Permeability-imparting agents, nonwoven fabric manufacturing treatment agents, and their applications

Abstract

To provide a water permeability agent and a nonwoven fabric manufacturing treatment agent that exhibit excellent foam suppression properties. [Solution] A water permeability imparting agent comprising compound (A) and compound (B), and at least one selected from compound (C), compound (D), and inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content of the water permeability imparting agent is 0.5 to 450 mg KOH / g, and the ratio of peak areas [P1 / (P1+P2+P3)] of the nonvolatile content of the water permeability imparting agent measured by P-nuclear NMR is 40 to 100%. A nonwoven fabric manufacturing treatment agent comprising compound (A) and compound (B), and at least one selected from compound (C), compound (D), and inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content of the nonwoven fabric manufacturing treatment agent is 0.5 to 450 mg KOH / g, and the ratio of peak areas [P1 / (P1+P2+P3)] of the nonvolatile content of the water permeability imparting agent measured by P-nuclear NMR is 40 to 100%.

Description

[Technical Field]

[0001] This invention relates to a water permeability imparting agent, a treatment agent for nonwoven fabric manufacturing, and its use. [Background technology]

[0002] Generally, absorbent articles such as sanitary products, including disposable diapers and synthetic napkins, often have a three-layer structure: a top sheet made of various nonwoven fabrics primarily composed of fibers containing at least one type of thermoplastic resin (polyolefin fibers, polyester fibers, etc.) to provide water permeability; a back sheet to provide water repellency; and a material consisting of cotton pulp or a superabsorbent polymer placed between the top sheet and the back sheet. Liquids such as urine and bodily fluids pass through the top sheet and are absorbed into the absorbent material, but the top sheet needs to have good water permeability, that is, instantaneous water permeability, meaning that the time it takes for liquid to be completely absorbed from the top sheet into the absorbent material inside is extremely short. To satisfy these required characteristics, for example, it is disclosed that a treatment agent for synthetic fibers described in Patent Document 1 may be used. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-045722 [Overview of the project] [Problems that the invention aims to solve]

[0004] The treatment agent described in Patent Document 1, for example, mainly consists of an alkyl phosphate salt, and is used in combination with nonionic or cationic surfactants. However, there were problems with reduced workability due to foam flow-out during aqueous solution preparation and foam contamination of rollers. Upon investigating the cause of these problems, it was found that treatment agents containing these components are prone to foaming and have high foam stability. Therefore, the object of the present invention is to provide a water permeability agent with excellent foam suppression properties, fibers to which the agent is attached, a nonwoven fabric to which the agent is attached, an absorbent article containing the nonwoven fabric, and a method for producing fibers using the agent. Furthermore, the object of the present invention is to provide a treatment agent for manufacturing nonwoven fabrics that has excellent foam suppression properties, fibers to which the treatment agent is attached, a nonwoven fabric to which the treatment agent is attached, an absorbent article containing the nonwoven fabric, and a method for manufacturing fibers using the treatment agent. [Means for solving the problem]

[0005] As a result of diligent research to solve the above problem, the inventors have found that, in a first embodiment, the problem can be solved if the water permeability imparting agent contains a specific compound (A) and a specific compound (B), and at least one selected from a specific compound (C), a specific compound (D), and inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content of the water permeability imparting agent is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum of the specific peak areas P1 to P3 (P1 + P2 + P3) of the spectrum of the nonvolatile content of the water permeability imparting agent measured by P-nuclear NMR [P1 / (P1+P2+P3)] is 40 to 100%. Furthermore, in a second embodiment, we found that the problem can be solved if the nonwoven fabric manufacturing treatment agent contains a specific compound (A) and a specific compound (B), and at least one selected from a specific compound (C), a specific compound (D), and inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content of the nonwoven fabric manufacturing treatment agent is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum of the specific peak areas P1 to P3 (P1 + P2 + P3) of the spectrum of the nonvolatile content of the nonwoven fabric manufacturing treatment agent measured by P-nuclear NMR [P1 / (P1+P2+P3)] is 40 to 100%.

[0006] In other words, the present invention includes the following embodiments. <1> A water permeability imparting agent comprising a compound (A) represented by the following general formula (1) and a compound (B) represented by the following general formula (2), and containing at least one selected from a compound (C) represented by the following general formula (3), a compound (D) represented by the following general formula (4), and inorganic phosphoric acid (salt) (IN), wherein the acid value of the non-volatile content of the water permeability imparting agent is 0.5 to 450 mgKOH / g, and the ratio of P1 to the sum (P1 + P2 + P3) of the following peak areas P1 to P3 of the spectrum obtained by measuring the non-volatile content of the water permeability imparting agent by 31P NMR is 40 to 100%. P1: Peak area within the range of 0 to 10 ppm P2: Peak area within the range of -25 to -3 ppm P3: Peak area within the range of -3 to 0 ppm

Chemical formula

Chemical formula

Chemical formula

[0007] The water permeability agent of the present invention exhibits excellent foam suppression properties. The nonwoven fabric manufacturing treatment agent of the present invention exhibits excellent foam suppression properties. [Modes for carrying out the invention]

[0008] The permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment each contain compound (A) represented by the above general formula (1) and compound (B) represented by the above general formula (2), and at least one selected from compound (C) represented by the above general formula (3), compound (D) represented by the above general formula (4), and inorganic phosphoric acid (salt) (IN). A detailed explanation follows below.

[0009] [Compound (A)] Compound (A) is the compound represented by the general formula (1) above. In formula (1), R 1 It is a branched hydrocarbon group having 6 to 22 carbon atoms. In terms of instantaneous water permeability, the upper limit of the carbon number is preferably 16, more preferably 14, and still more preferably 12, while the lower limit of the carbon number is preferably 6, more preferably 7, and still more preferably 8. Furthermore, in terms of repeated water permeability, the upper limit of the carbon number is preferably 20, more preferably 18, and still more preferably 16, while the lower limit of the carbon number is preferably 10, more preferably 11, and still more preferably 12. Furthermore, for example, a value of 6 to 16 is preferred in terms of instantaneous water permeability, and a value of 10 to 20 is preferred in terms of repeated water permeability. Examples of hydrocarbon groups include alkyl groups.

[0010] In formula (1), AO is an oxyalkylene group having 2 to 4 carbon atoms. The number of repeating oxyalkylene units, m, is an integer from 0 to 20. In terms of anti-foaming properties, the upper limit of the number of repeats m is preferably 20, more preferably 18, and still more preferably 16, while the lower limit of the number of repeats m is preferably 3, more preferably 5, and still more preferably 7. In terms of instantaneous and repeated water permeability, the upper limit of the number of repeats m is preferably 9, more preferably 8, and still more preferably 7, while the lower limit of the number of repeats m is preferably 0, more preferably 1, and still more preferably 2. Also, for example, in terms of anti-foaming properties, 3 to 20 is preferred, and in terms of instantaneous and repeated water permeability, 0 to 9 is more preferred. (AO)m preferably contains at least one oxyalkylene unit selected from oxyethylene units and oxypropylene units as oxyalkylene units, more preferably contains oxyethylene units, and even more preferably contains 50 mol% or more of oxyethylene units in terms of anti-foaming properties.

[0011] In formula (1), M 1 and M 2 Each of these is independently a hydrogen atom, an alkali metal, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. 1 and M 2 It is preferable that the atom is a hydrogen atom or an alkali metal in terms of emulsification stability and antistatic properties. 1 and M 2 These may be the same or different. Examples of alkali metals include potassium, sodium, and lithium, with potassium or sodium being preferred in terms of emulsification stability and antistatic properties. Examples of organic amines include alkanolamines such as ethanolamine, diethanolamine, and triethanolamine, as well as triethylamine. Examples of quaternary ammonium compounds include alkyltrimethylammonium and dialkyldimethylammonium.

[0012] Specific examples of compound (A) are not particularly limited, but include mono-2-ethylhexyl phosphate, mono-2-ethylhexyl phosphate monopotassium salt, mono-2-ethylhexyl phosphate dipotassium salt, polyoxyethylene 8-mol adducted mono-2-ethylhexyl phosphate, polyoxyethylene 8-mol adducted mono-2-ethylhexyl phosphate monopotassium salt, polyoxyethylene 8-mol adducted mono-2-ethylhexyl phosphate dipotassium salt, monoisolauryl phosphate, monoisolauryl phosphate monopotassium salt, monoisolauryl phosphate dipotassium salt, polyoxyethylene Examples include monoisolauryl phosphate with 9 moles of polyoxyethylene, monoisolauryl phosphate monopotassium salt with 9 moles of polyoxyethylene, monoisolauryl phosphate dipotassium salt with 9 moles of polyoxyethylene, monoisostearyl phosphate, monoisostearyl phosphate monopotassium salt, monoisostearyl phosphate dipotassium salt, monoisostearyl phosphate monopotassium salt with 15 moles of polyoxyethylene, monoisostearyl phosphate monopotassium salt with 15 moles of polyoxyethylene, and monoisostearyl phosphate dipotassium salt with 15 moles of polyoxyethylene. Among these, mono-2-ethylhexyl phosphate monopotassium salt, mono-2-ethylhexyl phosphate dipotassium salt, monoisolauryl phosphate monopotassium salt, monoisostearyl phosphate monopotassium salt, and monoisostearyl phosphate dipotassium salt are preferred in terms of instantaneous and repeated water permeability. Furthermore, in terms of anti-foaming properties, polyoxyethylene 8 molar-added mono-2-ethylhexyl phosphate monopotassium salt, polyoxyethylene 8 molar-added mono-2-ethylhexyl phosphate dipotassium salt, polyoxyethylene 9 molar-added mono-isolauryl phosphate monopotassium salt, polyoxyethylene 9 molar-added mono-isolauryl phosphate dipotassium salt, polyoxyethylene 15 molar-added monoisostearyl phosphate monopotassium salt, and polyoxyethylene 15 molar-added monoisostearyl phosphate dipotassium salt are preferred.

[0013] [Compound (B)] Compound (B) is a compound represented by the above general formula (2). In formula (2), R 2 and R 3 are each independently a hydrocarbon group having 6 to 22 carbon atoms. In terms of instantaneous water permeability, the upper limit of the number of carbon atoms is preferably 16, more preferably 14, still more preferably 12, and the lower limit of the number of carbon atoms is preferably 6, more preferably 7, still more preferably 8. Also, in terms of repeated water permeability, the upper limit of the number of carbon atoms is preferably 20, more preferably 18, still more preferably 16, and the lower limit of the number of carbon atoms is preferably 10, more preferably 11, still more preferably 12. For example, in terms of instantaneous water permeability, 6 to 16 is preferable, and in terms of repeated water permeability, 10 to 20 is preferable. R 2 and R 3 At least one selected from has a branch, and when R 2 and R 3 have a branch, it is preferable in terms of foam suppression property. R 2 and R 3 may be the same or different.

[0014] In formula (2), AO is an oxyalkylene group having 2 to 4 carbon atoms. m, which is the number of repetitions of the oxyalkylene unit, is an integer of 0 to 20. In terms of foam suppression property, the upper limit of the number of repetitions m is preferably 20, more preferably 18, still more preferably 16, and the lower limit of the number of repetitions m is preferably 3, more preferably 5, still more preferably 7. Also, in terms of instantaneous water permeability and repeated water permeability, the upper limit of the number of repetitions m is preferably 9, more preferably 8, still more preferably 7, and the lower limit of the number of repetitions m is preferably 0, more preferably 1, still more preferably 2. For example, in terms of foam suppression property, 3 to 20 is preferable, and in terms of instantaneous water permeability and repeated water permeability, 0 to 9 is more preferable. When there are two (AO) m in the molecule, they may be the same or different from each other.

[0015] In formula (2), M 1 is a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine or a quaternary ammonium. M1 From the standpoint of emulsification stability and antistatic properties, it is preferable that the element be a hydrogen atom or an alkali metal. Examples of alkali metals include potassium, sodium, and lithium, with potassium or sodium being preferred in terms of emulsification stability and antistatic properties. Examples of organic amines include alkanolamines such as ethanolamine, diethanolamine, and triethanolamine, as well as triethylamine. Examples of quaternary ammonium compounds include alkyltrimethylammonium and dialkyldimethylammonium.

[0016] Specific examples of compound (B) are not limited to, but include di2-ethylhexyl phosphate, di2-ethylhexyl phosphate potassium salt, di(polyoxyethylene 8 molar addition mono2-ethylhexyl) phosphate, di(polyoxyethylene 8 molar addition mono2-ethylhexyl) phosphate potassium salt, diisolauryl phosphate, diisolauryl phosphate potassium salt, di(polyoxyethylene 9 molar addition monoisolauryl) phosphate, di(polyoxyethylene 9 molar addition monoisolauryl) phosphate Examples include potassium phosphate, di(polyoxyethylene 9-mol added monoisolauryl) phosphate potassium salt, diisostearyl phosphate, diisostearyl phosphate potassium salt, di(polyoxyethylene 15-mol added monoisostearyl) phosphate, di(polyoxyethylene 15-mol added monoisostearyl) phosphate potassium salt, mono-2-ethylhexyl monooctyl phosphate potassium salt, mono(polyoxyethylene 8-mol added 2-ethylhexyl) monooctyl phosphate potassium salt, etc. Among these, di-2-ethylhexyl phosphate potassium salt, diisolauryl phosphate potassium salt, and diisostearyl phosphate potassium salt are preferred in terms of instantaneous and repeated water permeability. Furthermore, in terms of anti-foaming properties, di(polyoxyethylene 8-mol added mono-2-ethylhexyl) phosphate potassium salt, di(polyoxyethylene 9-mol added monoisolauryl) phosphate, and di(polyoxyethylene 15-mol added monoisostearyl) phosphate potassium salt are preferred.

[0017] [Compound (C)] Compound (C) is a compound represented by the above general formula (3). In terms of foam suppression properties, it is preferable that the water permeability imparting agent of the first aspect and the treatment agent for manufacturing non-woven fabric of the second aspect contain Compound (C). In formula (3), R 4 and R 5 are each independently a hydrocarbon group having 6 to 22 carbon atoms. In terms of instantaneous water permeability, the upper limit of the number of carbon atoms is preferably 16, more preferably 14, still more preferably 12, and the lower limit of the number of carbon atoms is preferably 6, more preferably 7, still more preferably 8. Also, in terms of repeated water permeability, the upper limit of the number of carbon atoms is preferably 20, more preferably 18, still more preferably 16, and the lower limit of the number of carbon atoms is preferably 10, more preferably 11, still more preferably 12. Also, for example, in terms of instantaneous water permeability, 6 to 16 is preferable, and in terms of repeated water permeability, 10 to 20 is preferable. When Q is M 2 , R 4 has a branch. When Q is -(AO) m R 5 , at least one selected from R 4 and R 5 has a branch. When Q is -(AO) m R 5 , it is preferable in terms of foam suppression properties that R 4 and R 5 have branches. R 4 and R 5 may be the same or different from each other.

[0018] In formula (3), AO is an oxyalkylene group having 2 to 4 carbon atoms. The number of repeating oxyalkylene units, m, is an integer from 0 to 20. In terms of anti-foaming properties, the upper limit of the number of repeating units m is preferably 20, more preferably 18, and still more preferably 16, while the lower limit of the number of repeating units m is preferably 3, more preferably 5, and still more preferably 7. Also, in terms of instantaneous water permeability and repeated water permeability, the upper limit of the number of repeating units m is preferably 9, more preferably 8, and still more preferably 7, while the lower limit of the number of repeating units m is preferably 0, more preferably 1, and still more preferably 2. For example, in terms of anti-foaming properties, 3 to 20 is preferred, and in terms of instantaneous water permeability and repeated water permeability, 0 to 9 is more preferred. (AO) m If there are two of them, they may be the same or different.

[0019] In formula (3), M 1 and M 2 Each of these is independently a hydrogen atom, an alkali metal, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. 1 and M 2 It is preferable that the atom is a hydrogen atom or an alkali metal in terms of emulsification stability and antistatic properties. 1 and M 2 These may be the same or different. Examples of alkali metals include potassium, sodium, and lithium, with potassium or sodium being preferred in terms of emulsification stability and antistatic properties. Examples of organic amines include alkanolamines such as ethanolamine, diethanolamine, and triethanolamine, as well as triethylamine. Examples of quaternary ammonium compounds include alkyltrimethylammonium and dialkyldimethylammonium.

[0020] In equation (3), Q is M 2 or -(AO) m R 5 That is the case. In equation (3), Y is either 1 or 2. M inside the molecule 2If there are two or more of them, they may be the same or different from each other.

[0021] Specific examples of compound (C) are not particularly limited, but include pyro-2-ethylhexyl phosphate (potassium salt), pyro(polyoxyethylene 8-mol addition 2-ethylhexyl) phosphate (potassium salt), pyroisolauryl phosphate (potassium salt), pyro(polyoxyethylene 9-mol addition isolauryl) phosphate (potassium salt), pyroisostearyl phosphate (potassium salt), and pyro(polyoxyethylene 15-mol addition isostearyl) phosphate (potassium salt). Among these, pyro-2-ethylhexyl phosphate (potassium salt), pyroisolauryl phosphate (potassium salt), and pyroisostearyl phosphate (potassium salt) are preferred in terms of instantaneous and repeated water permeability. Furthermore, in terms of anti-foaming properties, pyro(polyoxyethylene 8 molar added 2-ethylhexyl) phosphate (potassium salt), pyro(polyoxyethylene 9 molar added isolauryl) phosphate (potassium salt), and pyro(polyoxyethylene 15 molar added isostearyl) phosphate (potassium salt) are preferred.

[0022] [Compound (D)] Compound (D) is the compound represented by the general formula (4) above, and the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment preferably contain compound (D) in terms of anti-foaming properties. In formula (4), R 6 , R 7 and R 8 Each of these is an independent hydrocarbon group having 6 to 22 carbon atoms. In terms of instantaneous water permeability, the upper limit of the carbon number is preferably 16, more preferably 14, and still more preferably 12, while the lower limit of the carbon number is preferably 6, more preferably 7, and still more preferably 8. In terms of repeated water permeability, the upper limit of the carbon number is preferably 20, more preferably 18, and still more preferably 16, while the lower limit of the carbon number is preferably 10, more preferably 11, and still more preferably 12. Furthermore, for example, a value of 6 to 16 is preferred in terms of instantaneous water permeability, and a value of 10 to 20 is preferred in terms of repeated water permeability. R6 , R 7 and R 8 At least one of those selected has a branch, R 6 , R 7 and R 8 Having branching is preferable in terms of anti-foaming properties. R 6 , R 7 and R 8 They can be the same or different.

[0023] In formula (4), AO is an oxyalkylene group having 2 to 4 carbon atoms. The number of repeating oxyalkylene units, m, is an integer from 0 to 20. In terms of anti-foaming properties, the upper limit of the number of repeating units m is preferably 20, more preferably 18, and still preferably 16, while the lower limit of the number of repeating units m is preferably 3, more preferably 5, and still preferably 7. In terms of instantaneous and repeated water permeability, the upper limit of the number of repeating units m is preferably 9, more preferably 8, and still preferably 7, while the lower limit of the number of repeating units m is preferably 0, more preferably 1, and still preferably 2. For example, in terms of anti-foaming properties, 3 to 20 is preferred, and in terms of instantaneous and repeated water permeability, 0 to 9 is more preferred. (AO) m If there are two or more of them, they may be the same or different from each other.

[0024] Specific examples of compound (D) are not particularly limited, but include tri-2-ethylhexyl phosphate, tri(polyoxyethylene 8-mol added 2-ethylhexyl) phosphate, triisolauryl phosphate, tri(polyoxyethylene 9-mol added isolauryl) phosphate, triisostearyl phosphate, tri(polyoxyethylene 15-mol added isostearyl) phosphate, di-2-ethylhexyl monooctyl phosphate, and di(polyoxyethylene 8-mol added 2-ethylhexyl) monooctyl phosphate. Among these, tri-2-ethylhexyl phosphate, triisolauryl phosphate, and triisostearyl phosphate are preferred in terms of instantaneous and repeated water permeability. Furthermore, tri(polyoxyethylene 8-mol added 2-ethylhexyl) phosphate, tri(polyoxyethylene 9-mol added isolauryl) phosphate, and tri(polyoxyethylene 15-mol added isostearyl) phosphate are preferred in terms of anti-foaming properties.

[0025] [Inorganic phosphate (salt) (IN)] The water permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment preferably contain inorganic phosphoric acid (salt) (IN) in terms of anti-foaming properties. Inorganic phosphoric acid (salt) (IN) is at least one selected from phosphoric acid, dihydrogen phosphate metal salts, dimetallic hydrogen phosphate salts, and trimetallic phosphate salts. Specifically, examples of dimetallic hydrogen phosphate monosaltes include monopotassium dihydrogen phosphate and monosodium dihydrogen phosphate; examples of dimetallic hydrogen phosphates include dipotassium hydrogen phosphate and disodium hydrogen phosphate; and examples of trimetallic phosphates include tripotassium phosphate and trisodium phosphate.

[0026] [Nonionic surfactant (E)] The permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment preferably contain a nonionic surfactant (E) in terms of repeated permeability and emulsification stability. The nonionic surfactant (E) is not particularly limited, but preferred examples include ester compounds (E1) having a structure in which a polyhydric alcohol and a fatty acid are ester-bonded and having one or more hydroxyl groups in the molecule, polyoxyalkylene castor oil ether (E2), polyoxyalkylene hydrogenated castor oil ether (E3), polyoxyalkylene aliphatic alcohol ether (E4), PEG ester (E5), and polycarboxylic acid ester (E6).

[0027] Ester compounds (E1) are compounds that have a structure in which a polyhydric alcohol and a fatty acid are ester-bonded, and that have one or more hydroxyl groups in their molecule.

[0028] There are no particular limitations on the polyhydric alcohol that constitutes the ester compound (E1), but sorbitol and glycerin are preferred in terms of instantaneous water permeability and anti-foaming properties. There are no particular limitations on the fatty acids that constitute the ester compound (E1), but saturated and / or unsaturated fatty acids having 12 to 18 carbon atoms are preferred in terms of instantaneous water permeability and foam suppression properties.

[0029] The ester compound (E1) is not particularly limited, but sorbitan monoester, sorbitan diester, sorbitan triester, glycerin monoester, glycerin diester, and polyglycerin ester are preferred in terms of instantaneous water permeability and anti-foaming properties, with sorbitan monoester being more preferred. Examples of sorbitan monoesters include sorbitan monostearate, sorbitan monooleate, sorbitan monopalmitate, and sorbitan monolaurate; examples of sorbitan diesters include sorbitan distearate, sorbitan dioleate, sorbitan dipalmitate, and sorbitan dilaurate; examples of sorbitan triesters include sorbitan trystearate, sorbitan trioleate, sorbitan tripalmitate, and sorbitan trilaurate; examples of glycerin monoesters include glycerin monostearate and glycerin monooleate; examples of glycerin diesters include glycerin distearate, glycerin dioleate, glycerin dipalmitate, and glycerin dilaurate; and examples of polyglycerin esters include hexaglycerin monostearate.

[0030] Polyoxyalkylene castor oil ether (E2) is a compound having a structure in which an alkylene oxide such as ethylene oxide, propylene oxide, or butylene oxide is added to castor oil. Polyoxyalkylene castor oil ether (E2) is not particularly limited, but examples include polyoxyethylene castor oil ether (polyoxyethylene (1-25 mol) castor oil ether).

[0031] Polyoxyalkylene hydrogenated castor oil ether (E3) is a compound having a structure in which an alkylene oxide such as ethylene oxide, propylene oxide, or butylene oxide is added to hydrogenated castor oil. While not particularly limited, polyoxyethylene hydrogenated castor oil ether (E3) can include polyoxyethylene hydrogenated castor oil ether (polyoxyethylene (1-25 mol) hydrogenated castor oil ether), etc.

[0032] Polyoxyalkylene aliphatic alcohol ethers (E4) are compounds having a structure in which an alkylene oxide such as ethylene oxide, propylene oxide, or butylene oxide is added to an aliphatic monohydric alcohol and / or aliphatic polyhydric alcohol. There are no particular limitations on the aliphatic monohydric alcohol that constitutes the polyoxyalkylene aliphatic alcohol ether (E4), but in terms of instantaneous water permeability, alcohols having 8 to 18 carbon atoms are preferred, and octyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, lauryl alcohol, tridecyl alcohol, myristyl alcohol, stearyl alcohol, isostearyl alcohol, and oleyl alcohol are more preferred. There are no particular limitations on the aliphatic polyhydric alcohols that constitute the polyoxyalkylene aliphatic alcohol ether (E4), but alcohols having 8 to 18 carbon atoms are preferred in terms of instantaneous water permeability, and glycerin, sorbitol, sorbitan, and trimethylolpropane are more preferred. For polyoxyalkylene aliphatic alcohol ether (E4), the number of moles of alkylene oxide added is preferably 1 to 100 moles in terms of instantaneous water permeability. The upper limit of the number of moles added is more preferably 70 moles, even more preferably 50 moles, and particularly preferably 30 moles. On the other hand, the lower limit of the number of moles added is more preferably 2 moles, even more preferably 3 moles, and particularly preferably 4 moles. Also, for example, 2 to 70 moles is more preferably, and 3 to 50 moles is even more preferably. Furthermore, while there are no particular limitations on the ratio of ethylene oxide to the total alkylene oxide, in terms of instantaneous water permeability, it is preferably 20 mol% or more, more preferably 30 mol% or more, and even more preferably 40 mol% or more. In terms of anti-foaming properties, the upper limit of the ethylene oxide ratio is preferably 100 mol% or less, more preferably 95 mol% or less, and even more preferably 90 mol% or less.

[0033] The polyoxyalkylene aliphatic alcohol ether (E4) is not particularly limited, but examples include polyoxyalkylene aliphatic alcohol ethers (polyoxyethylene (1-20 mol) stearyl ether, polyoxyethylene (1-20 mol) oleyl ether, polyoxyalkylene (1-20 mol) palmityl ether, polyoxyalkylene (1-20 mol) lauryl ether, etc. In the polyoxyalkylene aliphatic alcohol ether (E4), the polyoxyalkylene group is a polyoxyalkylene group composed of oxyethylene units and / or oxypropylene units, and it is preferable that it contains oxyethylene units. When the polyoxyalkylene group contains oxyethylene units and oxypropylene units, the addition of oxyethylene units and oxypropylene units may be in block or random form.

[0034] Regarding PEG ester (E5), PEG stands for polyethylene glycol, and PEG ester refers to a polyethylene glycol ester having a structure in which the hydroxyl group of PEG is esterified with a monovalent fatty acid (hereinafter referred to as PEG ester). The number of carbon atoms in the monounsaturated fatty acid is not particularly limited, but 4 to 24 is preferred in terms of foam suppression. The upper limit of the carbon atom number is more preferably 22, and even more preferably 20. On the other hand, the lower limit of the carbon atom number is more preferably 10, and even more preferably 12. Also, for example, 10 to 22 is more preferably, and even more preferably 12 to 20. The monounsaturated fatty acid may be a saturated fatty acid or an unsaturated fatty acid. Examples of PEG esters (E5) include polyoxyethylene (1-20 mol) stearyl ester, polyoxyethylene (1-20 mol) oleyl ester, polyoxyethylene (1-20 mol) palmityl ester, and polyoxyethylene (1-20 mol) lauryl ester.

[0035] Polycarboxylic acid esters (E6) are compounds having a structure in which a polycarboxylic acid and a polyol are esterified together. The polycarboxylic acid is preferably a divalent or greater carboxylic acid having 10 to 66 carbon atoms. Examples of polycarboxylic acids include sebacic acid, oleate dimer, erucate dimer, oleate trimer, and erucate trimer. Among the polycarboxylic acids, it is preferably a dimer acid of an unsaturated fatty acid having 18 to 22 carbon atoms, and more preferably a dimer acid of an unsaturated fatty acid having 18 carbon atoms. The polycarboxylic acid may be an aliphatic polycarboxylic acid or an aromatic polycarboxylic acid, and it is preferably an aliphatic polycarboxylic acid. A polyol is a dihydric or higher alcohol having an oxyalkylene group with 2 to 3 carbon atoms in its molecule. The polyol is not particularly limited as long as it is a dihydric or higher alcohol and has a (poly)oxyalkylene group in its molecule. Examples include polyalkylene glycol, polyoxyalkylene sorbitan, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene glycerin, polyoxyalkylene polyglycerin, and polyoxyalkylene polyglycerin ester, all composed of oxyethylene units and / or oxypropylene units. Among these, polyalkylene glycol composed of oxyethylene units and / or oxypropylene units is preferred. Examples of polyalkylene glycol composed of oxyethylene units and / or oxypropylene units include polyoxyethylene glycol, polypropylene glycol, and polyoxyethylene polyoxypropylene glycol. Polyoxyethylene polyoxypropylene glycol may be in block form or random form. Polyoxyethylene glycol is preferred as the polyalkylene glycol composed of oxyethylene units and / or oxypropylene units. The number-average molecular weight of polyalkylene glycol is preferably 100 to 10000, more preferably 200 to 2000, and even more preferably 400 to 1000.

[0036] [Other ingredients] The water permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment may also contain, from the viewpoint of exhibiting the effects of the present invention, the following anionic surfactant (F), amphoteric surfactant (G), and modified silicone (H) as other components. The anionic surfactant (F) is not particularly limited as long as it is an anionic surfactant other than compound (A), compound (B), compound (C), and compound (D), but alkyl sulfate salts, alkyl sulfonate salts, dialkyl sulfosuccinate salts, etc., are preferred. Examples of alkyl sulfate salts include alkyl sulfate salts having a structure obtained by sulfurizing and neutralizing polyhydric alcohol fatty acid esters. The method of sulfurization is not particularly limited, and known methods using fuming sulfuric acid, concentrated sulfuric acid, chlorosulfonic acid, sulfur trioxide gas, etc., can be used. The method of neutralization is not particularly limited, and known methods can be used. Basic substances used for neutralization include alkali metal carbonates such as sodium carbonate and potassium carbonate, alkali metal bicarbonates such as sodium bicarbonate and potassium bicarbonate, alkali metal hydroxides such as sodium hydroxide, potassium hydroxide and lithium hydroxide, oxides and hydroxides of alkaline earth metals such as calcium oxide, calcium hydroxide, magnesium oxide and magnesium hydroxide, ammonia, mono, di and trialcanolamines with 2 to 4 carbon atoms in the hydroxyalkyl chain, primary, secondary and tertiary alkylamines with 1 to 4 carbon atoms in the alkyl chain, etc. Two or more basic substances may be used in combination. The fatty acids used in the synthesis of polyhydric alcohol fatty acid esters must contain unsaturated fatty acids, but may also contain saturated fatty acids, hydroxy fatty acids, or hydroxyunsaturated fatty acids. As the alkyl sulfate salt, polyhydric alcohol fatty acid ester sulfate salts are preferred. Dialkyl sulfosuccinate salts are dialkyl esters of succinic acid having a sulfonate group at the α-position. The number of carbon atoms in the alkyl group constituting the dialkyl ester is preferably 6 to 18. The upper limit of the alkyl group is more preferably 16, even more preferably 14, and particularly preferably 13. On the other hand, the lower limit of the alkyl group is more preferably 7, even more preferably 8, and particularly preferably 9. Also, for example, 8 to 18 is more preferably, and 10 to 13 is even more preferably.

[0037] [Water permeability imparting agents and treatment agents for nonwoven fabric manufacturing] The water permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment contain compound (A) represented by the above general formula (1) and compound (B) represented by the above general formula (2), and contain at least one selected from compound (C) represented by the above general formula (3), compound (D) represented by the above general formula (4), and inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content of the water permeability imparting agent and the nonwoven fabric manufacturing treatment agent, respectively, described later, is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum of the peak areas P1 to P3 (P1 + P2 + P3) of the spectra of the nonvolatile content of the water permeability imparting agent and the nonwoven fabric manufacturing treatment agent, respectively, measured by P-nuclear NMR, is 40 to 100%. The permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment are not particularly limited, but we believe that satisfying these conditions will weaken the foam film and result in excellent foam suppression.

[0038] The acid values ​​of the non-volatile components of the permeability imparting agent in the first embodiment and the non-volatile components of the nonwoven fabric manufacturing treatment agent in the second embodiment are 0.5 to 450 mgKOH / g, respectively. We believe that when the acid value is between 0.5 and 450 mgKOH / g, foam film stability decreases, resulting in excellent foam suppression. Furthermore, if the acid value is less than 0.5 mgKOH / g, foam suppression decreases, and if the acid value exceeds 450 mgKOH / g, instantaneous and repeated water permeability becomes insufficient. The upper limit of the acid value of the non-volatile content of the water permeability imparting agent in the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent in the second embodiment is preferably 400 mg KOH / g, more preferably 300 mg KOH / g, and even more preferably 200 mg KOH / g, in terms of antistatic properties. On the other hand, the lower limit of the acid value is preferably 5 mg KOH / g, more preferably 10 mg KOH / g, and even more preferably 15 mg KOH / g, in terms of anti-foaming properties. Also, for example, 5 to 300 mg KOH / g is preferred, and 10 to 200 mg KOH / g is more preferred. Furthermore, in this invention, the non-volatile content of the water permeability imparter and the non-volatile content of the non-woven fabric manufacturing treatment agent refers to the residue on the aluminum sheet when 2.0 to 3.0 g of the water permeability imparter or non-woven fabric manufacturing treatment agent is spread flat on an aluminum sheet, dried at 110°C under infrared lamp irradiation, and the fluctuation range of the volatile content over 150 seconds becomes 0.15%.

[0039] The ratio of P1 to the sum of the peak areas P1 to P3 (P1+P2+P3) of the spectra measured by P-nuclear NMR for the non-volatile content of the water permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is 40-100%. P1: Peak area within the range of 0-10 ppm P2: Peak area within the range of -25 to -3 ppm P3: Peak area within the range of -3 to 0 ppm Compounds exhibiting peaks in the spectrum from -25 to 10 ppm tend to be assigned, from the low magnetic field side, primarily inorganic phosphoric acid or compound (A), compound (B), compound (D), and compound (C). If [P1 / (P1+P2+P3)] is between 40% and 100%, the foam film stability decreases, and therefore it is considered to have excellent foam suppression properties. If P1 / (P1+P2+P3) is less than 40%, instantaneous water permeability and repeated water permeability are insufficient. The upper limit of the ratio of P1 is preferably 90%, more preferably 80%, and still preferably 75%, in terms of instantaneous water permeability and repeated water permeability. On the other hand, the lower limit of P1 / (P1+P2+P3) is preferably 40%, more preferably 45%, and still preferably 50%, in terms of foam suppression. Also, for example, 40-90% is preferred, 45-85% is more preferred, and 50-75% is still preferred. The method for measuring the peak areas of P1 to P3 is the same as the method described in the examples.

[0040] When the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment are each prepared as an aqueous dispersion with a non-volatile content of 1%, the dynamic surface tension at a life time of 1000 ms is preferably 25 to 60 mN / m in terms of process passability, instantaneous water permeability, and repeated water permeability. In terms of process passability, the upper limit of the dynamic surface tension is preferably 58 mN / m, more preferably 55 mN / m, and even more preferably 50 mN / m. On the other hand, the lower limit of the dynamic surface tension is preferably 25.5 mN / m, more preferably 26 mN / m, and even more preferably 26.5 mN / m. Furthermore, for example, in terms of instantaneous water permeability, 25.5 to 58 mN / m is more preferable, 26 to 55 mN / m is even more preferable, and 26.5 to 50 mN / m is particularly preferable. Furthermore, the method for measuring the dynamic surface tension at a lifespan of 1000 ms when the water permeability imparting agent and the nonwoven fabric manufacturing treatment agent are used as an aqueous dispersion with a non-volatile content of 1% is as described in the examples.

[0041] The ratio of the total of compound (A), compound (B), compound (C), compound (D), and inorganic phosphoric acid (salt) (IN) to the non-volatile content of the permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is not particularly limited, but is preferably 5 to 95% by weight in terms of antistatic properties, instantaneous water permeability, and repeated water permeability. The upper limit of this ratio is more preferably 90% by weight, even more preferably 80% by weight, and particularly preferably 70% by weight. On the other hand, the lower limit of this ratio is more preferably 10% by weight, even more preferably 15% by weight, and particularly preferably 20% by weight. Also, for example, 10 to 90% by weight is more preferred, and 15 to 80% by weight is even more preferred. Also, for example, 20 to 90% by weight is preferred in terms of instantaneous water permeability and anti-foaming properties, and 10 to 70% is preferred in terms of repeated water permeability.

[0042] The ratio of compound (A) to the non-volatile content of the permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is not particularly limited, but is preferably 13 to 73% by weight in terms of antistatic properties, instantaneous water permeability, repeated water permeability, and ease of satisfying the specific P1 / (P1+P2+P3) of the present invention. The upper limit of this ratio is more preferably 73% by weight, even more preferably 45% by weight, and particularly preferably 30% by weight. On the other hand, the lower limit of this ratio is more preferably 13% by weight, even more preferably 22% by weight, and particularly preferably 25% by weight. Also, for example, 22 to 45% by weight is more preferable, and 25 to 30% by weight is even more preferable.

[0043] The ratio of compound (B) to the non-volatile content of the permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is not particularly limited, but is preferably 13 to 56% by weight in terms of antistatic properties, instantaneous water permeability, repeated water permeability, and ease of satisfying the specific P1 / (P1+P2+P3) of the present invention. The upper limit of this ratio is more preferably 56% by weight, even more preferably 45% by weight, and particularly preferably 40% by weight. On the other hand, the lower limit of this ratio is more preferably 13% by weight, even more preferably 20% by weight, and particularly preferably 30% by weight. Also, for example, 20 to 45% by weight is more preferable, and 30 to 40% by weight is even more preferable.

[0044] The ratio of compound (C) to the non-volatile content of the permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is not particularly limited, but is preferably 0 to 61% by weight in terms of antistatic properties, instantaneous water permeability, repeated water permeability, and ease of satisfying the specific P1 / (P1+P2+P3) of the present invention. The upper limit of this ratio is more preferably 61% by weight, even more preferably 40% by weight, and particularly preferably 37% by weight. On the other hand, the lower limit of this ratio is more preferably 2% by weight, even more preferably 5% by weight, and particularly preferably 20% by weight. Also, for example, 2 to 50% by weight is more preferably, and 5 to 40% by weight is even more preferably.

[0045] The ratio of compound (D) to the non-volatile content of the permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is not particularly limited, but is preferably 0 to 2% by weight in terms of antistatic properties, instantaneous water permeability, repeated water permeability, and ease of satisfying the specific P1 / (P1+P2+P3) of the present invention. The upper limit of this ratio is more preferably 2% by weight, even more preferably 1% by weight, and particularly preferably 0.5% by weight. On the other hand, the lower limit of this ratio is more preferably 0.1% by weight, even more preferably 0.2% by weight, and particularly preferably 0.4% by weight. Also, for example, 0.1 to 2% by weight is more preferably, and 0.2 to 1% by weight is even more preferably.

[0046] The ratio of inorganic phosphoric acid (salt) (IN) to the non-volatile content of the permeability imparting agent of the first embodiment and the non-volatile content of the nonwoven fabric manufacturing treatment agent of the second embodiment is not particularly limited, but is preferably 0 to 8% by weight in terms of antistatic properties, instantaneous water permeability, repeated water permeability, and ease of satisfying the specific P1 / (P1+P2+P3) of the present invention. The upper limit of this ratio is more preferably 8% by weight, even more preferably 1% by weight, and particularly preferably 0.5% by weight. On the other hand, the lower limit of this ratio is more preferably 0% by weight, even more preferably 0.1% by weight, and particularly preferably 0.2% by weight. Also, for example, 0 to 1% by weight is more preferably, and 0.1 to 0.5% by weight is even more preferably.

[0047] The compounds (A), (B), (C), and (D) used in the water permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment can be modified by changing the ratio of alcohol to tetraphosphorus decoxide. Furthermore, the proportion of compound (A) can be increased by using phosphoric acid in the reaction.

[0048] The ratio of nonionic surfactant (E) to nonvolatile content in the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment is preferably 5 to 95% by weight in terms of repeated water permeability, emulsification stability, and antistatic properties. The upper limit of this ratio is more preferably 90% by weight, even more preferably 85% by weight, and particularly preferably 80% by weight. On the other hand, the lower limit of this ratio is more preferably 10% by weight, even more preferably 20% by weight, and particularly preferably 30% by weight. Also, for example, 10 to 90% by weight is more preferably, and 20 to 85% by weight is even more preferably. Furthermore, for example, 20 to 90% by weight is preferred in terms of instantaneous water permeability and anti-foaming properties, and 10 to 70% is preferred in terms of repeated water permeability.

[0049] The ratio of the anionic surfactant (F) to the nonvolatile content of the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment is preferably 5 to 95% by weight in terms of repeated water permeability, emulsification stability, and antistatic properties. The upper limit of this ratio is more preferably 90% by weight, even more preferably 85% by weight, and particularly preferably 80% by weight. On the other hand, the lower limit of this ratio is more preferably 8% by weight, even more preferably 10% by weight, and particularly preferably 15% by weight. Also, for example, 8 to 90% by weight is more preferably, and 10 to 85% by weight is even more preferably.

[0050] The first embodiment of the water permeability imparting agent is not particularly limited as long as it imparts water permeability to the target object, but it may be an agent that temporarily imparts water permeability to the target object during the manufacturing process of fibers or nonwoven fabrics, or an agent that imparts water permeability to the final product to which the water permeability imparting agent has been applied. For example, one application is to impart water permeability to absorbent articles using nonwoven fabrics by attaching a water permeability imparting agent to fibers to produce a nonwoven fabric.

[0051] The nonwoven fabric manufacturing treatment agent in the second embodiment is not particularly limited as long as it is used during the manufacture of nonwoven fabric, but it may also be one used during the manufacture of nonwoven fabric as described later. The nonwoven fabric manufacturing treatment agent is used to improve the processability during the manufacture of nonwoven fabric by attaching the treatment agent to the fibers. Examples of uses include suppressing static electricity generation when passing through the card or imparting hydrophilicity during spunlace.

[0052] [Fibers and methods for manufacturing fibers] The fibers of the present invention are formed by applying the above-mentioned water permeability imparting agent or the above-mentioned nonwoven fabric manufacturing treatment agent to the fiber body. The fibers of the present invention may be short fibers or long fibers, but short fibers are preferable in terms of instantaneous water permeability and repeated water permeability. The adhesion rate of nonvolatile components of the water permeability imparting agent or nonwoven fabric manufacturing treatment agent to the fiber body is preferably 0.03 to 2% by weight, and more preferably 0.1 to 1% by weight, relative to the fiber body, in terms of antistatic properties, instantaneous water permeability, and repeated water permeability.

[0053] The present invention provides a method for producing fibers that includes a step of applying a water permeability imparting agent according to the first embodiment or a nonwoven fabric manufacturing treatment agent according to the second embodiment to raw fibers. The other steps are not particularly limited, and known methods can be used. "Raw fibers" refers to fibers that have not been treated with the water permeability imparting agent according to the first embodiment or the nonwoven fabric manufacturing treatment agent according to the second embodiment. By applying the water permeability imparting agent according to the first embodiment or the nonwoven fabric manufacturing treatment agent according to the second embodiment to the fibers, fibers of stable quality can be produced efficiently.

[0054] Examples of fiber materials include polyolefin fibers, polyester fibers, nylon fibers, PVC fibers, and composite fibers made of two or more thermoplastic resins. Examples of composite fiber combinations include, in the case of polyolefin resin / polyolefin resin, high-density polyethylene / polypropylene, linear high-density polyethylene / polypropylene, low-density polyethylene / polypropylene, binary or ternary copolymer of propylene and other α-olefins / polypropylene, linear high-density polyethylene / high-density polyethylene, and low-density polyethylene / high-density polyethylene. Examples of polyolefin resin / polyester resin combinations include polypropylene / polyethylene terephthalate, high-density polyethylene / polyethylene terephthalate, linear high-density polyethylene / polyethylene terephthalate, and low-density polyethylene / polyethylene terephthalate. Examples of polyester resin / polyester resin combinations include copolymerized polyester / polyethylene terephthalate. Furthermore, fibers made of polyamide resin / polyester resin, polyolefin resin / polyamide resin, etc., can also be exemplified. Among these fiber materials, hydrophobic synthetic fibers such as polyolefin fibers (polyolefin fibers or composite fibers containing polyolefin fibers) and polyester fibers (polyester fibers or composite fibers containing polyester fibers) are preferred for their soft texture, and the water permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment are more suitable for these materials, with polyolefin fibers being even more suitable. Furthermore, these fibers are preferable in terms of water permeability if they are fibers used for manufacturing nonwoven fabrics.

[0055] Examples of fiber cross-sectional structures include sheath-core type, parallel type, eccentric sheath-core type, multilayer type, radial type, or sea-island type. However, due to productivity in the fiber manufacturing process and ease of nonwoven fabric processing, sheath-core type including eccentricity or parallel type are preferred. Furthermore, the cross-sectional shape can be circular or irregular. In the case of irregular shapes, any shape is possible, such as flattened, polygonal (triangular to octagonal), T-shaped, hollow, or multi-lobed.

[0056] The permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment may be applied directly to the fiber body without dilution, or they may be diluted with water or the like to a concentration where the weight percentage of nonvolatile content is 0.5 to 5% by weight before being applied to the fiber body. The process of applying the permeability imparting agent and the nonwoven fabric manufacturing treatment agent to the fiber body may be any of the fiber body's spinning process, drawing process, crimping process, etc. There are no particular limitations on the means of applying the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment to the fiber body, and means such as roller lubrication, nozzle spray lubrication, and dip lubrication may be used. A method that can obtain the desired amount of application more uniformly and efficiently may be adopted in accordance with the fiber manufacturing process and its characteristics. Furthermore, as a drying method, methods such as drying with hot air and infrared rays, or drying by contact with a heat source may be used.

[0057] [Nonwoven fabric] The nonwoven fabric of the present invention may be obtained by applying the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment to a raw nonwoven fabric that has not been treated with the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment, or by using fibers treated with the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment to produce a nonwoven fabric. There are no particular limitations on the method for producing the nonwoven fabric of the present invention, and known methods can be used. Short fibers and long fibers can be used as raw fibers. Examples of web formation methods for raw fibers that are short fibers include dry methods such as the carding method and the airlaid method, and wet methods such as the papermaking method. Examples of web formation methods for raw fibers that are long fibers include the spunbond method, the meltblown method, and the flash spinning method. Examples of interfiber bonding methods include the chemical bond method, the thermal bond method, the needle punch method, the spunlace method, and the stitch bond method. The method for manufacturing the nonwoven fabric of the present invention preferably includes the steps of passing the fibers of the present invention through a carding machine or the like to produce a fiber web, and then heat-treating the obtained fiber web. That is, the water permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment are particularly suitable for use when the manufacturing of the nonwoven fabric includes a step of heat-treating the fiber web. Methods for joining fiber webs by heat treatment include thermal compression bonding using heated rolls or ultrasound, thermal fusion using heated air, and point bonding. As an example of joining fiber webs by heat treatment, in the case of a sheath-core type composite fiber using a high-melting-point resin for the core and a low-melting-point resin for the sheath, heat treatment near the melting point of the low-melting-point resin can easily perform thermal bonding of the fiber intersections. As a method for manufacturing nonwoven fabrics, examples include a method in which short fibers treated with the water permeability imparting agent of the first aspect or the nonwoven fabric manufacturing treatment agent of the second aspect are passed through a carding machine or the like to form a web, which is then heat-treated as described above to bond and integrate it, and a method in which, when laminating pulp or the like in an airlaid method, fibers (short fibers) to which the water permeability imparting agent of the first aspect or the nonwoven fabric manufacturing treatment agent of the second aspect are attached are mixed together and heat-treated as described above to bond them. In addition, examples include a method in which a fibrous molded body obtained by the spunbond method, melt-blown method, flash spinning method, etc., is treated with the water permeability imparting agent of the first aspect and the nonwoven fabric manufacturing treatment agent of the second aspect, and then heat-treated with a heated roll or heated air, or a heat-treated product is treated with a heated roll or heated air, and then the water permeability imparting agent of the first aspect or the nonwoven fabric manufacturing treatment agent of the second aspect is attached to it to manufacture a nonwoven fabric.

[0058] One example of the spunbond method involves spinning a composite fiber resin, then cooling the spun composite filament with a cooling fluid, and applying tension to the filament with stretched air to achieve the desired fineness. Subsequently, the spun filament is collected on a collection belt and subjected to bonding to obtain a spunbond nonwoven fabric. Bonding methods include thermocompression bonding using heated rolls or ultrasound, thermal fusion using heated air, and point bonding. The method for applying the permeability imparting agent of the first embodiment or the nonwoven fabric manufacturing treatment agent of the second embodiment to the obtained spunbond nonwoven fabric can be a roll coating method such as gravure, flexographic, or gate roll method, or a spray coating method, but is not particularly limited as long as the amount applied to the nonwoven fabric can be adjusted on each side. Furthermore, as a drying method, methods such as drying with hot air and infrared rays, or drying by contact with a heat source may be used.

[0059] [Absorbent articles] The absorbent article of the present invention includes the nonwoven fabric of the present invention. Examples of the absorbent article of the present invention include disposable diapers and sanitary napkins (sanitary napkins, etc.). In the absorbent article of the present invention, the nonwoven fabric of the present invention is preferably used as a top sheet for sanitary materials such as disposable diapers and sanitary napkins. It can also be used in second seats, absorbent materials, and absorbent pads. [Examples]

[0060] The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to the examples described herein. In the following examples, "percent (%)" and "parts" refer to "weight %" and "parts by weight" respectively, unless otherwise specified. In the examples and comparative examples, the evaluation of each property of the water permeability imparter was carried out according to the following method.

[0061] (Examples 1-56 and Comparative Examples 1-9) The acid values ​​of the reacted unneutralized products (P-1-1 to P-11-1 and p-1 to p-3) were measured, and the amount of potassium hydroxide for neutralization that would result in the compositional components and acid values ​​shown in Tables 1 to 3 and 10 to 11 was calculated. In addition, the amount of water required to achieve a non-volatile content of 50% by weight after neutralization was calculated and mixed with potassium hydroxide for neutralization to obtain an aqueous solution of potassium hydroxide for neutralization. Furthermore, while stirring the unneutralized products (P-1-1 to P-11-1 and p-1 to p-3), the obtained aqueous solution of potassium hydroxide for neutralization was added dropwise to obtain partially neutralized products (partially neutralized products of P-1-1 to P-11-1 and p-1 to p-3). Using the obtained partially neutralized products (partially neutralized products of P-1-1 to P-11-1 and p-1 to p-3), each component was mixed to achieve the formulation components and acid values ​​shown in Tables 1 to 3 and 10 to 11. Water was then added as needed to prepare the permeability imparters for Examples 1 to 56 and Comparative Examples 1 to 9, each with a weight percentage of non-volatile content of 50% by weight in the total permeability imparter. The components listed in Tables 1 to 3 and 10 to 11 were as shown in Tables 4 to 9 and described later. The resulting water-permeability imparters were mixtures of alkali metal salts and unneutralized products for each of the compounds represented by general formula (1), general formula (2), general formula (3), general formula (4), and inorganic phosphoric acid (salt). The obtained water permeability imparters were each diluted with 60°C hot water to obtain diluted solutions with a concentration of 0.9% by weight of non-volatile components. Next, 150g of diluted solution of each water-permeability agent was applied to 300g of fiber material using the dip application method, and the amount of non-volatile water-permeability agent adhering to the fiber was adjusted to 0.45% by weight. The fiber material was a polypropylene (core)-polyethylene (sheath) composite fiber without any fiber treatment agents such as water-permeability agents attached, with a single fiber fineness of 2.2 Dtex and a fiber length of 38mm. The fibers to which the diluted solutions of each water-permeability agent were applied were placed in an 80°C hot air dryer for 2 hours, and then left to dry at room temperature for 8 hours or more to obtain fibers to which the water-permeability agent had been applied.

[0062] The fibers treated with a water permeability agent were passed through a fiber opening process and a carding process using a carding test machine, resulting in a basis weight of 25 g / m². 2A web was prepared. The obtained web was heat-treated at 140°C in an air-through type hot air circulation dryer to fix the web and obtain a nonwoven fabric. The physical properties of the obtained nonwoven fabric were evaluated using the evaluation methods shown below. The results are shown in Tables 1-3 and 10-11.

[0063] [Measurement of the ratio of P1 (P1 / (P1+P2+P3)) by P-nuclear NMR] Weigh 150 mg of the non-volatile component of the water permeability agent into a 5 mm diameter NMR sample tube, and dissolve it in approximately 0.5 ml of heavy water (D2O) or deuterated chloroform (CDCl3) as the deuterating solvent. 31 Measurements were performed using P-NMR spectrometers (BRUKER AVANCE400, 162MHz and JEOL JNM-ECZ400R, 162MHz). The peak area within the range of each chemical shift described below was calculated, and the percentage of P1 obtained by P-nuclear NMR was calculated based on the formula P1 / (P1+P2+P3). P1: Peak area within the range of 0-10 ppm P2: Peak area within the range of -25 to -3 ppm P3: Peak area within the range of -3 to 0 ppm

[0064] [Measurement of dynamic surface tension] Each water permeability agent was diluted with 60°C warm water to a concentration of 1.0% by weight of non-volatile matter. The diluted solution was then subjected to dynamic surface tension measurements using a bubble pressure type dynamic surface tensimeter (BP-2, manufactured by KRUSS) at 25°C and with a bubble generation interval (bubble plate) ranging from 10 to 10,000 msec. The dynamic surface tension at a bubble generation interval (bubble plate) of 1,000 msec was read.

[0065] (Method for measuring acid value) The acid value (x mgKOH / g) as used in this invention was measured by the following method. Using the non-volatile components of each water permeability agent, 1 g of each sample was dissolved in 50 mL of a xylene / ethanol = 1 / 1 solution containing 0.01% phenolphthalein. A 0.1 mol / L potassium hydroxide ethanol solution was added dropwise to the solution, and the volume of liquid (y mL) until a faint pink color appeared was measured. The result was then calculated using the following formula. x = y × 5.61

[0066] [Process passability (felt sedimentation)] Each water permeability agent was diluted with 60°C warm water to obtain a diluted solution with a concentration of 1.0% by weight of non-volatile matter. Next, the material was placed in 10 ml of diluted Nikke Orifelt S20 (No. 103) solution, cut into 2 x 2 cm pieces, and the time (in seconds) until it settled was measured to evaluate its uniform adhesion (temperature: 23°C). A shorter settling time indicates easier control of the amount of permeability-enhancing agent or treatment agent applied, thus signifying superior process passability. The time in seconds was evaluated according to the following criteria. A score of 5 is the best evaluation, and a score of 3 or higher indicates that it is suitable for practical use. (judgment criteria) 5… Less than 10 seconds 4. 10 seconds or more but less than 50 seconds 3. 50 seconds or more but less than 100 seconds 2. 100 seconds or more but less than 200 seconds 1. ... 200 seconds or more

[0067] [Foam control] The test was conducted according to the Rossmiles test method of JIS K3362. Specifically, each water permeability agent was diluted with 60°C warm water to a concentration of 1.0% by weight of non-volatile matter. 200 ml of the diluted solution was then dropped onto 50 ml of the diluted solution from 900 mm above over 30 seconds in a 50°C environment. The amount of foam was measured 5 minutes after the dropping was completed. A lower foaming force indicates better foam suppression. The amount of foam was evaluated according to the following criteria. A score of 5 is the best evaluation, and a score of 3 or higher indicates that the material is suitable for practical use. (judgment criteria) 5… Less than 20mm 4. 20mm or more and less than 80mm 3. 80mm or more and less than 150mm 2. 150mm or more and less than 250mm 1…250mm or more

[0068] [Instant water permeability of nonwoven fabric] A nonwoven fabric made using fibers treated with a water-permeability agent was placed on top of filter paper (Toyo Filter Paper, No. 5). One drop (approximately 0.05 ml) of artificial urine was dropped from a burette placed 10 mm above the surface of the nonwoven fabric, and the time it took for the water droplet to disappear from the surface of the nonwoven fabric was measured. This measurement was performed at 20 locations on the surface of the nonwoven fabric, and the number of droplets that disappeared in less than 5 seconds was displayed. The number was evaluated according to the following criteria. A score of 5 is the best evaluation, and a score of 3 or higher indicates that the fabric is suitable for practical use. (Judgment criteria) 5 … 19~20 pieces 4 … 17~18 pieces 3 … 14~16 pieces 2 … 11~13 pieces 1…10 or less

[0069] [Repeated water permeability of nonwoven fabrics] Following the EDANA Repeated Liquid Strike-Through Time method, 0.9% physiological saline solution was passed through a nonwoven fabric (10cm x 10cm) made using fibers treated with a water permeability agent, and the permeability time was measured. After permeation, the nonwoven fabric was sandwiched between two sheets of filter paper (Toyo Filter Paper, No. 5), a board (10cm x 10cm) and a weight (500g) were placed on top, and it was left for 3 minutes to dewater, and then air-dried for a further 5 minutes. The same procedure was repeated for the nonwoven fabric used in the test. In this repeated test, a shorter water permeability time is preferable even after multiple passes. The time (in seconds) was evaluated according to the following criteria. A rating of 5 is the best, and a rating of 3 or higher indicates that the fabric is suitable for practical use. Furthermore, a rating of 3 or higher after the second water permeation is considered suitable for practical use, and a rating of 3 or higher after the third water permeation is considered even more suitable for practical use. 〔Judgment criteria〕 5… Less than 2 seconds 4. 2 seconds or more but less than 3 seconds 3… 3 seconds or more but less than 5 seconds 2. 5 seconds or more but less than 10 seconds 1. More than 10 seconds

[0070] The methods for producing the unneutralized substances P-1-1 to P-11-1 and p-1 to p-3 used in the examples and comparative examples are shown below. The components obtained by the manufacturing methods of P-1-1 to P-11-1 and p-1 to p-3 were as shown in Tables 4 to 9. (Manufacturing method for P-1-1) 385 g of 2-ethylhexyl alcohol was added to a 1000 mL four-necked flask and stirred while gradually adding tetraphosphorus decoxide until the total volume reached 550 g. The reaction was carried out to obtain an unneutralized product. The acid value of the obtained unneutralized product was measured.

[0071] (Manufacturing method for P-1-2) 293 g of 2-ethylhexyl alcohol and 42 g of 75% phosphoric acid were added to a 1000 mL four-necked flask and stirred. 144 g of tetraphosphorus decoxide was gradually added and the reaction was allowed to proceed. Then 69 g of water was added and the reaction continued to obtain an unneutralized product. The acid value of the obtained unneutralized product was measured.

[0072] (Manufacturing method for P-1-3) 398 g of 2-ethylhexyl alcohol was added to a 1000 mL four-necked flask and stirred while gradually adding tetraphosphorus decoxide until the total volume reached 550 g. The reaction was carried out to obtain an unneutralized product. The acid value of the obtained unneutralized product was measured.

[0073] (Manufacturing method for P-1-4) 369 g of 2-ethylhexyl alcohol was added to a 1000 mL four-necked flask and stirred while gradually adding tetraphosphorus decoxide until the total volume reached 550 g. The reaction was carried out to obtain an unneutralized product. The acid value of the obtained unneutralized product was measured. (Manufacturing method for P-1-5) 385 g of 2-ethylhexyl alcohol was added to a 1000 mL four-necked flask and stirred while gradually adding tetraphosphorus decoxide until the total volume reached 550 g. 29 g of water was added and the reaction continued to obtain an unneutralized product. The acid value of the obtained unneutralized product was measured.

[0074] (Method for manufacturing P-1-6, P-1-7, and P-1-8) Mono-2-ethylhexyl phosphate, di-2-ethylhexyl phosphate, pyro-2-ethylhexyl phosphate, tri-2-ethylhexyl phosphate, and inorganic phosphoric acid were mixed in the proportions shown in Tables 4 and 5 to prepare the product.

[0075] (Manufacturing method for P-2-1) It was prepared in the same manner as (P-1-1) using 492 g of polyoxyethylene 8 molar-added 2-ethylhexyl alcohol. (Manufacturing method for P-2-2) 499 g of polyoxyethylene 8 molar-added 2-ethylhexyl alcohol was used and prepared in the same manner as in (P-1-1).

[0076] (Manufacturing method for P-3-1) It was prepared using 421 g of isolauryl alcohol in the same manner as (P-1-1).

[0077] (Manufacturing method for P-4-1) It was prepared using 502 g of polyoxyethylene 9 molar-added isolauryl alcohol, in the same manner as (P-1-1).

[0078] (Manufacturing method for P-5-1) It was prepared using 455 g of isostearyl alcohol, in the same manner as (P-1-1).

[0079] (Manufacturing method for P-6-1) It was prepared in the same manner as (P-1-1) using 520 g of polyoxyethylene 15 molar-added isostearyl alcohol. (Manufacturing method for P-7-1) It was prepared using 405 g of isodecyl alcohol in the same manner as (P-1-1). (Manufacturing method for P-8-1) It was prepared using 470 g of polyoxyethylene 3-molar added isolauryl alcohol, in the same manner as in (P-1-1). (Manufacturing method for P-9-1) It was prepared in the same manner as (P-1-1) using 485 g of polyoxyethylene 5 molar-added isolauryl alcohol. (Manufacturing method for P-10-1) It was prepared using 495 g of polyoxyethylene 7-molar added isolauryl alcohol, in the same manner as (P-1-1). (Manufacturing method for P-11-1) It was prepared using 445 g of isocetyl alcohol, in the same manner as (P-1-1). (Manufacturing method for p-1) 385g of octyl alcohol was used and prepared in the same manner as (P-1-1). (Method of manufacturing p-2) It was prepared using 412 g of lauryl alcohol, in the same manner as (P-1-1). (Manufacturing method for p-3) It was prepared using 455g of stearyl alcohol, in the same manner as (P-1-1).

[0080] The ingredients listed in Tables 1-3 are as follows: E-1: Polyoxyethylene 20 molar addition-hydrogenated castor oil ether E-2: PEG(400) Oleate E-3: Sorbitan monolaurate E-4: Sorbitan Monooleate E-5: Polyoxyalkylene alkyl (12, 13 carbon atoms) ether (random addition of 6 moles of polyoxyethylene and 2 moles of polyoxypropylene) E-6: Polyoxyethylene 25 molar addition-hydrogenated castor oil ether E-7: Hexaglycerin monostearate F: Sodium ditridecyl sulfosuccinate G: Stearyldimethylammonium betaine

[0081] [Table 1]

[0082] [Table 2]

[0083] Table 3

[0084] Table 4

[0085] Table 5

[0086] Table 6

[0087] Table 7

[0088] Table 8

[0089] Table 9

[0090] Table 10

[0091] Table 11

[0092] As can be seen from Tables 1-2 and 10-11, the water permeability imparters of Examples 1-56 contain compound (A) represented by the following general formula (1) and compound (B) represented by the following general formula (2), and also contain at least one selected from compound (C) represented by the following general formula (3), compound (D) represented by the following general formula (4), and inorganic phosphoric acid (salt) (IN). The acid value of the nonvolatile content of the water permeability imparter is 0.5-450 mgKOH / g, and the ratio of P1 to the sum of the peak areas P1-P3 (P1+P2+P3) in the spectrum of the nonvolatile content of the water permeability imparter measured by P-nuclear NMR [P1 / (P1+P2+P3)] is 40-100%, thus the problem of the present invention has been solved. Furthermore, each of the water permeability imparters in Examples 1 to 56 was evaluated in the same manner as in Examples 1 to 56, except that the amount of non-volatile components of the water permeability imparter was set to 0.03% by weight. As a result, all of them yielded results of 5 for instantaneous water permeability, 3 or higher for repeated water permeability (2 passes), 3 or higher for felt sedimentation, and 3 or higher for foam suppression. The above is a 5-point evaluation scale, with 5 being the best evaluation and 3 or higher indicating that it is suitable for practical use. Furthermore, we confirmed that diapers and sanitary products using the nonwoven fabrics prepared in Examples 1 to 56 as surface sheets also exhibited excellent water permeability. Furthermore, when a web was prepared using polyolefin fibers obtained with the water permeability imparting agents used in Examples 1 to 56, and a nonwoven fabric was produced by the spunlace method, it was confirmed that the fibers exhibited excellent foam suppression in the defoaming test and could be manufactured with stable quality. The defoaming test involves placing raw cotton treated with the processing agent into water, squeezing the extracted liquid, and measuring the foam height when the liquid is shaken. As described above, the water permeability imparting agents of Examples 1 to 56 were confirmed to be useful as treatment agents for the production of air-through nonwoven fabrics and spunlace nonwoven fabrics.

[0093] On the other hand, as can be seen from Table 3, when compound (A) and compound (B) are not included (Comparative Examples 1-3, 8, 9), when the acid value of the non-volatile components of the water permeability imparter is not 0.5-450 mgKOH / g (Comparative Examples 4, 5), when P1 / (P1+P2+P3) is not 40-100% (Comparative Example 6), and when compound (C), compound (D), and inorganic phosphoric acid (salt) (IN) are not included (Comparative Example 7), the problem of foam suppression, which is the issue of this application, has not been resolved. [Industrial applicability]

[0094] Fibers and nonwoven fabrics treated with the permeability imparting agent of the first embodiment and the nonwoven fabric manufacturing treatment agent of the second embodiment are used as top sheets for absorbent articles such as sanitary products, including disposable diapers and napkins. They can also be used in other applications requiring permeable sheets, such as food, medical, and industrial applications.

Claims

1. The compound comprises compound (A) represented by the following general formula (1) and compound (B) represented by the following general formula (2). A water permeability imparting agent comprising at least one selected from the compound (C) represented by the following general formula (3), the compound (D) represented by the following general formula (4), and inorganic phosphoric acid (salt) (IN), The acid value of the non-volatile component of the aforementioned water permeability imparting agent is 0.5 to 450 mg KOH / g. A water permeability imparter wherein the ratio of P1 to the sum of the peak areas P1 to P3 (P1 + P2 + P3) of the spectrum of the non-volatile components of the water permeability imparter measured by P-nuclear NMR is 40 to 100% [P1 / (P1 + P2 + P3)]. P1: Peak area within the range of 0 to 10 ppm P2: Peak area within the range of -25 to -3 ppm P3: Peak area within the range of -3 to 0 ppm 【Chemistry 1】 (In the formula, R １ is a branched hydrocarbon group having 6 to 22 carbon atoms. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. １ and M ２ Each of these is independently a hydrogen atom, an alkali metal, an ammonium compound, a phosphonium compound, an organic amine, or a quaternary ammonium compound. 【Chemistry 2】 (In the formula, R ２ and R ３ are each independently a hydrocarbon group having 6 to 22 carbon atoms, and at least one selected from R ２ and R ３ has a branch. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 20. M １ is a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine or a quaternary ammonium. When there are two (AO) ｍ in the molecule, they may be the same or different from each other.) 【Transformation 3】 (In the formula, R ４ is a hydrocarbon group having 6 to 22 carbon atoms. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. １ and M ２ Each of these is independently a hydrogen atom, an alkali metal, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. Q is M ２ or - (AO) ｍ R ５ That is. R ５ is a hydrocarbon group having 6 to 22 carbon atoms. Y is 1 or 2. M is present in the molecule. ２ or (AO) ｍ If there are two or more of them, they may be the same or different. Q is M ２ If R ４ It has a branch, and Q is -(AO) ｍ R ５ If R ４ and R ５ At least one of those selected has a branch. 【Chemistry 4】 (In the formula, R ６ , R ７ and R ８ Each of these is independently a hydrocarbon group having 6 to 22 carbon atoms, R ６ , R ７ and R ８ At least one selected from has branching. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. (AO) ｍ If there are two or more of them, they may be the same or different.

2. The water permeability imparting agent according to claim 1, wherein the dynamic surface tension at a lifetime of 1000 ms when it is an aqueous dispersion with 1% non-volatile content is 25 to 60 mN / m.

3. The compound (A) includes compounds in which m in the general formula (1) is an integer from 1 to 16. The compound (B) includes a compound in which at least one of the m in the general formula (2) is an integer from 1 to 16. The compound (C) includes a compound in which at least one of the m in the general formula (3) is an integer from 1 to 16. The water permeability imparting agent according to claim 1 or 2, wherein the compound (D) comprises a compound in which at least one of the m in the general formula (4) is an integer from 1 to 16.

4. The compound (A) is R in the general formula (1) １ It contains compounds having 8 to 16 carbon atoms. The compound (B) is R in the general formula (2). ２ and R ３ Each of these independently contains a compound having 8 to 16 carbon atoms. The compound (C) is R in the general formula (3). ４ and R ５ Each of these independently contains a compound having 8 to 16 carbon atoms. The compound (D) is R in the general formula (4). ６ , R ７ and R ８ A water permeability imparting agent according to any one of claims 1 to 3, wherein each of the compounds independently has 8 to 16 carbon atoms.

5. The water permeability imparter according to any one of claims 1 to 4, wherein the total ratio of compound (A), compound (B), compound (C), compound (D), and inorganic phosphoric acid (salt) (IN) to the nonvolatile content of the water permeability imparter is 5 to 95% by weight.

6. A water permeability imparting agent according to any one of claims 1 to 5, further comprising a nonionic surfactant (E).

7. A fiber to which a water permeability imparting agent according to any one of claims 1 to 6 has been applied.

8. A nonwoven fabric to which a water permeability imparting agent according to any one of claims 1 to 6 is applied.

9. An absorbent article comprising the nonwoven fabric described in claim 8.

10. A method for producing fibers, comprising the step of applying a water permeability imparting agent according to any one of claims 1 to 6 to raw fibers.

11. The compound comprises compound (A) represented by the following general formula (1) and compound (B) represented by the following general formula (2). A nonwoven fabric manufacturing treatment agent comprising at least one selected from a compound (C) represented by the following general formula (3), a compound (D) represented by the following general formula (4), and an inorganic phosphoric acid (salt) (IN), The acid value of the non-volatile components of the aforementioned nonwoven fabric manufacturing treatment agent is 0.5 to 450 mg KOH / g. A nonwoven fabric manufacturing treatment agent wherein the ratio of P1 to the sum of the peak areas P1 to P3 (P1 + P2 + P3) of the spectrum of the nonvolatile content of the nonwoven fabric manufacturing treatment agent measured by P-nuclear NMR is 40 to 100%. P1: Peak area within the range of 0 to 10 ppm P2: Peak area within the range of -25 to -3 ppm P3: Peak area within the range of -3 to 0 ppm 【Chemistry 1】 (In the formula, R １ is a branched hydrocarbon group having 6 to 22 carbon atoms. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. １ and M ２ Each of these is independently a hydrogen atom, an alkali metal, an ammonium compound, a phosphonium compound, an organic amine, or a quaternary ammonium compound. 【Chemistry 2】 (In the formula, R ２ and R ３ Each of these is independently a hydrocarbon group having 6 to 22 carbon atoms, R ２ and R ３ At least one selected from has branching. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. １ The molecule contains (AO). ｍ If there are two of them, they may be the same or different. 【Transformation 3】 (In the formula, R ４ is a hydrocarbon group having 6 to 22 carbon atoms. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. １ and M ２ Each of these is independently a hydrogen atom, an alkali metal, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. Q is M ２ or - (AO) ｍ R ５ That is. R ５ is a hydrocarbon group having 6 to 22 carbon atoms. Y is 1 or 2. M is present in the molecule. ２ or (AO) ｍ If there are two or more of them, they may be the same or different. Q is M ２ If R ４ It has a branch, and Q is -(AO) ｍ R ５ If R ４ and R ５ At least one of those selected has a branch. 【Chemistry 4】 (In the formula, R ６ , R ７ and R ８ Each of these is independently a hydrocarbon group having 6 to 22 carbon atoms, R ６ , R ７ and R ８ At least one selected from has branching. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer from 0 to 20. (AO) ｍ If there are two or more of them, they may be the same or different.

12. A fiber to which the nonwoven fabric manufacturing treatment agent described in claim 11 has been applied.

13. A nonwoven fabric that has been treated with the nonwoven fabric manufacturing treatment agent described in claim 11.

14. An absorbent article comprising the nonwoven fabric described in claim 13.

15. A method for producing fibers, comprising the step of applying the nonwoven fabric manufacturing treatment agent described in claim 11 to raw fibers.

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