Water permeability agents, treatment agents for nonwoven fabric manufacturing and their uses

Abstract

Provided are: a water permeability-imparting agent having excellent foam-preventive properties; and a treatment agent for use in the production of a nonwoven fabric.　This water permeability-imparting agent contains a compound (A) and a compound (B), and also contains at least one component selected from among a compound (C), a compound (D), and an inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content in the water permeability-imparting agent is 0.5-450 mgKOH / g, and the ratio [P1 / (P1+P2+P3)] of a peak area of the nonvolatile content in the water permeability-imparting agent as measured by P nuclear NMR is 40-100%.　This treatment agent for use in the production of a nonwoven fabric contains a compound (A) and a compound (B), and also contains at least one component selected from among a compound (C), a compound (D), and an inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content in the treatment agent for use in the production of a nonwoven fabric is 0.5-450 mgKOH / g, and the ratio [P1 / (P1+P2+P3)] of a peak area of the nonvolatile content in the water permeability-imparting agent as measured by P nuclear NMR is 40-100%.

Description

[Technical Field]

[0001] The present invention relates to a water-permeability imparting agent, a treatment agent for producing nonwoven fabrics, and the use thereof. [Background technology]

[0002] Generally, absorbent articles such as sanitary napkins and other sanitary napkins are often constructed with three layers: a top sheet made of a nonwoven fabric primarily composed of at least one thermoplastic resin fiber (e.g., polyolefin fiber, polyester fiber, etc.) that has been given water permeability; a back sheet made of a water-repellent material; and a material such as cotton pulp or a polymeric absorbent 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 body. The top sheet must have good water permeability, i.e., instantaneous water permeability, so that the time it takes for the liquid to be completely absorbed from the top sheet into the absorbent body inside is extremely short. To satisfy these required characteristics, for example, Patent Document 1 discloses the use of a synthetic fiber treatment agent. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japan Patent No. 2022-045722 Summary of the Invention [Problem to be solved by the invention]

[0004] The treatment agent described in Patent Document 1 is, for example, a treatment agent that is mainly composed of an alkyl phosphate salt and that also contains a nonionic surfactant or a cationic surfactant, but this has problems such as reduced workability due to foam flow-out during aqueous solution preparation and roller contamination by foam. An investigation into the cause of these problems revealed that treatment agents containing these components are prone to foaming and have high foam stability. Therefore, an object of the present invention is to provide a water-permeability imparting agent having excellent foam-suppressing properties, a fiber having the imparting agent attached thereto, a nonwoven fabric having the imparting agent attached thereto, an absorbent article including the nonwoven fabric, and a method for producing a fiber using the imparting agent. Another object of the present invention is to provide a treatment agent for producing nonwoven fabrics having excellent foam-suppressing properties, fibers having the treatment agent attached thereto, nonwoven fabrics having the treatment agent attached thereto, absorbent articles comprising the nonwoven fabrics, and a method for producing fibers using the treatment agent. [Means for solving the problem]

[0005] As a result of intensive research into solving the above-mentioned problems, the present inventors have found that, as a first aspect, the problems can be solved by a water-permeability-imparting agent that includes a specific compound (A) and a specific compound (B), and at least one selected from a specific compound (C), a specific compound (D), and an inorganic phosphate (salt) (IN), wherein the acid value of the non-volatile content of the water-permeability-imparting agent is 0.5 to 450 mg KOH / g, and the ratio of specific peak areas P1 to P3 (P1 / (P1+P2+P3)) in a spectrum measured by P nuclear NMR of the non-volatile content of the water-permeability-imparting agent is 40 to 100%. In addition, the inventors have found that, in a second aspect, the above-mentioned problem can be solved by a treatment agent for the production of nonwoven fabric, which comprises a specific compound (A) and a specific compound (B), and at least one selected from a specific compound (C), a specific compound (D), and an inorganic phosphoric acid (salt) (IN), wherein the acid value of the nonvolatile content of the treatment agent for the production of nonwoven fabric is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum (P1+P2+P3) of specific peak areas P1 to P3 in a spectrum measured by P nuclear NMR of the nonvolatile content of the treatment agent for the production of nonwoven fabric, [P1 / (P1+P2+P3)]], is 40 to 100%.

[0006] That is, the present invention includes the following aspects. <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 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 phosphate (salt) (IN), wherein the acid value of the non-volatile content of the water-permeability-imparting agent is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum (P1+P2+P3) of the following peak areas P1 to P3 in a spectrum measured by P nuclear NMR of the non-volatile content of the water-permeability-imparting agent [P1 / (P1+P2+P3)] 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 [ka] (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 of 0 to 20. M 1 and M 2 are each independently a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium. [ka] (In the formula, R 2 and R 3 are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R 2 and R 3 At least one selected from the following 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, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. m If there are two, they may be the same or different.) [ka] (In the formula, R4 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 of 0 to 20. M 1 and M 2 are each independently a hydrogen atom, an alkali metal, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. 2 Or - (AO) m R 5 R 5 is a hydrocarbon group having 6 to 22 carbon atoms. Y is 1 or 2. M 2 Or (AO) m When there are two or more, they may be the same or different. 2 If R 4 has a branch and Q is -(AO) m R 5 If R 4 and R 5 At least one selected from has a branch. [ka] (In the formula, R 6 , R 7 and R 8 are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R 6 , R 7 and R 8 At least one selected from the following has a branch. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 20. m If there are two or more, they may be the same or different.) <2> When dispersed in water with a non-volatile content of 1%, the dynamic surface tension is 25 to 60 mN / m over a lifespan of 1000 ms. <1> The water permeability imparting agent according to claim 1. <3> the compound (A) includes a compound represented by the general formula (1) where m is an integer of 1 to 16, The compound (B) includes a compound in which at least one of m in the general formula (2) is an integer of 1 to 16, The compound (C) includes a compound in which at least one of m in the general formula (3) is an integer of 1 to 16, The compound (D) includes a compound in which at least one of m in the general formula (4) is an integer of 1 to 16. <1> or <2> The water permeability imparting agent according to claim 1. <4> The compound (A) is R 1 includes compounds having 8 to 16 carbon atoms, The compound (B) is R 2 and R 3 each independently contains 8 to 16 carbon atoms, The compound (C) is represented by R 4 and R 5 each independently contains 8 to 16 carbon atoms, The compound (D) is represented by R 6 , R 7 and R 8 each independently having 8 to 16 carbon atoms, <1> ~ <3> The water permeability imparting agent according to any one of the preceding items. <5> the total proportion of the compound (A), the compound (B), the compound (C), the compound (D) and the inorganic phosphate (salt) (IN) in the non-volatile content of the water permeability imparting agent is 5 to 95% by weight; <1> ~ <4> The water permeability imparting agent according to any one of the preceding items. <6> Further containing a nonionic surfactant (E), <1> ~ <5> The water permeability imparting agent according to any one of the preceding items. <7> <1> ~ <6> 1. A fiber to which the water permeability imparting agent according to any one of the above items is imparted. <8> <1> ~ <6> A nonwoven fabric to which the water permeability imparting agent according to any one of the above items is imparted. <9> <8> A water-absorbent article comprising the nonwoven fabric described in . <10> For raw fiber, <1> ~ <6> 10. A method for producing a fiber, comprising the step of applying the water permeability imparting agent according to any one of claims 1 to 9. <11> A treatment agent for nonwoven fabric production, comprising a compound (A) represented by the following general formula (1) and a compound (B) represented by the following general formula (2), and 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), wherein the acid value of the nonvolatile content of the treatment agent for nonwoven fabric production is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum (P1+P2+P3) of the peak areas P1 to P3 listed below in a spectrum measured by P nuclear NMR of the nonvolatile content of the treatment agent for nonwoven fabric production [P1 / (P1+P2+P3)] 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 [ka] (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 of 0 to 20. M 1 and M 2 are each independently a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium. [ka] (In the formula, R 2 and R 3 are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R 2 and R 3 At least one selected from the following 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, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. m If there are two, they may be the same or different.) [ka] (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 of 0 to 20. M 1 and M 2 are each independently a hydrogen atom, an alkali metal, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. 2 Or - (AO) m R 5 R 5 is a hydrocarbon group having 6 to 22 carbon atoms. Y is 1 or 2. M 2 Or (AO) m When there are two or more, they may be the same or different. 2 If R 4 has a branch and Q is -(AO) m R 5 If R 4 and R 5 At least one selected from has a branch. [ka] (In the formula, R 6 , R 7 and R 8 are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R 6 , R 7 and R 8 At least one selected from the following has a branch. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 20. m If there are two or more, they may be the same or different.) <12> When dispersed in water with a non-volatile content of 1%, the dynamic surface tension is 25 to 60 mN / m over a lifespan of 1000 ms. <11> The treatment agent for producing nonwoven fabrics according to claim 1. <13> the compound (A) includes a compound represented by the general formula (1) where m is an integer of 1 to 16, The compound (B) includes a compound in which at least one of m in the general formula (2) is an integer of 1 to 16, The compound (C) includes a compound in which at least one of m in the general formula (3) is an integer of 1 to 16, The compound (D) includes a compound in which at least one of m in the general formula (4) is an integer of 1 to 16. <11> or <12> The treatment agent for producing nonwoven fabrics according to claim 1. <14> The compound (A) is R 1 includes compounds having 8 to 16 carbon atoms, The compound (B) is R 2 and R 3 each independently contains 8 to 16 carbon atoms, The compound (C) is represented by R 4 and R 5 each independently contains 8 to 16 carbon atoms, The compound (D) is represented by R 6 , R 7 and R 8 each independently having 8 to 16 carbon atoms, <11> ~ <13> 10. The treatment agent for producing nonwoven fabric according to claim 9, wherein <15> the total proportion of the compound (A), the compound (B), the compound (C), the compound (D) and the inorganic phosphoric acid (salt) (IN) in the non-volatile components of the treatment agent for production of a nonwoven fabric is 5 to 95% by weight; <11> ~ <14> 10. The treatment agent for producing nonwoven fabric according to claim 9, wherein <16> Further containing a nonionic surfactant (E), <11> ~ <15> 10. The treatment agent for producing nonwoven fabric according to claim 9, wherein <17> <11> ~ <16> 2. Fibers to which the treatment agent for nonwoven fabric production described in any one of 1 to 10 has been applied. <18> <11> ~ <16> A nonwoven fabric to which the treating agent for nonwoven fabric production described in any one of the above items has been applied. <19> <18> A water-absorbent article comprising the nonwoven fabric described in . <20> For raw fiber, <11> ~ <16> 2. A method for producing fibers, comprising the step of applying the treatment agent for producing nonwoven fabric according to any one of claims 1 to 11. [Effects of the Invention]

[0007] The water permeability imparting agent of the present invention has excellent foam suppressing properties. The treating agent for producing nonwoven fabric of the present invention has excellent anti-foaming properties. DETAILED DESCRIPTION OF THE INVENTION

[0008] The water-permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment contain a compound (A) represented by the above general formula (1) and a compound (B) represented by the above general formula (2), and also contain at least one selected from a compound (C) represented by the above general formula (3), a compound (D) represented by the above general formula (4), and an inorganic phosphate (salt) (IN). These are explained in detail below.

[0009] [Compound (A)] The compound (A) is a compound represented by the above general formula (1). In formula (1), R 1 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 even more preferably 12, and the lower limit of the carbon number is preferably 6, more preferably 7, and even more preferably 8. In terms of repeated water permeability, the upper limit of the carbon number is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the carbon number is preferably 10, more preferably 11, and even more preferably 12. For example, 6 to 16 is preferable in terms of instantaneous water permeability, and 10 to 20 is preferable in terms of repeated water permeability. Examples of the hydrocarbon group include an alkyl group.

[0010] In formula (1), 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-suppressing properties, the upper limit of the number of repetitions m is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of repetitions m is preferably 3, more preferably 5, and even more preferably 7. 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, and even more preferably 7, and the lower limit of the number of repetitions m is preferably 0, more preferably 1, and even more preferably 2. In terms of foam-suppressing properties, the number of repetitions m is preferably 3 to 20, and in terms of instantaneous water permeability and repeated water permeability, 0 to 9 is more preferable. From the viewpoint of foam suppression, (AO)m preferably contains at least one oxyalkylene unit selected from oxyethylene units and oxypropylene units, more preferably contains oxyethylene units, and even more preferably contains 50 mol % or more of oxyethylene units.

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

[0012] Specific examples of the compound (A) include, but are not limited to, mono 2-ethylhexyl phosphate, mono 2-ethylhexyl phosphate monopotassium salt, mono 2-ethylhexyl phosphate dipotassium salt, polyoxyethylene 8-mol adduct mono 2-ethylhexyl phosphate, polyoxyethylene 8-mol adduct mono 2-ethylhexyl phosphate monopotassium salt, polyoxyethylene 8-mol adduct mono 2-ethylhexyl phosphate dipotassium salt, monoisolauryl phosphate, monoisolauryl phosphate monopotassium salt, monoisolauryl phosphate dipotassium salt, polyoxyethylene Examples of such phosphates include 9-mol-added monoisolauryl phosphate, 9-mol-added monoisolauryl phosphate monopotassium salt, 9-mol-added monoisolauryl phosphate dipotassium salt, monoisostearyl phosphate, monoisostearyl phosphate monopotassium salt, monoisostearyl phosphate dipotassium salt, 15-mol-added monoisostearyl phosphate, 15-mol-added monoisostearyl phosphate monopotassium salt, and 15-mol-added monoisostearyl phosphate dipotassium salt. Among these, in terms of instantaneous water permeability and repeated water permeability, mono-2-ethylhexyl phosphate monopotassium salt, mono-2-ethylhexyl phosphate dipotassium salt, monoisolauryl phosphate monopotassium salt, monoisolauryl phosphate dipotassium salt, monoisostearyl phosphate monopotassium salt, and monoisostearyl phosphate dipotassium salt are preferred. Furthermore, from the viewpoint of foam-suppressing properties, polyoxyethylene 8-mol-added mono-2-ethylhexyl phosphate monopotassium salt, polyoxyethylene 8-mol-added mono-2-ethylhexyl phosphate dipotassium salt, polyoxyethylene 9-mol-added monoisolauryl phosphate monopotassium salt, polyoxyethylene 9-mol-added monoisolauryl phosphate dipotassium salt, polyoxyethylene 15-mol-added monoisostearyl phosphate monopotassium salt, and polyoxyethylene 15-mol-added monoisostearyl phosphate dipotassium salt are preferred.

[0013] [Compound (B)] The 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, and even more preferably 12, and the lower limit of the number of carbon atoms is preferably 6, more preferably 7, and even more preferably 8. In terms of repeated water permeability, the upper limit of the number of carbon atoms is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of carbon atoms is preferably 10, more preferably 11, and even more preferably 12. For example, 6 to 16 is preferable in terms of instantaneous water permeability, and 10 to 20 is preferable in terms of repeated water permeability. R 2 and R 3 At least one selected from has a branch, and R 2 and R 3 If the copolymer has a branch, this is preferred in terms of foam suppression. 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. From the viewpoint of foam-suppressing properties, the upper limit of the number of repetitions m is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of repetitions m is preferably 3, more preferably 5, and even more preferably 7. Furthermore, from the viewpoints of instantaneous water permeability and repeated water permeability, the upper limit of the number of repetitions m is preferably 9, more preferably 8, and even more preferably 7, and the lower limit of the number of repetitions m is preferably 0, more preferably 1, and even more preferably 2. For example, from the viewpoint of foam-suppressing properties, it is preferably 3 to 20, and from the viewpoints of instantaneous water permeability and repeated water permeability, it is more preferably 0 to 9. When (AO) is present in the molecule m If there are two, they may be the same or different.

[0015] In formula (2), M 1 is a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium.1 is preferably a hydrogen atom or an alkali metal in terms of emulsion stability and antistatic properties. Examples of the alkali metal include potassium, sodium, and lithium, with potassium or sodium being preferred in terms of emulsion stability and antistatic properties. Examples of organic amines include alkanolamines such as ethanolamine, diethanolamine, and triethanolamine, and triethylamine. Examples of quaternary ammonium include alkyltrimethylammonium and dialkyldimethylammonium.

[0016] Specific examples of the compound (B) include, but are not limited to, di-2-ethylhexyl phosphate, di-2-ethylhexyl phosphate potassium salt, di(8-mol-added polyoxyethylene mono-2-ethylhexyl) phosphate, di(8-mol-added polyoxyethylene mono-2-ethylhexyl) phosphate potassium salt, diisolauryl phosphate, diisolauryl phosphate potassium salt, di(9-mol-added polyoxyethylene monoisolauryl) phosphate, di(9-mol-added polyoxyethylene monoisolauryl) phosphate, 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 water permeability and repeated water permeability. Furthermore, 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 in terms of foam suppression.

[0017] [Compound (C)] Compound (C) is a compound represented by the above general formula (3), and it is preferable that the water-permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment contain compound (C) in terms of foam-suppressing properties. 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, and even more preferably 12, and the lower limit of the number of carbon atoms is preferably 6, more preferably 7, and even more preferably 8. In terms of repeated water permeability, the upper limit of the number of carbon atoms is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of carbon atoms is preferably 10, more preferably 11, and even more preferably 12. For example, 6 to 16 is preferable in terms of instantaneous water permeability, and 10 to 20 is preferable in terms of repeated water permeability. Q is M 2 If R 4 has a branch and Q is -(AO) m R 5 If R 4 and R 5 At least one selected from the group consisting of -(AO) m R 5 If R 4 and R 5 If the copolymer has a branch, it is preferable in terms of foam suppression. R 4 and R 5 may be the same or different.

[0018] In formula (3), 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. From the viewpoint of foam-suppressing properties, the upper limit of the number of repetitions m is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of repetitions m is preferably 3, more preferably 5, and even more preferably 7. Furthermore, from the viewpoints of instantaneous water permeability and repeated water permeability, the upper limit of the number of repetitions m is preferably 9, more preferably 8, and even more preferably 7, and the lower limit of the number of repetitions m is preferably 0, more preferably 1, and even more preferably 2. For example, from the viewpoint of foam-suppressing properties, it is preferably 3 to 20, and from the viewpoints of instantaneous water permeability and repeated water permeability, it is more preferably 0 to 9. (AO) m If there are two, they may be the same or different.

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

[0020] In equation (3), Q is M 2 Or - (AO) m R 5 is. In formula (3), Y is 1 or 2. M in the molecule 2When there are two or more, they may be the same or different.

[0021] Specific examples of the compound (C) include, but are not limited to, pyro-2-ethylhexyl phosphate (potassium salt), pyro(2-ethylhexyl with 8 moles of polyoxyethylene added) phosphate (potassium salt), pyroisolauryl phosphate (potassium salt), pyro(isolauryl with 9 moles of polyoxyethylene added) phosphate (potassium salt), pyroisostearyl phosphate (potassium salt), pyro(isostearyl with 15 moles of polyoxyethylene added) phosphate (potassium salt), etc. Among these, pyro-2-ethylhexyl phosphate (potassium salt), pyroisolauryl phosphate (potassium salt), and pyroisostearyl phosphate (potassium salt) are preferred in terms of instantaneous water permeability and repeated water permeability. In terms of foam-suppressing properties, pyro(8-mol polyoxyethylene-added 2-ethylhexyl)phosphate (potassium salt), pyro(9-mol polyoxyethylene-added isolauryl)phosphate (potassium salt), and pyro(15-mol polyoxyethylene-added isostearyl)phosphate (potassium salt) are preferred.

[0022] [Compound (D)] The compound (D) is a compound represented by the above general formula (4), and the water-permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment preferably contain the compound (D) in terms of foam-inhibiting properties. In formula (4), R 6 , R 7 and R 8 are each independently a hydrocarbon group having 6 to 22 carbon atoms, and from the viewpoint of instantaneous water permeability, the upper limit of the number of carbon atoms is preferably 16, more preferably 14, and even more preferably 12, and the lower limit of the number of carbon atoms is preferably 6, more preferably 7, and even more preferably 8. Furthermore, from the viewpoint of repeated water permeability, the upper limit of the number of carbon atoms is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of carbon atoms is preferably 10, more preferably 11, and even more preferably 12. For example, 6 to 16 is preferable in terms of instantaneous water permeability, and 10 to 20 is preferable in terms of repeated water permeability. R6 , R 7 and R 8 At least one selected from has a branch, and R 6 , R 7 and R 8 If the copolymer has a branch, it is preferable in terms of foam suppression. R 6 , R 7 and R 8 may be the same or different.

[0023] In formula (4), 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-suppressing properties, the upper limit of the number of repetitions m is preferably 20, more preferably 18, and even more preferably 16, and the lower limit of the number of repetitions m is preferably 3, more preferably 5, and even more preferably 7. 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, and even more preferably 7, and the lower limit of the number of repetitions m is preferably 0, more preferably 1, and even more preferably 2. For example, in terms of foam-suppressing properties, the number is preferably 3 to 20, and in terms of instantaneous water permeability and repeated water permeability, 0 to 9 is more preferable. In the molecule (AO) m When there are two or more, they may be the same or different.

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

[0025] [Inorganic phosphate (salt) (IN)] The water-permeability imparting agent of the first embodiment and the treating agent for production of nonwoven fabric of the second embodiment preferably contain inorganic phosphoric acid (salt) (IN) from the viewpoint of foam suppression. The inorganic phosphate (salt) (IN) is at least one selected from phosphoric acid, metal dihydrogen phosphate, dimetal hydrogen phosphate, and trimetal phosphate. Specific examples of the monometal dihydrogen phosphate include monopotassium dihydrogen phosphate and monosodium dihydrogen phosphate, examples of the dimetal hydrogen phosphate include dipotassium hydrogen phosphate and disodium hydrogen phosphate, and examples of the trimetal phosphate include tripotassium phosphate and trisodium phosphate.

[0026] [Nonionic surfactant (E)] The water permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment preferably contain a nonionic surfactant (E) from the viewpoint of repeated water permeability and emulsion 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 ethers (E2), polyoxyalkylene hydrogenated castor oil ethers (E3), polyoxyalkylene aliphatic alcohol ethers (E4), PEG esters (E5), and polycarboxylic acid esters (E6).

[0027] The ester compound (E1) is a compound 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.

[0028] The polyhydric alcohol that is a constituent element of the ester compound (E1) is not particularly limited, but sorbitol and glycerin are preferred in terms of instantaneous water permeability and anti-foaming properties. The fatty acid that is a constituent element of the ester compound (E1) is not particularly limited, but saturated and / or unsaturated fatty acids having 12 to 18 carbon atoms are preferred in terms of instantaneous water permeability and foam suppressing properties.

[0029] The ester compound (E1) is not particularly limited, but from the viewpoints of instantaneous water permeability and foam-suppressing property, sorbitan monoesters, sorbitan diesters, sorbitan triesters, glycerin monoesters, glycerin diesters, and polyglycerin esters are preferred, and sorbitan monoesters are 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 tristearate, 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. 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. The polyoxyalkylene castor oil ether (E2) is not particularly limited, but examples thereof include polyoxyethylene castor oil ether (polyoxyethylene (1 to 25 moles) 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. The polyoxyethylene hydrogenated castor oil ether (E3) is not particularly limited, but examples thereof include polyoxyethylene hydrogenated castor oil ether (polyoxyethylene (1 to 25 moles) hydrogenated castor oil ether).

[0032] The polyoxyalkylene aliphatic alcohol ether (E4) is a compound 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 an aliphatic polyhydric alcohol. The aliphatic monohydric alcohol constituting the polyoxyalkylene aliphatic alcohol ether (E4) is not particularly limited, but from the viewpoint 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. The aliphatic polyhydric alcohol constituting the polyoxyalkylene aliphatic alcohol ether (E4) is not particularly limited, but from the viewpoint of instantaneous water permeability, alcohols having 8 to 18 carbon atoms are preferred, and glycerin, sorbitol, sorbitan, and trimethylolpropane are more preferred. The number of moles of alkylene oxide added to the polyoxyalkylene aliphatic alcohol ether (E4) is preferably 1 to 100 moles from the viewpoint 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, it is more preferably 2 to 70 moles, and even more preferably 3 to 50 moles. The proportion of ethylene oxide relative to the total alkylene oxide is not particularly limited, but from the viewpoint 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. From the viewpoint of foam suppression, the upper limit of the proportion of ethylene oxide 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, and examples thereof include polyoxyalkylene aliphatic alcohol ethers (polyoxyethylene (1 to 20 moles) stearyl ether, polyoxyethylene (1 to 20 moles) oleyl ether, polyoxyalkylene (1 to 20 moles) palmityl ether, and polyoxyalkylene (1 to 20 moles) lauryl ether. The polyoxyalkylene group in the polyoxyalkylene aliphatic alcohol ether (E4) may be a polyoxyalkylene group composed of oxyethylene units and / or oxypropylene units, and preferably contains oxyethylene units. When the polyoxyalkylene group contains oxyethylene units and oxypropylene units, the addition type of the oxyethylene units and oxypropylene units may be block or random.

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

[0035] The polycarboxylic acid ester (E6) is a compound having a structure in which a polycarboxylic acid and a polyol are ester-bonded. The polycarboxylic acid is preferably a divalent or higher carboxylic acid having 10 to 66 carbon atoms. Examples of polycarboxylic acids include sebacic acid, oleic acid dimer, erucic acid dimer, oleic acid trimer, and erucic acid trimer. Of the polycarboxylic acids, dimer acids of unsaturated fatty acids having 18 to 22 carbon atoms are preferred, and dimer acids of unsaturated fatty acids having 18 carbon atoms are more preferred. The polycarboxylic acid may be either an aliphatic polycarboxylic acid or an aromatic polycarboxylic acid, and is preferably an aliphatic polycarboxylic acid. The polyol is a dihydric or higher alcohol having an oxyalkylene group having 2 to 3 carbon atoms in the molecule. The polyol is not particularly limited as long as it is a dihydric or higher alcohol and has a (poly)oxyalkylene group in the molecule. Examples of the polyol include polyalkylene glycols composed of oxyethylene units and / or oxypropylene units, polyoxyalkylene sorbitan, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene glycerin, polyoxyalkylene polyglycerin, and polyoxyalkylene polyglycerin esters. Among these, polyalkylene glycols composed of oxyethylene units and / or oxypropylene units are preferred. Examples of polyalkylene glycols composed of oxyethylene units and / or oxypropylene units include polyoxyethylene glycol, polypropylene glycol, and polyoxyethylene polyoxypropylene glycol. The polyoxyethylene polyoxypropylene glycol may be a block or random product. Examples of the polyalkylene glycol composed of oxyethylene units and / or oxypropylene units include polyoxyethylene glycol. The number average molecular weight of the polyalkylene glycol is preferably 100 to 10,000, more preferably 200 to 2,000, and even more preferably 400 to 1,000.

[0036] [Other ingredients] The water permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment may contain, as other components, the following anionic surfactant (F), amphoteric surfactant (G), and modified silicone (H), in order to exert the effects of the present invention. 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 sulfating and neutralizing a polyhydric alcohol fatty acid ester. The sulfation method is not particularly limited, and known methods using fuming sulfuric acid, concentrated sulfuric acid, chlorosulfonic acid, sulfur trioxide gas, etc. can be used. The neutralization method is not particularly limited, and known methods can be used. Examples of 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, alkaline earth metal oxides and hydroxides such as calcium oxide, calcium hydroxide, magnesium oxide, and magnesium hydroxide, ammonia, mono-, di-, and trialkanolamines having 2 to 4 carbon atoms in the hydroxyalkyl chain, and primary, secondary, and tertiary alkylamines having 1 to 4 carbon atoms in the alkyl chain. Two or more basic substances may be used in combination. The fatty acid used in the synthesized polyhydric alcohol fatty acid ester essentially contains an unsaturated fatty acid, and may also contain a saturated fatty acid, a hydroxy fatty acid, a hydroxy unsaturated fatty acid, or the like. As the alkyl sulfate salt, a polyhydric alcohol fatty acid ester sulfate salt is preferred. Dialkyl sulfosuccinate salts are dialkyl esters of succinic acid having a sulfonate group at the α-position. The alkyl group constituting the dialkyl ester preferably has 6 to 18 carbon atoms. 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. For example, 8 to 18 is more preferable, and 10 to 13 is even more preferable.

[0037] [Water permeability imparting agent and treatment agent for nonwoven fabric production] The water-permeability imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment contain a compound (A) represented by the general formula (1) above and a compound (B) represented by the general formula (2) above, and at least one selected from a compound (C) represented by the general formula (3), a compound (D) represented by the general formula (4) above, and an inorganic phosphoric acid (salt) (IN), and the non-volatile components of the water-permeability imparting agent and the treatment agent for nonwoven fabric production described below each have an acid value of 0.5 to 450 mg KOH / g, and the non-volatile components of the water-permeability imparting agent and the treatment agent for nonwoven fabric production described below are measured by P nuclear NMR, respectively, and the ratio of P1 to the sum (P1+P2+P3) of the following peak areas P1 to P3 [P1 / (P1+P2+P3)] is 40 to 100%. The water-permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment are not particularly limited, but it is believed that by satisfying these requirements, the foam film will be weakened and excellent foam-suppressing properties will be achieved.

[0038] The acid value of the nonvolatile content of the water permeability imparting agent of the first embodiment and the nonvolatile content of the treating agent for nonwoven fabric production of the second embodiment are each 0.5 to 450 mgKOH / g. It is believed that an acid value of 0.5 to 450 mgKOH / g reduces foam film stability and results in excellent foam-suppressing properties. Furthermore, an acid value of less than 0.5 mgKOH / g reduces foam-suppressing properties, while an acid value of more than 450 mgKOH / g results in insufficient instantaneous and repeated water permeability. The upper limit of the acid value of the nonvolatile content of the water-permeability imparting agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment is preferably 400 mgKOH / g, more preferably 300 mgKOH / g, and even more preferably 200 mgKOH / g, from the viewpoint of antistatic properties. On the other hand, the lower limit of the acid value is preferably 5 mgKOH / g, more preferably 10 mgKOH / g, and even more preferably 15 mgKOH / g, from the viewpoint of foam suppression. Furthermore, for example, a range of 5 to 300 mgKOH / g is preferred, and more preferably 10 to 200 mgKOH / g is more preferred. In addition, the non-volatile content of the water-permeability imparting agent and the non-volatile content of the treatment agent for nonwoven fabric production in the present invention refers to the residue on the aluminum sheet when 2.0 to 3.0 g of the water-permeability imparting agent or the treatment agent for nonwoven fabric production is spread evenly on an aluminum sheet, dried at 110°C under irradiation with an infrared lamp, and the fluctuation range of the volatile content over 150 seconds reaches 0.15%.

[0039] The nonvolatile content of the water-permeability agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment are measured by P nuclear NMR, and the ratio of P1 to the sum (P1+P2+P3) of the following peak areas P1 to P3 in the spectrum [P1 / (P1+P2+P3)] 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 Compounds that exhibit peaks in the spectrum from -25 to 10 ppm tend to be mainly attributed to inorganic phosphoric acid or compound (A), compound (B), compound (D), and compound (C) in this order from the low magnetic field side. It is believed that if [P1 / (P1+P2+P3)] is 40 to 100%, foam film stability will decrease, resulting in excellent foam-suppressing properties. If P1 / (P1+P2+P3) is less than 40%, instantaneous water permeability and repeated water permeability will be insufficient. The upper limit of the P1 ratio is preferably 90%, more preferably 80%, and even more 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 even more preferably 50%, in terms of foam-suppressing properties. Also, for example, 40 to 90% is preferred, more preferably 45 to 85%, and even more preferably 50 to 75% is preferred. The peak areas of P1 to P3 are measured according to the method described in the Examples.

[0040] When the water permeability imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment are each dispersed in water with a nonvolatile content of 1%, the dynamic surface tension at a lifetime of 1000 ms is preferably 25 to 60 mN / m in terms of processability, instantaneous water permeability, and repeated water permeability. From the viewpoint of processability, 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. Meanwhile, 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, from the viewpoint of instantaneous water permeability, a range of 25.5 to 58 mN / m is more preferable, a range of 26 to 55 mN / m is even more preferable, and a range of 26.5 to 50 mN / m is particularly preferable. The dynamic surface tension of the water-permeable agent and the treatment agent for nonwoven fabric production in an aqueous dispersion with a nonvolatile content of 1% at a life time of 1000 ms was measured by the method described in the Examples.

[0041] The total proportion of compound (A), compound (B), compound (C), compound (D), and inorganic phosphate (salt) (IN) in the non-volatile content of the water permeability imparting agent of the first embodiment and the non-volatile content of the treatment agent for nonwoven fabric production 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 proportion is more preferably 90% by weight, even more preferably 80% by weight, and particularly preferably 70% by weight. Meanwhile, the lower limit of this proportion is more preferably 10% by weight, even more preferably 15% by weight, and particularly preferably 20% by weight. Furthermore, for example, 10 to 90% by weight is more preferable, and 15 to 80% by weight is even more preferable. Furthermore, for example, 20 to 90% by weight is preferable in terms of instantaneous water permeability and foam suppression, and 10 to 70% is preferable in terms of repeated water permeability.

[0042] The proportion of compound (A) in the nonvolatile content of the water permeability imparting agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment is not particularly limited, but is preferably 13 to 73 wt% 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 proportion is more preferably 73 wt%, even more preferably 45 wt%, and particularly preferably 30 wt%. Meanwhile, the lower limit of this proportion is more preferably 13 wt%, even more preferably 22 wt%, and particularly preferably 25 wt%. Furthermore, for example, 22 to 45 wt% is more preferred, and 25 to 30 wt% is even more preferred.

[0043] The proportion of compound (B) in the nonvolatile content of the water permeability imparting agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment is not particularly limited, but is preferably 13 to 56 wt% 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 proportion is more preferably 56 wt%, even more preferably 45 wt%, and particularly preferably 40 wt%. Meanwhile, the lower limit of this proportion is more preferably 13 wt%, even more preferably 20 wt%, and particularly preferably 30 wt%. Furthermore, for example, 20 to 45 wt% is more preferable, and 30 to 40 wt% is even more preferable.

[0044] The proportion of compound (C) in the nonvolatile content of the water permeability imparting agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment is not particularly limited, but is preferably 0 to 61 wt% 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 proportion is more preferably 61 wt%, even more preferably 40 wt%, and particularly preferably 37 wt%. Meanwhile, the lower limit of this proportion is more preferably 2 wt%, even more preferably 5 wt%, and particularly preferably 20 wt%. Furthermore, for example, 2 to 50 wt% is more preferable, and 5 to 40 wt% is even more preferable.

[0045] The proportion of compound (D) in the nonvolatile content of the water permeability imparting agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment is not particularly limited, but is preferably 0 to 2 wt% 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 proportion is more preferably 2 wt%, even more preferably 1 wt%, and particularly preferably 0.5 wt%. Meanwhile, the lower limit of this proportion is more preferably 0.1 wt%, even more preferably 0.2 wt%, and particularly preferably 0.4 wt%. Furthermore, for example, 0.1 to 2 wt% is more preferred, and 0.2 to 1 wt% is even more preferred.

[0046] The proportion of inorganic phosphoric acid (salt) (IN) in the nonvolatile content of the water permeability imparting agent of the first embodiment and the nonvolatile content of the treatment agent for nonwoven fabric production of the second embodiment is not particularly limited, but is preferably 0 to 8 wt% 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 proportion is more preferably 8 wt%, even more preferably 1 wt%, and particularly preferably 0.5 wt%. Meanwhile, the lower limit of this proportion is more preferably 0 wt%, even more preferably 0.1 wt%, and particularly preferably 0.2 wt%. Furthermore, for example, 0 to 1 wt% is more preferable, and 0.1 to 0.5 wt% is even more preferable.

[0047] The ratio of compounds (A), (B), (C), and (D) used in the water permeability imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment can be changed by changing the ratio of alcohol to tetraphosphorus 10 oxide. Furthermore, the proportion of compound (A) can be increased by using phosphoric acid in the reaction.

[0048] The proportion of the nonionic surfactant (E) in the nonvolatile content of the water permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment is preferably 5 to 95% by weight in terms of repeated water permeability, emulsion stability, and antistatic properties. The upper limit of this proportion 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 proportion is more preferably 10% by weight, even more preferably 20% by weight, and particularly preferably 30% by weight. Furthermore, for example, 10 to 90% by weight is more preferable, and 20 to 85% by weight is even more preferable. Furthermore, for example, 20 to 90% by weight is preferable in terms of instantaneous water permeability and foam suppression, and 10 to 70% is preferable in terms of repeated water permeability.

[0049] The proportion of the anionic surfactant (F) in the nonvolatile components of the water permeability imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment is preferably 5 to 95% by weight, in terms of repeated water permeability, emulsion stability, and antistatic properties. The upper limit of this proportion is more preferably 90% by weight, even more preferably 85% by weight, and particularly preferably 80% by weight. Meanwhile, the lower limit of this proportion 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 preferable, and 10 to 85% by weight is even more preferable.

[0050] The water-permeability imparting agent of the first aspect is not particularly limited as long as it imparts water permeability to an object, but it may be one that temporarily imparts water permeability to an object during the manufacturing process of fibers, nonwoven fabrics, etc., or one that imparts water permeability to a final product to which the water-permeability imparting agent has been applied. For example, the water-permeability imparting agent may be attached to fibers to produce a nonwoven fabric, and then the nonwoven fabric may be used to impart water permeability to an absorbent article.

[0051] The treating agent for nonwoven fabric production of the second aspect is not particularly limited as long as it is used in the production of nonwoven fabric, but it may be one used in the production of nonwoven fabric described below. The treating agent for nonwoven fabric production improves the processability of nonwoven fabric production by adhering the treating agent to fibers. For example, it can be used to suppress static electricity generation when passing through a card or to impart hydrophilicity during spunlace.

[0052] [Fibers and fiber manufacturing methods] The fiber of the present invention is obtained by applying the water permeability imparting agent or the treatment agent for nonwoven fabric production to a fiber body. The fiber of the present invention may be a short fiber or a long fiber, and is preferably a short fiber in terms of instantaneous water permeability and repeated water permeability. The deposition rate of the nonvolatile components of the water permeability imparting agent or the treating agent for nonwoven fabric production on the fiber body is preferably 0.03 to 2% by weight, more preferably 0.1 to 1% by weight, based on the fiber body in terms of antistatic properties, instantaneous water permeability, and repeated water permeability.

[0053] The fiber manufacturing method of the present invention is not particularly limited as long as it includes a step of applying the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment to raw fiber, and known methods can be used for the other steps. Raw fiber means fiber to which the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment has not been applied. By applying the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment to fiber, fiber of stable quality can be efficiently produced.

[0054] Examples of the fiber body include polyolefin fibers, polyester fibers, nylon fibers, vinyl chloride fibers, and composite fibers made of two or more thermoplastic resins. Examples of composite fiber combinations include polyolefin resin / polyolefin resin, such as high-density polyethylene / polypropylene, linear high-density polyethylene / polypropylene, low-density polyethylene / polypropylene, a binary or terpolymer of propylene and another α-olefin / 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 copolymer polyester / polyethylene terephthalate. Other examples include fibers made of polyamide resin / polyester resin, polyolefin resin / polyamide resin, and the like. Among these fiber bodies, the water permeability imparting agent of the first aspect and the treatment agent for nonwoven fabric production of the second aspect are suitable for 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), because soft feel is preferred, and polyolefin fibers are even more suitable. Furthermore, it is preferable that the fiber body is a fiber for producing nonwoven fabric in terms of water permeability.

[0055] The cross-sectional structure of the fiber can be exemplified by sheath-core, parallel, eccentric sheath-core, multilayer, radial, or sea-island structures. However, from the viewpoint of productivity in the fiber manufacturing process and ease of nonwoven fabric processing, the sheath-core structure including eccentricity or the parallel structure is preferred. The cross-sectional shape can be circular or irregular. In the case of irregular shapes, any shape can be used, such as flat, polygonal (e.g., triangular to octagonal), T-shaped, hollow, or multi-lobed.

[0056] The water-permeability-imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment may be applied to the fiber bodies directly without dilution, or may be applied to the fiber bodies after diluting with water or the like to a concentration such that the weight ratio of nonvolatile matter is 0.5 to 5% by weight. The process for applying the water-permeability-imparting agent and the treatment agent for nonwoven fabric production to the fiber bodies may be any of the processes, such as the fiber body spinning process, drawing process, and crimping process. The means for applying the water-permeability-imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment to the fiber bodies are not particularly limited, and may include roller oiling, nozzle spray oiling, and dip oiling. A method that achieves the desired amount of adhesion more uniformly and efficiently may be adopted depending on the fiber production process and its characteristics. Furthermore, drying methods such as hot air drying and infrared drying, and drying by contact with a heat source may be used.

[0057] [Nonwoven fabric] The nonwoven fabric of the present invention may be a nonwoven fabric obtained by applying the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment to a raw nonwoven fabric that has not been applied with the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment, or a nonwoven fabric made from fibers to which the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment has been applied. The method for producing the nonwoven fabric of the present invention is not particularly limited, and known methods can be used. Short fibers or long fibers can be used as raw fibers. Examples of web formation methods using short fibers include dry methods such as carding and air-laid methods, and wet methods such as papermaking. Examples of web formation methods using long fibers include spunbonding, meltblowing, and flash spinning. Examples of interfiber bonding methods include chemical bonding, thermal bonding, needle punching, spunlace, and stitch bonding. The method for producing a 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 heat-treating the resulting fiber web. That is, the water-permeability imparting agent of the first aspect and the treating agent for nonwoven fabric production of the second aspect are particularly suitable for use when the production of a nonwoven fabric includes a step of heat-treating a fiber web. Methods for bonding a fiber web by heat treatment include heat fusion methods such as thermocompression bonding using a heated roll or ultrasonic waves, heat fusion bonding using heated air, and point bonding. As an example of bonding a fiber web by heat treatment, in the case of a sheath-core type composite fiber in which a high-melting-point resin is used for the core and a low-melting-point resin is used for the sheath, heat treatment near the melting point of the low-melting-point resin can easily achieve thermal bonding at the fiber intersections. Examples of methods for producing nonwoven fabrics include a method in which staple fibers to which the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment has been imparted are passed through a carding machine or the like to form a web, which is then heat-treated to bond and integrate as described above, and a method in which, when laminating pulp or the like in an airlaid method, the staple fibers to which the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment has been imparted are mixed, and the resulting mixture is heat-treated and bonded as described above.Other examples include a method in which a fiber molded product obtained by a spunbonding method, melt-blowing method, flash spinning method, or the like is subjected to adhesion of the water-permeability imparting agent of the first embodiment and the treatment agent for nonwoven fabric production of the second embodiment, and the resulting product is heat-treated with heated rolls or heated air, or the water-permeability imparting agent of the first embodiment or the treatment agent for nonwoven fabric production of the second embodiment is then applied to the heat-treated product to produce a nonwoven fabric.

[0058] In one example of the spunbonding method, a composite fiber resin is spun, and then the spun composite long fiber filaments are cooled with a cooling fluid and tensioned with drawing air to achieve the desired fineness. The spun filaments are then collected on a collection belt and bonded to obtain a spunbonded nonwoven fabric. Bonding methods include thermocompression bonding using a heated roll or ultrasonic waves, heat fusion bonding using heated air, and point bonding. The method for applying the water permeability imparting agent of the first embodiment or the treating agent for nonwoven fabric production of the second embodiment to the obtained spunbond nonwoven fabric can be a gravure method, a flexographic method, a roll coating method such as a gate roll method, a spray coating method, or the like, but is not particularly limited as long as the amount applied to the nonwoven fabric can be adjusted on each side. In addition, the drying method may be a method using hot air or infrared rays, a method of drying by contact with a heat source, or the like.

[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 (e.g., sanitary napkins). In the absorbent article of the present invention, the nonwoven fabric of the present invention is preferably used as a top sheet of sanitary materials such as disposable diapers and sanitary napkins. It can also be used for second seats, absorbents, absorbent pads, etc. [Example]

[0060] The present invention will be described in detail below with reference to examples and comparative examples, but the present invention is not limited to these examples. In the following examples, "percent (%)" and "parts" refer to "weight %" and "parts by weight" unless otherwise specified. In the examples and comparative examples, the properties of the water permeability agents were evaluated according to the following methods.

[0061] (Examples 1 to 56 and Comparative Examples 1 to 9) The acid values ​​of the 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 was calculated to achieve the ingredients and acid values ​​shown in Tables 1 to 3 and 10 to 11. The amount of water required to achieve a nonvolatile concentration of 50% by weight after neutralization was calculated and mixed with potassium hydroxide for neutralization to obtain an aqueous potassium hydroxide solution for neutralization. The unneutralized products (P-1-1 to P-11-1 and p-1 to p-3) were stirred, and the resulting aqueous potassium hydroxide solution was added dropwise to obtain partially neutralized products (partially neutralized products P-1-1 to P-11-1 and p-1 to p-3). The resulting partially neutralized products (partially neutralized products P-1-1 to P-11-1 and p-1 to p-3) were mixed with the respective components to achieve the blending components and acid values ​​shown in Tables 1 to 3 and 10 to 11, and water was further added as necessary to prepare the water permeability imparting agents of Examples 1 to 56 and Comparative Examples 1 to 9, each having a nonvolatile content of 50% by weight based on the total weight of the water permeability imparting agent. The respective components shown in Tables 1 to 3 and 10 to 11 were as shown in Tables 4 to 9 and described below. The obtained water permeability imparting agent was a mixture of alkali metal salts and unneutralized compounds of the compounds represented by general formula (1), (2), (3), (4), and inorganic phosphoric acid (salt). The obtained water-permeability imparting agents were each diluted with warm water at 60° C. so that the weight ratio of nonvolatile matter became 0.9% by weight to obtain diluted solutions. Next, 150 g of each diluted solution of the water-permeability agent was applied to 300 g of the fiber body by the dip oiling method, so that the amount of non-volatile matter of the water-permeability agent attached to the fiber was 0.45 wt%. The fiber body was a polypropylene (core)-polyethylene (sheath) composite fiber that had not been treated with a fiber treatment agent such as a water-permeability agent, and had a single fiber fineness of 2.2 Dtex and a fiber length of 38 mm. The fiber with the diluted solution of each water-permeability agent attached was placed in a hot air dryer at 80°C for 2 hours, and then left to dry at room temperature for at least 8 hours to obtain fibers with the water-permeability agent applied.

[0062] The fibers to which the water permeability agent was added were subjected to a fiber opening process and a carding process using a carding tester, and the weight was 25 g / m 2The web was then heat-treated at 140°C in a through-air hot air circulation dryer to fix the web, yielding a nonwoven fabric. The physical properties of the resulting nonwoven fabric were evaluated using the evaluation methods described below. The results are shown in Tables 1 to 3 and 10 to 11.

[0063] [Measurement of the P1 ratio [P1 / (P1+P2+P3)] by P NMR] 150 mg of the nonvolatile content of the water permeability agent was weighed into a 5 mm diameter NMR sample tube, and approximately 0.5 ml of deuterated water (DO) or deuterated chloroform (CDCl) was added as a deuterated solvent to dissolve the material. 31 Measurements were performed using P-NMR measurement devices (BRUKER AVANCE400, 162 MHz and JEOL JNM-ECZ400R, 162 MHz). Peak areas within the following chemical shift ranges were calculated, and the P ratio was calculated as a percentage based on the P NMR formula: P / (P+P+P). 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

[0064] [Dynamic surface tension measurement] Each water-permeability agent was diluted with 60°C warm water to a concentration of 1.0% by weight of nonvolatile matter, and the dynamic surface tension of the diluted solution was measured using a bubble pressure type dynamic surface tensiometer (BP-2, manufactured by KRUSS) at 25°C with a bubble generation interval (bubble plate) ranging from 10 to 10,000 msec, and the dynamic surface tension was read at a bubble generation interval (bubble plate) of 1,000 msec.

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

[0066] [Process passability (felt sedimentation)] Each of the water-permeability imparting agents was diluted with warm water at 60° C. so that the weight ratio of nonvolatile matter became 1.0% by weight to obtain a diluted solution. Next, a 2x2cm piece was cut into pieces and floated in 10ml of diluted solution of Olifelt S20 (No. 103) manufactured by Nikke Co., Ltd. The time (in seconds) until the piece settled was measured to evaluate uniform adhesion (temperature: 23°C). The shorter the time until the piece settled, the easier it was to control the amount of water-permeable agent and treatment agent adhered, indicating excellent processability. The number of seconds was evaluated according to the following criteria. 5 was the best rating, and 3 or above was suitable for practical use. (judgment criteria) 5 to 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 based on the Ross-Miles test method of JIS K3362. Specifically, each water permeability agent was diluted with 60°C hot water to a concentration of 1.0% by weight of nonvolatile matter, and 200 ml of the diluted solution was dripped onto 50 ml of the diluted solution from 900 mm above in 30 seconds in a 50°C environment. The foam volume was measured 5 minutes after the dripping was completed. The lower the foaming power, the better the foam-suppressing ability. The foam volume was evaluated according to the following criteria. 5 is the best rating, and 3 or higher 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 from fibers treated with a water-permeability agent was placed on top of filter paper (Toyo Roshi, 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 drop 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 drops that disappeared within 5 seconds was displayed. The number of drops was evaluated according to the following criteria: 5 is the best rating, and 3 or higher 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 fabric] According to the EDANA Repeated Liquid Strike-Through Time method, 0.9% saline was allowed to permeate a nonwoven fabric (10 cm x 10 cm) made from fibers treated with a water-permeability agent, and the permeation time was measured. After permeation, the nonwoven fabric was sandwiched between two sheets of filter paper (Toyo Roshi, No. 5), and a board (10 cm x 10 cm) and a weight (500 g) were placed on top. The fabric was left to dehydrate for 3 minutes, 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, the shorter the water permeation time, the better. The time (number of seconds) was evaluated according to the following criteria. 5 is the best rating, and 3 or higher is suitable for practical use. Furthermore, a rating of 3 or higher after the second water permeation is suitable for practical use, and a rating of 3 or higher after the third water permeation is 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...10 seconds or more

[0070] The methods for producing the unneutralized products 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 are as shown in Tables 4 to 9. (P-1-1 manufacturing method) 385 g of 2-ethylhexyl alcohol was added to a 1000 mL four-neck flask, and while stirring, tetraphosphorus 10 oxide was gradually added to a total of 550 g to allow the reaction to proceed, yielding an unneutralized product. The acid value of the resulting unneutralized product was measured.

[0071] (P-1-2 manufacturing method) 293 g of 2-ethylhexyl alcohol and 42 g of 75% phosphoric acid were added to a 1000 mL four-neck flask and stirred, and 144 g of tetraphosphorus octoxide was gradually added to allow the reaction to proceed. 69 g of water was then added and the reaction continued to yield an unneutralized product. The acid value of the resulting unneutralized product was measured.

[0072] (Manufacturing method of P-1-3) 398 g of 2-ethylhexyl alcohol was added to a 1000 mL four-neck flask, and while stirring, tetraphosphorus 10 oxide was gradually added to a total of 550 g to allow the reaction to proceed, yielding an unneutralized product. The acid value of the resulting unneutralized product was measured.

[0073] (Manufacturing method of P-1-4) 369 g of 2-ethylhexyl alcohol was added to a 1000 mL four-neck flask, and while stirring, tetraphosphorus 10 oxide was gradually added to the mixture to a total of 550 g to allow the reaction to proceed, yielding an unneutralized product. The acid value of the unneutralized product was measured. (P-1-5 manufacturing method) 385 g of 2-ethylhexyl alcohol was added to a 1000 mL four-neck flask, and while stirring, tetraphosphorus tetraoxide was gradually added to a total of 550 g to allow the reaction to proceed. 29 g of water was added and the reaction was continued, yielding an unneutralized product. The acid value of the resulting unneutralized product was measured.

[0074] (Production methods of 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 ratios shown in Tables 4 and 5, respectively, to produce the compositions.

[0075] (P-2-1 manufacturing method) 492 g of 2-ethylhexyl alcohol with 8 moles of polyoxyethylene added was used, and the same production method as in (P-1-1) was carried out. (P-2-2 manufacturing method) 499 g of 2-ethylhexyl alcohol with 8 moles of polyoxyethylene added was used, and the same production method as in (P-1-1) was carried out.

[0076] (P-3-1 manufacturing method) 421 g of isolauryl alcohol was used, and the same preparation as in (P-1-1) was carried out.

[0077] (Manufacturing method of P-4-1) 502 g of polyoxyethylene 9 mol-added isolauryl alcohol was used, and the same preparation as in (P-1-1) was carried out.

[0078] (Manufacturing method of P-5-1) 455 g of isostearyl alcohol was used, and the same preparation as in (P-1-1) was carried out.

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

[0080] The components listed in Tables 1 to 3 are as follows. E-1: Polyoxyethylene 20 moles hydrogenated castor oil ether E-2: PEG(400) oleate E-3: Sorbitan monolaurate E-4: Sorbitan monooleate E-5: Polyoxyalkylene alkyl (carbon number 12, 13) ether (random addition type of 6 moles of polyethylene and 2 moles of polyoxypropylene) E-6: Polyoxyethylene 25 moles hydrogenated castor oil ether E-7: Hexaglycerin monostearate F: Ditridecyl sulfosuccinic acid sodium salt G: Stearyl dimethyl ammonium 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 and 2 and Tables 10 and 11, the water-permeability-imparting agents of Examples 1 to 56 contain a compound (A) represented by the following general formula (1) and a compound (B) represented by the following general formula (2), and 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 phosphate (salt) (IN). The acid value of the non-volatile content of the water-permeability-imparting agent is 0.5 to 450 mg KOH / g, and the ratio of P1 to the sum (P1 + P2 + P3) of the following peak areas P1 to P3 in the spectrum measured by P nuclear NMR of the non-volatile content of the water-permeability-imparting agent [P1 / (P1 + P2 + P3)] is 40 to 100%, thereby solving the problem of the present application. Furthermore, the water permeability imparting agents of Examples 1 to 56 were evaluated in the same manner as in Examples 1 to 56, except that the amount of non-volatile matter attached to the water permeability imparting agent was set to 0.03% by weight. As a result, all of them had an instantaneous water permeability of 5, repeated water permeability (two times of water permeation) of 3 or more, felt settling of 3 or more, and foam suppression of 3 or more. The above evaluation was on a 5-point scale, with 5 being the best rating and 3 or more being suitable for practical use. Furthermore, it was confirmed that diapers and sanitary products using the nonwoven fabrics produced in Examples 1 to 56 as topsheets also exhibited excellent water permeability. Furthermore, when a web was produced from the polyolefin fibers obtained using the water-permeability imparting agents used in Examples 1 to 56, and when a nonwoven fabric was produced by the spunlace method, a foam-shedding test confirmed that the fibers had excellent foam-suppressing properties and were of stable quality. The foam-shedding test was conducted by placing raw cotton to which the treatment agent had been applied in water, squeezing the extracted liquid, and shaking it to measure the foam height. As described above, it was confirmed that the water-permeability imparting agents of Examples 1 to 56 were useful as treatment agents for producing 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) were not contained (Comparative Examples 1 to 3, 8, and 9), when the acid value of the non-volatile content of the water-permeability-imparting agent was not 0.5 to 450 mgKOH / g (Comparative Examples 4 and 5), when P1 / (P1+P2+P3) was not 40 to 100% (Comparative Example 6), and when compound (C), compound (D), and inorganic phosphoric acid (salt) (IN) were not contained (Comparative Example 7), the problem of foam suppression, which is the object of the present application, was not achieved. [Industrial Applicability]

[0094] The fibers and nonwoven fabrics treated with the water-permeability imparting agent of the first embodiment and the treating agent for nonwoven fabric production of the second embodiment are used for top sheets of absorbent articles such as sanitary products, such as disposable diapers and napkins, etc. They can also be used in situations requiring water-permeable sheets in food applications, medical applications, and industrial applications.

Claims

1. The compound (A) is represented by the following general formula (1) and the compound (B) is represented by the following general formula (2), A water-permeability-imparting 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 nonvolatile content of the water-permeability imparting agent is 0.5 to 450 mgKOH / g; the ratio of the total content of the compound (A) and the compound (B) to the total content of the compound (A), the compound (B), the compound (C), the compound (D), and the inorganic phosphoric acid (salt) (IN) is 38.4 to 96.2% by weight, A water-permeability-imparting agent, wherein the ratio of P1 to the total (P1+P2+P3) of peak areas P1 to P3 in a spectrum measured by P nuclear NMR of the nonvolatile content of the water-permeability-imparting agent 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 of 0 to 20. M １ and M ２ are each independently a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium. 【Chemistry 2】 (In the formula, R ２ and R ３ are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R ２ and R ３ At least one of the groups selected from the group consisting of AO and m is a branched group. 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, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. ｍ When there are two, 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 of 0 to 20. M １ and M ２ are each independently a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium. ２ Or - (AO) ｍ R ５ It is. ５ is a hydrocarbon group having 6 to 22 carbon atoms. Y is 1 or 2. M2 or (AO) ｍ When there are two or more Q's, they may be the same or different. ２ If R ４ has a branch, and Q is -(AO) ｍ R ５ If R ４ and R ５ At least one selected from has a branch. 【Chemistry 4】 (In the formula, R ６ , R ７ and R ８ are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R ６ , R ７ and R ８ At least one selected from the group consisting of (AO) and (AO) has a branch. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 20. ｍ When there are two or more, they may be the same or different.)

2. The water permeability imparting agent according to claim 1 , comprising the compound (D).

3. 3. The water permeability imparting agent according to claim 1, which has a dynamic surface tension of 25 to 60 mN / m at a life time of 1000 ms when dispersed in water with a nonvolatile content of 1%.

4. The compound (A) includes a compound represented by the general formula (1) in which m is 0, The compound (B) includes a compound represented by the general formula (2) in which m is 0, The compound (C) includes a compound represented by the general formula (3) in which m is 0, The water permeability imparting agent according to claim 1 or 2, wherein the compound (D) includes a compound in which m in the general formula (4) is 0.

5. The compound (A) is represented by R in the general formula (1). １ includes compounds having 8 to 16 carbon atoms, The compound (B) is represented by R ２ and R ３ each independently having 8 to 16 carbon atoms, The compound (C) is represented by R in the general formula (3). ４ and R ５ each independently having 8 to 16 carbon atoms, The compound (D) is represented by R in the general formula (4). ６ , R ７ and R ８ The water permeability imparting agent according to claim 1 or 2, wherein each of the groups independently has 8 to 16 carbon atoms.

6. The water permeability imparting agent according to claim 1 or 2, wherein a total ratio of the compound (A), the compound (B), the compound (C), the compound (D), and the inorganic phosphate (salt) (IN) to a non-volatile content of the water permeability imparting agent is 5 to 95% by weight.

7. The water permeability imparting agent according to claim 1 or 2, further comprising a nonionic surfactant (E).

8. The compound (A) is represented by the following general formula (1) and the compound (B) is represented by the following general formula (2), A treatment agent for producing a nonwoven fabric, 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 nonvolatile content of the treatment agent for producing nonwoven fabric is 0.5 to 450 mgKOH / g; the ratio of the total content of the compound (A) and the compound (B) to the total content of the compound (A), the compound (B), the compound (C), the compound (D), and the inorganic phosphoric acid (salt) (IN) is 38.4 to 96.2% by weight, The non-volatile content of the treatment agent for producing nonwoven fabrics is measured by P nuclear NMR, and the ratio of P1 to the total peak area of ​​P1 to P3 (P1+P2+P3), [P1 / (P1+P2+P3)], 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 of 0 to 20. M １ and M ２ are each independently a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium. 【Chemistry 2】 (In the formula, R ２ and R ３ are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R ２ and R ３ At least one of the groups selected from the group consisting of AO and m is a branched group. 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, an ammonium, a phosphonium, an organic amine, or a quaternary ammonium. ｍ When there are two, 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 of 0 to 20. M １ and M ２ are each independently a hydrogen atom, an alkali metal, ammonium, phosphonium, an organic amine, or a quaternary ammonium. ２ Or - (AO) ｍ R ５ It is. ５ is a hydrocarbon group having 6 to 22 carbon atoms. Y is 1 or 2. ２ Or (AO) ｍ When there are two or more Q's, they may be the same or different. ２ When R4 is branched and Q is -(AO) ｍ R ５ If R ４ and R ５ At least one selected from has a branch. 【Chemistry 4】 (In the formula, R ６ , R ７ and R ８ are each independently a hydrocarbon group having 6 to 22 carbon atoms, and R ６ , R ７ and R ８ At least one selected from the group consisting of (AO) and (AO) has a branch. AO is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 20. ｍ When there are two or more, they may be the same or different.)

9. The treatment agent for producing a nonwoven fabric according to claim 8 , comprising the compound (D).

10. The compound (A) includes a compound represented by the general formula (1) in which m is 0, The compound (B) includes a compound represented by the general formula (2) in which m is 0, The compound (C) includes a compound represented by the general formula (3) in which m is 0, The compound (D) includes a compound in which m in the general formula (4) is 0.

10. The treatment agent for producing nonwoven fabric according to 9.

11. A fiber to which at least one selected from the water permeability imparting agent according to claim 1, the water permeability imparting agent according to claim 2, the treatment agent for nonwoven fabric production according to claim 8, and the treatment agent for nonwoven fabric production according to claim 9 has been imparted.

12. A nonwoven fabric to which at least one selected from the water permeability imparting agent according to claim 1, the water permeability imparting agent according to claim 2, the treatment agent for nonwoven fabric production according to claim 8, and the treatment agent for nonwoven fabric production according to claim 9 has been imparted.

13. A water-absorbent article comprising the nonwoven fabric of claim 12.

14. A method for producing fibers, comprising a step of applying to raw fibers at least one selected from the group consisting of the water permeability imparting agent according to claim 1, the water permeability imparting agent according to claim 2, the treatment agent for nonwoven fabric production according to claim 8, and the treatment agent for nonwoven fabric production according to claim 9.

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