JP5668170B1 - Treatment agent for synthetic fibers and use thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treating agent for synthetic fiber which is used when producing a synthetic fiber, can reduce roll dirt and has excellent heat resistance. The present invention is a treating agent for synthetic fibers comprising a smoothing component (A) and an organic sulfonic acid compound (B) represented by the following general formula (1), which is treated by an ion chromatography method. The weight ratio of sulfate ion (SO42-) detected from the nonvolatile content of the agent is 300 ppm or less, and the weight ratio of chlorine ion (Cl-) is 300 ppm or less. (In the formula (1), a and b are integers of 0 or more and a + b = 5 to 17 and M is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group. Yes.) [Selection figure] None

Description

  The present invention relates to a treatment agent for synthetic fibers and use thereof. More specifically, the present invention relates to a synthetic fiber treating agent used in the production of synthetic fibers, a method for producing a synthetic fiber filament yarn using the treating agent, and a fiber structure including the synthetic fiber filament yarn.

Conventionally, a fiber treated with a fiber oil agent is once wound up and subjected to a drawing process. Recently, a method of shortening this process and directly applying oiling yarn to a drawing process has been adopted.
In this method, once trouble such as yarn breakage occurs in the drawing process, a large amount of fiber is lost. Therefore, it is necessary to avoid occurrence of trouble in the drawing process as much as possible. The main cause of trouble is fiber damage such as thread breakage, and in order to prevent this, a treatment agent for synthetic fibers having excellent lubricity and heat resistance is required.
Furthermore, improved physical properties such as higher fiber strength and lower shrinkage rate, productivity improvement such as other end during production, higher speed, etc., due to roll dirt that has not been a problem until now, There is a problem that fluff and thread breakage increase. For this reason, in order to keep a roll in a clean state, the cleaning interval of a roll is short, the frequency | count of the cleaning increases, and the fall of productivity is pointed out.

In order to solve these problems, Patent Document 1 proposes a treatment agent for synthetic fibers using a phosphate anionic surfactant and a sulfonate anionic surfactant in combination. However, the heat resistance and lubricity are not sufficient to use this treatment agent in the spindle system, and heat-degraded oil component etc. accumulates in the drawing roll and friction increases with time. There was a drawback that caused quality degradation.
Patent Document 1 proposes a treatment agent in which a specific ester and an antioxidant are used in combination with the anionic surfactant. However, even with such a treatment agent, satisfactory heat resistance cannot be obtained under severe spinning conditions.

  Furthermore, in order to solve the above problems, Patent Document 2 uses an ester of a polyhydric alcohol, an ester of a carboxylic acid having a thioether group and an alcohol, a secondary sulfonate, an alkyl phosphate, and a hindered phenol antioxidant. Treatment agents have been proposed. However, this treatment agent is used for fluff and thread breakage caused by roll dirt, which has not been a problem until now due to improvements in productivity such as high strength, low shrinkage, and high speed. Even if it was, it was not improved. Further, when the antioxidant described in Patent Document 2 is used, there is a defect that the fiber is often discolored during storage of the fiber.

  For this reason, since the cleaning interval of a roll becomes short and the frequency | count of the cleaning increases, the processing agent excellent in heat resistance which can suppress reducing a productivity is desired.

JP 59-21680 A JP-A-8-120563

  An object of the present invention is a synthetic fiber treating agent that is used when producing synthetic fibers and can reduce roll stains and has excellent heat resistance, a method for producing a synthetic fiber filament yarn using the treating agent, and the producing method It is providing the fiber structure containing the synthetic fiber filament yarn obtained by.

As a result of intensive studies, the present inventors have found that 1) the raw material containing the organic sulfonic acid compound represented by the general formula (1) contains a large amount of sodium sulfate and sodium chloride, and 2) the treatment agent. The sodium sulfate and sodium chloride contained in the roll rolls off and accumulates on the drawing roll during spinning, causing an increase in yarn breakage, and on rolls that are hot drawn, tar accumulation is accelerated and roll contamination occurs. First of all, I found out that 3) By making sulfate ions (SO ₄ ²⁻ ) and chlorine ions (Cl ⁻ ) detected from the non-volatile content of the treatment agent to a predetermined ratio or less, fluff, yarn breakage, and roll dirt can be dramatically reduced. And reached the present invention.

That is, the synthetic fiber treating agent of the present invention contains a smooth component (A) and an organic sulfonic acid compound (B) represented by the following general formula (1), and is obtained from the non-volatile content of the treating agent by ion chromatography. It is a synthetic fiber treatment agent in which the weight ratio of sulfate ions (SO ₄ ²⁻ ) to be detected is 300 ppm or less and the weight ratio of chloride ions (Cl ⁻ ) is 300 ppm or less.

（式（１）中、ａ及びｂは、０以上の整数であって、ａ＋ｂ＝５〜１７を満たす整数である。Ｍは水素原子、アルカリ金属、アンモニウム基又は有機アミン基である。）

(In the formula (1), a and b are integers of 0 or more and are integers satisfying a + b = 5 to 17. M is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group.)

  It is preferable that the weight ratio of the smoothing component (A) in the treatment agent is 20 to 70% by weight.

  The weight ratio of the organic sulfonic acid compound (B) in the non-volatile content of the treatment agent is preferably 0.5 to 7% by weight.

The treatment agent of the present invention further contains an organic phosphate ester compound (C), and the weight ratio of phosphate ions (PO ₄ ³⁻ ) detected from the non-volatile content of the treatment agent by ion chromatography is 500 ppm or less. It is preferable.

  The weight ratio of the organophosphate compound (C) in the nonvolatile content of the treatment agent is preferably 0.05 to 5% by weight.

  The organophosphate compound (C) is preferably at least one selected from a compound represented by the following general formula (2) and a compound represented by the following general formula (3).

（式（２）中、Ｒ^１は炭素数６〜２４の炭化水素基である。Ａ^１Ｏは炭素数２〜４のオキシアルキレン基であって、ｍは０〜１５の整数である。ｎは１〜２の整数である。Ｍ^１は、水素原子、アルカリ金属、アンモニウム基又は有機アミン基である。）

(In formula (2), ^{R 1} is .A ¹ O is a hydrocarbon group having 6 to 24 carbon atoms an oxyalkylene group having 2 to 4 carbon atoms, m is an integer of 0 to 15 .n Is an integer of ¹ to 2. M ¹ is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group.)

（式（３）中、Ｒ^１は炭素数６〜２４の炭化水素基である。Ａ^１Ｏは炭素数２〜４のオキシアルキレン基であって、ｍは０〜１５の整数である。Ｍ^１は、水素原子、アルカリ金属、アンモニウム基又は有機アミン基である。Ｑ^１は、Ｍ^１又はＲ^１Ｏ(Ａ^１Ｏ)_ｍである。Ｙは１又は２である。）

(In Formula (3), R ¹ is a hydrocarbon group having 6 to 24 carbon atoms. A ¹ O is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 15.) ¹ is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group, Q ¹ is M ¹ or R ¹ O (A ¹ O) _m , and Y is 1 or 2.

  The treatment agent of the present invention preferably further contains a nonionic surfactant (D).

  The weight ratio of the nonionic surfactant (D) in the nonvolatile content of the treatment agent is preferably 20 to 70% by weight.

  The synthetic fiber filament yarn of the present invention is obtained by adding the above-described treatment agent to a raw material synthetic fiber filament yarn.

  The manufacturing method of the synthetic fiber filament yarn of this invention includes the process of providing said processing agent to a raw material synthetic fiber filament yarn.

  The fiber structure of the present invention includes the above synthetic fiber filament yarn and / or the synthetic fiber filament yarn obtained by the above production method.

When the treatment agent for synthetic fibers of the present invention is used, roll stains when producing synthetic fibers can be reduced and heat resistance is excellent. As a result, the cleaning interval between rolls can be increased, the number of cleanings can be reduced, and the productivity of synthetic fibers can be improved.
According to the production method of the present invention, the occurrence of scum and yarn breakage can be reduced, and a synthetic fiber filament yarn excellent in yarn quality can be obtained. The fiber structure of the present invention is excellent in quality.

  The treatment agent for synthetic fibers of the present invention contains a smoothing component (A) and an organic sulfonic acid compound (B) represented by the above general formula (1), and is detected from the non-volatile content of the treatment agent by ion chromatography. Sulfate ions and chloride ions are set to a predetermined concentration or less. Details will be described below.

[Smooth component (A)]
The smooth component (A) is an essential component of the treatment agent of the present invention. As the smooth component (A), 1) an ester compound having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded (A1), and 2) an ester compound having a structure in which an aliphatic polyhydric alcohol and a fatty acid are ester-bonded (A2), 3) an ester compound (A3) having a structure in which an aliphatic monohydric alcohol and an aliphatic polycarboxylic acid are ester-bonded, 4) an aromatic ester compound (A4) having an aromatic ring in the molecule, 5 Examples thereof include known smoothing components generally employed as synthetic fiber treating agents such as sulfur-containing ester compounds (A5) and 6) mineral oil (A6). The smoothing component (A) can use 1 type (s) or 2 or more types.

1) Ester compound (A1)
The ester compound (A1) is a compound having a structure in which an aliphatic monohydric alcohol and a fatty acid (aliphatic monovalent carboxylic acid) are ester-bonded, and is a compound having no polyoxyalkylene group in the molecule. 1 type (s) or 2 or more types can be used for an ester compound (A1).
The ester compound (A1) is preferably a compound represented by the following general formula (4).

（式中、Ｒ^２は炭素数４〜２４のアルキル基又はアルケニル基を示し、Ｒ^３は炭素数６〜２４のアルキル基又はアルケニル基を示す。）

(In the formula, R ² represents an alkyl group or alkenyl group having 4 to 24 carbon atoms, and R ³ represents an alkyl group or alkenyl group having 6 to 24 carbon atoms.)

The number of carbon atoms in R ² is preferably 6 to 22, more preferably 8 to 20, more preferably 10 to 18. When the number of carbon atoms is less than 4, fluff may increase due to the weak oil film. On the other hand, when the number of carbon atoms exceeds 24, friction between fiber metals becomes high, and fluff may increase. R ² may be either an alkyl group or an alkenyl group, but is preferably an alkyl group from the viewpoint of excellent heat resistance.

The number of carbon atoms of R ³ is preferably 6 to 22, more preferably 8 to 20, more preferably 10 to 18. When the number of carbon atoms is less than 6, fluff may increase due to weak oil film. On the other hand, when the number of carbon atoms exceeds 24, friction between fiber metals becomes high, and fluff may increase. R ³ may be either an alkyl group or an alkenyl group, but is preferably an alkenyl group from the viewpoint that oil film strength is high and fluff is less likely to occur.

  Although it does not specifically limit as ester compound (A1), For example, 2-decyl tetradecanoyl erucinate, 2-decyl tetradecanoyl oleate, 2-octyl dodecyl stearate, isooctyl palmitate, isooctyl stearate, Butyl palmitate, butyl stearate, butyl oleate, isooctyl oleate, lauryl oleate, isotridecyl stearate, hexadecyl stearate, isostearyl oleate, oleyl octanoate, oleyl laurate, oleyl palmitate, oleyl stearate Rate, oleyl oleate and the like. Among these, 2-decyltetradecanoyl oleate, 2-octyldodecyl stearate, isooctyl palmitate, isooctyl stearate, lauryl oleate, isotridecyl stearate, hexadecyl stearate, isostearyl oleate, Oleyl oleate is preferred.

  The ester compound (A1) can be synthesized and obtained by a known method using a commercially available fatty acid and an aliphatic monohydric alcohol.

2) Ester compound (A2)
The ester compound (A2) is a compound having a structure in which an aliphatic polyhydric alcohol and a fatty acid (aliphatic monovalent carboxylic acid) are ester-bonded, and is a compound having no polyoxyalkylene group in the molecule. 1 type (s) or 2 or more types can be used for an ester compound (A2).

The aliphatic polyhydric alcohol constituting the ester compound (A2) is not particularly limited as long as it is divalent or higher, and one or two or more types can be used. From the viewpoint of oil film strength, the polyhydric alcohol is preferably trivalent or more, more preferably 3 to 4, more preferably trivalent.
Examples of the aliphatic polyhydric alcohol include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3-butanediol, and 1,4-butanediol. 2-methyl-1,3-propanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, cyclohexanediol, cyclohexanedimethanol, glycerin, trimethylolpropane, pentaerythritol, erythritol, diglycerin Sorbitan, sorbitol, ditrimethylolpropane, dipentaerythritol, triglycerin, tetraglycerin, sucrose and the like. Among these, glycerin, trimethylolpropane, pentaerythritol, erythritol, diglycerin, sorbitan, sorbitol, ditrimethylolpropane, dipentaerythritol, and sucrose are preferable, and glycerin, trimethylolpropane, pentaerythritol, erythritol, diglycerin, sorbitan Are more preferable, and glycerin and trimethylolpropane are more preferable.

  The fatty acid constituting the ester compound (A2) may be saturated or unsaturated. The number of unsaturated bonds is not particularly limited, but when there are three or more, one or two is preferable because deterioration proceeds due to oxidation and the treatment agent is thickened to impair lubricity. The number of carbon atoms of the fatty acid is preferably 8 to 24, more preferably 10 to 20, and still more preferably 12 to 18 in terms of both oil film strength and lubricity. 1 type, or 2 or more types may be used for a fatty acid, and a saturated fatty acid and an unsaturated fatty acid may be used together.

Examples of fatty acids include butyric acid, crotonic acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, isocetyl acid, margarine Acid, stearic acid, isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linolenic acid, tuberculostearic acid, arachidic acid, isoeicosaic acid, gadoleic acid, eicosenoic acid, docosanoic acid, isodocosanoic acid, erucic acid, tetracosane Examples include acids, isotetracosanoic acid, nervonic acid, serotic acid, montanic acid, and melicic acid.
Among these, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, isocetyl acid, margaric acid, stearic acid, isostearic acid, oleic acid, elaidic acid, Vaccenoic acid, linoleic acid, linolenic acid, tuberculostearic acid, arachidic acid, isoeicosaic acid, gadoleic acid, eicosenoic acid, docosanoic acid, isodocosanoic acid, erucic acid, tetracosanoic acid, isotetracosanoic acid, nervonic acid are preferred, capric acid, lauric acid Acid, myristic acid, myristic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, isocetyl acid, margaric acid, stearic acid, isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linoleic acid More preferred are acid, tuberculostearic acid, arachidic acid, isoeicosaic acid, gadoleic acid, eicosenoic acid, lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, isocetylic acid, margaric acid, stearic acid, More preferred are isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid and linolenic acid.

The ester compound (A2) is a compound having two or more ester bonds in the molecule, but is preferably a compound having three or more ester bonds in the molecule, from the viewpoint of yarn production. More preferably, it is a compound having three ester bonds.
There is no limitation in particular about the iodine value of ester compound (A2).

  300-1200 are preferable, as for the weight average molecular weight of an ester compound (A2), 300-1000 are more preferable, and 500-1000 are more preferable. If the weight average molecular weight is less than 300, the oil film strength may be insufficient, and fluff may increase or smoke generation during heat treatment may increase. On the other hand, when the weight average molecular weight exceeds 1200, smoothness is insufficient and fluff frequently occurs, and not only high-quality fibers cannot be obtained, but also the quality in the weaving or knitting process may be inferior. In addition, the weight average molecular weight in the present invention is a separation column KF-402HQ, KF-403HQ manufactured by Showa Denko KK using a high-speed gel permeation chromatography apparatus HLC-8220GPC manufactured by Tosoh Corporation and a sample concentration of 3 mg / cc. And calculated from the peak measured by the differential refractive index detector.

  Examples of the ester compound (A2) include trimethylolpropane tricaprylate, trimethylolpropane tricaprinate, trimethylolpropane trilaurate, trimethylolpropane trioleate, trimethylolpropane (laurate, myristylate, palmitate), trimethylol. Propane (laurate, myristylate, oleate), trimethylolpropane (tripalmyl fatty acid ester), trimethylolpropane (tricoconut fatty acid ester), trimethylolpropane dicaprylate, trimethylolpropane dicaprinate, trimethylolpropane dilaurate, trimethylolpropane Dioleate, trimethylolpropane (laurate, myristylate), trimethylolpropane (laure) Oleate), trimethylolpropane (myristylate, oleate), trimethylolpropane (dipalm fatty acid ester), trimethylolpropane (dicoconut fatty acid ester), coconut oil, rapeseed oil, palm oil, glycerin trilaurate, glycerin trioleate, Glycerin triisostearate, glycerol dioleate, glycerol monolaurate, diglycerol dioleate, sorbitan trioleate, sorbitan (laurate, myristylate, oleate), sorbitan dilaurate, sorbitan monooleate, pentaerythritol tetracaprylate, penta Erythritol tetracaprinate, pentaerythritol tetralaurate, erythritol tetralaurate, pentaerythritol (teto Palm kernel fatty acid esters), pentaerythritol (Tetorayashi fatty acid ester), erythritol trioleate, pentaerythritol dipalmitate, include 1,6-hexanediol di oleate.

  As the ester compound (A2), a compound synthesized by a known method using a commercially available fatty acid and aliphatic polyhydric alcohol may be used. Further, natural esters obtained from nature such as natural fruits, seeds or flowers, and natural esters satisfying the constitution of the ester compound (A2) can be used as they are, or natural esters can be obtained by known methods as necessary. You may refine | purify, and you may use the ester which isolate | separated and refine | purified further refine | purified ester using a melting point difference by a well-known method. Moreover, you may use the ester obtained by transesterifying 2 or more types of natural ester (oil and fat).

3) Ester compound (A3)
The ester compound (A3) is a compound having a structure in which an aliphatic monohydric alcohol and an aliphatic polyvalent carboxylic acid are ester-bonded, and is a compound having no polyoxyalkylene group in the molecule. 1 type (s) or 2 or more types can be used for an ester compound (A3).

  The aliphatic monohydric alcohol constituting the ester compound (A3) is not particularly limited, and one or two or more kinds can be used. The aliphatic monohydric alcohol may be saturated or unsaturated. There is no particular limitation on the number of unsaturated bonds, but when there are two or more, one is preferable because deterioration proceeds due to oxidation and the treatment agent is thickened and lubricity is impaired. As carbon number of aliphatic monohydric alcohol, 8-24 are preferable from a viewpoint of smoothness and oil film strength, 14-24 are more preferable, and 18-22 are more preferable. One or more aliphatic monohydric alcohols may be used, and a saturated aliphatic monohydric alcohol and an unsaturated aliphatic monohydric alcohol may be used in combination.

  Examples of the aliphatic monohydric alcohol include octyl alcohol, isooctyl alcohol, lauryl alcohol, myristyl alcohol, myristol alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, Bacenyl alcohol, gadryl alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol, lignocerinyl alcohol, isotetracosanyl alcohol, nerbonyl alcohol, Examples include serotonyl alcohol, montanyl alcohol, and melinyl alcohol. Among these, octyl alcohol, isooctyl alcohol, lauryl alcohol, myristyl alcohol, myristol alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, vaccenyl alcohol Gadolyl alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol, lignoserinyl alcohol, isotetradocosanyl alcohol, nerbonyl alcohol are preferred, myristolyl Alcohol, palmitoleyl alcohol, oleyl alcohol, elaidyl alcohol, baxenyl alcohol Call, gadoleyl alcohol, eicosyl cell noil alcohol, erucic alkenyl alcohol, more preferably flannel isobornyl alcohol, oleyl alcohol, elaidyl alcohol, Ba habit alkenyl alcohol, gadoleyl alcohol, eicosyl cell noil alcohol, erucic nil alcohol more preferred.

The aliphatic polyvalent carboxylic acid constituting the ester (A3) is not particularly limited as long as it is divalent or higher, and one or two or more types can be used. The aliphatic polyvalent carboxylic acid used in the present invention does not contain a sulfur-containing polyvalent carboxylic acid such as thiodipropionic acid. The valence of the aliphatic polycarboxylic acid is preferably divalent. Similarly, it is preferable that no hydroxyl group is contained in the molecule.
Aliphatic polycarboxylic acids include citric acid, isocitric acid, malic acid, aconitic acid, oxaloacetic acid, oxalosuccinic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelain An acid, sebacic acid, etc. are mentioned. Among these, aconitic acid, oxaloacetic acid, oxalosuccinic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and sebacic acid are preferred, and fumaric acid, maleic acid, adipine Acid, pimelic acid, suberic acid, azelaic acid and sebacic acid are more preferred.

  Examples of the ester compound (A3) include dioctyl adipate, dilauryl adipate, dioleyl adipate, secondary isocetyl adipate, dioctyl sebacate, dilauryl sebacate, dioleyl sebacate, diisocetyl sebacate and the like.

  The ester compound (A3) is a compound having two or more ester bonds in the molecule. There is no limitation in particular about the iodine value of an ester compound (A3).

  500-1000 are preferable, as for the weight average molecular weight of an ester compound (A3), 500-800 are more preferable, and 500-700 are more preferable. When the weight average molecular weight is less than 500, the oil film strength may be insufficient, and fluff may increase or smoke generation during heat treatment may increase. On the other hand, when the weight average molecular weight exceeds 1000, the melting point becomes high, which may cause scum in the weaving or knitting process, and the quality may be inferior.

  The ester compound (A3) can be synthesized and obtained by a known method using a commercially available aliphatic monohydric alcohol and aliphatic polyvalent carboxylic acid.

4) Aromatic ester compound (A4)
The aromatic ester compound (A4) is an ester compound having at least one aromatic ring in the molecule. Specifically, an ester compound (A4-1) having a structure in which an aromatic carboxylic acid and an alcohol are ester-bonded and an ester compound (A4-2) having a structure in which an aromatic alcohol and a carboxylic acid are ester-bonded are mentioned. Can do. The aromatic ester compound (A4) is a compound that does not have a polyoxyalkylene group in the molecule. An aromatic ester compound (A4) can use 1 type (s) or 2 or more types.

The aromatic carboxylic acid constituting the ester compound (A4-1) may be a monocarboxylic acid or a polyvalent carboxylic acid. You may use 1 type, or 2 or more types.
Examples of the aromatic carboxylic acid include benzoic acid, toluic acid, naphthoic acid, phthalic acid, isophthalic acid, terephthalic acid, salicylic acid, gallic acid, melittic acid, cinnamic acid, trimellitic acid, and pyromellitic acid. Among these, trimellitic acid, phthalic acid, isophthalic acid, and terephthalic acid are preferable, and trimellitic acid is more preferable.

  The alcohol constituting the ester compound (A4-1) may be a monohydric alcohol or a polyhydric alcohol. Moreover, any of aliphatic alcohol, alicyclic alcohol, and aromatic alcohol may be sufficient. The monohydric alcohol can use 1 type (s) or 2 or more types. Among these, monohydric alcohols are preferable, and aliphatic monohydric alcohols are more preferable.

Monohydric alcohols include alkylbenzene alcohol, dialkylbenzene alcohol, octyl alcohol, isooctyl alcohol, lauryl alcohol, myristyl alcohol, myristol alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol , Elidyl alcohol, bacenyl alcohol, gadrel alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol, lignocerinyl alcohol, isotetracosanyl alcohol , Nerbonyl alcohol, serotinyl alcohol, montanyl alcohol, melicini Alcohol and the like.
Examples of the polyhydric alcohol include the aliphatic polyhydric alcohol described in the ester compound (A2) and the aromatic polyhydric alcohol described in the ester compound (A4-2).

The aromatic alcohol which comprises ester compound (A4-2) can use 1 type (s) or 2 or more types. As the aromatic alcohol, an aromatic polyhydric alcohol is preferable, and an aromatic trihydric alcohol is more preferable.
Examples of the aromatic alcohol include aromatic monohydric alcohols such as alkylbenzene alcohol, aromatic polyhydric alcohols such as dialkylbenzene alcohol, bisphenol A, bisphenol Z, and 1,3,5-trihydroxymethylbenzene. Among these, bisphenol A, bisphenol Z, and 1,3,5-trihydroxymethylbenzene are preferable, and 1,3,5-trihydroxymethylbenzene is more preferable.

  The carboxylic acid constituting the ester compound (A4-2) may be either an aliphatic carboxylic acid or an aromatic carboxylic acid. Either a monovalent carboxylic acid or a polyvalent carboxylic acid may be used. You may use 1 type, or 2 or more types. Among these, monovalent carboxylic acids are preferable, and fatty acids are more preferable. The fatty acid is preferably saturated from the viewpoint of persistence. The fatty acid may be linear or branched.

Monovalent carboxylic acids include alkylbenzene carboxylic acid, dialkylbenzene carboxylic acid, butyric acid, crotonic acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, myristic acid, Pentadecylic acid, palmitic acid, palmitoleic acid, isocetyl acid, margaric acid, stearic acid, isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linolenic acid, tuberculostearic acid, arachidic acid, isoicosanoic acid, gadoleic acid, Examples include eicosenoic acid, behenic acid, isodocosanoic acid, erucic acid, lignoceric acid, isotetracosanoic acid, nervonic acid, serotic acid, montanic acid, melicic acid and the like.
Examples of the polyvalent carboxylic acid include the aliphatic polyvalent carboxylic acid described in the ester compound (A3) and the aromatic polyvalent carboxylic acid described in the ester compound (A4-1).

5) Sulfur-containing ester compound (A5)
The sulfur-containing ester compound is at least one selected from a diester compound of thiodipropionic acid and an aliphatic alcohol and a monoester compound of thiodipropionic acid and an aliphatic alcohol.
The sulfur-containing ester compound is a component having antioxidant ability. By using the sulfur-containing ester compound, the heat resistance of the treatment agent can be increased. 1 type (s) or 2 or more types can be used for a sulfur-containing ester compound. 400-1000 are preferable, as for the molecular weight of the thiodipropionic acid which comprises this sulfur-containing ester compound, 500-900 are more preferable, and 600-800 are more preferable. The aliphatic alcohol constituting the sulfur-containing ester compound may be saturated or unsaturated. The aliphatic alcohol may be linear or have a branched structure, but preferably has a branched structure. 8-24 are preferable, as for carbon number of an aliphatic alcohol, 12-24 are more preferable, and 16-24 are more preferable. Examples of the aliphatic alcohol include octyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, lauryl alcohol, myristyl alcohol, isocetyl alcohol, oleyl alcohol, and isostearyl alcohol. Among these, oleyl alcohol and isostearyl alcohol are exemplified. preferable.
The sulfur-containing ester compound is a diester compound of thiodipropionic acid and an aliphatic alcohol (in this paragraph, simply referred to as a diester), a monoester compound of thiodipropionic acid and an aliphatic alcohol (in this paragraph, simply referred to as a monoester). ). In this case, the molar ratio of the diester and the monoester is preferably 100/0 to 70/30, more preferably 100/0 to 75/25, and still more preferably 100/0 to 80/20.

6) Mineral oil (A6)
Moreover, the processing agent for synthetic fibers of this invention may contain mineral oil as a smoothing component other than the above. The mineral oil here is not a low-viscosity diluent used for diluting the treatment agent, but is contained in the nonvolatile matter. The mineral oil is not particularly limited, and examples thereof include machine oil, spindle oil, and liquid paraffin. One or more mineral oils may be used. The viscosity of the mineral oil at 30 ° C. is preferably 100 to 500 seconds.

  As the smoothing component (A), from the viewpoint of improving heat resistance, it is preferable to use a product purified by removing the catalyst and the like.

[Organic sulfonic acid compound (B)]
The organic sulfonic acid compound (B) represented by the general formula (1) is an essential component of the treatment agent of the present invention. It contains a smooth component (A) and an organic sulfonic acid compound (B), and the weight ratio of sulfate ion (SO ₄ ²⁻ ) detected from the non-volatile content of the treatment agent by ion chromatography is 300 ppm or less, chloride ion (Cl ^- When the weight ratio of) and 300ppm or less, can be dramatically reduced fuzz, yarn breakage, a roll staining. In some cases, sulfate ion (SO ₄ ²⁻ ) is simply referred to as sulfate ion, and chlorine ion (Cl ⁻ ) is referred to as chlorine ion.
In the general formula (1), a and b are integers of 0 or more, and are integers satisfying a + b = 5 to 17. When a + b is less than 5, the effect of reducing roll contamination is reduced. On the other hand, when a + b is more than 17, the melting point is high, the compatibility with the treatment agent is deteriorated, and it cannot be used. a + b is preferably 7 to 17, and more preferably 10 to 15.

M is a hydrogen atom, an alkali metal, an ammonium group, or an organic amine group. Examples of the alkali metal include lithium, sodium, and potassium. Examples of the ammonium group and the organic amine group include a group represented by NR ^a R ^b R ^c R ^d . R ^a , R ^b , R ^c and R ^d each independently represent a hydrogen atom, an alkyl group, an alkenyl group or a polyoxyalkylene group. 1-24 are preferable, as for carbon number of an alkyl group and an alkenyl group, 1-20 are more preferable, and 1-18 are more preferable. The polyoxyalkylene group is represented by “— (A ¹ O) _m H”, and (A ¹ O) _m is the same as that represented by the general formula (2).

Examples of the group represented by NR ^a R ^b R ^c R ^d include an ammonium group, a methyl ammonium group, an ethyl ammonium group, a propyl ammonium group, a butyl ammonium group, a hexyl ammonium group, an octyl ammonium group, a dimethyl ammonium group, and a diethyl ammonium group. , Dipropyl ammonium group, dibutyl ammonium group, dihexyl ammonium group, dioctyl ammonium group, trimethyl ammonium group, triethyl ammonium group, tripropyl ammonium group, tributyl ammonium group, trihexyl ammonium group, trioctyl ammonium group, tetramethyl ammonium group, Tetraethylammonium group, tetrapropylammonium group, tetrabutylammonium group, tetrahexylammonium group, tetra Octyl ammonium group, ethyl trimethyl ammonium group, propyl trimethyl ammonium group, butyl trimethyl ammonium group, hexyl trimethyl ammonium group, octyl trimethyl ammonium group, methanol ammonium group, ethanol ammonium group, propanol ammonium group, butanol ammonium group, hexanol ammonium group, octanol Ammonium group, dimethanol ammonium group, diethanol ammonium group, dipropanol ammonium group, dibutanol ammonium group, dihexanol ammonium group, dioctanol ammonium group, trimethanol ammonium group, triethanol ammonium group, tripropanol ammonium group, tributanol ammonium Group, trihexanol Monium group, trioctanol ammonium group, (EO6) butyl amino ether group, (EO 6) hexyl amino ether group, (EO 6) octyl amino ether group, (EO 6) decyl amino ether group, (EO 6) lauryl amino ether group, (EO 6 ) Tetradecylaminoether group, (EO6) hexadecylaminoether group, (EO6) oleylaminoether group, (EO6) stearylaminoether group, (EO6) gadrelaminoether group, (EO6) tetracosylaminoether group , (EO10) oleylaminoether group, (EO10) oleylaminoether / erucate, (EO3) laurylaminoether group, (EO3) laurylaminoether group, (EO7) laurylaminoether group, (EO15) olei Amino ether group, (PO3, EO 5) stearyl amino ether group include (PO5, EO3) stearyl amino ether groups.

The raw material containing the organic sulfonic acid compound (B) (hereinafter referred to as raw material X) contains sodium sulfate and / or sodium chloride due to its production method. The ratio of sodium sulfate and sodium chloride contained in the raw material X can be calculated from the weight ratio of sulfate ions and chlorine ions detected from the raw material X by ion chromatography.
When the raw material X contains sodium sulfate, the weight ratio of the sulfate ion detected from the raw material X is 20000 ppm or more with respect to the organic sulfonic acid compound (B). Moreover, when the raw material X contains sodium chloride, the weight ratio of the chlorine ion detected from the raw material X is 20000 ppm or more with respect to the organic sulfonic acid compound (B).
When such a raw material X is used as a treating agent, as described above, sodium sulfate and sodium chloride fall off and accumulate on the drawing roll during spinning, causing an increase in yarn breakage. In addition, sodium sulfate and sodium chloride accelerate tar accumulation and cause roll soiling on the rolls subjected to hot stretching. Examples of such a raw material X include HOSTAPUR SAS (manufactured by Hoechst) and mersolate H (manufactured by Bayer).

From the viewpoint of exerting the effects of the present invention, the treatment agent of the present invention uses a raw material (hereinafter referred to as raw material Y) containing an organic sulfonic acid compound (B) in which sodium sulfate and sodium chloride are reduced from the raw material X. is important. Specifically, the weight ratio of sulfate ions detected from the raw material Y by ion chromatography is 5000 ppm or less with respect to the organic sulfonic acid compound (B), and the weight ratio of chloride ions is the organic sulfonic acid compound ( It is preferable that it is 5000 ppm or less with respect to B).
From the viewpoint of further exerting the effect of the present application, the weight ratio of the sulfate ion detected from the raw material Y is more preferably 4000 ppm or less, further preferably 3000 ppm or less, and particularly preferably 2000 ppm or less with respect to the organic sulfonic acid compound (B). . Similarly, the weight ratio of chlorine ions detected from the raw material Y is more preferably 4000 ppm or less, still more preferably 3000 ppm or less, and particularly preferably 2000 ppm or less with respect to the organic sulfonic acid compound (B).
The method for analyzing sulfate ions and chloride ions by ion chromatography in the present invention is as described in the examples.

  There is no limitation in particular as a method of reducing sodium sulfate and sodium chloride from the raw material X containing an organic sulfonic acid compound (B), A well-known method is employable. For example, when the raw material X contains sodium sulfate, a method such as adding a solvent such as methanol or water to the raw material X and precipitating and separating an inorganic substance such as sodium sulfate may be used. Moreover, when the raw material X contains sodium chloride, the method of removing the sodium chloride contained in the raw material X with an ion exchange membrane, the method of adsorbing with an ion exchange resin, etc. are mentioned.

  The organic sulfonic acid compound (B) is a monosulfonic acid compound having one sulfonic acid group. The treating agent of the present invention may contain a disulfonic acid compound represented by the following general formula (5) in addition to the monosulfonic acid compound.

In formula (5), c, d, and e are integers of 0 or more, and are integers satisfying c + d + e = 4-16. When c + d + e is less than 4, the effect of reducing roll contamination may be reduced. On the other hand, if l + m + n is more than 17, compatibility with the treatment agent may be deteriorated and may not be used. c + d + e is preferably 6-16, and more preferably 9-14.
M is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group. Details of M are the same as M described in the general formula (1).

  When the disulfonic acid compound is contained, the weight ratio of the monosulfonic acid compound which is the organic sulfonic acid compound (B) and the disulfonic acid compound represented by the general formula (5) (monosulfonic acid compound / disulfonic acid compound) is 50 / 50 to 99/1 are preferred, 70/30 to 99/1 are more preferred, and 80/20 to 98/2 are even more preferred.

[Organic Phosphate Ester Compound (C)]
The treatment agent of the present invention preferably further contains an organic phosphate compound (C) in addition to the smoothing component (A) and the organic sulfonic acid compound (B) from the viewpoint of reducing fluff. The organophosphate compound (C) is preferably at least one selected from the compound represented by the general formula (2) and the compound represented by the general formula (3).

In the general formulas (2) and (3), R ¹ is a hydrocarbon group having 6 to 24 carbon atoms. A ¹ O is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 15. n is an integer of 1-2. M ¹ is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group. Q ¹ is M ¹ or R ¹ O (A ¹ O) _m . Y is 1 or 2.

Examples of the hydrocarbon group for R ¹ include an alkyl group and an alkenyl group. The carbon number of R ¹ is preferably 8-24, and more preferably 12-24. The carbon number of R ¹ may be distributed, R ¹ may be linear or branched, and may be saturated or unsaturated.
A ¹ O is an oxyalkylene group having 2 to 4 carbon atoms. M which is the number of repeating oxyalkylene units is an integer of 0 to 15, preferably 0 to 10, more preferably 0 to 3, and particularly preferably m is 0 and no polyoxyalkylene group is contained. (A ¹ O) _m is preferably a polyoxyalkylene group having 50 mol% or more of oxyethylene units as oxyalkylene units.

n is an integer of 1-2. When n = 2, the two organic groups [R ¹ O (A ¹ O) _m ] — constituting the compound represented by the general formula (2) may be the same or different.
When Q = R ¹ O (A ¹ O) _m , the two organic groups [R ¹ O (A ¹ O) _m ] — constituting the compound represented by the general formula (3) may be the same or different. It may be.

M ¹ is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group. Examples of the alkali metal include lithium, sodium, and potassium. Examples of the ammonium group and the organic amine group include a group represented by NR ^a R ^b R ^c R ^d . The group represented by NR ^a R ^b R ^c R ^d is the same as M described for the organic sulfonic acid compound (B).

The organic phosphate ester compound (C) includes an organic phosphate ester compound (C1) represented by n = 1 in the general formula (2) and an organic phosphate ester compound (C2 represented by n = 2 in the general formula (2)). ) And organophosphate ester compounds (C3) represented by Y = 1, Q = R ¹ O (A ¹ O) _m in the organophosphate ester compounds (C1), (C2) and the general formula (3) ) Is preferable. These mixtures may contain an organic phosphate ester compound (C4) represented by Y = 1 and Q = hydrogen atom in the general formula (3).

The organic phosphoric ester compounds (C1), (C2), (C3) and (C4) and the P nuclear integral ratio (%) of inorganic phosphoric acid are calculated from the integrated values of the peaks derived from each phosphorus atom in 31P-NMR. be able to. In addition, P nucleus integral ratio (%) says what was calculated by making the sum total of the integral value of organophosphate ester compound (C1), (C2), (C3), (C4) and inorganic phosphoric acid 100%. The inorganic phosphoric acid will be described later.
The P nuclear integral ratio (%) of the organic phosphate compound (C1) is preferably 25 to 85%, more preferably 35 to 80%, and still more preferably 40 to 70%. The P nuclear integral ratio (%) of the organic phosphate compound (C2) is preferably 15 to 65%, more preferably 20 to 60%, and even more preferably 25 to 55%. The P nuclear integral ratio (%) of the organic phosphate compound (C3) is preferably 0 to 50%, more preferably 0 to 45%, and still more preferably 0 to 40%. The P nuclear integral ratio (%) of the organic phosphate compound (C4) is preferably 0 to 7%, more preferably 0 to 6%, and further preferably 0 to 5%. The P nuclear integral ratio (%) of the inorganic phosphoric acid is preferably 0 to 10%, more preferably 0 to 9%, and further preferably 0 to 8%.

There is no limitation in particular as a manufacturing method of an organic phosphate compound (C), A well-known method is employable. For example, in the method for producing the organic phosphate compound (C), a reaction product is obtained by reacting an organic hydroxyl compound represented by R ¹ O (A ¹ O) _m H with anhydrous phosphoric acid P ₂ O ₅ (I ). In step (I), the reaction may be carried out by adding inorganic phosphoric acid or water. The method for producing the organic phosphate compound (C) may include, after the step (I), a step (II) in which water is added to the reaction product for hydrolysis. By including the step (II), the ratio of the organic phosphate ester compounds (C3) and (C4) contained in the organic phosphate ester compound (C) can be adjusted. The amount of water added to the reaction product is preferably 0.01 to 5% by weight, more preferably 0.05 to 4% by weight, and more preferably 0.1 to 3% with respect to the organophosphate compound (C). More preferred is weight percent. When the amount of water added is less than 0.01% by weight and more than 5% by weight, it may be difficult to adjust the amount of the organic phosphate compound (C3) or (C4). The method for producing the organic phosphate compound (C) may include a step (III) of neutralizing with an alkali compound having M ¹ after the step (I) or the step (II).

  The organic phosphate ester compound (C) contains a heavy metal compound such as arsenic as a source of impurities in anhydrous phosphoric acid or inorganic phosphorus. The treatment agent of the present invention may contain a heavy metal compound such as arsenic. The weight ratio of the heavy metal compound to the non-volatile content of the treatment agent is preferably 0.01% by weight or less, more preferably 0.005% by weight or less, from the viewpoint of influence on the human body and environmental safety, and 0.001% by weight or less. More preferably, it is not more than% by weight.

In producing the organic phosphate compound (C), inorganic phosphoric acid and / or a salt thereof is produced. Therefore, the raw material containing the organic phosphate compound (C) (hereinafter referred to as raw material Z) contains inorganic phosphoric acid and / or a salt thereof. The ratio of inorganic phosphoric acid and / or salt thereof can be adjusted by the ratio of organic hydroxyl compound and anhydrous phosphoric acid P ₂ O ₅ , reaction conditions, and the like.

[Nonionic surfactant (D)]
The treatment agent of the present invention provides a nonionic surfactant (D) in addition to the above smoothing component (A) and organic sulfonic acid compound (B) from the viewpoint of imparting oil film strength and sizing properties to the raw yarn and improving the yarn-making property. ) Is further preferably contained. In addition, nonionic surfactant (D) says what remove | excludes the said smooth component (A). 1 type (s) or 2 or more types may be used for a nonionic surfactant (D).

  Nonionic surfactant (D) includes polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (hereinafter sometimes referred to as polyhydroxy ester), an ester in which at least one hydroxyl group of polyhydroxy ester is blocked with fatty acid, polyoxy Examples include alkylene polyhydric alcohol ether, polyoxyalkylene polyhydric alcohol fatty acid ester, polyoxyalkylene aliphatic alcohol ether, polyalkylene glycol fatty acid ester, polyhydric alcohol fatty acid ester, and the like.

(Polyhydroxyester, ester in which at least one hydroxyl group of polyhydroxyester is blocked with fatty acid)
The polyhydroxyester is structurally an ester of a polyoxyalkylene group-containing hydroxy fatty acid and a polyhydric alcohol, and it is preferable that two or more hydroxyl groups of the polyhydric alcohol are 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 a polyoxyalkylene group is bonded to a fatty acid hydrocarbon group via an oxygen atom, and one end that is not bonded to the fatty acid hydrocarbon group of the polyoxyalkylene group is It is a hydroxyl group.
Examples of the polyhydroxyester include an alkylene oxide adduct of an esterified product of a hydroxy fatty acid having 6 to 22 carbon atoms (preferably 16 to 20 carbon atoms) and a polyhydric alcohol.

  Examples of the hydroxy fatty acid having 6 to 22 carbon atoms include hydroxycaprylic acid, hydroxycapric acid, hydroxylauric acid, hydroxystearic acid, and ricinoleic acid, with hydroxyoctadecanoic acid and ricinoleic acid being preferred. Examples of the polyhydric alcohol include ethylene glycol, glycerin, sorbitol, sorbitan, trimethylolpropane, pentaerythritol and the like, and glycerin is preferable. Examples of the alkylene oxide include C2-C4 alkylene oxides such as ethylene oxide, propylene oxide, and butylene oxide.

3-60 are preferable and, as for the addition mole number of alkylene oxide, 8-50 are more preferable. The proportion of ethylene oxide in the alkylene oxide is preferably 50 mol% or more, more preferably 80 mol% or more.
When two or more types of alkylene oxide are added, the order of addition is not particularly limited, and the addition form may be either a block form or a random form. The addition of the alkylene oxide can be performed by a known method, but it is generally performed in the presence of a basic catalyst.

  The polyhydroxyester can be produced, for example, by esterifying a polyhydric alcohol and a hydroxy fatty acid (hydroxymonocarboxylic acid) under ordinary conditions to obtain an esterified product, and then adding an alkylene oxide to the esterified product. The polyhydroxyester can be suitably produced also by using an oil and fat obtained from nature such as castor oil or a hardened castor oil obtained by adding hydrogen to this, and further subjecting it to an addition reaction with an alkylene oxide.

  The nonionic surfactant (D) includes an ester obtained by blocking at least one hydroxyl group of the above-mentioned polyhydroxyester with a fatty acid. 6-24 are preferable and, as for carbon number of the fatty acid to block, 12-18 are more preferable. The carbon number of the hydrocarbon group in the fatty acid may be distributed, the hydrocarbon group may be linear or branched, may be saturated or unsaturated, It may have a polycyclic structure. Examples of such fatty acids include lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, eicosanoic acid, behenic acid, lignoceric acid and the like. There is no limitation in particular about the method of esterification, reaction conditions, etc., A well-known method and normal conditions are employable.

  Examples of the polyhydroxy ester and an ester obtained by blocking at least one hydroxyl group of the polyhydroxy ester with a fatty acid include, for example, hardened castor oil ethylene oxide adduct, castor oil ethylene oxide adduct, hardened castor oil ethylene oxide adduct monooleate, and hardened castor oil ethylene oxide adduct. Dioleate, hydrogenated castor oil ethylene oxide adduct trioleate, castor oil ethylene oxide adduct trioleate, hydrogenated castor oil ethylene oxide adduct tristearate, castor oil ethylene oxide adduct tristearate, among these, compatibility of treatment agents, oil film strength, fluff In terms of reduction, hydrogenated castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide adduct trioleate, hydrogenated castor oil ethylene oxide adduct tristearate. Rate is preferable.

(Polyoxyalkylene polyhydric alcohol ether)
The polyoxyalkylene polyhydric alcohol ether is a compound having a structure in which an alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide is added to the polyhydric alcohol.
Examples of the polyhydric alcohol include ethylene glycol, glycerin, trimethylolpropane, pentaerythritol, diglycerin, sorbitan, sorbitol, ditrimethylolpropane, dipentaerythritol, and sucrose. Of these, glycerin, trimethylolpropane, and sucrose are preferable.

As addition mole number of alkylene oxide, 3-100 are preferable, 4-70 are more preferable, and 5-50 are more preferable. The proportion of ethylene oxide in the alkylene oxide is preferably 50 mol% or more, and more preferably 80 mol% or more.
300-10000 are preferable, as for the weight average molecular weight of polyoxyalkylene polyhydric alcohol ether, 400-8000 are more preferable, and 500-5000 are more preferable. When the molecular weight is less than 300, the occurrence of fuzz and yarn breakage may not be reduced. On the other hand, when the molecular weight exceeds 10,000, the friction of the treatment agent becomes high, and not only the generation of fluff and yarn breakage cannot be reduced, but also it may deteriorate.

  Polyoxyalkylene polyhydric alcohol ethers include polyethylene glycol, glycerin ethylene oxide adduct, trimethylolpropane ethylene oxide adduct, pentaerythritol ethylene oxide adduct, diglycerin ethylene oxide adduct, sorbitan ethylene oxide adduct, sorbitan ethylene oxide propylene oxide adduct, sorbitol Examples thereof include, but are not limited to, an ethylene oxide adduct, a sorbitol ethylene oxide propylene oxide adduct, a ditrimethylolpropane ethylene oxide adduct, a dipentaerythritol ethylene oxide adduct, and a sucrose ethylene oxide adduct.

(Polyoxyalkylene polyhydric alcohol fatty acid ester)
A polyoxyalkylene polyhydric alcohol fatty acid ester is a compound having a structure in which a compound obtained by adding an alkylene oxide such as ethylene oxide, propylene oxide, or butylene oxide to a polyhydric alcohol and a fatty acid are ester-bonded.
Examples of the polyhydric alcohol include glycerin, trimethylolpropane, pentaerythritol, erythritol, diglycerin, sorbitan, sorbitol, ditrimethylolpropane, dipentaerythritol, and sucrose. Among these, glycerin, diglycerin, sorbitan, and sorbitol are preferable.

  Examples of fatty acids include lauric acid, myristic acid, myristic acid, palmitic acid, palmitoleic acid, isocetyl acid, stearic acid, isostearic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid, arachidic acid, eicosenoic acid, behenic acid, Examples include isodocosanoic acid, erucic acid, lignoceric acid, and isotetracosanoic acid.

As addition mole number of alkylene oxide, 3-100 are preferable, 5-70 are more preferable, and 10-50 are more preferable. The proportion of ethylene oxide in the alkylene oxide is preferably 50 mol% or more, and more preferably 80 mol% or more.
300-7000 are preferable, as for the weight average molecular weight of polyoxyalkylene polyhydric alcohol fatty acid ester, 500-5000 are more preferable, and 700-3000 are more preferable. When the molecular weight is less than 300, smoke may be generated in the heat treatment process, which may deteriorate the environment. In addition, occurrence of yarn breakage may not be reduced. On the other hand, when the molecular weight exceeds 7000, the friction of the treatment agent becomes high, and not only the generation of fluff and yarn breakage cannot be reduced, but also it may deteriorate.

  Examples of polyoxyalkylene polyhydric alcohol fatty acid esters include glycerin ethylene oxide adduct monolaurate, glycerin ethylene oxide adduct dilaurate, glycerin ethylene oxide adduct trilaurate, trimethylolpropane ethylene oxide adduct trilaurate, sorbitan ethylene oxide adduct monooleate, sorbitan ethylene oxide adduct dioleate Sorbitan ethylene oxide adduct trioleate, sorbitan ethylene oxide propylene oxide adduct monooleate, sorbitan ethylene oxide propylene oxide adduct dioleate, sorbitan ethylene oxide propylene oxide adduct trioleate, sorbitan ethylene oxide propylene oxide adduct trilaurate, It includes sugar ethylene oxide adducts Toriraureto like, but is not limited thereto.

(Polyoxyalkylene aliphatic alcohol ether)
The polyoxyalkylene aliphatic alcohol ether is a compound having a structure in which an alkylene oxide such as ethylene oxide, propylene oxide, or butylene oxide is added to an aliphatic monohydric alcohol.
Examples of polyoxyalkylene aliphatic alcohol ethers include alkylene oxides of aliphatic alcohols such as octyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, lauryl alcohol, tridecyl alcohol, myristyl alcohol, stearyl alcohol, isostearyl alcohol, and oleyl alcohol. Addenda may be mentioned.
As addition mole number of alkylene oxide, 1-100 mol is preferable, 2-70 mol is more preferable, and 3-50 mol is further more preferable. Further, the ratio of ethylene oxide to the whole alkylene oxide is preferably 20 mol% or more, more preferably 30 mol% or more, and further preferably 40 mol% or more.

(Fatty acid ester of polyalkylene glycol)
The fatty acid ester of polyalkylene glycol is a compound having a structure in which polyoxyethylene glycol, polyoxyethylene polyoxypropylene glycol, and a fatty acid are ester-bonded. 100-1000 are preferable, as for the weight average molecular weight of polyalkylene glycol, 150-800 are more preferable, and 200-700 are more preferable.

  Polyalkylene glycol fatty acid esters include polyethylene glycol monolaurate, polyethylene glycol dilaurate, polyethylene glycol monooleate, polyethylene glycol dioleate, polyethylene glycol monostearate, polyethylene glycol distearate, polyethylene polypropylene glycol monolaurate, polyethylene Examples thereof include, but are not limited to, polypropylene glycol dilaurate, polyethylene polypropylene glycol monooleate, and polyethylene polypropylene glycol dioleate.

(Polyhydric alcohol fatty acid ester)
The polyhydric alcohol fatty acid ester is a compound having a structure in which a polyhydric alcohol and a fatty acid are ester-bonded, and is a compound excluding the smooth component (A).
Examples of the polyhydric alcohol include ethylene glycol, trimethylolpropane, pentaerythritol, erythritol, diethylene glycol, diglycerin, sorbitan, sorbitol, ditrimethylolpropane, and sucrose. Among these, ethylene glycol, glycerin, diglycerin, sorbitan, and sorbitol are preferable.

  Examples of fatty acids include lauric acid, myristic acid, myristic acid, palmitic acid, palmitoleic acid, isocetyl stearic acid, isostearic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid, tuberculostearic acid, isoicosanoic acid, gadoleic acid Eicosenoic acid, behenic acid, isodocosanoic acid, erucic acid, lignoceric acid and the like.

The polyhydric alcohol fatty acid ester has at least one or two or more hydroxyl groups.
100-1000 are preferable, as for the weight average molecular weight of a polyhydric-alcohol fatty acid ester, 200-800 are more preferable, and 300-600 are more preferable.

  Examples of fatty acid esters include glycerol monolaurate, glycerol dilaurate, glycerol monooleate, glycerol dioleate, sorbitan monooleate, sorbitan dioleate, sucrose monolaurate, and sucrose dilaurate. It is not limited to.

  As a nonionic surfactant (D), it is preferable to use what refine | purified by removing a catalyst etc. from a viewpoint of heat resistance improvement.

[Treatment agent for synthetic fibers]
The processing agent of this invention contains a smoothing component (A) and the organic sulfonic acid compound (B) shown by the said General formula (1). Furthermore, the weight ratio of sulfate ions (SO ₄ ²⁻ ) detected from the non-volatile content of the treatment agent by ion chromatography is 300 ppm or less, and the weight ratio of chloride ions (Cl ⁻ ) is 300 ppm or less. As described above, when the sulfate ion and the chlorine ion detected from the non-volatile content of the treatment agent are set to a predetermined weight ratio or less, fluff, yarn breakage, and roll dirt can be dramatically reduced.
When the weight ratio of the sulfate ion exceeds 300 ppm or the weight ratio of the chloride ion exceeds 300 pm, sodium sulfate or sodium chloride falls off and accumulates on the drawing roll during spinning, increasing the yarn breakage yarn. On the roll that causes heat stretching, the accumulation of tar is accelerated and roll fouling is caused.
The method for analyzing sulfate ions and chloride ions by ion chromatography in the present invention is as described in the examples. Further, the non-volatile content in the present invention refers to an absolutely dry component when the treatment agent is heat-treated at 105 ° C. to remove the solvent and the like and reach a constant weight.

  From the viewpoint of further exerting the effects of the present invention, the weight ratio of the sulfate ion is preferably 250 ppm or less, more preferably 200 ppm or less, and further preferably 100 ppm or less. Similarly, the weight ratio of the chlorine ions is preferably 250 ppm or less, more preferably 200 pm or less, and even more preferably 100 ppm or less.

  As described above, the weight ratio of sulfate ions and chloride ions can be adjusted by reducing sodium sulfate and sodium chloride contained in the raw material X containing the organic sulfonic acid compound (B).

  The weight ratio of the smoothing component (A) to the non-volatile content of the treatment agent is preferably 20 to 70% by weight, more preferably 30 to 65% by weight, further preferably 40 to 65% by weight, particularly 40 to 60% by weight. preferable. When the weight ratio is less than 20% by weight, fluff may increase due to lack of smoothness. On the other hand, when the weight ratio is more than 70% by weight, the convergence may be insufficient, or when emulsified, the emulsion stability may be poor and cannot be used.

  The weight ratio of the organic sulfonic acid compound (B) in the nonvolatile content of the treatment agent is preferably 0.5 to 7% by weight, more preferably 1.0 to 7% by weight, and still more preferably 1.25 to 6% by weight. 1.5 to 6% by weight is particularly preferable. When the weight ratio is less than 0.5% by weight, roll dirt may not be reduced. On the other hand, when the weight ratio is more than 7% by weight, the friction increases and fluff may increase.

When the treatment agent of the present invention contains an organophosphate compound (C), the weight ratio of phosphate ions (PO ₄ ³⁻ ) detected from the non-volatile content of the treatment agent by ion chromatography is 500 ppm or less. It is preferable. When the weight ratio of the phosphate ion is more than 500 ppm, it may fall off on the drawing roll and cause an increase in yarn breakage. The weight ratio of the phosphate ion is more preferably 400 ppm or less, further preferably 300 ppm or less, and particularly preferably 200 ppm or less. The phosphate ion (PO ₄ ³⁻ ) is sometimes simply referred to as phosphate ion.

  As described above, as a method for adjusting the weight ratio of phosphate ions, the inorganic phosphoric acid and / or salt thereof contained in the raw material Z containing the organic phosphate compound (C) is reduced, or the amount of the raw material Z is blended. Or by using a filter aid such as diatomaceous earth as a treatment agent.

  When the treating agent of the present invention contains an organophosphate compound (C), the weight ratio of the organophosphate compound (C) in the nonvolatile content of the treating agent is preferably 0.05 to 10% by weight, and 08 to 8% by weight is more preferable, and 0.1 to 7% by weight is more preferable.

  When the treatment agent of the present invention contains a nonionic surfactant (D), the weight ratio of the nonionic surfactant (D) in the nonvolatile content of the treatment agent is preferably 20 to 70% by weight, and preferably 25 to 65% by weight. More preferably, 30 to 65% by weight is further preferable, and 30 to 60% by weight is particularly preferable.

(Other ingredients)
The treatment agent for synthetic fibers of the present invention is for emulsification of the treatment agent, assisting adhesion to the fiber, washing the treatment agent from the fiber with water, antistatic property to the fiber, lubricity, imparting convergence, etc. You may contain surfactant other than said organic sulfonic-acid compound (B), organophosphate ester compound (C), and nonionic surfactant (D). Examples of such surfactants include anionic surfactants such as fatty acid soaps; cationic surfactants such as alkylamine salts, alkylimidazolinium salts, and quaternary ammonium salts; amphoteric compounds such as lauryl dimethyl betaine and stearyl dimethyl betaine. Surfactant; dimethyl lauryl amine oxide etc. are mentioned. These surfactants can be used alone or in combination of two or more. The weight ratio of the surfactant in the nonvolatile content of the treatment agent in the case of containing these surfactants is not particularly limited, but is preferably 0.01 to 15% by weight, more preferably 0.1 to 10% by weight. preferable. In addition, a surfactant here means a thing with a weight average molecular weight of less than 1000.

  Moreover, in order to provide heat resistance, the processing agent for synthetic fibers of this invention may contain antioxidant further. Examples of the antioxidant include known ones such as phenol, thio, and phosphite. One or more antioxidants can be used. Although the weight ratio of the antioxidant in the non-volatile content of the treatment agent in the case of containing the antioxidant is not particularly limited, it is preferably 0.1 to 5% by weight, and more preferably 0.1 to 3% by weight.

  The treatment agent for synthetic fibers of the present invention may further contain a stock solution stabilizer (for example, water, ethylene glycol, propylene glycol). The proportion by weight of the stock solution stabilizer in the treatment agent is preferably 0.1 to 30% by weight, and more preferably 1 to 20% by weight.

The treatment agent for synthetic fibers of the present invention may be composed of the above-mentioned components consisting only of a non-volatile content, may be composed of a non-volatile content and a stock solution stabilizer, and the non-volatile content is diluted with a low-viscosity mineral oil. It may be a water-based emulsion obtained by emulsifying nonvolatile components in water. When the processing agent for synthetic fibers of the present invention is an aqueous emulsion obtained by emulsifying a nonvolatile content in water, the concentration of the nonvolatile content is preferably 5 to 35% by weight, and more preferably 6 to 30% by weight. The viscosity of the treatment agent and the non-volatile content was diluted with a low viscosity mineral oil (30 ° C.), from the viewpoint of uniformly applied to the fiber material, preferably 3~120mm ² / s, more preferably 5 to 100 mm ² / s.

  There is no limitation in particular about the manufacturing method of the processing agent for synthetic fibers of this invention, A well-known method is employable. The treating agent for synthetic fiber is produced by adding and mixing the above-mentioned respective components constituting in any or specific order. Each component may be purified by removing the catalyst and the like from the viewpoint of improving heat resistance. In particular, the smoothing component (A) and the nonionic surfactant (D) used in the present invention may contain inorganic substances, and when the effects of the present invention are significantly reduced, the inorganic substances may be removed and purified. desirable. As a method of removing and purifying the inorganic substance, a known method can be used. For example, the smooth component (A) can be removed by filtration using diatomaceous earth, and the nonionic surfactant (D). If so, it can be purified by adsorption removal using an inorganic synthetic adsorbent.

[Method for producing synthetic fiber filament yarn and fiber structure]
The method for producing a synthetic fiber filament yarn of the present invention includes a step of applying the synthetic fiber treating agent of the present invention to a raw material synthetic fiber filament yarn. According to the manufacturing method of the invention, the occurrence of scum and yarn breakage can be reduced, and a synthetic fiber filament yarn excellent in yarn quality can be obtained. In addition, the raw material synthetic fiber filament yarn in this invention means the synthetic fiber filament yarn to which the processing agent is not provided.

  There is no restriction | limiting in particular as a process of providing the processing agent for synthetic fibers, A well-known method is employable. Usually, a synthetic fiber treating agent is applied in the spinning process of the raw synthetic fiber filament yarn. After the treatment agent is applied, stretching and heat setting are performed by a heat roller, and the film is wound up. Thus, after providing a processing agent, when it has the process of heat-drawing, without being wound up once, the processing agent for synthetic fibers of this invention can be used conveniently. As an example of the temperature at the time of hot drawing, in the case of polyester and nylon, 210 to 260 ° C. is assumed for industrial materials, and 110 to 220 ° C. is assumed for clothing.

  As described above, the synthetic fiber treatment agent applied to the raw material synthetic fiber filament yarn is a treatment agent consisting of only the non-volatile content, a treatment agent obtained by diluting the non-volatile content with low-viscosity mineral oil, or emulsifying the non-volatile content in water. And water-based emulsion treatment agents. Although it does not specifically limit as an application method, Guide oil supply, roller oil supply, dip oil supply, spray oil supply, etc. are mentioned. Among these, guide oil supply and roller oil supply are preferable because of easy management of the applied amount.

  The applied amount of the non-volatile content of the treating agent for synthetic fibers is preferably 0.05 to 5% by weight, more preferably 0.1 to 3% by weight, and 0.1 to 2% by weight with respect to the raw material synthetic fiber filament yarn. % Is more preferable. If it is less than 0.05% by weight, the effects of the present invention may not be exhibited. On the other hand, if it exceeds 5% by weight, the non-volatile content of the treatment agent tends to fall off the yarn path, the tar on the heat roller increases significantly, and may lead to fluff and yarn breakage.

  (Raw material) Synthetic fiber filament yarns include filament yarns of synthetic fibers such as polyester fibers, polyamide fibers, and polyolefin fibers. The treatment agent for synthetic fibers of the present invention is suitable for synthetic fibers such as polyester fibers, polyamide fibers, and polyolefin fibers. As the polyester fiber, polyester (PET) having ethylene terephthalate as a main constituent unit, polyester (PTT) having trimethylene ethylene terephthalate as a main constituent unit, polyester (PBT) having main constituent unit of butylene ethylene terephthalate, and lactic acid are mainly used. Examples thereof include polyester (PLA) as a structural unit, examples of polyamide fibers include nylon 6 and nylon 66, and examples of polyolefin fibers include polypropylene and polyethylene. There is no limitation in particular as a manufacturing method of a synthetic fiber filament yarn, A well-known method is employable.

(Fiber structure)
The fiber structure of the present invention includes the synthetic fiber filament yarn obtained by the production method of the present invention. Specifically, a fabric woven by a water jet loom, an air jet loom, or a rapier loom using a synthetic fiber filament yarn provided with the synthetic fiber treatment agent of the present invention, and a circular knitting machine, a warp knitting machine, Or it is the knitted fabric knitted with the weft knitting machine. Examples of the use of the fiber structure include industrial materials such as tire cords, seat belts, airbags, fish nets, ropes, and clothing. There is no limitation in particular as a method of manufacturing a textile fabric and a knitted fabric, A well-known method is employable.

The present invention will be described below with reference to examples, but the present invention is not limited to the examples described herein. In the text and tables, “%” means “% by weight”. Example 4 is referred to as Reference Example 4.

[Raw material X containing organic sulfonic acid compound (B)]
(Raw material X-1)
As a raw material X-1 containing an organic sulfonic acid compound (B), HOSTAPUR SAS93 (manufactured by Hoechst, organic sulfonic acid compound (B) 93 wt%) was used. The raw material X-1 contains a large amount of bow glass. When the content (weight ratio) of sulfate ion (SO ₄ ²⁻ ) and chloride ion (Cl ⁻ ) contained in the raw material X-1 was measured by ion chromatography, the organic sulfonic acid compound (B) was The sulfate ion was 25950 ppm and the chlorine ion was 62 ppm.

(Raw material X-2)
As the raw material X-2 containing the organic sulfonic acid compound (B), Mercolate H95 (manufactured by Bayer, organic sulfonic acid compound (B) 95% by weight) was used. The raw material X-2 contains a large amount of sodium chloride. When the content (weight ratio) of sulfate ion (SO ₄ ²⁻ ) and chlorine ion (Cl ⁻ ) contained in the raw material X-2 was measured with an ion chromatograph, with respect to the organic sulfonic acid compound (B), The sulfate ion was 820 ppm and the chlorine ion was 30170 ppm.

[Preparation of raw material Y containing organic sulfonic acid compound (B)]
The raw materials Y-1 and Y-2 containing the organic sulfonic acid compound (B) are obtained by purifying the raw materials X-1 and X-2 containing the organic sulfonic acid compound (B) and removing the inorganic substances. Can do. As a method for removing the inorganic substance, a known method can be used, and it is not limited to the purification method shown in the examples.

(Preparation of raw material Y-1)
550 parts of methanol and 400 parts of ion-exchanged water were mixed, the temperature was adjusted at 45 ± 5 ° C., 700 parts of the raw material X-1 was gradually added while stirring, and completely dissolved. Next, this solution was allowed to stand at room temperature for 20 hours to precipitate the bow glass. The supernatant liquid containing no bow glass was taken out and distilled under reduced pressure at 60 to 80 ° C. to remove a part of methanol and water to obtain a raw material Y-1 containing 70% by weight of the organic sulfonic acid compound (B). .
When the content (weight ratio) of sulfate ion (SO ₄ ²⁻ ) and chloride ion (Cl ⁻ ) contained in the raw material Y-1 was measured by ion chromatography, the organic sulfonic acid compound (B) was The sulfate ion was 1085 ppm and the chlorine ion was 60 ppm.

(Preparation of raw material Y-2)
600 parts of ion-exchanged water was heated to 80 ± 5 ° C., and 400 parts of the raw material X-2 was gradually added while stirring to dissolve completely. Next, after cooling this solution to 40 ° C., sodium chloride was removed using an ion exchange resin to obtain a raw material Y-2 containing 40% by weight of the organic sulfonic acid compound (B).
When the content (weight ratio) of sulfate ions (SO ₄ ²⁻ ) and chloride ions (Cl ⁻ ) contained in the raw material Y-2 was measured with an ion chromatograph, the organic sulfonic acid compound (B) was The sulfate ion was 105 ppm and the chlorine ion was 2115 ppm.

[Preparation of raw materials Z-1 to Z-6 containing organophosphate compound (C)]
(Preparation of raw material Z-1)
820 parts of isocetyl alcohol was charged into a reaction vessel, and 180 parts of diphosphorus pentoxide were added little by little while stirring at 60 ± 5 ° C. while stirring. Thereafter, aging was performed at 75 ± 5 ° C. for 3 hours to prepare a raw material Z-1 containing an organic phosphate compound (C) having a nonvolatile content of 100% by weight.
The P nuclear integral ratios of the organic phosphate compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid are 33.05%, 29.81%, 33.82%, 2.76%, respectively. 0.56%.

(Preparation of raw material Z-2)
The reaction vessel was charged with 800 parts of C11-15 alcohol, and 200 parts of diphosphorus pentoxide at 60 ± 5 ° C. was added little by little while stirring while paying attention to the reaction temperature. Thereafter, the mixture was aged at 75 ± 5 ° C. for 3 hours to prepare a raw material Z-2 containing an organic phosphate compound (C).
The P nuclear integral ratios of the organic phosphate compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid are 44.23%, 40.31%, 13.79%, and 1.09%, respectively. 0.58%.

(Preparation of raw material Z-3)
To 997 parts of the raw material Z-2 prepared above, 3 parts of ion-exchanged water was added and subjected to a hydrolysis treatment at 90 ° C. for 3 hours. Then, the dehydration process for 3 hours was performed at 115 degreeC, and the raw material Z-3 containing an organophosphate ester compound (C) was prepared.
The P nuclear integral ratios of the organic phosphate compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid are 56.72%, 40.49%, 0.00%, 0.00%, respectively. It was 2.78%.

(Preparation of raw material Z-4)
In a reaction vessel, 600 parts of oleyl alcohol were charged, and 110 parts of diphosphorus pentoxide were added little by little while stirring at 70 ± 5 ° C. while stirring. Thereafter, the mixture was aged at 75 ± 5 ° C. for 3 hours to prepare a raw material Z-4 containing an organic phosphate compound (C).
The P nuclear integral ratios of the organic phosphate compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid are 57.65%, 35.26%, 4.57%, 0.44%, respectively. 2.07%.

(Preparation of raw material Z-5)
In a reaction vessel, 600 parts of oleyl alcohol were charged, and 110 parts of diphosphorus pentoxide were added little by little while stirring at 70 ± 5 ° C. while stirring. Thereafter, the mixture was aged at 70 ± 5 ° C. for 3 hours. Next, 15 parts of ion-exchanged water is added, and a water treatment is performed at 90 ° C. for 3 hours. Next, 200 parts of dibutylethanolamine is gradually added to neutralize, and a raw material containing an organophosphate compound (C) Z-5 was prepared.
The P nuclear integral ratios of the organic phosphate compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid are 55.18%, 35.38%, 2.43%, 0.00%, respectively. 7.01%.

(Preparation of raw material Z-6)
To 970 parts of the raw material Z-1 prepared above, 30 parts of ion-exchanged water was added and subjected to a hydrolysis treatment at 90 ° C. for 3 hours. Then, the dehydration process for 3 hours was performed at 115 degreeC, and the raw material Z-3 containing an organophosphate ester compound (C) was prepared.
The P nuclear integral ratios of the organic phosphate compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid are 65.43%, 31.74%, 0.00%, 0.00%, respectively. It was 2.83%.

In addition, the P nuclear integral ratio of the organic phosphate ester compounds (C1), (C2), (C3), (C4) and inorganic phosphoric acid was calculated by the following method using ³¹ P-NMR.
About 30 mg of the non-volatile content of the measurement sample was weighed into an NMR sample tube having a diameter of 5 mm, dissolved by adding about 0.5 ml of heavy water (D ₂ O) as a deuterated solvent, and ³¹ P-NMR measurement apparatus (BRUKER) (AVANCE400, 162 MHz)

[Examples 1-11, Comparative Examples 1-9]
The components described in Tables 2 and 3 were mixed and stirred until uniform to prepare a treatment agent. Using each of the prepared treatment agents, pin dirt accumulation, pin dirt wiping property, and tension fluctuation were evaluated by the following methods. The results are shown in Tables 2 and 3.
In addition, the number of the non volatile matter composition of the processing agent of Table 2, 3 shows the weight ratio of each component (raw materials X, Y, and Z are those non volatile matters) which occupy for the non volatile matter of a processing agent. Details of the treating agent components in Tables 2 and 3 are shown in Table 1.

(Measurement method of sulfate ion (SO ₄ ²⁻ ), chlorine ion (Cl ⁻ ), phosphate ion (PO ₄ ³⁻ ))
Accurately weigh 5 g of sample (non-volatile content of treatment agent or non-volatile content of raw materials X, Y, and Z), add 95 g of ultrapure water little by little while stirring to make an aqueous solution, and make a constant volume in a 100 ml volumetric flask. . 2 ml of the prepared aqueous solution is passed through an ODS (a silica gel having an octadecyl group chemically bonded) pretreatment cartridge, and the liquid from which lipophilic substances have been removed is subjected to ion chromatography analysis. Detection was carried out under the following ion chromatographic conditions. The detection amount was measured by the peak area ratio with respect to a standard solution with a known concentration, and the amounts of sulfate ion (SO ₄ ²⁻ ), phosphate ion (PO ₄ ³⁻ ), and chlorine ion (Cl ⁻ ) were converted. The quantification limit was 0.6 ppm or less for sulfate ion (SO ₄ ²⁻ ), 1.0 ppm or less for chlorine ion (Cl ⁻ ), and 0.3 ppm or less for phosphate ion (PO ₄ ³⁻ ). * In Tables 2 and 3 indicates below the limit of quantification.
<Ion chromatographic conditions>
Apparatus: Analytical column using ICS-1500 suppressor manufactured by Dionex: Dionex IonPac AS14 Inner diameter 4.0 mm × length 50 mm
Guard column: Dionex IonPac AG14 ID 4.0 mm x length 250 mm
Eluent: 3.5 mmol Na ₂ CO ₃ , 1.0 mmol NaHCO ₃
Flow rate: 1.5ml / min

(Evaluation of pin accumulation, pin wiping, and tension fluctuation)
After the treatment agent prepared above was quantitatively applied to 1000 denier, 96-filament non-lubricated polyester filament by 20% by weight and passed through a roller heated to 150 ° C. with a running yarn friction measurement machine, the volatile matter was removed. The sample was brought into contact with a satin chrome pin heated to 250 ° C., and run for 4 hours at an initial tension of 500 g and a running speed of 2 m / min. The degree of pin dirt accumulation, pin dirt wiping property, and tension fluctuation were evaluated. In addition, in order to perform stricter evaluation, 20 weight% of processing agents were provided.

The degree of pin accumulation was evaluated according to the following criteria.
◎: Dirt is hardly recognized ○: Dirt is slightly recognized x: Dirt is clearly accumulated

The tension fluctuation value was calculated by the following formula.
Tension fluctuation value (g) = tension after running the yarn for 4 hours (g) −initial tension (g)
Further, tension fluctuation was evaluated from the tension fluctuation value according to the following criteria.
A: 0 g to less than 30 g ○: 30 g or more and less than 50 g x: 50 g or more

The pin wipeability was evaluated by the following method.
The dirt generated on the chrome pin at the time of pear was wiped off by immersing a solution of sodium hydroxide in water and glycerin into gauze. The wiping property was evaluated by the number of times required for wiping.
◎: Can be wiped off by wiping less than 5 times ○: Can be wiped by wiping 5 times or more and less than 20 times ×: Cannot be wiped by wiping 20 times or more

As can be seen from Tables 2 and 3, in the examples, the treatment agent with sulfate ions and chloride ions detected from the non-volatile content of the treatment agent is used at a predetermined ratio or less is used. It is extremely superior. That is, the roll dirt at the time of manufacturing a synthetic fiber can be reduced, the cleaning interval of a roll can be lengthened, and the frequency | count of cleaning can be decreased. Further, the tension fluctuation value is also extremely small, and it can be seen that fluff and yarn breakage can be dramatically reduced.
On the other hand, in the comparative example, the ratio of sulfate ions or chlorine ions detected from the non-volatile content of the treatment agent is high, so that there is a lot of accumulation of dirt on the pins and the wiping property is inferior. Moreover, it can be seen that the tension fluctuation value is extremely large, and fluff and yarn breakage frequently occur.

Claims (11)

A treating agent for synthetic fibers containing a smooth component (A) and an organic sulfonic acid compound (B) represented by the following general formula (1),
The weight ratio of the organic sulfonic acid compound (B) in the nonvolatile content of the treatment agent is 1.25 to 12% by weight,
The weight ratio of sulfate ions (SO ₄ ²⁻ ) detected from the nonvolatile content of the treatment agent by ion chromatography is 200 ppm or less, and the weight ratio of chloride ions (Cl ⁻ ) is 200 ppm or less.
Treatment agent for synthetic fibers.

(In the formula (1), a and b are integers of 0 or more and are integers satisfying a + b = 5 to 17. M is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group.)   The processing agent of Claim 1 whose weight ratio of the said smooth component (A) to a processing agent is 20 to 70 weight%. Weight ratio of said organic sulfonic acid compound to total nonvolatile content of the treatment agent (B) is 1.25 7 wt%, the treatment agent according to claim 1 or 2. Further containing an organic phosphate compound (C),
Weight ratio of phosphate ions (PO 4 ^_3-), which is detected from the nonvolatile content of the treating agent by ion chromatography is 500ppm or less, treating agent according to any one of claims 1 to 3.   The processing agent of Claim 4 whose weight ratio of the said organic phosphate ester compound (C) to the non volatile matter of a processing agent is 0.05-5 weight%. The treatment according to claim 4 or 5, wherein the organophosphate compound (C) is at least one selected from a compound represented by the following general formula (2) and a compound represented by the following general formula (3). Agent.

(In formula (2), ^{R 1} is .A ¹ O is a hydrocarbon group having 6 to 24 carbon atoms an oxyalkylene group having 2 to 4 carbon atoms, m is an integer of 0 to 15 .n Is an integer of ¹ to 2. M ¹ is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group.)

(In Formula (3), R ¹ is a hydrocarbon group having 6 to 24 carbon atoms. A ¹ O is an oxyalkylene group having 2 to 4 carbon atoms, and m is an integer of 0 to 15.) ¹ is a hydrogen atom, an alkali metal, an ammonium group or an organic amine group, Q ¹ is M ¹ or R ¹ O (A ¹ O) _m , and Y is 1 or 2.   Furthermore, the processing agent in any one of Claims 1-6 containing a nonionic surfactant (D).   The processing agent of Claim 7 whose weight ratio of the said nonionic surfactant (D) to the non volatile matter of a processing agent is 20 to 70 weight%.   A synthetic fiber filament yarn obtained by applying the treatment agent according to any one of claims 1 to 8 to a raw material synthetic fiber filament yarn.   The manufacturing method of a synthetic fiber filament yarn including the process of providing the processing agent in any one of Claims 1-8 to a raw material synthetic fiber filament yarn.   A fiber structure comprising the synthetic fiber filament yarn according to claim 9 and / or the synthetic fiber filament yarn obtained by the production method according to claim 10.