WO2016002368A1 - Synthetic fibre treatment agent, and use thereof - Google Patents

Abstract

Provided is a synthetic fibre treatment agent which achieves excellent spun yarn stability even in facilities where the number of yarns is increased to 8 yarns/1100 dtex or more, and which, in a step in which synthetic fibres are produced, is capable of reducing fluff formation and yarn breakage, exhibits excellent heat resistance, and does not adversely affect the production environment. Also provided are: a synthetic fibre filament yarn having the treatment agent applied thereto; a production method for the synthetic fibre filament yarn using the treatment agent; and a fibre structure including the synthetic fibre filament yarn obtained using the production method. The synthetic fibre treatment agent includes: a fatty acid amine salt (A) represented by general formula (1); and a specific ester compound (B).

Description

Treatment agent for synthetic fiber and its use

The present invention relates to a synthetic fiber treating agent and its use.

Synthetic fibers are widely used in addition to clothing, such as high-strength fibers for industrial materials. Recently, in order to improve the productivity of synthetic fibers, production facilities have been increased in speed and multiple yarns. Higher production speed not only promotes thermal degradation of the fiber treatment agent by increasing the heat set temperature, but also destabilizes the running state of yarn during yarn production and increases yarn swaying. Since the yarn path interval on the goded roll is narrowed by this, contact occurs between adjacent yarns to cause yarn breakage and increase in fluff, which hinders improvement in productivity.

The treatment agent of the prior art that is used in the production of synthetic fibers and suppresses the occurrence of yarn breakage and fluff is composed of an acidic phosphate ester and a phosphate ester salt obtained by neutralizing the acidic phosphate ester with a base. A synthetic fiber treatment agent (Patent Document 1) or a reaction product of an alkylene oxide adduct of glyceride having one or more hydroxyl groups in the molecule and a dibasic acid component, the main component of which is an aliphatic monovalent ester compound. There is an example which proposed the processing agent for synthetic fibers (patent document 2).

Japanese Laid-Open Patent Publication No. 10-245776 Japanese Laid-Open Patent Publication No. 5-339875

However, these treatment agents were able to cope with about 4 yarns / 1100 dtex, but in the recent trend of multiple yarns, in a multi-yarn facility of 8 yarns / 1100 dtex or more, a heat set roller As the temperature rises, the working environment deteriorates due to increased smoke generation, the number of roller cleanings increases due to increased dirt on the rollers, and the running yarn state becomes unstable, causing contact between adjacent yarns and breaking the yarn. There was a problem that caused generation of hair and an increase in fluff, and stable operation was not possible.

Thus, there is a strong demand for a treatment agent for synthetic fibers that can produce high-performance fibers with high grade and high efficiency while having excellent running-stability stability, has excellent heat resistance, and does not deteriorate the production environment. It was.

The object of the present invention is to improve the running stability and reduce the occurrence of fluff and yarn breakage in the process of producing synthetic fibers, even in a multi-threaded facility of 8 yarns / 1100 dtex or more. Synthetic fiber treatment agent that is superior in heat resistance and does not deteriorate the production environment, synthetic fiber filament yarn provided with the treatment agent, method for producing synthetic fiber filament yarn using the treatment agent, and production It is providing the fiber structure containing the synthetic fiber filament yarn obtained by the method.

As a result of intensive studies, the present inventors have found that the above-described problems can be solved by a synthetic fiber treatment agent containing a specific fatty acid amine salt (A) and a specific ester compound (B). Reached.
That is, the synthetic fiber treatment agent of the present invention is a synthetic fiber treatment agent provided in the spinning process, and includes a fatty acid amine salt (A) represented by the following general formula (1) and a polyhydric alcohol fatty acid ester. An ester compound (B) which is a compound (B2),
The alcohol constituting the compound (B2) is trivalent, the compound (B2) has three ester bonds in the molecule,
The total weight of the fatty acid amine salt (A) and the ester compound (B) is 15% by weight or more and 75% by weight or less based on the nonvolatile content of the treatment agent;
It is a synthetic fiber processing agent whose weight ratio (B / A) of the said fatty-acid amine salt (A) and the said ester compound (B) is 1/1 or more and 1000/1 or less.

(Wherein R ¹ represents an alkyl group or alkenyl group having 4 to 30 carbon atoms, R ² represents an alkyl group or alkenyl group having 6 to 24 carbon atoms, and AO represents an oxyalkylene group having 2 or 3 carbon atoms) M and n represent the average added mole number of AO, and m + n is a number satisfying 1 to 25.)

The alcohol constituting the compound (B2) is preferably at least one selected from glycerin and trimethylolpropane.

It is preferable to further contain a sulfur-containing ester compound (C) represented by the following general formula (3).
R ⁵ OOC— (CH ₂ ) _q —S— (CH ₂ ) _p —COOQ (3)
(In the formula, R ⁵ is a hydrocarbon group having 12 to 24 carbon atoms. Q is a hydrogen atom or a hydrocarbon having 12 to 24 carbon atoms.)

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

The method for producing a synthetic fiber filament yarn of the present invention includes a step of applying the treatment 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.

Since the fiber treatment agent of the present invention is excellent in heat resistance, even in a multi-threaded facility of 8 yarns / 1100 dtex or more, it is excellent in running yarn stability and in the process of producing synthetic fibers. The occurrence of fluff and yarn breakage can be reduced and the production environment is not deteriorated.
Since the synthetic fiber filament yarn of the present invention is provided with the synthetic fiber treatment agent of the present invention, it has excellent running yarn stability even in a multi-threaded facility of 8 yarns / 1100 dtex or more. In addition, in the process of producing the synthetic fiber, the occurrence of fluff and yarn breakage can be reduced, and the production environment is not deteriorated.
Since 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, even if it is a multi-threaded facility of 8 yarns / 1100 dtex or more, the running yarn In the process of producing a synthetic fiber with excellent stability, generation of fluff and yarn breakage can be reduced, and the production environment is not deteriorated.

The treating agent for synthetic fibers of the present invention contains the fatty acid amine salt (A) represented by the general formula (1) and a specific ester compound (B). This will be described in detail below.

(Fatty acid amine salt (A))
When the fatty acid amine salt (A) is applied to a treating agent for synthetic fibers, it is excellent in running stability and produces synthetic fibers even in a multi-threaded facility of 8 yarns / 1100 dtex or more. In the process, generation of fluff and yarn breakage can be reduced.
The reason why it is excellent in running yarn stability even with multi-threaded equipment is not clear, but since the extreme pressure capability of fatty acid amine salt is suppressed by the oxyalkylene skeleton, friction between the fiber and the drawing roller Is not too high and not too low, and can be optimized, and it is estimated that slippage in the drawing direction is secured sufficiently and the running state is stabilized while suppressing the side slip of the yarn. ing.

In the formula, R ¹ represents an alkyl group or alkenyl group having 4 to 30 carbon atoms. The number of carbon atoms is preferably 6 to 28, more preferably 8 to 26, still more preferably 10 to 24, and particularly preferably 12 to 18. If it is less than 4, fluff increases because the oil film is weak, and if it exceeds 30, friction between fiber metals becomes high and fluff increases.
R ¹ 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.

Examples of the alkyl group represented by R ¹ include butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, dodecyl group, tetradecyl group, 9-tetradecenyl group, pentadecyl group, hexadecyl group, 9 -Hexadecenyl group, 2-hexyldecyl group, heptadecyl group, octadecyl group, 2-octyldecyl group, 2-hexyldecyl group, (Z) -9-octadecenyl group, (E) -9-octadecenyl group, (E)- 11-octadecenyl group, (Z, Z) -9,12-octadecadienyl group, (Z, Z, Z) -9,12,15-octadecatrienyl group, 10-methyloctadecyl group, icosyl group, 2-octyldodecyl group, (Z) -9-icosenyl group, (Z) -11-icocenyl group, docosyl group, 2-decyldodecyl group, (Z) -13-docosenyl group, tetracosyl group, 2-decyltetradecyl group, (Z) -15-tetracocenyl group, hexacosyl group, octacosyl group, tricontanyl group, and the like.
Among these, hexyl, heptyl, octyl, nonyl, decyl, dodecyl, tetradecyl, 9-tetradecenyl, pentadecyl, hexadecyl, 9-hexadecenyl, 2-hexyldecyl, heptadecyl, Octadecyl group, 2-octyldecyl group, 2-hexyldecyl group, (Z) -9-octadecenyl group, (E) -9-octadecenyl group, (E) -11-octadecenyl group, (Z, Z) -9, 12-octadecadienyl group, (Z, Z, Z) -9,12,15-octadecatrienyl group, 10-methyloctadecyl group, icosyl group, 2-octyldodecyl group, (Z) -9-icosenyl Group, (Z) -11-icosenyl group, docosyl group, 2-decyldodecyl group, (Z) -13-docosenyl group, tetracosyl group, 2 A decyltetradecyl group, (Z) -15-tetracocenyl group, hexacosyl group, octacosyl group are preferable, and an octyl group, nonyl group, decyl group, dodecyl group, tetradecyl group, 9-tetradecenyl group, pentadecyl group, hexadecyl group, 9 -Hexadecenyl group, 2-hexyldecyl group, heptadecyl group, octadecyl group, 2-octyldecyl group, 2-hexyldecyl group, (Z) -9-octadecenyl group, (E) -9-octadecenyl group, (E)- 11-octadecenyl group, (Z, Z) -9,12-octadecadienyl group, (Z, Z, Z) -9,12,15-octadecatrienyl group, 10-methyloctadecyl group, icosyl group, 2-octyldodecyl group, (Z) -9-icosenyl group, (Z) -11-icosenyl group, docosyl group, 2-decyl group Dodecyl group, (Z) -13-docosenyl group, tetracosyl group, 2-decyltetradecyl group, (Z) -15-tetracocenyl group, hexacosyl group are more preferable, and decyl group, dodecyl group, tetradecyl group, 9-tetradecenyl group are more preferable. Group, pentadecyl group, hexadecyl group, 9-hexadecenyl group, 2-hexyldecyl group, heptadecyl group, octadecyl group, 2-octyldecyl group, 2-hexyldecyl group, (Z) -9-octadecenyl group, (E)- 9-octadecenyl group, (E) -11-octadecenyl group, (Z, Z) -9,12-octadecadienyl group, (Z, Z, Z) -9,12,15-octadecatrienyl group, 10-methyloctadecyl group, icosyl group, 2-octyldodecyl group, (Z) -9-icocenyl group, (Z) -11-icosenyl group More preferably a group, a docosyl group, a 2-decyldodecyl group, a (Z) -13-docosenyl group, or a tetracosyl group.

In the formula, R ² represents an alkyl group or alkenyl group having 4 to 24 carbon atoms. The number of carbon atoms is preferably 6-22, more preferably 8-20, and even more preferably 10-18. If it is less than 4, fluff increases because the oil film is weak, and if it exceeds 24, friction between fiber metals increases and fluff increases.
R ² 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.

(OO) _m or (AO) For the oxyalkylene group represented by _n , AO represents an oxyalkylene group having 2 or 3 carbon atoms, and the addition form is either block addition, random addition, or a combination of block addition and random addition. But there is no limit.

M and n represent the average added mole number of AO, and m + n is a number satisfying 1 to 25. m + n is preferably 2 to 18, more preferably 4 to 16, further preferably 6 to 14, and particularly preferably 8 to 12. If it is less than 1, the yarn sway is increased and the running yarn stability is lowered, and if it exceeds 25, the friction becomes too high and the drawability is lowered.

Although it does not specifically limit as said fatty-acid amine salt (A), For example, (EO6) butyl amino ether / butyrate, (EO6) hexyl amino ether / capronate, (EO6) octyl amino ether / caprylate, ( EO6) decylaminoether / caprate, (EO6) laurylaminoether / laurate, (EO6) tetradecylaminoether / myristate, (EO6) hexadecylaminoether / palmitate, (EO6) oleylamino Ether / stearate, (EO6) stearylaminoether / oleate, (EO6) gadoleylaminoether / gadelate, (EO6) tetracosylaminoether / erucate, (EO10) oleylaminoether / olein Acid salt, (EO10) Ileaminoether / erucate, (EO3) laurylaminoether / palmitate, (EO3) laurylaminoether / stearate, (EO7) laurylaminoether / oleate, (EO15) oleylaminoether / stearic acid Salts, (PO3, EO5) stearylaminoether / laurate, (PO5, EO3) stearylaminoether / palmitate.
Among these, (EO10) oleylaminoether / oleate, (EO10) oleylaminoether / erucate, (EO3) laurylaminoether / palmitate, (EO3) laurylaminoether / stearate, (EO7) Lauryl amino ether / oleate, (EO15) oleyl amino ether / stearate, (PO3, EO5) stearyl amino ether / laurate, (PO5, EO3) stearyl amino ether / palmitate are preferred,
Furthermore, (EO10) oleylaminoether / oleate and (EO10) oleylaminoether / erucate are particularly preferable from the viewpoint of obtaining the effect of the present application.
Note that EO represents an oxyethylene group, and PO represents an oxypropylene group. (EO6) represents a polyoxyethylene group in which m + n is 6 mol, (PO3, EO5) represents a polyalkylene group in which m + n is 3 + 5 = 8 mol, and the polyalkylene group is an oxypropylene group and 3 mol oxypropylene group. It represents that 5 mol of ethylene groups are randomly included.

The method for producing the fatty acid amine salt (A) is not particularly limited. For example, the fatty acid amine salt (A) can be obtained by reacting a fatty acid with a polyoxyalkylene alkylamino ether. When the synthetic fiber treatment agent contains components other than the fatty acid amine salt (A), the fatty acid amine salt (A) is obtained by previously reacting the fatty acid with the polyoxyalkylene alkylamino ether, and then blended into the treatment agent. Alternatively, the reaction can be carried out in a synthetic fiber treating agent containing a fatty acid and a polyoxyalkylene alkylamino ether. After compounding polyoxyalkylene alkylamino ether with a synthetic fiber treating agent containing a fatty acid, it can be reacted in the treating agent.

(Ester compound (B))
The ester compound (B) is at least one selected from the ester compound (B1) represented by the general formula (2) and the polyhydric alcohol fatty acid ester compound (B2). The ester compound (B) does not contain a sulfur-containing ester described later.
The treating agent of the present invention contains an ester compound (B) in addition to the fatty acid amine salt (A). The ester compound (B) improves the performance of suppressing the skid of the fatty acid amine salt (A).
When the fatty acid amine salt (A) and the ester compound (B) are used in combination, the reason for improving the ability to suppress skid is not clear, but the lubricity is increased by the ester compound (B), whereby the synthetic fiber is stretched. It is estimated that the dynamic friction of the stretching roller in the rotational direction is lower than the side-sliding static friction perpendicular to the rotational direction of the stretching roller.

The ester compound (B1) is represented by the general formula (2).

In the general formula (2), R ³ represents an alkyl group or alkenyl group having 4 to 24 carbon atoms. The number of carbon atoms is preferably 6-22, more preferably 8-20, and even more preferably 10-18. If it is less than 4, fluff increases because the oil film is weak, and if it exceeds 24, friction between fiber metals increases and fluff increases. 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.

In the formula, R ⁴ represents an alkyl group or alkenyl group having 4 to 24 carbon atoms. The number of carbon atoms is preferably 6-22, more preferably 8-20, and even more preferably 10-18. If it is less than 4, fluff increases because the oil film is weak, and if it exceeds 24, friction between fiber metals increases and fluff increases.
R ⁴ 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.

The ester compound (B1) is not particularly limited. For example, 2-decyltetradecanoyl erucinate, 2-octyldodecyl 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, oleyl oleate are, among others, it is not biased on the chain length of the two alkyl groups R ³ and R ⁴ are dynamic friction decreases, since the side slip can be suppressed, 2-decyl-tetradecanoyl erucyl sulfonate, 2-octyldodecyl stearate, Lee Octyl palmitate, isooctyl stearate, lauryl oleate, isotridecyl stearate, hexadecyl stearate, isostearyl oleate, oleyl octanoate, oleyl laurate, oleyl palmitate, oleyl stearate, oleyl oleate preferable.

The polyhydric alcohol fatty acid ester compound (B2) is an ester having a structure in which an aliphatic polyhydric alcohol and a fatty acid are ester-bonded.

The polyhydric alcohol constituting the polyhydric alcohol fatty acid ester compound (B2) 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 3.
Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4- Butanediol, 2-methyl-1,3-propanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, cyclohexanediol, cyclohexanedimethanol, glycerin, trimethylolpropane, pentaerythritol, erythritol, Examples include diglycerin, sorbitan, sorbitol, ditrimethylolpropane, dipentaerythritol, triglycerin, tetraglycerin, and sucrose. 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 (aliphatic monovalent carboxylic acid) constituting the polyhydric alcohol fatty acid ester compound (B2) 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. The number of carbon atoms of the fatty acid is preferably from 8 to 24, more preferably from 10 to 20, and even more preferably from 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 polyhydric alcohol fatty acid ester compound (B2) is a compound having two or more ester bonds in the molecule, but it is preferably a compound having three or more ester bonds in the molecule from the viewpoint of yarn production. More preferably, the compound has three ester bonds in the molecule.
There is no particular limitation on the iodine value of the polyhydric alcohol fatty acid ester compound (B2).

The weight average molecular weight of the polyhydric alcohol fatty acid ester compound (B2) is preferably 500 to 1000, more preferably 500 to 800, and even more preferably 500 to 700. 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 is more than 1000, not only smoothness is insufficient and fluff frequently occurs, and high-quality fibers are not obtained, but the quality in the weaving or knitting process may be inferior. 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 at a sample concentration of 3 mg / cc. And calculated from the peak measured by the differential refractive index detector.

Examples of the polyhydric alcohol fatty acid ester compound (B2) include trimethylolpropane tricaprylate, trimethylolpropane tricaprinate, trimethylolpropane trilaurate, trimethylolpropane trioleate, trimethylolpropane (laurate, myristylate, palmitate ), Trimethylolpropane (laurate, myristylate, oleate), trimethylolpropane dicaprylate, trimethylolpropane dicaprinate, trimethylolpropane dilaurate, trimethylolpropane dioleate, trimethylolpropane (laurate, myristylate), trimethylol Propane (laurate, oleate), trimethylolpropane (myristylate, oleate), palm oil, Seed oil, palm oil, glycerol trilaurate, glycerol trioleate, glycerol triisostearate, glycerol dioleate, glycerol monolaurate, diglycerol dioleate, sorbitan trioleate, sorbitan (laurate, myristylate, oleate), Sorbitan dilaurate, sorbitan monooleate, pentaerythritol tetracaprylate, pentaerythritol tetracaprinate, pentaerythritol tetralaurate, erythritol tetralaurate, erythritol trioleate, erythritol dipalmitate, 1.6 hexanediol dioleate, etc. Is mentioned.

As the polyhydric alcohol fatty acid ester compound (B2), those synthesized by a known method using a polyhydric alcohol and a fatty acid which are generally commercially available may be used. In addition, natural esters obtained from nature such as natural fruits, seeds or flowers, and natural esters satisfying the constitution of the polyhydric alcohol fatty acid ester compound (B2) can be used as they are, or natural esters can be used as necessary. You may refine | purify by a well-known method, and you may use the ester which isolate | separated and refine | purified the refine | purified ester further using the melting | fusing point difference by a well-known method.

(Sulfur-containing ester compound (C))
The treating agent of the present invention may contain a sulfur-containing ester compound (C) in addition to the fatty acid amine salt (A) and the ester compound (B). It is preferable that the sulfur-containing ester compound (C) is contained because heat resistance is increased.
The sulfur-containing ester compound (C) is a compound represented by the following general formula (3).

R ⁵ OOC— (CH ₂ ) _q —S— (CH ₂ ) _p —COOQ (3)

In the general formula (3), R ⁵ is a hydrocarbon group having 12 to 24 carbon atoms. Q is a hydrogen atom or a hydrocarbon having 12 to 24 carbon atoms. R ⁵ may be either linear or branched, but is preferably linear from the viewpoint of reducing dynamic friction. Examples of the hydrocarbon group include an alkyl group and an alkenyl group, and an alkenyl group is preferable. The number of carbon atoms of the hydrocarbon group is preferably 14-22, and more preferably 16-20. When the number of carbon atoms is less than 12, the molecular weight becomes too small and smoke generation increases in the hot spinning process. On the other hand, when the number of carbons exceeds 24, after pyrolysis in the yarn making hot drawing step, it becomes easy to deposit on the drawing roller, and fluff and yarn breakage increase.
When Q is a hydrocarbon group, it may be either a straight chain or a branched chain, but a straight chain is preferable from the viewpoint of reducing dynamic friction. Examples of the hydrocarbon group include an alkyl group and an alkenyl group, and an alkenyl group is preferable. The number of carbon atoms of the hydrocarbon group is preferably 14-22, and more preferably 16-20. When the number of carbon atoms is less than 12, the molecular weight becomes too small and smoke generation increases in the hot spinning process. On the other hand, when the number of carbons exceeds 24, after pyrolysis in the yarn making hot drawing step, it becomes easy to deposit on the drawing roller, and fluff and yarn breakage increase.

In the general formula (3), p and q are each independently an integer of 1 to 4, and 2 is preferable. In the cases other than 1 to 4, the antioxidant effect is low, and after thermal decomposition in the yarn forming hot drawing step, it becomes easy to deposit on the drawing roller, and fluff and yarn breakage increase.

Specific examples of the linear hydrocarbon group include n-dodecyl group, n-tridecyl group, n-tetradecyl group, n-pentadecyl group, n-hexadecyl group, oleyl group, stearyl group and the like. Specific examples of the branched hydrocarbon group include, for example, isododecyl group, isotridecyl group, isotetradecyl group, isopentadecyl group, isohexadecyl group, 2-hexyldecyl group, isostearyl group and the like. It is done. Among these, an isohexadecyl group, an oleyl group, and an isostearyl group are preferable from the viewpoint of lubricity.

Examples of the sulfur-containing ester compound (C) include thiodiethanic acid di (n-dodecyl) ester, thiodiethanic acid di (n-tridecyl) ester, thiodiethanic acid di (n-tetradecyl) ester, and thiodiethanic acid di (n-pentadecyl). Thiodietanic acid di-linear esters such as esters, thiodietanic acid di (n-hexadecyl) ester, thiodietanic acid di (oleyl) ester; thiodiethanic acid di (isododecyl) ester, thiodiethanic acid di (isotridecyl) ester, thiodiethanic acid di (iso Thiodienes such as tetradecyl) ester, thiodiethanic acid di (isopentadecyl) ester, thiodiethanic acid di (isohexadecyl) ester, thiodiethanic acid di (2-hexyldecyl) ester, thiodiethanic acid di (isostearyl) ester Acid di-branched ester; thiodipropionic acid di (n-dodecyl) ester, thiodipropionic acid di (n-tridecyl) ester, thiodipropionic acid di (n-tetradecyl) ester, thiodipropionic acid di ( n-pentadecyl) ester, thiodipropionic acid di (n-hexadecyl) ester, thiodipropionic acid di (oleyl) ester, and other thiodipropionic acid di-linear esters; thiodipropionic acid di (isododecyl) ester, thio Dipropionic acid di (isotridecyl) ester, thiodipropionic acid di (isotetradecyl) ester, thiodipropionic acid di (isopentadecyl) ester, thiodipropionic acid di (isohexadecyl) ester, thiodipropionic acid di (2-Hexyldecyl) ester, thiodipropionic acid di Thiodipropionic acid dibranched ester such as isostearyl) ester; thiodibutanoic acid di (n-dodecyl) ester, thiodibutanoic acid di (n-tridecyl) ester, thiodibutanoic acid di (n-tetradecyl) ester, thiodibutanoic acid di ( n-pentadecyl) ester, thiodibutanoic acid di (n-hexadecyl) ester, thiodibutanoic acid di (oleyl) ester, and other thiodibutanoic acid dilinear esters; thiodibutanoic acid di (isododecyl) ester, thiodibutanoic acid di (isotridecyl) ester, thiodibutane Acid di (isotetradecyl) ester, thiodibutanoic acid di (isopentadecyl) ester, thiodibutanoic acid di (isohexadecyl) ester, thiodibutanoic acid di (2-hexyldecyl) ester, thiodibutanoic acid di (isostearyl) ) Di-branched esters of thiodibutanoic acid such as esters; thiodipentanoic acid di (n-dodecyl) ester, thiodipentanoic acid di (n-tridecyl) ester, thiodipentanoic acid di (n-tetradecyl) ester, thiodipentanoic acid di (n-pentadecyl) Diesters of thiodipentanoic acid such as esters, thiodipentanoic acid di (n-hexadecyl) ester, di (oleyl) ester thiodipentanoic acid; thiodipentanoic acid di (isododecyl) ester, thiodipentanoic acid di (isotridecyl) ester, thiodipentanoic acid di (isodecyl) Tetradecyl) ester, thiodipentanoic acid di (isopentadecyl) ester, thiodipentanoic acid di (isohexadecyl) ester, thiodipentanoic acid di (2-hexyldecyl) ester, thiodipentanoic acid di (iso Thiodipentanoic acid di-branched ester such as tearyl) ester; thiodietanic acid mono (n-dodecyl) ester, thiodiethanic acid mono (n-tridecyl) ester, thiodiethanic acid mono (n-tetradecyl) ester, thiodiethanic acid mono (n-pentadecyl) ) Esters, thiodietanic acid mono (n-hexadecyl) esters, thiodietanic acid mono (oleyl) esters and other thiodietanic acid mono linear esters; thiodiethanic acid mono (isododecyl) esters, thiodiethanic acid mono (isotridecyl) esters, thiodiethanic acid mono ( Isotetradecyl) ester, thiodiethanic acid mono (isopentadecyl) ester, thiodiethanic acid mono (isohexadecyl) ester, thiodiethanic acid mono (2-hexyldecyl) ester, thiodieethane Thiodietanic acid mono-branched ester such as mono (isostearyl) ester; thiodipropionic acid mono (n-dodecyl) ester, thiodipropionic acid mono (n-tridecyl) ester, thiodipropionic acid mono (n-tetradecyl) Thiodipropionic acid mono (n-pentadecyl) ester, thiodipropionic acid mono (n-hexadecyl) ester, thiodipropionic acid mono (oleyl) ester, etc. thiodipropionic acid mono linear ester; thiodipropion Acid mono (isododecyl) ester, thiodipropionic acid mono (isotridecyl) ester, thiodipropionic acid mono (isotetradecyl) ester, thiodipropionic acid mono (isopentadecyl) ester, thiodipropionic acid mono (isohexadecyl) ) Esters, thios Thiodipropionic acid mono-branched esters such as dipropionic acid mono (2-hexyldecyl) ester and thiodipropionic acid mono (isostearyl) ester; thiodibutanoic acid mono (n-dodecyl) ester, thiodibutanoic acid mono (n- Thiodibutanoic acid mono (n-tetradecyl) ester, thiodibutanoic acid mono (n-pentadecyl) ester, thiodibutanoic acid mono (n-hexadecyl) ester, thiodibutanoic acid mono (oleyl) ester, etc. Thiodibutanoic acid mono (isododecyl) ester, thiodibutanoic acid mono (isotridecyl) ester, thiodibutanoic acid mono (isotetradecyl) ester, thiodibutanoic acid mono (isopentadecyl) ester, thiodibutanoic acid mono (isohexyl) Decyl) esters, thiodibutanoic acid mono (2-hexyldecyl) esters, thiodibutanoic acid monobranched esters such as thiodibutanoic acid mono (isostearyl) ester; thiodipentanoic acid mono (n-dodecyl) ester, thiodipentanoic acid mono (n-tridecyl) ) Thiodipentanoic acid mono (n-tetradecyl) ester, thiodipentanoic acid mono (n-pentadecyl) ester, thiodipentanoic acid mono (n-hexadecyl) ester, thiodipentanoic acid mono (oleyl) ester, etc .; Thiodipentanoic acid mono (isododecyl) ester, thiodipentanoic acid mono (isotridecyl) ester, thiodipentanoic acid mono (isotetradecyl) ester, thiodipentanoic acid mono (isopentadecyl) ester Le, Chiojipentan acid mono (isohexadecyl) esters, Chiojipentan acid mono (2-hexyl decyl) ester, Chiojipentan acid mono branched chain esters such as Chiojipentan acid mono (isostearyl) esters; and the like.

Among these, from the viewpoint of oil film strength and lubricity, thiodipropionic acid di-linear ester and thiodipropionic acid di-branched ester are preferable, and thiodipropionic acid di (isohexadecyl) ester and thiodipropion. Acid di (oleyl) ester and thiodipropionic acid di (isostearyl) ester are more preferable.
These sulfur-containing ester compounds (C) can be used alone or in combination of two or more.
There is no particular limitation on the iodine value of the sulfur-containing ester compound (C). The iodine value in the present invention refers to a value measured based on JIS K-0070.

The method for producing the sulfur-containing ester compound (C) is not particularly limited, and a known method can be employed. For example, it can be produced by performing an esterification reaction of thiodipropionic acid and an aliphatic alcohol. A specific example is a method in which an esterification reaction is carried out while removing generated water at a feed ratio of 2 to 2.5-fold moles of aliphatic alcohol with respect to thiodipropionic acid.

As esterification conditions, for example, the esterification reaction temperature is usually 120 to 250 ° C., preferably 130 to 230 ° C. The reaction time is usually 1 to 10 hours, preferably 2 to 8 hours. The reaction may be performed without a catalyst or may be performed using an esterification catalyst described later.

Specific examples of the aliphatic alcohol include, for example, n-dodecanol, n-tridecanol, n-tetradecanol, n-pentadecanol, n-hexadecanol, isododecanol, isotridecanol, isotetradecanol. Isopentadecanol, isohexadecanol, 2-hexyldecanol, oleyl group, stearyl group and the like. Among these, isohexadecyl group, oleyl group, and isostearyl group are preferable.
These aliphatic alcohols can be used alone or in combination of two or more.

Examples of esterification catalysts include Lewis acids and sulfonic acids. More specifically, examples of Lewis acids include aluminum derivatives, tin derivatives, and titanium derivatives, and examples of sulfonic acids include p-toluenesulfonic acid, metasulfonic acid, and sulfuric acid. Among these, titanium derivatives and sulfonic acids are preferable. The amount used is preferably about 0.05 to 5% by weight with respect to the total weight of the raw materials.

In the esterification reaction, the produced water may be distilled off azeotropically outside the system using a water entraining agent such as benzene, toluene, xylene, cyclohexane or the like, if necessary.
After completion of the esterification reaction, excess aliphatic alcohol is distilled off under reduced pressure or normal pressure, depending on the reaction, and conventional purification methods such as washing with water, distillation under reduced pressure, purification of adsorbents such as activated carbon are performed. Thiodipropionic acid diester can be obtained.

(Polyalkylene oxide derivative (D))
When the treatment agent of the present invention contains a polyalkylene oxide derivative (D) in addition to the above-described components, it is preferable because the convergence is improved and yarn cracking is suppressed. One or more polyalkylene oxide derivatives (D) may be used.

Examples of the polyalkylene oxide derivative (D) include a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (hereinafter sometimes referred to as polyhydroxy ester), an ester obtained by blocking at least one hydroxyl group of a polyhydroxy ester with a fatty acid, polyoxy Examples include alkylene polyhydric alcohol ether, polyoxyalkylene polyhydric alcohol fatty acid ester, polyoxyalkylene aliphatic alcohol ether, polyalkylene glycol fatty acid ester, polyalkylene glycol, polyoxyalkylene aliphatic alcohol ether fatty acid ester, and the like.

(Polyhydroxyester, ester in which at least one hydroxyl group of polyhydroxyester is blocked with fatty acid)
The polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (polyhydroxy ester) is an ester obtained by blocking at least one hydroxyl group of a polyhydroxy ester with a fatty acid, and the number of carbon atoms of the fatty acid to be blocked is preferably 6 to 24, 12 to 18 Is 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 ester in which at least one hydroxyl group of polyhydroxyester is blocked with a fatty acid include, for example, hydrogenated castor oil ethylene oxide adduct, castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide adduct monooleate, and hydrogenated 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 tris Areto 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.

The number of moles of alkylene oxide added is preferably 3 to 100, more preferably 4 to 70, and still more preferably 5 to 50. The proportion of ethylene oxide in the alkylene oxide is preferably 50 mol% or more, and more preferably 80 mol% or more.
The weight average molecular weight of the polyoxyalkylene polyhydric alcohol ether is preferably from 300 to 10,000, more preferably from 400 to 8000, and even more preferably from 500 to 5,000.

Examples of the polyoxyalkylene polyhydric alcohol ether 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 ethylene oxide adduct, sorbitol ethylene oxide propylene oxide adduct, ditrimethylolpropane ethylene oxide adduct, dipentaerythritol ethylene oxide adduct, sucrose ethylene oxide adduct, and the like, but are not limited thereto.

(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 the fatty acid 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, docosane Examples include acid, isodocosanoic acid, erucic acid, lignoceric acid, isotetracosanoic acid and the like.

The number of added moles of alkylene oxide is preferably 3 to 100, more preferably 5 to 70, and still more preferably 10 to 50. The proportion of ethylene oxide in the alkylene oxide is preferably 50 mol% or more, and more preferably 80 mol% or more.
The weight average molecular weight of the polyoxyalkylene polyhydric alcohol fatty acid ester is preferably 300 to 7000, more preferably 500 to 5000, and still more preferably 700 to 3000.

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 addition 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 Over DOO, although sucrose ethylene oxide adducts Toriraureto etc., 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.
The number of moles of alkylene oxide added is preferably 1 to 100 moles, more preferably 2 to 70 moles, and still more preferably 3 to 50 moles. 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. The weight average molecular weight of the polyalkylene glycol is preferably from 100 to 1,000, more preferably from 150 to 800, and even more preferably from 200 to 700.

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.

(Polyalkylene glycol)
The polyalkylene glycol is not particularly limited, and examples thereof include polyethylene glycol and polypropylene glycol.
The weight average molecular weight of the polyalkylene glycol is preferably 100 to 2000, more preferably 200 to 1500, and still more preferably 300 to 1000.
Examples of the polyalkylene glycol include polypropylene glycol having a weight average molecular weight of 1000, polypropylene glycol having a weight average molecular weight of 800, polyethylene glycol having a weight average molecular weight of 1000, polyethylene glycol having a weight average molecular weight of 800, and the like.

(Polyoxyalkylene aliphatic alcohol ether fatty acid ester)
Polyoxyalkylene aliphatic alcohol ether fatty acid ester is an ester of a polyoxyalkylene aliphatic alcohol ether having a structure in which an alkylene oxide such as ethylene oxide or propylene oxide is added to an aliphatic monohydric alcohol and a monovalent carboxylic acid. It is an ether ester having a structure obtained by reaction.
Examples of the polyoxyalkylene aliphatic alcohol ether fatty acid ester include POE (4) POP (4) stearyl ether laurate, POP (3) / POE (7) lauryl ether laurate, and POP (3) / POE (2) cetyl. Ether palmitate, POP (16) / POE (4) decyl ether decanoate, POE (10) lauryl ether laurate, POP (12) lauryl ether laurate, POP (32) / POE (8) decyl ether decano Ate, POP (3) / POE (7) nonylphenyl ether laurate, POP (3) / POE (7) 2-dodecyl ether laurate, POP (3) / POE (7) isotridecyl ether laurate, POP (3) / POE (7) Lauryl ether acetate lauret And POP (7) / POE (3) myristyl ether acetic acid laurate.

[Treatment agent for synthetic fibers]
The processing agent for synthetic fiber of this invention contains said fatty-acid amine salt (A) and said ester compound (B).
The weight ratio of the fatty acid amine salt (A) in the non-volatile content of the treating agent is preferably 0.001 to 60% by weight, more preferably 0.01 to 50% by weight, still more preferably 0.1 to 40% by weight, 0.5 to 30% by weight is particularly preferred, and 1 to 20% by weight is most preferred. When the weight ratio is less than 0.001% by weight, extreme pressure properties may decrease. On the other hand, when the weight ratio is more than 60% by weight, it is likely to be deposited on the drawing roller after being thermally decomposed in the yarn forming hot drawing step, and fluff and yarn breakage may increase. 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.

The total weight ratio of the fatty acid amine salt (A) and the ester compound (B) in the nonvolatile content of the treating agent is preferably 5 to 75% by weight, more preferably 10 to 65% by weight, and further 15 to 55% by weight. Preferably, 20 to 45 is particularly preferable, and 25 to 35% by weight is most preferable. When the weight ratio is less than 5% by weight, the yarn sway increases and the yarn breakage may increase. On the other hand, when the weight ratio is more than 75% by weight, it is likely to be deposited on the drawing roller after being thermally decomposed in the yarn forming hot drawing step, and fluff and yarn breakage may increase.

The weight ratio (B / A) between the fatty acid amine salt (A) and the ester compound (B) is preferably from 1/1 to 1000/1, more preferably from 3/1 to 100/1. 1 to 70/1 is more preferable, 5/1 to 30/1 is particularly preferable, and 6/1 to 15/1 is most preferable. If it is less than 1/1, the yarn sway increases and the yarn breakage may increase. On the other hand, in the case of more than 1000/1, after thermal decomposition in the yarn production hot drawing step, it tends to be deposited on the drawing roller, and fluff and yarn breakage may increase.

When the synthetic fiber treatment agent of the present invention further contains a sulfur-containing ester compound (C), the weight ratio of the sulfur-containing ester compound (C) in the nonvolatile content of the treatment agent is preferably 1 to 65% by weight. More preferably, it is -55% by weight, more preferably 10-45% by weight. When the weight ratio is less than 1% by weight, yarn swaying may increase and yarn breakage may increase. On the other hand, when the weight ratio is more than 65% by weight, it is likely to be deposited on the drawing roller after being thermally decomposed in the yarn forming hot drawing step, and fluff and yarn breakage may increase.

When the synthetic fiber treatment agent of the present invention further contains a polyalkylene oxide derivative (D), the weight proportion of the polyalkylene oxide derivative (D) in the nonvolatile content of the treatment agent is preferably 10 to 90% by weight, More preferred is ˜80% by weight, and further more preferred is 20 to 70% by weight. When the weight ratio is less than 10% by weight, the yarn sway increases and the yarn breakage may increase. On the other hand, when the weight ratio is more than 90% by weight, it tends to deposit on the drawing roller after being thermally decomposed in the yarn forming hot drawing step, and fluff and yarn breakage may increase.

(Other components (F))
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 polyalkylene oxide derivative (D). Examples of such surfactants include anionic surfactants such as metal salts or amine salts of alkyl phosphates, metal salts or amine salts of polyoxyethylene alkyl phosphates, dioctyl sulfosuccinate salts, alkane sulfonates, and fatty acid soaps. Cationic surfactants such as alkylamine salts, alkylimidazolinium salts and quaternary ammonium salts; amphoteric surfactants such as lauryl dimethyl betaine and stearyl dimethyl betaine. These surfactants may be used alone or in combination of two or more. The weight ratio of the surfactant to the non-volatile content of the treatment agent when these surfactants are contained is not particularly limited, but is preferably 0.01 to 15% by weight, more preferably 0.1 to 10% by weight. . In addition, a surfactant here means a thing with a weight average molecular weight of less than 1000.

The synthetic fiber treating agent of the present invention may further contain an antioxidant in order to impart heat resistance. Examples of the antioxidant include known ones such as phenol, thio, and phosphite. One or two or more antioxidants may be used in combination. The weight ratio of the antioxidant to the non-volatile content of the treatment agent in the case of containing the antioxidant is not particularly limited, but is preferably 0.1 to 5% by weight, and more preferably 0.1 to 3% by weight.

Further, the treating agent for synthetic fibers of the present invention may further contain a stock solution stabilizer (for example, water, ethylene glycol, propylene glycol). The weight ratio of the stock solution stabilizer in the treating agent is preferably 0.1 to 30% by weight, 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 treatment agent for synthetic fibers of the present invention is an aqueous emulsion in which nonvolatile components are emulsified in water, the concentration of nonvolatile components is preferably 5 to 35% by weight, 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 ~ 100mm ² / s.

The synthetic fiber treating agent of the present invention is used for synthetic fiber filaments or synthetic fiber short fibers, and is preferably for synthetic fiber filaments from the viewpoint of exerting the effects of the present application.

The method for producing the treatment agent for synthetic fibers of the present invention is not particularly limited, and a known method can be employed. The treating agent for synthetic fiber is produced by adding and mixing the above-mentioned respective components constituting in any or specific order.

[Method for producing synthetic fiber filament yarn and fiber structure]
The synthetic fiber filament yarn of the present invention is obtained by applying the synthetic fiber treating agent of the present invention to a raw material synthetic fiber filament yarn. 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. There is no restriction | limiting in particular as a process to provide, 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 stretching, polyester and nylon are assumed to be 210 to 260 ° C. for industrial materials and 110 to 180 ° C. 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 non-volatile content of the synthetic fiber treatment agent is preferably 0.05 to 5% by weight, more preferably 0.1 to 3% by weight, and more preferably 0.1 to 2% by weight based on the raw 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 synthetic fiber filament yarns such as polyester fiber, polyamide fiber, and polyolefin fiber. 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 above synthetic fiber filament yarn and / or 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. In addition, the use of the fiber structure includes industrial materials such as seat belts, tire cords, 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.

Hereinafter, the present invention will be described by way of examples. The present invention is not limited to the examples described herein. In the text and tables, “%” means “% by weight”.

[Examples 1 to 13, Comparative Examples 1 to 12]
The components described in Tables 1 to 3 were mixed and stirred until uniform to prepare a treating agent. The prepared treating agent was gradually added to ion-exchanged water with stirring. After the addition, the mixture was stirred for 60 minutes until it became uniform to prepare a treatment agent (O / W emulsion state) having a nonvolatile content concentration of 18% by weight.

The components shown in Tables 1 to 3 other than the fatty acid amine salt (A) are as follows. The fatty acid amine salt (A) is shown in Table 4.
B1-1 2-decyltetradecanoyl erucinate B1-2 2-octyldodecyl stearate B1-3 isooctyl palmitate B1-4 isooctyl stearate B2-1 glycerol trioleate B2-2 trimethylolpropane trilaurate B2 ′ -3 Sorbitan trioleate B2'-4 Glycerol dioleate B2'-5 Trimethylolpropane dilaurate B2'-6 Sorbitan dioleate B2'-7 Glycerol monooleate B2'-8 Trimethylolpropane monolaurate B2'- 9 Sorbitan monooleate C-1 Dioleyl thiodipropionate C-2 Diisostearyl thiodipropionate D-1 POE (25) hardened castor oil ether D-2 POE (25) hardened castor oil ether geo Benzoate D-3 POE (20) sorbitan trioleate D-4 POE / POP stearyl ether (molecular weight 1600, PO: EO = 1: 1)
D-5 POE (7) Isotridecyl ether D-6 Polypropylene glycol (molecular weight 1000)
D-7 POE (4) POP (4) Stearyl ether Laurate D-8 Polyethylene glycol monooleate F-1 Alkanesulfonate Na salt F-2 Dioctylsulfosuccinate Na salt F-3 POE (5) Oleyl phosphate Na salt F -4 Isocetyl phosphate Na salt F-5 Oleic acid Diethanolamide F-6 1,3,5 Tris (4-tBu-3-hydroxy-2,6dimethylbenzyl) isocyanurate X-1 Oleic acid diethanolamine salt X-2 Oleic acid potassium salt X-3 Isostearic acid ammonium salt X-4 Isostearic acid triethanolamine salt In this specification, POE represents a polyoxyethylene group and POP represents a polyoxypropylene group. For example, POE (7) indicates a polyoxyethylene group having an average addition mole number of 7 moles.

(Swing, break, fluff)
In the melt spinning step, the treating agent prepared above was applied to the yarn obtained by melt spinning and cooling and solidifying the polyester polymer so that the applied amount of the nonvolatile content was 0.6% by weight. The applying method was carried out using a roll oiling method.
Eight yarns to which a treatment agent is applied are wound around a hot roller at an interval of 8 to 10 mm, and are continuously stretched without being wound once, and are then stretched 5.1 times through a hot roller at 250 ° C. Drawing was performed to obtain a polyethylene terephthalate multifilament of 1100 dtex and 96 filaments. The drawn and heat-set yarns are wound up, but the yarns are interlaced immediately before the winding to converge the filaments. Interlacing was performed by blowing a high pressure fluid, such as high pressure air, through a nozzle. Fluff and yarn breakage were evaluated under the following conditions.
Yarn sway: Check the running state of the rotating hot roller after production of 1 ton of raw yarn for each treatment agent. If the average value of the sway width is less than 3 mm, ◎, and if it is 3 mm or more and less than 5 mm ○ and 5 mm or more were marked with ×. ◎ and ○ were accepted.
Breaking yarn: Each treatment agent was evaluated based on the number of yarn breaks per ton of the raw yarn. The case where it was less than 1 was marked with ◎, the case where it was 1 or more and less than 2 was marked with ○, and the case where it was 2 or more was marked with ×. ◎ and ○ were accepted.
Fluff: Each treatment-agent-attached yarn was checked with a fluff counter for the number of fluffs, and when the value per million m was less than 1, ◎, when less than 2, and 2 or more, x. ◎ and ○ were accepted.

(Roller dirt)
For the 1100 dtex, 96-filament non-oiled polyester filament (raw yarn), the treatment agent prepared above was applied using a guide oiling method so that the application amount of non-volatile content was 0.6% by weight. The sample was left for 48 hours in an atmosphere of 25 ° C. and a humidity of 65% to adjust the humidity.
The conditioned yarn is brought into contact with a 250 ° C. friction body (satin chrome plating, diameter 5 cm) with a running yarn friction tester (manufactured by Toray Engineering Co., Ltd.), and the yarn is loaded at a load of 500 g and a running speed of 200 m / min. Was run for 24 hours, and the dirt adhered to the friction body was determined under the following conditions to evaluate the roller dirt. The following ◎ and ○ were regarded as acceptable.
A: Talized product is not recognized.
○: A very small amount of a tar product is observed.
X: Remarkable tar product is recognized.

As can be seen from Tables 1 to 3, Examples 1 to 13 of the present invention include the fatty acid amine salt (A) represented by the general formula (1) and the ester compound (B), so that the yarn fluctuates and breaks. And the occurrence of fluff is significantly reduced. Furthermore, there is little roller dirt, it is excellent in heat resistance, and the production environment is not deteriorated.
On the other hand, since Comparative Examples 1 and 2 do not contain the fatty acid amine salt represented by the general formula (1), the yarn shaking, roller dirt, yarn breakage evaluation, fluff evaluation, and roller evaluation are inferior, and all these evaluations are satisfied. There is nothing you can do. Even if it is a fatty acid salt, if it is not a fatty acid amine salt represented by the general formula (1), as in Comparative Examples 3 to 12, the yarn swinging, roller dirt, yarn breakage evaluation, and fluff evaluation are inferior, None of these evaluations can be satisfied.

The synthetic fiber treatment agent of the present invention is suitable for industrial fiber materials such as seat belts, tire cords, tarpaulins, airbags, fish nets, ropes, and synthetic fiber filament yarns used for clothing such as fabrics and knitting.

Claims (6)

A synthetic fiber treatment agent applied in the spinning process,
A fatty acid amine salt (A) represented by the following general formula (1) and an ester compound (B) which is a polyhydric alcohol fatty acid ester compound (B2);
The alcohol constituting the compound (B2) is trivalent, the compound (B2) has three ester bonds in the molecule,
The total weight of the fatty acid amine salt (A) and the ester compound (B) is 15% by weight or more and 75% by weight or less based on the nonvolatile content of the treatment agent;
The processing agent for synthetic fibers whose weight ratio (B / A) of the said fatty-acid amine salt (A) and the said ester compound (B) is 1/1 or more and 1000/1 or less.

(Wherein R ¹ represents an alkyl group or alkenyl group having 4 to 30 carbon atoms, R ² represents an alkyl group or alkenyl group having 6 to 24 carbon atoms, and AO represents an oxyalkylene group having 2 or 3 carbon atoms) M and n represent the average added mole number of AO, and m + n is a number satisfying 1 to 25.) The processing agent for synthetic fibers according to claim 1, wherein the alcohol constituting the compound (B2) is at least one selected from glycerin and trimethylolpropane. The processing agent for synthetic fibers according to claim 1 or 2, further comprising a sulfur-containing ester compound (C) represented by the following general formula (3).
R ⁵ OOC— (CH ₂ ) _q —S— (CH ₂ ) _p —COOQ (3)
(In the formula, R ⁵ is a hydrocarbon group having 12 to 24 carbon atoms. Q is a hydrogen atom or a hydrocarbon having 12 to 24 carbon atoms.) A synthetic fiber filament yarn obtained by applying the treatment agent according to any one of claims 1 to 3 to a raw material synthetic fiber filament yarn. A method for producing a synthetic fiber filament yarn, comprising a step of applying the treatment agent according to any one of claims 1 to 4 to a raw material synthetic fiber filament yarn. A fiber structure comprising the synthetic fiber filament yarn according to claim 4 and / or the synthetic fiber filament yarn obtained by the production method according to claim 5.