent composition containing the following components (a) and (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Ingredients: Bis-2-propylheptyl sulfosuccinate or salt thereof

5. A method for treating textile products, comprising washing the textile products with a cleaning solution obtained by mixing the following components (a) and (b) and water, and then rinsing the textile products with water, wherein the ratio of the content of component (b) in the cleaning solution to the total content of components (a) and (b) in the cleaning solution is 20% by mass or more and less than 100% by mass. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Ingredients: Bis-2-propylheptyl sulfosuccinate or salt thereof

6. Use of an agent containing the following components (a) and (b), wherein the ratio of component (b) to the total content of components (a) and (b) is 20% by mass or more and less than 100% by mass, as a friction reducing agent for textiles. (a) Components: Internal olefin sulfonates with 17 to 24 carbon atoms (b) Ingredients: Bis-2-propylheptyl sulfosuccinate or salt thereof

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