Artificial silk water jet treatment agent, composition containing the same, artificial silk water jet treatment agent 1, composition containing the same, and method for manufacturing water jet nonwoven fabric

Abstract

Provided is a rayon water jet treatment agent or the like that can reduce the deterioration of water drop foaming of fibers using rayon water jet treatment agent in a water jet step even when the drying temperature in a drying step of the fibers performed before a carding process is high. The rayon water jet treatment agent of the present invention contains a nonionic surfactant (X) containing a specific ether monoester derivative (A) and a specific ether diester derivative (B), and a specific fatty acid (D) or a polyhydric alcohol (E).

Description

TECHNICAL FIELD

[0001] The present application relates to a rayon water jet treatment agent capable of reducing the deterioration of water drop foaming in a water jet step of fibers to which the agent is applied, a composition containing the agent, a first rayon water jet treatment agent, a composition containing the first agent, and a method for manufacturing a water jet nonwoven fabric. BACKGROUND

[0002] Natural fibers such as wood pulp fibers, regenerated fibers such as rayon, and synthetic resins such as polyolefins are known as raw fibers used for nonwoven fabrics. Among these, regenerated fibers such as paper pulp and cotton linters, i.e., rayon, are attracting attention from the viewpoint of excellent biodegradability, excellent moisture absorption, and excellent water absorption. When rayon is used to manufacture a water jet nonwoven fabric, in order to impart various properties such as carding passability, treatment with a rayon water jet treatment agent containing a surfactant or the like is sometimes performed on the surface of the raw fibers.

[0003] A rayon water jet treatment agent disclosed in Patent Documents 1 and 2 is known at present. Patent Document 1 discloses a short fiber treatment agent containing a fatty acid derivative having a structure obtained by adding an alkylene oxide to a fatty acid, at least one selected from a fatty acid and an oil, and a polyol. Patent Document 2 discloses a water jet fiber treatment agent containing a polyoxyalkylene derivative obtained by adding ethylene oxide to a fatty acid, and a specified fatty acid and / or oil function-imparting agent.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Patent No. 6533020

[0007] Patent Document 2: Japanese Patent No. 6132966 SUMMARY

[0008] Problems to be Solved by the Invention

[0009] However, the conventional rayon water jet treatment agent has the following problem: fibers to which the rayon water jet treatment agent is attached are likely to cause water drop foaming in water used in a water jet step (i.e., water used in water flow entanglement is likely to be mixed with the treatment agent dropped from the fibers, resulting in easy foaming). In particular, when the drying temperature in a drying step of fibers performed before a carding process is high, the water drop foaming in the water jet step deteriorates, causing a problem.

[0010] Means for Solving the Problems

[0011] The present inventors have conducted studies in order to solve the above problem, and as a result, have found that the use of a specific ether monoester derivative (A) and ether diester derivative (B) in combination in a rayon water jet treatment agent is particularly effective.

[0012] Various modes for solving the above problem are described.

[0013] The rayon water jet treatment agent of Mode 1 is characterized by containing a nonionic surfactant (X) and a fatty acid (D), the nonionic surfactant (X) comprising an ether monoester derivative (A) and an ether diester derivative (B). The ether monoester derivative (A) is a compound in which a total of 1 mol or more and 30 mol or less of an alkylene oxide having 2 or more and 3 or less carbon atoms is added to 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms. The ether diester derivative (B) is a compound in which a total of 1 mol or more and 30 mol or less of an alkylene oxide having 2 or more and 3 or less carbon atoms is added to 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms, and 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms is esterified, but does not include polyethylene glycol dilaurate. The fatty acid (D) is at least one selected from a fatty acid having 12 or more and 24 or less carbon atoms and an oil or fat.

[0014] The rayon water jet treatment agent of Mode 2 contains a nonionic surfactant (X) and a polyol (E) that does not include an ester, the nonionic surfactant (X) comprising an ether monoester derivative (A) and an ether diester derivative (B). The ether monoester derivative (A) is a compound in which a total of 1 mol or more and 30 mol or less of an alkylene oxide having 2 or more and 3 or less carbon atoms is added to 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms. The ether diester derivative (B) is a compound in which a total of 1 mol or more and 30 mol or less of an alkylene oxide having 2 or more and 3 or less carbon atoms is added to 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms, and 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms is esterified, but does not include polyethylene glycol dilaurate.

[0015] Mode 3 is the rayon water jet treatment agent of Mode 1 or 2, in which when the total of the contained proportions of the ether monoester derivative (A) and the ether diester derivative (B) is taken as 100 parts by mass, 10 parts by mass or more and 90 parts by mass or less of the ether monoester derivative (A) and 10 parts by mass or more and 90 parts by mass or less of the ether diester derivative (B) are contained.

[0016] Mode 4 is the rayon water jet treatment agent of Mode 1, further containing an anionic surfactant (C).

[0017] Mode 5 is the rayon water jet treatment agent as in Mode 1, wherein further a anionic surfactant (C) is contained; when the total of the containing proportions of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), and the above-mentioned anionic surfactant (C) is set to 100 parts by mass, the above-mentioned ether monoester derivative (A) is contained at 10 parts by mass or more and 85 parts by mass or less, the above-mentioned ether diester derivative (B) is contained at 10 parts by mass or more and 85 parts by mass or less, and the above-mentioned anionic surfactant (C) is contained at 0.1 parts by mass or more and 20 parts by mass or less.

[0018] Mode 6 is the rayon water jet treatment agent as in Mode 1, wherein further an anionic surfactant (C) is contained; when the total of the containing proportions of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), and the above-mentioned fatty acid (D) is set to 100 parts by mass, the above-mentioned ether monoester derivative (A) is contained at 10 parts by mass or more and 85 parts by mass or less, the above-mentioned ether diester derivative (B) is contained at 10 parts by mass or more and 85 parts by mass or less, the above-mentioned anionic surfactant (C) is contained at 0.1 parts by mass or more and 20 parts by mass or less, and the above-mentioned fatty acid (D) is contained at 0.1 parts by mass or more and 10 parts by mass or less.

[0019] Mode 7 is the rayon water jet treatment agent as in Mode 1, wherein further an anionic surfactant (C) and a polyol not including an ester (E) are contained; when the total of the containing proportions of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), the above-mentioned fatty acid (D), and the above-mentioned polyol (E) is set to 100 parts by mass, the above-mentioned ether monoester derivative (A) is contained at 10 parts by mass or more and 85 parts by mass or less, the above-mentioned ether diester derivative (B) is contained at 10 parts by mass or more and 85 parts by mass or less, the above-mentioned anionic surfactant (C) is contained at 0.1 parts by mass or more and 20 parts by mass or less, the above-mentioned fatty acid (D) is contained at 0.1 parts by mass or more and 10 parts by mass or less, and the above-mentioned polyol (E) is contained at 0.1 parts by mass or more and 70 parts by mass or less.

[0020] Mode 8 is the rayon water jet treatment agent as in Mode 1, 2, or 4, wherein further a lubricant (F) described below is contained. The lubricant (F) is at least one selected from a hydrocarbon, an ester not including a fat and oil, and a silicone.

[0021] Mode 9 is the water-jet treatment agent for rayon as in Mode 1, wherein further containing anionic surfactant (C), polyol (E) excluding ester, and the following lubricant (F); when the total of the containing ratios of the above ether monoester derivative (A), the above ether diester derivative (B), the above anionic surfactant (C), the above fatty acid (D), the above polyol (E), and the above lubricant (F) is set to 100 parts by mass, the above ether monoester derivative (A) is contained in 10 parts by mass or more and 85 parts by mass or less, the above ether diester derivative (B) is contained in 10 parts by mass or more and 85 parts by mass or less, the above anionic surfactant (C) is contained in 0.1 parts by mass or more and 20 parts by mass or less, the above fatty acid (D) is contained in 0.1 parts by mass or more and 10 parts by mass or less, the above polyol (E) is contained in 0.1 parts by mass or more and 70 parts by mass or less, and the above lubricant (F) is contained in 1 part by mass or more and 20 parts by mass or less. The lubricant (F) is at least one selected from the group consisting of hydrocarbons, esters excluding oil and fat, and silicones.

[0022] Mode 10 is the water-jet treatment agent for rayon as in Mode 1, wherein composed of a first water-jet treatment agent for rayon and a second water-jet treatment agent for rayon in a set; the above first water-jet treatment agent for rayon contains the above ether monoester derivative (A), the above ether diester derivative (B), and the above fatty acid (D), and further optionally contains the following lubricant (F); the above second water-jet treatment agent for rayon contains at least one selected from the group consisting of anionic surfactant (C) and polyol (E) excluding ester. The lubricant (F) is at least one selected from the group consisting of hydrocarbons, esters excluding oil and fat, and silicones.

[0023] Mode 11 is a composition containing a water-jet treatment agent for rayon, which contains the water-jet treatment agent for rayon as in any one of Modes 1 to 10, and the following solvent (S); when the total of the containing ratios of the above water-jet treatment agent for rayon and the above solvent (S) is set to 100 parts by mass, the above water-jet treatment agent for rayon is contained in 10 parts by mass or more and 99.99 parts by mass or less, and the above solvent (S) is contained in 0.01 parts by mass or more and 90 parts by mass or less. The solvent (S) has a boiling point of 105°C or lower at atmospheric pressure.

[0024] Mode 12 is the composition containing a water-jet treatment agent for rayon as in Mode 11, wherein the above solvent (S) is water.

[0025] The artificial silk water jet treatment agent of Mode 13 is characterized by being used in combination with an artificial silk water jet treatment agent of Mode 2 or a composition containing the artificial silk water jet treatment agent of Mode 2. The artificial silk water jet treatment agent of Mode 2 contains at least one selected from an anionic surfactant (C) and a polyol (E) not including an ester. The composition containing the artificial silk water jet treatment agent of Mode 2 contains the artificial silk water jet treatment agent of Mode 2 and a solvent (S). The artificial silk water jet treatment agent of Mode 13 contains an ether monoester derivative (A), an ether diester derivative (B), and a fatty acid (D), and further optionally contains a lubricant (F). The ether monoester derivative (A) is a compound in which 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms is added with a total of 1 mol or more and 30 mol or less of an alkylene oxide having 2 or more and 3 or less carbon atoms. The ether diester derivative (B) is a compound in which a compound in which 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms is added with a total of 1 mol or more and 30 mol or less of an alkylene oxide having 2 or more and 3 or less carbon atoms is esterified with 1 mol of a fatty acid having 12 or more and 24 or less carbon atoms, but does not include polyethylene glycol dilaurate. The fatty acid (D) is at least one selected from a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat. The lubricant (F) is at least one selected from a hydrocarbon, an ester not including an oil and fat, and a silicone. The solvent (S) has a boiling point of 105°C or lower at an atmospheric pressure.

[0026] The composition containing the artificial silk water jet treatment agent of Mode 14 is characterized by containing the artificial silk water jet treatment agent of Mode 13 and a solvent (S). The solvent (S) is a solvent having a boiling point of 105°C or lower at an atmospheric pressure.

[0027] The method for producing a water jet nonwoven fabric of Mode 15 is characterized by the following steps 1 to 3. Step 1 is a step of attaching the artificial silk water jet treatment agent of any one of Modes 1 to 10 to an artificial silk. Step 2 is a step of using the artificial silk obtained in step 1 for a carding process, thereby producing a carded web. Step 3 is a step of entangling the carded web obtained in step 2 with a water stream, thereby obtaining a water jet nonwoven fabric.

[0028] Effects of the Invention

[0029] According to the present application, even in the case where the drying temperature in the drying step of the fiber performed before the carding process is high, the deterioration of the water drop foaming in the water jet step using the fiber to which the artificial silk water jet treatment agent is imparted can be reduced. DETAILED DESCRIPTION

[0030] <1st Embodiment>

[0031] The following describes a first embodiment in which the treatment agent for water-jet processing of the artificial silk of the present application (hereinafter referred to as the treatment agent) is embodied. The treatment agent of this embodiment contains a nonionic surfactant (X) that includes a prescribed ether monoester derivative (A) and a prescribed ether diester derivative (B).

[0032] (nonionic surfactant (X))

[0033] The nonionic surfactant (X) used in the treatment agent of this embodiment includes the prescribed ether monoester derivative (A) and the prescribed ether diester derivative (B) as essential components. By using the ether monoester derivative (A) and the ether diester derivative (B) described below in combination, even if the drying temperature in the drying step of the fiber performed before the cotton processing is high, the deterioration of the water shedding bubbles of the fiber to which the treatment agent is applied in the water-jet processing step can be reduced.

[0034] (ether monoester derivative (A))

[0035] The ether monoester derivative (A) used in this embodiment is a compound in which 1 mol of a fatty acid having a carbon number of 12 or more and 24 or less is added to 1 mol or more and 30 mol or less of an alkylene oxide having a carbon number of 2 or more and 3 or less. The ether monoester derivative (A) has a monoester structure in which a fatty acid is bonded to one side of a polyoxyalkylene chain that is polymerized from an alkylene oxide having a carbon number of 2 or more and 3 or less, forming an ester bond.

[0036] The fatty acid used as a raw material of the ether monoester derivative (A) can be appropriately selected from known ones, and can be a saturated fatty acid or an unsaturated fatty acid. In addition, it can be linear or have a branched structure.

[0037] Specific examples of the fatty acid can include, for example, (1) fatty acids having a linear alkyl group with one carbon, such as dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), tetracosanoic acid, and the like; (2) fatty acids having a branched structure with one carbon, such as isododecanoic acid, isotridecanoic acid, isomyristic acid, isohexadecanoic acid, isooctadecanoic acid, and the like; (3) fatty acids having a linear alkenyl group with one carbon, such as myristoleic acid, palmitoleic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid, α-linolenic acid, γ-linolenic acid, arachidonic acid, and the like; (4) hydroxycarboxylic acids, such as ricinoleic acid; (5) fatty acids derived from nature, such as castor oil fatty acid, sesame oil fatty acid, rosin oil fatty acid, soybean oil fatty acid, rapeseed oil fatty acid, palm oil fatty acid, palm kernel fatty acid, coconut oil fatty acid, and the like.

[0038] Specific examples of the alkylene oxide having 2 or more and 3 or less carbon atoms as the raw material of the ether monoester derivative (A) include ethylene oxide and propylene oxide. The number of moles of the alkylene oxide is preferably 1 or more and 30 or less, more preferably 5 or more and 25 or less. The number of moles of the alkylene oxide indicates the number of moles of the alkylene oxide added to 1 mole of the compound to be added as the raw material. One type of alkylene oxide can be used alone, or two types of alkylene oxides can be used in combination. When two types of alkylene oxides are used, the addition mode can be block addition, random addition, or a combination of block addition and random addition, and is not particularly limited.

[0039] Specific examples of the ether monoester derivative (A) include a compound in which 10 moles of an alkylene oxide are added to 1 mole of stearic acid, a compound in which 5 moles of an alkylene oxide are added to 1 mole of stearic acid, a compound in which 20 moles of an alkylene oxide are added to 1 mole of oleic acid, a compound in which 13 moles of an alkylene oxide are added to 1 mole of oleic acid, a compound in which 10 moles of an alkylene oxide are added to 1 mole of oleic acid, a compound in which 5 moles of an alkylene oxide are added to 1 mole of oleic acid, a compound in which 10 moles of an alkylene oxide are added to 1 mole of palmitic acid, a compound in which 10 moles of an alkylene oxide are added to 1 mole of lauric acid, a compound in which 10 moles of an alkylene oxide are added to 1 mole of coconut fatty acid, a compound in which 5 moles of ethylene oxide and 10 moles of propylene oxide are randomly added to 1 mole of stearic acid, a compound in which 10 moles of ethylene oxide and 5 moles of propylene oxide are randomly added to 1 mole of stearic acid, a compound in which 5 moles of ethylene oxide are added to 1 mole of stearic acid and then 10 moles of propylene oxide are added, and a compound in which 10 moles of ethylene oxide are added to 1 mole of stearic acid and then 5 moles of propylene oxide are added.

[0040] These ether monoester derivatives (A) can be used alone or in combination of two or more types.

[0041] (Ether diester derivative (B))

[0042] The ether diester derivative (B) used in the present embodiment is a compound in which 1 mole or more and 30 moles or less of an alkylene oxide having 2 or more and 3 or less carbon atoms are added to 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms, and then 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms is esterified, but does not include polyethylene glycol dilaurate. The ether diester derivative (B) has a diester structure in which the fatty acids are bonded to both ends of a polyoxyalkylene chain formed by polymerization of an alkylene oxide having 2 or more and 3 or less carbon atoms, respectively, to form ester bonds. The two fatty acids that constitute the ether diester derivative (B) can be the same or different.

[0043] Specific examples of the fatty acid as a raw material of the ether diester derivative (B) are the same as those described as the specific examples of the fatty acid as a raw material of the ether monoester derivative (A).

[0044] Specific examples of the alkylene oxide having 2 or more and 3 or less carbon atoms as a raw material of the ether diester derivative (B) are the same as those described as the specific examples of the alkylene oxide having 2 or more and 3 or less carbon atoms as a raw material of the ether monoester derivative (A).

[0045] Specific examples of the ether diester derivative (B) can include, for example, a compound obtained by adding 14 moles of an alkylene oxide to 1 mole of oleic acid and then adding 1 mole of oleic acid, a compound obtained by adding 23 moles of an alkylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid, a compound obtained by adding 9 moles of an alkylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid, a compound obtained by adding 5 moles of an alkylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid, a compound obtained by adding 9 moles of an alkylene oxide to 1 mole of lauric acid and then adding 1 mole of lauric acid, a compound obtained by randomly adding 5 moles of ethylene oxide and 10 moles of propylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid, a compound obtained by randomly adding 10 moles of ethylene oxide and 5 moles of propylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid, a compound obtained by adding 5 moles of ethylene oxide to 1 mole of stearic acid, adding 10 moles of propylene oxide, and then adding 1 mole of stearic acid, a compound obtained by adding 10 moles of ethylene oxide to 1 mole of stearic acid, adding 5 moles of propylene oxide, and then adding 1 mole of stearic acid, and the like.

[0046] These ether diester derivatives (B) can be used singly or in combination of two or more as appropriate.

[0047] The lower limit of the content ratio of the ether monoester derivative (A) in the treatment agent is preferably 5% by mass or more, and more preferably 10% by mass or more. When the content ratio of the ether monoester derivative (A) is 5% by mass or more, the deterioration of the water drop foaming in the hydroentangling step of the fiber to which the treatment agent is applied can be further reduced. Furthermore, the upper limit of the content ratio of the ether monoester derivative (A) is preferably 95% by mass or less, and more preferably 90% by mass or less. When the content ratio of the ether monoester derivative (A) is 95% by mass or less, the deterioration of the water drop foaming in the hydroentangling step of the fiber to which the treatment agent is applied can be further reduced. The range of any combination of the above upper limit and lower limit can also be used.

[0048] The lower limit of the content ratio of the ether diester derivative (B) in the treatment agent is preferably 5% by mass or more, and more preferably 10% by mass or more. When the content ratio of the ether diester derivative (B) is 5% by mass or more, the deterioration of the water-drop foaming of the fiber to which the treatment agent is applied in the water jetting step can be further reduced. Furthermore, the upper limit of the content ratio of the ether diester derivative (B) is preferably 95% by mass or less, and more preferably 90% by mass or less. When the content ratio of the ether diester derivative (B) is 95% by mass or less, the deterioration of the water-drop foaming of the fiber to which the treatment agent is applied in the water jetting step can be further reduced. The range of any combination of the above upper limit and lower limit can also be used.

[0049] In the treatment agent, it is preferable that, when the total of the content ratios of the ether monoester derivative (A) and the ether diester derivative (B) is set to 100 parts by mass, the ether monoester derivative (A) is contained in an amount of 10 parts by mass or more and 90 parts by mass or less, and the ether diester derivative (B) is contained in an amount of 10 parts by mass or more and 90 parts by mass or less. By being defined in this range, the deterioration of the water-drop foaming of the fiber to which the treatment agent is applied in the water jetting step can be further reduced. The range of any combination of the above upper limit and lower limit can also be used.

[0050] (Other nonionic surfactants)

[0051] In the treatment agent of the present embodiment, the nonionic surfactant (X) can also contain other nonionic surfactants than the ether monoester derivative (A) and the ether diester derivative (B).

[0052] Other nonionic surfactants can be appropriately used. Specific examples of the other nonionic surfactants can include, for example, (1) compounds obtained by adding to an organic acid, an organic alcohol, an organic amine, and / or an organic amide, an alkylene oxide having 2 or more and 4 or less carbon atoms, such as ether-type nonionic surfactants such as polyoxyethylene octyl ether, polyoxyethylene stearyl ether, polyoxyethylene lauryl ether, polyoxyethylene lauryl ether methylether, polyoxyethylene polyoxypropylene lauryl ether, polyoxypropylene lauryl ether methylether, polyoxyethylene oleyl ether, polyoxybutylene oleyl ether, polyoxyethylene polyoxypropylene nonyl ether, polyoxypropylene nonyl ether, polyoxyethylene polyoxypropylene octyl ether, an ethylene oxide adduct of 2-hexylhexanol, polyoxyethylene 2-ethyl-l-hexyl ether, polyoxyethylene isononyl ether, polyoxyethylene dodecyl ether, a compound obtained by adding ethylene oxide to p-dodecylphenol, polyoxyethylene tridecyl ether, polyoxyalkylene myristyl ether, polyoxyethylene lauryl amine ether, polyoxyethylene lauryl amide ether, polyoxyalkylene tristyrylphenyl ether, and the like; (2) polyoxyalkylene sorbitan trioleate, polyoxyalkylene sorbitan monostearate, polyoxyalkylene sorbitan tristearate, polyoxyalkylene hardened castor oil trioctanoate, polyoxyalkylene hardened castor oil maleate, stearate, or oleate, and the like, polyoxyalkylene polyol fatty acid ester-type nonionic surfactants; (3) alkylamide-type nonionic surfactants such as stearic acid diethanolamide and diethanolamine monolauryl amide; (4) polyoxyalkylene fatty acid amide-type nonionic surfactants such as polyoxyethylene diethanolamine monooleylamide, polyoxyethylene laurylamine, and polyoxyethylene tallow amine; and (5) ether-ester compounds such as a copolymer of polyoxyethylene and dimethyl phthalate and lauryl alcohol, and the like.

[0053] These nonionic surfactants can be used alone or in combination of two or more.

[0054] (Anionic surfactant (C))

[0055] The treatment agent of the present embodiment can further contain an anionic surfactant (C). By containing the anionic surfactant (C) in the treatment agent, it is possible to improve the emulsion stability of a diluted solution obtained by diluting the treatment agent with a solvent.

[0056] The anionic surfactant (C) can be appropriately used known ones. Specific examples of the anionic surfactant (C) can include, for example, (1) phosphate ester salts of fatty alcohol such as lauryl phosphate ester salt, cetyl phosphate ester salt, isocetyl phosphate ester salt, octyl phosphate ester salt, oleyl phosphate ester salt, stearyl phosphate ester salt, and the like; (2) phosphate ester salts of fatty alcohol to which at least one alkylene oxide selected from ethylene oxide and propylene oxide is added, such as polyoxyethylene lauryl ether phosphate ester salt, polyoxyethylene oleyl ether phosphate ester salt, polyoxyethylene stearyl ether phosphate ester salt, and the like; (3) sulfonic acid salts of fatty alcohol or aromatic sulfonic acid such as lauryl sulfonic acid salt, myristyl sulfonic acid salt, cetyl sulfonic acid salt, oleyl sulfonic acid salt, stearyl sulfonic acid salt, tetradecyl sulfonic acid salt, dodecylbenzenesulfonic acid salt, secondary alkyl sulfonic acid (carbon number: 13 to 15) salt, secondary alkyl sulfonic acid salt (carbon number: 11 to 14), a-olefin sulfonic acid salt, and the like; (4) sulfuric acid ester salts of fatty alcohol such as lauryl sulfuric acid ester salt, oleyl sulfuric acid ester salt, stearyl sulfuric acid ester salt, and the like; (5) sulfuric acid ester salts of fatty alcohol to which at least one alkylene oxide selected from ethylene oxide and propylene oxide is added, such as polyoxyethylene lauryl ether sulfuric acid ester salt, polyoxyalkylene (polyoxyethylene, polyoxypropylene) lauryl ether sulfuric acid ester salt, polyoxyethylene oleyl ether sulfuric acid ester salt, and the like; (6) sulfuric acid ester salts of fatty acid such as ricin oil fatty acid sulfuric acid ester salt, sesame oil fatty acid sulfuric acid ester salt, rosin oil fatty acid sulfuric acid ester salt, soybean oil fatty acid sulfuric acid ester salt, rape seed oil fatty acid sulfuric acid ester salt, palm oil fatty acid sulfuric acid ester salt, and the like; (7) sulfuric acid ester salts of oil such as ricin oil sulfuric acid ester salt, sesame oil sulfuric acid ester salt, rosin oil sulfuric acid ester salt, soybean oil sulfuric acid ester salt, rape seed oil sulfuric acid ester salt, palm oil sulfuric acid ester salt, and the like; (8) fatty acid salts such as lauryl acid salt, oleyl acid salt, stearyl acid salt, 2-ethylhexyl acid salt, and the like; (9) sulfosuccinic acid ester salts of fatty alcohol such as di(2-ethylhexyl)sulfosuccinic acid salt, and the like; and (10) N-acyl sarcosinates such as oleoyl sarcosinate, and the like.

[0057] The salt constituting the anionic surfactant (C) can include metal salts, ammonium salts, phosphonium salts, organic amine salts, and the like.

[0058] The metal salt can include, for example, alkali metal salts, alkaline earth metal salts. Specific examples of the alkali metal constituting the alkali metal salt can include, for example, sodium, potassium, lithium, and the like. The alkaline earth metal constituting the alkaline earth metal salt can include metals of Group 2 elements, such as calcium, magnesium, beryllium, strontium, barium, and the like.

[0059] Specific examples of the phosphonium constituting the phosphonium salt can include, for example, tetramethylphosphonium, tetraethylphosphonium, tetrabutylphosphonium, tetraoctylphosphonium, dibutyl dihexylphosphonium, trihexyl tetradecylphosphonium, triethyl octylphosphonium, trioctyl methylphosphonium, triphenyl methylphosphonium, and the like quaternary phosphonium.

[0060] The amine constituting the organic amine salt can be any one of a primary amine, a secondary amine, and a tertiary amine. Specific examples of the amine constituting the amine salt can include, for example, (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, dimethyl laurylamine, and the like; (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, derivatives thereof, and the like; (3) alkanolamines such as monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyldiethanolamine, octyldiethanolamine, lauryldiethanolamine, and the like; (4) arylamines such as N-methylbenzylamine; and (5) polyoxyalkylene alkylamine ethers such as polyoxyethylene laurylamine ether, polyoxyethylene stearylamine ether, and the like.

[0061] These anionic surfactants (C) can be used singly or in combination of two or more as appropriate.

[0062] The lower limit of the content ratio of the anionic surfactant (C) in the treatment agent is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more. When the content ratio of the anionic surfactant (C) is 0.1% by mass or more, the emulsion stability of the diluted solution of the treatment agent after dilution with a solvent can be further improved. The upper limit of the content ratio of the anionic surfactant (C) is preferably 30% by mass or less, and more preferably 25% by mass or less. When the content ratio of the anionic surfactant (C) is 30% by mass or less, the deterioration of the water drop foaming in the hydroentangling step of the fiber to which the treatment agent is applied can be further reduced. The range can also be any combination of the above-mentioned upper and lower limits.

[0063] When the total of the content ratios of the ether monoester derivative (A), the ether diester derivative (B), and the anionic surfactant (C) in the treatment agent is 100 parts by mass, it is preferable to contain 10 parts by mass or more and 85 parts by mass or less of the ether monoester derivative (A), 10 parts by mass or more and 85 parts by mass or less of the ether diester derivative (B), and 0.1 parts by mass or more and 20 parts by mass or less of the anionic surfactant (C). By being defined in this range, the deterioration of the water drop foaming in the hydroentangling step of the fiber to which the treatment agent is applied can be further reduced. The range can also be any combination of the above-mentioned upper and lower limits.

[0064] (Fatty acid (D))

[0065] The treatment agent of the present embodiment can further contain a fatty acid (D). By containing the fatty acid (D) in the treatment agent, the deterioration of the water drop foaming in the hydroentangling step of the fiber to which the treatment agent is applied can be reduced.

[0066] The fatty acid (D) used in the treatment agent of the present embodiment is at least one selected from fatty acids having 12 or more and 24 or less carbon atoms and oils and fats.

[0067] Specific examples of the fatty acid are the same as those described as the raw material of the ether monoester derivative (A).

[0068] Examples of the oil and fat can include at least one selected from vegetable oils, animal oils, and hardened oils of these. Specific examples of the vegetable oil can include, for example, coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, olive oil, camellia oil, shea butter, almond oil, safflower oil, cottonseed oil, corn oil, rice bran oil, rice germ oil, grape seed oil, avocado oil, palm oil, and pine oil. Specific examples of the animal oil can include, for example, egg yolk oil, beef tallow, and lard.

[0069] These fatty acids (D) can be used alone or in combination of two or more.

[0070] The lower limit of the content ratio of the fatty acid (D) in the treatment agent is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more. When the content ratio of the fatty acid (D) is 0.1% by mass or more, the deterioration of the water drop foaming of the fiber to which the treatment agent is applied in the hydroentanglement step can be further reduced. The upper limit of the content ratio of the fatty acid (D) is preferably 15% by mass or less, and more preferably 10% by mass or less. When the content ratio of the fatty acid (D) is 15% by mass or less, the emulsion stability of the diluted solution of the treatment agent after being diluted with a solvent can be further improved. The range can also be any combination of the above-mentioned upper and lower limits.

[0071] When the total of the content ratios of the ether monoester derivative (A), the ether diester derivative (B), the anionic surfactant (C), and the fatty acid (D) in the treatment agent is 100 parts by mass, it is preferable to contain 10 parts by mass or more and 85 parts by mass or less of the ether monoester derivative (A), 10 parts by mass or more and 85 parts by mass or less of the ether diester derivative (B), 0.1 parts by mass or more and 20 parts by mass or less of the anionic surfactant (C), and 0.1 parts by mass or more and 10 parts by mass or less of the fatty acid (D). By being defined in this range, the deterioration of the water drop foaming of the fiber to which the treatment agent is applied in the hydroentanglement step can be further reduced. In addition, the emulsion stability of the diluted solution of the treatment agent after being diluted with a solvent can be further improved. The range can also be any combination of the above-mentioned upper and lower limits.

[0072] (Polyol (E))

[0073] The treatment agent of the present embodiment can further contain a polyol (E). By containing the polyol (E) in the treatment agent, the carding property of the fiber to which the treatment agent is applied at the time of passing through the carding machine can be improved.

[0074] Specific examples of the polyhydric alcohol can include, for example, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 1,5-pentanediol, 1,6-hexanediol, 2,5-hexanediol, 2-methyl-2,4-pentanediol, 2,3-dimethyl-2,3-butanediol, glycerol, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitan, neopentatetraol, sorbitol, and the like.

[0075] These polyhydric alcohols (E) can be used singly or in combination of two or more as appropriate.

[0076] The lower limit of the content ratio of the polyhydric alcohol (E) in the treatment agent is preferably 0.1% by mass or more, and more preferably 0.2% by mass or more. The upper limit of the content ratio of the polyhydric alcohol (E) is preferably 70% by mass or less, and more preferably 65% by mass or less. By setting the content ratio of the polyhydric alcohol (E) within this range, the carding property of the fiber to which the treatment agent is applied at the time of carding can be improved. The range can also be any combination of the above upper limit and lower limit.

[0077] In the treatment agent, when the total of the content ratios of the ether monoester derivative (A), the ether diester derivative (B), the anionic surfactant (C), the fatty acid (D), and the polyhydric alcohol (E) is set to 100 parts by mass, it is preferable to contain the ether monoester derivative (A) in an amount of 10 parts by mass or more and 85 parts by mass or less, the ether diester derivative (B) in an amount of 10 parts by mass or more and 85 parts by mass or less, the anionic surfactant (C) in an amount of 0.1 parts by mass or more and 20 parts by mass or less, the fatty acid (D) in an amount of 0.1 parts by mass or more and 10 parts by mass or less, and the polyhydric alcohol (E) in an amount of 0.1 parts by mass or more and 70 parts by mass or less. By setting within this range, the deterioration of the water shedding bubbles of the fiber to which the treatment agent is applied in the water jetting step can be further reduced. The range can also be any combination of the above upper limit and lower limit.

[0078] (Lubricant (F))

[0079] The treatment agent of the present embodiment can further be compounded with a lubricant (F). By containing the lubricant (F) in the treatment agent, the carding property of the fiber to which the treatment agent is applied at the time of carding can be improved.

[0080] The lubricant (F) used in the treatment agent of the present embodiment is at least one selected from the group consisting of hydrocarbons, esters excluding fats and oils, and silicones.

[0081] Specific examples of the hydrocarbon compounds can include, for example, aromatic hydrocarbons, paraffin hydrocarbons, naphthene hydrocarbons, and the like. More specifically, examples can include, for example, mineral oil, spindle oil, and flow paraffin. These hydrocarbon compounds can also be appropriately used as commercially available products.

[0082] The ester is not particularly limited, and examples of the ester oil can include ester oils produced from a fatty acid and an alcohol. The ester oil is produced, for example, from a fatty acid having an odd or even number of hydrocarbon groups and an alcohol.

[0083] The fatty acid as a raw material of the ester oil is not particularly limited in the number of carbon atoms, the presence or absence of a branched chain, the number of members, and the like, and can be, for example, a higher fatty acid, a fatty acid having a ring, or a fatty acid having an aromatic ring. The alcohol as a raw material of the ester oil is not particularly limited in the number of carbon atoms, the presence or absence of a branched chain, the number of members, and the like, and can be, for example, a higher alcohol, an alcohol having a ring, or an alcohol having an aromatic ring.

[0084] Specific examples of the ester oil can include, for example, (1) ester compounds formed from an aliphatic monohydric alcohol and an aliphatic monocarboxylic acid, such as stearyl stearate, octyl palmitate, oleyl laurate, oleyl oleate, isotridecyl stearate, isomyristyl oleate, and the like; (2) completely ester compounds formed from an aliphatic polyhydric alcohol and an aliphatic monocarboxylic acid, such as 1,6-hexanediol didecanoate, glycerin trioleate, trimethylolpropane trilaurate, neopentyl tetraglycol tetraoctanoate, and the like; (3) partially ester compounds formed from an aliphatic polyhydric alcohol and an aliphatic monocarboxylic acid, such as sorbitan monostearate, and the like; (4) completely ester compounds formed from an aliphatic monohydric alcohol and an aliphatic polycarboxylic acid, such as dioleyl azelate, dioleoyl thiodipropionate, diisocetyl thiodipropionate, diisostearyl thiodipropionate, and the like; (5) ester compounds formed from an aromatic monohydric alcohol and an aliphatic monocarboxylic acid, such as benzyl oleate, benzyl laurate, and the like; (6) completely ester compounds formed from an aromatic polyhydric alcohol and an aliphatic monocarboxylic acid, such as bisphenol A dilaurate, and the like; (7) completely ester compounds formed from an aliphatic monohydric alcohol and an aromatic polycarboxylic acid, such as bis 2-ethylhexyl phthalate, diisostearyl isophthalate, tricoctyl trimellitate, and the like; and the like.

[0085] Specific examples of the silicone can include, for example, dimethyl silicone, phenyl-modified silicone, amino-modified silicone, amido-modified silicone, polyether-modified silicone, amino polyether-modified silicone, alkyl-modified silicone, alkyl aralkyl-modified silicone, alkyl polyether-modified silicone, ester-modified silicone, epoxy-modified silicone, methanol-modified silicone, mercapto-modified silicone, polyoxyalkylene-modified silicone, and the like.

[0086] The lower limit of the content ratio of the lubricant (F) in the treatment agent is preferably 0.5% by mass or more, and more preferably 1% by mass or more. The upper limit of the content ratio of the lubricant (F) is preferably 25% by mass or less, and more preferably 20% by mass or less. By setting the content ratio of the lubricant (F) within this range, the carding property of the fiber to which the treatment agent is applied at the time of carding can be improved. The range can also be any combination of the above upper and lower limits.

[0087]

[0088] (Saving method)

[0089] The treatment agent can be configured to include the above components (A) to (E) in one dosage form. From the viewpoint of improving the stability of the preparation, the treatment agent can also be configured to be a two-dosage form treatment agent as shown below.

[0090] The two-dosage form treatment agent is configured to include a first treatment agent for water jetting of rayon (hereinafter referred to as "first treatment agent") and a second treatment agent for water jetting of rayon (hereinafter referred to as "second treatment agent") in a set, wherein the first treatment agent contains the ether monoester derivative (A) and the ether diester derivative (B), and the second treatment agent contains at least one selected from the anionic surfactant (C) and the polyol (E). The first treatment agent can further optionally contain the fatty acid (D) and / or the lubricant (F).

[0091] The two-dosage form treatment agent is configured to include the first treatment agent and the second treatment agent in separate dosage forms before use, such as at the time of storage or distribution. The two-dosage form treatment agent is mixed with the first treatment agent and the second treatment agent to prepare a mixture at the time of use.

[0092] (Solvent)

[0093] ​The treatment agent of the present embodiment can also be mixed with the solvent (S) as appropriate to thereby prepare a composition containing the treatment agent for rayon hydroentanglement (hereinafter referred to as "treatment agent-containing composition") and stored or circulated as the treatment agent-containing composition.

[0094] The solvent (S) has a boiling point of 105°C or lower at atmospheric pressure. The atmospheric pressure in the present specification refers to a standard atmospheric pressure (101325 Pa = 1 atm). The solvent can include water, an organic solvent. Specific examples of the organic solvent can include lower alcohols such as ethanol and propanol, or a low-polarity solvent such as hexane. These solvents can be used alone as one kind, or two or more kinds can be used in appropriate combination. Among these, from the viewpoint of excellent dispersibility or solubility of each component, a polar solvent such as water or a lower alcohol is preferable, and from the viewpoint of excellent emulsion stability and workability, water is more preferable.

[0095] In the treatment agent-containing composition, when the total of the content ratio of the treatment agent and the solvent (S) is 100 parts by mass, it is preferable to contain the treatment agent in an amount of 10 parts by mass or more and 99.99 parts by mass or less, and the solvent (S) in an amount of 0.01 parts by mass or more and 90 parts by mass or less.

[0096] (Rayon)

[0097] The rayon to which the treatment agent of the present embodiment is applied can be a long fiber generally referred to as "filament", or a short fiber generally referred to as "staple". Among these, a short fiber is preferable. The length of the short fiber in the present embodiment is not particularly limited as long as it conforms to the definition of a short fiber in the technical field, and for example, it is preferably 100 mm or less, and more preferably 51 mm or less.

[0098] The effects of the treatment agent of the first embodiment will be described.

[0099] (1-1) The treatment agent of the above-described first embodiment is configured to contain a nonionic surfactant (X) that includes the above-described ether monoester derivative (A) and ether diester derivative (B). Therefore, even in the case where the drying temperature in the drying step of the fiber performed before the carding process is high, the deterioration of the water drop foaming of the fiber to which the treatment agent for rayon hydroentanglement is imparted in the hydroentanglement step can be reduced. In addition, the emulsion stability of the dilution liquid of the treatment agent can be improved. Furthermore, the carding property of the fiber to which the treatment agent is imparted at the time of carding can be improved.

[0100] (1-2) The treatment agent of the above-described first embodiment can also be configured to include a first treatment agent and a second treatment agent in a set, wherein the first treatment agent contains the ether monoester derivative (A) and the ether diester derivative (B), and the second treatment agent contains at least one selected from the anionic surfactant (C) and the polyol (E). According to this configuration, it is possible to improve the formulation stability, particularly the storage stability, of the treatment agent.

[0101] <2nd Embodiment>

[0102] Next, the second embodiment that embodies the first treatment agent of the present application will be described, with the focus on the points of difference from the above-described first embodiment.

[0103] The first treatment agent of the present embodiment contains the ether monoester derivative (A) and the ether diester derivative (B). The first treatment agent can further optionally contain the fatty acid (D) and / or the lubricant (F). The first treatment agent is used in combination with the second treatment agent or a composition containing the second treatment agent for water jetting of rayon (hereinafter referred to as "composition containing the second treatment agent"), wherein the second treatment agent contains at least one selected from the anionic surfactant (C) and the polyol (E), and the composition containing the second treatment agent contains the second treatment agent and the solvent (S).

[0104] The ether monoester derivative (A), the ether diester derivative (B), the anionic surfactant (C), the fatty acid (D), the polyol (E), the lubricant (F), and the solvent (S) are respectively the same as the components described in the first embodiment.

[0105] (Solvent)

[0106] The first treatment agent of the present embodiment can also be mixed with the solvent (S) as appropriate to prepare a composition containing the first treatment agent for water jetting of rayon (hereinafter referred to as "composition containing the first treatment agent"), and be stored or circulated as the composition containing the first treatment agent.

[0107] The solvent (S) can be exemplified by those of the first embodiment. In the composition containing the first treatment agent, when the total of the contained proportions of the first treatment agent and the solvent is 100 parts by mass, it is preferable to contain the first treatment agent by 0.01 parts by mass or more.

[0108] The effects of the first treatment agent of the second embodiment will be described. The second embodiment has the following effects in addition to the effects of the above-described first embodiment.

[0109] (2-1) The first treatment agent of the second embodiment contains an ether monoester derivative (A) and an ether diester derivative (B), and is used in combination with a second treatment agent containing an anionic surfactant (C) or a polyhydric alcohol (E). Thus, the formulation stability, particularly the storage stability, of the first treatment agent and the second treatment agent can be improved. Furthermore, by adjusting the mixing ratio with the second treatment agent, the composition of the resulting treatment agent can be adjusted. Furthermore, the first treatment agent can be circulated separately from the second treatment agent.

[0110] <3rd Embodiment>

[0111] Next, a third embodiment of the method for manufacturing the spunlace nonwoven fabric of the present application (hereinafter referred to as "the method for manufacturing the nonwoven fabric") will be described.

[0112] The method for manufacturing the nonwoven fabric of the present embodiment includes the following steps: a step of attaching a treatment agent to a rayon fiber (step 1); a step of manufacturing a card web by using the rayon fiber obtained in step 1 in a carding process (step 2); and a step of obtaining a spunlace nonwoven fabric by entangling the card web obtained in step 2 with a water stream (step 3).

[0113] When the treatment agent is a one-form treatment agent, a diluent containing a solvent and the treatment agent of the first embodiment is prepared in step 1. The method for preparing the diluent can be exemplified by, for example, a method in which the treatment agent of the first embodiment or a composition containing the treatment agent is added to a solvent. The diluent is preferably prepared by adding the treatment agent of the first embodiment or a composition containing the treatment agent to water.

[0114] When the treatment agent is a two-form treatment agent, a diluent containing a solvent and the first treatment agent and the second treatment agent of the second embodiment is prepared in step 1. The method for preparing the diluent can be exemplified by, for example, a method in which the first treatment agent or a composition containing the first treatment agent, and the second treatment agent or a composition containing the second treatment agent are added to a solvent. The diluent is preferably prepared by adding the first treatment agent or a composition containing the first treatment agent, and the second treatment agent or a composition containing the second treatment agent to water. The preferable ratio of the content of the first treatment agent to the second treatment agent is the mass ratio of nonvolatile components, that is, the first treatment agent / second treatment agent = 95 / 5 to 5 / 95. By being defined in this range, the operability can be improved. In the present specification, the nonvolatile components mean the residue after the subject is heat-treated at 105°C for 2 hours to sufficiently remove volatile substances, that is, the absolute dry substance.

[0115] The solvent used for preparing the diluent can be exemplified by those exemplified in the first embodiment. From the viewpoint of the operability and the like, the concentration of the treatment agent in the diluent is preferably 0.1% by mass or more and 10% by mass or less.

[0116] In the case of using the first treatment agent and the second treatment agent together, the mixing ratio of each agent can be arbitrarily changed. Therefore, even if there are differences in manufacturing conditions such as differences in manufacturing equipment or differences in climate such as temperature and humidity, a treatment agent or a diluent that imparts optimal fiber properties or fiber manufacturing properties can be easily prepared by slightly adjusting the mixing ratio.

[0117] The method of attaching the treatment agent can employ a publicly known method such as dipping, spraying, showering, drumming, dropping, and flowing. Furthermore, the step of attaching the treatment agent is not particularly limited and can be, for example, a step subsequent to a refining step. The amount of the treatment agent attached to the rayon is preferably 0.1 to 1% by mass of the solid content without a solvent. The fiber to which the treatment agent is imparted can be subjected to a drying process under appropriate conditions.

[0118] Step 2 is a step of carding the rayon to which the treatment agent described above is attached to produce a card web. The carding can be performed using a publicly known carding machine. Examples include a flat card, a combination card, and a cylinder card.

[0119] Step 3, which is a step of obtaining a spunlace nonwoven fabric, is a step of entangling the card web obtained in the step of producing a card web with water flow. The card web is sprayed with high-pressure water flow, and the fibers can be entangled with each other to become plate-like by the pressure of the water flow. After the water flow entangling step, an appropriate drying step or a winding step can be performed.

[0120] The effects of the method of producing a nonwoven fabric according to the third embodiment will be described. The third embodiment has the effects of the above-described embodiments and the following effects.

[0121] (3-1) The method of producing a nonwoven fabric according to the third embodiment can circulate water used for water flow entangling to perform water flow entangling because the deterioration of the water used for water flow entangling due to the generation of foam can be reduced. Therefore, water flow entangling can be smoothly performed, and the texture of the spunlace nonwoven fabric can be improved.

[0122] (3-2) Furthermore, when the fiber to which the treatment agent is imparted is subjected to a drying process under appropriate conditions, a high-temperature condition of, for example, 100°C or higher can be employed. According to this configuration, the drying process can be completed in a short time, and thus the manufacturing efficiency of the spunlace nonwoven fabric can be improved.

[0123] The above-described embodiments can be changed as follows. The above-described embodiments and the following changed examples can be implemented in combination with each other within a range in which there is no technical contradiction.

[0124] The method of preparing the diluent of the treatment agent according to the above-described embodiments is not particularly limited and can employ a method other than the method described in the description of the third embodiment.

[0125] • In a range not impairing the effects of the present application, the treatment agent, the composition, or the diluent of each of the above embodiments can further be mixed with other components for maintaining the quality of the treatment agent, the composition, or the diluent, such as other solvents, stabilizing agents, antistatic agents, linking agents, antioxidants, ultraviolet absorbers, organic acids, surfactants other than the above, and the like, which are generally used in treatment agents and the like. Among them, from the viewpoint of effectively exerting the effects of the present application, the other components generally used in treatment agents other than solvents are preferably 50% by mass or less in each of the treatment agents.

[0126] Examples

[0127] The following examples and comparative examples are given to more specifically illustrate the constitution and effects of the present application, but the present application is not limited to these examples. In the following description of the examples and comparative examples, parts represent mass parts, and % represents mass % unless otherwise specified.

[0128] Test Category 1 (Preparation of 1-dose treatment agent)

[0129] (Example 1)

[0130] A treatment agent of Example 1 was prepared, which contained, as the nonionic surfactant (X), ether monoester derivative (A) (compound (A-1) obtained by adding 10 moles of ethylene oxide to 1 mole of stearic acid) 23 parts (%) and ether diester derivative (B) (compound (B-1) obtained by adding 14 moles of ethylene oxide to 1 mole of oleic acid and then adding 1 mole of oleic acid) 27 parts (%) as shown in Table 1, as the anionic surfactant (C), potassium lauryl phosphate (C-1) 10 parts (%), as the fatty acid (D), beef tallow (D-1) 2 parts (%), as the polyhydric alcohol (E), ethylene glycol (E-1) 36 parts (%), and as the lubricant (F), stearyl stearate (F-1) 2 parts (%).

[0131] (Examples 2 to 32, Comparative Examples 1 to 11)

[0132] The treatment agents of Examples 2 to 32 and Comparative Examples 1 to 11 were prepared in the same manner as the treatment agent of Example 1, which contained the ionic surfactant (X), the anionic surfactant (C), the fatty acid (D), the polyhydric alcohol (E), and the lubricant (F) in the proportions shown in Table 1.

[0133] The kind and content of the nonionic surfactant (X), the kind and content of the anionic surfactant (C), the kind and content of the fatty acid (D), the kind and content of the polyol (E), and the kind and content of the lubricant (F) are shown in the "nonionic surfactant (X)" column, the "anionic surfactant (C)" column, the "fatty acid (D)" column, the "polyol (E)" column, and the "lubricant (F)" column of Table 1, respectively. Among them, the content of the other nonionic surfactant (G) is shown as the compounding amount (parts) when the total of the content of the ether monoester derivative (A), the ether diester derivative (B), the anionic surfactant (C), the fatty acid (D), the polyol (E), and the lubricant (F) in the treatment agent is set to 100 parts.

[0134] [Table 1]

[0135]

[0136] [Table 2]

[0137]

[0138] The nonionic surfactant (X), the anionic surfactant (C), the fatty acid (D), the polyol (E), and the lubricant (F) described in Table 1 are described in detail as follows.

[0139] <Nonionic surfactant (X)>

[0140] (Ether monoester derivative (A))

[0141] A-1: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of stearic acid

[0142] A-2: Compound obtained by adding 5 moles of ethylene oxide to 1 mole of stearic acid

[0143] A-3: Compound obtained by adding 20 moles of ethylene oxide to 1 mole of oleic acid

[0144] A-4: Compound obtained by adding 13 moles of ethylene oxide to 1 mole of oleic acid

[0145] A-5: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of oleic acid

[0146] A-6: Compound obtained by adding 5 moles of ethylene oxide to 1 mole of oleic acid

[0147] A-7: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of palmitic acid

[0148] A-8: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of lauric acid

[0149] A-9: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of coconut fatty acid

[0150] A-10: Compound obtained by adding 20 moles of propylene oxide to 1 mole of oleic acid

[0151] A-11: Compound obtained by adding 10 moles of propylene oxide to 1 mole of oleic acid

[0152] A-12: Compound obtained by adding 5 moles of propylene oxide to 1 mole of stearic acid

[0153] A-13: Compound obtained by randomly adding 5 moles of ethylene oxide and 10 moles of propylene oxide to 1 mole of stearic acid

[0154] A-14: Compound obtained by randomly adding 10 moles of ethylene oxide and 5 moles of propylene oxide to 1 mole of stearic acid

[0155] A-15: Compound obtained by adding 5 moles of ethylene oxide and then adding 10 moles of propylene oxide to 1 mole of stearic acid

[0156] A-16: Compound obtained by adding 10 moles of ethylene oxide and then adding 5 moles of propylene oxide to 1 mole of stearic acid

[0157] rA-17: Compound obtained by adding 40 moles of ethylene oxide to 1 mole of stearic acid rA-18: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of wax acid wherein rA-17 and rA-18 are compounds similar to ether monoester derivative (A).

[0158] (Ether diester derivative (B))

[0159] B-1: Compound obtained by adding 14 moles of ethylene oxide and then adding 1 mole of oleic acid to 1 mole of oleic acid

[0160] B-2: Compound obtained by adding 23 moles of ethylene oxide and then adding 1 mole of stearic acid to 1 mole of stearic acid

[0161] B-3: Compound obtained by adding 9 moles of ethylene oxide and then adding 1 mole of stearic acid to 1 mole of stearic acid

[0162] B-4: Compound obtained by adding 5 moles of ethylene oxide and then adding 1 mole of stearic acid to 1 mole of stearic acid

[0163] B-5: Compound obtained by adding 9 moles of ethylene oxide and then adding 1 mole of lauric acid to 1 mole of lauric acid

[0164] B-6: Compound obtained by adding 9 moles of propylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid thereto

[0165] B-7: Compound obtained by adding 5 moles of propylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid thereto

[0166] B-8: Compound obtained by randomly adding 5 moles of ethylene oxide and 10 moles of propylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid thereto

[0167] B-9: Compound obtained by randomly adding 10 moles of ethylene oxide and 5 moles of propylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid thereto

[0168] B-10: Compound obtained by adding 5 moles of ethylene oxide to 1 mole of stearic acid, then adding 10 moles of propylene oxide thereto, and further adding 1 mole of stearic acid thereto

[0169] B-11: Compound obtained by adding 10 moles of ethylene oxide to 1 mole of stearic acid, then adding 5 moles of propylene oxide thereto, and further adding 1 mole of stearic acid thereto

[0170] rB-12: Compound obtained by adding 9 moles of ethylene oxide to 1 mole of wax acid and then adding 1 mole of wax acid thereto

[0171] rB-13: Compound obtained by adding 40 moles of ethylene oxide to 1 mole of stearic acid and then adding 1 mole of stearic acid thereto

[0172] Among them, rB-12 and rB-13 are compounds similar to ether diester derivatives (B).

[0173] (Other nonionic surfactants (G))

[0174] G-1: Polyoxyethylene (n = 5: indicates the number of moles of ethylene oxide added (the same below)) stearyl ether

[0175] G-2: Polyoxyethylene (n = 9) lauryl ether G-3: Polyoxyethylene (n = 20) sorbitan monostearate G-4: Polyoxyethylene (n = 18) sorbitan monostearate G-5: Polyoxyethylene (n = 20) sorbitan tristearate

[0176] C-1: Potassium lauryl phosphate

[0177] C-2: Sodium dioctyl sulfosuccinate

[0178] C-3: Sodium tallow sulfate

[0179] C-4: Sodium oleate

[0180] C-5: Potassium oleate

[0181] C-6: Potassium stearate

[0182] C-7: Potassium laurate

[0183] C-8: Potassium octanoate

[0184] C-9: Sodium lauryl sulfonate C-10: Sodium tetradecyl sulfate

[0185] D-1: Tallow

[0186] D-2: Stearic acid

[0187] D-3: Oleic acid

[0188] D-4: Palmitic acid

[0189] D-5: Lauric acid

[0190] D-6: Coconut fatty acid

[0191] D-7: Behenic acid

[0192] D-8: Castor oil

[0193] D-9: Hydrogenated castor oil

[0194] D-10: Palm oil

[0195] D-11: Hydrogenated palm oil

[0196] D-12: Rosin oil D-13: Coconut oil

[0197] E-1: Ethylene glycol

[0198] E-2: Diethylene glycol

[0199] E-3: Propylene glycol

[0200] E-4: Glycerol

[0201] E-5: Polyethylene glycol (mass average molecular weight 200)

[0202] E-6: Polyethylene glycol (mass average molecular weight 400)

[0203] E-7: Polyethylene glycol (mass average molecular weight 600)

[0204] E-8: Polyethylene glycol (mass average molecular weight 2000)

[0205] E-9: Polypropylene glycol (mass average molecular weight 400)

[0206] < Lubricant (F) >

[0207] F-1: Stearyl Stearate

[0208] F-2: Mineral oil (Kinematic viscosity (40°C): 90 mm 2 / s)

[0209] F-3: Mineral oil (Kinematic viscosity (40°C): 15 mm 2 / s)

[0210] F-4: Dimethyl silicone (Kinematic viscosity (25°C): 10 mm 2 / s)

[0211] F-5: Sorbitan monostearate

[0212] wherein the mass average molecular weight is determined by gel permeation chromatography.

[0213] Test Category 2 (Attachment of the treating agent to rayon fibers)

[0214] Each of the treating agents prepared in Test Category 1 was diluted with ion exchange water to prepare a 0.15% treating agent diluent. The treating agent diluent was attached to rayon fibers having a fineness of 1.3 x 10 -4 g / m and a fiber length of 38 mm by a spray application method so that the attachment amount became 0.15%. Subsequently, the rayon fibers were dried for 2 hours in a hot air drier at 80°C or for 1 hour in a hot air drier at 120°C, and then conditioned at 25°C x 40% RH for one night to obtain rayon fibers to which the treating agent was attached.

[0215] Test Category 3 (Bubbling-off test)

[0216] The rayon fibers to which the treating agent was attached in Test Category 2, 15 g, were immersed in 150 g of ion exchange water for 2 hours. Then, the immersed fibers were taken out and the treated pulp was pressed using a hand-operated juicer. The pressed liquid, 10 mL, was poured into a 25 mL graduated cylinder and capped, and agitated vigorously at a rate of 30 times (amplitude 30 cm) for 10 seconds. After standing for 5 minutes, the height from the water surface to the upper surface of the foam was measured, and the bubbling-off was evaluated using the following criteria. The results are shown in the "Bubbling-off test" column of Table 2.

[0217] Evaluation Criteria for Bubbling-off Test

[0218] ◎◎ (Excellent): Height from the water surface to the upper surface of the foam was less than 1 mm

[0219] ◎ (Good): Height from the water surface to the upper surface of the foam was 1 mm or more and less than 1.5 mm

[0220] O (Pass): height from water surface to upper surface of foam is 1.5 mm or more and less than 4 mm

[0221] X (Fail): height from water surface to upper surface of foam is 4 mm or more

[0222] Test Category 4 (Emulsion Stability)

[0223] To 5 parts by mass of each of the treatment agent prepared in Test Category 1, 95 parts by mass of ion exchange water was added, and a diluted solution of the treatment agent containing 5 parts by mass of the treatment agent was prepared by stirring at 50°C. 100 mL of the prepared diluted solution of the treatment agent was put into a 100 mL carrot-type sedimentation bottle. After standing at 20°C for 24 hours, the amount of sedimentation was confirmed, and the emulsion stability was evaluated using the following evaluation criteria. The results are shown in the "Emulsion Stability" column of Table 2.

[0224] Evaluation Criteria for Emulsion Stability

[0225] X (Fail): amount of sedimentation is 1 mL or more

[0226] O (Pass): amount of sedimentation is 0.5 mL or more and less than 1 mL

[0227] O (Pass): amount of sedimentation is 0.5 mL or more and less than 1 mL

[0228] X (Fail): amount of sedimentation is 1 mL or more

[0229] Test Category 5 (Carding Property)

[0230] The rayon fiber to which each of the treatment agents prepared in Test Category 1 was attached was left to be conditioned at 20°C, 65% RH for 24 hours in a constant-temperature room, and then was sent to a micro carding machine. The proportion of the amount of discharge to the amount of input was calculated as the carding textile rate (%) using the following formula (1), and the carding property was evaluated using the following evaluation criteria. The results are shown in the "Carding Property" column of Table 2.

[0231] [Formula 1]

[0232]

[0233] Evaluation Criteria for Carding Property

[0234] X (Fail): carding textile rate is less than 80%

[0235] O (Pass): carding textile rate is 80% or more and less than 85%

[0236] O (Pass): carding textile rate is 80% or more and less than 85%

[0237] X (Fail): carding textile rate is less than 80%

[0238] Test Category 6 (Preparation of a composition containing the 1sttreatment agent of a 2-dosage form treatment agent)

[0239] (Composition containing the 1sttreatment agent (I-1))

[0240] A composition containing the 1sttreatment agent (I-1) was prepared, which contained an ether monoester derivative (A) (compound (A-1) which is a compound of 10 moles of ethylene oxide added to 1 mole of stearic acid) 20% and an ether diester derivative (B) (compound (B-1) which is a compound of 14 moles of ethylene oxide added to 1 mole of oleic acid, and then 1 mole of oleic acid added) 23%, as nonionic surfactant (X), as shown in Table 3, beef tallow (D-1) 2%, as fatty acid (D), stearyl stearate (F-1) 2%, as lubricant (F), and water 53%, as solvent (S).

[0241] (Composition containing the 1sttreatment agent (I-2) to (I-28))

[0242] A composition containing the 1sttreatment agent (I-1) was prepared, which contained an ether monoester derivative (A) (compound (A-1) which is a compound of 10 moles of ethylene oxide added to 1 mole of stearic acid) 20% and an ether diester derivative (B) (compound (B-1) which is a compound of 14 moles of ethylene oxide added to 1 mole of oleic acid, and then 1 mole of oleic acid added) 23%, as nonionic surfactant (X), as shown in Table 3, beef tallow (D-1) 2%, as fatty acid (D), stearyl stearate (F-1) 2%, as lubricant (F), and water 53%, as solvent (S).

[0243] The kind and content of nonionic surfactant (X), the kind and content of fatty acid (D), the kind and content of lubricant (F), and the kind and content of solvent (S) are shown in the column of "nonionic surfactant (X)", the column of "fatty acid (D)", the column of "lubricant (F)", and the column of "solvent (S)" of Table 3, respectively.

[0244] [Table 3]

[0245]

[0246] Test Category 7 (Preparation of a composition containing the 2ndtreatment agent of a 2-dosage form treatment agent)

[0247] (Composition containing the 2ndtreatment agent (II-1))

[0248] A composition containing the 2ndtreatment agent (II-1) was prepared, which contained potassium lauryl phosphate (C-1) 9%, as anionic surfactant (C), ethylene glycol (E-1) 31%, as polyhydric alcohol (E), and water 60%, as solvent (S), as shown in Table 4.

[0249] (Composition containing the 2ndtreatment agent (II-2) to (II-28))

[0250] The composition containing the first treatment agent, the composition containing the second treatment agent, and the composition containing the third treatment agent were prepared in the same manner as the composition (I-1) containing the first treatment agent.

[0251] The kind and content of the anionic surfactant (C), the kind and content of the polyol (E), and the kind and content of the solvent (S) are shown in the "anionic surfactant (C)" column, the "polyol (E)" column, and the "solvent (S)" column of Table 4, respectively.

[0252] [Table 4]

[0253]

[0254] Test Category 8 (Evaluation of Formulation Stability)

[0255] The composition containing the first treatment agent, the composition containing the second treatment agent, and the composition containing the third treatment agent were prepared in the same manner as the composition (I-1) containing the first treatment agent.

[0256] Evaluation Criteria for Formulation Stability (Composition Containing the First Treatment Agent and Composition Containing the Second Treatment Agent)

[0257] ◎ (Pass): No separation

[0258] × (Not passable): Separation

[0259] Test Category 9 (Preparation of the Composition Containing the Treatment Agent Composed of the Composition Containing the First Treatment Agent and the Composition Containing the Second Treatment Agent)

[0260] (Example 33)

[0261] As shown in Table 5, the composition containing the first treatment agent (I-1) 50% (parts) and the composition containing the second treatment agent (II-1) 50% (parts) were mixed to prepare the composition containing the treatment agent of Example 33.

[0262] (Examples 34 to 60)

[0263] As shown in Table 5, the composition containing the first treatment agent (I-1) 50% (parts) and the composition containing the second treatment agent (II-1) 50% (parts) were mixed to prepare the composition containing the treatment agent of Example 33.

[0264] The kind and mass ratio of the composition containing the first treatment agent, the kind and mass ratio of the composition containing the second treatment agent are shown in the "composition containing the first treatment agent" column and the "composition containing the second treatment agent" column of Table 5, respectively.

[0265] [Table 5]

[0266]

[0267] Test category 10 (evaluation of the treatment agent-containing composition of 2 formulations)

[0268] Using the obtained treatment agent-containing composition of each example, evaluation was performed for the shedding foaming test, emulsion stability, and carding property in the same manner as in Example 1. The results are shown in the "shedding foaming test" column, the "emulsion stability" column, and the "carding property" column of Table 5, respectively.

[0269] As is clear from the evaluation results of each example with respect to the comparative example in each table, the treatment agent of the present application can reduce the deterioration of the shedding foaming of water in the hydroentangling step using the fiber to which the treatment agent is imparted. In addition, the emulsion stability of the diluent of the treatment agent can be improved. Furthermore, the carding property at the time of carding passage using the fiber to which the treatment agent is imparted can be improved.

[0270] The present disclosure also includes the following modes.

[0271] (Appendix 1)

[0272] A treatment agent for artificial silk hydroentanglement, characterized by,

[0273] containing a nonionic surfactant (X),

[0274] The nonionic surfactant (X) described above contains an ether monoester derivative (A) described below and an ether diester derivative (B) described below;

[0275] Ether monoester derivative (A): a compound obtained by adding a total of 1 mole or more and 30 moles or less of an alkylene oxide having 2 or less carbon atoms to 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms;

[0276] Ether diester derivative (B): a compound obtained by esterifying a compound obtained by adding a total of 1 mole or more and 30 moles or less of an alkylene oxide having 2 or less carbon atoms to 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms with 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms.

[0277] (Appendix 2)

[0278] The treatment agent for artificial silk hydroentanglement described in Appendix 1, wherein,

[0279] When the total of the contained proportions of the ether monoester derivative (A) described above and the ether diester derivative (B) described above is taken as 100 parts by mass, the ether monoester derivative (A) described above is contained in an amount of 10 parts by mass or more and 90 parts by mass or less, and the ether diester derivative (B) described above is contained in an amount of 10 parts by mass or more and 90 parts by mass or less.

[0280] (Attachment 3)

[0281] The rayon treatment agent for water jetting described in Attachment 1, wherein

[0282] The above-described rayon treatment agent for water jetting further contains an anionic surfactant (C).

[0283] (Attachment 4)

[0284] The rayon treatment agent for water jetting described in Attachment 1, wherein

[0285] The above-described rayon treatment agent for water jetting further contains an anionic surfactant (C),

[0286] When the total of the containing proportions of the above-described ether monoester derivative (A), the above-described ether diester derivative (B), and the above-described anionic surfactant (C) is set to 100 parts by mass, the ether monoester derivative (A) is contained in 10 parts by mass or more and 85 parts by mass or less, the ether diester derivative (B) is contained in 10 parts by mass or more and 85 parts by mass or less, and the anionic surfactant (C) is contained in 0.1 parts by mass or more and 20 parts by mass or less.

[0287] (Attachment 5)

[0288] The rayon treatment agent for water jetting described in Attachment 1, wherein

[0289] The above-described rayon treatment agent for water jetting further contains a fatty acid (D) described below;

[0290] The fatty acid (D) is at least one selected from a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat.

[0291] (Attachment 6)

[0292] The rayon treatment agent for water jetting described in Attachment 1, wherein

[0293] The above-described rayon treatment agent for water jetting further contains an anionic surfactant (C) and a fatty acid (D) described below,

[0294] When the total of the containing proportions of the above-described ether monoester derivative (A), the above-described ether diester derivative (B), the above-described anionic surfactant (C), and the above-described fatty acid (D) is set to 100 parts by mass, the ether monoester derivative (A) is contained in 10 parts by mass or more and 85 parts by mass or less, the ether diester derivative (B) is contained in 10 parts by mass or more and 85 parts by mass or less, the anionic surfactant (C) is contained in 0.1 parts by mass or more and 20 parts by mass or less, and the fatty acid (D) is contained in 0.1 parts by mass or more and 10 parts by mass or less.

[0295] Fatty acid (D): at least one selected from the group consisting of a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat.

[0296] (Attachment 7)

[0297] The rayon treatment agent for water jetting according to the above-mentioned attachment 1, wherein

[0298] The above-mentioned rayon treatment agent for water jetting further contains a polyol (E).

[0299] (Attachment 8)

[0300] The rayon treatment agent for water jetting according to the above-mentioned attachment 1, wherein

[0301] The above-mentioned rayon treatment agent for water jetting further contains an anionic surfactant (C), a fatty acid (D) described below, and a polyol (E).

[0302] When the total of the containing ratios of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), the above-mentioned fatty acid (D), and the above-mentioned polyol (E) is set to 100 parts by mass, the ether monoester derivative (A) is contained in 10 parts by mass or more and 85 parts by mass or less, the ether diester derivative (B) is contained in 10 parts by mass or more and 85 parts by mass or less, the anionic surfactant (C) is contained in 0.1 parts by mass or more and 20 parts by mass or less, the fatty acid (D) is contained in 0.1 parts by mass or more and 10 parts by mass or less, and the polyol (E) is contained in 0.1 parts by mass or more and 70 parts by mass or less;

[0303] Fatty acid (D): at least one selected from the group consisting of a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat.

[0304] (Attachment 9)

[0305] The rayon treatment agent for water jetting according to the above-mentioned attachment 1, wherein

[0306] The above-mentioned rayon treatment agent for water jetting further contains a lubricant (F) described below;

[0307] Lubricant (F): at least one selected from the group consisting of a hydrocarbon, an ester excluding an oil and fat, and a silicone.

[0308] (Attachment 10)

[0309] The rayon treatment agent for water jetting according to the above-mentioned attachment 1, wherein

[0310] The above-mentioned rayon treatment agent for water jetting further contains an anionic surfactant (C), a fatty acid (D) described below, a polyol (E), and a lubricant (F) described below.

[0311] When the total of the containing proportions of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), the above-mentioned fatty acid (D), the above-mentioned polyhydric alcohol (E), and the above-mentioned lubricant (F) is made to be 100 parts by mass, the above-mentioned ether monoester derivative (A) is contained in 10 parts by mass or more and 85 parts by mass or less, the above-mentioned ether diester derivative (B) is contained in 10 parts by mass or more and 85 parts by mass or less, the above-mentioned anionic surfactant (C) is contained in 0.1 parts by mass or more and 20 parts by mass or less, the above-mentioned fatty acid (D) is contained in 0.1 parts by mass or more and 10 parts by mass or less, the above-mentioned polyhydric alcohol (E) is contained in 0.1 parts by mass or more and 70 parts by mass or less, and the above-mentioned lubricant (F) is contained in 1 part by mass or more and 20 parts by mass or less;

[0312] the fatty acid (D) is at least one selected from the group consisting of a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat;

[0313] the lubricant (F) is at least one selected from the group consisting of a hydrocarbon, an ester other than an oil and fat, and a silicone.

[0314] (A) an ether monoester derivative,

[0315] (A) an ether monoester derivative,

[0316] (A) an ether monoester derivative,

[0317] the above-mentioned ether monoester derivative (A) and the above-mentioned ether diester derivative (B), and further optionally contains the following fatty acid (D) and optionally contains the following lubricant (F),

[0318] the above-mentioned ether monoester derivative (A) and the above-mentioned ether diester derivative (B), and further optionally contains the following fatty acid (D) and optionally contains the following lubricant (F),

[0319] the fatty acid (D) is at least one selected from the group consisting of a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat;

[0320] the lubricant (F) is at least one selected from the group consisting of a hydrocarbon, an ester other than an oil and fat, and a silicone.

[0321] (B) an ether diester derivative,

[0322] A composition containing a treatment agent for spun rayon hydroentanglement, characterized in that,

[0323] contains the treatment agent for spun rayon hydroentanglement described in any one of Appendices 1 to 11, and the following solvent (S),

[0324] When the total of the proportion of the above-mentioned artificial silk water jet treatment agent and the proportion of the above-mentioned solvent (S) is 100 parts by mass, the above-mentioned artificial silk water jet treatment agent is contained in an amount of 10 parts by mass or more and 99.99 parts by mass or less, and the above-mentioned solvent (S) is contained in an amount of 0.01 parts by mass or more and 90 parts by mass or less;

[0325] The solvent (S) is a solvent having a boiling point of 105°C or lower at atmospheric pressure.

[0326] (Attachment 13)

[0327] The composition containing the artificial silk water jet treatment agent according to Attachment 12, wherein

[0328] The above-mentioned solvent (S) is water.

[0329] (Attachment 14)

[0330] An artificial silk water jet 1st treatment agent characterized in that

[0331] The above-mentioned artificial silk water jet 1st treatment agent is used in combination with an artificial silk water jet 2nd treatment agent or a composition containing the artificial silk water jet 2nd treatment agent,

[0332] The above-mentioned artificial silk water jet 2nd treatment agent contains at least one selected from an anionic surfactant (C) and a polyol (E),

[0333] The above-mentioned composition containing the artificial silk water jet 2nd treatment agent contains the above-mentioned artificial silk water jet 2nd treatment agent and the following solvent (S),

[0334] contains the following ether monoester derivative (A) and the following ether diester derivative (B), and further optionally contains the following fatty acid (D), and optionally contains the following lubricant (F);

[0335] The ether monoester derivative (A) is a compound in which 1 mole or more and 30 moles or less of an alkylene oxide having 2 or less carbon atoms is added to 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms;

[0336] The ether diester derivative (B) is a compound in which 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms is esterified with a compound in which 1 mole or more and 30 moles or less of an alkylene oxide having 2 or less carbon atoms is added to 1 mole of a fatty acid having 12 or more and 24 or less carbon atoms;

[0337] The fatty acid (D) is at least one selected from a fatty acid having 12 or more and 24 or less carbon atoms and an oil and fat;

[0338] Lubricant (F): at least one selected from the group consisting of hydrocarbons, esters excluding fats and oils, and silicones;

[0339] Solvent (S): a solvent having a boiling point of 105°C or lower at atmospheric pressure.

[0340] (Appendix 15)

[0341] A composition containing a first treatment agent for spunlace of rayon, characterized in that,

[0342] contains the first treatment agent for spunlace of rayon described in Appendix 14, and the following solvent (S);

[0343] Solvent (S): a solvent having a boiling point of 105°C or lower at atmospheric pressure.

[0344] (Appendix 16)

[0345] A method for producing a spunlace nonwoven fabric, characterized in that,

[0346] by the following steps 1 to 3,

[0347] Step 1: attaching the treatment agent for spunlace of rayon described in any one of Appendices 1 to 11 to rayon;

[0348] Step 2: using the rayon obtained in Step 1 for a carding process, thereby producing a carded web;

[0349] Step 3: entangling the carded web obtained in Step 2 with a water stream to obtain a spunlace nonwoven fabric.

Claims

1. A treatment agent for hydroentangling rayon, characterized in that, It contains a nonionic surfactant (X) and the following fatty acids (D). The above-mentioned nonionic surfactant (X) includes the following ether monoester derivative (A) and the following ether diester derivative (B). Ether monoester derivative (A): A compound formed by adding 1 mole of fatty acids having 12 or more and 24 carbon atoms to a total of 1 mole or more and 30 moles of epoxides having 2 or more and 3 carbon atoms. Ether diester derivatives (B): Compounds formed by esterification of a compound consisting of 1 mole of an epoxide having 2 to 30 moles of 2 to 1 mole of a fatty acid having 12 to 24 carbon atoms with 1 mole of an epoxide having 2 to 3 carbon atoms, excluding polyethylene glycol dilaurate. Fatty acids (D): selected from at least one of fatty acids and fats having 12 or more but less than 24 carbon atoms. In the above-mentioned rayon hydroentangling treatment agent, the content of ether monoester derivative (A) is more than 5% by mass and less than 95% by mass, the content of ether diester derivative (B) is more than 5% by mass and less than 95% by mass, and the content of fatty acid (D) is more than 0.1% by mass and less than 15% by mass.

2. The rayon hydroentangling treatment agent as described in claim 1, wherein, When the total proportion of the above-mentioned ether monoester derivative (A) and the above-mentioned ether diester derivative (B) is set to 100 parts by mass, the content is 10 or more parts by mass and 90 or less parts by mass of the above-mentioned ether monoester derivative (A) and 10 or more parts by mass and 90 or less parts by mass of the above-mentioned ether diester derivative (B).

3. The rayon hydroentangling treatment agent as described in claim 1, wherein, The aforementioned rayon hydroentangling treatment agent further contains anionic surfactant (C).

4. The rayon hydroentangling treatment agent as described in claim 1, wherein, The aforementioned rayon hydroentangling treatment agent further contains anionic surfactant (C). When the total proportion of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), and the above-mentioned anionic surfactant (C) is set to 100 parts by mass, the content includes 10 or more and 85 or less of the above-mentioned ether monoester derivative (A), 10 or more and 85 or less of the above-mentioned ether diester derivative (B), and 0.1 or more and 20 or less of the above-mentioned anionic surfactant (C).

5. The rayon hydroentangling treatment agent as described in claim 1, wherein, The aforementioned rayon hydroentangling treatment agent further contains anionic surfactant (C). When the total proportion of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), and the above-mentioned fatty acid (D) is set to 100 parts by mass, the content includes 10 or more and 85 or less of the above-mentioned ether monoester derivative (A), 10 or more and 85 or less of the above-mentioned ether diester derivative (B), 0.1 or more and 20 or less of the above-mentioned anionic surfactant (C), and 0.1 or more and 10 or less of the above-mentioned fatty acid (D).

6. The rayon hydroentangling treatment agent as described in claim 1, wherein, The aforementioned rayon hydroentangling treatment agent further contains anionic surfactant (C) and polyol (E) excluding esters. When the total proportion of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), the above-mentioned fatty acid (D), and the above-mentioned polyol (E) is set to 100 parts by mass, the content of the above-mentioned ether monoester derivative (A) is 10 parts by mass and 85 parts by mass, the content of the above-mentioned ether diester derivative (B) is 10 parts by mass and 85 parts by mass, the content of the above-mentioned anionic surfactant (C) is 0.1 parts by mass and 20 parts by mass, the content of the above-mentioned fatty acid (D) is 0.1 parts by mass and 10 parts by mass, and the content of the above-mentioned polyol (E) is 0.1 parts by mass and 70 parts by mass.

7. The rayon hydroentangling treatment agent as described in claim 1, wherein, The aforementioned rayon hydroentangling treatment agent further contains the following lubricant (F). Lubricant (F): selected from at least one of hydrocarbons, esters excluding greases, and silicones.

8. The rayon hydroentangling treatment agent as described in claim 1, wherein, The aforementioned rayon hydroentangling treatment agent further contains anionic surfactant (C), polyol (E) excluding esters, and the following lubricant (F). When the total proportions of the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), the above-mentioned anionic surfactant (C), the above-mentioned fatty acid (D), the above-mentioned polyol (E), and the above-mentioned lubricant (F) are set to 100 parts by mass, the content of the above-mentioned ether monoester derivative (A) is 10 parts by mass and 85 parts by mass, the above-mentioned ether diester derivative (B) is 10 parts by mass and 85 parts by mass, the above-mentioned anionic surfactant (C) is 0.1 parts by mass and 20 parts by mass, the above-mentioned fatty acid (D) is 0.1 parts by mass and 10 parts by mass, the above-mentioned polyol (E) is 0.1 parts by mass and 70 parts by mass, and the above-mentioned lubricant (F) is 1 part by mass and 20 parts by mass. Lubricant (F): selected from at least one of hydrocarbons, esters excluding greases, and silicones.

9. The rayon hydroentangling treatment agent as described in claim 1, wherein, It is composed of a first treatment agent for spunlace rayon and a second treatment agent for spunlace rayon. The first treatment agent for rayon hydroentangling mentioned above contains the above-mentioned ether monoester derivative (A), the above-mentioned ether diester derivative (B), and the above-mentioned fatty acid (D), and further optionally contains the following lubricant (F). The aforementioned second treatment agent for spunlace rayon contains at least one selected from anionic surfactants (C) and polyols (E) excluding esters. Lubricant (F): selected from at least one of hydrocarbons, esters excluding greases, and silicones.

10. A treatment agent for hydroentangling rayon, characterized in that, It contains a nonionic surfactant (X) and a polyol (E) excluding esters. The above-mentioned nonionic surfactant (X) includes the following ether monoester derivative (A) and the following ether diester derivative (B). Ether monoester derivative (A): A compound formed by adding 1 mole of fatty acids having 12 or more and 24 carbon atoms to a total of 1 mole or more and 30 moles of epoxides having 2 or more and 3 carbon atoms. Ether diester derivatives (B): Compounds formed by esterification of a compound consisting of 1 mole of an epoxide having 2 to 30 moles of 2 to 1 mole of a fatty acid having 12 to 24 carbon atoms with 1 mole of an epoxide having 2 to 3 carbon atoms, excluding polyethylene glycol dilaurate. In the above-mentioned rayon hydroentangling treatment agent, the content of ether monoester derivative (A) is more than 5% by mass and less than 95% by mass, the content of ether diester derivative (B) is more than 5% by mass and less than 95% by mass, and the content of polyol (E) excluding ester is more than 0.1% by mass and less than 70% by mass.

11. A composition containing a rayon hydroentangling treatment agent, characterized in that, It contains the rayon hydroentangling treatment agent according to any one of claims 1 to 10, and the solvent (S) described below. When the total proportion of the above-mentioned rayon hydroentangling treatment agent and the above-mentioned solvent (S) is set to 100 parts by mass, the content is 10 parts by mass or more and 99.99 parts by mass or less of the above-mentioned rayon hydroentangling treatment agent and 0.01 parts by mass or more and 90 parts by mass or less of the above-mentioned solvent (S). Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

12. The composition containing a rayon hydroentangling treatment agent as described in claim 11, wherein, The solvent (S) mentioned above is water.

13. A first treatment agent for rayon hydroentangling, characterized in that, The above-mentioned first treatment agent for spunlace rayon is used in combination with a second treatment agent for spunlace rayon or a composition containing the second treatment agent for spunlace rayon. The aforementioned second treatment agent for spunlace rayon contains at least one selected from anionic surfactants (C) and polyols (E) excluding esters. The above-mentioned composition containing the second treatment agent for spunlace rayon contains the above-mentioned second treatment agent for spunlace rayon and the solvent (S) described below. The first treatment agent for rayon hydroentangling mentioned above contains the following ether monoester derivative (A), the following ether diester derivative (B), and the following fatty acid (D), and further optionally contains the following lubricant (F). Ether monoester derivative (A): A compound formed by adding 1 mole of fatty acids having 12 or more and 24 carbon atoms to a total of 1 mole or more and 30 moles of epoxides having 2 or more and 3 carbon atoms. Ether diester derivatives (B): Compounds formed by esterification of a compound consisting of 1 mole of an epoxide having 2 to 30 moles of 2 to 1 mole of a fatty acid having 12 to 24 carbon atoms with 1 mole of an epoxide having 2 to 3 carbon atoms, excluding polyethylene glycol dilaurate. Fatty acids (D): selected from at least one of fatty acids and fats having 12 or more but less than 24 carbon atoms. Lubricant (F): selected from at least one of hydrocarbons, esters excluding greases, and silicones. Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure. In the above-mentioned rayon hydroentangling treatment agent, the content of ether monoester derivative (A) is more than 5% by mass and less than 95% by mass, the content of ether diester derivative (B) is more than 5% by mass and less than 95% by mass, the content of fatty acid (D) is more than 0.1% by mass and less than 15% by mass, and the content of lubricant (F) is more than 0.5% by mass and less than 25% by mass.

14. A composition containing a first treatment agent for rayon hydroentangling, characterized in that... ， It contains the first treatment agent for rayon hydroentangling as described in claim 13, and the solvent (S) described below. When the total proportion of the first treatment agent for spunlace rayon and the solvent (S) is set to 100 parts by mass, the first treatment agent for spunlace rayon contains 27 parts by mass and 99 parts by mass and 1 part by mass and 73 parts by mass of the solvent (S). Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

15. A method for manufacturing a spunlace nonwoven fabric, characterized in that, Through the following steps 1 to 3 Step 1: Apply the rayon hydroentangling treatment agent according to any one of claims 1 to 10 to the rayon. Step 2: Use the rayon obtained in Step 1 in the carding process to manufacture a carding web. Step 3: The carding web obtained in Step 2 is interwoven with water to obtain spunlace nonwoven fabric.

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