KR102114791B1 - Treatment agent for synthetic fiber filaments, synthetic fiber filaments, and base fabric - Google Patents

Abstract

The object of the present invention is to reduce fluff or fibrillation in the weaving process of synthetic fiber filaments, and for synthetic fiber filaments having excellent refining properties of the base fabric from which synthetic fiber filaments are woven. It is to provide a treatment agent, to provide a synthetic fiber filament to which the treatment agent is imparted, and to provide air bubbles woven from the synthetic fiber filament. A group consisting of an ester compound (A1) that is a condensation product of a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester and dicarboxylic acid, and an ester compound (A2) that blocks at least one hydroxyl group among the condensates with fatty acids. For synthetic fiber filaments containing essentially at least one ester compound (A) selected from, and an ether ester type ester compound (B), and containing (A) and (B) in a specific ratio and a specific total weight ratio. It was found that the treatment agent had little fluff or fibrillation and was excellent in refining properties.

Description

TREATMENT AGENT FOR SYNTHETIC FIBER FILAMENTS, SYNTHETIC FIBER FILAMENTS, AND BASE FABRIC}

The present invention relates to a treatment agent for synthetic fiber filaments, a synthetic fiber filament to which the treatment agent is applied, and a base fabric from which the filament is woven.

In recent years, fabric bubbles using synthetic fibers have been subdivided into applications such as airbags, tents, and tarpaulins. In addition, the types of synthetic fibers provided for such applications are also widening with polyester fibers, polyamide fibers, aromatic polyamide fibers, or wholly aromatic polyester fibers.

In general, the fabric foam is obtained by weaving synthetic fiber filaments to which a synthetic fiber treatment agent is imparted, by a known jet loom such as a water jet room loom or a rapier loom, and then through a refining process. Then, it is coated with a resin such as a water repellent resin emulsion to impart water repellency or airtightness to the bubbles.

In general synthetic fibers such as polyester and polyamide fibers, when weaving with high density, fluff tends to occur due to abrasion between fibers. In the case of high-strength, high-elastic synthetic fibers such as aromatic polyamide fibers and wholly aromatic polyester fibers, fluff or fibrillation is likely to occur even when weaving at low density.

As a method of solving fluff or fibrillation, it has been disclosed to impart specific ester compounds to fibers (Patent Document 1 and Patent Document 2). Obviously, this ester compound can reduce the friction between fibers and fibers, and by making the fibers flexible, has excellent performance in reducing the fluff of fibers. Accordingly, it is used for the purpose of reducing fluff or fibrillation.

Japanese Patent Publication No. 59-223368 Japanese Patent Publication No. Hei 7-173768

However, when the synthetic fiber filaments provided with the fiber treating agent containing the ester compound described in Patent Document 1 are woven to produce bubbles, and then coated with a resin such as a water repellent resin emulsion through a refining process, sufficient water repellency or airtightness to the bubbles It is common to observe that this is not given. As a result of investigating the cause, it was found that sufficient water repellency or airtightness was not imparted to the bubble because the treatment agent remained in the bubble due to insufficient refining, and the residual treatment agent inhibited the uniform coating property of the resin.

Accordingly, an object of the present invention is to provide a treatment agent for synthetic fiber filaments having excellent refining properties of air bubbles in which synthetic fiber filaments are woven, while reducing fluff or fibrillation in the process of weaving synthetic fiber filaments. It is to provide a synthetic fiber filament to which I have been imparted, and air bubbles woven from the synthetic fiber filament.

The present inventors, as a result of careful examination to solve the above problems, the treatment agent for synthetic fiber filaments containing a specific ester compound (A) and a specific ester compound (B) in a specific ratio and a specific total weight ratio, the treatment agent It was found that if the fabric was woven with synthetic fiber filaments imparted with the above treatment agent and synthetic fiber filaments imparted with the treatment agent, there was little fluff or fibrillation and excellent refining properties.

That is, the present invention is a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester and a dicarboxylic acid or a dicarboxylic acid derivative condensation product of an ester compound (A1) and at least one hydroxyl group of the condensate is blocked with a fatty acid At least one ester compound (A) selected from the group consisting of an ester compound (A2), an ester compound (B1) represented by the following general formula (1), and an ester compound (B2) represented by the following general formula (2) As a treatment agent essentially containing at least one ester compound (B) selected from the group consisting of, the weight ratio (A / B) of the ester compound (A) and the ester compound (B) is 0.01 to 3.0, and the non-volatile content of the treatment agent It is a processing agent for synthetic fiber filaments in which the weight ratio of the total of the ester compound (A) and the ester compound (B) occupies at 40% by weight or more.

[Formula 1]

(In the formula (1), R ¹ represents an alkyl group or an alkenyl group having 1 to 24 carbon atoms. R ² represents an alkyl group, an alkenyl group or an aryl group having 1 to 24 carbon atoms. A ¹ O is 2 to 4 carbon atoms. Represents an oxyalkylene group of m represents a number from 1 to 50.)

[Formula 2]

(In the formula (2), R ³ represents an alkyl group or an alkenyl group having 1 to 24 carbon atoms. R ⁴ represents an alkyl group, an alkenyl group or an aryl group having 1 to 24 carbon atoms. A ² O has 2 to 4 carbon atoms. Represents an oxyalkylene group of n represents a number from 1 to 50.)

It is preferable that the weight ratio (A / B) is 0.01 to 1.0. Moreover, it is preferable that said (A ¹ O) _m contains an oxypropylene group, and said (A ² O) _n contains an oxypropylene group.

It is preferable that the proportion of the oxypropylene group in the (A ¹ O) _m is 20 to 80 mol%, and the proportion of the oxypropylene group in the (A ² O) _n is 20 to 80 mol%.

Further comprising an organic sulfonate (C), the weight ratio of the sum of the ester compound (A) and the ester compound (B) in the nonvolatile matter of the treatment agent is 40 to 95% by weight, and the sulfonic acid in the nonvolatile matter of the treatment agent It is preferable that the weight ratio of the salt (C) is 0.1 to 10% by weight.

In the synthetic fiber filament of the present invention, the raw material synthetic fiber filament is provided with a treating agent for the synthetic fiber filament.

It is preferable that the synthetic fiber filaments have a raw material synthetic fiber filament yarn strength of 18 cN / dtex or more. Further, it is preferable that the raw material synthetic fiber filament yarn is at least one selected from the group consisting of wholly aromatic polyester fibers, wholly aromatic polyamide fibers, and wholly aromatic copolyamide fibers.

The method for producing a synthetic fiber filament of the present invention includes a step of applying the above-described treatment agent to the raw material synthetic fiber filament yarn.

The bubble from which the synthetic fiber filament of the present invention is woven is a woven synthetic fiber filament or the synthetic fiber filament obtained by the above-described manufacturing method.

The treating agent for synthetic fiber filaments of the present invention reduces lint and fibrillation in the process of weaving synthetic fiber filaments, and at the same time, has excellent refining properties of air bubbles in which synthetic fiber filaments are woven. According to the synthetic fiber filament of the present invention or the synthetic fiber filament obtained by the production method of the present invention, there is little fluff or fibrillation during weaving and excellent refining properties. Bubbles woven synthetic fiber filaments imparted with the treatment agent have less fluff and fibrillation and are excellent in refining.

1 is a schematic view of an apparatus used in a yarn-seal rubbing test of an example.
2 is a schematic diagram of water repellency evaluation of Examples.

The treatment agent for synthetic fiber filaments of the present invention essentially contains a specific ester compound (A) and a specific ester compound (B) in a specific ratio and a specific total weight ratio. It will be described in detail below.

[Ester compound (A)]

The ester compound (A) used in the present invention is an ester which is a condensation product of a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (hereinafter sometimes referred to as a polyhydroxy ester) and a dicarboxylic acid or a dicarboxylic acid derivative. It is at least 1 type of ester compound selected from the group which consists of the compound (A1) and the ester compound (A2) which block | blocked at least 1 hydroxyl group with fatty acid among the condensate. The ester compound (A) is an essential component included in the synthetic fiber treatment agent of the present invention, and it has excellent performance to increase the focusing property and reduce fluff or fibrillation in the weaving process. Therefore, it is a component capable of reducing fluff or fibrillation even when used alone, but is a component that further improves the performance of reducing fluff and fibrillation by using it in combination with the ester compound (B) described later.

Here, the dicarboxylic acid derivative is a derivative capable of forming a carboxylic acid ester with a hydroxyl group-containing compound by an esterification reaction or an transesterification reaction. That is, alkyl esters of dicarboxylic acids, acid anhydrides, amides, and the like can be exemplified.

The polyhydroxy ester constituting the ester compound (A1) is structurally an ester of a polyoxyalkylene group-containing hydroxy fatty acid and a polyhydric alcohol, and among the hydroxyl groups of the polyhydric alcohol, two or more (preferably all) hydroxyl groups Esterified. Therefore, the polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester is an ester having a plurality of hydroxyl groups.

The polyoxyalkylene group-containing hydroxy fatty acid has a structure in which the polyoxyalkylene group is bonded through an oxygen atom to the hydrocarbon group of the fatty acid, and the one end that is not bonded to the hydrocarbon group of the fatty acid of the polyoxyalkylene group is a hydroxyl group.

Examples of the polyhydroxy ester include alkylene oxide adducts of esterification products of hydroxy fatty acids having 6 to 22 carbon atoms (preferably 12 to 22) and polyhydric alcohols. When the number of carbon atoms of the hydroxy fatty acid is less than 6, the focusing property is lowered, and there is a possibility that the performance of reducing fluff or fibrillation is reduced. On the other hand, when it exceeds 22, when it is used together with the ester compound (B) mentioned later, there exists a possibility that refinement property may fall.

Examples of the hydroxy fatty acid having 6 to 22 carbon atoms include, for example, hydroxycaprylic acid, hydroxycapric acid, hydroxyundecanoic acid, hydroxylauric acid, hydroxystearic acid and ricinoleic acid. Roxystearic acid and ricinoleic acid are preferred.

Examples of the polyhydric alcohol include ethylene glycol, glycerin, trimethylolpropane, sorbitan, sorbitol, pentaerythritol, diglycerin, dipentaerythritol, ditrimethylolpropane, and the like, and glycerin is preferable. Examples of the alkylene oxide include alkylene oxides having 2 to 4 carbon atoms, such as ethylene oxide, propylene oxide and butylene oxide.

The polyhydroxy ester is, for example, esterified with a polyhydric alcohol and a hydroxy fatty acid (hydroxymonocarboxylic acid) under normal conditions to obtain an esterified product, followed by addition reaction of an alkylene oxide to the esterified product. Can be produced. The polyhydroxy ester can be preferably produced by using a fat or oil obtained from nature such as castor oil or a cured castor oil to which hydrogen is added thereto and further reacting an alkylene oxide. When producing a polyhydroxy ester, it is preferable that the carboxyl group equivalent of the hydroxy fatty acid per 1 molar equivalent of the hydroxyl group of the polyhydric alcohol is in the range of 0.5 to 1.

The number of moles of alkylene oxide added is preferably 50 or less, more preferably 5 to 30, per molecule of the hydroxy fatty acid polyhydric alcohol ester. When the number of moles added exceeds 50, when used in combination with the ester compound (B) described later, there is a possibility that the refining property is lowered. The proportion of ethylene oxide in the alkylene oxide is preferably 40 mol% or more, and more preferably 75 mol% or more. As the proportion of ethylene oxide increases, a tendency to improve refining properties is observed. When two or more types of alkylene oxides are added, the order of addition is not particularly limited, and the addition form may be either a block type or a random type. The alkylene oxide can be added by a known method, but it is generally performed in the presence of a basic catalyst.

The ester compound (A1) used in the present invention is a condensation product of a polyhydroxy ester and a dicarboxylic acid or dicarboxylic acid derivative. When producing the ester compound (A1), the carboxyl group equivalent of dicarboxylic acid per 1 molar equivalent of hydroxyl group of the polyhydroxy ester is preferably in the range of 0.2 to 1, more preferably 0.4 to 0.8. In order to obtain the above-mentioned condensate, the general reaction conditions for obtaining an esterified product such as a normal esterification reaction or transesterification reaction may be high, and there is no particular limitation. As for the carbon number of the dicarboxylic acid part of dicarboxylic acid (or dicarboxylic acid derivative), 2-10 are preferable, and 2-8 are more preferable. When the number of carbon atoms of the dicarboxylic acid exceeds 10, when used in combination with the ester compound (B) described later, there is a possibility that the refining property is lowered.

Examples of the dicarboxylic acid as a raw material for imparting such condensation products include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, maleic acid, and fumaric acid. , Terephthalic acid, isophthalic acid, and the like. In addition, as dicarboxylic acid derivatives, in addition to the dicarboxylic acid as a raw material for the above-mentioned condensate, malonic anhydride, succinic anhydride, glutaric anhydride, adipic acid anhydride, pimelic anhydride, suberic anhydride, azelaic anhydride, anhydride Acidic anhydrides such as sebacic acid and maleic anhydride, dicarboxylic acid esters such as dimethyl malonate, diethyl malonate and dimethyl adipic acid are also exemplified, but are not particularly limited to these. In addition to dicarboxylic acids (or dicarboxylic acid derivatives), carboxylic acids such as lauric acid, oleic acid, stearic acid, behenic acid, and benzoic acid may be contained in an amount of 20% by weight or less (preferably 10% by weight or less).

The ester compound (A2) used in the present invention is obtained by blocking at least one hydroxyl group with a fatty acid in the ester compound (A1). The carbon number of the fatty acid to be blocked is preferably 10 to 50, more preferably 12 to 36. In addition, if the number of carbon atoms of the fatty acid is less than 10, the focusability decreases, and there is a possibility that the performance of reducing fluff or fibrillation decreases. On the other hand, when it exceeds 50, when used in combination with the ester compound (B) described below, There is a possibility that sex will deteriorate.

In this way, the concentration and refining property of the ester compound (A1) can be adjusted in accordance with the other components to be blended or the fibers to be applied, and sufficient performance and refining properties to reduce fluff or fibrillation can be obtained. .

Examples of such fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, dichoic acid, behenic acid, lignoseric acid, nerbonic acid, serotinic acid, montanic acid, melisic acid, and lanolin. Fatty acids (wool grease-purified lanolin derivatives, fatty acids having 12 to 36 carbon atoms) and the like, but stearic acid, behenic acid, and lanolin fatty acids are preferred. When an ester of the ester compound (A1) and a fatty acid is produced, the carboxyl group equivalent of the fatty acid per 1 molar equivalent of the hydroxyl group of the ester compound (A1) is preferably in the range of 0 to 1. The reaction conditions for esterification are not particularly limited.

[Ester compound (B)]

The ester compound (B) used in the present invention is at least one selected from the group consisting of the ester compound (B1) represented by the general formula (1) and the ester compound (B2) represented by the general formula (2). It is an ester compound.

As shown in the general formula (1), the ester compound (B1) contains (poly) oxyethylene alkyl ether and R ^{1 obtained} by adding m mol of the oxyalkylene group represented by A ¹ O to the monovalent alcohol represented by R ² OH. It is an ether ester having a structure obtained by esterifying a monovalent carboxylic acid represented by COOH.

The alkyl group or alkenyl group represented by R ¹ has ¹ to 24 carbon atoms, preferably 8 to 18 carbon atoms, more preferably 10 to 16 carbon atoms, and refinement is improved when used in combination with the ester compound (A) in this order. do. As carboxylic acid represented by R ¹ COOH, for example, acetic acid, propionic acid, butyric acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid Straight-chain fatty acids such as acid, oleic acid, and behenic acid; Branched fatty acids such as isoooctanoic acid, isodecanoic acid, isododecanoic acid, tridecanoic acid, isopalmitic acid, isostearic acid, etc., in particular lauric acid, myristic acid, palmitic acid, isododecanoic acid, Tridecanoic acid is preferred.

The monovalent alcohol represented by R ² OH may be saturated or unsaturated, or may be straight chain or branched in the case of an aliphatic alcohol. Moreover, in the case of aromatic alcohol, the alkyl group in the aryl group may be straight chain or branched. Among these, it is preferable that the monovalent alcohol represented by R ² OH is a branched aliphatic alcohol in which R ² is a branched alkyl group from the viewpoint of further refinement improvement. The alkyl group, alkenyl group or aryl group represented by R ² has 1 to 24 carbon atoms, preferably 8 to 18 carbon atoms, and more preferably 10 to 16 carbon atoms. In this order, when used together with the ester compound (A), the refining property is improved.

Examples of the alcohol represented by R ² OH include methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, decanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, etc. Straight-chain aliphatic alcohol; branched aliphatic alcohols such as tert-butyl alcohol, isooctyl alcohol, isodecanol, isododecyl alcohol, isotridecyl alcohol, isocetyl alcohol, isostearyl alcohol; Aromatic alcohols such as phenol, benzyl alcohol, octylphenol, nonylphenol, decylphenol, and isononyl alcohol; And the like. Among these, lauryl alcohol, myristyl alcohol, cetyl alcohol, isododecyl alcohol, isotridecyl alcohol, and isotetyl alcohol are preferable.

The order of addition of ethylene oxide, propylene oxide and butylene oxide to be added to the oxyalkylene group represented by (A ¹ O) _m added to the monohydric alcohol represented by R ² OH may be arbitrary, and further forms It may be either a block addition, a random addition, or a combination of a block addition and a random addition, and is not particularly limited.

The (A ¹ O) _m is preferably 2 to 4 carbon atoms and contains an oxypropylene group because it improves refining properties when used in combination with an ester compound (A). Further, the proportion of the oxypropylene group occupied by the (A ¹ O) _m is preferably 20 to 80 mol%, more preferably 30 to 60 mol%. Refinement is improved in this order. m represents the average added mole number of A ¹ O. m is 1-50, 3-30 are more preferable, and 5-20 are more preferable in order to improve refining property. If m exceeds 50, there is a possibility that the performance of reducing fluff or fibrillation is reduced. If m is less than 1, no refining property is exhibited.

The ester compound (B2) was obtained by adding n moles of the oxyalkylene group represented by A ² O to the monovalent alcohol represented by R ³ OH, as represented by the general formula (2), (poly) oxyalkylene alkyl ether. Further, it is an ether ester having a structure obtained by ester-reacting (poly) oxyalkylene alkyl ether acetic acid obtained by oxidation with a monohydric alcohol represented by R ⁴ OH.

The monovalent alcohol represented by R ³ OH may be saturated or unsaturated, or may be straight chain or branched. The alkyl group or alkenyl group represented by R ⁴ has 1 to 24 carbon atoms, preferably 8 to 18 carbon atoms, and more preferably 10 to 16 carbon atoms. In this order, when used together with the ester compound (A), the refining property is improved. Examples of the alcohol represented by R ³ OH include methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, decanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, etc. Examples include lauryl alcohol, myristyl alcohol, and cetyl alcohol.

The order of addition of ethylene oxide, propylene oxide and butylene oxide added to (poly) oxyalkylene alkyl ether obtained by adding n moles of the oxyalkylene group represented by A ² O to the monovalent alcohol represented by R ³ OH May be arbitrary, and the addition form may be any of a block addition, a random addition, and a combination of a block addition and a random addition, and is not particularly limited.

The (A ² O) _n is preferably 2 to 4 carbon atoms, and containing an oxypropylene group is preferable because refining properties are improved when used in combination with the ester compound (A). Moreover, the proportion of the oxypropylene group occupied by the (A ² O) _n is preferably 20 to 80 mol%, and more preferably 30 to 60 mol%. Refinement is improved in this order. n represents the average added mole number of A ² O. n is 1-50, 3-30 are more preferable, and 5-20 are more preferable in order to improve refinement. When n exceeds 50, there is a possibility that the performance of reducing fluff or fibrillation is reduced. If n is less than 1, no refining property is exhibited.

(Poly) oxyalkylene alkyl ether acetic acid is obtained by oxidizing (poly) oxyalkylene alkyl ether, but the method is not particularly limited, and a known method can be used. For example, it is described in Japanese Patent Laid-Open No. 62-198641.

The monovalent alcohol represented by R ⁴ OH may be saturated or unsaturated, or may be straight chain or branched in the case of an aliphatic alcohol. Moreover, in the case of aromatic alcohol, the alkyl group in the aryl group may be straight chain or branched. The alkyl group, alkenyl group or aryl group represented by R ⁴ has 1 to 24 carbon atoms, preferably 8 to 18 carbon atoms, and more preferably 10 to 16 carbon atoms. In this order, when used together with the ester compound (A), the refining property is improved. Examples of the alcohol represented by R ⁴ OH include methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, decanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, Examples include phenol, benzyl alcohol, tert-butyl alcohol, octylphenol, nonylphenol, and decylphenol, and lauryl alcohol, myristyl alcohol, and cetyl alcohol are preferred.

[Organic sulfonate (C)]

The organic sulfonate salt (C) used in the present invention further improves the performance and refining property of reducing fluff or fibrillation by using in combination with the ester compound (A) and the ester compound (B), and antistatic properties when weaving. It is an ingredient that improves. Examples of the organic sulfonate (C) include alkylsulfonate ester salts having 8 to 18 carbon atoms, such as octyl sulfonate, decyl sulfonate, lauryl sulfonate, myristyl sulfonate, cetyl sulfonate, and stearylsulfonate, and octylbenzene. And alkylbenzenesulfonic acid ester salts having an alkyl group having 8 to 12 carbon atoms such as sulfonate and dodecylbenzenesulfonate.

Among these, alkylsulfonic acid ester salts having 12 to 18 carbon atoms and alkylbenzenesulfonic acid ester salts having an alkyl group having 8 to 12 carbon atoms are preferable. The organic sulfonate (C) may be used alone or in combination of two or more. Examples of salts of organic sulfonic acids include potassium salts, sodium salts, monoethanolamine salts, diethanolamine salts, triethanolamine salts, and ammonium salts. Among them, sodium salts are preferred because they have good antistatic properties during weaving. Do.

[Other ingredients]

The treating agent for synthetic fiber filaments of the present invention is a polyoxyalkylene adduct (D) of an ester of a polyhydric alcohol and an aliphatic monovalent carboxylic acid (hereinafter sometimes referred to as POA polyhydric alcohol fatty acid ester (D)), poly Since at least one kind selected from the group consisting of oxyalkylene aliphatic alcohol ether (E) and polyoxyalkylene aromatic alcohol ether (F) improves emulsification property as a treatment agent, refinement properties are further improved. desirable.

POA polyhydric alcohol fatty acid ester (D) is a compound in which an alkylene oxide such as propylene oxide or ethylene oxide is added to an ester having a hydroxyl group in the molecule as an ester of a polyhydric alcohol and an aliphatic monovalent carboxylic acid. As an ester of an aliphatic monovalent carboxylic acid and a polyhydric alcohol, an ester having one or more hydroxyl groups in a molecule means a hydroxyl group of a polyhydric alcohol and one or more hydroxyl groups selected from the group consisting of hydroxyl groups when the aliphatic monovalent carboxylic acid contains a hydroxyl group. It contains the ester.

The POA polyhydric alcohol fatty acid ester (D) is used in combination with the ester compound (A) and the ester compound (B) (and in combination with the organic sulfonate (C) in some cases), thereby improving the emulsifying property as a treatment agent, thereby improving refining properties. Since this is further improved, it is preferable.

Examples of the polyhydric alcohol used in the POA polyhydric alcohol fatty acid ester (D) include, for example, glycerin, trimethylolpropane, pentaerythritol, erythritol, diglycerin, sorbitan, sorbitol, ditrimethylolpropane, dipentaerythritol, And sucrose. Among these, glycerin, trimethylolpropane, pentaerythritol, and sorbitan are preferred as the polyhydric alcohol from the viewpoint of improving emulsifying property as a treatment agent, and glycerin and sorbitan are more preferable.

As the aliphatic monovalent carboxylic acid used in the POA polyhydric alcohol fatty acid ester (D), for example, acetic acid, propionic acid, butyric acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, lauric acid, Myristic acid, palmitic acid, stearic acid, oleic acid, behenic acid, ricinoleic acid, linolenic acid, ricinelaidic acid, hydroxystearic acid, cerebric acid, hydroxylignoseric acid, and the like. From the viewpoint of improving the emulsifying property as a treatment agent, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, ricinoleic acid, ricinelliidic acid, and cerebric acid are preferred, and oleic acid, linolenic acid and ricinoleic acid are more preferred. desirable.

As the added molar number of the polyoxyalkylene of the POA polyhydric alcohol fatty acid ester (D), from the viewpoint of improving the emulsifying property as a treatment agent, 1 to 50 are preferable, 5 to 35 are more preferable, and 10 to 30 are more preferable. And 15 to 25 are particularly preferred. The molecular weight of the POA polyhydric alcohol fatty acid ester (D) is preferably 1000 to 3000, more preferably 1200 to 2800, and even more preferably 1500 to 2500.

The polyoxyalkylene aliphatic alcohol ether (E) is obtained by adding an alkylene oxide such as propylene oxide or ethylene oxide to the aliphatic monohydric alcohol. Polyoxyalkylene aliphatic alcohol ether (E) is preferable because the refining property is further improved by improving the emulsifying property as a treatment agent. A polyoxyalkylene aliphatic alcohol ether (from the viewpoint of improving emulsifying property as a treatment agent by using together with the ester compound (A) and the ester compound (B) of the essential component (and optionally with an alkyl sulfonate (C)) It is preferable that the aliphatic monohydric alcohol used for E) has 11 to 18 carbon atoms. Examples of the polyoxyalkylene aliphatic alcohol ether include alkylene oxide adducts of aliphatic alcohols such as lauryl alcohol, tridecyl alcohol, myristyl alcohol, stearyl alcohol, isostearyl alcohol, and oleyl alcohol. Among these, alkylene oxide adducts of lauryl alcohol, tridecyl alcohol, myristyl alcohol, and stearyl alcohol are preferable. As the number of added moles of the alkylene oxide, 2 to 50 moles are preferable, 4 to 40 moles are more preferable, and 6 to 30 moles are still more preferable.

The polyoxyalkylene aromatic alcohol ether (F) is obtained by adding an alkylene oxide such as propylene oxide or ethylene oxide to the aromatic monohydric alcohol. Polyoxyalkylene aromatic alcohol ether (F) is preferable because the refining property is further improved by improving the emulsifying property as a treatment agent. In combination with the ester compound (A) and the ester compound (B) of the essential component (and in combination with the alkyl sulfonate (C) in some cases), the aromatic monohydric alcohol has 6 carbon atoms from the viewpoint of improving emulsification as a treatment agent. It is preferable that it is -18, 8-16 are more preferable, and 9-15 are more preferable. Examples of the polyoxyalkylene aromatic alcohol ether include phenol, benzyl alcohol, octylphenol, nonylphenol, and decylphenol. As the number of added moles of the alkylene oxide, 2 to 50 moles are preferable, 4 to 40 moles are more preferable, and 6 to 30 moles are still more preferable.

[Processing agent for synthetic fiber filaments]

The treatment agent for synthetic fiber filaments of the present invention comprises an ester compound (A) in which the weight ratio (A / B) of the ester compound (A) and the ester compound (B) is in the range of 0.01 to 3.0, and also accounts for the nonvolatile content of the treatment agent. When the total weight of the ester compound (B) is used under conditions of 40% by weight or more, it is excellent in performance and refining property for reducing fluff or fibrillation. When the total weight of the ester compound (A) and the ester compound (B) in the nonvolatile matter of the treatment agent is less than 40% by weight, the refining property is insufficient. The lower the weight ratio (A / B), the better the refining property, so 0.01 to 1.0 is preferable. Moreover, 0.03 to 0.8 are more preferable, and 0.1 to 0.5 are more preferable to further satisfy the performance and the refining property of reducing fluff or fibrillation at the same time. If it is less than 0.01, the performance of reducing fluff or fibrillation is lowered, and if it is more than 3.0, refining is insufficient. 45 to 95% by weight is preferable, and 50 to 90% by weight is more preferable because the concentration of the total weight occupied by the nonvolatile matter of the treating agent of the ester compound (A) and the ester compound (B) increases as the concentration increases. Preferably, 55 to 85% by weight is more preferable.

In addition, the non-volatile matter in the present invention refers to a dry component when the treating agent is heat-treated at 105 ° C to remove solvents and the like, and reaches a constant weight.

When the treatment agent of the present invention contains an organic sulfonate (C), the weight ratio of the nonvolatile matter of the treatment agent is preferably 0.1 to 10% by weight, more preferably 1 to 8% by weight, and 1.5 to 5% by weight Is more preferred. If it is less than 0.1% by weight, even when used in combination with the ester compound (A) and the ester compound (B), there is a possibility that an improvement in the performance of reducing fluff or fibrillation may not be obtained, and when it exceeds 10% by weight, the ester compound ( There is a possibility that the performance of reducing fluff or fibrillation by A) and the ester compound (B) decreases.

When the treatment agent of the present invention contains a polyoxyalkylene adduct (D) of an ester of a polyhydric alcohol and an aliphatic monovalent carboxylic acid, the weight ratio of the nonvolatile matter of the treatment agent is preferably 1 to 30% by weight, 3 to 28% by weight is more preferable, and 5 to 25% by weight is more preferable. If it is less than 1% by weight, even when used in combination with the ester compound (A) and the ester compound (B), there is a possibility that an improvement in emulsification property may not be obtained, and when it exceeds 30% by weight, the ester compound (A) and the ester compound (B) Even if it is used in combination, there is a possibility that the refining property may decrease.

When the treating agent of the present invention contains polyoxyalkylene aliphatic alcohol ether (E), the weight ratio of the nonvolatile matter in the treating agent is preferably 1 to 30% by weight, more preferably 3 to 28% by weight, 5 -25 weight% is more preferable. When it is less than 1% by weight, even when used in combination with the ester compound (A) and the ester compound (B), there is a possibility that an improvement in emulsification property may not be obtained, and when it exceeds 30% by weight, the ester compound (A) and the ester compound (B) Even when used in combination, there is a possibility that the performance of reducing fluff or fibrillation is reduced.

When the treatment agent of the present invention contains a polyoxyalkylene aromatic alcohol ether (F), the weight ratio of the non-volatile content of the treatment agent is preferably 1 to 30% by weight, more preferably 3 to 28% by weight, and 5 -25 weight% is more preferable. If it is less than 1% by weight, even when used in combination with the ester compound (A) and the ester compound (B), there is a possibility that an improvement in emulsification property may not be obtained, and when it exceeds 30% by weight, the ester compound (A) and the ester compound (B) Even when used in combination, there is a possibility that the performance of reducing fluff or fibrillation is reduced.

In addition, the treatment agent of the present invention, as long as the effects of the present invention are not impaired, as components other than the above-described components, antioxidants, PH adjusting agents, antistatic agents, viscosity stabilizers, extreme pressure agents, etc. It may contain a modulator of. It is preferable that the weight ratio of these regulators in the nonvolatile matter of the treatment agent is 10% by weight or less. When it exceeds 10% by weight, even when used in combination with the ester compound (A) and the ester compound (B), there is a possibility that the performance of reducing fluff or fibrillation is reduced.

The treating agent for synthetic fiber filaments of the present invention may be composed of the above-mentioned components composed of only non-volatile components, may contain water, may be diluted with the above-mentioned non-volatile components with a low-viscosity mineral oil, or non-volatile components in water. It may be an aqueous emulsion emulsifying. When considering oil supply under an atmosphere of 100 ° C. or higher, it is preferable that the treating agent for synthetic fiber filaments of the present invention is non-aqueous. That is, it is preferable to consist of only non-volatile components or to dilute the non-volatile components with a low-viscosity mineral oil.

As for the method for producing the treating agent for synthetic fiber filaments of the present invention, a known method can be adopted without particular limitation. The treatment agent is usually produced by adding and mixing each of the above-described components in any order.

[Synthetic fiber filament and manufacturing method thereof]

The synthetic fiber filament of the present invention is provided with a treating agent for the synthetic fiber filament of the present invention with respect to the raw synthetic fiber filament. Moreover, the manufacturing method of the synthetic fiber filament of this invention contains the process of providing the processing agent for synthetic fiber filaments of this invention with respect to a raw material synthetic fiber filament. Hereinafter, the synthetic fiber filament of the present invention and its manufacturing method will be described in detail.

The amount of the synthetic fiber treatment agent to be added is preferably 0.3 to 2% by weight, more preferably 0.4 to 1.5% by weight, and even more preferably 0.5 to 1.0% by weight relative to the raw synthetic fiber filament.

The place where the raw material synthetic fiber filament is provided with the treating agent for synthetic fiber filaments of the present invention is not particularly limited, and a known method can be employed. Usually, it is provided before the spinning step, the stretching step, the winding step, or the rewinding step of the synthetic fiber filament, but it is preferably provided before or during the winding step that is not limited by the passability of the stretching step.

The method for imparting the treating agent for synthetic fiber filaments of the present invention to a raw material synthetic fiber filament is not particularly limited, and a known method can be adopted. Jet nozzle oiling device, roller oiling device, guide oiling device, or dipping-nip, treatment agent, warming agent, treatment agent diluted with non-volatile matter with low-viscosity mineral oil, or water-based emulsion treatment agent emulsifying non-volatile matter in water (nip) A method using a refueling device and the like can be exemplified.

As raw material synthetic fiber filaments that impart the synthetic fiber filament treatment agent of the present invention, polyester fibers, nylon 6,6 fibers, nylon 6 fibers, wholly aromatic polyamide fibers, wholly aromatic polyester fibers, wholly aromatic copolyamide fibers, and polyethylene And fibers and polybenzazole fibers. Among these, it is preferable to impart a treating agent to the raw material synthetic fiber filaments having a clinic level of 18 cN / dtex or more, because the elongation is low, and fluff tends to be generated, and the effect of reducing the fluff by the treating agent is large. As the strength of the raw material synthetic fiber filament, 18.2 to 35 cN / dtex is more preferable, and 18.5 to 30 cN / dtex is more preferable.

As a specifically preferred raw material synthetic fiber, for the reason that the effect of reducing the fluff and fibrillation by the treatment agent is large, the wholly aromatic polyamide fiber, wholly aromatic polyester fiber, and wholly aromatic copolyamide fiber are preferable, and among them, wholly aromatic poly Amide fibers are particularly preferred because of their large effect of reducing fluff and fibrillation by the treatment agent. In addition, the strength (cN / dtex) of the synthetic fiber was measured according to JIS-L-1013 (gathering interval: 20 cm, tensile speed: 100% of the picking interval per minute).

The raw material synthetic fiber filament itself is known. The method for producing the raw material synthetic fiber (spinning method) is not particularly limited, and a known technique and method can be employed. For example, there are methods such as liquid crystal spinning, dry spinning, wet spinning, semi-dry wet spinning, melt spinning, and gel spinning. Normally, the polyester raw material fiber, nylon 6, 6 raw material fiber, and nylon 6 raw material fiber are obtained by melt spinning, and the wholly aromatic polyester raw material synthetic fiber, wholly aromatic polyamide raw material fiber, and the polybenzazole raw material fiber are obtained by liquid crystal spinning. Obtained, and the wholly aromatic copolyamide raw fiber is obtained by semi-dry wet spinning.

The all-aromatic polyester raw material fiber used in the present invention is a fiber having at least one divalent aromatic group that may be substituted, and any fiber having at least one ester bond may be used, and is particularly limited in the present invention. Does not work. The all-aromatic polyester fiber may be any known fiber called an all-aromatic polyester fiber, for example, a self-condensing polymer of parahydroxybenzoic acid, polyester composed of terephthalic acid and hydroquinone, or 6- with parahydroxybenzoic acid. And polyester fibers made of hydroxy-2-naphthoic acid. It is also possible to use such a wholly aromatic polyester fiber produced by a known method or a method similar thereto.

The wholly aromatic polyamide fiber used in the present invention is a fiber composed of wholly aromatic polyamide such as aromatic dicarboxylic acid / aromatic diamine, aromatic amino carboxylic acid, for example, polyparaphenylene terephthalamide, polyparaaminobenz And amide, polyparaaminobenzhydrazide terephthalate, polyterephthalic acid hydrazide, and polymethphenylene isophthalamide. It is also possible to use such a wholly aromatic polyamide fiber produced by a known method or a method similar thereto.

Polybenzazole fiber (PBZ) refers to a fiber composed of polybenzoxazole (PBO) or polybenzthiazole (PBT) or a random or block copolymer thereof.

[bubble]

The foam of the present invention is a woven synthetic fiber filament provided with the treating agent for synthetic fiber filaments of the present invention. It does not specifically limit as a weaving method, A well-known process and method can be employ | adopted. Examples include weaving by water jet rooms, rapier looms, air jet rooms, and weaving by Sulzer looms.

In the method of manufacturing air bubbles woven by a rapier loom, an air jet room, or a Schulzer loom, a refining process is usually required to weave synthetic fiber filaments and then remove spinning oil or weaving oil. It does not specifically limit as a refinement process, A well-known method can be employ | adopted. For example, impregnating into a bath containing 20 to 90 ° C. refining agent, further impregnating in a bath with 20 to 90 ° C., squeezing into a mangle, and then drying at 80 to 150 ° C. do. In the method of manufacturing air bubbles woven by a water jet room, since most of the treating agent is removed by water pressure during weaving, the refining process is omitted.

Thereafter, in order to impart performances such as water repellency, hydrophilicity or airtightness to the bubbles, a resin emulsion is applied according to each purpose. Examples of the resin emulsion include a fluororesin emulsion, a silicone resin emulsion, an acrylic resin emulsion, a water-repellent polyurethane resin emulsion, a hydrophilic polyurethane resin, or an ethylene-vinyl acetate copolymer resin emulsion. The method for imparting these resins to the bubbles is not particularly limited, and a known process and method can be employed. For example, a knife coat method or an immersion method can be adopted. The form to be imparted is preferable because, when applied in a state such as an aqueous emulsion in which various solvents or resins in which the resin is dissolved are emulsified, uniform adhesion is improved.

Since the foam of the present invention is woven synthetic fiber filaments provided with the treating agent for synthetic fiber filaments of the present invention, it is of high quality because there is little fluff or fibrillation, and there is no unevenness on the surface irregularities, so that the coating of the resin is uniformly Is done. In addition, since the foam of the present invention has good refining properties, the uniform coating property of the resin by the remaining treatment agent is not impaired, and the resin is coated uniformly. Therefore, the air bubbles obtained by coating the air bubbles of the present invention with a fluororesin emulsion, a silicone resin emulsion or a water repellent polyurethane resin are excellent in water repellency and airtightness.

Example

Hereinafter, the present invention will be specifically described by way of Examples, but is not limited to the Examples described herein. In addition, "%" in the following Examples means "% by weight".

(Examples 1 to 53, Comparative Examples 1 to 18)

Each component of the following (A1-1 to G-12) was mixed at a ratio shown in Tables 1 to 8 and stirred to prepare a nonvolatile content of the treating agent for synthetic fiber filaments in each of Examples and Comparative Examples. The non-volatile matter and the paraffin oil having 12 carbon atoms were mixed at a weight ratio of 1: 1 to prepare a treatment agent for synthetic fiber filaments.

In the following, POE represents polyethylene oxide and POP represents polypropylene oxide.

A1-1 POE (30) hardened castor oil-maleate

A1-2 POE (20) Castor oil-adipate

A2-1 POE (20) Ester sealed with 1 molar equivalent of stearic acid per 1 molar equivalent of hydroxyl group of maleic acid condensate of hardened castor oil

A2-2 POP (8) / POE (12) Ester sealed with 1 molar equivalent of stearic acid per 1 molar equivalent of hydroxyl group of maleic acid condensate of hardened castor oil

A2-3 POP (4) / POE (26) Ester blocked with 1 equivalent of lauric acid per 1 equivalent of hydroxyl group of maleic acid condensate of castor oil

A2-4 POE (20) Esters sealed with 1 molar equivalent of stearic acid per 1 molar equivalent of hydroxyl group of adipic acid condensate of hardened castor oil

B1-1 POP (3) / POE (7) lauryl ether laurate

B1-2 POP (3) / POE (2) Cetyl ether palmitate

B1-3 POP (16) / POE (4) decyl ether decanoate

B1-4 POE (10) lauryl ether laurate

B1-5 POP (12) lauryl ether laurate

B1-6 POP (32) / POE (8) decyl ether decanoate

B1-7 POP (3) / POE (7) nonylphenyl ether laurate

B1-8 POP (3) / POE (7) isododecyl ether laurate

B1-9 POP (3) / POE (7) 1-dodecyl ether isododecanoate

B1-10 POP (3) / POE (7) isododecyl ether isododecanoate

B2-1 POP (3) / POE (7) lauryl ether acetic acid laurate

B2-2 POP (7) / POE (3) myristyl ether acetic acid laurate

C-1 Alkanesulfonate Na Salt (C13 ~ 16)

C-2 dodecylbenzenesulfonic acid Na salt

D-1 POE (20) hardened castor oil ether

D-2 POE (20) sorbitan monooleate

E-1 POP (15) / POE (12) stearyl ether

E-2 POE (10) oleyl alcohol

E-3 POP (5) / POE (3) C12, 13 alcohol

F-1 POE (10) nonylphenyl ether

G-1 oleyl phosphate K salt

G-2 POE (3) lauryl alcohol phosphate K salt

G-3 POE (3) lauryl alcohol sulfonate Na salt

G-4 diisostearyl adipate

G-5 isopentacosylate

G-6 oleyl oleate

G-7 POP (10) / POE (50) myristyl ether laurate

G-8 diPOE (3) isostearyl alcoholthiodipropionic acid ester

G-9 diPOE (2) octyl alcohol adipate

G-10 lauryl laurate

G-11 bis [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionic acid] [ethylenebis (oxyethylene)]

G-12 POE (15) oleyl amino ether

Next, using a raw aromatic polyamide filament fiber of 1670 dtex, 1000 filaments (1670 dtex / 1000 f, strength of 21 cN / dtex), which has been previously degreased and has no treatment agent attached, is dyed. A treatment agent-giving yarn to which the treatment agent was applied was prepared so that the amount of non-volatile matter attached to the treatment agent was 0.9% by weight and 1.5% by weight, and provided for each evaluation below.

[Lint evaluation]

A surrogate evaluation of the performance of reducing fluff and fibrillation in the weaving process was performed by measuring the yarn giving treatment agent with a yarn-seal rubbing test.

Seal-to-seal rubbing test (F / F rubbing)

In the YSS-type yarn friction tester, which is a device schematically shown in Fig. 1, under a measurement condition of a cross angle θ = 60 °, a twist angle of 1080 °, and a load of 300 g, a stroke of 60 mm, one round trip (1 time), at a rate of 100 cycles / minute, the yarns are rubbed until the thread is cut, and the number of times until it is cut (= afterwards referred to as the number of times) is measured. It was evaluated as. It was judged that the more the number of endurances, the better the ability to reduce fluff and fibrillation.

Indicator of judgment of fluff evaluation (duration number (times))

◎: more than 1000 times

○: 601 to 1000 times

△: 201 to 600 times

×: 200 times or less

[Evaluation of refinement]

Substitute evaluation of the refining property of the air bubbles was carried out by a method of measuring the residual oil content after refining the treatment agent giving yarn. The smaller the residual oil content, the better the refining properties were judged to be.

<Residual oil content>

The processing agent imparted yarn was passed through the following refining liquid at 60 ° C for 10 seconds at a real speed (10 m / min.), Successively passed through hot water at 60 ° C for 10 seconds, and subsequently passed through a dryer at 105 ° C for refining. I got four. 300 g of the obtained refining yarn was weighed and taken, and the weight (S) after standing in a hot air dryer at 105 ° C. for 90 minutes was measured by electronic balance and placed in a large Soxhlet's extractor. Next, after adding about 2 liters of cyclohexane, and heating and refluxing for about 4 hours, cyclohexane was recovered, the dry weight (M) of the extract was measured, and the amount of residual oil was obtained from the following formula.

Residual oil content (% by weight) = M ÷ (S-M) × 100

Refining solution: Mapon NP-10 (Matsumoto Oil and Fats Co., Ltd.) 0.5 g / L

Index of determination of refinement (residual oil content (% by weight), residual oil content in the table (%) indicates weight%)

◎ (very good): less than 0.1%

○ (Good): 0.1% or more but less than 0.2%

△ (poor): 0.2% or more but less than 0.5%

× (very bad): 0.5% or more

[Water repellency evaluation]

The substitution evaluation of the uniform coating property of the resin against the air bubbles was performed by a method of treating the water after the refining with a water-repellent agent, obtaining a water-repellent agent, and evaluating the water-repellent property of the water-repellent agent.

To the refiner, by jet refueling method, water repellent treatment agent (manufactured by Matsumoto Oil & Chemicals Co., Ltd., M guard PF-10) was given to the water repellent treatment agent for sand so as to be 0.3% by weight as a non-volatile content, and then at 105 ° C. After drying for 2 hours, a water-repellent yarn was obtained. This water-repellent treatment agent was subjected to the suck-up evaluation shown in Fig. 2, and the height at which water was sucked up for 24 hours (hereinafter referred to as the suck-up length) (mm) was measured after being immersed in water at 20 ° C. . It was judged that the shorter the lifting length, the better the water repellency, i.e., the uniform coating property of the resin bubbles.

Indicator of water repellency judgment (wash length (㎜))

◎ (very good): less than 20 mm

○ (Good): 20 mm or more and less than 30 mm

△ (poor): 30 mm or more and less than 50 mm

× (very poor): 50 mm or more

[Table 1]

[Table 2]

[Table 3]

[Table 4]

[Table 5]

[Table 6]

[Table 7]

[Table 8]

As can be seen from Tables 1 to 8, the refinement evaluation result and the water repellency evaluation result are correlated. In addition, the synthetic fiber filaments to which the synthetic fiber filament treatment agents of Examples 1 to 53 were applied have good fluff evaluation, refinement evaluation, and water repellency evaluation. Therefore, it is possible to achieve both a fluff and fibrillation reduction performance and refinement.

On the other hand, in Comparative Examples 1 to 18, when the weight ratio of the total of the ester compound (A) and the ester compound (B) in the nonvolatile matter of the treatment agent is less than 40%, the weight ratio of the ester compound (A) and the ester compound (B) ( When A / B) is not in the range of 0.01 to 3.0 and when there is no (poly) oxyalkylene group in the molecule of the ester compound (B), compared to the examples, either fluff or fibrillation reduction performance and refining property are obtained. One is falling behind.

[Industrial availability]

The treating agent for synthetic fiber filaments of the present invention is excellent in resin processability, and is applied to industrial synthetic fibers such as nylon, polyester, and aromatic polyamide fibers by being excellent in lint and fibrillation reduction performance and refining properties.

1: Treatment agent grant company
2: Load
3: water repellent
4: Beaker
5: load
6: water

Claims (11)

A polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester and a dicarboxylic acid or dicarboxylic acid derivative condensate ester compound (A1) and at least one hydroxyl group among the condensates containing fatty acid (A2) ) At least one ester compound selected from the group consisting of (A); And
Ester compound (B1) represented by the following general formula (1) and at least one ester compound (B) selected from the group consisting of the ester compound (B2) represented by the following general formula (2)
As a treatment agent containing essentially,
The weight ratio (A / B) of the ester compound (A) and the ester compound (B) is 0.01 to 3.0,
The treatment agent for synthetic fiber filaments in which the weight ratio of the sum of the ester compound (A) and the ester compound (B) in the nonvolatile matter of the treatment agent is 40% by weight or more:
[Formula 1]

(In the formula (1), R ¹ represents an alkyl group or an alkenyl group having 1 to 24 carbon atoms, R ² represents an alkyl group, an alkenyl group or an aryl group having 1 to 24 carbon atoms, and A ¹ O represents 2 to 4 carbon atoms. Represents an oxyalkylene group, m represents a number from 1 to 50)
[Formula 2]

(In the formula (2), R ³ represents an alkyl group or an alkenyl group having 1 to 24 carbon atoms, R ⁴ represents an alkyl group, an alkenyl group or an aryl group having 1 to 24 carbon atoms, and A ² O represents ^{2 to} 4 carbon atoms. Represents an oxyalkylene group, and n represents a number from 1 to 50). According to claim 1,
The processing agent whose weight ratio (A / B) is 0.01 to 1.0. According to claim 1,
The said (A ¹ O) _m contains an oxypropylene group, and the said (A ² O) _n contains an oxypropylene group. According to claim 1,
A treatment agent wherein the proportion of oxypropylene groups in (A ¹ O) _m is 20 to 80 mol%, and the proportion of oxypropylene groups in (A ² O) _n is 20 to 80 mol%. According to claim 1,
Further comprising an organic sulfonate (C), the weight ratio of the total of the ester compound (A) and the ester compound (B) in the nonvolatile matter of the treatment agent is 40 to 95% by weight, The treatment agent whose sulfonate salt (C) has a weight ratio of 0.1 to 10% by weight. A synthetic fiber filament in which the treating agent according to any one of claims 1 to 5 is added to a raw material synthetic fiber filament yarn. The method of claim 6,
Synthetic fiber filament, wherein the raw material synthetic fiber filament yarn has a strength of 18 cN / dtex or more. The method of claim 6,
Synthetic fiber filaments wherein the raw material synthetic fiber filament yarn is at least one member selected from the group consisting of wholly aromatic polyester fibers, wholly aromatic polyamide fibers, and wholly aromatic copolyamide fibers. A method for producing a synthetic fiber filament, comprising the step of applying the treating agent according to any one of claims 1 to 5 to a raw material synthetic fiber filament yarn. A bubble obtained by weaving the synthetic fiber filament according to claim 6. A base fabric on which synthetic fiber filaments obtained by the production method according to claim 9 are woven.

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