Treatment agent for synthetic fibers and synthetic fibers

Abstract

The subject of the present invention is a treating agent for synthetic fibers and the like that can improve the cleanability of tar adhering to rollers during use. The treating agent for synthetic fibers of the present invention contains a smoothing agent (A), a nonionic surfactant (B), and an ionic surfactant (C) containing an organic sulfonic acid compound (C1) having one sulfo group in the molecule and an organic sulfonic acid compound (C2) having two or more sulfo groups in the molecule. The treating agent is characterized in that the mass ratio of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) is C1 / C2 = 99 / 1 to 80 / 20, and the potassium content detected from the non-volatile components of the treating agent for synthetic fibers by ICP emission spectrometry is 0.1 ppm or more and 300 ppm or less.

Description

Technical Field

[0001] The present invention relates to a treating agent for synthetic fibers capable of improving the cleanability of tar adhering to rolls, and synthetic fibers imparted with the treating agent for synthetic fibers. Background Art

[0002] In the spinning and drawing process of synthetic fibers or the like, from the viewpoints of improving smoothness, antistatic properties, etc., a treatment of attaching a treating agent for synthetic fibers to the surface of synthetic fibers is sometimes performed.

[0003] Conventionally, a treating agent for synthetic fibers disclosed in Patent Document 1 has been known. Patent Document 1 discloses a treating agent for synthetic fibers containing an organic sulfonic acid compound. As the organic sulfonic acid compound, a sulfonic acid compound containing a hydrocarbon group having two sulfonic groups and an olefin sulfonic acid compound having one sulfonic group are used.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Patent No. 6777349 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] However, there is a problem that the cleaning of tar adhering to rolls during use takes time in existing treating agents for synthetic fibers.

[0009] Means for Solving the Problems

[0010] The inventors of the present invention conducted research to solve the above problems, and as a result, found that a composition containing an organic sulfonic acid compound (C1) having one sulfonic group in the molecule and an organic sulfonic acid compound (C2) having two or more sulfonic groups in the molecule at a specified ratio and having a specified potassium content is particularly suitable in the treating agent for synthetic fibers.

[0011] Each mode for solving the above problems will be described.

[0012] The treating agent for synthetic fibers of Mode 1 is characterized in that it contains a smoothing agent (A), a nonionic surfactant (B), and an ionic surfactant (C) containing an organic sulfonic acid compound (C1) having one sulfonic group in the molecule and an organic sulfonic acid compound (C2) having two or more sulfonic groups in the molecule, the mass ratio of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) is C1 / C2 = 99 / 1 to 80 / 20, and the potassium content detected from the non-volatile components of the treating agent for synthetic fibers by ICP emission spectrometry is 0.1 ppm or more and 300 ppm or less.

[0013] Regarding Method 2, in the treating agent for synthetic fibers described in Method 1, the above-mentioned smoothing agent (A) further contains the following complete ester compound (A1).

[0014] Complete ester compound (A1): A complete ester compound of a polyhydric alcohol and a monobasic fatty acid.

[0015] Regarding Method 3, in the treating agent for synthetic fibers described in Method 1 or 2, the above-mentioned smoothing agent (A) further contains a sulfur-containing ester compound (A2).

[0016] Regarding Method 4, in the treating agent for synthetic fibers described in any one of Methods 1 to 3, the above-mentioned nonionic surfactant (B) further contains a nitrogen-containing nonionic surfactant (B1).

[0017] Regarding Method 5, in the treating agent for synthetic fibers described in any one of Methods 1 to 4, a glycol compound (D) is further contained.

[0018] Regarding Method 6, in the treating agent for synthetic fibers described in any one of Methods 1 to 5, an antioxidant (E) is further contained.

[0019] The synthetic fiber of Method 7 is characterized in that the treating agent for synthetic fibers described in any one of Methods 1 to 6 is attached thereto.

[0020] Advantages of the Invention

[0021] According to the present invention, the cleanability of the tar adhering to the roll when using the treating agent for synthetic fibers can be improved. Detailed Embodiments

[0022] <First Embodiment>

[0023] The following describes the first embodiment in which the treating agent for synthetic fibers of the present invention (hereinafter also referred to as the treating agent) is embodied. The treating agent of this embodiment contains a smoothing agent (A), a nonionic surfactant (B), and an ionic surfactant (C). The treating agent may further contain a glycol compound (D) and / or an antioxidant (E).

[0024] (Smoothing Agent (A))

[0025] As the smoothing agent (A) in the treating agent to which this embodiment is applied, for example, ester oil, mineral oil, etc. can be cited.

[0026] There is no particular limitation on the ester oil, and ester oils produced from fatty acids and alcohols can be cited. The ester oil can be produced, for example, from fatty acids and alcohols having an odd or even number of hydrocarbon groups described later.

[0027] Regarding the fatty acids as raw materials for ester oils, there are no particular restrictions on the number of carbon atoms, presence or absence of side chains, valence, etc. For example, they can be higher fatty acids, fatty acids with a ring, or fatty acids with an aromatic ring. Regarding the alcohols as raw materials for ester oils, there are no particular restrictions on the number of carbon atoms, presence or absence of side chains, valence, etc. For example, they can be higher alcohols, alcohols with a ring, or alcohols with an aromatic ring.

[0028] As preferred ester oils, the following complete ester compounds (A1) and sulfur-containing ester compounds (A2) can be cited. That is, the smoothing agent (A) preferably contains at least one of the complete ester compound (A1) and the sulfur-containing ester compound (A2). By making the treatment agent contain the complete ester compound (A1), smoothness can be imparted to the fiber, and the accumulation of tar in each device can be reduced. By making the treatment agent contain the sulfur-containing ester compound (A2), smoothness can be imparted to the fiber, and the cleanability of the tar adhering to the roll during use can be further improved.

[0029] The complete ester compound (A1) is a complete ester compound of a polyol and a monocarboxylic acid. The complete ester compound (A1) is preferably a complete ester compound of a polyol having a linear structure with 3 or more and 6 or less carbon atoms and a monocarboxylic acid having 8 or more and 24 or less carbon atoms, and more preferably a complete ester compound of a polyol having a linear structure with 3 or more and 5 or less carbon atoms and a monocarboxylic acid having 12 or more and 18 or less carbon atoms. From the aspect of improving the stability of the treatment agent during storage, it is preferred that a monocarboxylic acid having a different number of carbon atoms from that of the polyol is bonded to the polyol, and it is more preferred that the monocarboxylic acid contains an unsaturated fatty acid.

[0030] The polyol can be a polyol without a cyclic structure, a linear polyol, or a polyol with a branched structure. As specific examples of the polyol, for example, ethylene glycol, propylene glycol, 1,3 - propanediol, 1,2 - butanediol, 1,3 - butanediol, 1,4 - butanediol, 2 - methyl - 1,2 - propanediol, 1,5 - pentanediol, 1,6 - hexanediol, 2,5 - hexanediol, 2 - methyl - 2,4 - pentanediol, 2,3 - dimethyl - 2,3 - butanediol, glycerol, diglycerol, 2 - methyl - 2 - hydroxymethyl - 1,3 - propanediol, trimethylolpropane, pentaerythritol, sorbitol, etc. Among these, glycerol, trimethylolpropane, and pentaerythritol are preferred.

[0031] As the monocarboxylic acid, known monocarboxylic acids can be appropriately used, which can be saturated fatty acids or unsaturated fatty acids. In addition, they can be linear fatty acids or fatty acids with a branched structure.

[0032] As specific examples of monobasic fatty acids, for example, the following can be cited: (1) straight-chain saturated fatty acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid (caproic acid), caprylic acid (capric acid), pelargonic acid, capric acid (capric acid), dodecanoic acid (lauric acid), myristic acid (myristic acid), palmitic acid (palmitic acid), stearic acid (stearic acid), arachidic acid (arachidic acid), behenic acid (behenic acid), lignoceric acid, etc.; (2) branched-chain saturated fatty acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, isostearic acid, etc.; (3) straight-chain unsaturated fatty acids such as crotonic acid, myristoleic acid, palmitoleic acid, oleic acid, elaidic acid, eicosenoic acid, linoleic acid, α-linolenic acid, γ-linolenic acid, arachidonic acid, etc.; (4) hydroxy fatty acids such as ricinoleic acid; and so on.

[0033] As specific examples of the complete ester compound (A1), for example, trimethylolpropane trioleate, the triester of trimethylolpropane and coconut oil fatty acids, the triester of glycerol and oleic acid, and natural oils such as coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, palm oil, fish oil, etc. can be cited.

[0034] As specific examples of the sulfur-containing ester compound (A2), for example, dioctyl thiodipropionate, diisododecyl thiodipropionate, dilauryl thiodipropionate, diisocetyl thiodipropionate, diisopalmitoyl thiodipropionate, diisotetradecyl thiodipropionate, diisostearyl thiodipropionate, dioleyl thiodipropionate, octyl thiodipropionate, isododecyl thiodipropionate, lauryl thiodipropionate, isocetyl thiodipropionate, isostearyl thiodipropionate, oleyl thiodipropionate, octyl mercaptopropionate, stearyl mercaptopropionate, trimethylolpropane tris(mercapto propionate), etc. Among these, from the aspect of improving the stability of the treatment agent, an ester compound of thiodipropionic acid and a branched-chain alcohol is preferred.

[0035] As specific examples of other ester oils, for example, the following can be cited: (1) ester compounds of aliphatic monohydric alcohols and aliphatic monocarboxylic acids such as octyl palmitate, oleyl laurate, oleyl oleate, isotridecyl stearate, isocetyl oleate, isostearyl erucate; (2) complete ester compounds of aliphatic monohydric alcohols and aliphatic polycarboxylic acids such as diisostearyl adipate, dioleyl adipate, dioleyl azelate; (3) ester compounds of aromatic monohydric alcohols and aliphatic monocarboxylic acids such as benzyl oleate, benzyl laurate; (4) complete ester compounds of aromatic polyhydric alcohols and aliphatic monocarboxylic acids such as bisphenol A dilaurate; (5) complete ester compounds of aliphatic monohydric alcohols and aromatic polycarboxylic acids such as bis(2-ethylhexyl) phthalate, diisostearyl isophthalate, trioctyl trimellitate, etc.

[0036] As the mineral oil, a substance having a kinematic viscosity of 5 mm 2 / s or more at 40°C is used. As the mineral oil, for example, aromatic hydrocarbons, paraffinic hydrocarbons, naphthenic hydrocarbons, etc. can be mentioned. More specifically, for example, spindle oil, liquid paraffin, etc. can be mentioned. These mineral oils can be appropriately commercially available products.

[0037] These smoothing agents (A) can be used alone or in combination of two or more.

[0038] In the treatment agent, the lower limit of the content ratio of the complete ester compound (A1) is preferably 10% by mass or more, more preferably 15% by mass or more. The upper limit of the content ratio of the complete ester compound (A1) is preferably 75% by mass or less, more preferably 70% by mass or less. By limiting the content ratio within this range, smoothness can be imparted to the fiber and the accumulation of tar can be reduced. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0039] In the treatment agent, the lower limit of the content ratio of the sulfur-containing ester compound (A2) is preferably 0.5% by mass or more, more preferably 1% by mass or more. The upper limit of the content ratio of the sulfur-containing ester compound (A2) is preferably 20% by mass or less, more preferably 15% by mass or less. By limiting the content ratio within this range, smoothness can be imparted to the fiber and the cleanability of the tar adhering to the roll during use can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0040] In the treatment agent, the lower limit of the content ratio of the smoothing agent (A) is preferably 20% by mass or more, more preferably 30% by mass or more. The upper limit of the content ratio of the smoothing agent (A) is preferably 80% by mass or less, more preferably 70% by mass or less. By limiting the content ratio within this range, smoothness can be imparted to the fiber and the effect of the present invention can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0041] (Nonionic surfactant (B))

[0042] As the nonionic surfactant (B) in the treatment agent supplied to the present embodiment, a known substance can be appropriately used. The nonionic surfactant (B) preferably contains a nitrogen-containing nonionic surfactant (B1). By including the nitrogen-containing nonionic surfactant (B1) in the treatment agent, the cleanability of the tar adhering to the roll during use can be further improved. Examples of the nitrogen-containing nonionic surfactant (B1) include compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to an organic primary amine as an amine compound, amide compounds obtained by condensing an amine compound with a carboxylic acid, and compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to fatty acid amides. Among these, compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to an organic primary amine are preferred.

[0043] Specific examples of the aliphatic amine or organic primary amine used as a raw material for the nitrogen-containing nonionic surfactant (B1) include, for example, methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine (stearylamine), octadecenylamine, coconut amine, and the like.

[0044] As the alkylene oxide used as a raw material for forming the (poly)oxyalkylene structure, an alkylene oxide having 2 or more and 4 or less carbon atoms is preferred. Specific examples of the alkylene oxide include, for example, ethylene oxide, propylene oxide, butylene oxide, and the like. The addition molar number of the alkylene oxide can be appropriately set, and is preferably 0.1 mol or more and 250 mol or less, more preferably 1 mol or more and 200 mol or less, further preferably 2 mol or more and 150 mol or less, and particularly preferably 3 mol or more and 40 mol or less. A range obtained by arbitrarily combining the above upper and lower limits is also conceivable. It should be noted that the addition molar number of the alkylene oxide represents the molar number of the alkylene oxide relative to 1 mol of the addition target compound in the input raw materials. The alkylene oxide can be used alone or two or more alkylene oxides can be appropriately combined and used. In the case of applying two or more alkylene oxides, their addition modes can be any one of block addition, random addition, and a combination of block addition and random addition, and there is no particular limitation.

[0045] Specific examples of the carboxylic acid used as a raw material for the nitrogen-containing nonionic surfactant (B1) include: (1) straight-chain alkyl carboxylic acids such as octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, heneicosanoic acid, docosanoic acid; (2) branched-chain alkyl carboxylic acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, isooctadecanoic acid; (3) straight-chain alkenyl carboxylic acids such as octadecenoic acid, octadecadienoic acid, octadecatrienoic acid; (4) aromatic carboxylic acids such as benzoic acid; (5) hydroxycarboxylic acids such as ricinoleic acid; and the like.

[0046] Specific examples of the fatty acid amides used as raw materials for the nitrogen-containing nonionic surfactant (B1) include, for example, octanamide, lauramide, palmitamide, stearamide, oleamide, behenamide, lignoceramide, amides of fatty acids and diethanolamine, amides of fatty acids and ethylenediamine, and the like.

[0047] Specific examples of the nitrogen-containing nonionic surfactant (B1) include, for example, compounds obtained by adding an alkylene oxide to laurylamine, compounds obtained by adding an alkylene oxide to stearylamine, and the like.

[0048] As the nonionic surfactant (B), other nonionic surfactants other than the above-mentioned nitrogen-containing nonionic surfactant (B1) can be used.

[0049] Examples of other nonionic surfactants include: compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to alcohols or carboxylic acids, ether-ester compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to ester compounds of carboxylic acids and polyhydric alcohols, partial ester compounds of carboxylic acids and polyhydric alcohols, and compounds having a polyoxyalkylene structure such as block copolymers having a polyoxyethylene chain and a polyoxypropylene chain.

[0050] Specific examples of the alcohols used as raw materials for the nonionic surfactant include, for example: (1) straight-chain alkyl alcohols such as methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosanol, heneicosanol, docosanol, tricosanol, tetracosanol, pentacosanol, hexacosanol, heptacosanol, octacosanol, nonacosanol, triacontanol; (2) branched-chain alkyl alcohols such as isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isotriacontanol, isohexadecanol, isoseptadecanol, isooctadecanol, isononadecanol, isoeicosanol, isheneicosanol, isodocosanol, isotricosanol, isotetracosanol, isopentacosanol, isohexacosanol, isheptacosanol, isooctacosanol, isononacosanol, isopentadecanol; (3) straight-chain alkenyl alcohols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, nonadecenol; (4) branched-chain alkenyl alcohols such as isohexadecenol, isooctadecenol; (5) cyclic alkyl alcohols such as cyclopentanol, cyclohexanol; (6) aromatic alcohols such as phenol, nonylphenol, benzyl alcohol, monophenylated phenol, diphenylated phenol, triphenylated phenol; and so on.

[0051] Specific examples of the carboxylic acids used as raw materials for nonionic surfactants include the same substances as those listed above as specific examples of the carboxylic acids used as raw materials for nitrogen-containing nonionic surfactants (B1).

[0052] The details of the alkylene oxides used as raw materials for the (poly)oxyalkylene structure that forms the nonionic surfactant are the same as those of the alkylene oxides described above as raw materials for the (poly)oxyalkylene structure that forms the nitrogen-containing nonionic surfactant (B1), so the description thereof is omitted.

[0053] Specific examples of the polyols used as raw materials for nonionic surfactants include, for example, ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 1,5-pentanediol, 1,6-hexanediol, 2,5-hexanediol, 2-methyl-2,4-pentanediol, 2,3-dimethyl-2,3-butanediol, glycerol, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitan, pentaerythritol, sorbitol, and the like.

[0054] Specific examples of the ester compounds of carboxylic acids and polyols used as raw materials for nonionic surfactants include, for example, synthetic esters such as sorbitan monooleate, sorbitan dioleate, sorbitan trioleate, glycerol dioleate, and sucrose fatty acid esters, natural oils such as coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, palm oil, and fish oil, and their derivatives.

[0055] Examples of the compounds having a polyoxyalkylene structure include compounds having a polyoxyalkylene structure other than the diol compound (D) described below. For example, block copolymers having a polyoxyethylene chain and a polyoxypropylene chain can be cited. The block copolymer is not particularly limited as long as it has a polyoxypropylene chain with low hydrophilicity and a polyoxyethylene chain with high hydrophilicity and has a surface-active effect. The number of polyoxyethylene chains and polyoxypropylene chains in the molecule is not particularly limited. For example, it can be a block copolymer composed of one polyoxypropylene chain and one polyoxyethylene chain, or a Poloxamer series surfactant composed of a polyoxypropylene chain and two polyoxyethylene chains sandwiching the polyoxypropylene chain. In addition, it can also be an ether compound obtained by adding a polyoxyethylene chain and a polyoxypropylene chain to a polyol.

[0056] As specific examples of other nonionic surfactants, for example, compounds obtained by adding an alkylene oxide to coconut oil fatty acid, compounds obtained by adding an alkylene oxide to oleyl alcohol, compounds obtained by adding an alkylene oxide to isostearyl alcohol, ester compounds of polyalkylene glycol and oleic acid, sorbitan monooleate, ester compounds of compounds obtained by adding an alkylene oxide to hydrogenated castor oil and lauric acid, polycondensates of compounds obtained by adding an alkylene oxide to hydrogenated castor oil, adipic acid and stearic acid, compounds obtained by adding an alkylene oxide to castor oil or hydrogenated castor oil, ester compounds of compounds obtained by adding an alkylene oxide to castor oil or hydrogenated castor oil and oleic acid, etc. can be cited.

[0057] These nonionic surfactants (B) can be used alone or two or more of them can be used in appropriate combination.

[0058] In the treatment agent, the lower limit of the content ratio of the nitrogen-containing nonionic surfactant (B1) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. The upper limit of the content ratio of the nitrogen-containing nonionic surfactant (B1) is preferably 10% by mass or less, more preferably 5% by mass or less. By limiting the content ratio within this range, the cleanability of the tar adhering to the roll during use can be further improved. It should be noted that ranges obtained by arbitrarily combining the above upper and lower limits are also conceivable.

[0059] In the treatment agent, the lower limit of the content ratio of the nonionic surfactant (B) is preferably 20% by mass or more, more preferably 25% by mass or more. The upper limit of the content ratio of the nonionic surfactant (B) is preferably 70% by mass or less, more preferably 65% by mass or less. By limiting the content ratio within this range, stability can be imparted to the treatment agent and the effects of the present invention can be further improved. It should be noted that ranges obtained by arbitrarily combining the above upper and lower limits are also conceivable.

[0060] (Ionic surfactant (C))

[0061] The ionic surfactant (C) in the treatment agent for this embodiment is composed of an organic sulfonic acid compound (C1) having 1 sulfo group in the molecule and an organic sulfonic acid compound (C2) having 2 or more sulfo groups in the molecule.

[0062] As the organic sulfonic acid compound (C1) or the organic sulfonic acid compound (C2), for example, aliphatic organic sulfonic acids such as alkane sulfonic acid, olefin sulfonic acid, hydroxyalkane sulfonic acid, aromatic organic sulfonic acids such as diphenyl ether sulfonic acid, alkylaryl sulfonic acid, alkyl sulfonated succinic acid, and their salts can be cited. When the organic sulfonic acid compound contains a hydrocarbon group, the hydrocarbon can be linear or branched.

[0063] Examples of salts that form the organic sulfonic acid compound (C1) or the organic sulfonic acid compound (C2) include metal salts, ammonium salts, phosphonium salts, organic amine salts, and the like.

[0064] Examples of metal salts include alkali metal salts and alkaline earth metal salts. Specific examples of alkali metals that form alkali metal salts include sodium, potassium, lithium, etc. Examples of alkaline earth metals that form alkaline earth metal salts include metals corresponding to Group 2 elements, such as calcium, magnesium, beryllium, strontium, barium, etc.

[0065] Specific examples of phosphonium that forms phosphonium salts include quaternary phosphonium such as tetramethylphosphonium, tetraethylphosphonium, tetrabutylphosphonium, tetraoctylphosphonium, dibutyldihexylphosphonium, trihexyltetradecylphosphonium, triethyloctylphosphonium, trioctylmethylphosphonium, triphenylmethylphosphonium, etc.

[0066] The amine that forms the organic amine salt can be any of primary amines, secondary amines, and tertiary amines. Specific examples of amines that form amine salts include: (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, dimethyllaurylamine, etc.; (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, and their derivatives; (3) alkanolamines such as monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyldiethanolamine, octyldiethanolamine, lauryldiethanolamine, etc.; (4) arylamines such as N-methylbenzylamine; (5) polyoxyalkylene alkylamino ethers such as polyoxyethylene laurylamino ether, polyoxyethylene stearylamino ether, etc.; and so on.

[0067] Among these salts, sodium salts are preferred from the aspect of making the effects of the present invention more excellent.

[0068] The organic sulfonic acid compound (C1) is preferably a compound represented by the following general formula (1), general formula (3), or general formula (4).

[0069] The organic sulfonic acid compound (C2) is preferably a compound represented by the following general formula (2) or general formula (5).

[0070] [Chemical formula 1]

[0071]

[0072] (In formula (1), a and b are each an integer of 0 or more, and a + b represents an integer satisfying 5 or more and 17 or less. M 1 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, phosphonium, or an organic amine salt.)

[0073] As specific examples of the compound represented by the general formula (1), for example, those in which the value of a + b is 11 or more and 14 or less, and M 1 is a secondary alkyl sulfonate (monosulfonate) where M is Na; those in which the value of a + b is 9 or more and 12 or less, and M 1 is a secondary alkyl sulfonate (monosulfonate) where M is Na; those in which the value of a + b is 11 or more and 14 or less, and M 1 is a secondary alkyl sulfonate (monosulfonate) where M is tetrabutylphosphonium; and so on.

[0074] [Chemical formula 2]

[0075]

[0076] (In formula (2), c, d, and e are each an integer of 0 or more, and c + d + e represents an integer satisfying 4 or more and 16 or less. M 2 , M 3 each represent a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, phosphonium, or an organic amine salt.)

[0077] As specific examples of the compound represented by the general formula (2), for example, those in which the value of c + d + e is 10 or more and 13 or less, and M 2 , M 3 are each a secondary alkyl sulfonate (disulfonate) where M is Na; those in which the value of c + d + e is 8 or more and 11 or less, and M 2 , M 3 are each a secondary alkyl sulfonate (disulfonate) where M is Na; those in which the value of c + d + e is 10 or more and 13 or less, and M 2 , M 3 are each a secondary alkyl sulfonate (disulfonate) where M is tetrabutylphosphonium; and so on.

[0078] [Chemical formula 3]

[0079] R 1 -SO3M 4 …(3)

[0080] (R 1 represents an alkenyl group having 6 or more and 24 or less carbon atoms. M 4 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, phosphonium, or an organic amine salt.)

[0081] As specific examples of the compound represented by the general formula (3), for example, those in which the carbon number of R 1 is 14 and M 4 is an alkenyl sulfonate (monosulfonate) where M is Na; those in which the carbon number of R 1 is 14 and M 4 is an alkenyl sulfonate (monosulfonate) where M is K; those in which the carbon number of R 1 is 14 or more and 18 or less, and M4 Alkenyl sulfonates (monosulfonates) of Na; and so on.

[0082] [Chemical formula 4]

[0083] R 2 -SO3M 5 …(4)

[0084] (R 2 represents a hydroxyalkyl group having 6 or more and 24 or less carbon atoms. M 5 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, phosphonium, or an organic amine salt.)

[0085] As specific examples of the compound represented by the general formula (4), for example, it can be cited: R 2 having 14 carbon atoms, M 5 being Na hydroxyalkyl sulfonate (monosulfonate); R 2 having 14 carbon atoms, M 5 being K hydroxyalkyl sulfonate (monosulfonate); R 2 having 14 or more and 18 or less carbon atoms, M 5 being Na hydroxyalkyl sulfonate (monosulfonate); and so on.

[0086] [Chemical formula 5]

[0087] R 3 -SO3M 6 …(5)

[0088] (R 3 represents a hydrocarbon group having 6 or more and 24 or less carbon atoms having at least 1 sulfo group (-SO3M 7 ). M 6 , M 7 each represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, phosphonium, or an organic amine salt.)

[0089] As specific examples of the compound represented by the general formula (5), for example, it can be cited: R 3 having 14 carbon atoms, M 6 , M 7 each being Na alkyl sulfonate (disulfonate); R 3 having 14 carbon atoms, M 6 , M 7 each being K alkyl sulfonate (disulfonate); R 3 having 14 or more and 18 or less carbon atoms, M 6 , M 7 each being Na alkyl sulfonate (disulfonate); and so on.

[0090] Specific examples of aliphatic organic sulfonic acids other than those described above include aliphatic monosulfonic acids or aliphatic disulfonic acids such as heptanesulfonic acid, 2-ethylhexanesulfonic acid, octanesulfonic acid, nonanesulfonic acid, decanesulfonic acid, undecanesulfonic acid, dodecanesulfonic acid, tridecanesulfonic acid, tetradecanesulfonic acid, pentadecanesulfonic acid, hexadecanesulfonic acid, heptadecanesulfonic acid, octadecanesulfonic acid, isooctanesulfonic acid, isodecanesulfonic acid, isoundecanesulfonic acid, isododecanesulfonic acid, isotridecanesulfonic acid, isotetradecanesulfonic acid, isopentadecanesulfonic acid, isohexadecanesulfonic acid, isheptadecanesulfonic acid, isooctadecanesulfonic acid, and their salts, etc.

[0091] Specific examples of aromatic organic sulfonic acids include p-toluenesulfonic acid, ethylbenzenesulfonic acid, decylbenzenesulfonic acid, undecylbenzenesulfonic acid, dodecylbenzenesulfonic acid, tridecylbenzenesulfonic acid, tetradecylbenzenesulfonic acid, pentadecylbenzenesulfonic acid, hexadecylbenzenesulfonic acid, dibutylnaphthalenesulfonic acid, hexadecyl diphenyl ether disulfonic acid, etc.

[0092] Specific examples of alkyl sulfonated succinic acids include dioctyl sulfonated succinate, dibutyl sulfonated succinate, dilauryl sulfonated succinate, polyoxyethylene lauryl ether sulfonated succinate, etc.

[0093] These organic sulfonic acid compounds (C1) or organic sulfonic acid compounds (C2) can each be used alone, or two or more of them can be appropriately combined and used.

[0094] The mass ratio of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) is C1 / C2 = 99 / 1 to 80 / 20, preferably 98 / 2 to 81 / 19. By limiting the content ratio within this range, the effects of the present invention can be improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable. In one aspect of this embodiment, the value of the mass ratio C1 / C2 of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) is, for example, 4.3 (≈81.1 / 18.9) or more, 5 (≈83.3 / 16.7) or more, 6 (≈85.7 / 14.3) or more, 7.2 (≈87.8 / 12.2) or more, 8 (≈88.9 / 11.1) or more, 8.5 (≈89.5 / 10.5) or more, 9.9 (≈90.8 / 9.2) or more, 10 (≈90.9 / 9.1) or more, 13 (≈92.9 / 7.1) or more, 15.1 (≈93.8 / 6.2) or more, 18.6 (≈94.9 / 5.1) or more, 19 (=95.0 / 5.0) or more, 24 (=96.0 / 4.0) or more, or 27.6 (≈96.5 / 3.5) or more. And similarly, the value of C1 / C2 is, for example, 49 (=98.0 / 2.0) or less, 27.6 (≈96.5 / 3.5) or less, 24 (=96.0 / 4.0) or less, 19 (=95.0 / 5.0) or less, 18.6 (≈94.9 / 5.1) or less, 15.1 (≈93.8 / 6.2) or less, 13 (≈92.9 / 7.1) or less, 10 (≈90.9 / 9.1) or less, 9.9 (≈90.8 / 9.2) or less, 8.5 (≈89.5 / 10.5) or less, 8 (≈88.9 / 11.1) or less, 7.2 (≈87.8 / 12.2) or less, 6 (≈85.7 / 14.3) or less, or 5 (≈83.3 / 16.7) or less.

[0095] In the treatment agent, the lower limit of the content ratio of the organic sulfonic acid compound (C1) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. The upper limit of the content ratio of the organic sulfonic acid compound (C1) is preferably 5% by mass or less, more preferably 4.5% by mass or less. By limiting the content ratio within this range, the effects of the present invention can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0096] In the treatment agent, the lower limit of the content ratio of the organic sulfonic acid compound (C2) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more. The upper limit of the content ratio of the organic sulfonic acid compound (C2) is preferably 1% by mass or less, more preferably 0.7% by mass or less. By limiting the content ratio within this range, the effects of the present invention can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0097] In the treatment agent, the lower limit of the total content ratio of the organic sulfonic acid compound (C1) and the organic sulfonic acid compound (C2) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. The upper limit of the total content ratio of the organic sulfonic acid compound is preferably 6% by mass or less, more preferably 5% by mass or less. By limiting the content ratio within this range, the effects of the present invention can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0098] As the ionic surfactant (C), other ionic surfactants other than the above-mentioned organic sulfonic acid compound (C1) and organic sulfonic acid compound (C2) can also be used.

[0099] As other ionic surfactants, known substances can be appropriately used. Examples of ionic surfactants include anionic surfactants, cationic surfactants, and amphoteric surfactants.

[0100] As the anionic surfactant, known substances can be appropriately adopted. Specific examples of the anionic surfactant include, for example: (1) phosphate esters of aliphatic alcohols such as lauryl phosphate, cetyl phosphate, octyl phosphate, 2-ethylhexyl phosphate, oleyl phosphate, stearyl phosphate, isostearyl phosphate, isocetyl phosphate; (2) phosphate esters of substances formed by adding at least one alkylene oxide selected from ethylene oxide and propylene oxide to aliphatic alcohols, such as polyoxyethylene lauryl ether phosphate, polyoxyethylene stearyl ether phosphate; (3) sulfate esters of aliphatic alcohols such as lauryl sulfate, oleyl sulfate, stearyl sulfate; (4) sulfate esters of substances formed by adding at least one alkylene oxide selected from ethylene oxide and propylene oxide to aliphatic alcohols, such as polyoxyethylene lauryl ether sulfate, polyoxyalkylene (polyethylene oxide, polypropylene oxide) lauryl ether sulfate, polyoxyethylene oleyl ether sulfate; (5) sulfate esters of fatty acids from natural sources such as castor oil fatty acid sulfate, sesame oil fatty acid sulfate, tall oil fatty acid sulfate, soybean oil fatty acid sulfate, rapeseed oil fatty acid sulfate, palm oil fatty acid sulfate; (6) sulfate esters of natural oils such as castor oil sulfate, sesame oil sulfate, tall oil sulfate, soybean oil sulfate, rapeseed oil sulfate, palm oil sulfate; (7) fatty acid salts such as 2-ethylhexanoate, laurate, oleate, stearate, ricinoleate; (8) N-acyl sarcosinates such as oleoyl sarcosinate. As counterions of the anionic surfactant, for example, alkali metal salts such as potassium salts and sodium salts, ammonium salts, phosphonium salts, triethanolamine salts, alkanolamine salts such as (poly)oxyalkylene alkylamino ether salts, dibutylethanolamine salts, etc. can be cited.

[0101] Specific examples of the cationic surfactant include, for example, lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, docosyl trimethyl ammonium chloride, didodecyl dimethyl ammonium chloride, etc.

[0102] Specific examples of the amphoteric surfactant include, for example, betaine-type amphoteric surfactants, etc. These ionic surfactants (C) can be used alone, or two or more of them can be appropriately combined and used.

[0103] In the treatment agent, the lower limit of the content ratio of all the ionic surfactants (C) is preferably 0.5% by mass or more, more preferably 0.6% by mass or more. The upper limit of the content ratio of all the ionic surfactants (C) is preferably 10% by mass or less, more preferably 7% by mass or less. By limiting the content ratio within this range, the effect of the present invention can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0104] (Diol compound (D))

[0105] The treatment agent of the present embodiment may be admixed with a diol compound (D). By using the diol compound (D), it is possible to reduce the accumulation of tar in each device after the treatment agent adheres to the fiber.

[0106] Specific examples of the diol compound (D) include, for example, ethylene glycol, propylene glycol, 1,3 - propanediol, 1,2 - butanediol, 1,3 - butanediol, 1,4 - butanediol, 2 - methyl - 1,2 - propanediol, 1,5 - pentanediol, 1,6 - hexanediol, 2,5 - hexanediol, 2 - methyl - 2,4 - pentanediol, 2,3 - dimethyl - 2,3 - butanediol, diethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, copolymers of polyethylene glycol and polypropylene glycol, and the like. These diol compounds (D) may be used alone or in combination of two or more as appropriate.

[0107] When a (poly)oxyalkylene glycol is used as the diol compound (D), the molecular weight of the (poly)oxyalkylene glycol is preferably 1000 g / mol or less. Specific examples of the (poly)oxyalkylene glycol having a molecular weight of 1000 g / mol or less include, for example, ethylene glycol (molecular weight 62), diethylene glycol (molecular weight 106), triethylene glycol (molecular weight 150), polyethylene glycol (weight - average molecular weight 200), polyethylene glycol (weight - average molecular weight 400), polyethylene glycol (weight - average molecular weight 800), propylene glycol (molecular weight 76), dipropylene glycol (molecular weight 134), tripropylene glycol (molecular weight 192), polypropylene glycol (weight - average molecular weight 400), polypropylene glycol (weight - average molecular weight 800), and the like.

[0108] In the treatment agent, the lower limit of the content ratio of the diol compound (D) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. The upper limit of the content ratio of the diol compound (D) is preferably 5% by mass or less, more preferably 2% by mass or less. By limiting the content ratio within this range, it is possible to further reduce the accumulation of tar. It should be noted that ranges formed by arbitrarily combining the above - mentioned upper and lower limits are also conceivable. In this specification, the weight - average molecular weight is determined by gel permeation chromatography using polyethylene glycol as the standard substance.

[0109] (Antioxidant (E))

[0110] The treatment agent of the present embodiment may be admixed with an antioxidant (E). By making the treatment agent contain the antioxidant (E), it is possible to improve the cleanability of the tar adhering to the roller during use. In addition, after the treatment agent adheres to the fiber, it is possible to reduce the accumulation of tar in each device.

[0111] As the antioxidant (E) supplied to the present embodiment, known substances can be appropriately employed. Examples of the antioxidant (E) include phenolic antioxidants, phosphite antioxidants, amine antioxidants, organic sulfur antioxidants, and the like.

[0112] Specific examples of the antioxidant (E) include, for example: (1) phenolic antioxidants such as 1,3,5-tris(3’,5’-di-tert-butyl-4’-hydroxybenzyl)-s-triazine-2,4,6-(1H,3H,5H)trione, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanuric acid, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 2,2’-methylenebis(4-methyl-6-tert-butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, and tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane; (2) phosphite antioxidants such as octyl diphenyl phosphite, tris(nonylphenyl) phosphite, and tetra(tridecyl)-4,4’-butylidene-bis(2-tert-butyl-5-methylphenol) diphosphite; (3) monoalkyl diphenylamine compounds such as monooctyl diphenylamine and monononyl diphenylamine; dialkyl diphenylamine compounds such as 4,4’-dibutyl diphenylamine, 4,4’-dipentyl diphenylamine, 4,4’-dihexyl diphenylamine, 4,4’-diheptyl diphenylamine, 4,4’-dioctyl diphenylamine, 4,4’-dinonyl diphenylamine, and N-dinonyl diphenylamine; polyalkyl diphenylamine compounds such as tetrabutyl diphenylamine, tetrahexyl diphenylamine, tetraoctyl diphenylamine, and tetranonyl diphenylamine, etc., which are amine antioxidants; (4) sulfur antioxidants such as 4,4’-thiobis(6-tert-butyl-3-methylphenol) and 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(octylthio)-1,3,5-triazine; and so on. It should be noted that the sulfur-containing ester compound (A2) as the smoothing agent (A) is not included in the sulfur antioxidants. In addition, even among phenols, phenols having a sulfur atom in the structure are referred to as sulfur antioxidants.

[0113] These antioxidants (E) can be used alone or in combination of two or more.

[0114] In the treatment agent, the lower limit of the content ratio of the antioxidant (E) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more. The upper limit of the content ratio of the antioxidant (E) is preferably 5% by mass or less, more preferably 2% by mass or less. By limiting the content ratio within this range, the effect of the present invention can be further improved. It should be noted that ranges formed by arbitrarily combining the above upper and lower limits are also conceivable.

[0115] (Other)

[0116] The potassium content detected from the non-volatile components of the treatment agent by ICP emission spectrometry (Inductively Coupled Plasma Emission Spectrometry) is limited to 0.1 ppm or more and 300 ppm or less. By limiting it within this range, the cleanability of the tar adhering to the roll during use can be particularly improved. Furthermore, the alkali used in tar cleaning can also be made of a low concentration.

[0117] It should be noted that in the concentration measurement using ICP emission spectrometry, a solution with a known metal ion concentration can be prepared first, supplied to the ICP emission analysis device, a calibration curve can be made, and the concentration can be obtained based on the detected value of the sample. The non-volatile components in this specification refer to the residue after the treatment agent is heat-treated at 105°C for 2 hours to sufficiently remove the volatile components, that is, the absolutely dry matter.

[0118] The potassium contained in the treatment agent can be salts such as potassium fatty acid salts, potassium sulfonate salts, potassium phosphate ester salts, potassium lactate salts, potassium phosphate salts, etc., or alkalis such as potassium hydroxide and potassium methanol. A compound containing potassium can be added during the preparation of the treatment agent, or potassium can be introduced into the treatment agent as an impurity from the respective raw materials of the smoothing agent, non-ionic surfactant, and ionic surfactant that make up the treatment agent.

[0119] <Second Embodiment>

[0120] Next, a second embodiment in which the synthetic fiber based on the present invention is embodied will be described. The synthetic fiber of this embodiment is attached with the treatment agent of the first embodiment. The form of the treatment agent when attaching the treatment agent to the synthetic fiber can be a diluted solution diluted with a diluting solvent, such as an organic solvent solution, an aqueous solution, etc. From the aspects of the adhesiveness of the treatment agent to the fiber and economy, hydrocarbons having 10 or more and 15 or less carbon atoms and / or water are preferably used as the diluting solvent. The mixing ratio of the treatment agent and the diluting solvent is preferably Treatment agent mass: Diluting solvent mass = 99:1 to 10:90. Diluted solutions such as aqueous solutions are attached to the synthetic fiber, for example, in the spinning or stretching process. The diluted solution attached to the synthetic fiber can evaporate the diluting solvent through the stretching process and the drying process. Regarding the process of attaching the diluted solution, there is no particular limitation as long as it is a spinning process. By using it in a manufacturing device and process having a process of passing a roll at 150°C or higher in the stretching or heat treatment process, the effects of the invention can be more expected.

[0121] Specific examples of the synthetic fiber to which the treatment agent of the present embodiment is imparted are not particularly limited. For example, the following can be cited: (1) polyester fibers such as polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polylactic acid, and composite fibers containing these polyester-based resins; (2) polyamide fibers such as nylon 6 and nylon 66; (3) polyacrylic acid fibers such as polyacrylic acid and modified acrylic acid; (4) polyolefin fibers such as polyethylene and polypropylene; and so on. Among these, it is preferably applied to polyester fibers and polyamide fibers. The fineness of the synthetic fiber to be manufactured is not particularly limited, and it is preferably 150 dtex or more, more preferably 500 dtex or more, and further preferably 1000 dtex or more. In addition, the strength of the synthetic fiber to be manufactured is not particularly limited, and it is preferably 5.0 cN / dtex or more, more preferably 6.0 cN / dtex or more, and further preferably 7.0 cN / dtex or more.

[0122] The ratio of the treatment agent attached to the synthetic fiber is not particularly limited, and it is preferable that the treatment agent is attached in a ratio of 0.1% by mass or more and 5% by mass or less (excluding the ratio of solvents such as water) with respect to the synthetic fiber. By this configuration, the effect of the present invention can be further improved. In addition, the method of attaching the treatment agent is not particularly limited, and for example, known methods such as a roll oiling method, a metering pump-guided oiling method, an immersion oiling method, and a spray oiling method can be used.

[0123] In the present invention, the use of the synthetic fiber is not particularly limited, and it is preferably used for synthetic fibers for industrial materials. For example, it is more preferably used for synthetic fibers used in the fields of automobiles, construction, commerce, agriculture and fisheries, civil engineering, etc., such as fibers for airbags, fibers for seat belts, fibers for tire cord fabrics, fibers for carpets, fibers for tents, fibers for advertising fabrics, fibers for fishing nets, fibers for conveyor belts, and fibers for ropes.

[0124] The effects of the treatment agent and the synthetic fiber of the above embodiment will be described.

[0125] (1) The treatment agent of the above-described embodiment is composed of a blending of a leveling agent (A), a nonionic surfactant (B), and an ionic surfactant (C). The ionic surfactant (C) includes an organic sulfonic acid compound (C1) having one sulfo group in the molecule and an organic sulfonic acid compound (C2) having two or more sulfo groups in the molecule. In addition, the mass ratio of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) is limited to C1 / C2 = 99 / 1 to 80 / 20. Further, the potassium content detected from the nonvolatile components of the treatment agent by ICP emission spectrometry is limited to 0.1 ppm or more and 300 ppm or less. Therefore, the cleanability of the tar adhering to the roll during use can be improved. In addition, the tar cleaning liquid can be a low-concentration alkali. Further, after the treatment agent is adhered to the fiber, the accumulation of tar in each device can be reduced.

[0126] For treatment agents for synthetic fibers for industrial materials, it is required to be able to reduce yarn breakage and burrs to enable good yarn-making properties and to have good cleanability of the tar accumulated on the yarn guide rolls. For example, the temperature of the yarn guide roll during the production of synthetic fibers for industrial materials sometimes exceeds 200 °C, and the treatment agent adhered to the fiber gradually tarifies and accumulates. Since the accumulated tar causes yarn breakage and burrs, significantly impairing the yarn-making properties, regular cleaning is carried out. Regarding the cleaning of tar, for example, the machine is stopped within 24 to 72 hours and this cleaning is carried out once for several tens of minutes. During this period, it is impossible to stop supplying the polymer to the machine, resulting in a loss of the raw material polymer. With the treatment agent of the present invention, good yarn-making properties and tar cleanability can be achieved, and as a result, the manufacturing efficiency can be improved.

[0127] It should be noted that the above-described embodiment can be modified as follows. The above-described embodiment and the following modification examples can be implemented in combination with each other within a range where there is no technical contradiction.

[0128] · In the treatment agent of the above-described embodiment, within a range that does not hinder the effects of the present invention, components commonly used in treatment agents such as stabilizers, charge control agents, linking agents, ultraviolet absorbers, defoaming agents, preservatives, and rust inhibitors other than those described above for maintaining the quality of the treatment agent can be further blended during or after the production of the treatment agent.

[0129] · From the aspect of improving the appearance stability of the treatment agent during storage, etc., the treatment agent can be premixed with water. In this case, the mixing ratio of the treatment agent to water is preferably the mass of the treatment agent: the mass of water = 85:15 to 99.9:0.1.

[0130] Examples

[0131] Hereinafter, in order to more specifically illustrate the constitution and effects of the present invention, examples and the like are given, but the present invention is not limited to these examples. It should be noted that in the following descriptions of examples and comparative examples, unless otherwise specified, "parts" refers to parts by mass, and "%" refers to mass%.

[0132] Test Group 1 (Preparation of Treatment Agent)

[0133] (Example 1)

[0134] As shown in Table 1, the treatment agent of Example 1 was prepared, which contained: trimethylolpropane trioleate (A1-1) 50 parts (%) as a smoothing agent (A), bis(isostearyl) thiodipropionate (A2-1) 5 parts (%), a compound (B1-1) obtained by adding 3 moles of ethylene oxide (hereinafter referred to as EO) to 1 mole of laurylamine as a nonionic surfactant (B) 3 parts (%), a compound (B2-1) obtained by adding 12 moles of EO to 1 mole of coconut oil fatty acid 7 parts (%), a compound (B2-2) obtained by adding 15 moles of EO to 1 mole of oleyl alcohol 8 parts (%), sorbitan monooleate (B2-5) 10 parts (%), an ester compound (B2-6) of 1 mole of a compound obtained by adding 25 moles of EO to 1 mole of hydrogenated castor oil and 2 moles of lauric acid 10 parts (%), an organic sulfonic acid compound (C1-1) 1 part (%) as an ionic surfactant (C), an organic sulfonic acid compound (C2-1) 0.1 part (%), potassium ricinoleate (C3-1) 0.25 part (%), dibutylethanolamine salt of 2-ethylhexyl phosphate (C3-5) 2 parts (%), ethylene glycol (D-1) 1.8 parts (%) as a diol compound (D), and 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (E-1) 1.85 parts (%) as an antioxidant (E).

[0135] (Examples 2 to 20, Comparative Examples 1 to 6)

[0136] Regarding the treatment agents of Examples 2 to 20 and Comparative Examples 1 to 6, they were prepared in the same manner as the treatment agent of Example 1 by containing a smoothing agent (A), a nonionic surfactant (B), an ionic surfactant (C), a diol compound (D), an antioxidant (E), and other components (F) in the proportions shown in Table 1.

[0137] The types and contents of the smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), diol compound (D), antioxidant (E), and other components (F) are shown in the columns of "Smoothing Agent (A)", "Nonionic Surfactant (B)", "Ionic Surfactant (C)", "Diol Compound (D)", "Antioxidant (E)", and "Other Components (F)" in Table 1, respectively. Additionally, the mass ratio of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) contained in each treatment agent is shown in the column of "Mass Ratio C1 / C2" in Table 2.

[0138] · Determination of the potassium content in the non-volatile components of the treatment agent by ICP emission spectrometry

[0139] First, prepare a sample by diluting the non-volatile components of the treatment agent with distilled water so that the concentration becomes 1%. Additionally, as potassium standard solutions, prepare solutions with known concentrations of 0.5 ppm, 1 ppm, 5 ppm, and 10 ppm, respectively. Use them to measure the potassium content in the sample. In the case where measured values above 10 ppm appear, prepare potassium standard solutions of 10 ppm, 50 ppm, 100 ppm, and 500 ppm again to conduct the measurement. Also, use the distilled water used in the dilution as the 0 ppm standard solution. Measure the potassium content in the sample again. In the case where the result deviates from the upper limit of the calibration curve, further dilute the sample 10-fold with distilled water to conduct the measurement. Use an ICP emission analyzer (ICPE-9000 manufactured by Shimadzu Corporation) for the measurement. Show the values of the potassium content measured in this way in the column of "Potassium Content in the Non-volatile Components of the Treatment Agent" in Table 2.

[0140] [Table 1]

[0141]

[0142]

[0143] [Table 2]

[0144]

[0145] The details of the smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), diol compound (D), antioxidant (E), and other components (F) recorded in Table 1 are as described below.

[0146] <Smoothing Agent (A)>

[0147] (Full Ester Compound (A1))

[0148] A1-1: Trimethylolpropane trioleate

[0149] A1-2: Triester of trimethylolpropane and coconut oil fatty acids

[0150] A1-3: Triester of glycerol and oleic acid

[0151] (including sulfur ester compound (A2))

[0152] A2-1: Bis(isostearyl) thiodipropionate

[0153] A2-2: Bis(isopalmitoyl) thiodipropionate

[0154] A2-3: Bis(isotetradecyl) thiodipropionate

[0155] (Other smoothing agents (A3))

[0156] A3-1: Isostearyl erucate

[0157] A3-2: Oleyl oleate

[0158] A3-3: Dioleyl adipate

[0159] <Non-ionic surfactant (B)>

[0160] (Nitrogen-containing non-ionic surfactant (B1))

[0161] B1-1: Compound formed by adding 3 moles of EO to 1 mole of laurylamine

[0162] B1-2: Compound formed by adding 10 moles of EO to 1 mole of laurylamine

[0163] B1-3: Compound formed by adding 10 moles of EO to 1 mole of stearylamine

[0164] (Other non-ionic surfactants (B2))

[0165] B2-1: Compound formed by adding 12 moles of EO to 1 mole of coconut oil fatty acids

[0166] B2-2: Compound formed by adding 15 moles of EO to 1 mole of oleyl alcohol

[0167] B2-3: Compound formed by adding 8 moles of EO and 10 moles of propylene oxide (hereinafter referred to as PO) to 1 mole of isostearyl alcohol (random addition)

[0168] B2-4: Diester of polyethylene glycol (weight-average molecular weight 600) and oleic acid

[0169] B2-5: Sorbitan monooleate

[0170] B2-6: An esterified product of 1 mole of a compound formed by adding 25 moles of EO to 1 mole of hydrogenated castor oil and 2 moles of lauric acid

[0171] B2-7: A condensate of a compound formed by adding 15 moles of EO to 1 mole of hydrogenated castor oil, adipic acid, and stearic acid (weight-average molecular weight 6000)

[0172] B2-8: A compound formed by adding 8 moles of EO to 1 mole of castor oil

[0173] B2-9: A compound formed by adding 12 moles of EO to 1 mole of hydrogenated castor oil

[0174] B2-10: A compound formed by adding 10 moles of EO and 15 moles of PO to 1 mole of hydrogenated castor oil (random addition)

[0175] B2-11: An esterified product of 1 mole of a compound formed by adding 20 moles of EO to 1 mole of castor oil and 3 moles of oleic acid

[0176] <Ionic surfactant (C)>

[0177] (Organic sulfonic acid compound (C1))

[0178] C1-1: A compound (mixture) in which the value of a + b in the general formula (1) is 11 or more and 14 or less, and M 1 is Na

[0179] C1-2: A compound (mixture) in which the value of a + b in the general formula (1) is 9 or more and 12 or less, and M 1 is Na

[0180] C1-3-a: R in the general formula (3) 1 has 14 carbon atoms, and M 4 is Na

[0181] C1-3-b: R in the general formula (4) 2 has 14 carbon atoms, and M 5 is Na

[0182] C1-3-c: R in the general formula (3) 1 has 14 carbon atoms, and M 4 is K

[0183] C1-3-d: R in the general formula (4) 2 has 14 carbon atoms, and M 5 is K

[0184] C1-4-a: R in General Formula (3) 1 has 14 or more and 18 or fewer carbon atoms, M 4 is a compound (mixture) of Na

[0185] C1-4-b: R in General Formula (4) 2 has 14 or more and 18 or fewer carbon atoms, M 5 is a compound (mixture) of Na

[0186] C1-5: The value of a + b in General Formula (1) is 11 or more and 14 or fewer, M 1 is a compound (mixture) of tetrabutylphosphonium

[0187] C1-6: Sodium 1-decanesulfonate

[0188] (Organic sulfonic acid compound (C2))

[0189] C2-1: The value of c + d + e in General Formula (2) is 10 or more and 13 or fewer, M 2 , M 3 is a compound (mixture) of Na

[0190] C2-2: The value of c + d + e in General Formula (2) is 8 or more and 11 or fewer, M 2 , M 3 is a compound (mixture) of Na

[0191] C2-3-a: R in General Formula (5) 3 has 14 carbon atoms, M 6 , M 7 is a compound of Na

[0192] C2-3-b: R in General Formula (5) 3 has 14 carbon atoms, M 6 , M 7 is a compound of K

[0193] C2-4: R in General Formula (5) 3 has 14 or more and 18 or fewer carbon atoms, M 6 , M 7 is a compound of Na

[0194] C2-5: The value of c + d + e in General Formula (2) is 10 or more and 13 or fewer, M 2 , M 3 is a compound (mixture) of tetrabutylphosphonium

[0195] (Other ionic surfactants (C3))

[0196] C3-1: Potassium ricinoleate

[0197] C3-2: Potassium oleate

[0198] C3-3: Potassium oleoyl sarcosinate

[0199] C3-4: Isocetyl phosphate - potassium salt

[0200] C3-5: 2-Ethylhexyl phosphate - dibutylethanolamine salt

[0201] C3-6: Oleoyl phosphate - lauryl amino ether (EO 5 moles) salt

[0202] C3-7: Isocetyl phosphate - lauryl amino ether (EO 10 moles) salt

[0203] <Diol compound (D)>

[0204] D-1: Ethylene glycol

[0205] D-2: Polyethylene glycol (weight average molecular weight 200)

[0206] D-3: Polyethylene glycol (weight average molecular weight 400)

[0207] <Antioxidant (E)>

[0208] E-1: 1,3,5-Tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione

[0209] E-2: 1,1,3-Tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane

[0210] E-3: N-Dinonyldiphenylamine

[0211] <Other components (F)>

[0212] F-1: Potassium lactate

[0213] F-2: Tripotassium phosphate

[0214] It should be noted that the weight average molecular weight of the compound of B2-7 above is determined by gel permeation chromatography using polystyrene as the reference substance, and the weight average molecular weight of polyethylene glycol is determined by gel permeation chromatography using polyethylene glycol as the reference substance.

[0215] Test group 2 (Evaluation 1: Stick Slip of tension)

[0216] The freshly prepared treatment agents were diluted with a diluting solvent of an organic solvent (a mixed solvent of n - hexane and ethanol) to make a 15% dilution of the treatment agent. The above dilution was applied to 1000 dtex, 126 - filament, undyed polyethylene terephthalate fibers with an intrinsic viscosity of 0.93 in an amount of 5.0% based on the non - volatile component by the guided oil - feeding method as the evaluation yarns.

[0217] Under the conditions of an initial tension of 2 kg and a yarn speed of 0.1 m / min, the evaluation yarns were brought into contact with a satin - finished chrome pin with a surface temperature of 240 °C, and the tension after rubbing against the satin - finished chrome pin was measured. The time until the stick - slip of the tension occurred was evaluated according to the following criteria. The results are shown in the "Evaluation 1" column of Table 2. It should be noted that stick - slip is a phenomenon observed due to the continuous and alternating sharp increase and decrease of tension, which is different from the phenomenon of the tension gradually increasing with the accumulation of tar. Stick - slip is caused by the accumulation of tar that generates strong friction such as the movement of the yarn being stationary.

[0218] · Evaluation criteria for stick - slip of tension

[0219] ◎◎◎ (Extraordinarily excellent): 10 hours or more

[0220] ◎◎ (Excellent): 6 hours or more and less than 10 hours

[0221] ◎ (Good): 3 hours or more and 6 hours

[0222] ○ (Qualified): 1 hour or more and less than 3 hours

[0223] × (Unqualified): Less than 1 hour

[0224] Test group 3 (Evaluation 2: Tar cleanability)

[0225] Similar to Test group 2, the dilution of each treatment agent was applied to polyethylene terephthalate fibers in an amount of 5.0% based on the non - volatile component by the guided oil - feeding method as the evaluation yarns.

[0226] Under the conditions of an initial tension of 1.5 kg and a yarn speed of 0.1 m / min, the evaluation yarns were brought into contact with a satin - finished chrome pin with a surface temperature of 240 °C and moved for 12 hours. A cotton swab impregnated with a glycerol solution prepared to be 1% NaOH was used to wipe the brown tar attached to the moving position of the fiber and its surroundings at 180 °C, and the number of round - trip wipes until the brown tar disappeared was measured. The tar cleanability was evaluated according to the following criteria. The results are shown in the "Evaluation 2" column of Table 2.

[0227] · Evaluation criteria for tar cleanability

[0228] ◎◎◎(Especially excellent): Less than 50 times

[0229] ◎◎(Excellent): More than 50 times and less than 100 times

[0230] ◎(Good): More than 100 times and less than 150 times

[0231] ○(Qualified): More than 150 times and less than 200 times

[0232] ×(Unqualified): More than 200 times

[0233] As can be seen from the results in Table 2, in the treatment agents of each example, the evaluation of the stick-slip of the tension and the tar cleaning property are both qualified or above. According to the present invention, the cleaning property of the tar adhering to the roller during the use of the treatment agent can be improved. In addition, after the treatment agent adheres to the fiber, the accumulation of tar in each device can be reduced.

Claims

1. A treating agent for synthetic fibers, which contains a lubricant (A), a nonionic surfactant (B), and an ionic surfactant (C). The ionic surfactant (C) includes an organic sulfonic acid compound (C1) having 1 sulfo group in the molecule and an organic sulfonic acid compound (C2) having 2 or more sulfo groups in the molecule. The treating agent for synthetic fibers is characterized in that the mass ratio of the organic sulfonic acid compound (C1) to the organic sulfonic acid compound (C2) is C1 / C2 = 99 / 1 to 80 / 20, the potassium content detected from the non-volatile components of the treating agent for synthetic fibers by ICP emission spectrometry is 0.1 ppm or more and 300 ppm or less.

2. The treating agent for synthetic fibers according to claim 1, wherein The lubricant (A) further contains the following complete ester compound (A1), Complete ester compound (A1): A complete ester compound of a polyhydric alcohol and a monobasic fatty acid.

3. The treating agent for synthetic fibers according to claim 1, wherein The lubricant (A) further contains a sulfur-containing ester compound (A2).

4. The treating agent for synthetic fibers according to claim 1, wherein, The nonionic surfactant (B) further contains a nitrogen-containing nonionic surfactant (B1).

5. The treating agent for synthetic fibers according to claim 1, which further contains a diol compound (D).

6. The treating agent for synthetic fibers according to claim 1, which further contains an antioxidant (E).

7. A synthetic fiber, characterized in that, It is attached with the treating agent for synthetic fibers according to any one of claims 1 to 6.

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