Composition containing synthetic fiber treatment agent for spinning process, synthetic fiber, and synthetic fiber treatment method

Abstract

The present invention addresses the problem of providing a composition containing a synthetic fiber treatment agent for a spinning step, which can improve the storage stability of a composition containing a synthetic fiber treatment agent for a spinning step and a diluent, and can improve the manufacturability of fibers to which the synthetic fiber treatment agent for a spinning step is applied. This composition containing a synthetic fiber treatment agent for a spinning step contains a solvent and a synthetic fiber treatment agent for a spinning step, and the synthetic fiber treatment agent for a spinning step contains a predetermined amount of a nonionic surfactant, a predetermined amount of an ionic surfactant, and an organic preservative. And optionally and selectively contains a predetermined amount of smoothing agent, and the solvent contains water. When 100 parts by mass of the synthetic fiber treatment agent for the spinning step is taken, the composition containing the synthetic fiber treatment agent for the spinning step contains 0.1 parts by mass or more and less than 20 parts by mass of the solvent. The synthetic fiber treatment agent for a spinning step has a bromine element content of more than 0 ppm and 300 ppm or less.

Description

Technical Field

[0001] The present invention relates to a composition containing a synthetic fiber treatment agent for a spinning process, which can improve storage stability, and a synthetic fiber and a treatment method thereof that can improve manufacturability. Background Art

[0002] Generally, in the spinning process of synthetic fibers, from the viewpoints of reducing friction and fiber damage such as broken filaments, a treatment of attaching a treatment agent for synthetic fibers to the surface of synthetic fibers is sometimes performed.

[0003] Currently, a treatment agent emulsion for synthetic fibers disclosed in Patent Document 1 is known. Patent Document 1 discloses a treatment agent emulsion for synthetic fibers. When the treatment agent for synthetic fibers is 100 parts by mass, it contains 20 to 100,000 parts by mass of water. The treatment agent for synthetic fibers contains 40 to 75% by mass of a smoothing agent, 25 to 60% by mass of a surfactant, and 0.0005 to 0.01% by mass of a preservative, and is characterized in that the dissolved oxygen concentration is 10 mg / L or less or the gas generation amount is 10 mL / L or less. Prior Art Documents Patent Documents

[0004] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2017-106148 Summary of the Invention Problems to be Solved by the Invention

[0005] However, in conventional treatment agents for synthetic fibers, a composition containing a treatment agent for synthetic fibers that is intended to be stored for a long time and contains a small amount of a solvent, and a dilution obtained by further diluting the composition with a solvent have insufficient storage stability. In addition, there are also problems such as insufficient manufacturability of the spinning property or false twist processability of fibers to which the treatment agent for synthetic fibers is applied. Means for Solving the Problems

[0006] The present inventors conducted research to solve the above problems and found that a particularly good effect is achieved by mixing a predetermined amount of a nonionic surfactant, an ionic surfactant, and a solvent in a composition containing a synthetic fiber treatment agent for a spinning process containing a solvent, and defining the content of bromine element within a predetermined range.

[0007] Various means for solving the above problems are described. Method 1 is a composition containing a synthetic fiber treatment agent for the spinning process, which contains a synthetic fiber treatment agent for the spinning process and a solvent. The above-mentioned synthetic fiber treatment agent for the spinning process contains a nonionic surfactant, an ionic surfactant, and an organic preservative, and optionally contains a smoothing agent. The above-mentioned solvent contains water. It is characterized in that in the above-mentioned synthetic fiber treatment agent for the spinning process, when the total content of the above-mentioned nonionic surfactant, the above-mentioned ionic surfactant, and the above-mentioned smoothing agent is set to 100 parts by mass, the synthetic fiber treatment agent for the spinning process contains 10 parts by mass or more and 99.8 parts by mass or less of the above-mentioned nonionic surfactant, 0.01 parts by mass or more and 20 parts by mass or less of the above-mentioned ionic surfactant, and 80 parts by mass or less of the above-mentioned smoothing agent; when the above-mentioned synthetic fiber treatment agent for the spinning process is set to 100 parts by mass, the composition containing the synthetic fiber treatment agent for the spinning process contains 0.1 parts by mass or more and less than 20 parts by mass of the above-mentioned solvent; in the above-mentioned synthetic fiber treatment agent for the spinning process, the content of bromine element is greater than 0 ppm and 300 ppm or less.

[0008] Method 2 is a composition containing a synthetic fiber treatment agent for the spinning process as described in Method 1, wherein in the above-mentioned synthetic fiber treatment agent for the spinning process, the content of bromine element is 0.1 ppm or more and 180 ppm or less. Method 3 is a composition containing a synthetic fiber treatment agent for the spinning process as described in Method 1 or 2, wherein the above-mentioned synthetic fiber treatment agent for the spinning process does not contain the above-mentioned smoothing agent; the above-mentioned ionic surfactant contains at least one selected from carboxylates, organic sulfonates, and organic phosphates.

[0009] Method 4 is a composition containing a synthetic fiber treatment agent for the spinning process as described in Method 3, wherein in the above-mentioned synthetic fiber treatment agent for the spinning process, when the total content of the above-mentioned nonionic surfactant and the above-mentioned ionic surfactant is set to 100 parts by mass, the synthetic fiber treatment agent for the spinning process contains 0.001 parts by mass or more and 1 part by mass or less of the above-mentioned organic preservative.

[0010] Method 5 is a composition containing a synthetic fiber treatment agent for the spinning process as described in Method 1 or 2, wherein the above-mentioned synthetic fiber treatment agent for the spinning process contains the above-mentioned smoothing agent; the above-mentioned smoothing agent contains an ester compound formed by an aliphatic alcohol and a fatty acid, and the above-mentioned ionic surfactant contains at least one selected from carboxylates, organic sulfonates, and organic phosphates.

[0011] Mode 6 is a composition containing a synthetic fiber treatment agent for the spinning process as described in Mode 5. In the synthetic fiber treatment agent for the spinning process, when the total content of the nonionic surfactant, the ionic surfactant, and the smoothing agent is set to 100 parts by mass, the synthetic fiber treatment agent for the spinning process contains 0.001 part by mass or more and 1 part by mass or less of the organic preservative.

[0012] Mode 7 is a synthetic fiber, characterized in that it is attached with the synthetic fiber treatment agent for the spinning process according to any one of Modes 1 to 6. Mode 8 is a method for treating synthetic fibers, characterized in that the synthetic fiber treatment agent for the spinning process according to any one of Modes 1 to 6 is attached to the synthetic fibers in an amount of 0.1% by mass or more and 5% by mass or less. Effect of the Invention

[0013] According to the present invention, it is possible to improve the storage stability of the composition and the dilution liquid containing the synthetic fiber treatment agent for the spinning process, and it is possible to improve the manufacturability of the fibers to which the synthetic fiber treatment agent for the spinning process is imparted. Detailed Embodiment

[0014] <First Embodiment> The following describes the first embodiment in which the composition containing the synthetic fiber treatment agent for the spinning process of the present invention (hereinafter referred to as the composition containing the treatment agent) is embodied. The composition containing the treatment agent of this embodiment contains a synthetic fiber treatment agent for the spinning process (hereinafter referred to as the treatment agent) and a solvent. The treatment agent contains a nonionic surfactant, an ionic surfactant, an organic preservative, and optionally contains a smoothing agent. The solvent contains water.

[0015] (Nonionic Surfactant) The treatment agent contains a nonionic surfactant. By including a nonionic surfactant in the treatment agent, the manufacturability of the fibers to which the treatment agent is imparted can be improved. In addition, the emulsifiability of the dilution liquid obtained by diluting the composition containing the treatment agent with a solvent can be improved.

[0016] Examples of the nonionic surfactant include compounds having a (poly)oxyalkylene structure formed by adding an alkylene oxide to an alcohol or a carboxylic acid, ether - ester compounds having a (poly)oxyalkylene structure formed by adding an alkylene oxide to an ester compound formed by a carboxylic acid and a polyol, compounds formed by adding an alkylene oxide to a natural oil or a carboxylic acid or compounds obtained by esterifying the compound with a carboxylic acid, compounds having a (poly)oxyalkylene structure formed by adding an alkylene oxide to an amine compound, compounds having a (poly)oxyalkylene structure formed by adding an alkylene oxide to fatty acid amides, amide compounds formed by condensing an amine compound and a carboxylic acid, and the like.

[0017] Specific examples of the alcohols used as raw materials for nonionic surfactants include, for example, (1) straight-chain alkanols 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 alkanols such as isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isopentadecanol, isohexadecanol, isheptadecanol, isooctadecanol, isononadecanol, isoeicosanol, isheneicosanol, isodocosanol, isotricosanol, isotetracosanol, isopentacosanol, isohexacosanol, isheptacosanol, isooctacosanol, isononacosanol, isotriacontanol; (3) straight-chain alkenols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, nonadecenol; (4) branched-chain alkenols such as isohexadecenol, isooctadecenol; (5) cyclic alkanols such as cyclopentanol, cyclohexanol; (6) aromatic alcohols such as phenol, nonylphenol, benzyl alcohol, monophenylated phenol, diphenylated phenol, triphenylated phenol, etc.

[0018] Specific examples of the carboxylic acids used as raw materials for nonionic surfactants include, for example, (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; (6) natural fatty acids such as ricinoleic fatty acid, sesame fatty acid, rosin fatty acid, soybean fatty acid, rapeseed oil fatty acid, palm oil fatty acid, palm kernel fatty acid, coconut oil fatty acid, etc.

[0019] The alkylene oxide used as a raw material for forming a (poly)oxyalkylene structure in the nonionic surfactant is preferably an alkylene oxide having 2 to 4 carbon atoms. Specific examples of the alkylene oxide include, for example, ethylene oxide, propylene oxide, butylene oxide, etc. The molar number of addition of the alkylene oxide can be appropriately set, preferably 0.1 mol or more and 250 mol or less, more preferably 1 mol or more and 200 mol or less, and most preferably 2 mol or more and 150 mol or less. It can also be in the range of any combination of the above upper and lower limits. Herein, the molar number of addition of the alkylene oxide represents the molar number of the alkylene oxide relative to 1 mol of the compound to be added in the charged raw materials. The alkylene oxide can be used alone or in combination of two or more appropriately. When two or more types of alkylene oxides are used, 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.

[0020] Specific examples of the polyhydric alcohol used as a raw material for the nonionic surfactant 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, glycerin, diglycerin, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitan, pentaerythritol, sorbitol, etc.

[0021] Specific examples of the amine compound used as a raw material for the nonionic surfactant include, for example, aliphatic amines such as methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine (stearylamine), octadecenylamine, coconut amine, and alkanolamines such as monoethanolamine and diethanolamine.

[0022] Specific examples of the fatty acid amide used as a raw material for the nonionic surfactant include, for example, octanoic acid amide, lauric acid amide, palmitic acid amide, stearic acid amide, oleic acid amide, montanic acid amide, lignoceric acid amide, etc.

[0023] Specific examples of the nonionic surfactant include, for example, polyoxyalkylene lauryl ether, polyoxyalkylene butyl ether, polyoxyalkylene nonyl ether, polyoxyalkylene oleate, polyoxyalkylene hydrogenated castor oil ether trioleate, polyoxyalkylene octyl ether palmitate, diethanolamine oleic acid amide, etc.

[0024] These nonionic surfactants can be used alone or in combination of two or more appropriately. In the treatment agent, the lower limit of the content ratio of the nonionic surfactant is preferably 10% by mass or more, more preferably 20% by mass or more. The upper limit of the content ratio of the nonionic surfactant is preferably 99.8% by mass or less, more preferably 99.2% by mass or less. By defining it within this content ratio range, the manufacturability of the fiber to which the treatment agent is imparted can be improved. In addition, the emulsifiability of the dilution obtained by diluting the composition containing the treatment agent with a solvent can be improved. Among them, it may also be a range of any combination of the above upper and lower limits. Among them, the treatment agent composed of the remaining non-volatile components can be obtained by heating the composition containing the treatment agent at 105 °C for 2 hours to volatilize the solvent in the composition containing the treatment agent.

[0025] (Ionic surfactant) The treatment agent contains an ionic surfactant. By including an ionic surfactant in the treatment agent, the manufacturability of the fiber to which the treatment agent is imparted can be improved. In addition, the emulsifiability of the dilution obtained by diluting the composition containing the treatment agent with a solvent can be improved.

[0026] The ionic surfactant used in the treatment agent of the present embodiment can be appropriately selected from known ones. Examples of the ionic surfactant include anionic surfactants, cationic surfactants, and amphoteric surfactants.

[0027] Anionic surfactants may be appropriately those known in the art. Specific examples of anionic surfactants include, for example, (1) phosphate esters of aliphatic alcohols such as lauryl phosphate, cetyl phosphate, isocetyl phosphate, octyl phosphate, oleyl phosphate, stearyl phosphate, isostearyl phosphate; (2) phosphate esters of those obtained by adding at least one alkylene oxide selected from ethylene oxide and propylene oxide to aliphatic alcohols, such as polyoxyethylene lauryl ether phosphate, polyoxyethylene oleyl ether phosphate, polyoxyethylene stearyl ether phosphate; (3) organic sulfonates such as aliphatic sulfonates like lauryl sulfonate, myristyl sulfonate, cetyl sulfonate, oleyl sulfonate, stearyl sulfonate, tetradecyl sulfonate, secondary alkane (having 13 to 15 carbon atoms) sulfonate, secondary alkane (having 11 to 14 carbon atoms) sulfonate, secondary alkane (having 12 to 15 carbon atoms) sulfonate, α-olefin sulfonate, and aromatic sulfonates like dodecylbenzenesulfonate; (4) sulfate esters of aliphatic alcohols such as lauryl sulfate, oleyl sulfate, stearyl sulfate; (5) sulfate esters of those obtained by adding at least one alkylene oxide selected from ethylene oxide and propylene oxide to aliphatic alcohols, such as polyoxyethylene lauryl ether sulfate, polyoxyalkylene (polyoxyethylene, polyoxypropylene) lauryl ether sulfate, polyoxyethylene oleyl ether sulfate; (6) sulfate esters of fatty acids derived from natural sources such as castor oil fatty acid sulfate, sesame oil fatty acid sulfate, rosin oil fatty acid sulfate, soybean oil fatty acid sulfate, rapeseed oil fatty acid sulfate, palm oil fatty acid sulfate; (7) sulfate esters of natural oils such as castor oil sulfate, sesame oil sulfate, rosin oil sulfate, soybean oil sulfate, rapeseed oil sulfate, palm oil sulfate; (8) carboxylates such as 2-ethylhexanoate, laurate, oleate, stearate; (9) sulfosuccinate esters of aliphatic alcohols such as dioctyl sulfosuccinate; (10) alkenyl succinates such as docosenyl succinate. Counter ions of anionic surfactants include, for example, alkali metal salts such as potassium salts and sodium salts, ammonium salts, triethanolamine salts, (poly)oxyalkylene alkylamine salts, alkanolamine salts such as dibutylethanolamine salts, etc.

[0028] Specific examples of cationic surfactants include, for example, lauryl trimethylammonium chloride, cetyl trimethylammonium chloride, stearyl trimethylammonium chloride, behenyl trimethylammonium chloride, dicetyl dimethylammonium chloride, etc.

[0029] Specific examples of amphoteric surfactants include, for example, betaine-type amphoteric surfactants. These ionic surfactants may be used alone or in appropriate combination of two or more.

[0030] Among them, when the composition containing the treatment agent is used for spinning draw applications (FDY) or spinning - false twist processing applications (POY - DTY), the ionic surfactant preferably contains at least one selected from the organic phosphate salts exemplified in the above (1) and (2), the organic sulfonates exemplified in the above (3), and the carboxylates exemplified in the above (8). By applying this compound, the spinnability or false twist processability, etc., of the fibers to which the treatment agent is imparted can be further improved.

[0031] Specific examples of the ionic surfactant include, for example, oleate, dodecenyl succinate, dioctyl sulfosuccinate, secondary alkane (carbon atoms 12 - 15) sulfonate, polyoxyalkylene oil ether phosphate salt, isocetyl phosphate salt, lauryl sulfate, etc.

[0032] In the treatment agent, the lower limit of the content ratio of the ionic surfactant is preferably 0.01% by mass or more, more preferably 0.1% by mass or more. The upper limit of the content ratio of the ionic surfactant is preferably 20% by mass or less, more preferably 15% by mass or less. By defining it within this content ratio range, the processability of the fibers to which the treatment agent is imparted can be improved. In addition, the emulsifiability of the dilution of the composition containing the treatment agent can be improved. Among them, it can also be in the range of any combination of the above upper and lower limits.

[0033] (Lubricant) The treatment agent may be mixed with a lubricant as required. Especially when the composition containing the treatment agent is used for the spinning draw application (FDY) of flat yarn (Flatyarn), the treatment agent is mixed with a lubricant. Among them, when the composition containing the treatment agent is used for the spinning - false twist processing application (POY - DTY) of processed yarn (such as false twist processed yarn (DTY)), the treatment agent does not necessarily need to be mixed with a lubricant. Examples of the lubricant include, for example, ester oil, mineral oil, polyolefin, etc.

[0034] There is no particular limitation on the ester oil, and ester oils produced from fatty acids and alcohols can be cited. For example, ester oils are produced from fatty acids having odd - numbered or even - numbered hydrocarbon groups and alcohols.

[0035] Regarding the fatty acid as a raw material of the ester oil, there is no particular limitation on the number of carbon atoms, presence or absence of a branched chain, valence, etc. In addition, it can be, for example, a higher fatty acid, a fatty acid having a ring, a fatty acid having an aromatic ring. Regarding the alcohol as a raw material of the ester oil, there is no particular limitation on the number of carbon atoms, presence or absence of a branched chain, valence, etc. In addition, it can be, for example, an aliphatic alcohol, an alcohol having a ring, an alcohol having an aromatic ring.

[0036] Specific examples of the ester oil include, for example, (1) ester compounds formed from aliphatic monohydric alcohols and aliphatic monocarboxylic acids such as octyl palmitate, dodecyl oleate, oleyl laurate, oleyl oleate, isotridecyl stearate, isocetyl oleate, etc.; (2) ester compounds formed from aliphatic polyhydric alcohols and aliphatic monocarboxylic acids such as 1,6 - hexanediol didecanoate, glycerin dioleate, glycerin trioleate, trimethylolpropane trilaurate, trimethylolpropane trioleate, the triester formed from trimethylolpropane and coconut fatty acids, sorbitan monooleate, sorbitan trioleate, pentaerythritol tetraoctanoate, etc.; (3) ester compounds formed from aliphatic monohydric alcohols and aliphatic polycarboxylic acids such as diisostearyl adipate, dioleyl azelate, diisostearyl thiodipropionate, dioleyl thiodipropionate, diisocetyl thiodipropionate, etc.; (4) ester compounds formed from aromatic monohydric alcohols and aliphatic monocarboxylic acids such as benzyl oleate, benzyl laurate, etc.; (5) ester compounds formed from aromatic polyhydric alcohols and aliphatic monocarboxylic acids such as bisphenol A dilaurate, etc.; (6) ester compounds formed from aliphatic monohydric alcohols and aromatic polycarboxylic acids such as bis(2 - ethylhexyl) phthalate, diisostearyl isophthalate, trioctyl trimellitate, etc.; (7) natural oils such as coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, fish oil, and beef tallow, etc.

[0037] Mineral oils include, for example, aromatic hydrocarbons, paraffinic hydrocarbons, naphthenic hydrocarbons, etc. More specifically, examples include spindle oil, liquid paraffin, etc. These mineral oils can also be appropriately commercially available products.

[0038] Polyolefins applicable as the smoothing component are poly - α - olefins. Specific examples of polyolefins include, for example, poly - α - olefins polymerized from 1 - butene, 1 - hexene, 1 - decene, etc. Poly - α - olefins can be appropriately commercially available products.

[0039] These smoothing agents can be used alone or in combination of two or more. Among them, when the composition containing the treatment agent is used for the spinning draw - texturing application (FDY), the smoothing agent preferably contains an ester compound prepared from aliphatic alcohols and fatty acids. By using this compound, the spinnability in the spinning draw - texturing application (FDY) can be improved.

[0040] When the treatment agent uses a smoothing agent, the upper limit of the content ratio of the smoothing agent in the treatment agent is preferably 80% by mass or less, more preferably 77% by mass or less. When the composition containing the treatment agent is used for the spinning draw - texturing application (FDY) of flat yarn, the lower limit of the content ratio of the smoothing agent is preferably 10% by mass or more, more preferably 20% by mass or more. By defining within this range, the spinnability of the fiber to which the treatment agent is applied can be improved. Among them, it can also be the range of any combination of the above - mentioned upper and lower limits.

[0041] When the total content of the above nonionic surfactant, the above ionic surfactant, and the above smoothing agent in the treatment agent is set to 100 parts by mass, the treatment agent contains 10 parts by mass or more and 99.8 parts by mass or less of the above nonionic surfactant, 0.01 parts by mass or more and 20 parts by mass or less of the above ionic surfactant, and 80 parts by mass or less of the above smoothing agent. By defining within this range of content ratios, the manufacturability of the fibers to which the treatment agent is applied can be improved. In addition, the emulsifiability of the diluent obtained by diluting the composition containing the treatment agent with a solvent can be improved.

[0042] (Organic preservative) The composition containing the treatment agent of the present embodiment contains an organic preservative. Examples of the organic preservative include isothiazolinone-based preservatives, triazine-based preservatives, bromine-based preservatives, nitrochlorine-based preservatives, thiocyanate-based preservatives, and the like.

[0043] Specific examples of the isothiazolinone-based preservative include, for example, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-butyl-3-isothiazolinone, 2-n-octyl-4-isothiazolin-3-one, 2-benzyl-3-isothiazolinone, 2-phenyl-3-isothiazolinone, 2-methyl-4,5-dichloro isothiazolinone, 5-chloro-2-methyl-3-isothiazolinone, 2-methyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-methyl-4,5-propylene-4-isothiazolin-3-one, and the like.

[0044] Specific examples of the triazine-based preservative include, for example, hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine, hexahydro-1,3,5-triethyl-s-triazine, and the like.

[0045] Specific examples of the bromine-based preservative, which is an organic preservative having a bromine group, include, for example, 5-bromo-5-nitro-1,3-dioxane, 2-bromo-2-nitropropane-1,3-diol, nitro-bromo-based preservatives such as 2,2-dibromo-2-nitromethanol, and cyano-bromo-based preservatives such as 2,2-dibromo-3-nitropropanamide. Specific examples of the nitrochlorine-based preservative include, for example, 5-chloro-5-nitro-1,3-dioxane, 2-chloro-2-nitropropane-1,3-diol, and the like.

[0046] Specific examples of the nitrochlorine-based preservative include, for example, 5-chloro-5-nitro-1,3-dioxane, 2-chloro-2-nitropropane-1,3-diol, and the like. Specific examples of the nitrochlorine-based preservative include, for example, 5-chloro-5-nitro-1,3-dioxane, 2-chloro-2-nitropropane-1,3-diol, and the like. Specific examples of the thiocyanate-based preservative include, for example, methylene bisthiocyanate, and the like.

[0047] In the treatment agent, the lower limit of the content ratio of the organic preservative is preferably 0.0001% by mass or more, more preferably 0.001% by mass or more. When the content ratio is 0.0001% by mass or more, the storage stability of the diluted solution obtained by diluting the composition containing the treatment agent with a solvent can be further improved. The upper limit of the content ratio of the organic preservative is preferably 1% by mass or less, more preferably 0.5% by mass or less. When the content ratio is 1% by mass or less, the storage stability of the composition containing the treatment agent can be further improved. Among them, the range can also be any combination of the above upper and lower limits.

[0048] When the treatment agent does not contain a leveling agent, when the total content of the above nonionic surfactant and the above ionic surfactant in the treatment agent is set to 100 parts by mass, the lower limit of the content of the organic preservative in the treatment agent is preferably 0.0001 part by mass or more, more preferably 0.001 part by mass or more. When the content of the organic preservative is 0.0001 part by mass or more, the storage stability of the diluted solution obtained by diluting the composition containing the treatment agent with a solvent can be further improved. When the treatment agent does not contain a leveling agent, when the total content of the above nonionic surfactant and the above ionic surfactant in the treatment agent is set to 100 parts by mass, the upper limit of the content of the organic preservative in the treatment agent is preferably 1 part by mass or less, more preferably 0.5 part by mass or less. When the content is 1 part by mass or less, the storage stability of the composition containing the treatment agent can be further improved. Among them, the range can also be any combination of the above upper and lower limits.

[0049] When the treatment agent contains a leveling agent, when the total content of the above nonionic surfactant, the above ionic surfactant, and the above leveling agent in the treatment agent is set to 100 parts by mass, the lower limit of the content of the organic preservative in the treatment agent is preferably 0.0001 part by mass or more, more preferably 0.001 part by mass or more. When the content of the organic preservative is 0.0001 part by mass or more, the storage stability of the diluted solution obtained by diluting the composition containing the treatment agent with a solvent can be further improved. When the treatment agent contains a leveling agent, when the total content of the above nonionic surfactant, the above ionic surfactant, and the above leveling agent in the treatment agent is set to 100 parts by mass, the upper limit of the content of the organic preservative in the treatment agent is preferably 1 part by mass or less, more preferably 0.5 part by mass or less. When the content is 1 part by mass or less, the storage stability of the composition containing the treatment agent can be further improved. Among them, the range can also be any combination of the above upper and lower limits.

[0050] (Solvent) The solvent used in the composition containing the treatment agent of the present embodiment contains water. The boiling point of the solvent at atmospheric pressure is preferably 105 °C or lower. The atmospheric pressure in this specification refers to the standard atmospheric pressure (101325 Pa = 1 atm). The solvent may contain an organic solvent in addition to water. Specific examples of the organic solvent include lower alcohols such as methanol, ethanol, and propanol, or low-polarity solvents such as hexane. These solvents may be used alone in one type, or two or more types may be used in appropriate combination. Among them, from the viewpoint of excellent dispersibility or solubility of each component, polar solvents such as water and lower alcohols are preferred, and from the viewpoint of excellent operability, water is more preferred.

[0051] In the composition containing the treatment agent, the lower limit of the content ratio of the solvent is 0.1 part by mass or more, preferably 1 part by mass or more, relative to 100 parts by mass of the treatment agent. When the content ratio of the solvent is 0.1 part by mass or more, the manufacturability of the fiber to which the treatment agent is imparted can be improved. In the composition containing the treatment agent, the upper limit of the content ratio of the solvent is less than 20 parts by mass, preferably 18 parts by mass or less, relative to 100 parts by mass of the treatment agent. When the content ratio of the solvent is less than 20 parts by mass, the storage stability of the composition containing the treatment agent can be improved. Among them, the range of any combination of the above upper and lower limits is also possible.

[0052] (Other) The lower limit of the content of bromine element in the treatment agent is greater than 0 ppm, preferably 0.1 ppm or more. When the lower limit of the content of the bromine element is greater than 0 ppm, the storage stability of the dilution obtained by diluting the composition containing the treatment agent with a solvent can be improved. The upper limit of the content of bromine element in the treatment agent is 300 ppm or less, preferably 180 ppm or less. When the upper limit of the content of the bromine element is 300 ppm or less, the storage stability of the composition containing the treatment agent can be improved.

[0053] When the content of bromine element in the treatment agent is 10 ppm or more, the value measured by using fluorescence X-ray analysis is adopted, and when it is less than 10 ppm, the value measured by combustion ion chromatography is adopted. More specifically, the content of bromine element in the treatment agent is measured in the following manner. Specifically, first, 1 g of the composition containing the treatment agent is taken into a petri dish (outer diameter 5 cm, height 15 mm, thickness 0.6 mm), and heat-treated at 105 °C for 2 hours to volatilize the solvent in the composition containing the treatment agent, and the treatment agent composed of the remaining non-volatile components is obtained. Then, a certain amount of the above remaining non-volatile components is taken, and the intensity of the fluorescence X-ray of bromine (Br-Kα line) is measured under vacuum conditions using a fluorescence X-ray analyzer (for example, ZSX Primus: manufactured by Rigaku Corporation). Then, the content of bromine element in the target treatment agent is quantified using a calibration curve made of a treatment agent sample with a known bromine element content.

[0054] <Second Embodiment> 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 may also be a dilution liquid obtained by further diluting the composition containing the treatment agent of the first embodiment with a dilution solvent, such as a low-viscosity mineral oil solution, an organic solvent solution, an aqueous solution, etc. The synthetic fiber is obtained through the following process: in the spinning process, a dilution liquid such as an aqueous solution is attached to the synthetic fiber. The dilution solvent contained in the dilution liquid attached to the synthetic fiber may also be evaporated in the stretching process and the drying process. Here, the concept of the spinning process in this specification includes a spinning and stretching process and a spinning - false twisting process, etc., where the spinning and stretching process includes spinning and the subsequent stretching treatment, and the spinning - false twisting process includes spinning and the subsequent false twisting process that does not go through the stretching treatment.

[0055] Specific examples of the synthetic fiber to which the treatment agent is imparted are not particularly limited, and examples may include (1) polyester fibers such as polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polylactic acid, and composite fibers formed by 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.

[0056] The proportion of attaching the treatment agent to the synthetic fiber is not particularly limited, and preferably, the treatment agent is attached to the synthetic fiber at 0.1% by mass or more and 5% by mass or less (excluding solvents such as water). With this configuration, the effects of the present invention can be further improved. In addition, the method of attaching the treatment agent is not particularly limited, and known methods such as a roller oiling method, a guiding oiling method using a metering pump, an immersion oiling method, and a spray oiling method can be used.

[0057] The effects of the composition containing the treatment agent and the synthetic fiber of the above embodiment will be described. (1) The composition containing the treatment agent of the above embodiment contains a treatment agent and a solvent, where the treatment agent contains a predetermined amount of a nonionic surfactant, a predetermined amount of an ionic surfactant, an organic preservative, and optionally contains a smoothing agent, and the solvent contains water. The content of bromine element in the treatment agent is greater than 0 ppm and 300 ppm or less. Therefore, the storage stability of the composition containing the treatment agent and the dilution liquid for a predetermined long-term storage can be improved. In addition, the manufacturability such as the spinnability or false twisting processability of the fiber to which the treatment agent is imparted can be improved. In addition, the emulsifiability of the dilution liquid obtained by further diluting the composition containing the treatment agent with a solvent can be improved.

[0058] Among them, the above-described embodiments can be modified as follows. The above-described embodiments and the following modification examples can be implemented in combination with each other within a technically non-contradictory range. · Within the range that does not impair the effects of the present invention, the above-described treatment agent, the composition containing the treatment agent, and the diluent can also be further mixed with stabilizers, antistatic agents, linking agents, antioxidants, ultraviolet absorbers, defoaming agents, preservatives other than the above, rust inhibitors, etc. that are generally used for treatment agents during or after the production of the treatment agent to maintain the quality stability of each treatment agent, etc. Examples

[0059] Hereinafter, examples, etc. are given to more specifically illustrate the configuration and effects of the present invention, but the present invention is not limited to these examples. Among them, in the description of the following examples and comparative examples, unless otherwise specified, "parts" means parts by mass and "%" means mass%.

[0060] Test Category 1 (Preparation of Treatment Agent) (Example 1) 11 parts (relative to 100 parts by mass of the treatment agent) of water (S-1) as a solvent was mixed with the treatment agent to prepare a composition containing the treatment agent of Example 1, wherein the treatment agent contained 42 parts of dodecyl oleate (A-2) as a smoothing agent, 12 parts of trimethylolpropane trilaurate (A-3), 4 parts of sorbitan monooleate (A-5), 6 parts of polyoxyethylene (5 moles (indicating the number of moles of alkylene oxide added; the same applies hereinafter)) lauryl ether (B-1) as a nonionic surfactant, 6 parts of polyoxyethylene (6 moles) polyoxypropylene (10 moles) butyl ether (B-2), 12 parts of polyoxyethylene (12 moles) hydrogenated castor oil ether trioleate (B-5), 10 parts of polyoxyethylene (5 moles) octyl ether palmitate (B-6), 2 parts of potassium oleate (C-1) as an ionic surfactant, 3 parts of potassium dodecenyl succinate (C-2), 3 parts of secondary alkane (carbon atoms 12 - 15) sulfonate (C-4), 0.04 part of 2-bromo-2-nitropropane-1,3-diol (DB-1) as an organic preservative, 0.1 part of 1,1,3-tris(2-methyl-4-hydroxy-5-t-butylphenyl)butane (E-1) as other components, and 2 parts of polyether-modified polysiloxane (E-2), and 1 part of ethylene glycol.

[0061] (Examples 2 - 17, Comparative Examples 1 - 8) The treating-agent-containing compositions of Examples 2 to 17 and Comparative Examples 1 to 8 were prepared in the same manner as the treating-agent-containing composition of Example 1, and contain leveling agents, nonionic surfactants, ionic surfactants, organic preservatives, other components, and solvents in the proportions shown in Tables 1 and 2. Among them, the treating-agent-containing composition of Table 1 was prepared as a spinning draw oil agent containing a leveling agent. The treating-agent-containing composition of Table 2 was prepared as a spinning-texturing oil agent without a leveling agent.

[0062] The types and contents of the leveling agents, nonionic surfactants, ionic surfactants, organic preservatives, other components, and solvents are shown in the "Leveling Agent" column, "Nonionic Surfactant" column, "Ionic Surfactant" column, "Organic Preservative" column, "Other Components" column, and "Solvent" column of Tables 1 and 2, respectively. Among them, the content of each component represents the blending amount when the total content of the nonionic surfactant, ionic surfactant, and, if any, the leveling agent is set to 100 parts.

[0063] In addition, the content (ppm) of bromine element in the treating agent was determined from the potassium bromide content ratios of the organic preservatives and other components containing bromine element. The results are shown in the "Content of Bromine Element in Treating Agent" column.

[0064] [Table 1]

[0065] [Table 2]

[0066] The details of the leveling agents, nonionic surfactants, ionic surfactants, organic preservatives, other components, and solvents described in Tables 1 and 2 are as follows. <Leveling Agent> A-1: Octyl palmitate A-2: Dodecyl oleate A-3: Trimethylolpropane trilaurate A-4: Sesame oil A-5: Sorbitan monooleate A-6: Diolein A-7: Mineral oil (30 °C, 47 mm 2 / s) <Nonionic Surfactant> B-1: Polyoxyethylene (5 mol) lauryl ether B-2: Polyoxyethylene (6 mol) polyoxypropylene (10 mol) butyl ether B-3: Polyoxyethylene (6 moles) Polyoxypropylene (4 moles) Nonyl Ether B-4: Polyoxyethylene (5 moles) Oleate B-5: Polyoxyethylene (12 moles) Hydrogenated Castor Oil Ether Trioleate B-6: Polyoxyethylene (5 moles) Octyl Ether Palmitate B-7: Diethanolamine Oleamide <Ionic Surfactant> C-1: Potassium Oleate C-2: Potassium Dodecenyl Succinate C-3: Sodium Dioctyl Sulfosuccinate C-4: Sodium Secondary Alkane (carbon atoms 12 - 15) Sulfonate C-5: Salt formed by Polyoxyethylene (2 moles) Oleyl Ether Phosphate and Polyoxyethylene (2 moles) Lauryl Amine C-6: Salt formed by Isocetyl Phosphate and Potassium c-1: Lauryl Sulfate <Organic Preservative> DB-1: 2 - Bromo - 2 - Nitropropane - 1,3 - Diol DB-2: 2,2 - Dibromo - 3 - Nitropropanamide D-1: 2 - Methyl - 4 - Isothiazolin - 3 - One D-2: 5 - Chloro - 2 - Methyl - 4 - Isothiazolin - 3 - One D-3: 1,2 - Benzisothiazolin - 3 - One D-4: Methylene Bisthiocyanate D-5: Hexahydro - 1,3,5 - Tris(2 - Hydroxyethyl) - S - Triazine <Other Components> E-1: 1,1,3 - Tris(2 - Methyl - 4 - Hydroxy - 5 - t - Butylphenyl) Butane E-2: Polyether Modified Polysiloxane E-3: Ethylene Glycol E-4: Propylene Glycol E-5: Potassium Bromide <Solvent> S-1: Water S-2: Isopropyl Alcohol S-3: Methanol S-4: Ethanol Test Category 2 (Evaluation of Oil Agent Stability) Store the compositions containing the treatment agent prepared by the above method in an incubator at 50 °C for 1 week, visually observe the changes before and after storage, and make a judgment using the following criteria to evaluate the oil agent stability as the storage stability of the composition containing the treatment agent. The results are shown in the "Oil agent stability" columns of Tables 1 and 2.

[0067] · Evaluation criteria for oil agent stability ◎ (Good): No change ○ (Qualified): Slight discoloration, particle generation, or component separation, but it is practically okay × (Unqualified): Obvious discoloration, particle generation, or component separation Test category 3 (Evaluation of emulsifying property) Add ion-exchanged water at 25 °C to a 200 mL beaker, and while stirring with a stirring blade at 550 rpm, dropwise add the composition containing the treatment agent to prepare 100 g of an emulsion as a dilution, where the concentration of the treatment agent is 10% by mass. Visually judge the emulsification state at this time, and evaluate the emulsifying property using the following criteria. The results are shown in the "Emulsifying property" columns of Tables 1 and 2.

[0068] · Evaluation criteria for emulsifying property ○ (Qualified): Uniformly emulsified or dispersed, without suspended matter or sediment × (Unqualified): Not uniformly emulsified or dispersed, with residual suspended matter or sediment Test category 4 (Spinnability) Dry the poly(ethylene terephthalate) sheet material with an inherent viscosity of 0.64 and a titanium oxide content of 0.2% by mass by a predetermined method, then spin it at 295 °C using an extruder, spray it out from a metal opening and cool and solidify it. Then, attach the emulsion as a dilution of the composition containing the treatment agent prepared at a concentration of 10% to the running filament by the guiding oiling method using a metering pump so that the attachment amount of the treatment agent becomes 1.0% by mass. Among them, the composition containing the treatment agent is the spinning extension oil agent shown in Table 1. Then, bundle it using guide rolls, and draw it out by the first guide bar roll with a surface speed of 1400 m / min and a surface temperature of 90 °C and the second guide bar roll with a surface speed of 4800 m / min and a surface temperature of 150 °C. Then wind it up at a speed of 4800 m / min to obtain an 83 dtex, 36-filament drawn yarn.

[0069] The fiber to which the treatment agent is imparted is evaluated for its spinnability as a manufacturability in the following manner. Specifically, before starting to wind up after manufacturing 550,000 m of the drawn yarn, measure the number of fluff per hour using a fluff counting device (DT-105 manufactured by TORAY ENGINEERING CO., LTD.) and evaluate it using the following criteria. The results are shown in the "Spinnability" column of Table 1.

[0070] ·Evaluation criteria for spinnability ◎ (Good): 0 detected fluff ○ (Qualified): 1 or more and 5 or fewer detected fluff × (Unqualified): 6 or more detected fluff Test category 5 (false twist processability) A sheet of polyethylene terephthalate with an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% by mass was dried by a conventional method, then spun using an extruder at 295 °C, ejected from a metal opening and then cooled and solidified. Then, an emulsion as a diluent of a composition containing a treating agent at a concentration of 10% was attached to the running filament by the guiding oiling method using a metering pump so that the attachment amount of the treating agent became 0.4% by mass. Among them, the composition containing the treating agent is a spinning-false twist processing oil agent shown in Table 2. Then, it was bundled using guide rollers and wound at a speed of 3300 m / minute without passing through mechanical stretching, thereby obtaining a partially oriented yarn of 128 dtex and 36 filaments.

[0071] Then, using the partially oriented yarn obtained above, a false twist processing was carried out using a contact heating type false twister (ATF-21 manufactured by TMT MACHINERY Co., Ltd.) under the conditions of processing speed: 800 m / minute, draw ratio: 1.60, twisting method: 3-axis disk external friction method (1 inlet side guide disk, 1 outlet side guide disk, 5 hard polyurethane disks), twist side heater: length 2.5 m, surface temperature 190 °C, untwist side heater: none, target twist number: 3300 T / m, thereby obtaining a false twist processed yarn.

[0072] For the fiber to which the treating agent was imparted, the false twist processability as its manufacturability was evaluated as follows. Specifically, the number of fluff was measured by a fluff counting device (DT-105 manufactured by TORAY ENGINEERING Co., Ltd.) before winding the false twist processed yarn, the average number of fluff per hour was calculated, and evaluation was carried out using the following criteria. The results are shown in the "false twist processability" column of Table 2.

[0073] ·Evaluation criteria for false twist processability ◎ (Good): Less than 3 detected fluff ○ (Qualified): 3 or more and less than 6 detected fluff × (Unqualified): 6 or more detected fluff Test category 6 (emulsion tank cleaning cycle) The number of days required to clean the emulsion tank until scum is generated when the emulsion tank in the production of the above-mentioned drawn yarn or partially drawn yarn is filled with the emulsion as the diluent is judged based on the following criteria. Thereby, the storage stability of the diluent is evaluated by the emulsion tank cleaning cycle. Among them, the necessity of cleaning is judged by confirming an increase in fluff / broken filaments during the production of synthetic fibers or a decrease in the adhesion amount of the treatment agent to the produced synthetic fibers. The evaluation results are applicable to the "emulsion tank cleaning cycle" columns in Tables 1 and 2.

[0074] · Evaluation criteria for the emulsion tank cleaning cycle ◎ (Good): 14 days or more ○ (Qualified): 7 days or more and 13 days or less × (Unqualified): 6 days or less From the results in Tables 1 and 2, it can be clearly seen that the treatment agents in each example are all qualified or above in terms of the evaluation of oil agent stability, emulsifying property, spinning property or false twist processing property, and emulsion tank cleaning cycle. According to the present invention, the storage stability of the composition containing the treatment agent and the diluent can be improved, and the manufacturability of the fibers imparted with the treatment agent can be improved. In addition, the emulsifying property of the composition containing the treatment agent and further diluted with a solvent can be improved.

Claims

1. A composition containing a synthetic fiber treatment agent for the spinning process, which contains a synthetic fiber treatment agent for the spinning process and a solvent. The above-mentioned synthetic fiber treatment agent for the spinning process includes a nonionic surfactant, an ionic surfactant, and an organic preservative, and optionally includes a smoothing agent. The above-mentioned solvent includes water. It is characterized in that In the above-mentioned synthetic fiber treatment agent for the spinning process, when the total content of the above-mentioned nonionic surfactant, the above-mentioned ionic surfactant, and the above-mentioned smoothing agent is set to 100 parts by mass, the synthetic fiber treatment agent for the spinning process contains 10 parts by mass or more and 99.8 parts by mass or less of the above-mentioned nonionic surfactant, 0.01 parts by mass or more and 20 parts by mass or less of the above-mentioned ionic surfactant, and 80 parts by mass or less of the above-mentioned smoothing agent. When the above-mentioned synthetic fiber treatment agent for the spinning process is set to 100 parts by mass, the composition containing the synthetic fiber treatment agent for the spinning process contains 0.1 parts by mass or more and less than 20 parts by mass of the above-mentioned solvent. In the above-mentioned synthetic fiber treatment agent for the spinning process, the content of bromine element is greater than 0 ppm and 300 ppm or less.

2. The composition containing a synthetic fiber treatment agent for the spinning process according to claim 1, wherein In the above-mentioned synthetic fiber treatment agent for the spinning process, the content of bromine element is 0.1 ppm or more and 180 ppm or less.

3. The composition containing a synthetic fiber treatment agent for the spinning process according to claim 1, wherein The above-mentioned synthetic fiber treatment agent for the spinning process does not contain the above-mentioned smoothing agent, The above-mentioned ionic surfactant includes at least one selected from carboxylates, organic sulfonates, and organic phosphates.

4. The composition containing a synthetic fiber treatment agent for the spinning process according to claim 3, wherein In the above-mentioned synthetic fiber treatment agent for the spinning process, when the total content of the above-mentioned nonionic surfactant and the above-mentioned ionic surfactant is set to 100 parts by mass, the synthetic fiber treatment agent for the spinning process contains 0.001 parts by mass or more and 1 part by mass or less of the above-mentioned organic preservative.

5. The composition containing a synthetic fiber treatment agent for the spinning process according to claim 1, wherein The above-mentioned synthetic fiber treatment agent for the spinning process contains the above-mentioned smoothing agent, The above-mentioned smoothing agent includes an ester compound formed by an aliphatic alcohol and a fatty acid, and The above-mentioned ionic surfactant includes at least one selected from carboxylates, organic sulfonates, and organic phosphates.

6. The composition containing a synthetic fiber treatment agent for the spinning process according to claim 5, wherein In the above-mentioned synthetic fiber treatment agent for the spinning process, when the total content of the above-mentioned nonionic surfactant, the above-mentioned ionic surfactant, and the above-mentioned smoothing agent is set to 100 parts by mass, the synthetic fiber treatment agent for the spinning process contains 0.001 parts by mass or more and 1 part by mass or less of the above-mentioned organic preservative.

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

8. A method for treating synthetic fibers, characterized in that The synthetic fiber treating agent for a spinning process according to any one of claims 1 to 6 is adhered to the synthetic fiber in an amount of 0.1% by mass or more and 5% by mass or less.

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