JP2019002093A - Treatment agent for synthetic fiber and application thereof - Google Patents

Abstract

To provide a treatment agent for synthetic fiber for providing excellent yarn quality by maintaining good spinning property in increasing production speed of a synthetic fiber, a manufacturing method of a synthetic fiber filament yarn using the treatment agent, and a fiber structure containing the synthetic fiber filament yarn obtained by the manufacturing method.SOLUTION: There is provided a treatment agent for synthetic fiber containing a polyoxyalkylene aliphatic alkyl ether component (A) and a polyalkylene glycol aliphatic acid ester component (B), and having weight percentage of the component (A) in a nonvolatile content of the treatment agent of 35 to 70 wt.%, weight percentage of the component (B) of 5 to 25 wt.%, kinetic viscosity at 30°C of an aqueous liquid with concentration of the nonvolatile content of the treatment agent of 40 to 70 wt.% of 50 to 100 mm/s, and kinetic viscosity at 50°C of 15 to 45 mm/s.SELECTED DRAWING: None

Description

  The present invention relates to a treating agent for synthetic fibers and its use. The present invention relates to a treatment agent for synthetic fibers and use thereof. More specifically, a synthetic fiber treatment agent used when producing a synthetic fiber multifilament yarn, a synthetic fiber filament yarn provided with the treatment agent, and production of a synthetic fiber filament yarn using the treatment agent It is about the method.

  Synthetic fibers are widely used for clothing and industrial materials. In recent years, in order to improve the productivity of synthetic fibers, production facilities have been accelerated. As the production speed increases, the time during which the spun fiber is heat set is shortened, and thus the heat setting temperature is often increased. However, since the heat set temperature is increased, the heat treatment of the fiber treatment agent that has fallen off to the heater causes the fluff to increase. Therefore, the heat set temperature must be increased to the minimum necessary. In order to increase the production speed while maintaining excellent yarn quality, it is necessary to efficiently transfer heat from the godet roller to the spun fiber without increasing the heat setting temperature.

In the production process of synthetic fibers such as polyester and polyamide, in many cases, the spinning oil is supplied in a state diluted with water to 5 to 15%. This water is vaporized on the heat set and does not remain on the synthetic fiber, but at this time, a large amount of heat is lost due to the heat of vaporization of the water, so by increasing the concentration of this synthetic fiber treatment agent, If the amount of heat used for vaporization heat can be reduced, heat can be efficiently transferred from the godet roller to the spun fiber.
However, when the aqueous liquid concentration of the conventional treating agent for synthetic fibers is increased, the quality of the obtained yarn is lowered.

Chinese Patent Application No. 1060665527

  An object of the present invention is to produce a synthetic fiber treating agent capable of obtaining excellent yarn quality while maintaining good yarn forming performance at a high synthetic fiber production rate, and production of a synthetic fiber filament yarn using the treating agent. It is to provide a fiber structure comprising a synthetic fiber filament yarn obtained by the method and the production method.

As a result of intensive research, the inventors of the present invention are processing agents for synthetic fibers containing a polyoxyalkylene aliphatic alkyl ether component (A) and a polyalkylene glycol fatty acid ester component (B), An aqueous liquid in which the weight ratio of the component (A) is 35 to 70% by weight, the weight ratio of the component (B) is 5 to 25% by weight, and the non-volatile content of the treatment agent is 40 to 70% by weight. It was found that the above-mentioned problems can be solved if the treatment agent for synthetic fibers has a kinematic viscosity at 30 ° C. of 50 to 100 mm ² / s, and the present invention has been achieved.

It is preferable that the kinematic viscosity of the aqueous liquid having a non-volatile content of the treatment agent of 40 to 70% by weight at 50 ° C. is 15 to 45 mm ² / s.
It is preferable that the transmittance of the aqueous liquid having a nonvolatile content of the treatment agent of 40 to 70% by weight is 98% or more and 100% or less.
It is preferable that the following component (C), the following component (D) and the following component (E) are further included.
Component (C): ester compound (C1) having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded, ester compound (C2) having a structure in which an aliphatic polyhydric alcohol and a fatty acid are ester-bonded, aliphatic one An ester compound (C3) having a structure in which a monohydric alcohol and an aliphatic polycarboxylic acid are ester-bonded, an aromatic ester compound (C4) having an aromatic ring in the molecule, a sulfur-containing ester compound (C5), a mineral oil (C6 ) And a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7) (D): an alkylene oxide adduct component (E) having a weight average molecular weight of 100 to 3000: aromatic alcohol, fatty acid salt, At least one selected from an aliphatic phosphate, an aliphatic sulfonate, and an aliphatic amide compound;

5 to 20% by weight of the component (C) in the nonvolatile content of the treatment agent, 5 to 30% by weight of the component (D), and 1 to 20% by weight of the component (E). % Is preferable.
Each aqueous liquid having a non-volatile content of the treatment agent of 80% by weight and 90% by weight is preferable when the kinematic viscosity at 30 ° C. exhibits 50 to 100 mm ² / s.

The synthetic fiber filament yarn of the present invention is formed by adhering the above-mentioned synthetic fiber treating agent to the (raw material) synthetic fiber filament yarn.
The method for producing a synthetic fiber filament yarn of the present invention includes a step of applying an aqueous liquid of the synthetic fiber treating agent to the (raw material) synthetic fiber filament yarn.

  When the synthetic fiber treating agent of the present invention is used, a synthetic fiber filament yarn having excellent yarn quality can be obtained while maintaining a good yarn forming property at a high production rate of synthetic fiber.

  The synthetic fiber treating agent of the present invention will be described in detail below.

[Treatment agent for synthetic fibers]
In the treatment agent for synthetic fibers of the present invention, an aqueous liquid having a non-volatile content of the treatment agent of 40 to 70% by weight exhibits a kinematic viscosity at 30 ° C. of 50 to 100 mm ² / s.
Here, the aqueous liquid having a non-volatile content of the treatment agent of 40% by weight means an aqueous liquid comprising 60 parts by weight of water with respect to 40 parts by weight of the non-volatile content of the treatment agent. In addition, the non-volatile content in the present specification means 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.
An aqueous liquid having a non-volatile content of the treatment agent of 80% by weight is preferable when the kinematic viscosity at 30 ° C. exhibits 50 to 100 mm ² / s, and an aqueous liquid having a non-volatile content of the treatment agent of 90% by weight is preferably 30%. More preferably, the kinematic viscosity at 50 ° C. indicates 50 to 100 mm ² / s.
When the kinematic viscosity at 30 ° C. of an aqueous liquid having a nonvolatile content of the treatment agent of 40 to 70% by weight is less than 50 mm ² / s, the yarn quality is deteriorated due to insufficient convergence, and when it exceeds 100 mm ² / s. , Yarn quality deteriorates due to insufficient wettability.
The treatment agent for synthetic fibers of the present invention preferably has an aqueous liquid having a non-volatile content of 70 to 90% by weight and a kinematic viscosity at 30 ° C. of non-volatile content of 50 to 100 mm ² / s. more preferably when showing the 90 mm ² / s, particularly preferably shows a 50 to 80 mm ² / s.

After the treatment agent aqueous liquid is attached to the running yarn, the concentration of the treatment agent aqueous solution attached to the heating roller gradually increases in the process in which the running yarn passes through the heating roller. If each non-volatile component has a concentration of 70 to 90% by weight and the kinematic viscosity of the nonvolatile component is high, the friction between the yarn in contact with the heating roller and the heating roller will be high, which will inhibit or excel in maintaining good spinning properties. Therefore, it is particularly preferable that the concentration of the non-volatile content of the treatment agent is 70 to 90% by weight and the kinematic viscosity of the non-volatile content is 50 to 80 mm ² / s.

In the treatment agent for synthetic fibers of the present invention, an aqueous liquid having a non-volatile content of the treatment agent of 40 to 70% by weight preferably exhibits a kinematic viscosity at 50 ° C. of 15 to 45 mm ² / s.
An aqueous liquid having a non-volatile content of the treatment agent of 80% by weight is preferably a kinematic viscosity at 50 ° C. of 15 to 45 mm ² / s, and an aqueous liquid having a non-volatile content of the treatment agent of 90% by weight is preferably 50%. It is more preferable that the kinematic viscosity at 15 ° C. is 15 to 45 mm ² / s.
When the kinematic viscosity at 50 ° C. of an aqueous liquid having a nonvolatile content of the treatment agent of 40 to 70% by weight is less than 15 mm ² / s, the yarn quality may be deteriorated due to insufficient convergence, and 45 mm ² / s. If it exceeds 1, the wettability will be insufficient, and the yarn quality may deteriorate.

  In the treatment agent for synthetic fibers of the present invention, the transmittance of an aqueous liquid having a non-volatile content of the treatment agent of 40 to 70% by weight is preferably 98.0% or more and 100% or less, and 98.5% or more and 100% or less. Is more preferably 99.0% to 100%, and particularly preferably 99.5% to 100%. If it is less than 98.0%, the stability may be insufficient, and it may not be possible to lubricate uniformly, and the yarn quality may deteriorate. In addition, the measuring method of the transmittance | permeability is described in an Example.

  The processing agent for synthetic fibers of the present invention essentially contains a polyoxyalkylene aliphatic alkyl ether component (A) and a polyalkylene glycol fatty acid ester component (B).

[Polyoxyalkylene aliphatic alkyl ether component (A)]
The polyoxyalkylene aliphatic alkyl ether component (A) (hereinafter, the polyoxyalkylene aliphatic alkyl ether component (A) is sometimes referred to as component (A)) adds an alkylene oxide to an aliphatic monohydric alcohol. It is a component having the structure.
The polyoxyalkylene aliphatic alkyl ether component (A) is essential in the synthetic fiber treating agent of the present invention and plays a role of improving the transmittance.
From the viewpoint of improving the yarn quality, the aliphatic alkyl group constituting the component (A) preferably has 1 to 22 carbon atoms, more preferably 4 to 20 carbon atoms, and still more preferably 6 to 18 carbon atoms.
The aliphatic alkyl group constituting the component (A) may be linear or branched. From the viewpoint of improving the yarn quality by improving the uniformity of adhesion of the treatment agent to the yarn by improving the transmittance. Branched chains are preferred.

  Examples of the aliphatic monohydric alcohol include butanol, pentyl alcohol, hexyl alcohol, heptyl alcohol, octyl alcohol, nonyl alcohol, decyl alcohol, undecyl alcohol, dodecyl alcohol, tridecyl alcohol, cetyl alcohol, stearyl alcohol, and nonadecyl alcohol. , Isooctyl alcohol, isododecyl alcohol, isotridecyl alcohol, and the like. Among them, from the viewpoint of improving the uniformity of adhesion of the treatment agent to the yarn by improving the transmittance and improving the yarn quality. Octyl alcohol, isododecyl alcohol and isotridecyl alcohol are preferred. As said aliphatic monohydric alcohol, only 1 type may be sufficient and a 2 or more types of mixture may be sufficient.

Examples of the alkylene oxide include ethylene oxide and propylene oxide.
Examples of the structure in which an alkylene oxide is added to an aliphatic monohydric alcohol include ethylene oxide, propylene oxide, a random adduct or a block adduct of propylene oxide.
The number of moles of alkylene oxide added is preferably from 1 to 20 moles, more preferably from 2 to 17 moles, and even more preferably from 3 to 14 moles, from the viewpoint of exerting the effects of the present invention. If the number of added moles of alkylene oxide is less than 3, the aqueous liquid may be suspended, so that the uniform adhesion may be reduced and the yarn quality may be deteriorated. If it exceeds 14 moles, not only the aqueous liquid is suspended. There is a possibility that friction will increase and a lot of fluff and breakage may occur.

Specific examples of the component (A) include PO (3) / EO (8) dodecyl ether, EO (7) secondary tridecyl ether, EO (7) secondary dodecyl ether, EO (9) secondary dodecyl ether, PO (6 ) / EO (7) secondary dodecyl ether, PO (8) / EO (8) stearyl ether, PO (8) / EO (10) oleyl ether, PO (1) / EO (2) 2-ethylhexyl ether, alkyl alcohol While compounds that EO7 mols after PO6 mols in _{(C 12-14)} and the like, but it is not limited thereto. Among these, from the viewpoint of exerting the effect of the present application, PO (3) / EO (8) dodecyl ether, EO (7) secondary tridecyl ether, EO (7) secondary dodecyl ether, EO (9) secondary dodecyl ether, PO (6) / EO (7) secondary dodecyl ether, PO (8) / EO (8) stearyl ether, PO (1) / EO (2) 2-ethylhexyl ether, PO6 mole addition to alkyl alcohol (C _12-14 ) And then EO 7 mol added compound is preferred, PO (3) / EO (8) dodecyl ether, EO (7) secondary tridecyl ether, EO (9) secondary dodecyl ether, PO (6) / EO (7) secondary dodecyl Ether, PO (1) / EO (2) 2-ethylhexyl ether , The compound EO7 mols after PO6 mol appended to an alkyl alcohol _{(C 12-14)} is more preferable.
The EO (8) means polyoxyethylene (8 mol), the PO (3) means polyoxypropylene (3 mol), and the PO (3) / EO (8) means Means random addition of polyoxypropylene (3 mol) and polyoxyethylene (8 mol).

[Polyalkylene glycol fatty acid ester component (B)]
The polyalkylene glycol fatty acid ester component (B) is a component having a structure in which polyalkylene glycol and a fatty acid are ester-bonded. The polyalkylene glycol fatty acid ester component (B) plays a role of suppressing the occurrence of fluff in the synthetic fiber treatment agent of the present invention.

  Examples of the component (B) include polyethylene glycol monolaurate, polyethylene glycol dilaurate, polyethylene glycol monopalmitate, polyethylene glycol dipalmitate, polyethylene glycol monooleate, polyethylene glycol dioleate, polyethylene glycol monostearate, polyethylene glycol Examples include, but are not limited to, distearate, polyethylene polypropylene glycol monolaurate, polyethylene polypropylene glycol dilaurate, polyethylene polypropylene glycol monooleate, and polyethylene polypropylene glycol dioleate. Among these, from the viewpoint of exerting the effect of the present application, polyethylene glycol monooleate, polyethylene glycol dioleate, polyethylene glycol monostearate, and polyethylene glycol distearate are preferable, and polyethylene glycol monooleate and polyethylene glycol dioleate are preferable. More preferred.

  The polyalkylene glycol constituting the component (B) is preferably a molecular weight of 100 to 2000, more preferably 200 to 1500, still more preferably 300 to 1000, and most preferably 400 to 800 from the viewpoint of exerting the effect of the present application. preferable. If the molecular weight of the polyalkylene glycol is less than 100, it may not be possible to reduce the occurrence of yarn breakage, and if it exceeds 2000, there may be a lot of fluff and yarn breakage.

[Component (C)]
When the synthetic fiber treating agent of the present invention contains the component (C), the yarn quality is improved by improving the smoothness, which is preferable.
Component (C) is an ester compound (C1) having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded, an ester compound (C2) having a structure in which an aliphatic polyhydric alcohol and a fatty acid are ester-bonded, aliphatic An ester compound (C3) having a structure in which a monohydric alcohol and an aliphatic polycarboxylic acid are ester-bonded, an aromatic ester compound (C4) having an aromatic ring in the molecule, a sulfur-containing ester compound (C5), mineral oil ( C6) and a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7).

(Compound (C1))
The ester compound (C1) having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded is an ester of a monovalent fatty acid having 4 to 24 carbon atoms and a monovalent aliphatic alcohol having 4 to 24 carbon atoms.
Examples of fatty acids having 4 to 24 carbon atoms 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, margaric acid, stearic acid, isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linolenic acid, arachidic acid, isoeicosaic acid, gadoleic acid, eicosenoic acid, docosanoic acid, isodocosanoic acid, erucic acid Tetracosanoic acid, isotetracosanoic acid, nervonic acid, serotic acid, montanic acid, melicic acid and the like.
Among these, from the viewpoint that the effect of the present application is easily exhibited, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, myristic acid, pentadecanoic acid, palmitic acid, and the like, saturated fatty acids having 16 or less carbon atoms, palmitoleic acid, Unsaturated fatty acids such as margaric acid, oleic acid, linoleic acid, linolenic acid, elaidic acid, vaccenic acid, gadoleic acid, erucic acid, nervonic acid, etc., branched chains such as isocetyl acid, isostearic acid, isoeicosaic acid, isodocosanoic acid, isotetracosanoic acid Fatty acids are preferred.

  Examples of monohydric aliphatic alcohols having 4 to 24 carbon atoms include butyl alcohol, pentanol, hexanol, heptanol, 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, gadrel alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol , Lignocerinyl alcohol, isotetracosanyl alcohol, nerbonyl alcohol, serotinyl alcohol, Monta Alcohol, Meri sheet alkenyl 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 from the viewpoint of easily obtaining the effect of the present application , Elidyl alcohol, bacenyl alcohol, gadrel alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol, lignocerinyl alcohol, isotetradocosanyl alcohol Nerbonyl alcohol is preferred, myristol alcohol, palmitoleyl alcohol, oleyl alcohol, Zyl alcohol, bacenyl alcohol, gadreyl alcohol, eicosenoyl alcohol, ercanyl alcohol, and nerbonyl alcohol are more preferable, and oleyl alcohol, elaidyl alcohol, bacenyl alcohol, gadrel alcohol, eicosenoyl alcohol, and elca Nyl alcohol is more preferred.

(Compound (C2))
Compound (C2) is an ester compound having a structure in which an aliphatic polyhydric alcohol and a fatty acid are ester-bonded.
Compound (C2) is an aliphatic dihydric alcohol having 2 to 6 carbon atoms, an aliphatic trivalent alcohol having 3 or 4 carbon atoms, an aliphatic tetravalent alcohol having 5 carbon atoms, and a fatty acid having 4 to 24 carbon atoms. And the ester. Moreover, it is a compound which does not have a polyoxyalkylene group in a molecule | numerator.

  The polyhydric alcohol constituting the compound (C2) is preferably an aliphatic trihydric alcohol having 3 or 4 carbon atoms and / or an aliphatic tetrahydric alcohol having 5 carbon atoms from the viewpoint of yarn production.

Examples of the aliphatic dihydric alcohol having 2 to 6 carbon atoms 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 and the like.
Examples of the aliphatic trihydric alcohol having 3 or 4 carbon atoms include glycerin and trimethylolpropane.
Examples of the aliphatic tetrahydric alcohol having 5 carbon atoms include pentaerythritol.

  The fatty acid (aliphatic monovalent carboxylic acid) constituting the compound (C2) 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 to impair smoothness. The number of carbon atoms of the fatty acid is preferably 8 to 24, more preferably 10 to 20, and even more preferably 12 to 18 from the viewpoint that oligomer precipitation is suppressed by improving the solubility of the oligomer in the treating agent. 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.

  As the fatty acid, the same fatty acids as those mentioned for the compound (C1) can be used.

  The acid value of the compound (C2) is preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. When the acid value of the compound (C2) is more than 10, a large amount of smoke or odor may be generated during the heat treatment, which may deteriorate the use environment. The acid value in the present invention was measured based on JIS K-0070.

  0.1-25 are preferable, as for the hydroxyl value of a compound (C2), 0.5-23 are more preferable, and 1.0-20 are more preferable. When the hydroxyl value of the compound (C2) is less than 0.1, it may be difficult to obtain an ester. On the other hand, when the hydroxyl value of the compound (C2) is more than 25, the oligomer precipitation suppressing effect due to the improvement of the solubility of the oligomer in the treating agent may be insufficient. The hydroxyl value in the present invention was measured based on JIS K-0070.

  The weight average molecular weight of the compound (C2) is 500 to 1500, preferably 500 to 1200, and more preferably 500 to 700. When the weight average molecular weight is less than 500, oil film strength is insufficient, fluff increases, and smoke generation during heat treatment increases. On the other hand, when the weight average molecular weight exceeds 1500, smoothness is insufficient and fluff frequently occurs. 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 compound (C2) include trimethylolpropane tricaprylate, trimethylolpropane tricaprinate, trimethylolpropane trilaurate, trimethylolpropane trioleate, trimethylolpropane (laurate, myristylate, palmitate), trimethylolpropane. (Laurate, myristylate, oleate), trimethylolpropane (tripalmyl fatty acid ester), trimethylolpropane (tricoconut fatty acid ester), trimethylolpropane dicaprylate, trimethylolpropane dicaprinate, trimethylolpropane dilaurate, trimethylolpropane dilaurate Oleate, trimethylolpropane (laurate, myristylate), trimethylolpropane (laurate, orange) Ate), trimethylolpropane (myristylate, oleate), trimethylolpropane (dipalm fatty acid ester), trimethylolpropane (dicoconut fatty acid ester), coconut oil, rapeseed oil, palm oil, glycerin trilaurate, glycerin trioleate, glycerin trioleate Isostearate, glycerol dioleate, glycerol monolaurate, diglycerol dioleate, sorbitan trioleate, sorbitan (laurate, myristylate, oleate), sorbitan dilaurate, sorbitan monooleate, pentaerythritol tetracaprylate, pentaerythritol tetra Caprinate, pentaerythritol tetralaurate, erythritol tetralaurate, pentaerythritol (tetrapalm Fatty acid esters), pentaerythritol (Tetorayashi fatty acid ester), erythritol trioleate, pentaerythritol dipalmitate, include 1,6-hexanediol di oleate.

  Compound (C2) may be a compound synthesized by a known method using a commercially available aliphatic polyhydric alcohol and fatty acid. In addition, natural esters obtained from nature such as natural fruits, seeds or flowers, which satisfy the constitution of compound (C2), can be used as they are, or natural esters can be purified by known methods as necessary. Alternatively, a further refined ester may be used which is separated and re-purified by a known method using a difference in melting point.

(Compound (C3))
The compound (C3) is a compound having a structure in which an aliphatic monohydric alcohol and an aliphatic polyvalent carboxylic acid are ester-bonded.

  The compound (C3) is an ester of an aliphatic divalent carboxylic acid having 2 to 6 carbon atoms and an aliphatic alcohol having 4 to 24 carbon atoms, and does not have a polyoxyalkylene group in the molecule. 1 type (s) or 2 or more types can be used for a compound (C3).

  The aliphatic alcohol having 4 to 24 carbon atoms constituting the compound (C3) is not particularly limited, and one kind or two or more kinds can be used. The aliphatic alcohol having 4 to 24 carbon atoms 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 aliphatic alcohol having 4 to 24 carbon atoms is preferably 8 to 24, more preferably 14 to 24, and still more preferably 18 to 22 from the viewpoint of smoothness and oil film strength. 1 type (s) or 2 or more types may be used for a C4-C24 aliphatic alcohol, and a saturated aliphatic monohydric alcohol and an unsaturated aliphatic monohydric alcohol may be used together.

  As said aliphatic alcohol, the same thing as what was mentioned by the compound (C1) can be used.

The aliphatic polyvalent carboxylic acid constituting the compound (C3) 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 And acid, sebacic acid and the like. 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 compound (C3) include dioctyl adipate, dilauryl adipate, dioleyl adipate, diisocetyl adipate, dioctyl sebacate, dilauryl sebacate, dioleyl sebacate, diisocetyl sebacate and the like.

  The compound (C3) is a compound having two or more ester bonds in the molecule. There is no limitation in particular about the iodine value of a compound (C3).

  The weight average molecular weight of the compound (C3) is 500 to 1500, preferably 500 to 1200, and more preferably 500 to 700. When the weight average molecular weight is less than 500, oil film strength is insufficient, fluff increases, and smoke generation during heat treatment increases. On the other hand, when the weight average molecular weight is more than 1500, the melting point becomes high, causing scum in the weaving or knitting process, resulting in poor quality.

  Compound (C3) can be synthesized and obtained by a known method using a commercially available aliphatic monohydric alcohol and aliphatic polyvalent carboxylic acid.

(Compound (C4))
Compound (C4) is an ester compound having at least one aromatic ring in the molecule. Specifically, an ester compound (C4-1) having a structure in which an aromatic carboxylic acid and an alcohol are ester-bonded and an ester compound (C4-2) having a structure in which an aromatic alcohol and a carboxylic acid are ester-bonded are mentioned. Can do. Moreover, a compound (C4) is a compound which does not have a polyoxyalkylene group in a molecule | numerator. 1 type (s) or 2 or more types can be used for a compound (C4).

The aromatic carboxylic acid constituting the ester compound (C4-1) 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 (C4-1) 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 compound (C2) and the aromatic polyhydric alcohol described in the ester compound (C4-2).

The aromatic alcohol which comprises ester compound (C4-2) 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 (C4-2) 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, arachidic acid, isoicosanoic acid, gadoleic acid, 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 (C3), the aromatic polyvalent carboxylic acid described in the ester compound (C4-1), and the like.

(Compound (C5))
The compound (C5) is a sulfur-containing ester compound and 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.

(Mineral oil (C6))
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.

(Polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7))
The polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7) is an ester compound having a structure in which a polyoxyalkylene group-containing hydroxy fatty acid and a polyhydric alcohol are ester-bonded.
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 polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7) 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. Can do.

  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.
Examples of the polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7) include hardened castor oil ethylene oxide adduct, castor oil ethylene oxide adduct, and the like.

[Component (D)]
The synthetic fiber treating agent of the present invention preferably contains the component (D) in order to prevent yarn damage and improve yarn quality by improving oil film strength.
Component (D) is an alkylene oxide adduct having a weight average molecular weight of 100 to 3,000. Component (D) does not contain an alkyl group. The molecular weight of the alkylene oxide adduct is preferably 100 to 3000, more preferably 500 to 2500, and still more preferably 1000 to 2000 from the viewpoint of exhibiting the effects of the present invention. If the molecular weight of the alkylene oxide is less than 1000, the spinning performance may be deteriorated due to insufficient oil film strength. If the molecular weight exceeds 2000, the friction becomes too high and the spinning performance may be deteriorated.
The component (D) may be either a polyethylene oxide / polypropylene oxide block adduct or a random adduct, but an adduct having a higher polyethylene oxide ratio than the polypropylene oxide ratio is preferred from the viewpoint of exerting the effect of the present application.

  The polypropylene oxide / polyethylene oxide ratio (PO / EO ratio) is preferably 75/25 to 10/90, more preferably 50/50 to 10/90, still more preferably 40/60 to 10/90, and 25/75 to 10/90 is particularly preferred. In a component having a high polyethylene oxide ratio, since the hydrophilicity is strong, the appearance of the treatment agent becomes transparent, and the uniformity of adhesion of the treatment agent to the yarn is improved. Examples of the component (D) include (PO / EO = 25/75, molecular weight 1500).

[Component (E)]
The treatment agent for synthetic fibers of the present invention preferably contains the component (E) because the antistatic property is improved. Component (E) is at least one selected from aromatic alcohols, fatty acid salts, aliphatic phosphates, aliphatic sulfonates and aliphatic amide compounds.

  Aromatic alcohols include benzyl alcohol, phenol, 2-phenylethyl alcohol, 2-phenoxyethanol, cinnamic alcohol, bis (2-hydroxyethyl) terephthalate, bisphenol A, bisphenol Z, 1,3,5-trihydroxymethylbenzene From the viewpoint of exerting the effects of the present application, benzyl alcohol is preferable.

Examples of the fatty acid salt include fatty acid salts such as propionic acid, hexanoic acid, octanoic acid, octylic acid, decanoic acid, and lauric acid, and potassium oleate is preferable from the viewpoint of exerting the effect of the present application.
Examples of the aliphatic phosphate include aliphatic phosphates such as potassium polyoxyethylene lauryl phosphate and potassium polyoxyethylene oleyl phosphate. From the viewpoint of exerting the effect of the present application, polyoxyethylene isododecyl phosphate potassium salt, Tridecyl phosphate potassium salt is preferred.

Examples of the aliphatic sulfonate include aliphatic decane sulfonate, sodium dodecane sulfonate, lithium tetradecane sulfonate, potassium hexadecane sulfonate, sodium butylbenzene sulfonate, potassium tetradecylbenzene sulfonate, potassium octadecylbenzene sulfonate, and the like. Examples thereof include sulfonates, and sodium alkanesulfonate is preferable from the viewpoint of exerting the effect of the present application.
Examples of the aliphatic amide compound include octane amide, nonane amide, decanamide, undecanamide, dodecanamide, tridecanamide, tetradecanamide, hexadecanamide, octadecanamide, N-methylol stearylamide, etc. from the viewpoint of exerting the effect of the present application. Polyoxyethylene laurylamide is preferred.

The weight ratio of the component (A) in the nonvolatile content of the treatment agent is 35 to 70% by weight, preferably 40 to 65% by weight, and more preferably 40 to 55% by weight. If it is less than 35% by weight, the permeability of the aqueous liquid of the treating agent is lowered or suspended, and the uniform adhesion is lowered, so that the yarn quality is lowered. If it exceeds 70% by weight, the yarn breakage will increase and the yarn-making property will deteriorate.
The weight ratio of the component (B) in the nonvolatile content of the treatment agent is 5 to 25% by weight, preferably 7 to 20% by weight, and more preferably 10 to 20% by weight. If it is less than 5% by weight, the occurrence of yarn breakage cannot be reduced and the yarn-making property is deteriorated. If it exceeds 25% by weight, the permeability of the aqueous liquid of the treating agent is lowered or suspended, and the uniform adhesion is lowered, so that the yarn quality is lowered.

The weight ratio of the component (C) in the nonvolatile content of the treatment agent is preferably 5 to 20% by weight, more preferably 10 to 20% by weight, and further preferably 15 to 20% by weight. If the amount is less than 5% by weight, the yarn quality may be deteriorated due to insufficient smoothness. If the amount exceeds 20% by weight, the aqueous solution of the treatment agent is suspended and uniform adhesion is reduced. Sometimes.
The weight ratio of the component (D) in the nonvolatile content of the treatment agent is preferably 5 to 30% by weight, more preferably 10 to 25% by weight, and further preferably 10 to 15% by weight. If it is less than 5% by weight, the spinning performance may be deteriorated due to insufficient oil film strength, and if it exceeds 30% by weight, the aqueous liquid may be suspended and uniform adhesion may be reduced.
The weight ratio of the component (E) in the nonvolatile content of the treatment agent is preferably 1 to 20% by weight, more preferably 5 to 20% by weight, and even more preferably 10 to 15% by weight. If it is less than 1% by weight, the yarn-forming property may be deteriorated due to insufficient antistatic property, and if it exceeds 20% by weight, the aqueous liquid is suspended and uniform adhesion is lowered, so that the yarn quality may be lowered. .

  Moreover, the processing agent for synthetic fibers of this invention may contain an emulsifier, a penetrant, an antistatic agent etc. as needed in the range which does not impair the effect of this invention. The total weight ratio of these emulsifiers, penetrants, antistatic agents, etc. in the non-volatile content of the treatment agent is preferably 50% by weight or less from the standpoint of more manifesting properties such as fiber convergence and oil film reinforcement, and 40% by weight. % Or less is more preferable, 30% by weight or less is more preferable, and 20% by weight or less is most preferable.

  About the manufacturing method of the processing agent for synthetic fibers of this invention, there is no limitation in particular and a well-known method is employable. The treatment agent is usually produced by mixing the constituent components described above in an arbitrary order.

[Synthetic filament yarn]
The synthetic fiber filament yarn of the present invention is obtained by adhering the synthetic fiber treating agent of the present invention to a (raw material) synthetic fiber filament yarn, and the synthetic fiber filament yarn manufacturing method of the present invention comprises a raw synthetic fiber It includes a step of applying the synthetic fiber treating agent of the present invention to the filament yarn. After the treatment agent is applied, stretching and heat setting are performed by a heat roller, and the film is wound up. The adhesion amount of the non-volatile content of the treating agent for synthetic fiber is preferably 0.3 to 1.5% by weight, more preferably 0.5 to 1.2% by weight with respect to the (raw material) synthetic fiber filament. 7 to 1.0% by weight is more preferable.

  (Raw material) The method for applying the synthetic fiber treating agent of the present invention to the synthetic fiber filament is not particularly limited, and a known method can be employed. Usually, it is given in the spinning process or drawing process of synthetic fiber filaments, and (raw material) is a method in which a processing agent of an aqueous aqueous liquid emulsified with non-volatile content in water is supplied to the synthetic fiber filaments by roller oiling, guide oiling, etc. Is mentioned.

  (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. The polyester fiber includes polyester (PET) having ethylene terephthalate as a main constituent unit, polyester (PTT) having trimethylene terephthalate as a main constituent unit, polyester (PBT) having butylene terephthalate as a main constituent unit, and main constituent units of lactic acid. Polyester (PLA) and the like are exemplified, and examples of the polyamide fiber include nylon 6 and nylon 66, and examples of the polyolefin fiber 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.

[Method for producing synthetic filament yarn]
The method for producing a synthetic fiber filament yarn of the present invention includes a step of applying an aqueous liquid of the synthetic fiber treating agent to the (raw material) synthetic fiber filament yarn.
(Raw material) The method for applying the synthetic fiber treating agent of the present invention to the synthetic fiber filament is not particularly limited, and a known method can be employed. Usually, it is given in the spinning process or drawing process of synthetic fiber filaments, and (raw material) is a method in which a processing agent of an aqueous aqueous liquid emulsified with non-volatile content in water is supplied to the synthetic fiber filaments by roller oiling, guide oiling, etc. Is mentioned.

  EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, it is not limited to the Example described here. The percentage (%) shown in the text and the table indicates “% by weight” unless otherwise specified. In Examples and Comparative Examples, each evaluation was performed based on the following method.

Example 1
50 parts of the non-volatile content of the synthetic fiber treating agent shown in Table 1 and 50 parts of ion-exchanged water were uniformly mixed to prepare a synthetic fiber treating agent aqueous solution having a concentration of 50%.
(Examples 2 to 10, Comparative Examples 1 to 7)
In the same manner as in Example 1, an aqueous treating agent solution for synthetic fibers was prepared so that the concentrations shown in Table 1 were obtained.
A polyethylene terephthalate chip having an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% is dried by a conventional method, then spun at 295 ° C. using an extruder, discharged from a die, cooled and solidified, and then a running yarn The above-mentioned aqueous treatment liquid for synthetic fibers is attached to the running thread by a guide oiling method using a metering pump so that it becomes 1.0% as a treatment agent for synthetic fibers on the running yarn, and then converged with a guide. The film is taken up at a speed of 3000 m / min by a take-up roller heated to 90 ° C., and then stretched twice between the take-up roller and a stretch roller heated to 120 ° C. rotating at a speed of 6000 m / min, 83. A 3 dtex (75 denier) 36 filament polyester fiber was produced.

<Viscosity measurement method>
The kinematic viscosity (unit: mm ² / s) at 30 ° C. and 50 ° C. was measured by the Cannon Fenceke method.

<Transmissivity>
The transmittance of the treating agent for synthetic fibers prepared in Examples and Comparative Examples was measured with a spectrophotometer U-1900 Spectrophotometer manufactured by Hitachi, Ltd. The measurement conditions were defined as a wavelength of 670 nm and a measurement temperature of 25 ° C. If the transmittance is 95% or more, uniformity and stability as a synthetic fiber treating agent are easily exhibited. The most preferred transmittance is 100%.

<Measurement of adhesion amount>
2 g of the produced polyester fiber was precisely weighed, extracted with 10 ml of a mixed solution of n-hexane / ethanol = 7/3 (volume ratio), and dried at 100 ° C. for 5 minutes on an aluminum tray in which the extract was precisely weighed. Thereafter, the mass was measured, and the oil agent adhesion amount was determined by the following formula 1.
Oil amount (%) = ((B−A) / S) × 100
A: Weight of the aluminum tray B: Weight of the aluminum tray containing the extracted oil agent S: Weight of the fiber used for extraction

<Spinnability>
The number of yarn breaks per ton of yarn during production of the polyester fiber was measured 10 times, and the average value was evaluated according to the following criteria. ◎ and ○ were accepted.
◎: Number of thread breaks less than 0.5 ○: Number of thread breaks 0.5 to less than 1.0 △: Number of thread breaks 1.0 to less than 2.0 times ×: Number of thread breaks 2 .0 times or more

<Evaluation of yarn quality>
The Worcester spot U% of the produced polyester fiber was evaluated at a yarn speed of 200 m / min using a Wooster Tester UT-5 manufactured by Wooster. The same evaluation was performed 5 times, and the evaluation was performed according to the following criteria from the results of each time. ◎ and ○ were accepted.
◎: Wooster spots U% is 1.0 or less in all 5 times ○: 1 time out of 5 times, Wooster spots U% is 1.0 or more △: 2 times out of 5 times, Wooster spots U% is 1.0 or more ×: 3 times or more out of 5 times, Wooster plaque U% is 1.0 or more

<Evaluation of dyeability>
A knitted fabric having a diameter of 70 mm and a length of 1.2 m was produced from the produced polyester fiber by a cylindrical knitting machine. This knitted fabric was dyed by a high-pressure dyeing method using a disperse dye (trade name Kayalon Polyester Blue EBL-E manufactured by Nippon Kayaku Co., Ltd.). The dyed knitted fabric is washed with water according to a conventional method, reduced and washed, dried, and then attached to an iron cylinder having a diameter of 70 mm and a length of 1.0 m, and the deeply dyed portion of the knitted fabric surface is observed with the naked eye. The score was counted and evaluated. The same evaluation was performed 5 times, and the average value of the points of the deeply dyed portions counted each time was evaluated according to the following criteria. ◎ and ○ were accepted.
◎: There is no deeply dyed portion ○: There are 1 to 2 darkly dyed portions △: 3 to 6 darkly dyed portions ×: 7 or more darkly dyed portions

In Tables 1 and 2, the following components were used.
A-1 secondary alkyl alcohols _{(C 12-14)} to EO7 mole random addition compounds were A-2 alkyl alcohols _{(C 12, 13)} to PO3 mol EO8 mole random addition compounds were A-3 PO8 mol EO8 mol randomly stearyl alcohol the added compound a-4 alkyl alcohols _{(C 12-14)} to after PO18 molar added to EO8 mol adduct and compound a-5 secondary alkyl alcohols _{(C 12-14)} EO9 mole random addition compounds were a-6 2-ethylhexyl Compound B-1 obtained by random addition of PO1 mol EO2 mol to alcohol and ester compound B-2 of polyethylene glycol (molecular weight 400) and 1 mol of lauric acid Ester compound B of polyethylene glycol (molecular weight 400) and 1 mol of oleic acid -3 Ester compound of polyethylene glycol (molecular weight 600) and 1 mole of oleic acid C1-1 2-ethylhexyl stearate C6-1 Mineral oil 150 seconds C7-1 Compound C7-2 cured castor oil added to 1 mole of hardened castor oil Compound D-1 with 20 moles of EO added to 1 mole Compound D-1 PO8 moles EO 24 moles Randomly added compound D-2 PO11 moles EO 32 moles Randomly added compound E-1 Dioctylsulfosuccinic acid sodium salt E-2 Alkanesulfonate sodium salt E-3 POE ( 5) Laurylamide E-4 POE (3) Secondary alkyl ( _C12-14 ) phosphate potassium salt E-5 Benzyl alcohol E-6 Oleic acid potassium salt E-7 Ethylene glycol (POE (7) is polyoxyethylene (7) 7) mole .PO showing a represents oxypropylene, EO is _{.C 12, 13} indicating the oxyethylene has a carbon number of the monovalent fatty acid indicates a mixture of 12 and 13.)

As can be seen from Tables 1 and 2, the treating agents for synthetic fibers according to Examples 1 to 10 are for synthetic fibers containing a polyoxyalkylene aliphatic alkyl ether component (A) and a polyalkylene glycol fatty acid ester component (B). It is a processing agent, the weight ratio of the said component (A) to the non volatile matter of a processing agent is 35 to 70 weight%, the weight ratio of the said component (B) is 5 to 25 weight%, and the non volatile matter of a processing agent. Since the kinematic viscosity at 30 ° C. of an aqueous liquid having a concentration of 40 to 70% by weight is 50 to 100 mm ² / s, the problem of the present application can be solved.
On the other hand, the processing agent for synthetic fibers according to Comparative Examples 1 to 7 has no component (A) (Comparative Example 4), and the weight ratio of the component (A) is not in the range of 35 to 70% by weight (Comparative Example 3, 5) No component (B) (Comparative Example 6), the weight ratio of the component (B) is not in the range of 5 to 25% by weight (Comparative Examples 4 and 7), and the concentration of the non-volatile content of the treating agent is 40 to 40 Since the kinematic viscosity at 30 ° C. exceeds 50 to 100 mm ² / s (Comparative Examples 1 to 7) at any concentration of 70% by weight of each aqueous liquid, the problem of the present application cannot be solved.

Claims (8)

A treating agent for synthetic fibers comprising a polyoxyalkylene aliphatic alkyl ether component (A) and a polyalkylene glycol fatty acid ester component (B),
The weight ratio of the component (A) in the nonvolatile content of the treatment agent is 35 to 70% by weight, the weight ratio of the component (B) is 5 to 25% by weight, and the nonvolatile content of the treatment agent is 40 to 70%. The processing agent for synthetic fibers whose kinematic viscosity in 30 degreeC of the aqueous solution of a weight% shows 50-100 mm < ² > / s. The processing agent for synthetic fibers according to any one of claims 1 to 4, wherein the kinematic viscosity of an aqueous liquid having a nonvolatile content of 40 to 70 wt% at 50 ° C is 15 to 45 mm ² / s.   The processing agent for synthetic fibers according to claim 1 or 2, wherein the transmittance of the aqueous liquid having a nonvolatile content of the processing agent of 40 to 70% by weight is 98% or more and 100% or less. The processing agent for synthetic fibers according to any one of claims 1 to 3, further comprising the following component (C), the following component (D), and the following component (E).
Component (C): ester compound (C1) having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded, ester compound (C2) having a structure in which an aliphatic polyhydric alcohol and a fatty acid are ester-bonded, aliphatic one An ester compound (C3) having a structure in which a monohydric alcohol and an aliphatic polycarboxylic acid are ester-bonded, an aromatic ester compound (C4) having an aromatic ring in the molecule, a sulfur-containing ester compound (C5), a mineral oil (C6 ) And a polyoxyalkylene group-containing hydroxy fatty acid polyhydric alcohol ester (C7) (D): an alkylene oxide adduct component (E) having a weight average molecular weight of 100 to 3000: aromatic alcohol, fatty acid salt, At least one selected from an aliphatic phosphate, an aliphatic sulfonate, and an aliphatic amide compound;   5 to 20% by weight of the component (C) in the nonvolatile content of the treatment agent, 5 to 30% by weight of the component (D), and 1 to 20% by weight of the component (E). %. The synthetic fiber treating agent according to claim 4, which is%. 6. The synthetic fiber according to claim 1, wherein each of the aqueous liquids having a nonvolatile content of the treatment agent of 80 wt% and 90 wt% has a kinematic viscosity at 30 ° C. of 50 to 100 mm ² / s. Processing agent.   A synthetic fiber filament yarn obtained by attaching the synthetic fiber treating agent according to any one of claims 1 to 6 to a (raw material) synthetic fiber filament yarn.   The manufacturing method of a synthetic fiber filament yarn including the process of providing the aqueous liquid of the synthetic fiber processing agent in any one of Claims 1-6 to a (raw material) synthetic fiber filament yarn.