Fiber cleaning composition

Abstract

The present application is a friction reducing agent for fibers, which contains the following (a) component and (b) component. Further, the present application is a cleaner composition for fibers, which contains the following (a) component and (b) component, and the content ratio of the (b) component with respect to the total content of the (a) component and the (b) component is 20 mass% or more and less than 100 mass%.(a) component: internal olefin sulfonate having 17 or more and 24 or less carbon atoms; (b) component: sulfosuccinic acid ester or a salt thereof having a hydrocarbon group having 5 or more and 18 or less carbon atoms.

Description

Technical Field

[0001] This invention relates to a friction reducer for fibers, a cleaning agent composition for fibers, and a method for treating fiber products. Background Technology

[0002] For a long time, anionic surfactants such as alkylbenzene sulfonates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, internal olefin sulfonates, and sulfosuccinates have been used as cleaning ingredients for both household and industrial applications.

[0003] Japanese Patent Application Publication No. 2015-28123 discloses an internal olefin sulfonate composition with excellent foaming properties, which contains an internal olefin sulfonate with 16 carbon atoms and an internal olefin sulfonate with 18 carbon atoms in a specific ratio, and the ratio of hydroxyl body to olefin body is specific.

[0004] International Publication No. 2018 / 030328 discloses a surfactant composition containing, under certain conditions, an internal olefin sulfonic acid and / or its salt, an anionic surfactant other than the internal olefin sulfonic acid and / or its salt, a nonionic surfactant, and water.

[0005] International Publication No. 1998 / 024865 discloses a surfactant composition useful as a liquid laundry detergent, which contains a specific nonionic surfactant and anionic surfactants such as alkyl sulfonate fatty acid salts and dialkyl sulfonate succinates in a specific formulation ratio.

[0006] In addition, in recent years, due to the diversification of consumer values, there is a demand for cleaning agents that achieve a high level of final finish in many aspects, such as better stain removal and softness of textiles. Various studies have been conducted on the development of cleaning agents that meet such requirements (Japanese Patent Application Publication No. 2005-154505, Japanese Patent Application Publication No. 2020-63435). Summary of the Invention

[0007] If a washing machine is used to wash textile products, the wet fibers may become entangled during the washing process, making it difficult to remove the products from the machine after washing. This is believed to be due to the friction generated between the wet fibers during washing. If this friction is strong, the dried textile products tend to wrinkle more easily and lose more softness.

[0008] The present invention provides a friction reducer for fibers that further reduces the friction between fibers in a wet state and makes it easier to remove fiber products from a washing machine after washing, as well as a fiber cleaning agent composition that takes into account both cleanliness and final finish (softness, wrinkle reduction) even in actual use environments, and a method for treating fiber products.

[0009] This invention relates to a friction reducing agent for fibers, comprising component (a) and component (b), wherein the content of component (b) relative to the total content of component (a) and component (b) is 20% by mass or more and less than 100% by mass.

[0010] (a) Composition: Internal olefin sulfonates with 17 to 24 carbon atoms;

[0011] (b) Ingredients: sulfosuccinates or their salts having a hydrocarbon group having 5 to 18 carbon atoms.

[0012] In addition, the present invention relates to a method for reducing inter-fiber friction, wherein the above-mentioned components (a) and (b) are brought into contact with the fiber in an amount where the ratio of the amount of component (b) to the total amount of components (a) and (b) is 20% by mass or more and less than 100% by mass.

[0013] In addition, the present invention relates to a cleaning agent composition for fibers containing the above-mentioned component (a) and component (b), wherein the content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b).

[0014] In addition, the present invention relates to a method for treating fiber products, wherein the fiber products are cleaned with a cleaning solution obtained by mixing the above-mentioned component (a), component (b) and water, and then the fiber products are rinsed with water, and the ratio of the content of component (b) in the cleaning solution to the total content of component (a) and component (b) in the cleaning solution is 20% by mass or more and less than 100% by mass.

[0015] According to the present invention, a fiber friction reducer and a method for reducing inter-fiber friction can be provided to further reduce the friction between fibers in a wet state and make the fiber articles easier to remove from the washing machine after washing; a fiber cleaning agent composition and a method for treating fiber articles can be provided to balance cleanliness and final finish (softness, wrinkle reduction) even in actual use environments. Detailed Implementation

[0016] This invention discovers that by using components (a) and (b) in a specific ratio, a fiber friction reducer and a method for reducing inter-fiber friction can be obtained, which can further reduce the friction between wet fibers and make fiber products easier to remove from a washing machine after washing (e.g., after spin-drying). Furthermore, this invention discovers that by using components (a) and (b) in a specific ratio, a fiber cleaning agent composition and a method for treating fiber products can be obtained, which balances cleanliness and final finish (softness, wrinkle reduction) even in practical use environments. The mechanism is not yet clear, but it is speculated that the fiber friction reducer and fiber cleaning agent composition of this invention reduce the friction between wet fibers during washing by forming a hydrated solid of component (b) on the fiber surface, while maintaining good cleanliness. The hydrated solid also includes component (a), and it is believed that the increased formation of hydrated solids resulting from the synergistic effect of a combination of a specific anionic surfactant (component (a)) and a specific anionic surfactant (component (b)) different from component (a) contributes to reducing the friction between wet fibers. It is believed that this provides a fiber friction reducing agent and a method for reducing inter-fiber friction, which suppresses tangling of fiber products and makes it easier to remove the fiber products from the washing machine after washing (e.g., after spin-drying), as well as a fiber cleaning agent composition and a method for treating fiber products that take into account both cleanliness and final finish (softness, wrinkle reduction) even in actual use environments.

[0017] <Friction reducing agents for fibers and methods for reducing inter-fiber friction>

[0018] The fiber friction reducing agent of the present invention contains an internal olefin sulfonate having 17 to 24 carbon atoms as component (a) and a sulfosuccinate or its salt having a hydrocarbon group having 5 to 18 carbon atoms as component (b). The content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b).

[0019] The fiber friction reducing agent of the present invention is a formulation that imparts a friction-reducing effect to fibers, and contains component (a) and component (b) as its active ingredients.

[0020] The (a) component of the present invention is an internal olefin sulfonate with 17 to 24 carbon atoms. The number of carbon atoms in the internal olefin sulfonate of component (a) represents the number of carbon atoms in the internal olefin to which the sulfonate is covalently bonded. From the viewpoint of reducing friction between fibers in a wet state, improving cleanliness, softness, and reducing wrinkles, the number of carbon atoms in the internal olefin sulfonate of component (a) is preferably 18 or more, more preferably 22 or less, and more preferably 20 or less.

[0021] The internal olefin sulfonate, as component (a), is a sulfonate obtained by sulfonating, neutralizing, and hydrolyzing an internal olefin (an olefin with a double bond inside the olefin chain) with 17 to 24 carbon atoms as a raw material. This internal olefin also includes so-called α-olefins (hereinafter also referred to as α-olefins) containing trace amounts of double bonds at the 1-position of the carbon chain. Furthermore, if the internal olefin is sulfonated, β-sulfonolactone is quantitatively generated, a portion of which becomes γ-sulfonolactone or olefin sulfonic acid. These are further converted into hydroxyalkane sulfonates and olefin sulfonates during neutralization and hydrolysis processes (e.g., J. Am. Oil Chem. Soc. 69, 39 (1992)). Here, the hydroxyl group of the obtained hydroxyalkane sulfonate is located inside the alkane chain, and the double bond of the olefin sulfonate is located inside the olefin chain. In addition, the obtained product is mainly a mixture of these, and there are also cases where a portion contains trace amounts of hydroxyalkane sulfonates with hydroxyl groups at the ends of the carbon chain, or olefin sulfonates with double bonds at the ends of the carbon chain.

[0022] In this specification, these products and mixtures thereof are collectively referred to as internal olefin sulfonates ((a) component). Additionally, hydroxyalkane sulfonates are referred to as the hydroxyl body of internal olefin sulfonates (hereinafter also called HAS body), and olefin sulfonates are referred to as the olefin body of internal olefin sulfonates (hereinafter also called IOS body).

[0023] Furthermore, the mass ratio of the HAS to IOS forms of the compound in component (a) can be determined using high-performance liquid chromatography-mass spectrometry (hereinafter referred to as HPLC-MS). Specifically, the mass ratio can be calculated based on the HPLC-MS peak area of ​​component (a).

[0024] Salts of internal olefin sulfonates can include alkali metal salts, alkaline earth metal (1 / 2 atom) salts, ammonium salts, or organic ammonium salts. Sodium and potassium salts are examples of alkali metal salts. Organic ammonium salts can include alkanolamines containing 2 to 6 carbon atoms. Organic ammonium salts also include amine salts. From the viewpoint of reduced friction between fibers in a wet state, improved cleanliness, softness, reduced wrinkles, and versatility, salts of internal olefin sulfonates are preferably alkali metal salts, and more preferably sodium or potassium salts.

[0025] As can be seen from the above preparation method, the sulfonic acid group of the internal olefin sulfonate of component (a) exists inside the carbon chain of the internal olefin sulfonate, that is, the olefin chain or the alkane chain, and there are also cases where a portion of it contains trace amounts of sulfonic acid groups at the end of the carbon chain of the olefin sulfonate.

[0026] From the viewpoint of reducing friction between fibers in a wet state, improving cleanliness, reducing wrinkles, and increasing the softness of fibers, (a) the content of internal olefin sulfonates in which the sulfonic acid group exists at position 5 or above, preferably at position 5 or above and position 9 or below, is preferably 5% by mass or above, more preferably 10% by mass or above, even more preferably 15% by mass or above, even more preferably 20% by mass or above, and preferably 60% by mass or below, more preferably 55% by mass or below, even more preferably 45% by mass or below, even more preferably 40% by mass or below.

[0027] (a) In the composition, the mass ratio of the content of internal olefin sulfonates with sulfonic acid groups at positions 2 to 4 (hereinafter sometimes referred to as (IO-1S)) to the content of internal olefin sulfonates with sulfonic acid groups at positions 5 and above, preferably positions 5 to 9 (hereinafter sometimes referred to as (IO-2S)), i.e., (IO-1S) / (IO-2S), is preferably 0.5 or more, more preferably 0.8 or more, further preferably 1.0 or more, further preferably 1.5 or more, further preferably 2 or more, further preferably 2.5 or more, further preferably 3 or more, further preferably 4 or more, and further preferably 4.5 or more. Moreover, from the viewpoint of reducing friction between fibers in a wet state, improving cleanliness, softness, reducing wrinkles, and ease of manufacturing, it is preferably 10 or less, more preferably 8 or less, and further preferably 6 or less.

[0028] Furthermore, the contents of compounds with different sulfonic acid group positions in component (a) can be determined by HPLC-MS. The contents of compounds with different sulfonic acid group positions in this specification are determined by the mass ratio of the HPLC-MS peak areas of compounds with sulfonic acid group positions in all HAS bodies of component (a).

[0029] The content of olefin sulfonate with sulfonic acid group at position 1 in component (a) is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and even more preferably 3% by mass or less, from the viewpoint of reducing friction between fibers in a wet state, improving cleanliness, reducing wrinkles, and imparting good softness to the fibers. From the viewpoint of reducing production costs and improving productivity, it is preferably 0.01% by mass or more.

[0030] The sulfonic acid groups in these compounds are located in the olefin or alkane chain.

[0031] The aforementioned internal olefin sulfonate may be a mixture of hydroxyl bodies and olefin bodies. (a) The mass ratio (olefin body / hydroxyl body) of the content of olefin bodies to the content of hydroxyl bodies of the internal olefin sulfonate in the component may be 0 / 100 or more, more preferably 5 / 95 or more, and may be 50 / 50 or less, more preferably 40 / 60 or less, more preferably 30 / 70 or less, and more preferably 25 / 75 or less.

[0032] The mass ratio of the content of the hydroxyl body of the internal olefin sulfonate to the content of the olefin body of the internal olefin sulfonate in component (a) can be determined by component (a) by HPLC-MS using the method described in the examples.

[0033] (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 can be carried out at a temperature of 20 to 40°C.

[0034] Neutralization is achieved by reacting a 1.0–1.5 molar amount of an alkaline aqueous solution, such as potassium hydroxide, ammonia, or 2-aminoethanol, with the theoretically required sulfonic acid group. Hydrolysis can be performed in the presence of water at 90–200°C for 30 minutes to 3 hours. These reactions can be carried out continuously. After the reaction is complete, purification can be achieved through extraction and washing.

[0035] In this invention, internal olefins, as described above, refer to olefins having double bonds within the olefin chain.

[0036] (b) The component is a sulfosuccinate or a salt thereof having a hydrocarbon group having 5 to 18 carbon atoms.

[0037] From the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, component (b) is preferably a sulfosuccinate diester or its salt having two hydrocarbon groups having 5 to 18 carbon atoms [hereinafter referred to as component (b1)]. Component (b) is preferably a sulfosuccinate diester or its salt having two branched hydrocarbon groups having 5 to 18 carbon atoms, 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 in the sulfosuccinate diester or its salt is preferably 30 or less, more preferably 24 or less.

[0038] As a component (b1), compounds represented by the following general formula (b1) can be listed.

[0039]

[0040] [In the formula, R] 1 R2 These are hydrocarbon groups with 5 to 18 carbon atoms, A 1 O, A 2 O represents an olefinic oxygen group with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of addition reactions, and are numbers between 0 and 10, respectively. M represents a cation.

[0041] In general formula (b1), R 1 and R 2 They can be the same or different, and are either hydrocarbon groups with 5 to 18 carbon atoms respectively. Examples of hydrocarbon groups include alkyl and alkenyl groups. From the perspectives of cleanliness, reduced inter-fiber friction when wet, increased softness, and reduced wrinkles, R... 1 and R 2 Alkyl groups are preferred.

[0042] In general formula (b1), R 1 and R 2 From the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, the number of carbon atoms in the hydrocarbon group is 5 or more, preferably 6 or more, more preferably 8 or more, and even more preferably 10 or more. From the same viewpoint, it is 18 or less, preferably 15 or less, and more preferably 12 or less.

[0043] From the perspectives of cleanliness, reduced inter-fiber friction when wet, increased softness, and reduced wrinkles, 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, more preferably 24 or less. Here, in the presence of R 1 and R 2 When two or more compounds with different total carbon atom numbers are used as components of (b1), R as a whole of (b1) 1 and R 2 The total number of carbon atoms represents the R of each compound. 1 and R 2 The molar average of the total number of carbon atoms.

[0044] In general formula (b1), R 1 and R 2 The hydrocarbon groups can be either straight-chain or branched, but from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, branched groups are preferred. In the above R... 1 and R 2When the hydrocarbon group is branched, from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, side chains with 2 or more carbon atoms are preferred, and side chains with 3 or more carbon atoms are more preferred. The number of carbon atoms in the side chain can be 10 or less, more preferably 8 or less, and more preferably 6 or less. Furthermore, R 1 and R 2 In the hydrocarbon group, the carbon atom bonded to the oxygen atom (O) in the formula is taken as the first carbon atom, the longest carbon atom arrangement is called the main chain, and the number of carbon atoms in the main chain is set as X (since R 1 and R 2 When the number of carbon atoms is 5 or more (therefore, when X is 3 or more), the hydrocarbon group bonded to any carbon from the 1st to the (X-1th)th carbon atom of the main chain is called a side chain.

[0045] In general formula (b1), R 1 and R 2 The hydrocarbon group can be either saturated or unsaturated.

[0046] Therefore, in the above general formula (b1), R 1 and R 2 At least one of them is preferably a branch.

[0047] From the perspectives of cleanliness, reduced inter-fiber friction when wet, increased softness, and reduced wrinkles, in general formula (b1), R 1 and R 2 The hydrocarbon group more preferably includes a saturated branched hydrocarbon group.

[0048] Additionally, in R 1 and R 2 In the case where the hydrocarbon group is a branched hydrocarbon group, from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, reduced wrinkles, and availability, it can be a group derived from guerbet alcohol.

[0049] From the perspectives of cleanliness, reduced inter-fiber friction when wet, increased softness, and reduced wrinkles, R in general formula (b1) 1 and R 2 Each is independent, preferably a branched alkyl group with 8 to 12 carbon atoms, more preferably a branched alkyl group with 8 to 10 carbon atoms, and even more preferably a branched alkyl group with 10 carbon atoms.

[0050] In this invention, the hydrocarbon residues after the hydroxyl group has been removed from the secondary alcohol are contained in chain-branched hydrocarbon groups such as branched alkyl groups.

[0051] In R 1 and R 2When the branched alkyl groups are 8 to 12 carbon atoms respectively, the total number of carbon atoms constituting the side chain may be the same or different. From the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, it is preferred to have 1 or more, more preferably 2 or more, and more preferably 4 or less, more preferably 3 or less, and even more preferably 3.

[0052] In this invention, the total number of carbon atoms constituting the side chain is obtained by summing the number of carbon atoms of all side chains other than the main chain in a branched alkyl group. In the case of multiple side chains, it is the total number of carbon atoms of all these side chains.

[0053] R 1 and R 2 The number of side chains can be the same or different. From the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, it is 1 or more, preferably 3 or less, and more preferably 2 or less. From the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, R 1 and R 2 The number of side chains is preferably 1.

[0054] In this invention, the number of side chains is the number of side chains branching from the main chain, and the number of side chains does not change even if the side chain further has side chains branching from that side chain. However, although the side chain can further have side chains branching from that side chain, from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, the side chain is preferably a straight chain.

[0055] In R 1 and R 2 When each is an independently branched alkyl group having 8 to 12 carbon atoms, R 1 R 2 The number of branched carbon atoms can be the same or different. From the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, it is 1 or more, preferably 3 or less, and more preferably 2 or less. From the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, R 1 and R 2 The number of branched carbon atoms is preferably 1. In this invention, the number of branched carbon atoms is the total number of tertiary carbon atoms and quaternary carbon atoms in the branched alkyl group.

[0056] From the perspectives of cleanliness, reduced inter-fiber friction when wet, increased softness, and reduced wrinkles, R 1 R 2A more preferred embodiment is a branched alkyl group with the following: the branched alkyl group has 8 or more carbon atoms and 12 or less; the main chain has 6, 7 or 8 carbon atoms respectively; the side chains have 1 or more carbon atoms respectively; preferably 1 or more carbon atoms and 4 or less carbon atoms; more preferably 2 or more carbon atoms and 4 or less carbon atoms; even more preferably 2 or more carbon atoms and 3 or less carbon atoms; even more preferably 3 carbon atoms; and the number of side chains has 3 or less carbon atoms; more preferably 2 or less carbon atoms; even more preferably 1 carbon atom.

[0057] From the perspectives of cleanliness, reduced inter-fiber friction when wet, increased softness, and reduced wrinkles, R 1 R 2 The branched alkyl groups are preferably selected from branched octyl, branched decyl, and branched dodecyl groups. From the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, branched decyl groups are more preferred. Examples of branched octyl groups include 2-ethylhexyl. Examples of branched decyl groups include 2-propylheptyl and groups derived from decanol manufactured by KH Neochem Co., Ltd., with 2-propylheptyl being the most preferred. Examples of branched dodecyl groups include 2-butyloctyl.

[0058] In general formula (b1), R 1 hydrocarbon group and R 2 The hydrocarbon groups can be the same or different. In R 1 hydrocarbon group and R 2 When the hydrocarbon groups are different, the preferred option is selected from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles. Additionally, regarding R... 1 hydrocarbon group and R 2 When the hydrocarbon groups are the same, the preferred option is selected from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, reduced wrinkles, and quality stability. For example, in general formula (b1), R 1 The number of carbon atoms and R 2 The number of carbon atoms can be the same or different. In R 1 The number of carbon atoms and R 2 When the number of carbon atoms varies, the preferred option is selected from the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles. Additionally, in R... 1 The number of carbon atoms and R 2 Given the same number of carbon atoms, the preferred option is selected from the perspectives of cleanliness, reduced inter-fiber friction when wet, improved softness, reduced wrinkles, and quality stability.

[0059] In general formula (b1), R 1 and R 2When the hydrocarbon group contains branches, 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 cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles. Moreover, from the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, it is preferably 0.01 or more, more preferably 0.02 or more, and even more preferably 0.04 or more.

[0060] Branch degree = [(R 1 and R 2 The total number of terminal methyl groups) - 2] / (R 1 and R 2 (Total number of carbon atoms)

[0061] Furthermore, branching degree can be used 1 The average value measured by H-NMR.

[0062] In general formula (b1), A 1 O, A 2 O represents an olefinic group with 2 to 4 carbon atoms. From the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, olefinic groups with 2 or 3 carbon atoms are preferred. In general formula (b1), x1 and x2 represent A 1 O, A 2 The average number of moles of O added is 0 to 10, and from the viewpoint of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, it is preferably 6 or less, more preferably 4 or less, even more preferably 2 or less, and even more preferably 0.

[0063] In general formula (b1), M is a cation. M is preferably a cation other than hydrogen ions. 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 triethanolamine ions, diethanolamine ions, monoethanolamine ions, trimethylammonium ions, and monomethylammonium ions.

[0064] From the viewpoints of cleanliness, reduced inter-fiber friction when wet, improved softness, and reduced wrinkles, M is preferably an alkali metal ion or an alkanol ammonium ion, more preferably a sodium ion, a potassium ion, a triethanolamine ion, a diethanolamine ion, or a monoethanolamine ion, and even more preferably a sodium ion.

[0065] In the fiber friction reducing agent of the present invention, from the viewpoint of reducing inter-fiber friction when wet, the content of component (a) 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. Furthermore, the content of component (a) in the present invention is based on the amount converted to potassium salt.

[0066] In the fiber friction reducing agent of the present invention, from the viewpoint of reducing inter-fiber friction when wet, the content of component (b) is preferably 1% by mass or more, more preferably 5% by mass or more, further preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, further preferably 40% by mass or less, further more preferably 30% by mass or less, and further more preferably 20% by mass or less. Furthermore, the content of component (b) in the present invention is based on the amount converted to sodium salt.

[0067] From the viewpoint of reducing inter-fiber friction when wet, in the fiber friction reducing agent of the present invention, the content of component (b) relative to the total content of component (a) and component (b) 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, more preferably 75% by mass or less. In the present invention, the ratio expressed in mass% is a value that expresses a specific ratio as a percentage (the same applies below).

[0068] The friction-reducing agent for fibers of the present invention may contain, for example, a pH adjuster, fragrance, antibacterial agent, bleaching agent, bleaching activator, defoamer, fragrance capsule, enzyme, polymer, silicone, etc., as any component other than component (a) and component (b). The friction-reducing agent for fibers of the present invention may be a composition containing component (a) and component (b).

[0069] Furthermore, from the viewpoint of reducing inter-fiber friction when wet, the fiber friction reducing agent of the present invention preferably contains a surfactant of component (x) and a solvent of component (c). Specific examples or preferred examples of components (x) and (c) are the same as those of the fiber cleaning agent composition of the present invention.

[0070] When the friction reducing agent for fibers of the present invention contains component (x), from the viewpoint of reducing inter-fiber friction when wet, the friction reducing agent contains component (x) preferably 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, even more preferably 40% by mass or less, even more preferably 30% by mass or less, even more preferably 20% by mass or less.

[0071] Furthermore, when the friction reducing agent for fibers of the present invention contains component (c), from the viewpoint of reducing inter-fiber friction when wet, the friction reducing agent contains component (c) preferably 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, even more preferably 50% by mass or less, and even more preferably 25% by mass or less.

[0072] The fiber friction reducing agent of the present invention can be applied to fibers, for example, in the form of a treatment liquid containing component (a), component (b), and water. This treatment liquid may further contain component (x) and component (c).

[0073] This invention discloses the use of a formulation as a friction reducer for fibers, the formulation containing component (a) and component (b), wherein the content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b). The matters described in the fiber friction reducer, the method for reducing inter-fiber friction, the fiber cleaning agent composition, and the method for treating fiber products of this invention can be suitably applied to the use of this invention. Specific examples or preferred embodiments of component (a) and component (b) in the use of this invention are also the same as those in the fiber friction reducer of this invention.

[0074] The method for reducing inter-fiber friction of the present invention is to bring component (a) and component (b) into contact with the fiber in an amount where the ratio of the amount of component (b) to the total amount of component (a) and component (b) is 20% by mass or more and less than 100% by mass.

[0075] The matters described in the fiber friction reducing agent, fiber cleaning agent composition, and fiber article treatment method of the present invention can be appropriately applied to the fiber friction reducing method of the present invention. Specific examples or preferred embodiments of components (a) and (b) in the fiber friction reducing method of the present invention are also the same as those in the fiber friction reducing agent of the present invention. The fiber friction reducing method of the present invention can be performed using the fiber friction reducing agent of the present invention.

[0076] In the method for reducing inter-fiber friction of the present invention, for example, a treatment liquid containing component (a), component (b), and water may be brought into contact with the fibers. This treatment liquid may further contain component (x) and component (c). Alternatively, the treatment liquid may be obtained by mixing the fibers of the present invention with a friction-reducing agent and water.

[0077] The fiber to which the method for reducing inter-fiber friction of the present invention is applied can be a fiber product such as clothing.

[0078] In the method for reducing inter-fiber friction of the present invention, for example, component (a) may be brought into contact with the fiber at a concentration of 0.001% owf or more, further 0.01% owf or more, and 10% owf or less, further 1% owf or less. Here, "% owf" is an abbreviation for "% on the weight of fabric," which refers to the percentage of the mass of a component (such as component (a)) relative to the mass of the fiber.

[0079] In addition, in the method for reducing inter-fiber friction of the present invention, for example, component (b) may be brought into contact with the fiber at a concentration of 0.0001% owf or more, further 0.001% owf or more, and 10% owf or less, further 1% owf or less.

[0080] The fiber friction reducing agent of the present invention can be used in a manner where (a) component and / or (b) component are in the range of %owf described above.

[0081] <Fiber Cleaning Composition>

[0082] The fiber cleaning agent composition of the present invention contains the above-mentioned component (a) and component (b), and the content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b).

[0083] The matters described in the fiber friction reducer, the method for reducing inter-fiber friction, and the method for treating fiber products of the present invention can be appropriately applied to the fiber cleaning agent composition of the present invention. Specific examples or preferred embodiments of components (a) and (b) in the fiber cleaning agent composition of the present invention are also the same as those in the fiber friction reducer, the method for reducing inter-fiber friction, and the method for treating fiber products of the present invention.

[0084] The fiber cleaning agent composition of the present invention may contain component (a) and component (b) as a friction reducer for fibers.

[0085] From the viewpoint of improving cleanliness, improving softness, and reducing wrinkles, the fiber cleaning agent composition of the present invention preferably contains 1% or more by mass of component (a), more preferably 3% or more by mass, even more preferably 5% or more by mass, even more preferably 10% or more by mass, even more preferably 15% or more by mass, and preferably 90% or less by mass, more preferably 80% or less by mass, even more preferably 50% or less by mass, even more preferably 40% or less by mass, even more preferably 30% or less by mass, and even more preferably 20% or less by mass.

[0086] From the viewpoint of improving cleanliness, improving softness, and reducing wrinkles, the fiber cleaning agent composition of the present invention preferably contains 1% or more by mass of component (b), more preferably 3% or more by mass, even more preferably 5% or more by mass, even more preferably 10% or more by mass, and preferably 80% or less by mass, more preferably 60% or less by mass, even more preferably 50% or less by mass, even more preferably 40% or less by mass, even more preferably 30% or less by mass, and even more preferably 20% or less by mass.

[0087] From the viewpoint of improved cleanliness, improved softness, and reduced wrinkles, in the fiber cleaning agent composition of the present invention, the content of component (b) relative to the total content of component (a) and component (b) 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, more preferably 75% by mass or less.

[0088] The fiber friction reducing agent and / or fiber cleaning agent composition of the present invention may contain surfactants other than components (a) and (b) [hereinafter referred to as component (x)].

[0089] As component (x), one or more surfactants selected from anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants, other than components (a) and (b), may be listed.

[0090] From the viewpoint of improved formulation, cleanliness, softness, and wrinkle reduction, the anionic surfactant other than component (a) and component (b) is preferably one or more compounds selected from the following general formula (x1-1) [hereinafter referred to as component (x1-1)], the following general formula (x1-2) [hereinafter referred to as component (x1-2)], and the following general formula (x1-3) [hereinafter referred to as component (x1-3)].

[0091] R 1x -O-[(PO)m1 (EO) n1 ]-SO3M 1x (x1-1)

[0092] (In formula (x1-1), R) 1x This indicates an alkyl group with 8 to 22 carbon atoms. The carbon atom bonded to the oxygen atom is a primary carbon atom. PO represents an propylene oxide group, and EO represents an ethylene oxide group. EO and PO are either block or random bonds. The bonding order of PO and EO is not limited. m1 and n1 are the average molar number of additions. m1 is 0 to 5 and n1 is 0 to 16, and M... 1x This indicates a hydrogen atom, alkali metal, alkaline earth metal (1 / 2 atom), ammonium, or organic ammonium.

[0093] R 2x -B-SO3M 2x (x1-2)

[0094] (In formula (x1-2), R) 2x This indicates an alkyl group with 9 to 21 carbon atoms, where B represents a benzene ring, and R is bonded to the carbon atom of B. 2x The carbon atom is a secondary carbon atom, M 2x Represents a hydrogen atom, alkali metal, alkaline earth metal (1 / 2 atom), ammonium, or organic ammonium, with the sulfonic acid group relative to the R bonded to B. 2x (Bonding to adjacent, intermediate, or opposite positions.)

[0095] R 3x -CH(SO3M 3x COOR 4x (x1-3)

[0096] (In formula (x1-3), R) 3x R indicates an alkyl group with 6 to 20 carbon atoms. 4x M represents an alkyl group with 1 to 6 carbon atoms. 3x This represents a hydrogen atom, an alkali metal, an alkaline earth metal (half an atom), ammonium, or an organic ammonium.

[0097] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-1), R 1x Preferably, it is an alkyl group with 9 or more carbon atoms, more preferably 10 or more, even more preferably 12 or more, and preferably 18 or less, more preferably 16 or less, and even more preferably 14 or less. 1 Preferably, it is a straight-chain alkyl group.

[0098] From the viewpoint of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-1), m1 is preferably 4 or less, more preferably 3 or less, and even more preferably 2 or less.

[0099] From the viewpoint of improved formulation or cleanliness, improved softness, and reduced wrinkles, in general formula (x1-1), n1 is preferably 0.5 or more, more preferably 1 or more, even more preferably 2 or more, preferably 10 or less, more preferably 5 or less, and even more preferably 4 or less.

[0100] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-1), M 1x Preferably, it contains hydrogen atoms; alkali metals such as sodium and potassium; alkaline earth metals such as magnesium and calcium (1 / 2 atom); or organic ammonium salts. Organic ammonium salts can be salts formed using amines employed in pH adjusters. M 1x More preferably, it is an alkali metal such as sodium or potassium; or an alkanol ammonium such as monoethanolammonium or diethanolammonium, and even more preferably, sodium.

[0101] From the viewpoint of improved formulation, cleanliness, softness, and wrinkle reduction, the preferred component (x1-1) is a sodium salt of polyoxyalkylene alkyl ether sulfate with 12 to 14 carbon atoms in the alkyl group, an average molar number of additions of the propylene oxy group of 0 to 4, and an average molar number of additions of the ethylene oxy group of 1 to 4. That is, the preferred component (x1-1) is R in the general formula (x1-1). 1x Alkyl groups with 12 to 14 carbon atoms, m1 with 0 to 4 atoms, n1 with 1 to 4 atoms, and M 1x It is a sodium compound.

[0102] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-2), R 2x It is an alkyl group having 9 or more carbon atoms, preferably 10 or more, more preferably 11 or more, and preferably 18 or less, more preferably 16 or less, and even more preferably 14 or less.

[0103] In the general formula (x1-2), M 2x Preferably, it contains hydrogen atoms; alkali metals such as sodium and potassium; alkaline earth metals such as magnesium and calcium (1 / 2 atom); or organic ammonium salts. Organic ammonium salts can be salts formed using amines employed in pH adjusters. M 2x More preferably, it is an alkali metal such as sodium or potassium; or an alkanol ammonium such as monoethanolammonium or diethanolammonium, and even more preferably, sodium.

[0104] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-3), R 3x The alkyl group preferably has 8 or more carbon atoms, more preferably 10 or more, and more preferably 18 or less, more preferably 16 or less.

[0105] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-3), R 4x The alkyl group preferably has 1 or more carbon atoms, and more preferably 5 or less, and more preferably 4 or less.

[0106] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x1-3), M 3x Preferably, it contains hydrogen atoms; alkali metals such as sodium and potassium; alkaline earth metals such as magnesium and calcium (1 / 2 atom); or organic ammonium salts. Organic ammonium salts can be salts formed using amines employed in pH adjusters. M 3x More preferably, it is an alkali metal such as sodium or potassium; or an alkanol ammonium such as monoethanolammonium or diethanolammonium, and even more preferably, sodium.

[0107] As nonionic surfactants, from the perspective of formulation or improved cleanliness, improved softness, and reduced wrinkles, the following general formula (x2) can be used to represent nonionic surfactants.

[0108] R 5x (CO) m2 O-(AO) n2 -R 6x (x2)

[0109] [In the formula, R] 5x For aliphatic hydrocarbon groups with 9 to 18 carbon atoms, R 6x [The group is a hydrogen atom or a methyl group, CO is a carbonyl group, m2 is a number of 0 or 1, AO group is one or more groups selected from ethyleneoxy and propenoxy groups, n2 is the average molar number of additions, and is a number between 1 and 70.]

[0110] In the general formula (x2), R 5x It consists of aliphatic hydrocarbon groups with 9 to 18 carbon atoms. From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, R... 5x The carbon number is 9 or more, preferably 10 or more, more preferably 12 or more, and is 18 or less, preferably 16 or less, more preferably 14 or less.

[0111] As R 5x The aliphatic hydrocarbon group is preferably a group selected from alkyl and alkenyl groups.

[0112] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, m2 in the general formula (x2) is preferably 0.

[0113] From the perspective of improved formulation, cleanliness, softness, and wrinkle reduction, in general formula (x2), R 6x Hydrogen atoms are preferred.

[0114] In general formula (x2), the AO group is one or more groups selected from ethyleneoxy and propyleneoxy groups. When ethyleneoxy and propyleneoxy groups are included, the ethyleneoxy and propyleneoxy groups can be block-bonded or random-bonded. From the viewpoint of not hindering the softening effect of the fibers obtained using 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 limited.

[0115] 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 improving formulation or cleanliness, softness, wrinkle reduction, and stable combination of component (a) and component (b), n2 is 1 or more, preferably 5 or more, more preferably 10 or more, and is 70 or less, preferably 60 or less, more preferably 50 or less, further preferably 40 or less, further more preferably 30 or less, and further more preferably 25 or less.

[0116] From the viewpoint of improved formulation or cleanliness, improved softness, and reduced wrinkles, the compound preferred as the nonionic surfactant of the present invention is a polyoxyethylene (polyoxypropylene) alkyl ether with the following: the average degree of polymerization (or sometimes referred to as the average molar number of addition) of the ethylene group (hereinafter sometimes referred to as the 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; the average degree of polymerization (or sometimes referred to as the PO group) of the propylene group (hereinafter sometimes referred to as the PO group) is 0 or more, 5 or less, preferably 4 or less; and the EO group and the PO group are block-bonded or random-bonded, preferably block-bonded. From the viewpoint of improved formulation or cleanliness, improved softness, reduced wrinkles, and stability, it is more preferred that the compound is, relative to the alkyl ether (e.g., R in general formula (x2)). 5x -O) is a block bond in the order of EOPOEO or POEO, and the alkyl group is derived from a straight-chain primary or secondary alcohol with 12 to 18 carbon atoms, more preferably 12 or 14, and even more preferably 12.

[0117] Examples of cationic surfactants include cationic surfactants that are tertiary amine salts and cationic surfactants that are quaternary ammonium salts.

[0118] Examples of amphoteric surfactants include betaine-type amphoteric surfactants and amine oxide-type amphoteric surfactants.

[0119] (x) is preferably one or more surfactants selected from anionic surfactants other than (a) and (b) and nonionic surfactants.

[0120] When the fiber cleaning agent composition of the present invention contains component (x), from the viewpoint of improving cleanliness, improving softness and reducing wrinkles, the composition preferably contains 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, even more preferably 25% by mass or less, and even more preferably 15% by mass or less.

[0121] From the viewpoint of improved cleanliness, improved softness, and reduced wrinkles, in the fiber cleaning agent composition of the present invention, the ratio of the total amount of component (a) and component (b) to the total amount of surfactant is preferably 10% by mass or more, more preferably 20% by mass or more, further preferably 30% by mass or more, further more preferably 40% by mass or more, and preferably 100% by mass or less, more preferably 90% by mass or less, further preferably 80% by mass or less, further more preferably 70% by mass or less, further more preferably 60% by mass or less, and further more preferably 50% by mass or less. The total amount of surfactant can be the combined content of component (a), component (b), and component (x) in the composition. The fiber cleaning agent composition of the present invention can be a composition containing surfactant, which contains component (a) and component (b) as surfactants in the above-mentioned specific ratio, and the ratio of the total content of component (a) and component (b) to the content of surfactant is within the above-mentioned range.

[0122] From the viewpoint of improved cleanliness, improved softness, and reduced wrinkles, the fiber friction reducing agent and / or fiber cleaning agent composition of the present invention preferably further contains the following component (c) from the viewpoint of formulation or improved cleanliness, improved softness, and reduced wrinkles.

[0123] (c) Ingredients: Solvents containing hydroxyl groups

[0124] As component (c), it is preferably one or more organic solvents selected from components (c1) to (c4) below.

[0125] (c1) Composition: Monohydric alcohol with 2 to 6 carbon atoms;

[0126] (c2) Composition: Alcohols with 2 to 12 carbon atoms and more than two to twelve carbon atoms;

[0127] (c3) Ingredients: Organic solvents having 1 to 8 carbon atoms (excluding partially substituted aromatic groups), ether groups and hydroxyl groups;

[0128] (c4) Ingredients: Organic solvents containing partially substituted aromatic groups, ether groups and hydroxyl groups.

[0129] Examples of (c1) components include, for example, ethanol, 1-propanol, 2-propanol, and phenol.

[0130] As (c2) ingredients, examples include ethylene glycol, propylene glycol, butylene glycol, hexanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, and glycerin.

[0131] As components (c3), examples include, for instance, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (also known as diethylene glycol butyl ether), dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, 1-methylglycerol ether, 2-methylglycerol ether, 1,3-dimethylglycerol ether, 1-ethylglycerol ether, 1,3-diethylglycerol ether, 1-pentylglycerol ether, 2-pentylglycerol ether, 1-octylglycerol ether, and 2-ethylhexylglycerol ether.

[0132] As (c4) components, examples include 2-phenoxyethanol (also known as phenylethylene glycol), diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, polyethylene glycol monophenyl ether with an average molecular weight of about 480, 2-benzyloxyethanol, and diethylene glycol monobenzyl ether.

[0133] From the viewpoint of improved formulation, cleanliness, softness, and wrinkle reduction, component (c) is preferably an organic solvent with hydroxyl groups selected from one or more of the above-mentioned components (c2), (c3), and (c4).

[0134] When the fiber cleaning agent composition of the present invention contains component (c), from the viewpoint of improving formulation or cleaning properties, improving softness, and reducing wrinkles, the composition preferably contains 0.1% by mass or more, more preferably 1% by mass or more, further preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, and further preferably 25% by mass or less.

[0135] The fiber cleaning agent composition of the present invention may contain, for example, a pH adjuster, fragrance, antibacterial agent, bleaching agent, bleaching activator, defoamer, fragrance capsule, enzyme, polymer, silicone, etc., as further optional ingredients. As a pH adjuster, for example, an alkaline agent such as monoethanolamine or an acidic agent such as citric acid can be used.

[0136] The fiber cleaning agent composition of the present invention preferably contains water and can be a liquid composition containing water. The water is preferably moderately purified water free of impurities. Well water and industrial water can also be used. The water is preferably tap water or purified water, such as ion-exchanged water. The fiber cleaning agent composition of the present invention preferably contains 50% by mass or more, more preferably 60% by mass or more, further preferably 70% by mass or more, and preferably 95% by mass or less, more preferably 90% by mass or less, and more preferably 85% by mass or less. The water content is the remainder of the total content of component (a), component (b), and any other component. The fiber friction reducing agent of the present invention may also contain water.

[0137] The pH of the fiber friction reducing agent and fiber cleaning agent composition of the present invention, as measured by the following method, at 25°C, is preferably 4 or more, more preferably 5 or more, and preferably 12 or less, more preferably 11 or less.

[0138] [Methods for pH measurement]

[0139] A pH measuring composite electrode (manufactured by HORIBA, glass sliding type) was connected to a pH meter (manufactured by HORIBA, pH / ion meter F-23) and powered on. A saturated potassium chloride aqueous solution (3.33 mol / L) was used as the internal solution for the pH electrode. Next, standard solutions of pH 4.01 (phthalate), pH 6.86 (neutral phosphate), and pH 9.18 (borate) were filled into 100 mL beakers and immersed in a constant temperature bath at 25°C for 30 minutes. The pH measuring electrode was then immersed in the standard solutions adjusted to a constant temperature for 3 minutes, and calibration was performed in the order of pH 6.86 → pH 9.18 → pH 4.01. The sample to be measured (a fiber friction reducer or a fiber cleaning agent composition) was adjusted to 25°C, and the pH of the pH meter was measured after 1 minute by immersing the electrode in the sample.

[0140] <Processing Methods for Fiber Products>

[0141] The cleaning method for fiber products of the present invention is to clean the fiber products by mixing (a), (b) and water to obtain a cleaning liquid, and then rinsing the fiber products with water, wherein the content of (b) in the cleaning liquid is 20% by mass or more and less than 100% by mass relative to the total content of (a) and (b) in the cleaning liquid.

[0142] The matters described in the fiber friction reducing agent, the method for reducing inter-fiber friction, and the fiber cleaning agent composition of the present invention can be appropriately applied to the fiber article treatment method of the present invention. Specific examples or preferred embodiments of components (a) and (b) in the fiber article treatment method of the present invention are also the same as those in the fiber friction reducing agent of the present invention. The fiber article treatment method of the present invention can be performed using the fiber friction reducing agent or the fiber cleaning agent composition of the present invention. Furthermore, the cleaning liquid described above may also have the pH described in the fiber cleaning agent composition of the present invention. Additionally, the cleaning liquid may also contain components (x) and (c). The cleaning and rinsing of the fiber articles can be performed according to known methods.

[0143] From the viewpoint of improved cleanliness, improved softness, and reduced wrinkles, the concentration of component (a) in the above-mentioned cleaning liquid 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. The above-mentioned cleaning liquid is preferably prepared by diluting the fiber-cleaning agent composition of the present invention with water in such a way that the content of component (a) is within this range. As a specific dilution ratio, from the viewpoint of cleanliness and final finish (softness, wrinkle reduction), it is preferably 500 times or more, more preferably 800 times or more, more preferably 5000 times or less, and more preferably 3000 times or less.

[0144] In the processing method of the fiber article of the present invention, for example, component (a) may be brought into contact with the fiber at a concentration of 0.001% owf or more, further 0.01% owf or more, and 10% owf or less, further 1% owf or less. Here, "% owf" is an abbreviation for "% on the weight of fabric," which refers to the percentage of the mass of a component (such as component (a)) relative to the mass of the fiber.

[0145] In addition, in the processing method of the fiber article of the present invention, for example, component (b) may be brought into contact with the fiber at a concentration of 0.0001% owf or more, further 0.001% owf or more, and 10% owf or less, further 1% owf or less.

[0146] The fiber product processing method of the present invention can be implemented, for example, using a household washing machine or a commercial washing machine. The conditions can be the usual temperature, time, liquor ratio, etc. In the case of the fiber product processing method of the present invention, the friction between the wet fibers can be reduced. Therefore, the fiber product is easier to remove after washing. Furthermore, washing damage to the fiber product is reduced, and wrinkles in the fiber product are reduced at the end of the washing process.

[0147] In addition to the embodiments described above, the present invention discloses the following embodiments.

[0148] <1> A friction reducing agent for fibers, comprising component (a) and component (b), wherein the content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b).

[0149] (a) Composition: Internal olefin sulfonates with 17 to 24 carbon atoms;

[0150] (b) Ingredients: sulfosuccinates or their salts having a hydrocarbon group having 5 to 18 carbon atoms.

[0151] <2> The friction reducing agent for fibers as described in <1>, wherein the carbon number of component (a) is preferably 18 or more, and preferably 22 or less, more preferably 20 or less.

[0152] <3> The friction reducing agent for fibers as described in <1> or <2>, wherein component (b) is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a number of 5 to 18 carbon atoms.

[0153] <4> The friction reducing agent for fibers as described in any one of <1> to <3>, wherein (b) component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a carbon number of 5 to 18 or more, and the total carbon number of the two hydrocarbon groups being 20 or more.

[0154] <5> The friction reducing agent for fibers as described in <1> or <2>, wherein component (b) is a compound represented by the following general formula (b1).

[0155]

[0156] [In the formula, R] 1 R 2 These are hydrocarbon groups with 5 to 18 carbon atoms, preferably branched hydrocarbon groups with 5 to 18 carbon atoms. 1 O, A 2 O represents an olefinic oxygen group with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of addition reactions, and are numbers between 0 and 10, respectively. M represents a cation.

[0157] <6> The friction reducing agent for fibers as described in <5>, wherein, in general formula (b1), R 1 R 2 The hydrocarbon group is alkyl or alkenyl.

[0158] <7> Friction reducing agent for fibers as described in <5> or <6>, wherein, in general formula (b1), R1 R 2 The hydrocarbon group preferably has 6 or more carbon atoms, more preferably 8 or more, even more preferably 10 or more, and preferably 15 or less, more preferably 12 or less.

[0159] <8> The friction-reducing agent for fibers as described in any one of <5> to <7>, wherein, in general formula (b1), R 1 R 2 The side chains of the branched hydrocarbon groups preferably have 2 or more carbon atoms, more preferably 3 or more, and more preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less.

[0160] In general formula (b1), R 1 R 2 Preferably, it is a branched alkyl group with 8 to 12 carbon atoms, more preferably a branched alkyl group with 10 to 12 carbon atoms, and even more preferably a branched alkyl group with 10 carbon atoms.

[0161] <9> The friction-reducing agent for fibers as described in any one of <5> to <8>, wherein, in general formula (b1), R 1 R 2 The groups are preferably selected from 2-ethylhexyl and 2-propylheptyl, and more preferably 2-propylheptyl.

[0162] <10> A friction-reducing agent for fibers as described in any one of <5> to <9>, wherein, in general formula (b1), A 1 O, A 2 O represents an olefinic group having 2 to 4 carbon atoms, preferably 2 or 3 carbon atoms.

[0163] In the general formula (b1), x1 and x2 represent A. 1 O, A 2 The average number of moles of O added is 0 to 10, preferably 6 or less, more preferably 4 or less, and even more preferably 2 or less, and even more preferably 0.

[0164] <11> The friction reducing agent for fibers as described in any one of <5> to <10>, wherein, in general formula (b1), M is preferably an alkali metal ion, an alkanol ammonium ion, more preferably a sodium ion, a potassium ion, a triethanolamine ion, a diethanolamine ion, a monoethanolamine ion, and even more preferably a sodium ion.

[0165] <12> The friction reducing agent for fibers as described in any one of <1> to <11>, wherein the content of component (a) 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, even 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.

[0166] <13> The friction reducing agent for fibers as described in any one of <1> to <12>, wherein the content of component (b) 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, even more preferably 20% by mass or less.

[0167] <14> The friction reducing agent for fibers as described in any one of <1> to <13>, wherein 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.

[0168] <15> A method for reducing inter-fiber friction, wherein the following components (a) and (b) are brought into contact with the fiber in an amount where the ratio of component (b) to the total amount of component (a) and (b) is 20% by mass or more and less than 100% by mass.

[0169] (a) Composition: Internal olefin sulfonates with 17 to 24 carbon atoms;

[0170] (b) Ingredients: sulfosuccinates or their salts having a hydrocarbon group having 5 to 18 carbon atoms.

[0171] <16> The method for reducing inter-fiber friction as described in <15>, wherein the carbon number of component (a) is preferably 18 or more, and preferably 22 or less, more preferably 20 or less.

[0172] <17> The method for reducing interfiber friction as described in <15> or <16>, wherein (b) component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a carbon number of 5 to 18 and a total carbon number of 20 or more for the two hydrocarbon groups.

[0173] <18> The method for reducing interfiber friction as described in <15> or <16>, wherein (b) component is a compound represented by the following general formula (b1).

[0174]

[0175] [In the formula, R] 1 R 2 These are hydrocarbon groups with 5 to 18 carbon atoms, preferably branched hydrocarbon groups with 5 to 18 carbon atoms. 1 O, A 2 O represents an olefinic oxygen group with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of addition reactions, and are numbers between 0 and 10, respectively. M represents a cation.

[0176] <19> A method for reducing interfiber friction as described in <18>, wherein, in general formula (b1), R 1 R 2 The side chains of the branched hydrocarbon groups preferably have 2 or more carbon atoms, more preferably 3 or more, and more preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less.

[0177] In general formula (b1), R 1 R 2 Preferably, it is a branched alkyl group with 8 to 12 carbon atoms, more preferably a branched alkyl group with 10 to 12 carbon atoms, and even more preferably a branched alkyl group with 10 carbon atoms.

[0178] <20> A method for reducing interfiber friction as described in <18> or <19>, wherein, in general formula (b1), R 1 R 2 The groups are preferably selected from 2-ethylhexyl and 2-propylheptyl, and more preferably 2-propylheptyl.

[0179] <21> The method for reducing interfiber friction as described in any one of <18> to <21>, wherein 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.

[0180] <22> A detergent composition for fibers, comprising component (a) and component (b), wherein the content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b).

[0181] (a) Composition: Internal olefin sulfonates with 17 to 24 carbon atoms;

[0182] (b) Ingredients: sulfosuccinates or their salts having a hydrocarbon group having 5 to 18 carbon atoms.

[0183] <23> The fiber cleaning agent composition as described in <22>, wherein the carbon number of component (a) is preferably 18 or more, and preferably 22 or less, more preferably 20 or less.

[0184] <24> A cleaning agent composition for fibers as described in <22> or <23>, wherein (b) component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a carbon number of 5 to 18.

[0185] <25> A cleaning agent composition for fibers as described in any one of <22> to <24>, wherein (b) component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a carbon number of 5 to 18 or more, and the total carbon number of the two hydrocarbon groups being 20 or more.

[0186] <26> A fiber cleaning composition as described in <22> or <23>, wherein component (b) is a compound represented by the following general formula (b1).

[0187]

[0188] [In the formula, R] 1 R 2 These are hydrocarbon groups with 5 to 18 carbon atoms, preferably branched hydrocarbon groups with 5 to 18 carbon atoms. 1 O, A 2 O represents an olefinic oxygen group with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of addition reactions, and are numbers between 0 and 10, respectively. M represents a cation.

[0189] <27> The fiber cleaning agent composition as described in <26>, wherein, in general formula (b1), R 1 R 2 The hydrocarbon group is alkyl or alkenyl.

[0190] <28> The fiber cleaning agent composition as described in <26> or <27>, wherein, in general formula (b1), R 1 R 2 The hydrocarbon group preferably has 6 or more carbon atoms, more preferably 8 or more, even more preferably 10 or more, and preferably 15 or less, more preferably 12 or less.

[0191] <29> The fiber cleaning composition as described in any one of <26> to <28>, wherein, in general formula (b1), R 1 R 2 The side chains of the branched hydrocarbon groups preferably have 2 or more carbon atoms, more preferably 3 or more, and more preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less.

[0192] In general formula (b1), R 1 R 2 Preferably, it is a branched alkyl group with 8 to 12 carbon atoms, more preferably a branched alkyl group with 10 to 12 carbon atoms, and even more preferably a branched alkyl group with 10 carbon atoms.

[0193] <30> A detergent composition for fibers as described in any one of <26> to <29>, wherein, in general formula (b1), R 1 R 2 The groups are preferably selected from 2-ethylhexyl and 2-propylheptyl, and more preferably 2-propylheptyl.

[0194] <31> A detergent composition for fibers as described in any one of <26> to <30>, wherein, in general formula (b1), A 1 O, A 2 O represents an olefinic group having 2 to 4 carbon atoms, preferably 2 or 3 carbon atoms.

[0195] In the general formula (b1), x1 and x2 represent A. 1 O, A 2 The average number of moles of O added is 0 to 10, preferably 6 or less, more preferably 4 or less, and even more preferably 2 or less, and even more preferably 0.

[0196] <32> The fiber cleaning agent composition as described in any one of <26> to <31>, wherein, in general formula (b1), M is preferably an alkali metal ion, an alkanol ammonium ion, more preferably a sodium ion, a potassium ion, a triethanolamine ion, a diethanolamine ion, a monoethanolamine ion, and even more preferably a sodium ion.

[0197] <33> The fiber cleaning agent composition as described in any one of <22> to <32>, wherein the content of component (a) 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, even 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.

[0198] <34> The fiber cleaning agent composition as described in any one of <22> to <33>, wherein the content of component (b) 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, even more preferably 20% by mass or less.

[0199] <35> The fiber cleaning agent composition as described in any one of <22> to <34>, wherein 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.

[0200] <36> The fiber cleaning composition as described in any one of <22> to <35>, further comprising the following component (c):

[0201] (c) Ingredients: Solvents containing hydroxyl groups.

[0202] <37> The fiber cleaning agent composition as described in <36>, wherein component (c) is one or more organic solvents selected from components (c1) to (c4) below.

[0203] (c1) Composition: Monohydric alcohol with 2 to 6 carbon atoms;

[0204] (c2) Composition: Alcohols with 2 to 12 carbon atoms and more than two to twelve carbon atoms;

[0205] (c3) Ingredients: Organic solvents having 1 to 8 carbon atoms (excluding partially substituted aromatic groups), ether groups and hydroxyl groups;

[0206] (c4) Ingredients: Organic solvents containing partially substituted aromatic groups, ether groups and hydroxyl groups.

[0207] <38> The fiber cleaning agent composition as described in <36> or <37>, wherein the content of component (c) 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.

[0208] <39> A method for treating a fiber product, wherein the fiber product is cleaned with a cleaning solution obtained by mixing component (a), component (b), and water, and then the fiber product is rinsed with water, wherein the ratio of the content of component (b) in the cleaning solution to the total content of component (a) and component (b) in the cleaning solution is 20% by mass or more and less than 100% by mass.

[0209] (a) Composition: Internal olefin sulfonates with 17 to 24 carbon atoms;

[0210] (b) Ingredients: sulfosuccinates or their salts having a hydrocarbon group having 5 to 18 carbon atoms.

[0211] <40> The method for processing fiber products as described in <39>, wherein the carbon number of component (a) is preferably 18 or more, and preferably 22 or less, more preferably 20 or less.

[0212] <41> A method for processing fiber products as described in <39> or <40>, wherein (b) component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a carbon number of 5 to 18 and a total carbon number of 20 or more for the two hydrocarbon groups.

[0213] <42> The method of processing fiber articles as described in <39> or <40>, wherein (b) component is a compound represented by the following general formula (b1).

[0214]

[0215] [In the formula, R] 1 R 2 These are hydrocarbon groups with 5 to 18 carbon atoms, preferably branched hydrocarbon groups with 5 to 18 carbon atoms. 1 O, A 2 O represents an olefinic oxygen group with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of addition reactions, and are numbers between 0 and 10, respectively. M represents a cation.

[0216] <43> A method for processing fiber products as described in <42>, wherein, in general formula (b1), R 1 R 2 The side chains of the branched hydrocarbon groups preferably have 2 or more carbon atoms, more preferably 3 or more, and more preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less.

[0217] In general formula (b1), R 1 R 2 Preferably, it is a branched alkyl group with 8 to 12 carbon atoms, more preferably a branched alkyl group with 10 to 12 carbon atoms, and even more preferably a branched alkyl group with 10 carbon atoms.

[0218] <44> A method for reducing interfiber friction as described in <42> or <43>, wherein, in general formula (b1), R 1 R 2 The groups are preferably selected from 2-ethylhexyl and 2-propylheptyl, and more preferably 2-propylheptyl.

[0219] <45> A method for treating a fiber article as described in any one of <39> to <44>, wherein, in the cleaning liquid, 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.

[0220] <46> A method for treating fiber articles as described in any one of <39> to <45>, wherein the cleaning solution further contains the following component (c):

[0221] (c) Ingredients: Solvents containing hydroxyl groups.

[0222] <47> The method for processing fiber products as described in <46>, wherein component (c) is one or more organic solvents selected from components (c1) to (c4) below.

[0223] (c1) Composition: Monohydric alcohol with 2 to 6 carbon atoms;

[0224] (c2) Composition: Alcohols with 2 to 12 carbon atoms and more than two to twelve carbon atoms;

[0225] (c3) Ingredients: Organic solvents having 1 to 8 carbon atoms (excluding partially substituted aromatic groups), ether groups and hydroxyl groups;

[0226] (c4) Ingredients: Organic solvents containing partially substituted aromatic groups, ether groups and hydroxyl groups.

[0227] <48> A method for treating fiber articles as described in any one of <39> to <47>, wherein the concentration of component (a) in the cleaning liquid 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.

[0228] <49> Use of a formulation as a friction reducer for fibers, wherein the formulation contains component (a) and component (b), and the content of component (b) is 20% by mass or more and less than 100% by mass relative to the total content of component (a) and component (b).

[0229] (a) Composition: Internal olefin sulfonates with 17 to 24 carbon atoms;

[0230] (b) Ingredients: sulfosuccinates or their salts having a hydrocarbon group having 5 to 18 carbon atoms.

[0231] <50> As described in <49>, wherein the number of carbon atoms in component (a) is preferably 18 or more, and preferably 22 or less, more preferably 20 or less.

[0232] <51> The use as described in <49> or <50>, wherein (b) component is a sulfosuccinate diester or a salt thereof having two branched hydrocarbon groups having a carbon number of 5 to 18 and a total carbon number of 20 or more for the two hydrocarbon groups.

[0233] <52> The use as described in any one of <49> or <50>, wherein (b) component is a compound represented by the following general formula (b1).

[0234]

[0235] [In the formula, R] 1 R 2 These are hydrocarbon groups with 5 to 18 carbon atoms, preferably branched hydrocarbon groups with 5 to 18 carbon atoms. 1 O, A 2 O represents an olefinic oxygen group with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of addition reactions, and are numbers between 0 and 10, respectively. M represents a cation.

[0236] <53> As described in <52>, wherein, in general formula (b1), R 1 R 2 The groups are preferably selected from 2-ethylhexyl and 2-propylheptyl, and more preferably 2-propylheptyl.

[0237] Example

[0238] The following shows the ingredients used in the examples and comparative examples.

[0239] (a)Ingredients

[0240] • C18IOS: Potassium sulfonate of an internal olefin with 18 carbon atoms. The mass ratio of the olefin body (potassium olefin sulfonate) to the hydroxyl body (potassium hydroxyalkane sulfonate) in this C18IOS is 16 / 84. The mass ratio of the sulfonic acid group positions of the HAS body in this C18IOS is as follows: 1 / 2 / 3 / 4 / 5 / 6-9 = 1.5 / 22.1 / 17.2 / 21.8 / 13.5 / 23.9. Additionally, (IO⁻¹S) / (IO⁻²S) = 1.6 (mass ratio).

[0241] Furthermore, the positional distribution of sulfonic acid groups in the HAS body contained in this C18IOS was determined by liquid chromatography-mass spectrometry (hereinafter referred to as LC-MS). Additionally, sulfonates of internal alkenes with double bonds at positions 6 and above could not be clearly distinguished due to peak overlap. The apparatus and analytical conditions used for the determination are shown below.

[0242] [Measuring machine]

[0243] LC device: "LC-20ASXR" (manufactured by Shimadzu Corporation)

[0244] LC-MS device: "LCMS-2020" (manufactured by Shimadzu Corporation)

[0245] Column: ODS Hypersil (Length: 250 mm, Inner Diameter: 4.6 mm, Particle Size: 3 μm, manufactured by Thermo Fisher Scientific Inc.)

[0246] Detector: ESI(-), m / z = 349.15 (C18), 321.10 (C16), 293.05 (C14)

[0247] [solvent]

[0248] Solvent A: 10mM ammonium acetate aqueous solution

[0249] Solvent B: An acetonitrile / water solution with 10 mM ammonium acetate added, resulting in a 95 / 5 ratio.

[0250] [Elution conditions]

[0251] Gradient: Solvent A 60% Solvent B 40% (0–15 min) → Solvent A 30% Solvent B 70% (15.1–20 min) → Solvent A 60% Solvent B 40% (20.1–30 min)

[0252] Flow rate: 0.5 ml / min

[0253] Column temperature: 40℃

[0254] Injection volume: 5μl

[0255] (b) Components

[0256] Sodium di-2-ethylhexyl sulfosuccinate

[0257] Sodium bis-2-propylheptylsulfosuccinate

[0258] (x) Component (other surfactants)

[0259] • APES: Sodium salt of (polyoxypropylene) polyoxyethylene lauryl ether sulfate with an average addition molar number of 2 moles of propylene oxide and an average addition molar number of 2 moles of ethylene oxide.

[0260] • LAS: Sodium alkylbenzene sulfonate (alkyl composition: C10 / C11 / C12 / C13 = 11 / 29 / 34 / 26 (mass ratio), mass average number of carbon atoms = 17.75)

[0261] • AES: Sodium polyoxyalkylene ether sulfate (Emal 20C, manufactured by Kao Corporation)

[0262] Lauric acid: Lunac L-98, manufactured by Kao Corporation

[0263] • C16IOS: Potassium sulfonate of an internal olefin with 16 carbon atoms obtained in the manufacturing examples below

[0264] <C16IOS Manufacturing Example>

[0265] 7000 g (28.9 mol) of 1-hexadecaneol (product name: Kalcol 6098, manufactured by Kao Corporation) and 700 g (10% by mass relative to the starting alcohol) of γ-alumina (STREM Chemicals, Inc.) as a solid acid catalyst were added to a flask equipped with a stirrer. While stirring, nitrogen gas was introduced into the system at 280 °C (7000 mL / min) and the reaction was carried out for a certain period of time to convert it into the target internal olefin. The obtained crude internal olefin was transferred to a distillation flask and distilled at 136-160 °C / 4.0 mmHg to obtain a 100% pure 16-carbon internal olefin.

[0266] For the obtained internal olefin, a thin-film sulfonation reactor with an external jacket was used. Cooling water at 20°C was introduced into the external jacket of the reactor to allow the internal olefin to undergo a sulfonation reaction with sulfur trioxide gas. The molar ratio of SO3 to internal olefin during the sulfonation reaction was set to 1.09. The obtained sulfonate was added to an alkaline aqueous solution prepared using potassium hydroxide in an amount 1.5 molar times the theoretical acid value, and neutralized at 30°C for 1 hour with stirring. The neutralized product was heated at 160°C for 1 hour in an autoclave to hydrolyze it, thereby obtaining a potassium sulfonate product with 16 carbon atoms. The composition was evaporated to dryness, thereby obtaining potassium sulfonate with 16 carbon atoms. The content ratio (mass%) of this C16 IOS is 1 / 2 / 3 / 4 / 5-8 = 0.7 / 32.1 / 24.2 / 25.8 / 17.2. (IO-1S) / (IO-2S) = 4.8.

[0267] • C12 / 14EO9PO2EO9: Polyoxyethylene-polyoxypropylene-polyoxyethylene mixed alkyl ether (which is a compound in which polyoxyethylene, polyoxypropylene, and polyoxyethylene groups are sequentially bonded to a mixed alkyl group of 12 carbon atoms and 14 carbon atoms (7 / 3, by mass ratio), with an average addition molar number of oxyethylene of 9 moles and 9 moles of oxypropylene group, and an average addition molar number of oxypropylene group of 2 moles)

[0268] • C12 / 14EO10: Polyoxyethylene mixed alkyl ether (a compound in which the mixed alkyl group is a mixture of 12-carbon alkyl group and 14-carbon alkyl group (7 / 3 by mass), and the average molar number of oxyethylene addition is 10 moles)

[0269] <Example 1 and Comparative Example 1>

[0270] The friction-reducing agent for fibers with the composition shown in Table 1 was prepared, and its effect on reducing inter-fiber friction was evaluated using the following method. The results are shown in Table 1.

[0271] [Interfiber friction (kinetic friction when wet)]

[0272] (1) Fiber pretreatment

[0273] (1-1) Pretreatment of garment adjustment fabric

[0274] Beforehand, approximately 1.6 kg of commercially available intimate apparel (GUNZE Ltd.'s YG intimate apparel, 100% cotton, size L) was repeatedly washed five times in a fully automatic Panasonic NA-F70PB1 washing machine using a nonionic surfactant (4.5 g of nonionic surfactant, standard cycle, 45 L of water, 25 °C, 12 minutes of washing time, and two rinses). Afterward, it was dried for one day at 25 °C and 43% RH.

[0275] (1-2) Pretreatment of cotton towels

[0276] Beforehand, commercially available towels (Quanzhou towels, 100% cotton, 34cm×86cm×24 pieces) were repeatedly washed five times in a Panasonic NA-F70PB1 fully automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average molar addition number 8)). (Nonionic surfactant usage: 4.5g; standard cycle; water volume: 45L; water temperature: 25℃; cleaning time: 10 minutes; rinsing twice). Afterward, they were dried for one day at 25℃ and 43% RH.

[0277] (2) Evaluation of the use of test fabric in drum washing machines

[0278] Weigh 24g of the fiber friction reducer from Table 1 and wash two pretreated towels three times in a Panasonic NA-VX3800L washer-dryer under standard conditions (15 minutes wash, 1 rinse, 5 minutes spin-dry) with tap water (25°C), a total garment weight of 4kg. The garment quality was adjusted using pretreated underwear as garment conditioning fabric. Afterward, the towels were removed from the washing tub, gently spun, and hung to dry at 25°C and 43% RH for one day. After drying, the plain weave portion of the towels was cut into 2cm x 2cm pieces to obtain test pieces.

[0279] (3) Fiber friction test

[0280] Using the towel sheet treated as described in (2) above, dynamic friction was measured using a dynamic friction tester (TL201Tt manufactured by Trinity-Lab Inc.). A towel sheet (2cm × 2cm) was attached to the friction test unit using double-sided tape. 100μL of an aqueous solution containing the fiber friction reducing agent from Table 1 at a concentration of 0.53g / L was added to the attached towel sheet. The test was performed at a speed of 1.0mm / s under a load of 70g, and the average of three measurements was taken as the measured value. The results are shown in Table 1.

[0281] [Table 1]

[0282]

[0283] <Example 2 and Comparative Example 2>

[0284] The liquid detergent compositions for fibers shown in Table 2 were prepared using the following methods, and the following items were evaluated. The results are shown in Table 2.

[0285] [Preparation of liquid cleaning agent compositions for fibers]

[0286] In a 200 mL glass beaker, a 5 cm long Teflon (registered trademark) stir bar was added, and the mass was measured. Next, 20 g of 25°C deionized water, component (c), component (a), component (b), and / or component (x) were added sequentially, and the upper surface of the beaker was sealed with a Saran Wrap (registered trademark). The beaker containing the contents was placed in a 60°C water bath equipped with a magnetic stirrer, and stirred at 100 rpm for 30 minutes within a water temperature range of 60 ± 2°C. Subsequently, the pH of the contents was adjusted to 7 using an alkaline agent (monoethanolamine) or an acidic agent (citric acid). The pH was determined using the pH determination method described above. Then, the water in the water bath was replaced with 5°C tap water, and the mixture was cooled until the temperature of the composition in the beaker reached 25°C. Further components were then added, and the mixture was stirred for 10 minutes. Next, remove Saran Wrap (registered trademark), add ion-exchanged water to make the contents weigh 200g, and stir again at 100r / min for 5 minutes to obtain the liquid detergent composition for fibers described in Table 2.

[0287] [Methods for evaluating cleanliness]

[0288] (1) Preparation of artificially soiled fabric with model sebum

[0289] Artificial sebum staining liquid, composed of the following components, is applied to fabric to prepare artificial sebum staining fabric. The application of the artificial sebum staining liquid to the fabric is achieved by printing the staining liquid onto the fabric using a gravure roller coating machine. The process of applying the artificial sebum staining liquid to the fabric to produce artificial sebum staining fabric is carried out on a gravure roller with a unit capacity of 58cm². 3 / m 2 The coating process was carried out under the following conditions: coating speed 1.0 m / min, drying temperature 100℃, and drying time 1 min. The fabric used was Kapok 2003 (manufactured by Gutou Store).

[0290] *Composition of the artificial sebum contamination solution for the model: 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, Trioleic acid glyceride 13.0% by mass, Hexadecyl palmitate 2.2% by mass, Squalene 6.5% by mass, Lecithin liquid crystal 1.9% by mass, Kanuma Akado soil 8.1% by mass, Carbon black 0.01% by mass, Water (total 100% by mass)

[0291] (2) Evaluation of cleaning power

[0292] Five artificially soiled fabric samples (6cm x 6cm) were prepared using a Terg-O-Tometer (Ueshima, MS-8212) at 85 rpm for 10 minutes. Cleaning conditions were as follows: tap water (3.5°dH, 25°C) was added to achieve a concentration of 0.083% by mass of the liquid detergent composition for fibers described in Table 2, and cleaning was performed at 25°C. After cleaning, the samples were rinsed with tap water (25°C) for 3 minutes and then dried. The cleaning rate (%) was measured using the following method, and the average value of the five fabric samples was calculated. The results are shown in Table 2. Furthermore, the reflectance of the original fabric before soiling and before and after cleaning at 550 nm was measured using a colorimeter (Nippon Denshoku Co., Ltd., Z-300A). In this evaluation, a cleaning rate of 20% or higher was preferred, and a higher value was more desirable.

[0293] Cleanliness rate (%) = 100 × [(Reflectance after cleaning - Reflectance before cleaning) / (Reflectance of original fabric - Reflectance before cleaning)]

[0294] [Evaluation methods for softness and wrinkle resistance]

[0295] (1) Evaluation of the pretreatment of the test cloth

[0296] (1-1) Pretreatment of cotton towels

[0297] Beforehand, approximately 1.6 kg of commercially available towels (Quanzhou towels, 100% cotton, 34cm×86cm×12 towels) were repeatedly washed five times in a Panasonic NA-F70PB1 fully automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol (average molar addition number 8)). (Nonionic surfactant usage: 4.5g; standard process; water volume: 45L; water temperature: 25℃; cleaning time: 10 minutes; rinsing twice). Afterward, the towels were dried for one day at 25℃ and 43% RH.

[0298] (1-2) Pretreatment of cotton T-shirts

[0299] Beforehand, approximately 1.5 kg of commercially available T-shirts (UNIQLO crew neck T-shirts (M), 100% cotton, 10 moles) were repeatedly washed five times in a Panasonic NA-F70PB1 fully automatic washing machine using a nonionic surfactant (ethylene oxide adduct of lauryl alcohol, average molar addition of 8). (4.5 g of nonionic surfactant used, standard process, 45 L of water, 25 °C, 10 minutes of cleaning time, 2 rinses). Afterward, the T-shirts were dried for one day at 25 °C and 43% RH.

[0300] (1-3) Pretreatment of garment adjustment fabric

[0301] Beforehand, approximately 1.6 kg of commercially available intimate apparel (GUNZE Ltd.'s YG intimate apparel, 100% cotton, size L) was repeatedly washed five times in a fully automatic Panasonic NA-F70PB1 washing machine using a nonionic surfactant (4.5 g of nonionic surfactant, standard cycle, 45 L of water, 25 °C, 12 minutes of washing time, and two rinses). Afterward, it was dried for one day at 25 °C and 43% RH.

[0302] (2) Evaluate the cleanliness of the fibers

[0303] Weigh 24g of the composition from Table 2 and wash 2 towels and 2 T-shirts (pre-treated as described above) three times in a tumble dryer (Panasonic, NA-VX3800L) with tap water (25°C) and a total load of 4kg of clothing. The garments were then adjusted using a pre-treated undergarment as a garment conditioning fabric. Afterward, the garments were removed from the washing tub, gently spun, and hung to dry at 25°C and 43% RH for one day.

[0304] (3) Evaluation of softness

[0305] Six skilled fiber feel evaluators scored the softness of cotton towels treated with the fiber liquid cleaning agent composition (2) described in Table 2 according to the following criteria, and calculated the average score of the six evaluators. For each composition, one evaluator obtained a score for the cotton towel, and the average of these scores was taken as the evaluation score for that composition. The six evaluators' scores were accumulated, and the average score was calculated. The results are shown in Table 2. Values ​​are rounded to one decimal place. In this evaluation, an average score of 1 or higher is preferred, and higher values ​​are more desirable.

[0306] -1…The unfinished cotton towel is softer than the cotton towel treated with the composition of Comparative Example 2-1.

[0307] 0… The final product is as soft as the cotton towel treated with the composition of Comparative Example 2-1.

[0308] 1…The final product is slightly softer than the cotton towel treated with the composition of Comparative Example 2-1.

[0309] 2… The final product is softer than the cotton towel treated with the composition of Comparative Example 2-1.

[0310] 3… The final product is much softer than the cotton towel treated with the composition of Comparative Example 2-1.

[0311] (4) Evaluation of wrinkle suppression ability

[0312] Six skilled fiber feel evaluators scored the wrinkle condition of T-shirts after cleaning, rinsing, and drying using the fiber-specific liquid detergent composition described in Table 2, according to the following criteria. The average score of the six evaluators was calculated. The results are shown in Table 2. Values ​​in the table are rounded to one decimal place. In this evaluation, an average score of 1 or higher is preferred, with higher scores being more desirable.

[0313] -1… The final product is a T-shirt with more wrinkles than the one treated with the composition of Comparative Example 2-1.

[0314] 0… The final finished product is in the same wrinkled state as the T-shirt treated with the composition of Comparative Example 2-1.

[0315] 1… The final product is a T-shirt with slightly fewer wrinkles than the one treated with the composition of Comparative Example 2-1.

[0316] 2… The final product is a T-shirt with fewer wrinkles than the one treated with the composition of Comparative Example 2-1.

[0317] 3… The final finished T-shirt had far fewer wrinkles than the one treated with the composition of Comparative Example 2-1.

[0318]

Claims

1. A friction-reducing agent for fibers, wherein, It contains component (a) and component (b) below, and 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 75% by mass or less. (a) Composition: Internal olefin sulfonate with 18 carbon atoms; (b) Ingredients: Bis-2-propylheptylsulfosuccinate or its salt.

2. The friction-reducing agent for fibers as described in claim 1, wherein, (b) The components are compounds represented by the following general formula (b1), In the formula, R 1 R 2 They are 2-propylheptyl and A, respectively. 1 O, A 2 O represents olefinic oxygen groups with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of additions, and are both 0, while M represents a cation.

3. The friction-reducing agent for fibers as described in claim 2, wherein, In the general formula (b1), M is a cation selected from sodium ion, potassium ion, triethanolamine ion, diethanolamine ion, and monoethanolamine ion.

4. A method for reducing inter-fiber friction, wherein, The following components (a) and (b) are brought into contact with the fiber in an amount of 20% by mass to 75% by mass, with the ratio of component (b) to the total amount of component (a) and (b). (a) Composition: 18-carbon internal olefin sulfonate; (b) Ingredients: Bis-2-propylheptylsulfosuccinate or its salt.

5. A detergent composition for fibers, wherein, It contains component (a) and component (b) below, and 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 75% by mass or less. (a) Composition: 18-carbon internal olefin sulfonate; (b) Ingredients: Bis-2-propylheptylsulfosuccinate or its salt.

6. The fiber cleaning agent composition of claim 5, wherein, (b) The constituent is a compound represented by the following general formula (b1), In the formula, R 1 R 2 They are 2-propylheptyl and A, respectively. 1 O, A 2 O represents olefinic oxygen groups with 2 to 4 carbon atoms, x1 and x2 represent the average molar number of additions, and are both 0, while M represents a cation.

7. The detergent composition for fibers as described in claim 6, wherein, In the general formula (b1), M is a cation selected from sodium ion, potassium ion, triethanolamine ion, diethanolamine ion, and monoethanolamine ion.

8. The detergent composition for fibers according to any one of claims 5 to 7, wherein, (a) The content of the component is more than 1% by mass and less than 80% by mass.

9. The fiber cleaning agent composition according to any one of claims 5 to 7, wherein, (b) The content of the component is more than 1% by mass and less than 80% by mass.

10. The fiber cleaning agent composition according to any one of claims 5 to 7, wherein, It further contains the following component (c), (c) Ingredients: Solvents containing hydroxyl groups.

11. The detergent composition for fibers as claimed in claim 10, wherein, (c) The component is one or more organic solvents selected from components (c1) to (c4) below. (c1) Composition: Monohydric alcohol with 2 to 6 carbon atoms; (c2) Composition: Alcohols with 2 to 12 carbon atoms and more than two to twelve carbon atoms; (c3) Components: Organic solvents having a hydrocarbon group, an ether group, and a hydroxyl group having 1 to 8 carbon atoms, wherein the hydrocarbon group does not include partially substituted or unsubstituted aromatic groups; (c4) Ingredients: Organic solvents having partially substituted or unsubstituted aromatic groups, ether groups and hydroxyl groups.

12. The detergent composition for fibers as claimed in claim 10, wherein, (c) The content of the component is more than 0.1% by mass and less than 60% by mass.

13. A method for processing fiber products, wherein, The method for treating the fiber product involves cleaning the fiber product with a cleaning solution obtained by mixing the following components (a), (b), and water, followed by rinsing the fiber product with water. 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 75% by mass or less. (a) Composition: 18-carbon internal olefin sulfonate; (b) Ingredients: Bis-2-propylheptylsulfosuccinate or its salt.

14. The method for processing fiber products as described in claim 13, wherein, The cleaning solution further contains the following component (c): (c) Ingredients: Solvents containing hydroxyl groups.

15. The method for processing fiber products as described in claim 14, wherein, (c) The component is one or more organic solvents selected from components (c1) to (c4) below. (c1) Composition: Monohydric alcohol with 2 to 6 carbon atoms; (c2) Composition: Alcohols with 2 to 12 carbon atoms and more than two to twelve carbon atoms; (c3) Components: Organic solvents having a hydrocarbon group, an ether group, and a hydroxyl group having 1 to 8 carbon atoms, wherein the hydrocarbon group does not include partially substituted or unsubstituted aromatic groups; (c4) Ingredients: Organic solvents having partially substituted or unsubstituted aromatic groups, ether groups and hydroxyl groups.

16. The method for processing fiber articles as described in claim 14 or 15, wherein, The concentration of component (a) in the cleaning solution is more than 0.0001% by mass and less than 10% by mass.

17. The use of a formulation as a friction reducer for fibers, wherein, The formulation contains component (a) and component (b) below, and 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 75% by mass or less. (a) Composition: 18-carbon internal olefin sulfonate; (b) Ingredients: Bis-2-propylheptylsulfosuccinate or its salt.

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