JP7165455B1 - Processing agent for short fibers, processing agent set for short fibers, composition containing processing agent for short fibers, first processing agent for short fibers, second processing agent for short fibers, composition containing first processing agent for short fibers, short Composition containing second treatment agent for fibers, synthetic fiber, and method for producing nonwoven fabric - Google Patents

Abstract

The present invention provides a short fiber treatment agent and the like capable of improving the stability of the short fiber treatment agent and improving the water repellency and antistatic properties of the fibers to which the short fiber treatment agent is applied. A processing agent for short fibers of the present invention is characterized by containing the following component (A), the following component (B), and the following component (C). Component (A) is an alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms. Component (B) is paraffin wax. Component (C) is a polyoxyalkylene polyhydric alcohol fatty acid ester. [Selection figure] None

Description

The present invention comprises a short fiber treating agent, a short fiber treating agent set, a composition containing a short fiber treating agent, a first treating agent for short fibers, a second treating agent for short fibers, and a first treating agent for short fibers. The present invention relates to a composition, a composition containing a second treatment agent for short fibers, a synthetic fiber, and a method for producing a nonwoven fabric.

Synthetic fibers are generally used as raw material fibers for nonwoven fabrics. For example, nonwoven fabrics are produced by producing staples, which are short fibers of synthetic fibers, and then passing the staples through a carding machine to produce a web. Further, by applying a treatment agent for short fibers to synthetic fibers, functions such as water repellency are imparted. Nonwoven fabrics made from synthetic fibers imparted with functions such as water repellency are used in a wide range of fields such as sanitary materials, medical care, and civil engineering.

Conventionally, processing agents for short fibers disclosed in Patent Documents 1 and 2 are known. In Patent Document 1, an alkyl phosphate phosphorus salt having a hydrocarbon group with 14 to 22 carbon atoms as component (A) and an alcohol having a hydrocarbon group with 6 to 22 carbon atoms and 6 to 6 carbon atoms as component (B) Disclosed is a treatment agent for short fibers containing an ester compound with a fatty acid having 22 hydrocarbon groups and a silicone compound as component (C) in a predetermined ratio. Patent Document 2 discloses an ester compound of a monohydric alcohol having a hydrocarbon group of 12 to 22 carbon atoms as a component (A) and a monovalent fatty acid having a hydrocarbon group of 12 to 22 carbon atoms, and carbon as a component (B). Disclosed is a treatment agent for short fibers containing a fatty acid having a hydrocarbon group of 12 to 22 carbon atoms as the component (C), such as an alkyl phosphate salt having an alkyl group of 4 to 8, in a predetermined ratio. there is

WO2017/199702 Japanese Patent No. 6906822

By the way, in addition to imparting functions such as water repellency to short fibers, short fiber treatment agents improve carding processability in the manufacturing process of nonwoven fabrics and suppress scum generated in the staple manufacturing process. is also required. In order to improve the carding processability, for example, it is necessary to improve the antistatic properties of the synthetic fibers to which the short fiber treatment agent is attached. Moreover, in order to suppress scum, for example, it is necessary to improve the stability of the treatment agent for short fibers.

As a result of research aimed at solving the above problems, the present inventors have found that a composition in which a predetermined alkyl phosphate salt, paraffin wax, and polyoxyalkylene polyhydric alcohol fatty acid ester are blended is suitable.

In order to solve the above problems, the short fiber treatment agent of one aspect of the present invention is a short fiber treatment agent containing the following component (A), the following component (B), and the following component (C) In the nonvolatile matter of the short fiber treatment agent, the component (A) is 5% by mass or more and 50% by mass or less, the component (B) is 30% by mass or more and 75% by mass or less , the component (C ) is contained in an amount of 2% by mass or more and 15% by mass or less .
Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.

Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.
Even if the non-volatile content of the short fiber treatment agent contains the component (B) at a ratio of 40% by mass or more and 70% by mass or less and the component (C) at a ratio of 2% by mass or more and 10% by mass or less good.

The short fiber treatment agent may further contain the following component (D).
Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)).

The component (D) may be contained in a proportion of 2% by mass or more and 10% by mass or less in the non-volatile matter of the short fiber treatment agent.
20% by mass or more and 40% by mass or less of the component (A), 45% by mass or more and 65% by mass or less of the component (B), and 4% by mass of the component (C) in the nonvolatile matter of the short fiber treatment agent. % or more and 8 mass % or less, and the component (D) may be contained in a proportion of 4 mass % or more and 8 mass % or less.

In order to solve the above problems, a short fiber treatment agent set of one aspect of the present invention provides a short fiber treatment agent set containing the following component (B), the following component (C), and optionally the following component (D). A short fiber treating agent set comprising a first treating agent for fibers and a second treating agent for short fibers containing the following component (A), wherein the first treating agent for short fibers and the short fiber In the non-volatile matter of the short fiber treatment agent obtained when mixed with the second fiber treatment agent, the component (A) is 5% by mass or more and 50% by mass or less, and the component (B) is 30% by mass or more. The content is 75% by mass or less , and the content of the component (C) is 2% by mass or more and 15% by mass or less .
Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.

Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)).
In order to solve the above problems, a short fiber treating agent-containing composition according to one aspect of the present invention is summarized to contain the short fiber treating agent and a solvent.
In order to solve the above problems, the short fiber treatment agent-containing composition of one aspect of the present invention provides the short fiber first treatment agent and the short fiber second treatment agent in the short fiber treatment agent set. and a solvent.

In order to solve the above problems, the first treatment agent for short fibers of one aspect of the present invention is used in combination with the second treatment agent for short fibers containing the following component (A) when used, and when not in use, the short fiber first treatment agent A first treatment agent for short fibers, which is composed separately from the second treatment agent for fibers, contains the following component (B), the following component (C), and optionally the following component (D), 5% by mass or more and 50% by mass or less of the component (A) in the nonvolatile matter of the short fiber treatment agent obtained by mixing the first treatment agent for short fibers and the second treatment agent for short fibers, The content of the component (B) is 30% by mass or more and 75% by mass or less , and the content of the component (C) is 2% by mass or more and 15% by mass or less .

Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.

Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)).
In order to solve the above problems, the second treatment agent for short fibers of one aspect of the present invention provides a short fiber containing the following component (B), the following component (C), and optionally the following component (D) at the time of use. A second treatment agent for short fibers that is used in combination with the first treatment agent for fibers and is configured as a separate agent from the first treatment agent for short fibers when not in use, the second treatment agent for short fibers containing the following component (A), 5% by mass or more and 50% by mass or less of the component (A) in the nonvolatile matter of the short fiber treatment agent obtained by mixing the first treatment agent for short fibers and the second treatment agent for short fibers, The content of the component (B) is 30% by mass or more and 75% by mass or less , and the content of the component (C) is 2% by mass or more and 15% by mass or less .

Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.

Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)).
In order to solve the above problems, a composition containing a first treating agent for short fibers according to one aspect of the present invention is summarized to contain the first treating agent for short fibers and a solvent.

In order to solve the above-described problems, a composition containing a second treatment agent for short fibers according to one aspect of the present invention is summarized to contain the second treatment agent for short fibers and a solvent.
In order to solve the above problems, the gist of a synthetic fiber according to one aspect of the present invention is that the treatment agent for short fibers is attached to the synthetic fiber.
In order to solve the above problems, in the synthetic fiber of one aspect of the present invention, a short fiber obtained by mixing the first short fiber treatment agent and the second short fiber treatment agent in the short fiber treatment agent set The gist is that a processing agent is adhered.

In order to solve the above problems, a nonwoven fabric manufacturing method according to one aspect of the present invention is summarized to include the following steps 1 to 3.
Step 1: A step of adhering the short fiber treatment agent to synthetic fibers.

Step 2: A step of passing through a carding machine the synthetic fibers to which the treatment agent for short fibers has been applied in step 1 to obtain a web.
Step 3: A step of heat-sealing the web obtained in step 2 to obtain a nonwoven fabric.
In order to solve the above problems, a nonwoven fabric manufacturing method according to one aspect of the present invention is summarized to include the following steps 1 to 3.
Step 1: A step of adhering a short fiber treatment agent, which is a mixture of the first short fiber treatment agent and the second short fiber treatment agent in the short fiber treatment agent set, to synthetic fibers.
Step 2: A step of passing through a carding machine the synthetic fibers to which the treatment agent for short fibers has been applied in step 1 to obtain a web.
Step 3: A step of heat-sealing the web obtained in step 2 to obtain a nonwoven fabric.

In the method for producing a nonwoven fabric, the synthetic fibers may be polyolefin synthetic fibers.

According to the present invention, the stability of the short fiber treatment agent can be improved, and the water repellency and antistatic properties of the fibers to which the short fiber treatment agent is applied can be improved.

<First Embodiment>
A first embodiment embodying a treatment agent for short fibers (hereinafter simply referred to as a treatment agent) according to the present invention will be described.

The treatment agent of the present embodiment comprises an alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms as component (A), paraffin wax as component (B), and polyoxyalkylene polyhydric alcohol fatty acid as component (C). Contains esters. The treating agent may further contain, as component (D), a nonionic surfactant having a (poly)oxyalkylene structure in the molecule different from that of component (C).

(Component (A): Alkyl Phosphate Salt)
The component (A) used in the treatment agent of the present embodiment is an alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms. By containing the component (A) in the treatment agent, the antistatic property of the fiber to which the treatment agent is applied can be improved.

The alkyl group that constitutes the alkyl phosphate salt may be linear or branched. Alkyl phosphate salts include, for example, single monoesters, single diesters, mixtures of monoesters and diesters, and the like. The diester may be a symmetric diester having the same alkyl group or an asymmetric diester having different alkyl groups. Diphosphates may also be used.

The number of carbon atoms in the alkyl group is 1 or more and 5 or less, preferably 2 or more and 4 or less. Specific examples of the alkyl group include methyl group, ethyl group, propyl group, butyl group, pentyl group, isobutyl group, isopentyl group and the like.

Phosphoric acid constituting the alkyl phosphate is not particularly limited, and may be orthophosphoric acid or polyphosphoric acid such as diphosphoric acid.
Examples of salts constituting alkyl phosphate salts include phosphate metal salts, phosphate amine salts, and phosphate ammonium salts.

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 the alkaline earth metal salt include metals corresponding to group 2 elements such as calcium, magnesium, beryllium, strontium, and barium. Among these salts, alkali metal salts are preferred, and potassium salts are more preferred.

Any of primary amine, secondary amine, and tertiary amine may be sufficient as the amine which comprises an amine salt. Specific examples of amines constituting amine salts include (1) methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N—N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, and tributylamine. , octylamine, dimethyllaurylamine, etc. (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, and derivatives thereof, (3) monoethanolamine , N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyldiethanolamine, octyldiethanolamine, lauryldiethanolamine and other alkanolamines; (5) polyoxyalkylene alkyl amino ethers such as polyoxyethylene lauryl amino ether and polyoxyethylene steryl amino ether; and (6) ammonia.

Among these, potassium salts of alkyl phosphates having an alkyl group having 2 to 4 carbon atoms are preferable from the viewpoint of excellent effects of the present invention.
Specific examples of component (A) include ethyl phosphate potassium salt, propyl phosphate potassium salt, butyl phosphate potassium salt, propyl phosphate diethanolamine salt, and butyl phosphate diethanolamine salt. be done.

These components (A) may be used singly or in combination of two or more.
The lower limit of the content of component (A) in the nonvolatile matter of the treatment agent is 5 % by mass or more , preferably 7.5% by mass or more. When the content is 5% by mass or more, the antistatic property of the fiber to which the treatment agent is applied can be further improved. The upper limit of the content of component (A) is 50% by mass or less , preferably 45% by mass or less. When the content is 50% by mass or less, the water repellency of the fibers to which the treatment agent is applied can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned. In addition, the non-volatile content is determined from the mass of the absolute dry matter obtained by heat-treating the object at 105° C. for 2 hours to sufficiently remove volatile substances (hereinafter the same).

When the processing agent contains component (D), which will be described later, the lower limit of the content of component (A) in the nonvolatile matter of the processing agent is 5 % by mass or more , preferably 20% by mass or more. be. When the content is 5% by mass or more, the antistatic property of the fiber to which the treatment agent is applied can be further improved. The upper limit of the content of component (A) is 50% by mass or less , preferably 40% by mass or less. When the content is 50% by mass or less, the water repellency of the fibers to which the treatment agent is applied can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(Component (B): paraffin wax)
The component (B) provided for the processing agent of the present embodiment is paraffin wax. By containing the component (B) in the treatment agent, the water repellency of the fibers to which the treatment agent is applied can be improved.

The paraffin wax is not particularly limited as long as it can be applied to the treatment agent as a hydrocarbon compound. As the paraffin wax, commercially available products defined by the melting point and the like may be used as appropriate. Although the melting point is set appropriately, it is preferably 50° C. or higher and 70° C. or lower, and more preferably 50° C. or higher and 60° C. or lower. Ranges with any combination of the above upper and lower limits are also envisioned.

The lower limit of the content of component (B) in the nonvolatile matter of the treatment agent is 30% by mass or more, preferably 40% by mass or more. When the content is 30% by mass or more, the water repellency of the fibers to which the treatment agent is applied can be further improved. The upper limit of the content of component (B) is 75% by mass or less, preferably 70% by mass or less. When the content is 75% by mass or less, the stability of the treatment agent can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

When the processing agent contains component (D), which will be described later, the lower limit of the content of component (B) in the nonvolatile matter of the processing agent is 30% by mass or more, preferably 45% by mass or more. When the content is 30% by mass or more, the water repellency of the fibers to which the treatment agent is applied can be further improved. The upper limit of the content of component (B) is 75% by mass or less, preferably 65% by mass or less. When the content is 75% by mass or less, the stability of the treatment agent can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(Component (C): polyoxyalkylene polyhydric alcohol fatty acid ester)
Component (C) provided for the treatment agent of the present embodiment is a polyoxyalkylene polyhydric alcohol fatty acid ester. By containing component (C) in the processing agent, the stability of the processing agent can be improved.

Specific examples of carboxylic acids used as raw materials for component (C) include (1) octylic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, and heptadecane. linear alkyl carboxylic acids such as acids, octadecanoic acid, nonadecanic acid, eicosanoic acid, heneicosanoic acid, and docosanoic acid; (3) linear alkenylcarboxylic acids such as octadecenoic acid, octadecadienoic acid and octadecatrienoic acid; and (4) hydroxycarboxylic acids such as resinoleic acid.

As the alkylene oxide used as a raw material for forming the polyoxyalkylene structure of component (C), an alkylene oxide having 2 or more and 4 or less carbon atoms is preferable. Specific examples of alkylene oxides include ethylene oxide, propylene oxide, and butylene oxide. The number of moles of alkylene oxide to be added is appropriately set, but is preferably 0.1 to 60 mol, more preferably 1 to 40 mol, and still more preferably 2 to 30 mol. Ranges with any combination of the above upper and lower limits are also envisioned. The number of moles of alkylene oxide to be added indicates the number of moles of alkylene oxide per 1 mole of the compound to be added in the starting material. As for the alkylene oxide, one type of alkylene oxide may be used alone, or two or more types of alkylene oxide may be used in combination as appropriate. When two or more types of alkylene oxides are applied, their addition mode may be block addition, random addition, or a combination of block addition and random addition, and is not particularly limited.

Specific examples of polyhydric alcohols used as starting 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, glycerin, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitan, pentaerythritol, sorbitol and the like.

Among these, polyoxyalkylene sorbitan fatty acid esters are preferred from the viewpoint of further improving the effects of the present invention.
Specific examples of component (C) include, for example, polyoxyethylene (10: indicating the number of moles of alkylene oxide added (hereinafter the same)) sorbitan monooleyl ester, polyoxyethylene (20) sorbitan monooctadecyl ester, polyoxyethylene ( 10) Glycerin monooleyl ester, polyoxyethylene (20) glycerin monooctadecyl ester, polyoxyethylene (10) 1,6-hexanediol dilauryl ester, polyoxyethylene (10) trimethylolpropane trilauryl ester, etc. .

These components (C) may be used singly or in combination of two or more.
The lower limit of the content of component (C) in the non-volatile content of the treatment agent is appropriately set, but is preferably 1% by mass or more, more preferably 2% by mass or more. When the content is 1% by mass or more, the stability of the treatment agent can be further improved. The upper limit of the content of component (C) is appropriately set, but is preferably 15% by mass or less, more preferably 10% by mass or less. When the content is 15% by mass or less, the effects of the present invention can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

In addition, when the processing agent contains component (D), which will be described later, the lower limit of the content of component (C) in the nonvolatile matter of the processing agent is set appropriately, but is preferably 1% by mass or more, or more. Preferably, it is 4% by mass or more. When the content is 1% by mass or more, the stability of the treatment agent can be further improved. The upper limit of the content of component (C) is appropriately set, but is preferably 15% by mass or less, more preferably 8% by mass or less. When the content is 15% by mass or less, the effects of the present invention can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.
In the present invention, the component (C) is contained in an amount of 2% by mass or more and 15% by mass or less in the nonvolatile matter of the processing agent.

(Component (D): nonionic surfactant)
The processing agent may further contain component (D) from the viewpoint of further improving the stability of the processing agent. Component (D) used in the treatment agent of the present embodiment is a nonionic surfactant having a (poly)oxyalkylene structure in the molecule, excluding those corresponding to component (C) described above.

Examples of component (D) include those having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to an alcohol or a carboxylic acid, and a (poly)oxyalkylene structure obtained by adding an alkylene oxide to an alkylamine as an amine compound. and the like.

Specific examples of alcohols used as raw materials for component (D) include (1) methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, and tetradecanol. , pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosanol, heneicosanol, docosanol, tricosanol, tetracosanol, pentacosanol, hexacosanol, heptakosanol, octacosanol, nonacosanol, triacon Linear alkyl alcohols such as tanol, (2) isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isotriacontanol, isohexadecacanol isoheptadecanol, isoheptadecanol, isooctadecanol, isononadecanol, isoeicosanol, isoheneicosanol, isodocosanol, isotrichosanol, isotetracosanol, isopentacosanol, isohexacosa (3) straight-chain alkenyl alcohols such as tetradecenol, hexadecenol, heptadecenol, octadecenol and nonadecenol; (4) isohexadecenol; (5) cyclic alkyl alcohols such as cyclopentanol and cyclohexanol; (6) phenol, nonylphenol, benzyl alcohol, monostyrenated phenol, distyrenated phenol, tristyrenated Aromatic alcohols such as phenol and the like are included.

Specific examples of alkylamines used as starting materials for component (D) include methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine, octadecenylamine, and coconut amine.

As the carboxylic acid used as the raw material of component (D) and the raw material forming the (poly)oxyalkylene structure of component (D), those listed above as the raw material of component (C) can be applied.

Specific examples of component (D) include polyoxyethylene (18) oleyl ether, polyoxyethylene (10) lauryl ether, polyoxyethylene (10) lauryl amino ether, polyoxyethylene (7) oleyl ester, polyoxyethylene (7) ethylene (7) octadecyl ether, polyoxyethylene (5) oleyl ether and the like.

These components (D) may be used singly or in combination of two or more.
The lower limit of the content of component (D) in the non-volatile content of the treatment agent is appropriately set, but is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 4% by mass or more. When the content is 1% by mass or more, the stability of the treatment agent can be further improved. The upper limit of the content of component (D) is appropriately set, but is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 8% by mass or less. When the content is 15% by mass or less, the water repellency of the fibers to which the treatment agent is applied can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(preservation form)
The treatment agent includes a first treatment agent for short fibers (hereinafter referred to as "first treatment agent") containing the above-described component (B), component (C), and optionally component (D), and the above-described component It may be configured as a processing agent set including a second processing agent for short fibers containing (A) (hereinafter referred to as “second processing agent”). The processing agent set is composed of a first processing agent and a second processing agent that is separate from the first processing agent during storage, distribution, or the like. The treatment agent is prepared as a mixture in which the first treatment agent and the second treatment agent are mixed at the time of use.

(solvent)
The processing agent of the present embodiment is mixed with a solvent as necessary to prepare a short fiber processing agent-containing composition (hereinafter referred to as "processing agent-containing composition"), and stored in the form of a processing agent-containing composition. Or you may circulate. Such a configuration improves the homogeneity and stability of the mixture upon further dilution with solvent at the time of use.

The solvent is a solvent having a boiling point of 105° C. or lower at atmospheric pressure. Examples of solvents include water and organic solvents. Specific examples of organic solvents include lower alcohols such as ethanol and propanol, and low-polar solvents such as hexane. These solvents may be used singly or in combination 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, and water is more preferred from the viewpoint of excellent handling properties.

Assuming that the total content of the treating agent and the solvent is 100 parts by mass in the treating agent-containing composition, the treating agent is preferably contained in an amount of 10 parts by mass or more and 80 parts by mass or less.
The effects of the treatment agent of the first embodiment will be described.

(1-1) The treatment agent of the first embodiment contains the components (A), (B), and (C) described above. Therefore, the stability of the short fiber treatment agent can be improved, and the water repellency and antistatic properties of the fibers to which the short fiber treatment agent is applied can be improved. Antistatic properties can be improved, especially under low humidity.

(1-2) When the processing agent of the first embodiment further contains the component (D) described above, the stability of the processing agent can be further improved.
(1-3) In the processing agent of the first embodiment, the first processing agent containing the above-described component (B), component (C), and optionally component (D) during storage, distribution, or the like and a second processing agent containing the component (A) described above. Such a configuration can further improve the formulation stability, particularly storage stability, of the processing agent during storage, distribution, or the like.

<Second embodiment>
Next, a second embodiment embodying the first treatment agent of the present invention will be described. The following description will focus on differences from the first embodiment.

The first treatment agent of the present embodiment contains component (B), component (C), and optionally component (D) described above. The first treatment agent is used together with the second treatment agent containing the component (A) described above when used, and is configured as a separate agent from the second treatment agent when not used. That is, a mixture is prepared as a treatment agent in which the first treatment agent and the second treatment agent are mixed at the time of use. Components (A) to (D) are the same as the components described in the first embodiment.

(solvent)
The first treating agent of the present embodiment is mixed with a solvent if necessary to prepare a composition containing the first treating agent for short fibers (hereinafter referred to as "composition containing the first treating agent"). It may be stored or distributed in the form of a containing composition. With such a configuration, when diluting with a solvent or when mixing with the second treatment agent at the time of use, the miscibility is improved and the stability of the composition is improved.

As the solvent, those exemplified in the first embodiment can be adopted. Assuming that the total content of the first treating agent and the solvent is 100 parts by mass in the composition containing the first treating agent, the first treating agent is preferably contained in an amount of 10 parts by mass or more and 80 parts by mass or less.

The effects of the first treatment agent of the second embodiment will be described. In addition to the effect of 1st Embodiment, the said 2nd Embodiment has the following effects.
(2-1) The first treatment agent of the second embodiment contains the component (B), the component (C), and optionally the component (D) described above, and the component (A) described above except when used. It is configured as a separate agent from the second treatment agent containing. The first treatment agent is used together with the second treatment agent at the time of use, and a mixture is prepared as a treatment agent in which the first treatment agent and the second treatment agent are mixed. Therefore, it is possible to further improve the formulation stability, especially the storage stability, of the first treatment agent during storage, distribution, or the like. Also, by adjusting the mixing ratio with the second treatment agent, the components of the obtained treatment agent can be adjusted. Further, only the first treatment agent can be distributed separately from the second treatment agent.

<Third Embodiment>
Next, a third embodiment embodying the second treatment agent of the present invention will be described. The following description focuses on differences from the first and second embodiments.

The second treatment agent of this embodiment contains the component (A) described above. The second treatment agent is used in combination with the first treatment agent containing component (B), component (C), and optionally component (D) described above when in use, and is separate from the first treatment agent when not in use. configured as That is, a mixture is prepared as a treatment agent in which the first treatment agent and the second treatment agent are mixed at the time of use. Components (A) to (D) are the same as the components described in the first embodiment.

(solvent)
The second treatment agent of the present embodiment is mixed with a solvent if necessary to prepare a composition containing the second treatment agent for short fibers (hereinafter referred to as "second treatment agent-containing composition"), and the second treatment agent It may be stored or distributed in the form of a containing composition. With such a configuration, when diluting with a solvent or when mixing with the first treatment agent at the time of use, the miscibility is improved and the stability of the composition is improved.

As the solvent, those exemplified in the first embodiment can be adopted. Assuming that the total content of the second treatment agent and solvent is 100 parts by mass in the composition containing the second treatment agent, it is preferable to contain the second treatment agent in an amount of 10 parts by mass or more and 80 parts by mass or less.

The effects of the second treatment agent of the third embodiment will be described. In addition to the effects of the first and second embodiments, the third embodiment has the following effects.
(3-1) The second treatment agent of the third embodiment contains the component (A) described above, and the components (B) and (C) described above except when in use, and optionally the component (D). It is configured as a separate agent from the first treatment agent containing. The second treatment agent is used together with the first treatment agent at the time of use, and a mixture is prepared as a treatment agent in which the first treatment agent and the second treatment agent are mixed. Therefore, it is possible to further improve the formulation stability, especially the storage stability, of the second treatment agent during storage, distribution, or the like. Further, by adjusting the mixing ratio with the first treatment agent, the components of the obtained treatment agent can be adjusted. Also, only the second treatment agent can be distributed separately from the first treatment agent.

<Fourth Embodiment>
A fourth embodiment embodying the synthetic fiber according to the present invention will be described. The processing agent of the first embodiment is attached to the synthetic fiber of the present embodiment.

(Synthetic fiber)
Specific examples of synthetic fibers include (1) polyolefin fibers such as polyethylene fibers, polypropylene fibers, and polybutene fibers, and (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; , for example, polyethylene/polypropylene conjugated fibers, polyethylene/polyester conjugated fibers, or polyethylene/polypropylene conjugated fibers having a side-by-side structure, polyethylene/polyester conjugated fibers, etc., in which the sheath portion is a polyethylene fiber. Among these, polyolefin fibers such as polyethylene fibers, polypropylene fibers, and polybutene fibers, composite fibers having a core-sheath structure in which either or both of the core and the sheath are made of polyolefin fibers, for example, the sheath is made of polyethylene. Polyolefin synthetic fibers such as polyethylene/polypropylene conjugated fibers, polyethylene/polyester conjugated fibers, or polyethylene/polypropylene conjugated fibers and polyethylene/polyester conjugated fibers having a side-by-side structure are preferred. Here, the polyolefin-based synthetic fiber means a synthetic fiber synthesized using olefin or alkene as a monomer.

(Use of fiber)
Fibers to which the treatment agent is attached are used for short fibers. Short fibers generally correspond to staples and do not include long fibers generally called filaments. The length of the short fibers is not particularly limited as long as it corresponds to short fibers in this technical field, but is, for example, 100 mm or less, preferably 30 mm or more and 70 mm or less.

(Deposition treatment of treatment agent)
Although there is no particular limitation on the proportion of the treatment agent of the first embodiment attached to the synthetic fibers, the treatment agent containing no solvent can be attached to the synthetic fibers in an amount of 0.1% by mass or more and 2% by mass or less. It is more preferable to adhere so as to be 0.3% by mass or more and 1.2% by mass or less.

As a method for attaching the treatment agent to the synthetic fibers, for example, the treatment agent of the first embodiment and a treatment agent-containing composition containing water or a diluent diluted with a solvent are used, and a known method such as immersion is performed. method, spray method, roller method, guide lubrication method using a metering pump, etc. can be applied.

A known mechanical emulsification method using a homomixer, a homogenizer, or the like can be applied to the preparation of the treatment agent-containing composition or the diluted solution.
(Method for manufacturing nonwoven fabric)
Using the synthetic fiber of the present embodiment, a nonwoven fabric may be produced by the following method.

Step 1: A step of adhering the treatment agent of the first embodiment to synthetic fibers.
Step 2: A step of passing through a carding machine the synthetic fibers to which the treatment agent has been applied in step 1 to obtain a web.

Step 3: A step of heat-sealing the web obtained in step 2 to obtain a nonwoven fabric.
A nonwoven fabric can be manufactured through the above steps. The nonwoven fabric can be called a thermal bonded nonwoven fabric because the fibers are thermally fused to each other.

When a non-woven fabric is produced from short fibers, it is preferable to use polyolefin-based synthetic fibers as the synthetic fibers from the viewpoint of excellent manufacturability and usability.
The temperature of the heat-sealing treatment is appropriately set according to the type of synthetic fiber, the treatment time, and the like. The heat-sealing treatment time is appropriately set according to the type of synthetic fiber, the treatment temperature, and the like.

The effect of the synthetic fiber of the fourth embodiment will be described.
(4-1) In the synthetic fiber of the fourth embodiment, a treatment agent containing the components (A), (B), and (C) described above is attached. Therefore, the water repellency and antistatic properties of synthetic fibers can be improved. By improving the antistatic property, it is possible to improve the carding processability especially in the production of the nonwoven fabric. In addition, by improving the stability of the processing agent, scum can be suppressed particularly in the staple manufacturing process. Also, a highly safe synthetic fiber can be obtained.

(4-2) When the synthetic fibers of the fourth embodiment are used to produce a thermally bonded nonwoven fabric, the bonding of the fibers is not hindered in the thermal fusion bonding process. In addition, the processing agent is less likely to volatilize at high temperatures.
The above embodiment can be implemented with the following modifications. The above embodiments and the following modifications can be combined with each other within a technically consistent range.

- The method for producing the nonwoven fabric of the above embodiment is not particularly limited, and a method other than the method described in the column of the method for producing the nonwoven fabric of the fourth embodiment may be adopted.
The processing agent or composition contains stabilizers and antistatic agents for maintaining the quality of the processing agent or composition, smoothing agents other than the above, and surfactants other than the above, as long as the effects of the present invention are not impaired. , antistatic agents, antistatic auxiliary agents such as polyhydric alcohols, binders, antioxidants, ultraviolet absorbers, antifoaming agents, and other components commonly used in processing agents. From the viewpoint of efficiently exhibiting the effects of the present invention, the amount of other components other than the solvent that are commonly used in processing agents is preferably 40% by mass or less, more preferably 20% by mass or less, in each processing agent.

Examples will be given below in order to make the configuration and effect of the present invention more specific, but the present invention is not limited to these examples. In the following examples and comparative examples, parts means parts by weight, and % means % by weight, unless otherwise specified.

Test category 1 (preparation of treatment agent)
(Example 1)
As shown in Table 1, 30 parts (%) of ethyl phosphate potassium salt (A-1) as alkyl phosphate salt (A), paraffin wax (melting point: 55 ° C.) as paraffin wax (B) (B -1) 60 parts (%), polyoxyethylene (10) sorbitan monooleyl ester (C-1) 5 parts (%) as polyoxyalkylene polyhydric alcohol fatty acid ester (C), as nonionic surfactant (D) 5 parts (%) of polyoxyethylene (18) oleyl ether (D-1) was weighed and added to the container. These were uniformly mixed by stirring at a temperature of about 80°C. Furthermore, a total of 150 parts of water at 20° C. was added to the container and stirred to mix uniformly, making the total 250 parts. Thereafter, emulsification was carried out to prepare a composition containing 40% of the processing agent of Example 1.

(Examples 2 to 25, Comparative Examples 1 to 11)
The processing agents of Examples 2 to 25 and Comparative Examples 1 to 11 were the same as the processing agent of Example 1, and alkyl phosphate salt (A), paraffin wax (B), polyoxyalkylene polyhydric alcohol fatty acid ester ( C), nonionic surfactant (D), and other components (E) were prepared in the proportions shown in Table 1.

Type and content of alkyl phosphate salt (A), type and content of paraffin wax (B), type and content of polyoxyalkylene polyhydric alcohol fatty acid ester (C), nonionic surfactant (D) The type and content, and the type and content of other component (E) are shown in Table 1, "Component (A)" column, "Component (B)" column, "Component (C)" column, and "Component (D)" column. column and "Component (E)" column, respectively.

表１に記載するアルキルリン酸エステル塩（Ａ）、パラフィンワックス（Ｂ）、ポリオキシアルキレン多価アルコール脂肪酸エステル（Ｃ）、ノニオン界面活性剤（Ｄ）、及びその他成分（Ｅ）の詳細は以下のとおりである。

The details of the alkyl phosphate salt (A), paraffin wax (B), polyoxyalkylene polyhydric alcohol fatty acid ester (C), nonionic surfactant (D), and other components (E) listed in Table 1 are as follows. It is as follows.

(Alkyl phosphate salt (A))
Regarding the alkyl phosphate ester salts (A-1) to (A-5) and (a-1) to (a-4), the raw material alcohol used, its carbon number, and the type of salt constituting the alkyl phosphate ester salt are shown in the "raw material alcohol" column, "carbon number" column, and "salt" column of Table 2 below.

（パラフィンワックス（Ｂ））
Ｂ－１：パラフィンワックス（融点：５５℃）
Ｂ－２：パラフィンワックス（融点：４５℃）
Ｂ－３：パラフィンワックス（融点：６５℃）
（ポリオキシアルキレン多価アルコール脂肪酸エステル（Ｃ））
Ｃ－１：ポリオキシエチレン（１０）ソルビタンモノオレイルエステル
Ｃ－２：ポリオキシエチレン（２０）ソルビタンモノオクタデシルエステル
Ｃ－３：ポリオキシエチレン（１０）グリセリンモノオレイルエステル
Ｃ－４：ポリオキシエチレン（２０）グリセリンモノオクタデシルエステル
Ｃ－５：ポリオキシエチレン（１０）１，６－ヘキサンジオールジラウリルエステル
Ｃ－６：ポリオキシエチレン（１０）トリメチロールプロパントリラウリルエステル
（ノニオン界面活性剤（Ｄ））
Ｄ－１：ポリオキシエチレン（１８）オレイルエーテル
Ｄ－２：ポリオキシエチレン（１０）ラウリルエーテル
Ｄ－３：ポリオキシエチレン（１０）ラウリルアミノエーテル
Ｄ－４：ポリオキシエチレン（７）オレイルエステル
Ｄ－５：ポリオキシエチレン（７）オクタデシルエーテル
Ｄ－６：ポリオキシエチレン（５）オレイルエーテル
（その他成分（Ｅ））
Ｅ－１：ジグリセリン
Ｅ－２：グリセリン
Ｅ－３：ソルビタンモノステアレート
Ｅ－４：ジメチルシリコーン
Ｅ－５：オクタデシルアルコールオクタデカン酸エステル
Ｅ－６：オレイン酸カリウム塩
Ｅ－７：オクタデシルアルコールヘキサデカン酸エステル
Ｅ－８：オキシエチレン（１）ブチルエーテルホスフェートカリウム塩（モノエステル体６３％、ジエステル体１２％、二リン酸エステル類８％、無機リン酸１７％の混合物、酸価２０ＫＯＨｍｇ／ｇ）
試験区分２（合成繊維及び不織布の製造）
試験区分１で調製した処理剤含有組成物を用いて、合成繊維及び不織布を製造した。

(Paraffin wax (B))
B-1: Paraffin wax (melting point: 55°C)
B-2: Paraffin wax (melting point: 45°C)
B-3: Paraffin wax (melting point: 65°C)
(Polyoxyalkylene polyhydric alcohol fatty acid ester (C))
C-1: Polyoxyethylene (10) sorbitan monooleyl ester C-2: Polyoxyethylene (20) sorbitan monooctadecyl ester C-3: Polyoxyethylene (10) glycerin monooleyl ester C-4: Polyoxyethylene ( 20) Glycerin monooctadecyl ester C-5: Polyoxyethylene (10) 1,6-hexanediol dilauryl ester C-6: Polyoxyethylene (10) trimethylolpropane trilauryl ester (nonionic surfactant (D))
D-1: Polyoxyethylene (18) oleyl ether D-2: Polyoxyethylene (10) lauryl ether D-3: Polyoxyethylene (10) lauryl amino ether D-4: Polyoxyethylene (7) oleyl ester D -5: Polyoxyethylene (7) octadecyl ether D-6: Polyoxyethylene (5) oleyl ether (other component (E))
E-1: diglycerin E-2: glycerin E-3: sorbitan monostearate E-4: dimethyl silicone E-5: octadecyl alcohol octadecanoic acid ester E-6: potassium oleate E-7: octadecyl alcohol hexadecanoic acid Ester E-8: Oxyethylene (1) butyl ether phosphate potassium salt (mixture of 63% monoester, 12% diester, 8% diphosphates, 17% inorganic phosphoric acid, acid value 20 mg KOH/g)
Test category 2 (manufacturing of synthetic fibers and non-woven fabrics)
Synthetic fibers and nonwoven fabrics were produced using the treatment agent-containing composition prepared in Test Section 1.

As the synthetic fiber, a polyolefin-based synthetic fiber composed of a composite fiber having a sheath made of polyethylene and a core made of polypropylene was used. This synthetic fiber is a short fiber (staple) having a fineness of 2.2 dtex and a length of 38 mm.

The treating agent-containing composition of each example prepared in Test Section 1 was further diluted with water to obtain a 0.4% diluted solution. 100 g of the diluted solution was applied to 100 g of short fibers by a spray method, and dried in a dryer at 80° C. for 1 hour. The solid content adhesion amount is 0.4% (without solvent) with respect to the staple.

Also, 20 g of the dried synthetic fiber was subjected to a known miniature roller carding machine under conditions of a temperature of 25° C. and a humidity of 40% to form a web. This web was subjected to hot air treatment by blowing hot air at 140° C. for 10 seconds to bond the fibers together to produce a nonwoven fabric having a basis weight of 25 g/m ² .

Stability was evaluated using the treatment agent-containing composition of each example obtained as described above. Also, the obtained short fiber sample was used to evaluate the antistatic property. Moreover, water repellency was evaluated using the obtained nonwoven fabric sample.

Test category 3 (evaluation of water repellency)
The evaluation of water repellency was carried out according to the hydrostatic pressure method according to JIS L 1092 7.1.1 A method (low water pressure method). As a hydrotester, a product (FX3000-III) manufactured by Textest Co., Ltd. of Switzerland was used. The test environment was a temperature of 20±2° C. and a humidity of 65±2% RH.

Five pieces of the nonwoven fabric (approximately 150 mm x approximately 150 mm) produced in Test Section 2 were collected and attached to a hydrotester so that the front side of the nonwoven fabric was exposed to water. The water level was raised at a speed of 10 cm/min, and the indicated value (cmw.c.) was read when the third water droplet appeared on the back side of the nonwoven fabric. This test was performed 5 times and the average value of 5 times was calculated. Higher water pressure resistance indicates better water repellency. On the back side of the non-woven fabric, very small water droplets that do not grow after appearing or water droplets that pass through the same position were not taken into account. The test results are shown in the "water repellency" column of Table 1.

・Evaluation Criteria for Water Repellency ⊚ (Good): Water pressure resistance is 3.0 cmw. c. ○ (acceptable): Water pressure resistance is 1.0 cmw. c. 3.0 cmw. c. Less than x (defective): Water pressure resistance is 1.0 cmw. c. Less than test category 4 (evaluation of antistatic properties)
20 g of the short fibers produced in test section 2 were subjected to a miniature roller card machine under low humidity conditions of 20° C. and 30% relative humidity to form a web. The static electricity generated on the web at the outlet of the carding machine was measured under low humidity and evaluated according to the following evaluation criteria. The test results are shown in the "antistatic" column of Table 1.

Evaluation criteria for antistatic property ◎ (Good): Voltage of generated static electricity is less than 500 V ○ (Acceptable): Voltage of generated static electricity is 500 V or more and less than 1 kV × (Bad): Voltage of generated static electricity is 1 kV or more Test category 5 (stable) gender evaluation)
As a substitute evaluation of scum generation, the solution stability of the treatment agent diluted solution was evaluated. The treating agent-containing composition (40% treating agent) of each example prepared in Test Section 1 was further diluted with water to prepare a 1% diluted solution. This 1% diluted solution was transferred to a sealable container and allowed to stand under temperature control of 5°C, 20°C and 50°C for 24 hours. After standing still for 24 hours, the state of the solution at each temperature was visually observed and evaluated according to the following evaluation criteria. The test results are shown in the "Stability" column of Table 1.

・Stability evaluation criteria ◎ (Good): When no precipitates or separation are observed in any of the diluted solutions ○ (Fair): When a very small amount of precipitates or separation is observed in any of the diluted solutions × (defective): When precipitates or separation are observed in any of the diluted solutions Test section 6 (preparation of first treatment agent-containing composition)
(First treatment agent-containing composition (1-1))
As shown in Table 3, paraffin wax (melting point: 55 ° C.) (B-1) 86 parts (%) as paraffin wax (B), polyoxyethylene (10%) as polyoxyalkylene polyhydric alcohol fatty acid ester (C) ) 7 parts (%) of sorbitan monooleyl ester (C-1) and 7 parts (%) of polyoxyethylene (18) oleyl ether (D-1) as nonionic surfactant (D) were weighed and added to a container. . These were uniformly mixed by stirring at a temperature of about 80°C. Furthermore, a total of 100 parts of water at 20° C. was added to the container as the solvent (S), and the mixture was uniformly mixed with stirring to make a total of 200 parts. Thereafter, emulsification was carried out to prepare a first treatment agent-containing composition (1-1) containing 50% of the first treatment agent.

(First treatment agent-containing composition (1-2) to (1-25))
The first treating agent-containing compositions (1-2) to (1-25) are prepared in the same manner as the first treating agent-containing composition (1-1), paraffin wax (B), polyoxyalkylene polyhydric alcohol fatty acid ester (C), nonionic surfactant (D), other component (E), and solvent (S) were prepared in the proportions shown in Table 3.

Type and content of paraffin wax (B), type and content of polyoxyalkylene polyhydric alcohol fatty acid ester (C), type and content of nonionic surfactant (D), type and content of other component (E) The amount, the type and content of the solvent (S) are shown in Table 3, "Component (B)" column, "Component (C)" column, "Component (D)" column, "Component (E)" column, "Solvent (S)” column.

試験区分７（第２処理剤含有組成物の調製）
（第２処理剤含有組成物（２－１））
表４に示されるように、アルキルリン酸エステル塩（Ａ）としてエチルリン酸エステルのカリウム塩（Ａ－１）１００部及び溶媒（Ｓ）として２０℃の水を１００部加えながら撹拌して均一に混合し、合計２００部とした。その後、乳化を行い、第２処理剤５０％の第２処理剤含有組成物（２－１）を調製した。

Test section 7 (preparation of second treatment agent-containing composition)
(Second treatment agent-containing composition (2-1))
As shown in Table 4, 100 parts of potassium salt of ethyl phosphate (A-1) as alkyl phosphate salt (A) and 100 parts of water at 20°C as solvent (S) are added and stirred uniformly. Mixed to a total of 200 parts. After that, emulsification was carried out to prepare a second treatment agent-containing composition (2-1) containing 50% of the second treatment agent.

(Second treatment agent-containing composition (2-2) to (2-5))
Compositions (2-2) to (2-5) containing the second treatment agent were prepared so as to contain the alkyl phosphate salt (A) and the solvent (S) in the proportions shown in Table 4. The type and content of the alkyl phosphate salt (A) and the type and content of the solvent (S) are shown in the "Component (A)" column and the "Solvent (S)" column of Table 4, respectively.

試験区分８（製剤安定性の評価）
上述した各第１処理剤含有組成物及び第２処理剤含有組成物を調製後、密閉できる容器に移し、２０℃、２４時間静置した後、外観を目視で以下の基準で評価した。結果を表３，４の「製剤安定性」欄に示す。

Test Category 8 (Evaluation of Formulation Stability)
After preparing each composition containing the first treatment agent and the composition containing the second treatment agent described above, they were transferred to a sealable container, allowed to stand at 20° C. for 24 hours, and visually evaluated for appearance according to the following criteria. The results are shown in the "formulation stability" column of Tables 3 and 4.

- Evaluation criteria for formulation stability (first treatment agent-containing composition and second treatment agent-containing composition)
◎ (Good): Uniform with no separation or sedimentation ○ (Possible): Some particles are observed but does not pose a problem for use × (Poor): Severe sedimentation or product separation is a problem for use Test Section 9 (Preparation of Diluted Solution of Treatment Agent from First Treatment Agent-Containing Composition and Second Treatment Agent-Containing Composition)
(Examples 26-50)
In deionized water at 80°C prepared in a 1000 mL beaker, the first treating agent-containing composition and the second treating agent-containing composition were added at the ratios described in Examples 26 to 50 in Table 5. was added. At that time, the total amount of the composition containing the first treatment agent and the composition containing the second treatment agent was 100 g, that is, the total amount of the first treatment agent and the second treatment agent was added so as to be 50 g. Finally, a 5% dilution of the treating agent was prepared. The amount of deionized water prepared in advance at 80° C. is such that the content of the short fiber treatment agent is 5%, depending on the concentrations and amounts used of the composition containing the first treatment agent and the composition containing the second treatment agent. Adjust accordingly.

Water repellency, antistatic properties and stability were evaluated in the same manner as in Example 1 using the obtained diluted solution of the treatment agent of each example. The results are shown in the "water repellency", "antistatic", and "stability" columns of Table 5, respectively.

表１の比較例に対する各実施例の評価結果からも明らかなように、本発明の処理剤は、安定性を向上できる。また処理剤が付与された合成繊維は、撥水性及び制電性を向上できる。また、本発明の第１処理剤及び第２処理剤は、製剤安定性を向上できる。

As is clear from the evaluation results of each example with respect to the comparative examples in Table 1, the treatment agent of the present invention can improve the stability. In addition, synthetic fibers to which a treatment agent is applied can improve water repellency and antistatic properties. Moreover, the first treatment agent and the second treatment agent of the present invention can improve formulation stability.

Claims (17)

A short fiber treatment agent containing the following component (A), the following component (B), and the following component (C), wherein the component (A) is included in the non-volatile content of the short fiber treatment agent 5% by mass or more and 50% by mass or less, the component (B) of 30% by mass or more and 75% by mass or less, and the component (C) of 2% by mass or more and 15% by mass or less . agent.
Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester. 40% by mass or more and 70% by mass or less of the component (B) and 2% by mass or more and 10% by mass or less of the component (C) in the nonvolatile matter of the short fiber treatment agent. 2. The treatment agent for short fibers according to 1. The short fiber treatment agent according to claim 1 or 2, further comprising the following component (D).
Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)). The treatment agent for short fibers according to claim 3, wherein the component (D) is contained in a proportion of 2% by mass or more and 10% by mass or less in the non-volatile matter of the treatment agent for short fibers. 20% by mass or more and 40% by mass or less of the component (A), 45% by mass or more and 65% by mass or less of the component (B), and 4% by mass of the component (C) in the nonvolatile matter of the short fiber treatment agent. % or more and 8 mass % or less, and the component (D) in a proportion of 4 mass % or more and 8 mass % or less. The first treatment agent for short fibers containing the following component (B), the following component (C), and optionally the following component (D), and the second short fiber treatment agent containing the following component (A) A short fiber treatment agent set containing a treatment agent as a set, wherein the non-volatile content of the short fiber treatment agent obtained by mixing the first short fiber treatment agent and the second short fiber treatment agent 5 mass% or more and 50 mass% or less of the component (A) , 30 mass% or more and 75 mass% or less of the component (B), and 2 mass% or more and 15 mass% or less of the component (C) are contained therein. Short fiber processing agent set.
Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.
Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)). A short fiber treating agent-containing composition comprising the short fiber treating agent according to any one of claims 1 to 5 and a solvent. 7. A short fiber treatment agent-containing composition comprising the first short fiber treatment agent, the second short fiber treatment agent, and a solvent in the short fiber treatment agent set according to claim 6 thing. A first treatment agent for short fibers that is used in combination with a second treatment agent for short fibers containing the following component (A) when used, and is configured as a separate agent from the second treatment agent for short fibers when not in use, , the following component (B), the following component (C), and optionally the following component (D), obtained when the first processing agent for short fibers and the second processing agent for short fibers are mixed 5% by mass or more and 50% by mass or less of the component (A ), 30% by mass or more and 75% by mass or less of the component (B), and 2% by mass of the component (C) in the nonvolatile matter of the short fiber treatment agent. % or more and 15% by mass or less of the first treatment agent for short fibers.
Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.
Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)). When used, it is used in combination with the first treating agent for short fibers containing the following component (B), the following component (C), and optionally the following component (D), and when not in use, it is used with the first treating agent for short fibers. A second treatment agent for short fibers, which is configured as a separate agent, contains the following component (A), and is obtained when the first treatment agent for short fibers and the second treatment agent for short fibers are mixed. 5% by mass or more and 50% by mass or less of the component (A ), 30% by mass or more and 75% by mass or less of the component (B), and 2% by mass of the component (C) in the nonvolatile matter of the short fiber treatment agent. % or more and 15% by mass or less of the second treatment agent for short fibers.
Component (A): Alkyl phosphate salt having an alkyl group having 1 to 5 carbon atoms.
Component (B): Paraffin wax.
Component (C): Polyoxyalkylene polyhydric alcohol fatty acid ester.
Component (D): A nonionic surfactant having a (poly)oxyalkylene structure in the molecule (excluding those corresponding to component (C)). A composition containing the first treating agent for short fibers, comprising the first treating agent for short fibers according to claim 9 and a solvent. A composition containing the second treatment agent for short fibers, comprising the second treatment agent for short fibers according to claim 10 and a solvent. A synthetic fiber to which the short fiber treatment agent according to any one of claims 1 to 5 is attached. In the short fiber treatment agent set according to claim 6, the short fiber treatment agent in which the first short fiber treatment agent and the second short fiber treatment agent are mixed is attached. synthetic fiber. A method for producing a nonwoven fabric characterized by going through the following steps 1 to 3.
Step 1: A step of attaching the short fiber treatment agent according to any one of claims 1 to 5 to synthetic fibers.
Step 2: A step of passing through a carding machine the synthetic fibers to which the treatment agent for short fibers has been applied in step 1 to obtain a web.
Step 3: A step of heat-sealing the web obtained in step 2 to obtain a nonwoven fabric. A method for producing a nonwoven fabric characterized by going through the following steps 1 to 3.
Step 1: A short fiber treatment agent in which the first short fiber treatment agent and the second short fiber treatment agent in the short fiber treatment agent set according to claim 6 are mixed is adhered to synthetic fibers. The process of making
Step 2: A step of passing through a carding machine the synthetic fibers to which the treatment agent for short fibers has been applied in step 1 to obtain a web.
Step 3: A step of heat-sealing the web obtained in step 2 to obtain a nonwoven fabric. 17. The method for producing a nonwoven fabric according to claim 15 or 16, wherein the synthetic fibers are polyolefin synthetic fibers.