Processing agent for nonwoven fabric and nonwoven fabric containing the same

Abstract

Provided are: a nonwoven-fabric processing agent which can give nonwoven fabric having excellent durability against repeated water permeation, can be satisfactorily diluted with solvents, and changes little in percent adhesion in continuous coating; and nonwoven fabric containing the nonwoven-fabric processing agent. This nonwoven-fabric processing agent is characterized by including a compound A represented by general formula 1 (wherein R1 and R3 are each independently a hydrogen atom, a C1-C24 alkyl group, a C2-C24 alkenyl group, a C2-C24 alkanoyl group, a C2-C24 alkenoyl group, etc., R2 is a C1-C12 alkylene group, a C2-C12 alkenylene group, or a C6-C12 arylene group, A1 and A2 are each independently a C2-C4 alkylene group, and l, m, and n are given integers, with the proviso that A1 or A2 includes a C3 or C4 alkylene group and that when n=0, either R1 or R3 is not a hydrogen atom) and an anionic surfactant B.

Description

[Technical Field]

[0001] The present invention relates to a processing agent for nonwoven fabrics and a nonwoven fabric containing the same. [Background technology]

[0002] In recent years, disposable diapers and sanitary napkins have become increasingly popular, and the quality and performance required for them has been improving. For example, disposable diapers do not necessarily dispose of one excrement per wear; rather, they must be able to tolerate multiple excrements without discomfort. Therefore, in addition to liquid permeability (initial permeability) that allows excrement, sweat, and bodily fluids to be quickly transferred to the absorbent core, durable water permeability (repeated water permeability) is also strongly required.

[0003] In order to meet these demands, for example, Patent Document 1 below proposes a nonwoven fabric to which a specific processing agent is applied. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-190067 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the processing agent described in Patent Document 1 still has problems in that it does not provide sufficient repeated water permeability, and the processing agent settles over time in a treatment bath containing an aqueous solvent as a diluting solvent, resulting in a difference in the adhesion rate of the processing agent between the start and end of coating. In view of the problems of the prior art, the problem to be solved by the present invention is to provide a processing agent for nonwoven fabrics that can repeatedly give nonwoven fabrics with excellent water permeability and that exhibits little change in adhesion rate during continuous coating, and a nonwoven fabric containing the same. [Means for solving the problem]

[0006] In order to solve these problems, the present inventors have conducted extensive research and experiments, and as a result have found that the above problems can be solved by using a specific compound represented by general formula (1) in combination with an anionic surfactant, thereby completing the present invention.

[0007] That is, the present invention is as follows. [1] General formula 1: [ka] {where, R 1 and R 3 are each independently a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, an alkenoyl group having 2 to 24 carbon atoms, or —C(O)—R 4 -COOX (where R 4 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and X is a hydrogen atom or an anion; 2 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, l is 0 or an integer of 1 to 1000, m is an integer of 1 to 1000, and n is 0 or an integer of 1 to 100, provided that l+n is 1 or more, and A 1 or A 2 contains an alkylene group having 3 or 4 carbon atoms and n=0, R 1 and R 3 wherein at least one of the groups is not a hydrogen atom.} and an anionic surfactant B. [2] The nonwoven fabric processing agent according to [1], which contains the anionic surfactant B in an amount of 0.5% by mass to 30% by mass based on the total mass of the compound A and the anionic surfactant B. [3] General formula 2: R 5 -COOH…General formula 2 {where, R 5 is an alkyl group having 7 to 21 carbon atoms or an alkenyl group having 7 to 21 carbon atoms.}, and the content of compound C is 0.02 mass % to 5 mass % based on the total mass of compound A and compound C. [4] The compound A is represented by the following general formula 3: [ka] {where, R 1 is an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, an alkenoyl group having 2 to 24 carbon atoms, or —C(O)—R 4 -COOX (wherein R4 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and X is a hydrogen atom or an anion), and R 2 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, l is 0 or an integer of 1 to 1000, m is an integer of 1 to 1000, and n is 0 or an integer of 1 to 100, provided that l+n is 1 or more, and A 1 or A 2 contains an alkylene group having 3 or 4 carbon atoms.} in an amount of 20 mass % to 95 mass % relative to the total mass of compound A. [5] General formula 4: HO-(A 3 O)pH…General formula 4 {In formula, A 3 is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3.} in an amount of 1 mass % or less relative to compound A. [6] The nonwoven fabric processing agent according to any one of [1] to [5], further comprising a polyether-modified silicone as compound E. [7] The nonwoven fabric processing agent according to any one of [1] to [6], wherein the total dry residue of the compound A, the anionic surfactant B, the compound C, the compound D, and the compound E after heat treatment at 105°C for 3 hours is 97 mass% or more based on the total weight before the heat treatment. [8] The nonwoven fabric processing agent according to any one of [1] to [7], wherein the anionic surfactant B is at least one selected from the group consisting of sulfonates, sulfates, carboxylates, and phosphates. [9] The anionic surfactant B is at least one selected from the group consisting of sulfonates, sulfates, carboxylates, and phosphates, and is represented by the following general formula 2: R 5 -COOH…General formula 2 {where, R 5 is an alkyl group having 7 to 21 carbon atoms or an alkenyl group having 7 to 21 carbon atoms.}, and the content of compound C is 0.02 mass % to 5 mass % based on the total mass of compound A and compound C.

[10] A nonwoven fabric containing the nonwoven fabric processing agent according to any one of [1] to [9] above. [Effects of the Invention]

[0008] The nonwoven fabric processing agent according to the present invention can provide a nonwoven fabric with excellent water permeability over repeated coating processes, and the change in adhesion rate during continuous coating is small. Furthermore, the nonwoven fabric according to the present invention has excellent water permeability over repeated coating processes, and the processing agent is uniformly adhered to the nonwoven fabric along its length. It is believed that the nonwoven fabric processing agent according to the present invention is able to exhibit such effects because it has a good balance of the ability to disperse uniformly in an aqueous solvent (dilution spreadability or water solubility) and affinity for nonwoven fabrics. Here, aqueous solvent refers to water or a mixed solvent of water and an organic solvent that dissolves in water. DETAILED DESCRIPTION OF THE INVENTION

[0009] One embodiment of the present invention is a compound represented by the following general formula 1: [ka] {where, R 1 and R 3 are each independently a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, an alkenoyl group having 2 to 24 carbon atoms, or —C(O)—R 4 -COOX (where R 4 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and X is a hydrogen atom or an anion; 2 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, l is 0 or an integer of 1 to 1000, m is an integer of 1 to 1000, and n is 0 or an integer of 1 to 100, provided that l+n is 1 or more, and A 1 or A 2 contains an alkylene group having 3 or 4 carbon atoms and n=0, R 1 and R 3 wherein at least one of the groups is not a hydrogen atom.} and an anionic surfactant B.

[0010] The processing agent of the present embodiment contains the compound A (hereinafter also referred to as component A).

[0011] From the viewpoint of cyclic permeability, R 1 and R 3Preferably, any one of these groups is an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, or an alkenoyl group having 2 to 24 carbon atoms. The number of carbon atoms in the alkyl group, alkenyl group, alkanoyl group, or alkenoyl group is more preferably 8 to 22, and even more preferably 12 to 18. These alkyl groups, alkenyl groups, alkanoyl groups, and alkenoyl groups may be linear or branched.

[0012] A 1 and A 2 is preferably an alkylene group having 2 to 3 carbon atoms from the viewpoint of repeated water permeability and dilution spreadability. (A 1 O)l, (A 2 The polyalkyleneoxy group represented by (A)m preferably contains both an alkyleneoxy group having 2 carbon atoms (ethyleneoxy group) and an alkyleneoxy group having 3 carbon atoms (propyleneoxy group). In this case, the molar ratio of the ethyleneoxy group to the propyleneoxy group is preferably ethyleneoxy group:propyleneoxy group=5:95 to 50:50, more preferably 5:95 to 40:60, and even more preferably 10:90 to 30:70. 1 O)l, (A 2 When the polyalkyleneoxy group represented by (A)m is composed of a plurality of alkyleneoxy groups, it may be a block adduct or a random adduct. 1 O)l and (A 2 O) represents the degree of polymerization of the polyalkyleneoxy group represented by m, where l represents 0 or an integer of 1 to 1000, and m represents an integer of 1 to 1000. From the viewpoints of rewetting properties (low return of excrement and the like that has permeated water to the surface of the nonwoven fabric) and repeated water permeability, it is preferable that l and m are both 10 to 200.

[0013] The viscosity of component A at 25° C. is preferably 100 to 3000 mPa·s, more preferably 200 to 2000 mPa·s, and even more preferably 300 to 1000 mPa·s. If the viscosity is 100 mPa·s or higher, the processing agent is less likely to fall off from the fibers due to friction or the like after application to the nonwoven fabric, while if the viscosity is 3000 mPa·s or lower, the processing agent is easy to handle when applied to the nonwoven fabric and is more likely to be applied uniformly.

[0014] From the viewpoint of repeated water permeability, component A is a polymer represented by the following general formula 3: [ka] {where, R 1 is an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, an alkenoyl group having 2 to 24 carbon atoms, or —C(O)—R 4 -COOX (wherein R4 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and X is a hydrogen atom or an anion), and R 2 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, l is 0 or an integer of 1 to 1000, m is an integer of 1 to 1000, and n is 0 or an integer of 1 to 100, provided that l+n is 1 or more, and A 1 or A 2 and contains an alkylene group having 3 or 4 carbon atoms.} is contained in an amount of preferably 20% by mass to 95% by mass, more preferably 25% by mass to 50% by mass, based on the total mass of compound A.

[0015] From the viewpoint of cyclic permeability, R 1is preferably an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, or an alkenoyl group having 2 to 24 carbon atoms. The number of carbon atoms in the alkyl group, alkenyl group, alkanoyl group, or alkenoyl group is more preferably 8 to 22, and even more preferably 12 to 18. These alkyl group, alkenyl group, alkanoyl group, and alkenoyl group may be linear or branched.

[0016] A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, but from the viewpoint of repeated water permeability and processing bath stability, an alkylene group having 2 to 3 carbon atoms is preferred. (A 1 O)l, (A 2 The polyalkyleneoxy group represented by (A)m preferably contains both an alkyleneoxy group having 2 carbon atoms (ethyleneoxy group) and an alkyleneoxy group having 3 carbon atoms (propyleneoxy group). In this case, the molar ratio of the ethyleneoxy group to the propyleneoxy group is preferably ethyleneoxy group:propyleneoxy group=5:95 to 50:50, more preferably 5:95 to 40:60, and even more preferably 10:90 to 30:70. 1 O)l, (A 2 When the polyalkyleneoxy group represented by (A)m is composed of a plurality of alkyleneoxy groups, it may be a block adduct or a random adduct. 1 O)l and (A 2 O) represents the degree of polymerization of the polyalkyleneoxy group represented by m, where l represents 0 or an integer of 1 to 1000, and m represents an integer of 1 to 1000, but from the viewpoint of repeated water permeability, it is preferable that l and m are both 10 to 200.

[0017] Examples of component A include esters of polyalkylene glycols (A1), polyoxyalkylene alkyl ethers (A2), esters thereof (A3), alkyleneoxy group adducts of dicarboxylic acids (A4), and esters thereof (A5).

[0018] The polyoxyalkylene alkyl ether (A2) can be synthesized, for example, by adding an alkylene oxide to a monohydric or dihydric alcohol. In this case, the reaction can be carried out according to a conventional method, for example, using a base catalyst such as potassium hydroxide or sodium hydroxide at 80 to 200°C. Examples of the monohydric alcohol include alcohols having 1 to 24 carbon atoms. Examples of the dihydric alcohol include ethylene glycol, propylene glycol, butylene glycol, etc. These alcohols may have a branch or a double bond. Examples of the alkylene oxide that can be used include alkylene oxides having 2 to 4 carbon atoms, such as ethylene oxide, propylene oxide, and butylene oxide. When two or more alkylene oxides are used, the addition method may be block or random.

[0019] The alkyleneoxy adduct of a dicarboxylic acid (A4) can be obtained, for example, by adding an alkylene oxide to a dicarboxylic acid, or by reacting a dicarboxylic acid with a polyalkylene glycol. The polyalkylene glycol can be obtained, for example, by adding an alkylene oxide to a dihydric alcohol.

[0020] The esters of the compounds (A1, A3, A5) can be obtained, for example, by reacting the polyalkylene glycol, polyoxyalkylene alkyl ether (A2), and / or alkyleneoxy group adduct of dicarboxylic acid (A4) with a monocarboxylic and / or dicarboxylic acid according to a conventional method at about 100 to 300° C. This reaction may be carried out without a catalyst, or may be carried out in the presence of a catalyst such as sulfuric acid or paratoluenesulfonic acid. Examples of monocarboxylic acids include carboxylic acids having 1 to 24 carbon atoms. Such carboxylic acids may have a branch or a double bond. Examples of dicarboxylic acids include aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, and phthalic acid, and aliphatic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid, adipic acid, sebacic acid, maleic acid, and succinic acid. Among these, aliphatic dicarboxylic acids are preferably used, and adipic acid and succinic acid are more preferably used, from the viewpoints of rewetting properties and repeated water permeability.

[0021] The processing agent of the present embodiment contains an anionic surfactant B (hereinafter also referred to as component B). Component B is preferably contained in an amount of 0.5% by mass to 30% by mass, and more preferably 2% by mass to 20% by mass, based on the total amount of components A and B. The anionic surfactant is not particularly limited and known surfactants can be used, but from the viewpoint of dilution and development in a solvent, it is preferably at least one selected from the group consisting of sulfonates, sulfate ester salts, carboxylate salts, and phosphate ester salts. The counter ion forming the salt may be K, Na, Li, or primary to quaternary ammonium ions.

[0022] Examples of anionic surfactants that are sulfonates include alkylbenzenesulfonates, alkylnaphthalenesulfonates, cresolsulfonates, naphthalenesulfonates, formalin condensates such as cresolsulfonates and naphthalenesulfonates, α-olefinsulfonates, paraffin sulfonates, sulfosuccinate salts, salts of alkanoylmethyltaurines, and sulfonate-type anionic surfactants such as salts of alkenoylmethyltaurines, and among these, sulfosuccinate salts are preferred.

[0023] The sulfosuccinate salt is represented by the following general formula (5): [ka] {where, R 6 and R 7may be the same or different and each independently represents a hydrogen atom, a linear or branched alkyl group having 2 to 22 carbon atoms, an alkenyl group, an aryl group, a polyoxyalkylene alkyl group, a polyoxyalkylene alkenyl group, or a polyoxyalkylene aryl group, and Y represents a monovalent cation, which may be K, Na, or a primary to quaternary ammonium ion. 6 and R 7 wherein either one of the groups is not hydrogen.}, or the following general formula (6): [ka] {where, R 6 and R 7 may be the same or different and each independently represents a hydrogen atom, a linear or branched alkyl group having 2 to 22 carbon atoms, an alkenyl group, an aryl group, a polyoxyalkylene alkyl group, a polyoxyalkylene alkenyl group, or a polyoxyalkylene aryl group, and Y represents a monovalent cation, which may be K, Na, or a primary to quaternary ammonium ion. 6 and R 7 wherein any one of is not hydrogen.

[0024] R 6 and R 7 is not hydrogen, its carbon number is preferably 2 to 22, more preferably 6 to 10. When the carbon number is 2 or more, the water solubility of the nonwoven fabric processing agent is not too high, so that the nonwoven fabric to which it is applied tends to be prevented from falling off during repeated water permeation, and it is thought that the repeated water permeability tends to be improved. On the other hand, when the carbon number is 22 or less, the water solubility of the nonwoven fabric processing agent is not too low, so that when diluted in a solvent such as water for coating on a nonwoven fabric, the processing agent tends to be less likely to settle over time, and it is thought that when coating a long nonwoven fabric, the deposition rate of the processing agent tends to be less likely to change between the start of coating and just before the end of coating.

[0025] R 6 and R 7When contains a polyoxyalkylene group, the polyoxyalkylene group is preferably an ethylene oxide group.

[0026] R 6 and R 7 From the viewpoint of better water permeability, it is particularly preferable that at least one of them is a 2-ethylhexyl group.

[0027] Examples of anionic surfactants that are sulfates include higher alcohol (e.g., alcohols having 8 to 22 carbon atoms) sulfates, higher alcohol polyalkylene glycol ether sulfates, styrenated alkylphenol alkylene oxide adduct sulfates, styrenated phenol alkylene oxide adduct sulfates, benzylated phenol alkylene oxide adduct sulfates, sulfated oils, sulfated fatty acid esters, sulfated fatty acids, sulfated fatty acid esters, and sulfated olefins, and among these, higher alcohol polyalkylene glycol sulfates are preferred.

[0028] Examples of anionic surfactants that are carboxylates include carboxylate-type anionic surfactants such as fatty acid soaps, and polycarboxylate-type anionic surfactants, and among these, polycarboxylate-type anionic surfactants are preferred.

[0029] The polycarboxylate-type anionic surfactant can be synthesized by a conventionally known radical polymerization method using, for example, acrylic acid, methacrylic acid, maleic acid, or the like as a monomer, or commercially available products may be used. There are no particular limitations on the method for producing the polycarboxylate-type anionic surfactant, but examples include a method in which a radical polymerization initiator is added to an aqueous solution of the monomer and / or its salt and the mixture is heated at 30 to 150°C for 2 to 5 hours. At this time, an alcohol such as methanol, ethanol, or isopropyl alcohol, or an aqueous solvent such as acetone may be added to the aqueous solution of the monomer and / or its salt. There are also no particular limitations on the radical polymerization initiator used, but examples include persulfates such as potassium persulfate, sodium persulfate, and ammonium persulfate; redox-based polymerization initiators such as combinations of persulfates and sodium bisulfite; hydrogen peroxide; and water-soluble azo-based polymerization initiators. These radical polymerization initiators may be used alone or in combination. Furthermore, during radical polymerization, a chain transfer agent (e.g., octyl thioglycolate) may be added to adjust the degree of polymerization.

[0030] In addition to the above-mentioned monomers, copolymerizable monomers may also be used in radical polymerization. The copolymerizable monomers are not particularly limited, and examples thereof include vinyl monomers such as ethylene, vinyl chloride, and vinyl acetate, acrylamide, acrylates, and methacrylates. The acrylates or methacrylates are also not particularly limited, but those having a hydrocarbon group with 1 to 3 carbon atoms are preferred, and this hydrocarbon group may have a substituent such as a hydroxyl group. Examples of such acrylates or methacrylates include methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, propyl acrylate, and propyl methacrylate. These copolymerizable monomers may be used alone or in combination of two or more. At least a portion of the carboxyl groups in the polycarboxylic acid polymer are neutralized with an alkali metal, an amine compound, etc. Here, examples of the alkali metal include sodium, potassium, and lithium, and examples of the amine compound include ammonia, monoethanolamine, diethanolamine, and triethanolamine.

[0031] Examples of anionic surfactants that are phosphate ester salts include higher alcohol phosphate ester salts, styrenated alkylphenol alkylene oxide adduct phosphate ester salts, styrenated phenol alkylene oxide adduct phosphate ester salts, and benzylated phenol alkylene oxide adduct phosphate ester salts, and among these, higher alcohol phosphate ester salts are preferred.

[0032] The processing agent of the present embodiment is a compound represented by the following general formula 2: R 5 -COOH…General formula 2 {where, R 5 is an alkyl group having 7 to 21 carbon atoms or an alkenyl group having 7 to 21 carbon atoms. R 5 From the viewpoint of repeated water permeability, the number of carbon atoms is preferably 9 to 19, more preferably 11 to 17. Specific examples of component C include caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, pentadecylic acid, palmitic acid, palmitoleic acid, margaric acid, stearic acid, oleic acid, vaccenic acid, linoleic acid, eicosanoic acid, and behenic acid.

[0033] The content of Component C is preferably 0.02 to 5 mass%, more preferably 0.02 to 3 mass%, and most preferably 0.5 to 2 mass%, based on the total mass of Components A and C. If it is 0.02 mass% or more, the affinity of the processing agent for the nonwoven fabric is increased, resulting in sufficient repeated water permeability, while if it is 5 mass% or less, the processing agent has sufficient hydrophilicity, resulting in uniform dispersion of the processing agent when diluted with a solvent during processing, which makes it less likely for uneven deposition of the processing agent to occur and tends to increase repeated water permeability. Methods for incorporating component C into the processing agent of this embodiment include adding component C after synthesizing component A, adding excess component C when synthesizing component A, and adjusting the reaction time when synthesizing component A so that component C remains unreacted.

[0034] The processing agent of the present embodiment is a compound represented by the following general formula 4: HO-(A 3 O)pH…General formula 4 {In formula, A 3 is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3. From the viewpoint of repeated water permeability, the content of component D is preferably 1.0 mass % or less, preferably as low as possible, and most preferably 0 mass % relative to compound A.

[0035] In the processing agent of this embodiment, the total weight of the dry residue of Components A, B, C, D, and E after heat treatment at 105°C for 3 hours is preferably 97% by mass or more, more preferably 98% by mass, and even more preferably 99% by mass, relative to the total weight before heat treatment. The dry residue is calculated by heating an open petri dish containing Components A, B, C, D, and E in a hot air dryer or the like at 105°C for 3 hours, and dividing the mass difference before and after by the mass before drying, expressed as a percentage. If the dry residue is 97% by mass or more, sufficient repeated water permeability can be obtained.

[0036] The dry residue may be determined by, for example, measuring the dry residue of each of Component A, Component B, Component C, Component D, and Component E and then adding them together, or by previously mixing Components A to E to form a single agent and measuring the dry residue thereon. Furthermore, when a nonwoven fabric to which the processing agent of this embodiment has been applied is subjected to post-processing, for example to impart an uneven shape, the components of the processing agent are less likely to evaporate due to the heat during post-processing, and therefore the water permeability of the nonwoven fabric is less likely to decrease before and after post-processing.

[0037] The processing agent of this embodiment may further contain polyether-modified silicone (compound E) as component E that improves initial water permeability. From the viewpoints of rewetting and initial water permeability, the content of component E is preferably 5% by mass to 50% by mass, and more preferably 10% by mass to 30% by mass, relative to component A.

[0038] The polyether-modified silicone preferably has a polyoxyalkylene skeleton in the main chain and / or side chain. The HLB of the polyether-modified silicone is preferably 5 to 15, more preferably 8 to 12. When the HLB is 5 or more, the water solubility of the nonwoven fabric processing agent containing such polyether-modified silicone is sufficiently high, and it adheres uniformly to the nonwoven fabric, tending to improve water permeability. When the HLB is 15 or less, the water solubility is not too high, and repeated water permeability tends to improve. Here, the HLB (hydrophilic-lipophilic balance) is based on the HLB according to Griffin's formula, which is expressed as follows: HLB=(hydrophilic group×20) / molecular weight Here, the hydrophilic group refers to an ethylene oxide group.

[0039] The polyether-modified silicone may be used alone or in combination of two or more. The polyoxyalkylene backbone of the polyether-modified silicone is not particularly limited, and examples thereof include polyoxyethylene, polyoxypropylene, polyoxytrimethylene, polyoxybutylene, and polyoxytetramethylene backbones. Examples of these backbones include a single polyoxyalkylene backbone, a mixed backbone (random) of two or more polyoxyalkylenes, or a sequential backbone (block). These backbones may be incorporated into both ends of the silicone, the side chain, or the main chain of the silicone. Among these, polyoxyethylene backbones, and mixed and sequential backbones of polyoxyethylene and polyoxypropylene backbones are particularly suitable because they repeatedly improve water permeability. Examples of such polyether-modified silicones include side-chain polyoxyalkylene-type methylhydrogensilicones and methylhydrogensilicone-polyoxyalkylene polymerized types, which are obtained by reacting a double-bonded alcohol or a compound obtained by adding alkylene oxide to a double-bonded alcohol with a silicone having an active hydrogen group, such as methylhydrogensilicone. The alcohol having a double bond may be a monohydric or polyhydric alcohol having 2 to 6 carbon atoms. In terms of repeated water permeability, a polyhydric alcohol having 2 to 6 carbon atoms is preferred. Examples of alkylene oxides used in the addition of alkylene oxides to alcohols having a double bond include ethylene oxide, propylene oxide, trimethylene oxide, tetrahydrofuran, 1,2-butylene oxide, 2,3-butylene oxide, and isobutylene oxide.

[0040] As the polyether-modified silicone, commercially available polyether-modified silicones can be used, such as KF-305M, KF-351A, KF-352A, KF-353, KF-355A, KF-615A, KF-640, KF-642, KF-6204, KF-6011, KF-6012, and KF-6013 manufactured by Shin-Etsu Chemical Co., Ltd.; and SH8700, SH8410, SH8400, L-7002, and FZ-2104 manufactured by Dow Corning Toray Co., Ltd. , FZ-77, L-7604; TSF4440, TSF4441, TSF4452, SF1188A, SF1288, Silsoft840, Silsoft860, Silsoft870, Silsoft875, Silsoft880, Silsoft895, etc., manufactured by Momentive Performance Materials Japan, LLC, can be used.

[0041] The processing agent of the present embodiment may contain other components depending on the purpose, as long as the desired effect is not impaired. For example, various surfactants such as emulsifiers, softeners, smoothing agents, antistatic agents, and defoaming agents may be appropriately contained.

[0042] Another embodiment of the present invention provides a nonwoven fabric containing the above-described processing agent. The deposition rate (pure content deposition rate) of the pure content of the processing agent in the nonwoven fabric (pure content excluding solvents such as water that dilute the processing agent) varies depending on the intended use, but is preferably in the range of 0.10% by mass to 1.50% by mass, and more preferably 0.15% by mass to 1.00% by mass. If it is 0.10% by mass or more, sufficient water permeability is obtained, and if it is 1.00% by mass or less, the possibility of skin rash or eczema occurring in uses involving contact with the skin tends to be reduced.

[0043] The processing agent is preferably applied to the nonwoven fabric by pre-mixing the components (components A to E and other components) into a single agent and then applying it to the nonwoven fabric, and more preferably diluting it with a solvent such as water. The concentration of the processing agent to be applied is preferably 0.05% by mass or more to 100% by mass. The components are preferably mixed uniformly at a temperature equal to or higher than the melting point of each component. The method for applying the processing agent to the nonwoven fabric is not particularly limited and may be a known method such as dipping, spraying, or coating. After applying the processing agent, the nonwoven fabric may be dried using the drying means described below. Furthermore, before applying the processing agent, the nonwoven fabric may be subjected to a corona discharge treatment, atmospheric pressure plasma discharge treatment, or other treatment, as needed.

[0044] To avoid insufficient drying during the drying process due to increased speed in nonwoven fabric manufacturing equipment, it is preferable to apply a small amount of the processing agent solution. The amount of the processing agent solution applied to the nonwoven fabric (mass %) is preferably 1.0 mass % to 65 mass %, more preferably 3.0 mass % to 60 mass %, and even more preferably 5.0 mass % to 50 mass %. If it is 1.0 mass % or more, uniform application can be achieved, while if it is 65 mass % or less, drying can be performed at low cost and insufficient drying is less likely to occur.

[0045] The processing agent is generally applied by coating, and known coating methods include kiss coater, die coater, gravure coater, and spraying. The kiss coater preferably uses a stainless steel applicator roll, and the rotation speed and wrap angle of the kiss coater are adjusted to apply the nonwoven fabric processing agent.

[0046] In the case of a gravure coater, the gravure roll pattern can be a grid or pyramid type, but a diagonal type is preferable as it is less likely for the processing agent to remain at the bottom of the gravure cell. The cell volume is 5 cm 3 / m 2 ~40cm 3 / m 2 is preferred. 3 / m 2 If the thickness is more than 40cm, the amount of coating is large enough to make it easy to apply the coating agent uniformly. 3 / m 2 If the amount is less than this, the amount of coating is sufficiently small, so problems such as insufficient drying in the drying step and uneven adhesion of the processing agent due to migration are unlikely to occur.

[0047] The method for scraping the liquid from the gravure roll surface may be a doctor blade method using a doctor blade made of a typical hardened steel plate, or a rubber roll method using a roll with a rubber surface. In the case of the doctor blade method, the pressing pressure is preferably 0.5 kg / cm to 1.0 kg / cm, and more preferably 0.6 kg / cm to 0.8 kg / cm. In the case of the rubber roll method, the pressing pressure is preferably 1.0 kg / cm to 5.0 kg / cm, and more preferably 1.5 kg / cm to 3.5 kg / cm, within the rubber hardness range of 60° to 80°. In either method, if the pressing pressure is within the above range, the nonwoven fabric can be pressed uniformly in the width direction, thereby reducing variation in the amount of processing agent applied.

[0048] In addition, spraying is also preferred because it can accommodate faster equipment speeds, can be applied efficiently, and makes it easier to maintain the thickness of the nonwoven fabric. The spraying method may be a known air-compressed spraying method or a method in which a processing agent solution is directly compressed and sprayed, but a rotor dampening method is preferred from the viewpoint of achieving uniform application to the nonwoven fabric. The rotor dampening method is a method in which the processing agent solution is supplied onto a rotating rotor and the centrifugal force of the rotor rotation is used to spray the processing agent solution, and the spray particle size can be adjusted by the rotor rotation speed.

[0049] A conventional drying method can be used for drying the applied processing agent solution, and is not particularly limited. Known methods utilizing convective heat transfer, conductive heat transfer, radiative heat transfer, etc. can be employed. Various drying methods can be used, such as hot air circulation type, hot air penetration type, infrared heater type, method of blowing hot air on both sides of the nonwoven fabric, method of introducing the nonwoven fabric into heated gas, etc.

[0050] The nonwoven fabric is preferably made of thermoplastic fibers, and may be a long-fiber nonwoven fabric produced by the spunbond method or a short-fiber nonwoven fabric produced by a carding method or wet papermaking method. However, from the viewpoints of strength, productivity, providing a distinctive surface structure for the nonwoven fabric, and reducing skin irritation, long-fiber nonwoven fabrics produced by the spunbond method are preferred. In this specification, long fibers refer to fibers having a length of 55 mm or more. Furthermore, the form of the thermoplastic fibers is not particularly limited, and may include not only those with a round cross section but also fibers with irregular cross sections such as flat or Y-shaped cross sections, hollow fibers, crimped fibers, and other special forms.

[0051] The web constituting the nonwoven fabric may be a single layer, or may be a laminate formed by spraying a melt-spun web (M) by a melt-blown method onto a web (S) formed by a spunbond method. From the viewpoint of productivity, the lamination state may be SS, SSS, SSSS, or SM, SMS, SMMS, or SMSMS. Furthermore, each layer may be formed with a different basis weight, fiber diameter, or fiber form.

[0052] Examples of methods for joining the laminated webs include bonding using adhesives, bonding with low-melting-point fibers or composite fibers, melt-bonding by spraying a hot-melt binder during web formation, mechanical entanglement using needle punching or a water jet, hot air bonding, and partial thermocompression bonding. Partial thermocompression bonding is preferred from the perspective of high-speed productivity. Examples of partial thermocompression bonding include passing the web between heated embossing / flat rolls that can impart pinpoint, elliptical, diamond, rectangular, or other shapes to the joining points. The thermocompression bonding area ratio in partial thermocompression bonding is preferably 5 to 40%, more preferably 5 to 25%, from the perspectives of strength retention and flexibility. Furthermore, hot air bonding is also preferred to maintain the bulk of the nonwoven fabric and achieve a cushiony texture preferred as a top sheet for hygienic materials. Hot air bonding methods include hot air circulation, hot air penetration, and methods in which hot air is blown onto both sides of the nonwoven fabric.

[0053] Thermoplastic fibers constituting nonwoven fabrics can include, for example, polyolefin resins such as polyethylene, polypropylene, and copolymer polypropylene; polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and copolymer polyester; polyamide resins such as nylon-6, nylon-66, and copolymer nylon; and biodegradable resins such as polylactic acid, polybutylene succinate, and polyethylene succinate. Polyolefin resins are preferred from the viewpoint of texture of the nonwoven fabric and, in the case of disposable material applications, versatility and ease of recycling. Furthermore, thermoplastic fibers may contain only one type of resin, or two or more types of resins, such as side-by-side fibers or sheath-core fibers.

[0054] The average fiber fineness of the nonwoven fabric is preferably 0.45 dtex to 10.0 dtex, more preferably 0.55 dtex to 8.0 dtex, and even more preferably 0.86 dtex to 5.0 dtex. From the viewpoint of spinning stability, the average fiber fineness is preferably 0.45 dtex or more, while for applications where texture is important, it is preferably 10.0 dtex or less.

[0055] The weight of the nonwoven fabric is 8g / m 2 More preferably, 10 g / m 2 ~100g / m 2 More preferably, 10 g / m or less 2 ~80g / m 2 The basis weight is 8g / m 2 If the strength is equal to or greater than this, the nonwoven fabric will be strong enough to be used in, for example, sanitary materials.

[0056] In order for the nonwoven fabric to which the processing agent has been applied to smoothly absorb urine, body fluids, etc., it is preferable that the repeated water permeability measured by the test method described below is 60% or more after the sixth repetition. If the value of the water permeability after the sixth repetition is 60% or more, when used, for example, as a top sheet or second sheet of a disposable diaper, the fabric can sufficiently pass urine even after the third repetition, thereby reducing the possibility of urine leakage. [Example]

[0057] The present invention will be specifically explained below using examples and comparative examples, but the present invention is not limited to these examples. The content ratios of each component in the obtained processing agent are shown in Tables 1 to 4 below. The evaluation methods for each characteristic are as follows, and the physical properties of the obtained nonwoven fabric are shown in Tables 5 to 8 below. Hereinafter, the flow direction in the production of nonwoven fabric is called the MD direction, and the width direction perpendicular to that direction is called the CD direction.

[0058] 1. Average fineness (dtex) The nonwoven fabric was divided into five equal parts in the CD direction to obtain 1 cm square test pieces. The fiber diameter was measured at 20 points on each piece using a Keyence VHX-700F microscope, and the average fineness was calculated from the average value and the density of the resin that makes up the fiber.

[0059] 2. Nonwoven fabric weight (g / m 2 ) In accordance with JIS-L1906:2000, five test pieces measuring 20 cm in MD x 5 cm in CD were taken so that they were evenly spaced in the CD direction of the nonwoven fabric, and the mass was measured. The average value was converted into the mass per unit area to give the basis weight (g / m 2 ) was calculated.

[0060] 3.Dry residue 5.0±0.2 g of processing agent was placed in a glass petri dish with known mass I, and mass II was measured. After that, the dish was placed, without a lid, in a hot air oven preheated to 105°C for 3 hours. Mass III of the removed dish was measured, and the dry residue was calculated using the following formula: Dry residue (%) = (mass III - mass I) / (mass II - mass I) × 100

[0061] 4. Deposition rate of pure processing agent in nonwoven fabric (mass%) (pure deposition rate) The pure adhesion rate was determined by measuring N=3 using a rapid extraction method with an Intec rapid residual oil extraction device (OC-1 type) and calculating the average value. The details of the measurement method are as follows. (1) A sample of 2g±0.5g of nonwoven fabric treated with a processing agent is taken and its mass i is measured. (2) Weigh the mass ii of the aluminum dish to receive the extract and place it on the heater of the extractor set to 150°C. (3) The sampled nonwoven fabric is packed into a metal tube. (4) Add 10cc of methanol to the metal tube and wet the nonwoven fabric. (5) Place the lid on top of the tube and let it stand for 3 minutes. This is the extraction time. (6) Use the attached handle to squeeze out the methanol from the nonwoven fabric inside the tube and drip it into the aluminum tray. (7) After visually confirming that the methanol has completely evaporated, remove the aluminum dish from the heater and allow it to air cool for 2 minutes. (8) Measure the mass iii of the aluminum dish. (9) The amount of the processing agent attached to the nonwoven fabric is calculated using the following formula: Net adhesion rate [mass%] = 100 × [(mass of aluminum plate iii) - (mass of aluminum plate ii)] / mass of nonwoven fabric i Calculated from.

[0062] 5. Retention of net adhesion rate (%) (change in adhesion rate during continuous coating) In a nonwoven fabric roll produced by continuously coating a processing agent and then winding it around a paper tube, the thickness of the roll is the distance obtained by subtracting the radius of the paper tube from the radius of the nonwoven fabric roll, and the thickness of the 10% of the roll closest to the paper tube is the inner layer (inside the roll), and the thickness of the outermost 10% of the nonwoven fabric roll is the outer layer (outside the roll).The nonwoven fabric roll is cut open, and the net adhesion rate as described in 4 above is measured at each position within the above range, and the calculation is performed using the following formula: (Retention rate of pure adhesion rate) = {(Pure adhesion rate outside the roll) ÷ (Pure adhesion rate inside the roll)} × 100 The retention rate of the pure deposition rate was calculated by the following.

[0063] 6. Repeated water permeability (%) Ten sheets of single-use toilet paper (Deluxe 100, 114 mm x 100 m rolls, manufactured by Otaka Paper Co., Ltd.) were stacked as an absorbent, and a test cloth (20 cm x 30 cm) was placed on top of them. A stainless steel plate with ten equally spaced 1.5 cm diameter holes was then placed on top of the test cloth. 0.05 g of saline solution was dropped onto the cloth from a height of 10 mm above each hole. After three minutes, another drop was performed in the same manner. After the fifth drop, the number of holes (a) that absorbed the saline within 10 seconds was counted. This test was performed on 40 locations on the same sample, and the fifth repeated water permeability (%) was calculated as {((a) x 100 / (10 holes x 40 sample locations))}. Furthermore, after the sixth drip, the number of holes (b) that were absorbed within 10 seconds was counted in the same way as the fifth drip, and the permeability (%) of the sixth drip was calculated as {((b) × 100 / (10 holes × 40 sample locations))}.

[0064] 7.45 degree inclined flow length (mm) (initial permeability) Ten sheets of single-size toilet paper (Deluxe 100, 114mm x 100m roll, manufactured by Otaka Paper Co., Ltd.) were stacked on a plate inclined at 45 degrees as absorbents, and a test cloth (20cm square) was placed on top of them. 0.05g of saline solution was dropped from a height of 10mm above the cloth. The distance that the saline solution ran down from the drop point to the end of absorption was read. This measurement was carried out at 20 random points on the test cloth. The average value was taken as the 45-degree inclined flow length (mm).

[0065] <Ingredient A> As component A, components A-1 to A-25 synthesized as follows were used. [Ingredient A-1] Polyoxyalkylene glycol was obtained by adding 29 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Component A-1 was then obtained by reacting 1 mole of this polyoxyalkylene glycol with 1 mole of lauric acid. Component A-1 is a compound represented by the general formula (3), where n is 0 and R 1 is an alkanoyl group having 12 carbon atoms, and (A 1O) It is a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40).

[0066] [Ingredient A-2] Polyoxyalkylene glycol was obtained by adding 29 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Component A-2 was then obtained by reacting 1 mole of this polyoxyalkylene glycol with 2 moles of lauric acid. Component A-2 is a compound represented by the general formula (1) where n is 0 and R 1 and R 3 is an alkanoyl group having 12 carbon atoms, and (A 1 O) It is a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40).

[0067] [Ingredient A-3] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 1 mole of this polyoxyalkylene glycol was then reacted with 1.5 moles of stearic acid to obtain component A-3. Component A-3 is a compound represented by the general formula (1), where n is 0 and R 1 and R 3 is an alkanoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75) is a 1:1 mixture of

[0068] [Ingredient A-4] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 1 mole of this polyoxyalkylene glycol was then reacted with 1.5 moles of oleic acid to obtain component A-4. Component A-4 is a compound represented by the general formula (1) where n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75) is a 1:1 mixture of

[0069] [Ingredient A-5] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 1 mole of this polyoxyalkylene glycol was then reacted with 1.2 moles of oleic acid to obtain component A-5. Component A-5 is a compound represented by the general formula (1) where n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75) is a 2:8 mixture of these.

[0070] [Ingredient A-6] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.25 moles of behenic acid to obtain Component A-6. Component A-6 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 22 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 22 carbon atoms, and (A 1 O) A 25:75 mixture of a compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75).

[0071] [Ingredient A-7] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 1 mole of this polyoxyalkylene glycol was then reacted with 1.6 moles of oleic acid to obtain component A-7. Component A-7 is a compound represented by the general formula (1) where n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75).

[0072] [Ingredient A-8] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.7 moles of oleic acid to obtain component A-8. Component A-8 is a compound represented by the general formula (1) where n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75).

[0073] [Ingredient A-9] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.8 moles of oleic acid to obtain component A-9. Component A-9 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) It is an 8:2 mixture of a compound in which l is 65 moles of propylene oxide and a compound in which a total of 10 moles of ethylene oxide are added to both ends (l is 75).

[0074] [Ingredient A-10] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 1 mole of this polyoxyalkylene glycol was then reacted with 1.9 moles of caprylic acid to obtain component A-10. Component A-10 is a compound represented by the general formula (1) where n is 0 and R 1 and R 3 is an alkanoyl group having 8 carbon atoms, and (AO)l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75), and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 8 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75) is a 9:1 mixture of

[0075] [Ingredient A-11] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.95 moles of oleic acid to obtain Component A-11. Component A-11 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75) is a 95:5 mixture.

[0076] [Ingredient A-12] Polyoxyalkylene glycol was obtained by adding 16 moles of propylene oxide and then 3 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.5 moles of oleic acid to obtain component A-12. Component A-12 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (AO)l is a group in which a total of 3 moles of ethylene oxide are added to both ends of 17 moles of propylene oxide (l is 20), and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) It is a 1:1 mixture of a compound in which l is a group in which a total of 3 moles of ethylene oxide are added to both ends of 17 moles of propylene oxide (l is 20).

[0077] [Ingredient A-13] Polyoxyalkylene glycol was obtained by adding 16 moles of propylene oxide and then 8 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.5 moles of lauric acid to obtain component A-13. Component A-13 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 12 carbon atoms, and (A 2 O) a compound in which l is a group in which a total of 8 moles of ethylene oxide are added to both ends of 17 moles of propylene oxide (l is 25); and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 12 carbon atoms, and (A 1 O) A compound in which l is a group in which a total of 8 moles of ethylene oxide are added to both ends of 17 moles of propylene oxide (l is 25).

[0078] [Ingredient A-14] Polyoxyalkylene glycol was obtained by adding 79 moles of propylene oxide and then 20 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.5 moles of oleic acid to obtain component A-14. Component A-14 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkenoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 20 moles of ethylene oxide are added to both ends of 80 moles of propylene oxide (l is 100); and a compound in which, in general formula (3), n is 0 and R 1 is an alkenoyl group having 18 carbon atoms, and (A 1 O) A compound in which l is a group in which a total of 20 moles of ethylene oxide are added to both ends of 80 moles of propylene oxide (l is 100).

[0079] [Ingredient A-15] Polyoxyalkylene glycol was obtained by adding 99 moles of propylene oxide and then 40 moles of ethylene oxide to propylene glycol in a conventional manner. 1 mole of this polyoxyalkylene glycol was then reacted with 1.5 moles of lauric acid to obtain component A-15. Component A-15 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 12 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 40 moles of ethylene oxide are added to both ends of 100 moles of propylene oxide (l is 140); and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 12 carbon atoms, and (A 1 O) A compound in which l is a group in which a total of 40 moles of ethylene oxide are added to both ends of 100 moles of propylene oxide (l is 140).

[0080] [Ingredient A-16] Polyoxyalkylene glycol was obtained by adding 64 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.5 moles of lauric acid to obtain component A-16. Component A-16 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 12 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 65 moles of propylene oxide (l is 75); and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 12 carbon atoms, and (A 1 O) A compound in which l is 65 moles of propylene oxide and a total of 10 moles of ethylene oxide attached to both ends (l is 75) is a 1:1 mixture of

[0081] [Ingredient A-17] Polyoxyalkylene glycol was obtained by adding 29 moles of propylene oxide and then 26 moles of ethylene oxide to propylene glycol in a conventional manner. Next, 1 mole of this polyoxyalkylene glycol was reacted with 1.8 moles of lauric acid to obtain component A-17. Component A-17 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 12 carbon atoms, and (A 1 O) a compound in which l is a group in which a total of 26 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 56); and a compound in which, in general formula (3), n is 0 and R 1 is an alkanoyl group having 12 carbon atoms, and (A 1 O) It is an 8:2 mixture of a compound in which l is a group in which a total of 26 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 56).

[0082] [Ingredient A-18] 34 moles of propylene oxide was added to propylene glycol in a conventional manner to obtain polypropylene glycol. Next, 1 mole of this polypropylene glycol was reacted with 2 moles of stearic acid to obtain component A-18. Component A-18 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 18 carbon atoms, and (A 1 O) is a compound where l is 35 moles of propylene oxide (l is 35).

[0083] [Ingredient A-19] Polyoxyalkylene glycol was obtained by adding 29 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 3 moles of this polyoxyalkylene glycol was then reacted with 2 moles of adipic acid. Component A-19 was then obtained by reacting this reaction product with 1 mole of lauric acid. Component A-19 is a compound represented by the general formula (3), where R 1 is an alkanoyl group having 12 carbon atoms, and (A 1 O) l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40), and R 2 is an alkylene group having 4 carbon atoms, and (A 2 O) A compound in which m is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (m is 40), and n is 2.

[0084] [Component A-20] Polyoxyalkylene glycol was obtained by adding 29 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 3 moles of this polyoxyalkylene glycol was then reacted with 2 moles of adipic acid. Component A-20 was then obtained by reacting this reaction product with 1.5 moles of lauric acid. Component A-20 is a compound represented by the general formula (1), where R 1 and R 3 is an alkanoyl group having 12 carbon atoms, and (A 1O) l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40), and R 2 is an alkylene group having 4 carbon atoms, and (A 2 O) a compound in which m is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (m is 40) and n is 2, and in general formula (3), R 1 is an alkanoyl group having 12 carbon atoms, and (A 1 O) l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40), and R 2 is an alkylene group having 4 carbon atoms, and (A 2 O) A 1:1 mixture of a compound in which m is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (m is 40) and n is 2.

[0085] [Component A-21] Polyoxyalkylene glycol was obtained by adding 29 moles of propylene oxide and then 10 moles of ethylene oxide to propylene glycol in a conventional manner. 3 moles of this polyoxyalkylene glycol was then reacted with 4 moles of adipic acid to obtain Component A-21. Component A-21 is a compound represented by the general formula (1), where R 1 and R 3 But R 4 is the butylene group -C(O)-C4H8-COOH, and (A 1 O) l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40), and R 2 is an alkylene group having 4 carbon atoms, and (A 2 O) A compound in which m is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (m is 40), and n is 2.

[0086] [Ingredient A-22] Polyoxyalkylene glycol lauryl ether was obtained by adding 5 moles of ethylene oxide to lauryl alcohol in accordance with a conventional method, followed by sequential addition of 30 moles of propylene oxide and 5 moles of ethylene oxide. Next, 1 mole of this polyoxyalkylene glycol lauryl ether was reacted with 1 mole of lauric acid to obtain component A-22. Component A-22 is a compound represented by the general formula (1) in which n is 0 and R 1 is an alkyl group having 12 carbon atoms, and R 3 is an alkanoyl group having 12 carbon atoms, and (A 1 O) It is a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40).

[0087] [Ingredient A-23] According to a conventional method, 5 moles of ethylene oxide were added to stearyl alcohol, followed by the sequential addition of 30 moles of propylene oxide and 5 moles of ethylene oxide to obtain a polyoxyalkylene glycol stearyl ether. Next, 1 mole of this polyoxyalkylene glycol stearyl ether was reacted with 1 mole of stearic acid to obtain component A-23. Component A-23 is a compound represented by the general formula (2), in which n is 0 and R 1 is an alkyl group having 18 carbon atoms, and R 3 is an alkanoyl group having 18 carbon atoms, and (A 1 O) It is a compound in which l is a group in which a total of 10 moles of ethylene oxide are added to both ends of 30 moles of propylene oxide (l is 40).

[0088] [Ingredient A-24] 29 moles of propylene oxide and then 10 moles of ethylene oxide were added to propylene glycol in a conventional manner to obtain a polyoxyalkylene glycol, designated Component A-24.

[0089] [Ingredient A-25] 44 moles of ethylene oxide was added to ethylene glycol in a conventional manner to obtain polyethylene glycol. Next, 1 mole of this polyethylene glycol was reacted with 1.5 moles of stearic acid to obtain component A-25. Component A-25 is a compound represented by the general formula (1) in which n is 0 and R 1 and R 3 is an alkanoyl group having 18 carbon atoms, and (A 1 O) a compound in which l is a group of 45 moles of ethylene oxide (l is 45), and a compound in which n is 0 and R 1 is an alkanoyl group having 18 carbon atoms, and (A 1 O) a 1:1 mixture of a compound where l is 45 moles of ethylene oxide (l is 45).

[0090] <Component B> As component B, the following components B-1 to B-7 were used. [Component B-1] As dioctyl sodium sulfosuccinate, Pelex OT-P manufactured by Kao Corporation was used. [Component B-2] As sodium polyoxyethylene lauryl ether sulfate, Emeral 20C manufactured by Kao Corporation was used. [Ingredient B-3] Neopelex G-25 manufactured by Kao Corporation was used as sodium dodecylbenzenesulfonate. [Ingredient B-4] As the sodium polycarboxylate, Cellopol PC-300 manufactured by Sanyo Chemical Industries, Ltd. was used. [Ingredient B-5] As sodium dodecyl phosphate, a reagent manufactured by Tokyo Chemical Industry Co., Ltd. was used. [Ingredient B-6] As the polyethylene glycol alkyl ether, Softanol 90 manufactured by Nippon Shokubai Co., Ltd. was used. [Ingredient B-7] Lipoguard T-28 manufactured by Lion Specialty Chemicals Co., Ltd. was used as the alkyltrimethylammonium hydrochloride.

[0091] <Component C> As component C, the following components C-1 to C-3 were used. [Component C-1] As the oleic acid, NAA-34 manufactured by NOF Corporation was used. [Component C-2] As the stearic acid, powdered stearate Sakura manufactured by NOF Corporation was used. [Component C-3] As the lauric acid, NAA-122 manufactured by NOF Corporation was used.

[0092] <Component D> As component D, the following component D-1 was used. [Ingredient D-1] Propylene glycol manufactured by ADEKA Corporation was used.

[0093] <Component E> As component E, the following components E-1 to E-4 were used. [Component E-1] As a polyether-modified silicone, KF-615A (HLB=10, viscosity 920 mm) manufactured by Shin-Etsu Chemical Co., Ltd. 2 / s) was used. [Component E-2] As a polyether-modified silicone, KF-353 (HLB=10, viscosity 430 mm) manufactured by Shin-Etsu Chemical Co., Ltd. 2 / s) was used. [Component E-3] As a polyether-modified silicone, KF-352A (HLB=7, viscosity 1600mm) manufactured by Shin-Etsu Chemical Co., Ltd. 2 / s) was used. [Ingredient E-4] As polyether-modified silicone, Dow Toray Industries, Inc.'s L-7604 (HLB=13, viscosity 400mm) 2 / s) was used.

[0094] [Example 1] The components were mixed at 30°C so that the concentrations were 69.5% by mass of component A-1, 5% by mass of component B-1, 0.5% by mass of component C-3, and 25% by mass of component E-1, to obtain the processing agent of Example 1. The content ratios of each component are shown in Table 1 below.

[0095] [Examples 2 to 48, Comparative Examples 1 to 7] The processing agents of Examples 2 to 48 and Comparative Examples 1 to 7 were obtained in the same manner as in Example 1, except that the mixing ratios of components A, B, C, D, and E were changed so that the content ratios were as shown in Tables 1 to 4 below. The content ratios of each component are shown in Tables 1 to 4 below.

[0096] [Table 1]

[0097] [Table 2]

[0098] [Table 3]

[0099] [Table 4]

[0100] The processing agents prepared as described above were applied to the following nonwoven fabrics 1 to 9 by the following coating methods 1 to 3 to produce nonwoven fabrics containing the processing agents. [Nonwoven fabric 1] Polypropylene (PP) resin with a melt flow rate (MFR) of 55 g / 10 min (measured in accordance with JIS-K7210 at 230°C and a load of 2.16 kg) was extruded at a rate of 0.88 g / min·hole using the spunbond method at a spinning temperature of 220°C. The resulting filaments were then extruded toward a moving collecting surface using a high-speed air jet pulling device to prepare a long-fiber web with an average fiber diameter of 1.5 dtex. Next, the obtained long fiber web was passed between a flat roll and an embossing roll (bonded area ratio 6.3%) to partially bond the fibers together, and the target basis weight was 13 g / m 2 The line speed was adjusted so that Nonwoven Fabric 1 was obtained.

[0101] [Nonwoven fabric 2] An ethylene-propylene random copolymer resin (r-PP) with an ethylene content of 4.3 mol% and MFR of 24 was extruded at a spinning temperature of 230°C using the spunbonding method at a throughput rate of 0.84 g / min·hole. The resulting filaments were extruded toward a moving collecting surface using a high-speed air jet drawing device to produce a long fiber web with an average fiber diameter of 1.5 dtex. The obtained long fiber web was then partially pressed together using the same flat roll / embossing roll as used in the nonwoven fabric production (1), to produce a web with the target basis weight of 13 g / m. 2 The line speed was adjusted so that Nonwoven Fabric 2 was obtained.

[0102] [Nonwoven fabric 3] A polypropylene (PP) resin with a MFR of 55 g / 10 min (measured according to JIS-K7210 at 230°C and a load of 2.16 kg) was used as the first component, and a high-density polyethylene (HDPE) resin with a MI of 26 g / 10 min (measured according to JIS-K7210 at 190°C and a load of 2.16 kg) was used as the second component. The first component and second component were extruded at a rate of 0.4 g / min·hole and 0.4 g / min·hole, respectively, for a total throughput of 0.8 g / min·hole. The ratio of the first component to the second component was 1:1. The extrusion was performed at a spinning temperature of 220°C using a spunbonding method. The extrusion filaments were then pulled toward a moving collecting surface using a high-speed air-jet towing device, producing an eccentric-sheath-core composite long fiber web with an average fiber diameter of 2.3 dtex. Next, the obtained eccentric sheath-core type composite long fiber nonwoven web was passed between a flat roll and an embossing roll (bonding area ratio 7.9%) to bond the fibers together, resulting in a basis weight of 20 g / m 2 Thus, Nonwoven Fabric 3 having a crimp count of 17 crimps / inch was obtained.

[0103] [Nonwoven fabric 4] Using the same polymers as those used in the production of Nonwoven Fabric 3, fibers were extruded at a spinning temperature of 220°C by the spunbonding method. The first component (polypropylene) was extruded at a throughput rate of 0.40 g / min·hole, the second component (high-density polyethylene) at a throughput rate of 0.40 g / min·hole, and the second component (high-density polyethylene) at a total throughput rate of 0.8 g / min·hole, resulting in a 1:1 ratio of the first component to the second component. The extruded filaments were stretched in the traction zone using the suction force of the moving collecting surface, then passed through a diffuser and deposited on the moving collecting surface to prepare a side-by-side composite long-fiber web with an average fiber diameter of 3.0 dtex. The resulting side-by-side long-fiber nonwoven web was passed between a flat roll and an embossing roll (bonded area ratio 7.9%) to bond the fibers together, resulting in a basis weight of 20 g / m. 2 Thus, Nonwoven Fabric 4 having a crimp count of 17 crimps / inch was obtained.

[0104] [Nonwoven fabric 5] Using the same polymers as those used in the production of Nonwoven Fabric 3, fibers were extruded at a spinning temperature of 220°C by the spunbond method. The first component (polypropylene) was extruded at a throughput rate of 0.40 g / min·hole, the second component (high-density polyethylene) at a throughput rate of 0.40 g / min·hole, and the second component (high-density polyethylene) at a total throughput rate of 0.8 g / min·hole, resulting in a first component to second component ratio of 1:1. The extruded filaments were stretched in the traction zone using the suction force of the moving collecting surface, then passed through a diffuser and deposited on the moving collecting surface to prepare a side-by-side composite long-fiber web with an average fiber diameter of 3.0 dtex. The resulting side-by-side long-fiber nonwoven web was bonded to itself using hot air at a temperature of 142°C and a velocity of 0.7 m / s, resulting in a basis weight of 15 g / m. 2 Thus, a nonwoven fabric 5 having a crimp count of 15 crimps per inch was obtained.

[0105] [Nonwoven fabric 6] A polypropylene (PP) resin with a MFR of 36 g / 10 min (measured at 230°C and a load of 2.16 kg according to JIS-K7210) was used as the first component, and a linear low-density polyethylene (LLDPE) resin with a MI of 17 g / 10 min (measured at 190°C and a load of 2.16 kg according to JIS-K7210) was used as the second component. The first component and second component were extruded at a rate of 0.40 g / min·hole and 0.40 g / min·hole, respectively, for a total throughput of 0.80 g / min·hole. The ratio of the first component to the second component was 1:1. The extrusion was performed at 220°C using a spunbonding method. The extrusion filaments were then pulled toward a moving collecting surface using a high-speed air-jet towing device, producing a side-by-side composite long-fiber web with an average fiber diameter of 2.8 dtex. Next, the fibers were bonded together using hot air at a temperature of 120°C and a speed of 1.0 m / s, resulting in a fabric with a basis weight of 20 g / m 2 Thus, Nonwoven Fabric 6 having a crimp count of 25 crimps per inch was obtained.

[0106] [Nonwoven fabric 7] The first component was a polyethylene terephthalate (PET) resin with a solution viscosity (ηsp / c) of 0.75, and the second component was a high-density polyethylene (HDPE) resin with a MI of 26 g / 10 min (measured at 190°C and a load of 2.16 kg according to JIS-K7210). Fibers were extruded at a spinning temperature of 220°C using a spunbond process. The first component was 0.50 g / min·hole, the second component 0.25 g / min·hole, and the total throughput was 0.75 g / min·hole. The ratio of the first component to the second component was 2:1. The extruded filaments were stretched in the pulling zone by the suction force of a moving collecting surface, then passed through a diffuser and deposited on a moving collecting surface. An eccentric sheath-core composite long fiber web with an average fiber diameter of 4.0 dtex was prepared. The obtained eccentric sheath-core type composite long fiber web was bonded to each other by hot air at a temperature of 130°C and a speed of 0.7 m / s to form a web with a basis weight of 30 g / m 2 Thus, nonwoven fabric 7 having a crimp count of 13 crimps / inch was obtained.

[0107] [Nonwoven fabric 8] A linear low-density polyethylene (LLDPE) resin with a melt index (MI) of g / 10 min (measured in accordance with JIS-K7210 at a temperature of 230°C and a load of 2.16 kg) was extruded at a spinning temperature of 220°C using the spunbond method to give a throughput of 0.55 g / min·hole. The extruded filaments were stretched in the traction zone using the suction force of the moving collecting surface, then passed through a diffuser and deposited on the moving collecting surface to prepare a long-fiber web with an average fiber diameter of 2.0 dtex. The obtained long-fiber web was then passed between a flat roll and an embossing roll (bonded area ratio 6.3%) to partially bond the fibers together, resulting in a fiber weight of 13 g / m. 2 The line speed was adjusted so that nonwoven fabric 8 was obtained.

[0108] [Nonwoven fabric 9] A polylactic acid polymer with a melting point of 167°C and MFR of 44g / 10min was dry blended with polybutylene succinate with a melt flow ratio of 1.1 to give a 10% by mass amount, and the mixture was extruded at a spinning temperature of 230°C by the spunbonding method to give a throughput of 0.8g / min·hole, to obtain a polylactic acid blend long fiber web of 2.0 dtex. The obtained long fiber web was then passed between a flat roll and an embossing roll (bonded area ratio 7.1%) to partially bond the fibers together, resulting in a desired basis weight of 13g / m. 2 The line speed was adjusted so that Nonwoven Fabric 9 was obtained.

[0109] [Coating method 1] An aqueous solution of the processing agent adjusted to a concentration of 5% by mass was applied to the nonwoven fabric using a kiss coater at a liquid temperature of 25°C, while adjusting the embrace angle of the stainless steel applicator roll and the kiss roll rotation speed so that the application amount was 10% by mass (pure adhesion rate 0.5% by mass).The nonwoven fabric was then dried by passing it through an air-through dryer at 125°C and wound up to obtain a nonwoven fabric containing the processing agent.

[0110] [Coating method 2] A 2.5% by weight aqueous solution of the processing agent was applied to the nonwoven fabric at a liquid temperature of 20°C using the rotor dampening method (RD) so that the coating amount was 20% by weight (pure deposition rate of 0.5% by weight). The nonwoven fabric was then dried through an air-through dryer at 125°C and wound up to obtain a nonwoven fabric containing the processing agent. The rotor diameter of the rotor dampening device used was 80 mm, and the rotors were spaced 115 mm apart in the CD direction, with the rotor center positioned 180 mm away from the nonwoven fabric to be coated. The rotor rotation speed was also adjusted so that the sprayed particle diameter of the processing agent was 35 μm.

[0111] [Coating method 3] A 1.67% by mass aqueous solution of the processing agent was applied to the nonwoven fabric using a 120-mesh diagonal stripe pattern with a cell volume of 22 cm, so that the application amount was 30% by mass (net adhesion rate 0.5% by mass). 3 / m 2 The coating was applied using a gravure roll and then dried by passing through a cylinder dryer at 120°C to obtain a nonwoven fabric containing the processing agent.

[0112] [Example 49] The processing agent of Example 1 was applied to nonwoven fabric 1 by coating method 1, and the fabric was wound up to a roll length of 10,000 m to obtain nonwoven fabric of Example 49. The results of various measurements of the obtained nonwoven fabric are shown in Table 5 below.

[0113] [Examples 50 to 106, Comparative Examples 8 to 14] Nonwoven fabrics of Examples 50 to 106 and Comparative Examples 8 to 14 were obtained in the same manner as in Example 49, except that the combinations of processing agents, nonwoven fabrics, and coating methods were changed as shown in Tables 5 to 8 below. The results of various measurements on the obtained nonwoven fabrics are shown in Tables 5 to 8 below.

[0114] [Table 5]

[0115] [Table 6]

[0116] [Table 7]

[0117] [Table 8] [Industrial Applicability]

[0118] The nonwoven fabric processing agent of the present invention can repeatedly give nonwoven fabrics with excellent water permeability and has little change in adhesion rate during continuous coating, and is therefore particularly suitable for use as a processing agent for nonwoven fabrics for hygiene materials, such as top sheets and second sheets of sanitary napkins, incontinence pads, disposable diapers, etc. The nonwoven fabric processing agent of the present invention can also be suitably used as a processing agent for nonwoven fabrics for masks, body warmers, tape substrates, patch substrates, emergency adhesive bandages, packaging materials, wipe products, medical gowns, bandages, clothing, and skin care sheets, for example.

Claims

1. The following general formula 1: 【Chemistry 1】 {In the formula, R 1 and R 3 are each independently a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, an alkenoyl group having 2 to 24 carbon atoms, or —C(O)—R 4 -COOX (where R 4 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and X is a hydrogen atom or an anion; 2 represents an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms; A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, l is 0 or an integer of 1 to 1000, m is an integer of 1 to 1000, and n is 0 or an integer of 1 to 100, provided that l+n is 1 or more, and A 1 or A 2 contains an alkylene group having 3 or 4 carbon atoms, and when n=0, A 1 contains an alkylene group having 3 or 4 carbon atoms, and R 1 and R 3 and an anionic surfactant B, wherein at least one of the groups represented by the formula (I) is not a hydrogen atom; The nonwoven fabric processing agent is a compound represented by the following general formula 2: R 5 -COOH ... General Formula 2 {In the formula, R 5 is an alkyl group having 7 to 21 carbon atoms or an alkenyl group having 7 to 21 carbon atoms.}, and the content of compound C is 0.02% by mass to 5% by mass based on the total mass of compound A and compound C.

2. 2. The nonwoven fabric processing agent according to claim 1, wherein the anionic surfactant B is contained in an amount of 0.5% by mass to 30% by mass based on the total mass of the compound A and the anionic surfactant B.

3. The compound A is represented by the following general formula 3: 【Chemistry 2】 {In the formula, R 1 is an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, an alkenoyl group having 2 to 24 carbon atoms, or —C(O)—R 4 -COOX (wherein R4 is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and X is a hydrogen atom or an anion), and R 2 represents an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms; A 1 and A 2 are each independently an alkylene group having 2 to 4 carbon atoms, l is 0 or an integer of 1 to 1000, m is an integer of 1 to 1000, and n is 0 or an integer of 1 to 100, provided that l+n is 1 or more, and A 1 or A 2 contains an alkylene group having 3 or 4 carbon atoms and n=0, then A 1 and contains an alkylene group having 3 or 4 carbon atoms.} is contained in an amount of 20 mass % to 95 mass % based on the total mass of compound A.

4. The following general formula 4: HO-(A) 3 O) p-H …General formula 4 {In the formula, A 3 is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3.}} in an amount of 0% by mass or more and 1% by mass or less relative to compound A.

5. The nonwoven fabric processing agent according to claim 4, further comprising a polyether-modified silicone as compound E.

6. 6. The nonwoven fabric processing agent according to claim 5, wherein the total weight of dry residues of the compound A, the anionic surfactant B, the compound C, the compound D, and the compound E after heat treatment at 105°C for 3 hours is 97 mass% or more of the total weight before the heat treatment.

7. 3. The nonwoven fabric processing agent according to claim 1, wherein the anionic surfactant B is at least one selected from the group consisting of sulfonates, sulfates, carboxylates, and phosphates.

8. A nonwoven fabric comprising the nonwoven fabric processing agent according to claim 1 or 2.

Images