Short fiber treatment agent and composition thereof, set, first treatment agent and composition thereof, second treatment agent and composition thereof, synthetic fiber, and method for manufacturing nonwoven fabric

Abstract

The present invention provides a short fiber treatment agent that can improve the stability of the short fiber treatment agent, and can improve the water repellency and antistatic properties imparted to the fiber by the short fiber treatment agent. The short fiber treatment agent of the present invention is characterized by containing component (A) described below, component (B) described below, and component (C) described below, and the nonvolatile components of the short fiber treatment agent contain 5% by mass or more to 50% by mass or less of component (A), 30% by mass or more to 75% by mass or less of component (B), and 2% by mass or more to 15% by mass or less of component (C). Component (A) is an alkyl phosphate salt having an alkyl group with 1 to 5 carbon atoms. Component (B) is a paraffin wax. Component (C) is a polyoxyalkylene polyol fatty acid ester.

Description

Technical Field

[0001] This invention relates to a short fiber treatment agent, a short fiber treatment agent kit, a composition containing a short fiber treatment agent, a first short fiber treatment agent, a second short fiber treatment agent, a composition containing the first short fiber treatment agent, a composition containing the second short fiber treatment agent, synthetic fibers, and a method for manufacturing nonwoven fabrics. Background Technology

[0002] Generally, nonwoven fabrics are made from synthetic fibers. For example, after producing staple fibers from synthetic fibers, these staple fibers are passed through a carding machine to create a carding web, thereby forming a nonwoven fabric. Furthermore, by coating the synthetic fibers with a treatment agent applied to the staple fibers, properties such as water repellency are imparted. Nonwoven fabrics made from synthetic fibers with water-repellent properties are used in a wide range of fields, including sanitary materials, medical devices, and civil engineering.

[0003] Currently, short fiber treatment agents disclosed in Patent Documents 1 and 2 are known. Patent Document 1 discloses a short fiber treatment agent containing a specific ratio of component (A) an alkyl phosphate salt having a hydrocarbon group of 14 to 22 carbon atoms, component (B) an ester compound formed by an alcohol having a hydrocarbon group of 6 to 22 carbon atoms and a fatty acid having a hydrocarbon group of 6 to 22 carbon atoms, and component (C) a polysiloxane compound. Patent Document 2 discloses a short fiber treatment agent containing a specific ratio of component (A) an ester compound formed by a monohydric alcohol having a hydrocarbon group of 12 to 22 carbon atoms and a monohydric fatty acid having a hydrocarbon group of 12 to 22 carbon atoms, component (B) an alkyl phosphate salt having an alkyl group of 4 to 8 carbon atoms, and component (C) a fatty acid having a hydrocarbon group of 12 to 22 carbon atoms.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2017 / 199702

[0007] Patent Document 2: Japanese Patent No. 6906822 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] However, besides imparting properties such as water repellency to short fibers, pre-treatment agents for short fibers are also expected to improve carding processability and suppress scum generated during the nonwoven fabric manufacturing process. To improve carding processability, it is necessary to enhance, for example, the antistatic properties of synthetic fibers coated with pre-treatment agents for short fibers. Furthermore, to suppress scum, it is necessary to improve, for example, the stability of the pre-treatment agents for short fibers.

[0010] Methods used to solve problems

[0011] In order to solve the above-mentioned problems, the inventors conducted research and found that the combination of specific alkyl phosphate salts, paraffin, and polyoxyalkylene polyol fatty acid esters has a particularly good effect.

[0012] In order to solve the above-mentioned problems, one aspect of the present invention is a short fiber treatment agent, which is characterized by: containing the following components (A), (B), and (C), wherein the non-volatile components of the short fiber treatment agent contain 5% to 50% by mass of the above-mentioned component (A), 30% to 75% by mass of the above-mentioned component (B), and 2% to 15% by mass of the above-mentioned component (C).

[0013] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0014] Ingredient (B): Paraffin.

[0015] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0016] The non-volatile components of the above-mentioned short fiber treatment agent may also contain 40% to 70% by mass of the above-mentioned component (B), or 2% to 10% by mass of the above-mentioned component (C).

[0017] The aforementioned short fiber treatment agent may also contain the following component (D).

[0018] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0019] The non-volatile components of the above-mentioned short fiber treatment agent may also contain more than 2% by mass and less than 10% by mass of the above-mentioned component (D).

[0020] The non-volatile components of the above-mentioned short fiber treatment agent may also contain the above-mentioned component (A) 20% to 40% by mass, the above-mentioned component (B) 45% to 65% by mass, the above-mentioned component (C) 4% to 8% by mass, and the above-mentioned component (D) 4% to 8% by mass.

[0021] To address the aforementioned issues, one aspect of the present invention provides a short fiber treatment agent kit, which focuses on: collectively comprising a first short fiber treatment agent and a second short fiber treatment agent, wherein the first short fiber treatment agent contains components (B) and (C) described later, and optionally contains component (D) described later; the second short fiber treatment agent contains component (A) described later; and when the first short fiber treatment agent and the second short fiber treatment agent are mixed, the non-volatile components of the obtained short fiber treatment agent contain 5% to 50% by mass of component (A), 30% to 75% by mass of component (B), and 2% to 15% by mass of component (C).

[0022] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0023] Ingredient (B): Paraffin.

[0024] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0025] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0026] In order to solve the above-mentioned problems, one aspect of the present invention is a composition containing a short fiber treatment agent, the key feature of which is that it contains the above-mentioned short fiber treatment agent and a solvent.

[0027] In order to solve the above-mentioned problems, one aspect of the present invention is a composition containing a short fiber treatment agent, which focuses on: containing the first short fiber treatment agent, the second short fiber treatment agent, and a solvent in the above-mentioned short fiber treatment agent kit.

[0028] To address the aforementioned issues, one aspect of the present invention provides a first treatment agent for short fibers, characterized in that: when used, it is used in conjunction with a second treatment agent for short fibers containing the following component (A), and when not used, it is configured with the second treatment agent for short fibers as a different agent, containing the following components (B) and (C), and optionally selectively containing the following component (D). When the first treatment agent for short fibers is mixed with the second treatment agent for short fibers, the non-volatile components of the obtained treatment agent for short fibers contain 5% to 50% by mass of the following component (A), 30% to 75% by mass of the following component (B), and 2% to 15% by mass of the following component (C).

[0029] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0030] Ingredient (B): Paraffin.

[0031] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0032] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0033] To address the aforementioned issues, one aspect of the present invention provides a second treatment agent for short fibers, characterized in that: when used, it is used in conjunction with a first treatment agent for short fibers containing the following components (B) and (C), and optionally selectively containing the following component (D); when not used, it is configured with the first treatment agent for short fibers as a different agent, containing the following component (A); when the first treatment agent for short fibers is mixed with the second treatment agent for short fibers, the non-volatile components of the obtained treatment agent for short fibers contain 5% to 50% by mass of the following component (A), 30% to 75% by mass of the following component (B), and 2% to 15% by mass of the following component (C).

[0034] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0035] Ingredient (B): Paraffin.

[0036] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0037] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0038] In order to solve the above-mentioned problems, one aspect of the present invention is a composition containing a first treatment agent for short fibers, the key feature of which is that it contains the above-mentioned first treatment agent for short fibers and a solvent.

[0039] In order to solve the above-mentioned problems, one aspect of the present invention is a composition containing a second treatment agent for short fibers, the key feature of which is that it contains the above-mentioned second treatment agent for short fibers and a solvent.

[0040] To address the aforementioned issues, one aspect of the present invention is a synthetic fiber in which the aforementioned short fiber treatment agent is attached.

[0041] To address the aforementioned issues, one aspect of the present invention is a synthetic fiber in which a short fiber treatment agent is attached, which is a mixture of the first short fiber treatment agent and the second short fiber treatment agent in the aforementioned short fiber treatment agent kit.

[0042] In order to solve the above-mentioned problems, one aspect of the present invention is a method for manufacturing nonwoven fabric, the key point of which is: through steps 1 to 3 described below.

[0043] Step 1: Apply the above-mentioned short fibers to the synthetic fibers using a treatment agent.

[0044] Step 2: Pass the synthetic fibers coated with the short fiber treatment agent from Step 1 through a carding machine to obtain a carding web.

[0045] Step 3: Perform heat welding on the carding web obtained in Step 2 to obtain nonwoven fabric.

[0046] In order to solve the above-mentioned problems, one aspect of the present invention is a method for manufacturing nonwoven fabric, the key point of which is: through steps 1 to 3 described below.

[0047] Step 1: Apply the short fiber treatment agent to the synthetic fiber. The short fiber treatment agent is a mixture of the first short fiber treatment agent and the second short fiber treatment agent in the short fiber treatment agent kit.

[0048] Step 2: Pass the synthetic fibers coated with the short fiber treatment agent from Step 1 through a carding machine to obtain a carding web.

[0049] Step 3: Perform heat welding on the carding web obtained in Step 2 to obtain nonwoven fabric.

[0050] The above-mentioned nonwoven fabric manufacturing method can also be: the above-mentioned synthetic fiber is a polyolefin synthetic fiber.

[0051] Invention Effects

[0052] According to the present invention, the stability of the short fiber treatment agent can be improved, and the water repellency and antistatic properties imparted to the fiber by the short fiber treatment agent can be improved. Detailed Implementation

[0053] <First Embodiment>

[0054] The first embodiment, which embodies the short fiber treatment agent (hereinafter referred to as the treatment agent) relating to the present invention, will be described.

[0055] The treatment agent of this embodiment contains an alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms (component A), paraffin (component B), and a polyoxyalkylene polyol fatty acid ester (component C). The treatment agent may further contain a nonionic surfactant having a (poly)oxyalkylene structure in the molecule of component (D), which is different from component (C).

[0056] (Ingredient (A): Alkyl phosphate salt)

[0057] The component (A) used in the treatment agent of this embodiment is an alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms. By containing component (A) in the treatment agent, the antistatic properties imparted by the treatment agent to the fiber can be improved.

[0058] The alkyl group constituting an alkyl phosphate salt can be linear or branched. Alkyl phosphate salts include, for example, individual monoesters, individual diesters, and mixtures of monoesters and diesters. The diester can be a symmetrical diester having the same alkyl group or an asymmetrical diester having different alkyl groups. Additionally, diphosphates can also be used.

[0059] The alkyl group has 1 to 5 carbon atoms, preferably 2 to 4 carbon atoms. Specific examples of alkyl groups include methyl, ethyl, propyl, butyl, pentyl, isobutyl, and isopentyl.

[0060] There are no particular restrictions on the phosphoric acid that constitutes alkyl phosphate salts; it can be orthophosphoric acid, diphosphoric acid, or other polyphosphoric acids.

[0061] Examples of salts that constitute alkyl phosphate salts include metal phosphate salts, amine phosphate salts, and ammonium phosphate salts.

[0062] Examples of metal salts include alkali metal salts and alkaline earth metal salts. Specific examples of alkali metals constituting alkali metal salts include sodium, potassium, and lithium. Alkaline earth metals constituting alkaline earth metal salts include elements from Group 2, such as calcium, magnesium, beryllium, strontium, and barium. Among these salts, alkali metal salts are preferred, and potassium salts are even more preferred.

[0063] The amines that make up amine salts can be any of the primary, secondary, and tertiary amines. Amines that constitute amine salts include, for example: (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, dimethyllauramine, etc.; (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, and their derivatives; (3) alkanolamines such as monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyl diethanolamine, octyl diethanolamine, lauryl diethanolamine, etc.; (4) arylamines such as N-methylbenzylamine; (5) polyoxyethylene laurylamine ether, polyoxyethylene stearylamine ether, etc.; and (6) ammonia, etc.

[0064] Of these, from the viewpoint of superior effect of the present invention, it is preferred to be a salt of an alkyl phosphate having an alkyl group having 2 or more but less than 4 carbon atoms.

[0065] Specific examples of component (A) include, for example, potassium salts of ethyl phosphate, potassium salts of propyl phosphate, potassium salts of butyl phosphate, diethanolamine salts of propyl phosphate, and diethanolamine salts of butyl phosphate.

[0066] These ingredients (A) can be used alone or in combination of two or more.

[0067] The lower limit of the content of component (A) in the non-volatile components of the treatment agent can be appropriately set, preferably 5% by mass or more, more preferably 7.5% by mass or more. When the content is 5% by mass or more, the antistatic properties imparted to the fiber by the treatment agent can be improved. The upper limit of the content of component (A) can be appropriately set, preferably 50% by mass or less, more preferably 45% by mass or less. When the content is 50% by mass or less, the water-repellent properties imparted to the fiber by the treatment agent can be improved. Any combination of the above upper and lower limits is also possible. In this specification, non-volatile components refer to the residue after the object has been heat-treated at 105°C for 2 hours to completely remove volatile substances, i.e., the absolutely dry matter.

[0068] Furthermore, when the treatment agent contains the component (D) described later, the lower limit of the content ratio of component (A) in the non-volatile components of the treatment agent can be appropriately set, preferably 5% by mass or more, more preferably 20% by mass or more. When the content ratio is 5% by mass or more, the antistatic properties imparted to the fiber by the treatment agent can be further improved. The upper limit of the content ratio of component (A) can be appropriately set, preferably 50% by mass or less, more preferably 40% by mass or less. When the content ratio is 50% by mass or less, the water-repellent properties imparted to the fiber by the treatment agent can be further improved. The range can also be any combination of the above upper and lower limits.

[0069] (Ingredient (B): Paraffin)

[0070] The component (B) used in the treatment agent of this embodiment is paraffin. By containing component (B) in the treatment agent, the water-repellent properties imparted by the treatment agent to the fibers can be improved.

[0071] There are no particular limitations on the type of paraffin wax, as long as it is a hydrocarbon suitable for use with the treatment agent. Commercially available paraffin waxes with defined melting points may also be used. The melting point can be appropriately set, preferably between 50°C and 70°C, more preferably between 50°C and 60°C. It can also be any combination of the above upper and lower limits.

[0072] The lower limit of the content of component (B) in the non-volatile components of the treatment agent can be appropriately set, preferably 30% by mass or more, and more preferably 40% by mass or more. When the content is 30% by mass or more, the water-repellent properties imparted to the fiber by the treatment agent can be improved. The upper limit of the content of component (B) can be appropriately set, preferably 75% by mass or less, and more preferably 70% by mass or less. When the content is 75% by mass or less, the stability of the treatment agent can be improved. Any combination of the above upper and lower limits is also possible.

[0073] Furthermore, when the treatment agent contains component (D) described later, the lower limit of the content ratio of component (B) in the non-volatile components of the treatment agent can be appropriately set, preferably 30% by mass or more, more preferably 45% by mass or more. When the content ratio is 30% by mass or more, the water-repellent properties imparted to the fiber by the treatment agent can be further improved. The upper limit of the content ratio of component (B) can be appropriately set, preferably 75% by mass or less, more preferably 65% ​​by mass or less. When the content ratio is 75% by mass or less, the stability of the treatment agent can be further improved. Any combination of the above upper and lower limits is also possible.

[0074] (Ingredient (C): Polyoxyalkylene polyol fatty acid ester)

[0075] The component (C) used in the treatment agent of this embodiment is a polyoxyalkylene polyol fatty acid ester. The presence of component (C) in the treatment agent enhances its stability.

[0076] Specific examples of carboxylic acids used as raw materials for component (C) include, for example, (1) straight-chain alkyl carboxylic acids such as octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, dodecanoic acid, etc.; (2) branched-chain alkyl carboxylic acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, etc.; (3) straight-chain alkenyl carboxylic acids such as octadecenoic acid, octadecadienoic acid, octadectrienoic acid, etc.; and (4) hydroxycarboxylic acids such as ricinoleic acid, etc.

[0077] The epoxide used as a raw material for forming the polyoxyalkylene structure in component (C) is preferably an epoxide with 2 to 4 carbon atoms. Specific examples of epoxides include ethylene oxide, propylene oxide, and butane oxide. The molar number of epoxides added can be appropriately set, preferably 0.1 moles to 60 moles, more preferably 1 mole to 40 moles, and most preferably 2 moles to 30 moles. It can also be any combination of the above upper and lower limits. Here, the molar number of epoxides added represents the number of moles of epoxide relative to 1 mole of the target compound in the filling raw material. One type of epoxide can be used alone, or two or more epoxides can be used in appropriate combinations. When two or more types of epoxides are used, the addition mode can be any of block addition, random addition, and a combination of block addition and random addition, without particular limitation.

[0078] Specific examples of polyols used as raw materials for component (C) include ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 1,5-pentanediol, 1,6-hexanediol, 2,5-hexanediol, 2-methyl-2,4-pentanediol, 2,3-dimethyl-2,3-butanediol, glycerol, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, dehydrosorbitol, neopentyl tertrol, sorbitol, etc.

[0079] From the viewpoint that this can further enhance the effect of the present invention, polyoxyalkylene dehydrosorbitan fatty acid esters are preferred among these.

[0080] Specific examples of component (C) include, for example, polyoxyethylene (10: representing the number of moles of epoxide added (the same applies below)) dehydrated sorbitan monooleate, polyoxyethylene (20) dehydrated sorbitan monooctadecyl ester, polyoxyethylene (10) glycerol monooleate, polyoxyethylene (20) glycerol monooctadecyl ester, polyoxyethylene (10) 1,6-hexanediol dilauryl ester, polyoxyethylene (10) trimethylolpropane trilauryl ester, etc.

[0081] These components (C) can be used alone or in combination of two or more.

[0082] The lower limit of the content ratio of component (C) in the non-volatile components of the treatment agent can be appropriately set, preferably 1% by mass or more, more preferably 2% by mass or more. When the content ratio is 1% by mass or more, the stability of the treatment agent can be improved. The upper limit of the content ratio of component (C) can be appropriately set, preferably 15% by mass or less, more preferably 10% by mass or less. When the content ratio is 15% by mass or less, the effect of the present invention can be improved. Any combination of the above upper and lower limits is also possible.

[0083] Furthermore, when the treatment agent contains component (D) described later, the lower limit of the content ratio of component (C) in the non-volatile components of the treatment agent can be appropriately set, preferably 1% by mass or more, more preferably 4% by mass or more. When the content ratio is 1% by mass or more, the stability of the treatment agent can be improved. The upper limit of the content ratio of component (C) can be appropriately set, preferably 15% by mass or less, more preferably 8% by mass or less. When the content ratio is 15% by mass or less, the effect of the present invention can be improved. The range can also be any combination of the above upper and lower limits.

[0084] (Component (D): Nonionic surfactant)

[0085] From the viewpoint of further improving the stability of the treatment agent, the treatment agent may further contain component (D). The component (D) used in the treatment agent of this embodiment is a nonionic surfactant having a (poly)oxyalkylene structure in its molecule, wherein components that meet the above-mentioned component (C) are excluded.

[0086] Component (D) may include, for example, those having a (poly)oxyalkylene structure formed by the addition of epoxides to alcohols or carboxylic acids, or those having a (poly)oxyalkylene structure formed by the addition of epoxides to alkylamines, which are amine compounds.

[0087] Specific examples of alcohols used as raw materials for component (D) include, for example: (1) straight-chain alkanols such as methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosane, dodecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, triadecanol, etc.; (2) isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononol, isodecan ... Branched alkanols such as pentadecanool, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, and isohexadecanol; (3) Straight-chain enols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, and nonadecenol; (4) Branched enols such as isohexadecanol and isohexadecanol; (5) Cyclic alkanols such as cyclopentanol and cyclohexanol; (6) Aromatic alcohols such as phenol, nonanol, benzyl alcohol, monostyrene, stilbene, and tristyrene.

[0088] Specific examples of alkylamines used as raw materials for component (D) include methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine, octadeceneamine, coconutamine, etc.

[0089] The carboxylic acid used as a raw material for component (D) can be any of the raw materials listed above for component (C) as a raw material for forming the (poly)oxyalkylene structure of component (D).

[0090] Specific examples of component (D) include, for example, polyoxyethylene (18) oil-based ether, polyoxyethylene (10) lauryl ether, polyoxyethylene (10) lauryl amino ether, polyoxyethylene (7) oil-based ester, polyoxyethylene (7) octadecyl ether, polyoxyethylene (5) oil-based ether, etc.

[0091] These components (D) can be used alone or in combination of two or more.

[0092] The lower limit of the content of component (D) in the non-volatile components of the treatment agent can be appropriately set, preferably 1% by mass or more, more preferably 2% by mass or more, and most preferably 4% by mass or more. When the content is 1% by mass or more, the stability of the treatment agent can be improved. The upper limit of the content of component (D) can be appropriately set, preferably 15% by mass or less, more preferably 10% by mass or less, and most preferably 8% by mass or less. When the content is 15% by mass or less, the water-repellent property imparted to the fiber by the treatment agent can be improved. Any combination of the above upper and lower limits is also possible.

[0093] (Preservation format)

[0094] The treatment agent may also be a combination comprising a first treatment agent for short fibers (hereinafter referred to as "first treatment agent") and a second treatment agent for short fibers (hereinafter referred to as "second treatment agent"), wherein the first treatment agent contains the aforementioned components (B) and (C), and optionally contains component (D), and the second treatment agent contains the aforementioned component (A). That is, the treatment agent may also be a kit of short fiber treatment agents comprising the first treatment agent and the second treatment agent. The kit of short fiber treatment agents may also be a combination of the first treatment agent and the second treatment agent. Before use, such as during storage or distribution, the treatment agent consists of the first treatment agent and the second treatment agent, wherein the second treatment agent is composed of a different agent than the first treatment agent. The treatment agent is prepared as a mixture of the first treatment agent and the second treatment agent only when it is used.

[0095] (solvent)

[0096] The treatment agent in this embodiment can also be mixed with a solvent as needed to prepare a composition containing a short fiber treatment agent (hereinafter referred to as "the composition containing the treatment agent"), and stored or distributed in the form of the composition containing the treatment agent. This configuration can improve the homogeneity and stability of the mixture when further diluted with a solvent during use.

[0097] The solvent is a solvent with a boiling point below 105°C at atmospheric pressure. Examples of solvents include water and organic solvents. Specific examples of organic solvents include lower alcohols such as ethanol and propanol, or low-polarity solvents such as hexane. These solvents can be used alone or in appropriate combinations of two or more. Among these, polar solvents such as water and lower alcohols are preferred from the viewpoint of excellent dispersibility or solubility of each component, while water is more preferred from the viewpoint of excellent operability.

[0098] When the total proportion of the treatment agent and solvent in the composition containing the treatment agent is set to 100 parts by mass, it is preferable to contain 10 to 80 parts by mass of the treatment agent.

[0099] The effects of the treatment agent in the first embodiment described above will be explained.

[0100] (1-1) The treatment agent of the first embodiment described above contains the aforementioned components (A), (B), and (C). Therefore, the stability of the short fiber treatment agent can be improved, and the water-repellent and antistatic properties imparted to the fiber by the short fiber treatment agent can be improved. In particular, the antistatic properties under low humidity conditions can be improved.

[0101] (1-2) When the treatment agent of the first embodiment described above further contains the above-described component (D), the stability of the treatment agent can be further improved.

[0102] (1-3) The treatment agent of the first embodiment described above may also be composed of a combination of a first treatment agent and a second treatment agent before use, such as during storage or distribution. The first treatment agent contains the aforementioned components (B) and (C), and optionally contains component (D), while the second treatment agent contains the aforementioned component (A). With this configuration, the formulation stability of the treatment agent before use, such as during storage or distribution, can be improved, especially its storage stability.

[0103] <Second Implementation>

[0104] Next, a second embodiment embodying the first processing agent of the present invention will be described, focusing on the differences from the first embodiment.

[0105] The first processing agent of this embodiment contains the aforementioned components (B) and (C), and optionally contains component (D). When used, the first processing agent is used in conjunction with a second processing agent containing component (A), and when not used, it is configured as a different agent from the second processing agent. In other words, the processing agent is only prepared as a mixture of the first and second processing agents when in use. Components (A) to (D) are the same as those described in the first embodiment.

[0106] (solvent)

[0107] The first treatment agent in this embodiment can also be mixed with a solvent as needed to prepare a composition containing the first treatment agent for short fibers (hereinafter referred to as "the composition containing the first treatment agent"), and stored or distributed in the form of the composition containing the first treatment agent. This configuration can improve the miscibility when diluted with a solvent or mixed with the second treatment agent during use, and improve the stability of the composition.

[0108] The solvent can be any as exemplified in the first embodiment. In the composition containing the first treatment agent, when the total content ratio of the first treatment agent and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more and 80 parts by mass or less of the first treatment agent.

[0109] The effects of the first processing agent in the second embodiment described above will be explained. In addition to the effects of the first embodiment, the second embodiment also has the following effects.

[0110] (2-1) The first processing agent of the second embodiment contains the aforementioned components (B) and (C), and optionally contains component (D). When not in use, it is configured as a different agent from the second processing agent containing component (A). The first processing agent is used in conjunction with the second processing agent to prepare a mixture of the first and second processing agents. Therefore, the formulation stability of the first processing agent before use, such as during storage or distribution, can be improved, especially its storage stability. Furthermore, the composition of the obtained processing agent can be adjusted by adjusting the mixing ratio with the second processing agent. In addition, the first and second processing agents can be distributed separately.

[0111] <Third Implementation>

[0112] Next, a third embodiment embodying the second processing agent of the present invention will be described, focusing on the differences from the first and second embodiments.

[0113] The second processing agent of this embodiment contains the aforementioned component (A). When used, the second processing agent is used in conjunction with the first processing agent, which contains the aforementioned components (B) and (C), and optionally, component (D). When not used, it is configured with the first processing agent as a different agent. In other words, the processing agent is only prepared as a mixture of the first and second processing agents when it is used. Components (A) to (D) are the same as those described in the first embodiment.

[0114] (solvent)

[0115] The second treatment agent in this embodiment can also be mixed with a solvent as needed to prepare a composition containing the second treatment agent for short fibers (hereinafter referred to as "the composition containing the second treatment agent"), and stored or distributed in the form of the composition containing the second treatment agent. This configuration can improve the miscibility when diluted with a solvent or mixed with the first treatment agent during use, and improve the stability of the composition.

[0116] The solvent can be any as exemplified in the first embodiment. In the composition containing the second treatment agent, when the total content ratio of the second treatment agent and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more and 80 parts by mass or less of the second treatment agent.

[0117] The effects of the second processing agent in the third embodiment described above will be explained. In addition to the effects of the first and second embodiments, the third embodiment also has the following effects.

[0118] (3-1) The second processing agent of the third embodiment contains the aforementioned component (A), and when not in use, it is configured as a different agent from the first processing agent, which contains the aforementioned components (B) and (C), and optionally, component (D). The second processing agent is used in conjunction with the first processing agent to prepare a mixture of the first and second processing agents. Therefore, the formulation stability of the second processing agent before use, such as during storage or distribution, can be improved, especially its storage stability. Furthermore, the composition of the obtained processing agent can be adjusted by adjusting the mixing ratio with the first processing agent. In addition, the second and first processing agents can be distributed separately.

[0119] <Fourth Implementation>

[0120] A fourth embodiment, which embodies the synthetic fiber of the present invention, will be described. The synthetic fiber of this embodiment is coated with the treatment agent of the first embodiment.

[0121] (synthetic fiber)

[0122] Specific examples of synthetic fibers include (1) polyolefin fibers such as polyethylene fiber, polypropylene fiber, and polybutene fiber; (2) polyester fibers such as polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate-isophthalate, and polyether polyester; (3) polyamide fibers such as nylon 6 and nylon 66; and (4) composite fibers with a core-sheath structure (composite fibers in which either or both of the core and sheath are polyolefin fibers, such as polyethylene / polypropylene composite fibers, polyethylene / polyester composite fibers, or polyethylene / polypropylene composite fibers and polyethylene / polyester composite fibers with a parallel structure). Among these, the preferred types are: polyolefin fibers such as polyethylene fibers, polypropylene fibers, and polybutene fibers; and composite fibers with a core-sheath structure (composite fibers in which either or both of the core and sheath are polyolefin fibers, such as polyethylene / polypropylene composite fibers, polyethylene / polyester composite fibers, or polyethylene / polypropylene composite fibers, polyethylene / polyester composite fibers, etc., with a polyethylene sheath). Here, polyolefin synthetic fibers refer to synthetic fibers synthesized using olefins (alkenes) as monomers.

[0123] (Uses of fibers)

[0124] Examples of applications for fibers coated with treatment agents include short fibers. Short fibers generally refer to those called "staples" and do not include long fibers called "filaments." Furthermore, the length of short fibers is not particularly limited as long as it meets the definition of short fibers in this technical field, for example, 100 mm or less, preferably 30 mm or more but less than 70 mm.

[0125] (Adhesion treatment of the treatment agent)

[0126] There is no particular limitation on the proportion of the treatment agent of the first embodiment attached to the synthetic fiber. It is preferred that the solvent-free treatment agent is attached to the synthetic fiber at a rate of 0.1% to 2% by mass, and more preferably 0.3% to 1.2% by mass.

[0127] The method for attaching the treatment agent to the synthetic fiber may be, for example, by using a composition containing the treatment agent of the first embodiment and water, or a diluted solution diluted with a solvent, and attaching it by known methods such as impregnation, spraying, roller application, or guided oiling using a metering pump.

[0128] The preparation of the composition or diluent containing the treatment agent can be carried out using known mechanical emulsification methods such as agitators or homogenizers.

[0129] (Manufacturing method of nonwoven fabric)

[0130] The synthetic fibers of this embodiment can also be used to manufacture nonwoven fabrics by the following methods.

[0131] Step 1: Apply the treatment agent of the first embodiment to the synthetic fiber.

[0132] Step 2: Pass the synthetic fibers coated with the treatment agent from Step 1 through a carding machine to obtain a carding web.

[0133] Step 3: Perform heat welding on the carding web obtained in Step 2 to obtain nonwoven fabric.

[0134] Nonwoven fabric can be manufactured through the above steps. Since nonwoven fabric is made by thermally bonding fibers together, it can also be called thermally bonded nonwoven fabric.

[0135] When manufacturing nonwoven fabrics from short fibers, from the viewpoint of superior manufacturability and performance, synthetic fibers, especially polyolefin synthetic fibers, are preferred.

[0136] The temperature of the heat fusion treatment can be appropriately set according to the type of synthetic fiber, the treatment time, etc. For example, it can be between 100℃ and 180℃, and preferably between 120℃ and 160℃. The time of the heat fusion treatment can be appropriately set according to the type of synthetic fiber, the treatment temperature, etc. For example, it can be between 1 second and 60 seconds, and preferably between 5 seconds and 20 seconds.

[0137] The effects of the synthetic fiber in the fourth embodiment described above will be explained.

[0138] (4-1) The synthetic fiber of the fourth embodiment is coated with a treatment agent containing the aforementioned components (A), (B), and (C). Therefore, the water repellency and antistatic properties of the synthetic fiber can be improved. By improving the antistatic properties, the carding processability, especially during nonwoven fabric manufacturing, can be improved. Furthermore, by improving the stability of the treatment agent, scum, especially during the short fiber manufacturing process, can be suppressed. In addition, a synthetic fiber with high safety can be obtained.

[0139] (4-2) When the synthetic fibers of the fourth embodiment are used to manufacture the heat-bonded nonwoven fabric, the bonding of the fibers during the heat-bonding process is not hindered. In addition, the treatment agent does not easily volatilize at high temperatures.

[0140] The above-described embodiments can also be modified as follows. The above-described embodiments and the following modifications can be combined and implemented with each other within the scope of technical inconsistency.

[0141] • The method for manufacturing nonwoven fabric in the above embodiments is not particularly limited, and other methods besides the method for manufacturing nonwoven fabric described in the description of the fourth embodiment may also be used.

[0142] • Without impairing the effects of the present invention, the treatment agent or composition may also contain stabilizers or antistatic agents, smoothers other than those mentioned above, surfactants other than those mentioned above, antistatic agents, antistatic auxiliaries such as polyols, binders, antioxidants, ultraviolet absorbers, defoamers, and other components commonly used in treatment agents to maintain the quality of the treatment agent or composition. From the viewpoint of effectively utilizing the performance of the present invention, other components commonly used in treatment agents besides solvents are preferably 40% by mass or less, more preferably 20% by mass or less in each treatment agent.

[0143] Example

[0144] The following embodiments are provided to illustrate the structure and effects of the present invention in more detail, but the present invention is not limited to these embodiments. Unless otherwise specified, in the following embodiments and comparative examples, parts represent parts by mass, and % represents percentages by mass.

[0145] Test Category 1 (Preparation of Treatment Agent)

[0146] (Example 1)

[0147] As shown in Table 1, 30 parts (%) of potassium salt of ethyl phosphate ester (A-1) of alkyl phosphate salt (A), 60 parts (%) of paraffin (B-1) with a melting point of 55°C, 5 parts (%) of polyoxyethylene (10) dehydrated sorbitan monooleate (C-1) of polyoxyethylene (C-1) fatty acid ester (C-1), and 5 parts (%) of polyoxyethylene (18) oleoether (D-1) of nonionic surfactant (D) were weighed and added to a container. These were mixed evenly with stirring at a temperature of about 80°C. Then, 150 parts of water at 20°C were added to the container while stirring evenly, for a total of 250 parts. Then, emulsification was performed to prepare a composition containing 40% of the treatment agent of Example 1.

[0148] (Examples 2-25, Comparative Examples 1-11)

[0149] The treatment agents of Examples 2-25 and Comparative Examples 1-11 were prepared in the same manner as the treatment agent of Example 1, and contained alkyl phosphate salts (A), paraffin (B), polyoxyalkylene polyol fatty acid esters (C), nonionic surfactants (D), and other components (E) in the proportions shown in Table 1.

[0150] The types and contents of alkyl phosphate salts (A), paraffin (B), polyoxyalkylene polyol fatty acid esters (C), nonionic surfactants (D), and other components (E) are shown in the “Component (A)”, “Component (B)”, “Component (C)”, “Component (D)”, and “Component (E)” columns of Table 1, respectively.

[0151] [Table 1]

[0152]

[0153] The details of the alkyl phosphate salts (A), paraffin (B), polyoxyalkylene polyol fatty acid esters (C), nonionic surfactants (D), and other components (E) listed in Table 1 are as follows.

[0154] (Alkyl phosphate salt (A))

[0155] The raw material alcohols used for alkyl phosphate salts (A-1) to (A-5) and (a-1) to (a-4), their carbon atom numbers, and the types of salts constituting the alkyl phosphate salts are shown in the "Raw Material Alcohols", "Cathode Number", and "Salts" columns of Table 2 described below.

[0156] [Table 2]

[0157] Ingredients(A) Raw material alcohols number of carbon atoms Salt A-1 ethanol 2 Potassium A-2 propanol 3 Potassium A-3 Butanol 4 Potassium A-4 propanol 3 diethanolamine A-5 Butanol 4 diethanolamine a-1 Hexanol 6 Potassium a-2 Octyl alcohol 8 Potassium a-3 Octadecanol 18 Potassium a-4 Octadecanol 18 sodium

[0158] (paraffin(B))

[0159] B-1: Paraffin wax with a melting point of 55℃

[0160] B-2: Paraffin wax with a melting point of 45℃

[0161] B-3: Paraffin wax with a melting point of 65°C

[0162] (Polyoxyalkylene polyol fatty acid ester (C))

[0163] C-1: Polyoxyethylene (10) dehydrated sorbitol monooleate

[0164] C-2: Polyoxyethylene (20) dehydrated sorbitol monooctadecyl ester

[0165] C-3: Polyoxyethylene (10) glyceryl monooleate

[0166] C-4: Polyoxyethylene (20) glyceryl monooctadecyl ester

[0167] C-5: Polyoxyethylene (10) 1,6-hexanediol dilaurylate

[0168] C-6: Polyoxyethylene (10) trimethylolpropane trilauryl ester

[0169] (Nonionic surfactant (D))

[0170] D-1: Polyoxyethylene (18) oil-based ether

[0171] D-2: Polyoxyethylene (10) lauryl ether

[0172] D-3: Polyoxyethylene (10) lauryl amino ether

[0173] D-4: Polyoxyethylene (7) oil-based ester

[0174] D-5: Polyoxyethylene (7) octadecyl ether

[0175] D-6: Polyoxyethylene (5) oil-based ether

[0176] (Other ingredients (E))

[0177] E-1: Diglyceride

[0178] E-2: Glycerin

[0179] E-3: Sorbitol monostearate

[0180] E-4: Dimethylpolysiloxane

[0181] E-5: Octadecanol octadecanoate

[0182] E-6: Potassium oleate

[0183] E-7: Octadecanol hexadecanoate

[0184] E-8: Ethylene oxide (1) butyl ether potassium phosphate (a mixture of 63% monoester, 12% diester, 8% diphosphate, and 17% inorganic phosphoric acid, with an acid value of 20 KOH mg / g)

[0185] Test Category 2 (Manufacturing of Synthetic Fibers and Nonwoven Fabrics)

[0186] Synthetic fibers and nonwoven fabrics are manufactured using compositions containing treatment agents prepared according to test category 1.

[0187] The synthetic fiber is a polyolefin-based synthetic fiber, composed of a composite fiber with a polyethylene sheath and a polypropylene core. This synthetic fiber is a short fiber (staple) with a fineness of 2.2 dtex and a length of 38 mm.

[0188] The formulations containing the treatment agent prepared in each example of Test Category 1 were further diluted with water to obtain a 0.4% dilution. 100g of the dilution was applied to 100g of short fibers using a spray method and dried in a dryer at 80°C for 1 hour. This ensured that the solid content (solvent-free) was adhered to the short fibers.

[0189] Furthermore, 20g of dried synthetic fibers were processed into a carding web using a known small-diameter roller carding machine at 25°C and 40% humidity. The carding web was then subjected to hot air treatment at 140°C for 10 seconds, causing the fibers to bond together and producing a fiber weighing 25g / m². 2 Non-woven fabric.

[0190] The stability was evaluated using the compositions containing the treatment agents obtained in the examples described above. Furthermore, the antistatic properties were evaluated using the obtained short fiber samples. Additionally, the water repellency was evaluated using the obtained nonwoven fabric samples.

[0191] Test Category 3 (Evaluation of Water Repellency)

[0192] The evaluation of water repellency was conducted according to the hydrostatic pressure test, Method A (low water pressure method), as described in JIS L 1092, 7.1.1. The section on the hydrostatic pressure test in JIS L 1092 corresponds to international standard ISO 811. The water pressure tester used was a Swiss-made Textest FX3000-III. The test environment was 20±2℃ and 65±2%RH. Five pieces of nonwoven fabric (approximately 150mm × approximately 150mm) prepared under test category 2 were mounted on the water pressure tester, with the surface side of the nonwoven fabric in contact with water. The water level was increased at a rate of 10cm / min, and the reading (cmw.c.) was recorded when the third water droplet appeared on the inner side of the nonwoven fabric. This test was performed five times, and the average value of the five readings was calculated. Higher water pressure resistance indicates better water repellency. Very small water droplets that do not grow larger after appearing on the inner side of the nonwoven fabric, or water droplets formed at the same location, are not included in the calculation. The test results are shown in the "Water Repellency" column of Table 1.

[0193] • Evaluation criteria for water repellency

[0194] ◎(Good): Water pressure resistance is above 3.0 cmw.c.

[0195] ○ (Acceptable): Water pressure resistance is above 1.0 cmw.c but below 3.0 cmw.c.

[0196] × (Poor): Water pressure resistance did not reach 1.0 cmw.c.

[0197] Test Category 4 (Evaluation of Antistatic Properties)

[0198] 20g of short fibers prepared under test category 2 were formed into a carding web using a small roller carding machine under low humidity conditions of 20°C and 30% relative humidity. The voltage of static electricity generated on the carding web at the exit of the carding machine under low humidity conditions was measured and evaluated using the evaluation criteria described later. The test results are shown in the "Antistatic Properties" column of Table 1.

[0199] Evaluation criteria for antistatic properties

[0200] ◎(Good): The voltage that generates static electricity did not reach 500V.

[0201] ○ (Acceptable): The voltage that generates static electricity is above 500V but below 1kV.

[0202] × (Defective): The voltage that generates static electricity is above 1kV.

[0203] Test Category 5 (Stability Evaluation)

[0204] The solution stability of the diluted treatment agent was evaluated as a substitute for the evaluation of scum formation. The components containing the treatment agent (40% treatment agent) prepared in each example of Test Category 1 were further diluted with water to prepare 1% dilutions. These 1% dilutions were placed in sealed containers and allowed to stand for 24 hours at controlled temperatures of 5°C, 20°C, and 50°C. After standing for 24 hours, the state of the solution at each temperature was visually observed, and the following evaluation criteria were used for evaluation. The test results are shown in the "Stability" column of Table 1.

[0205] • Stability evaluation criteria

[0206] ◎(Good): No precipitates or separations were observed in any of the diluents.

[0207] ○ (Acceptable): Very small amounts of precipitate or separation were observed in any of the diluents.

[0208] × (Defective): Precipitates or separation test category 6 (preparation of components containing treatment agent 1) are observed in any of the diluents.

[0209] (Composition containing the first treatment agent (1-1))

[0210] As shown in Table 3, 86 parts (%) of paraffin (B) with a melting point of 55°C, 7 parts (%) of polyoxyethylene (10) dehydrated sorbitan monooleate (C-1) of polyoxyalkylene polyol fatty acid ester (C), and 7 parts (%) of polyoxyethylene (18) oleoyl ether (D-1) of nonionic surfactant (D) were weighed and added to a container. These were then stirred and mixed evenly at a temperature of approximately 80°C. Next, 100 parts of water at 20°C of solvent (S) were added to the container while stirring and mixing evenly, for a total of 200 parts. Then, emulsification was performed to prepare a composition (1-1) containing 50% of the first treatment agent.

[0211] (Components containing the first treatment agent (1-2) to (1-25))

[0212] Compositions (1-2) to (1-25) containing the first treatment agent were prepared in the same manner as composition (1-1) containing the first treatment agent, and contained paraffin (B), polyoxyalkylene polyol fatty acid ester (C), nonionic surfactant (D), other ingredients (E), and solvent (S) in the proportions shown in Table 3.

[0213] The types and contents of paraffin (B), polyoxyalkylene polyol fatty acid esters (C), nonionic surfactants (D), other components (E), and solvents (S) are shown in the “Component (B)”, “Component (C)”, “Component (D)”, “Component (E)”, and “Solvent (S)” columns of Table 3, respectively.

[0214] [Table 3]

[0215]

[0216] Test Category 7 (Preparation of Components Containing the Second Treatment Agent)

[0217] (Composition containing the second treatment agent (2-1))

[0218] As shown in Table 4, 100 parts of the potassium salt of ethyl phosphate (A-1) of alkyl phosphate salt (A) and 100 parts of water at 20°C as solvent (S) were added and stirred until homogeneous, totaling 200 parts. Then, emulsification was performed to prepare a composition (2-1) containing 50% of the second treatment agent.

[0219] (Compositions containing the second treatment agent (2-2) to (2-5))

[0220] Compositions (2-2) to (2-5) containing the second treatment agent were prepared, which contained alkyl phosphate salts (A) and solvents (S) in the proportions shown in Table 4. The types and contents of alkyl phosphate salts (A) and solvents (S) are shown in the "Ingredients (A)" column and "Solvents (S)" column of Table 4, respectively.

[0221] [Table 4]

[0222]

[0223] Test Category 8 (Evaluation of Formulation Stability)

[0224] After preparing the compositions containing the first treatment agent and the composition containing the second treatment agent, they were transferred to a sealable container and allowed to stand at 20°C for 24 hours. The appearance was then evaluated visually using the following criteria. The results are shown in the "Formulation Stability" column of Tables 3 and 4.

[0225] • Evaluation criteria for formulation stability (components containing the first treatment agent and components containing the second treatment agent)

[0226] ◎(Good): No separation or precipitation is observed; the surface appears uniform.

[0227] ○ (Acceptable): A few particles were observed, but there were no problems with its use.

[0228] × (Defective): Severe precipitation or product separation and problems with use.

[0229] Test Category 9 (Preparation of a diluted solution of a treatment agent consisting of a composition containing the first treatment agent and a composition containing the second treatment agent)

[0230] (Examples 26-50)

[0231] In a 1000 mL beaker containing ion-exchanged water at 80°C, the composition containing the first treatment agent and the composition containing the second treatment agent were added at the ratios described in Examples 26-50 of Table 5. At this time, the total amount of the composition containing the first treatment agent and the composition containing the second treatment agent was 100 g, meaning the total amount of the first and second treatment agents added was 50 g. Finally, a 5% dilution of the treatment agent was prepared. The amount of ion-exchanged water at 80°C prepared beforehand can be adjusted appropriately depending on the concentration or amount of the composition containing the first and second treatment agents used, so that the proportion of the short fiber treatment agent is 5%.

[0232] The water repellency, antistatic properties, and stability were evaluated using diluted solutions of the treatment agents obtained in each example, in the same manner as in Example 1. The results are shown in the "Water Repellency", "Antistatic Properties", and "Stability" columns of Table 5, respectively.

[0233] [Table 5]

[0234]

[0235] The evaluation results of each embodiment relative to the comparative examples in Table 1 clearly demonstrate that the treatment agent of the present invention can improve stability. Furthermore, it can improve the water-repellent and antistatic properties imparted to synthetic fibers by the treatment agent. In addition, the first and second treatment agents of the present invention can improve formulation stability.

[0236] This disclosure also includes the following forms.

[0237] (Appendix 1)

[0238] A short fiber treatment agent, characterized in that,

[0239] It contains the following components (A), (B), and (C).

[0240] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0241] Ingredient (B): Paraffin.

[0242] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0243] (Appendix 2)

[0244] The short fiber treatment agent as described in Appendix 1, wherein...

[0245] The non-volatile components of the above-mentioned short fiber treatment agent contain the above-mentioned component (A) of 5% to 50% by mass, the above-mentioned component (B) of 40% to 70% by mass, and the above-mentioned component (C) of 2% to 10% by mass.

[0246] (Appendix 3)

[0247] The short fiber treatment agent as described in Appendix 1 or 2, wherein...

[0248] It then contains the component (D) described later.

[0249] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0250] (Appendix 4)

[0251] The short fiber treatment agent as described in Appendix 3, wherein...

[0252] The non-volatile components of the above-mentioned short fiber treatment agent contain more than 2% by mass and less than 10% by mass of the above-mentioned component (D).

[0253] (Appendix 5)

[0254] Treatment agents for short fibers as described in Appendix 3 or 4, wherein...

[0255] The non-volatile components of the above-mentioned short fiber treatment agent contain the following components: (A) 20% to 40% by mass, (B) 45% to 65% by mass, (C) 4% to 8% by mass, and (D) 4% to 8% by mass.

[0256] (Appendix 6)

[0257] The short fiber treatment agent as described in Appendix 1 or 2, wherein...

[0258] The product comprises a first treatment agent for short fibers and a second treatment agent for short fibers, wherein the first treatment agent for short fibers contains the aforementioned components (B) and (C), and optionally contains the aforementioned component (D), and the second treatment agent for short fibers contains the aforementioned component (A).

[0259] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0260] (Appendix 7)

[0261] A composition containing a short fiber treatment agent, characterized in that,

[0262] It contains the short fiber treatment agent and solvent described in any one of Appendices 1 to 6.

[0263] (Appendix 8)

[0264] A first treatment agent for short fibers, which is used in conjunction with a second treatment agent for short fibers containing the following component (A), and when not in use, is composed of the second treatment agent for short fibers in a different manner, characterized in that...

[0265] It contains the following components (B) and (C), and optionally contains the following component (D).

[0266] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0267] Ingredient (B): Paraffin.

[0268] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0269] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0270] (Appendix 9)

[0271] A second treatment agent for short fibers, when used, is used in conjunction with a first treatment agent for short fibers containing, but optionally selectively containing, components (B and C, described later); when not used, it is configured as a different agent from the first treatment agent for short fibers.

[0272] Its features are,

[0273] It contains the component (A) described later.

[0274] Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

[0275] Ingredient (B): Paraffin.

[0276] Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

[0277] Component (D): Nonionic surfactants with a (poly)oxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

[0278] (Appendix 10)

[0279] A composition containing a first treatment agent for short fibers, characterized in that,

[0280] It contains the first treatment agent and solvent for short fibers as described in Appendix 8.

[0281] (Appendix 11)

[0282] A composition containing a second treatment agent for short fibers, characterized in that,

[0283] It contains the second treatment agent and solvent for short fibers as described in Appendix 9.

[0284] (Appendix 12)

[0285] A synthetic fiber, characterized in that,

[0286] The short fiber treatment agent is attached with any one of the appendices 1 to 6.

[0287] (Appendix 13)

[0288] A method for manufacturing nonwoven fabric, characterized in that,

[0289] Through steps 1 to 3 described below.

[0290] Step 1: Apply the short fibers from any one of Appendices 1 to 6 to the synthetic fibers using the treatment agent.

[0291] Step 2: Pass the synthetic fibers coated with the short fiber treatment agent from Step 1 through a carding machine to obtain a carding web.

[0292] Step 3: Perform heat welding on the carding web obtained in Step 2 to obtain nonwoven fabric.

[0293] (Appendix 14)

[0294] The method for manufacturing nonwoven fabric as described in Appendix 13, wherein,

[0295] The aforementioned synthetic fibers are polyolefin-based synthetic fibers.

Claims

1. A treatment agent for short fibers, characterized in that, It contains components (A), (B), and (C) described later. The non-volatile components of the above-mentioned short fiber treatment agent contain 5% to 50% by mass of component (A), 30% to 75% by mass of component (B), and 2% to 15% by mass of component (C). Component (A): An alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms. Ingredient (B): Paraffin, Ingredient (C): Polyoxyalkylene polyol fatty acid ester.

2. The short fiber treatment agent as described in claim 1, wherein, The non-volatile components of the above-mentioned short fiber treatment agent contain more than 40% by mass and less than 70% by mass of the above-mentioned component (B) and more than 2% by mass and less than 10% by mass of the above-mentioned component (C).

3. The short fiber treatment agent as described in claim 1 or 2, wherein, Therefore, it contains the component (D) described later. Component (D): Nonionic surfactants with a polyoxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

4. The short fiber treatment agent as described in claim 3, wherein, The non-volatile components of the above-mentioned short fiber treatment agent contain more than 2% by mass and less than 10% by mass of the above-mentioned component (D).

5. The short fiber treatment agent as described in claim 3, wherein, The non-volatile components of the above-mentioned short fiber treatment agent contain the following components: (A) 20% to 40% by mass, (B) 45% to 65% by mass, (C) 4% to 8% by mass, and (D) 4% to 8% by mass.

6. A kit of treatment agents for staple fibers, comprising a first treatment agent for staple fibers and a second treatment agent for staple fibers, wherein the first treatment agent for staple fibers contains components (B) and (C) described later, and optionally contains component (D) described later, and the second treatment agent for staple fibers contains component (A) described later. When the first treatment agent for short fibers is mixed with the second treatment agent for short fibers, the non-volatile components of the obtained treatment agent for short fibers contain 5% to 50% by mass of component (A), 30% to 75% by mass of component (B), and 2% to 15% by mass of component (C). Component (A): An alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms. Ingredient (B): Paraffin, Ingredient (C): Polyoxyalkylene polyol fatty acid ester, Component (D): A nonionic surfactant with a polyoxyalkylene structure in its molecule, wherein, Those that meet the criteria for component (C) are excluded.

7. A composition containing a short fiber treatment agent, characterized in that, The short fiber treatment agent and solvent contained in any one of claims 1 to 5.

8. A composition containing a short fiber treatment agent, characterized in that... ， The short fiber treatment agent kit contains the first short fiber treatment agent, the second short fiber treatment agent, and the solvent as described in claim 6.

9. A first treatment agent for short fibers, which, when used, is used in conjunction with a second treatment agent for short fibers containing the following component (A), and when not used, is constituted with the second treatment agent for short fibers in a different manner, characterized in that, The agent contains components (B) and (C) described later, and optionally contains component (D) described later. When the first treatment agent for short fibers is mixed with the second treatment agent for short fibers, the non-volatile components of the obtained treatment agent for short fibers contain 5% to 50% by mass of component (A), 30% to 75% by mass of component (B), and 2% to 15% by mass of component (C). Component (A): An alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms. Ingredient (B): Paraffin, Ingredient (C): Polyoxyalkylene polyol fatty acid ester, Component (D): Nonionic surfactants with a polyoxyalkylene structure in their molecules, excluding those that meet the criteria of component (C).

10. A composition containing a first treatment agent for short fibers, characterized in that... ， It contains the first treatment agent and solvent for short fibers as described in claim 9.

11. A synthetic fiber, characterized in that, The short fiber treatment agent according to any one of claims 1 to 5 is attached.

12. A synthetic fiber, characterized in that, The short fiber treatment agent is attached, which is mixed with the first short fiber treatment agent and the second short fiber treatment agent in the short fiber treatment agent kit of claim 6.

13. A method for manufacturing a nonwoven fabric, characterized in that, Through steps 1 to 3 described below Step 1: Apply the short fibers according to any one of claims 1 to 5 to the synthetic fibers using the treatment agent. Step 2: Pass the synthetic fibers coated with the short fiber treatment agent from Step 1 through a carding machine to obtain a carding web. Step 3: Perform heat welding on the carding web obtained in Step 2 to obtain nonwoven fabric.

14. A method for manufacturing a nonwoven fabric, characterized in that, Through steps 1 to 3 described below Step 1: Adhere the short fiber treatment agent to the synthetic fiber, wherein the short fiber treatment agent is mixed with the first short fiber treatment agent and the second short fiber treatment agent from the short fiber treatment agent kit of claim 6. Step 2: Pass the synthetic fibers coated with the short fiber treatment agent from Step 1 through a carding machine to obtain a carding web. Step 3: Perform heat welding on the carding web obtained in Step 2 to obtain nonwoven fabric.

15. The method for manufacturing nonwoven fabric as described in claim 13 or 14, wherein, The aforementioned synthetic fibers are polyolefin-based synthetic fibers.

Images