Treatment agents for synthetic fibers and synthetic fibers

Abstract

The objective of this invention is to suppress fuzzing during the stretching process and to prevent the synthetic fiber treatment agent from detaching from the oiling guide. The synthetic fiber treatment agent contains a smoothing agent (A) comprising a polyol fatty acid ester (A1), a nonionic surfactant (B), an ionic surfactant (C), mineral oil (D), and water (E). The polyol fatty acid ester (A1) is a complete ester compound of a 3-4 bicarbonate polyol with a chain structure having 3-6 carbon atoms and a monobasic fatty acid having 8-24 carbon atoms. The mineral oil (D) is a hydrocarbon having 10-15 carbon atoms. Assuming the total content of the smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), mineral oil (D), and water (E) is 100% by mass, the polyol fatty acid ester (A1) is contained in a proportion of 30-70% by mass, the mineral oil (D) in a proportion of 10-30% by mass, and the water (E) in a proportion of 0.4-2% by mass. The kinematic viscosity of the treatment agent at 30°C is 50-110 mm. 2 / s.

Description

Technical Field

[0001] This invention relates to treatment agents for synthetic fibers and synthetic fibers themselves. Background Technology

[0002] Synthetic fibers are manufactured, for example, by a stretching process in which a raw resin is heated and melted, extruded, and stretched, and a winding process in which the stretched fibers are wound.

[0003] During the stretching process, fuzzing and filament breakage may occur in the fibers. To suppress these phenomena, a synthetic fiber treatment agent is sometimes applied to the melt-extruded fibers. For example, the synthetic fiber treatment agent is applied to the fibers using an oiling guide. In the method of applying the agent using an oiling guide, a portion of the synthetic fiber treatment agent applied to the fibers by the oiling guide fails to adhere to the fibers and detaches from the oiling guide.

[0004] Patent Document 1 discloses a synthetic fiber treatment agent for airbags, which contains at least one polyester selected from esters of aliphatic polyols and fatty acids, and esters of aliphatic monohydric alcohols and aliphatic polycarboxylic acids.

[0005] Patent document 2 discloses a treatment agent for synthetic fibers, which contains a smoothing agent, a polyol fatty acid ester compound having at least one hydroxyl group, and an organic sulfonic acid compound.

[0006] Patent document 3 discloses a treatment agent for synthetic fibers, which contains a sulfur-containing ester compound, and an ester compound in which at least one hydroxyl group of the condensate of a polyoxyalkylene-containing hydroxy fatty acid polyol ester and a dicarboxylic acid or a dicarboxylic acid derivative is capped with a fatty acid.

[0007] Existing technical documents

[0008] Patent documents

[0009] Patent Document 1: International Publication No. 2011 / 162073

[0010] Patent Document 2: International Publication No. 2016 / 125577

[0011] Patent Document 3: International Publication No. 2015 / 186545 Summary of the Invention

[0012] The problem that the invention aims to solve

[0013] Furthermore, it is desirable to further improve the fuzz-suppressing performance of synthetic fiber treatment agents. To improve fuzz-suppressing performance, the tendency of synthetic fiber treatment agents to adhere to the fibers is considered. However, if synthetic fiber treatment agents adhere easily to the fibers, they may easily detach from the oiling guide.

[0014] Methods for solving problems

[0015] The key point of the synthetic fiber treatment agent used to solve the above-mentioned problems is that it contains a smoothing agent (A) including a polyol fatty acid ester (A1), a nonionic surfactant (B), an ionic surfactant (C), mineral oil (D), and water (E).

[0016] The aforementioned polyol fatty acid esters (A1) are complete ester compounds of 3- to 4-membered polyols with a chain structure having 3 to 6 carbon atoms and monobasic fatty acids having 8 to 24 carbon atoms.

[0017] The aforementioned mineral oil (D) is a hydrocarbon with 10 to 15 carbon atoms.

[0018] When the total content of the above-mentioned smoothing agent (A), the above-mentioned nonionic surfactant (B), the above-mentioned ionic surfactant (C), the above-mentioned mineral oil (D), and the above-mentioned water (E) is 100% by mass, the above-mentioned polyol fatty acid ester (A1) is included in a proportion of 30 to 70% by mass, the above-mentioned mineral oil (D) is included in a proportion of 10 to 30% by mass, and the above-mentioned water (E) is included in a proportion of 0.4 to 2% by mass.

[0019] The kinematic viscosity at 30℃ is 50–110 mm. 2 / s.

[0020] In the above-mentioned synthetic fiber treatment agent, the smoothing agent (A) preferably further comprises a polyol fatty acid ester (A2), wherein the polyol fatty acid ester (A2) is a tert-ester compound of a 3-4 polyol having a chain structure with 3-6 carbon atoms and a monobasic fatty acid with 8-24 carbon atoms.

[0021] In the above-mentioned synthetic fiber treatment agent, the ionic surfactant (C) preferably includes at least one selected from organic phosphate salts (C1) and organic sulfonates (C2).

[0022] In the above-mentioned synthetic fiber treatment agent, the above-mentioned ionic surfactant (C) preferably includes an organic phosphate salt (C1) and an organic sulfonate salt (C2).

[0023] In the above-mentioned synthetic fiber treatment agent, the nonionic surfactant (B) is preferably at least one of a diester compound (B1) comprising polyoxyalkylene glycol and monobasic fatty acid and a compound (B2) comprising an epoxy alkane with 2 to 3 carbon atoms added in a total ratio of 1 to 20 moles of primary alkylamines with 8 to 20 carbon atoms.

[0024] In the above-mentioned synthetic fiber treatment agent, the nonionic surfactant (B) is preferably a compound comprising a diester compound (B1) of polyoxyalkylene glycol and monobasic fatty acid and a compound (B2) formed by adding an epoxy alkane with 2 to 3 carbon atoms in a total ratio of 1 to 20 moles of a primary alkylamine with 8 to 20 carbon atoms.

[0025] The key point of the synthetic fiber used to solve the above-mentioned problem is that it is coated with the aforementioned synthetic fiber treatment agent.

[0026] The effects of the invention

[0027] The synthetic fiber treatment agent according to the present invention can appropriately suppress fuzzing and can appropriately suppress the shedding of the treatment agent from the oiling guide. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the attachment process. Detailed Implementation

[0029] (First Embodiment)

[0030] A first embodiment of the synthetic fiber treatment agent (hereinafter also simply referred to as the treatment agent) that specifically implements the present invention will be described.

[0031] The processing agent of this embodiment contains a smoothing agent (A) comprising a polyol fatty acid ester (A1), a nonionic surfactant (B), an ionic surfactant (C), mineral oil (D) as described below, and water (E). The polyol fatty acid ester (A1) is a complete ester compound of a 3- or 4-membered polyol with a chain structure having 3 to 6 carbon atoms and a monobasic fatty acid having 8 to 24 carbon atoms. The mineral oil (D) is a hydrocarbon having 10 to 15 carbon atoms.

[0032] When the total content of smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), mineral oil (D) and water (E) is 100% by mass, the treatment agent contains polyol fatty acid ester (A1) in a proportion of 30-70% by mass, mineral oil (D) in a proportion of 10-30% by mass, and water (E) in a proportion of 0.4-2% by mass.

[0033] In addition, the kinematic viscosity of the above-mentioned treatment agent at 30°C is 50–110 mm. 2 / s.

[0034] By containing the above-mentioned components in the treatment agent at the above-mentioned proportions and maintaining the kinematic viscosity at 30°C within the above-mentioned range, fuzzing during the stretching process can be appropriately suppressed. Furthermore, the shedding of the treatment agent from the oiling guide can be appropriately suppressed.

[0035] The kinematic viscosity of the above-mentioned treatment agent at 30°C is preferably 50–90 mm. 2 / s. In one embodiment, the kinematic viscosity of the treatment agent at 30°C is, for example, 50 mm². 2 / s or more, 53mm 2 / s or higher, 60mm 2 / s or more, 61mm 2 / s or higher, 68mm 2 / s or more, 69mm 2 / s or more, 73mm 2 / s or higher, 75mm 2 / s or more, 76mm 2 / s or more, 86mm 2 / s or more, 88mm 2 / s or above or 89mm 2 / s or higher. Additionally, the kinematic viscosity of the treatment agent at 30°C is, for example, 110 mm³ / s. 2 / s or less, 90mm 2 / s or less, 89mm 2 / s or less, 88mm 2 / s or less, 86mm 2 / s or less, 76mm 2 / s or less, 75mm 2 / s or less, 73mm 2 / s or less, 69mm 2 / s or less, 68mm 2 / s or less, 60mm 2 / s or less, 61mm 2 / s or less or 53mm 2 / s or less.

[0036] It should be noted that the kinematic viscosity of the treatment agent can be measured using a Cannon-Fensk viscometer by a known method.

[0037] In the above-mentioned smoothing agent (A), the polyol fatty acid esters (A1) containing 3 to 6 carbon atoms with a chain structure, including 3 to 4-membered polyols, can be straight-chain aliphatic alcohols or branched aliphatic alcohols. Additionally, they can be saturated aliphatic alcohols or unsaturated aliphatic alcohols.

[0038] Specific examples of the 3- to 4-membered polyols with a chain structure having 3 to 6 carbon atoms include glycerol, pentaerythritol, trimethylolpropane, 2-methyl-2-hydroxymethyl-1,3-propanediol, 1,2,3-butanetriol, 1,2,4-butanetriol, erythritol, 1,2,3-pentanetriol, and 1,2,4-pentanetriol.

[0039] The monobasic fatty acids with 8 to 24 carbon atoms in the aforementioned polyol fatty acid esters (A1) can be either saturated or unsaturated fatty acids. Furthermore, they can be either straight-chain or branched-chain fatty acids.

[0040] Specific examples of monobasic fatty acids with 8 to 24 carbon atoms mentioned above include (1) straight-chain alkyl fatty 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, icosanoic acid, docosanoic acid, and tetradecanoic acid; (2) branched-chain alkyl fatty acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, and isooctadecanoic acid; and (3) straight-chain alkenyl fatty acids such as octadecenoic acid, octadecadienoic acid, and octadectrienoic acid.

[0041] The monobasic fatty acids with 8 to 24 carbon atoms mentioned above can be included in the mixtures or naturally sourced components of the above specific examples.

[0042] Specific examples of naturally derived ingredients include castor oil fatty acids, sesame oil fatty acids, tall oil fatty acids, soybean oil fatty acids, rapeseed oil fatty acids, palm oil fatty acids, coconut oil fatty acids, lard fatty acids, butter fatty acids, and whale oil fatty acids.

[0043] Specific examples of the aforementioned polyol fatty acid esters (A1) include trimethylolpropane and rapeseed oil fatty acid esters, trimethylolpropane and coconut oil fatty acid esters, pentaerythritol and palm oil fatty acid esters, and rapeseed oil, etc.

[0044] The above-mentioned polyol fatty acid esters (A1) can be used alone or in combination of two or more.

[0045] The smoothing agent (A) preferably further comprises a polyol fatty acid ester (A2), which is a ester compound of a 3-4 polyol with a chain structure having 3-6 carbon atoms and a monobasic fatty acid having 8-24 carbon atoms.

[0046] As specific examples of the 3- to 4-membered polyols with a chain structure having 3 to 6 carbon atoms and monobasic fatty acids having 8 to 24 carbon atoms in the above-mentioned polyol fatty acid esters (A2), the same substances as those mentioned as specific examples of the 3- to 4-membered polyols with a chain structure having 3 to 6 carbon atoms and monobasic fatty acids having 8 to 24 carbon atoms in the above-mentioned polyol fatty acid esters (A1) can be given.

[0047] Specific examples of the aforementioned polyol fatty acid esters (A2) include trimethylolpropane dioleate and glyceryl dioleate.

[0048] The above-mentioned polyol fatty acid esters (A2) can be used alone or in combination of two or more.

[0049] The above-mentioned smoothing agent (A) may also contain other smoothing agents (A3) besides polyol fatty acid esters (A1) and polyol fatty acid esters (A2).

[0050] Examples of other smoothing agents (A3) include, for example, sulfur-containing ester compounds, ester compounds of monohydric alcohols and monohydric fatty acids, ester compounds of monohydric alcohols and polyhydric fatty acids, and more specifically, diisostearyl thiodipropionate, diisopalmityl thiodipropionate, isostearyl oleate, dioleoyl adipate, etc.

[0051] Specific examples of the nonionic surfactant (B) contained in the above-mentioned treatment agent include compounds formed by the addition of epoxides to alcohols or fatty acids, ether-ester compounds formed by the addition of epoxides to ester compounds of fatty acids and alcohols, and compounds formed by the addition of epoxides to natural oils and fats.

[0052] Specific examples of alcohols used as raw materials for nonionic surfactants (B) include (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, eicosane, dodecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, and triadecanol; and (2) isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isodecanol, isodecanol, isodecanol, isodecanol, and isodecanol. Branched alkyl alcohols such as decaalkylol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, isohexadecanol, etc.; (3) straight-chain alkenyl alcohols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, and nonadecenol; (4) branched alkenyl alcohols such as isohexadecanol and isohexadecanol; (5) cyclic alkyl alcohols such as cyclopentanol and cyclohexanol; (6) aromatic alcohols such as phenol, benzyl alcohol, monostyrene phenol, stilbene phenol, and tristyrene phenol.

[0053] Specific examples of fatty acids used as raw materials for nonionic surfactants (B) include (1) straight-chain alkyl fatty 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, dodecanoic acid, and docosanoic acid; (2) branched-chain alkyl fatty acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, and isooctadecanoic acid; (3) straight-chain alkenyl fatty acids such as octadecenoic acid, octadecadienoic acid, and octadectrienoic acid; and (4) aromatic fatty acids such as benzoic acid.

[0054] Specific examples of epoxides used as raw materials for nonionic surfactants (B) include ethylene oxide and propylene oxide. The molar number of epoxides added can be suitably set, preferably 0.1 to 60 moles, more preferably 1 to 40 moles, and even more preferably 2 to 30 moles. It should be noted that the molar number of epoxides added represents the number of moles of epoxide relative to 1 mole of alcohol or fatty acid added to the raw material.

[0055] Specific examples of polyols used as raw materials for nonionic surfactants (B) include ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-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, etc.

[0056] Specific examples of natural oils used as raw materials for nonionic surfactants (B) include coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, fish oil, and tallow.

[0057] Other specific examples of nonionic surfactants (B) include (1) alkylamide type nonionic surfactants such as stearic acid diethanolamide, oleic acid diethanolamide, and diethanolamine monolauramide, and (2) polyoxyethylene fatty amide type nonionic surfactants such as polyoxyethylene diethanolamine monooleylamide.

[0058] The nonionic surfactant (B) preferably comprises at least one of a diester compound (B1) selected from polyoxyalkylene glycol and monobasic fatty acid and a compound (B2) formed by adding an epoxy alkane with 2 to 3 carbon atoms to 1 to 20 moles of a primary alkylamine with 8 to 20 carbon atoms in a total ratio. More preferably, it comprises both a diester compound (B1) selected from polyoxyalkylene glycol and monobasic fatty acid and a compound (B2) formed by adding an epoxy alkane with 2 to 3 carbon atoms to 1 to 20 moles of a primary alkylamine with 8 to 20 carbon atoms in a total ratio.

[0059] Specific examples of the aforementioned nonionic surfactant (B1) include diesters of polyethylene glycol (average molecular weight 400) and oleic acid, diesters of polyethylene glycol (average molecular weight 600) and oleic acid, and diesters of polyethylene glycol (average molecular weight 400) and lauric acid.

[0060] Specific examples of the aforementioned nonionic surfactant (B2) include substances formed by adding 3 moles of ethylene oxide (hereinafter also referred to as EO) to 1 mole of laurylamine, substances formed by adding 10 moles of EO to 1 mole of laurylamine, and substances formed by adding 10 moles of EO to 1 mole of stearylamine.

[0061] The aforementioned nonionic surfactant (B) may also contain other nonionic surfactants (B3) besides the aforementioned nonionic surfactant (B1) and nonionic surfactant (B2).

[0062] Specific examples of other nonionic surfactants (B3) include substances formed by adding 10 moles of EO to 1 mole of oleyl alcohol, substances formed by adding 10 moles of EO to 1 mole of isotriadecyl alcohol, substances formed by randomly adding 10 moles of EO and 10 moles of propylene oxide (hereinafter also referred to as PO) to 1 mole of isotriadecyl alcohol, substances formed by adding 10 moles of EO to 1 mole of hydrogenated castor oil, compounds formed by adding 25 moles of EO to 1 mole of castor oil and then esterifying with 3 moles of oleic acid, compounds formed by adding 25 moles of EO to 1 mole of hydrogenated castor oil, crosslinking with adipic acid and esterifying with stearic acid, sorbitan monooleate, sorbitan trioleate, etc.

[0063] The above-mentioned nonionic surfactant (B) can be used alone or in combination of two or more.

[0064] There is no particular limitation on the content of the above-mentioned nonionic surfactant (B). When the total content of the smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), mineral oil (D) and water (E) is 100% by mass, the treatment agent preferably contains 10 to 50% by mass of nonionic surfactant (B).

[0065] Examples of ionic surfactants (C) contained in the above-mentioned treatment agents include anionic surfactants, cationic surfactants, and amphoteric surfactants that are amphoteric compounds.

[0066] Specific examples of anionic surfactants include (1) fatty acid salts such as acetate, octanoate, laurylate, oleate, and stearate; (2) organic phosphates such as octyl phosphate, lauryl phosphate, cetyl phosphate, oleyl phosphate, and stearyl phosphate, which are phosphate salts of aliphatic alcohols; (3) organic phosphates such as polyoxyethylene lauryl ether phosphate, polyoxyethylene oleyl ether phosphate, and polyoxyethylene stearyl ether phosphate, which are phosphate salts of substances formed by the addition of at least one epoxide selected from ethylene oxide and propylene oxide to aliphatic alcohols; (4) organic sulfonates such as lauryl sulfonate, myristyl sulfonate, pentadecyl sulfonate, hexadecyl sulfonate, oleyl sulfonate, stearyl sulfonate, secondary alkyl sulfonate, dioctyl sulfonated succinate, and dodecylbenzene sulfonate; and (5) sulfates of aliphatic alcohols such as lauryl sulfate, oleyl sulfate, and stearyl sulfate. Salts, (6) polyoxyethylene lauryl ether sulfate salts, polyoxyethylene (polyoxyethylene, polyoxypropylene) lauryl ether sulfate salts, polyoxyethylene oil-based ether sulfate salts, etc., sulfate salts of substances formed by the addition of at least one epoxide selected from ethylene oxide and propylene oxide to aliphatic alcohols, (7) castor oil fatty acid sulfate salts, sesame oil fatty acid sulfate salts, tall oil fatty acid sulfate salts, soybean oil fatty acid sulfate salts, rapeseed oil fatty acid sulfate salts, palm oil fatty acid sulfate salts, etc. Sulfates of fatty acids such as lard fatty acid sulfates, tallow fatty acid sulfates, whale oil fatty acid sulfates, etc.; (8) Sulfates of oils such as castor oil sulfates, sesame oil sulfates, tall oil sulfates, soybean oil sulfates, rapeseed oil sulfates, palm oil sulfates, lard sulfates, tallow sulfates, whale oil sulfates, etc.; (9) Sulfates of fatty acids such as caprylic acid, lauric acid, oleic acid, stearic acid, etc.

[0067] Examples of counterions constituting the aforementioned anionic surfactants include alkali metal salts and amine salts. Specific examples of alkali metal salts include sodium salts and potassium salts. Specific examples of amine salts include (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, and dimethyllauramine; (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, butyl diethanolamine, octyl diethanolamine, and lauryl diethanolamine; (4) arylamines such as 3-aminopropene; (5) polyoxyethylene lauryl amino ethers such as polyoxyethylene stearyl amino ether; and (6) ammonia.

[0068] Specific examples of cationic surfactants include quaternary ammonium salts such as lauryltrimethylammonium chloride, hexadecyltrimethylammonium chloride, stearyltrimethylammonium chloride, docosyltrimethylammonium chloride, and dialcyldimethylammonium chloride.

[0069] Specific examples of amphoteric surfactants include betaine-type amphoteric surfactants.

[0070] The aforementioned ionic surfactant (C) preferably comprises at least one selected from organic phosphate salts (C1) and organic sulfonates (C2), and more preferably comprises both organic phosphate salts (C1) and organic sulfonates (C2).

[0071] Specific examples of the aforementioned organophosphate salts (C1) include sodium oleophosphate and dibutyl ethanol isochoryl phosphate.

[0072] Specific examples of the aforementioned organic sulfonates (C2) include sodium salts of secondary alkane sulfonates with 14 to 17 carbon atoms, sodium salts of dioctyl sulfonated succinate, and sodium salts of α-olefin sulfonates.

[0073] The above-mentioned organic phosphate salts (C1) and organic sulfonates (C2) can be used alone or in combination of two or more.

[0074] The aforementioned ionic surfactant (C) may contain other ionic surfactants (C3) besides organic phosphate salts (C1) and organic sulfonates (C2).

[0075] Other examples of ionic surfactants (C3) include potassium oleate.

[0076] The other ionic surfactants (C3) mentioned above can be used alone or in combination of two or more.

[0077] There is no particular limitation on the content of the above-mentioned ionic surfactant (C). When the total content of the smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), mineral oil (D), and water (E) is 100% by mass, the treatment agent preferably contains 0.1 to 10% by mass of ionic surfactant (C).

[0078] Specific examples of mineral oils (D) containing 10 to 15 carbon atoms in the aforementioned treatment agents include aromatic hydrocarbons, alkane hydrocarbons, and cycloalkane hydrocarbons. These mineral oils can have straight-chain, branched, or cyclic structures, and commercially available products can be suitable.

[0079] More specific examples of the mineral oils (D) with 10 to 15 carbon atoms mentioned above include alkanes with 12 to 13 carbon atoms, alkanes with 12 to 14 carbon atoms, cycloalkanes with 11 to 14 carbon atoms, and alkanes with 11 to 14 carbon atoms.

[0080] The aforementioned mineral oils (D) with 10 to 15 carbon atoms can be used alone or in combination of two or more. The mineral oils contained in the treatment agent can be added to the synthetic fiber treatment agent during manufacturing or just before spinning, and may also contain substances contained as impurities in alkane derivatives such as alkyl sulfonic acids.

[0081] Water (E) that can be contained in the aforementioned treatment agent includes, for example, ion-exchanged water, distilled water, hard water, and soft water. The water in the treatment agent can be added during manufacturing or just before spinning, and the moisture content can be adjusted using commonly known dehydration methods such as reduced pressure or heating. The water added as moisture to the synthetic fiber treatment agent can be water purified using ion exchange resins, membranes, distillation, etc., or water that is carried into the raw materials of the treatment agent composition as other components. The water content in the synthetic fiber treatment agent can be calculated based on the amount of water added and the water content in the raw materials constituting the synthetic fiber treatment agent. If the water content in the raw materials is unknown, it can be determined using known analytical methods such as Karl Fischer titration or gas chromatography.

[0082] (Second Implementation)

[0083] A second embodiment of the synthetic fiber that specifically implements the present invention will be described. The synthetic fiber in this embodiment is a synthetic fiber coated with the treatment agent of the first embodiment.

[0084] As a method for attaching the treatment agent of the first embodiment to the synthetic fiber, methods such as guide oiling or roller oiling can be used, with guide oiling being particularly preferred. Alternatively, hot-molten resin can be spun from the die, and multiple guides can be used to oil (i.e., supply the treatment agent) the filaments are assembled into a single strand. As for the form of the treatment agent when it is attached to the synthetic fiber, it can be applied in the form of an organic solvent solution, an aqueous liquid, or an undiluted state, with direct application of the treatment agent to the synthetic fiber in an undiluted state being particularly preferred (direct oiling). There are no particular restrictions on the timing of the treatment agent attachment, as long as it is applied during the spinning process. In the stretching process, manufacturing equipment that allows rollers at temperatures of 150°C or higher to pass through can further enhance the effects of the invention when used in such a process.

[0085] There is no particular limitation on the proportion of the treatment agent adhering to the synthetic fiber, but it is preferable to adhere it at a proportion of 0.1 to 3% by mass relative to the synthetic fiber, based on non-volatile components. Non-volatile components refer to substances that do not volatilize and remain even after the synthetic fiber is heated with the treatment agent at 105°C for 2 hours.

[0086] There are no particular limitations on the synthetic fibers used; examples include polyester fibers, polyolefin fibers, polyamide fibers, polyacrylonitrile fibers, cellulose fibers, and lignin fibers. Polyamide fibers and polyester fibers are particularly preferred. These fibers can also be composite synthetic fibers composed of two or more types.

[0087] Specific examples of polyamide fibers include nylon 6, nylon 66, and aromatic polyamide (aramid) fibers. Among these, nylon 6 and nylon 66 fibers are preferred.

[0088] Specific examples of polyester fibers include polyethylene terephthalate (PET), polyethylene terephthalate (PPT), polyethylene terephthalate (PET), polyethylene naphthalate (PET), polylactic acid (PLA), and composite polyester fibers containing these polyester resins. Polyester fibers can be modified polyester fibers such as alkaline or acidic dyeable polyester fibers, antistatic polyester fibers, and flame-retardant polyester fibers. Fibers made from polyethylene terephthalate are preferred.

[0089] Specific examples of polyolefin-based fibers include polyethylene fibers, polypropylene fibers, and polybutene fibers. Polypropylene fibers can be modified polypropylene fibers copolymerized from various monomers, or composite polypropylene fibers of polyethylene and polypropylene. The fineness of the manufactured synthetic fiber is not particularly limited, but is preferably 150 dtex or more, more preferably 500 dtex or more, and particularly preferably 1000 dtex or more. Furthermore, the strength of the manufactured synthetic fiber is not particularly limited, but is preferably 5.0 cN / dtex or more, more preferably 6.0 cN / dtex or more, and particularly preferably 7.0 cN / dtex or more.

[0090] The following effects can be obtained by using the treatment agent of the first embodiment and the synthetic fiber of the second embodiment.

[0091] (1) The treatment agent contains a smoothing agent (A) comprising a polyol fatty acid ester (A1), a nonionic surfactant (B), an ionic surfactant (C), mineral oil (D), and water (E). The polyol fatty acid ester (A1) is a complete ester compound of a 3-4 bicarbonate polyol with a chain structure having 3-6 carbon atoms and a monocarbonate fatty acid having 8-24 carbon atoms. The mineral oil (D) is a hydrocarbon having 10-15 carbon atoms. Assuming the total content of the smoothing agent (A), nonionic surfactant (B), ionic surfactant (C), mineral oil (D), and water (E) is 100% by mass, the treatment agent contains 30-70% by mass of the polyol fatty acid ester (A1), 10-30% by mass of the mineral oil (D), and 0.4-2% by mass of the water (E). Furthermore, the kinematic viscosity of the treatment agent at 30°C is 50-110 mm. 2 / s.

[0092] By containing the above-mentioned components in the treatment agent at the above-mentioned proportions and maintaining the kinematic viscosity at 30°C within the above-mentioned range, fuzzing during the stretching process can be appropriately suppressed. Furthermore, the shedding of the treatment agent from the oiling guide can be appropriately reduced.

[0093] (2) By including an organic phosphate salt (C1) and an organic sulfonate salt (C2) in the ionic surfactant (C), fuzzing during the stretching process can be suppressed more effectively.

[0094] (3) By adding a nonionic surfactant (B) to a diester compound (B1) of polyoxyalkylene glycol and monobasic fatty acid and a compound (B2) of 2 to 3 carbon atoms in a total ratio of 1 to 20 moles of primary alkylamines with 8 to 20 carbon atoms, fuzzing during the stretching process can be suppressed more appropriately.

[0095] The above-described embodiments can be implemented with the following modifications. The above-described embodiments and the following modifications can be combined with each other within a technically compatible scope.

[0096] In the treatment agent of this embodiment, stabilizers, charge control agents, antistatic agents, thickeners, antioxidants, ultraviolet absorbers, and other components commonly used in treatment agents or aqueous solutions (also referred to as other components) may be further mixed in to maintain the quality of the treatment agent, without affecting the effect of the present invention.

[0097] Example

[0098] To illustrate the structure and effects of the present invention more specifically, embodiments are given below, but the present invention is not limited to these embodiments. It should be noted that in the following embodiments and comparative examples, parts refer to parts by mass, and % refers to percentages by mass.

[0099] Experimental Group 1 (Preparation of Treatment Agents for Synthetic Fibers)

[0100] (Example 1)

[0101] Using the components shown in Table 1, the following amounts were added to a beaker: smoothing agents (A1-1), (A2-1), and (A3-1) at 44.6 wt%, 4.4 wt%, and 4.4 wt%, respectively; nonionic surfactants (B1-1), (B2-1), (B3-1), (B3-3), and (B3-7) at 4.4 wt%, 0.9 wt%, 7.2 wt%, 4.4 wt%, and 4.4 wt%, respectively; ionic surfactants (C1-1), (C2-1), and (C2-2) at 1.8 wt%, 1.8 wt%, and 1.8 wt%, respectively; mineral oil (D-1) at 18.1 wt%; and water (E) at 1.8 wt%. The mixture was stirred until fully combined to prepare a treatment agent for synthetic fibers.

[0102] (Examples 2-12 and Comparative Examples 1-5)

[0103] Regarding the synthetic fiber treatment agents of Examples 2-12 and Comparative Examples 1-5, they were prepared using the components shown in Table 1 and by the same method as in Example 1. However, in Examples 3, 4, 5, and 9, in addition to the raw materials in Table 1, 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane as an antioxidant was added at a ratio of 0.8 parts to 100 parts of the treatment agent excluding water and mineral oil.

[0104] The types, proportions, and total proportions of smoothing agents (A), nonionic surfactants (B), ionic surfactants (C), mineral oils (D), and water (E) used in synthetic fiber treatment agents are shown in the columns “Smoothing Agent (A)”, “Nonionic Surfactant (B)”, “Ionic Surfactant (C)”, “Mineral Oil (D)”, and “Water (E)” of Table 1, respectively.

[0105] [Table 1]

[0106]

[0107] The detailed information of each component listed in the category column of Table 1, namely A1-1~A1-4, A2-1, A2-2, A3-1, A3-2, rA-1, rA-2, B1-1~B1-3, B2-1~B2-3, B3-1~B3-8, rB-1, C1-1, C1-2, C2-1, C2-2, C2-3, C3-1, D-1~D-4, and E-1, is as follows.

[0108] (Smoothing Agent (A))

[0109] A1-1: Triester of trimethylolpropane and rapeseed oil fatty acids

[0110] A1-2: Triester of trimethylolpropane and coconut oil fatty acids

[0111] A1-3: Tetraester of pentaerythritol and palm oil fatty acids

[0112] A1-4: Rapeseed oil

[0113] A2-1: Trimethylolpropane dioleate

[0114] A2-2: Diglyceride

[0115] A3-1: Diisostearylthiodipropionate

[0116] A3-2: Diisopalmitoylthiodipropionate

[0117] rA-1: Isostearyl oleate

[0118] rA-2: Dioleoyl adipate

[0119] (Nonionic surfactant (B))

[0120] B1-1: Diester of polyethylene glycol (average molecular weight 400) and oleic acid

[0121] B1-2: Diester of polyethylene glycol (average molecular weight 600) and oleic acid

[0122] B1-3: Diester of polyethylene glycol (average molecular weight 400) and lauric acid

[0123] B2-1: A substance formed by adding 3 moles of EO to 1 mole of laurylamine.

[0124] B2-2: A substance formed by adding 10 moles of EO to 1 mole of laurylamine.

[0125] B2-3: A substance formed by adding 10 moles of EO to 1 mole of stearamine.

[0126] B3-1: A substance formed by adding 10 moles of EO to 1 mole of oleyl alcohol.

[0127] B3-2: A substance formed by adding 10 moles of EO to 1 mole of isotridecyl alcohol.

[0128] B3-3: A substance formed by the random addition of 1 mole of isotracene alcohol to 10 moles of EO and 10 moles of PO.

[0129] B3-4: A substance formed by adding 10 moles of EO to 1 mole of hydrogenated castor oil.

[0130] B3-5: A compound formed by adding 25 moles of EO to 1 mole of castor oil and then esterifying it with 3 moles of oleic acid.

[0131] B3-6: A compound (average molecular weight 5000) formed by adding 25 moles of EO to 1 mole of hydrogenated castor oil, crosslinking with adipic acid, and then esterifying with stearic acid at the terminal end.

[0132] B3-7: Sorbitan monooleate

[0133] B3-8: Sorbitan trioleate

[0134] rB-1: A monoester of polyethylene glycol (average molecular weight 600) and oleic acid.

[0135] It should be noted that the "average molecular weight" mentioned above refers to the mass average molecular weight. The mass average molecular weight can be determined using the well-known gel permeation chromatography method (also known as GPC).

[0136] (Ionic surfactant (C))

[0137] C1-1: Sodium salt of oleophosphate

[0138] C1-2: Dibutyl ethanol salt of isohexadecanyl phosphate

[0139] C2-1: Sodium salt of secondary alkane sulfonate with 14-17 carbon atoms

[0140] C2-2: Sodium dioctylsulfonate

[0141] C2-3: Sodium α-olefin sulfonate

[0142] C3-1: Potassium oleate

[0143] (Mineral oil (D))

[0144] D-1: Alkane hydrocarbons with 12-13 carbon atoms

[0145] D-2: Alkane hydrocarbons with 12 to 14 carbon atoms

[0146] D-3: Cycloalkanes with 11-14 carbon atoms

[0147] D-4: Alkane hydrocarbons with 11 to 14 carbon atoms

[0148] (Water (E))

[0149] E-1: Ion-exchanged water

[0150] Experimental Group 2 (Manufacturing of Synthetic Fibers)

[0151] First, prepare 1670 dtex, 288-filament yarn made of polyethylene terephthalate (unoiled yarn). Figure 1 The symbol F is used to represent this filament. For example... Figure 1 As shown, the treatment agent 14 prepared in test group 1 was applied to silk F at room temperature using a metering pump-guided oiling method. Specifically, the coating device for the treatment agent 14 used an oiling guide 10.

[0152] The ceramic oil guide 10 has a long, strip-shaped main body 11 with a length L of approximately 100 mm, and a pair of sidewall portions 12 erected at a height H of approximately 10 mm from the upper surface of the main body 11 and extending along the length of the main body 11 for the same length L. The upper surface 11a of the main body 11 is a flat surface extending in a horizontal direction. The pair of sidewall portions 12 extend parallel to each other along the length of the main body 11, spaced apart by a gap W of approximately 3 mm.

[0153] The main body 11 has a discharge port 13 for discharging the treatment agent 14 at its central part along the length direction. A certain amount of treatment agent is discharged from the discharge port 13 using a metering pump (not shown), thereby covering the upper surface 11a of the main body 11 with the treatment agent 14.

[0154] The un-oiled wire F is brought into contact with the upper surface 11a (oiling surface) of the main body 11 of the oiling guide 10 and moved horizontally between a pair of sidewall portions 12, thereby adhering the treatment agent 14 to the wire F. The wire's moving speed is 100 m / min, and the amount of treatment agent 14 adhering is set to 3.0% by mass based on non-volatile components. The wire tension before and after the oiling guide is approximately 300 g.

[0155] The shape of the oil guide 10 is not limited to Figure 1 The shape can be configured, for example, as follows: the melt-spun fibers move vertically, the oiling guide has an oiling surface extending vertically, and the treatment agent adheres to the fibers from the horizontal direction. Furthermore, the number of discharge holes 13 for discharging the treatment agent 14 is not limited to one, but can be two or more.

[0156] Experimental Group 3 (Evaluation)

[0157] For the treatment agents of Examples 1-12 and Comparative Examples 1-5, the presence or absence of shedding from the oiling guide and the presence or absence of fuzzing of synthetic fibers were evaluated using the procedures described below. The results of this evaluation are shown in the "Shedding" and "Fuzzing" columns of Table 1. In addition, the kinematic viscosity of each treatment agent at 30°C was measured using a Cannon-Fensk viscometer, and the results are shown in the "Kinematic Viscosity" column of Table 1.

[0158] (Shedding)

[0159] Prepare untreated polyethylene terephthalate fibers with 1670 dtex, 288 filaments, and an intrinsic viscosity of 0.93. While moving the fibers at a speed of 100 m / min, use... Figure 1 The oiling guide 10 shown applies the treatment agent 14 prepared in test group 1 to the fibers. The amount of treatment agent 14 applied is set to 3.0% by mass based on non-volatile components. Within 10 minutes of starting oiling, the detachment of treatment agent 14 from the end 11b in the length direction of the main body 11 of the oiling guide 10 is visually observed and evaluated according to the following criteria.

[0160] • Evaluation criteria for detachment

[0161] 〇 (Good): No instances of synthetic fiber treatment agent detaching from the guide body were observed.

[0162] × (Defect): The synthetic fiber treatment agent was observed to detach from the guide body.

[0163] (fluff)

[0164] In the above evaluation of fiber shedding, for fibers that were treated with a treatment agent at a rate of 3.0% by mass (based on non-volatile components) and moved at a speed of 100 m / min, a satin chrome bar with a surface temperature of 250°C was brought into contact with the fibers under an initial tension of 2 kg. The number of fibers shed per 10 minutes after friction with the satin chrome bar was measured using a fiber shedding counting device (manufactured by Toray Engineering Co., Ltd.), and the evaluation was performed according to the following criteria.

[0165] • Evaluation criteria for fuzzing

[0166] ◎◎(Exceptionally Excellent): The measured number of raised fibers is less than 2.

[0167] ◎〇 (Excellent): The measured number of fuzz particles is 2 or more but less than 4.

[0168] 〇〇 (Good): The measured number of fuzz particles is 4 or more but less than 6.

[0169] 〇 (Pass): The measured number of fuzz particles is 6 or more but less than 8.

[0170] × (Defective): The measured number of fuzz particles is 8 or more.

[0171] As shown in Table 1, according to the present invention, fuzzing can be appropriately suppressed. Furthermore, the shedding of the synthetic fiber treatment agent from the oiling guide can be appropriately suppressed.

[0172] The present invention also includes the following methods.

[0173] (Postscript 1)

[0174] A treatment agent for synthetic fibers, characterized in that,

[0175] The treatment agent contains a smoothing agent (A) comprising polyol fatty acid esters (A1) and polyol fatty acid esters (A2), a nonionic surfactant (B), an ionic surfactant (C), mineral oil (D), and water (E).

[0176] The aforementioned polyol fatty acid esters (A1) are complete ester compounds of 3- to 4-membered polyols with a chain structure having 3 to 6 carbon atoms and monobasic fatty acids having 8 to 24 carbon atoms.

[0177] The aforementioned polyol fatty acid esters (A2) are ester compounds consisting of 3- to 4-membered polyols with a chain structure having 3 to 6 carbon atoms and monobasic fatty acids having 8 to 24 carbon atoms.

[0178] The aforementioned mineral oil (D) is a hydrocarbon with 10 to 15 carbon atoms.

[0179] When the total content of the above-mentioned smoothing agent (A), the above-mentioned nonionic surfactant (B), the above-mentioned ionic surfactant (C), the above-mentioned mineral oil (D), and the above-mentioned water (E) is 100% by mass, the above-mentioned polyol fatty acid ester (A1) is included in a proportion of 30 to 70% by mass, the above-mentioned mineral oil (D) is included in a proportion of 10 to 30% by mass, and the above-mentioned water (E) is included in a proportion of 0.4 to 2% by mass.

[0180] The kinematic viscosity of this treatment agent at 30°C is 53–110 mm⁻¹. 2 / s.

[0181] (Postscript 2)

[0182] As described in Appendix 1, the synthetic fiber treatment agent comprises at least one selected from organic phosphate salts (C1) and organic sulfonates (C2).

[0183] (Note 3)

[0184] The synthetic fiber treatment agent as described in Appendix 1 or 2, wherein the ionic surfactant (C) comprises an organic phosphate salt (C1) and an organic sulfonate salt (C2).

[0185] (Note 4)

[0186] The synthetic fiber treatment agent as described in any one of Appendices 1 to 3, wherein the nonionic surfactant (B) comprises at least one of a diester compound (B1) selected from polyoxyalkylene glycol and monobasic fatty acid and a compound (B2) formed by adding a primary alkylamine having 8 to 20 carbon atoms in a total ratio of 1 to 20 moles to an epoxide having 2 to 3 carbon atoms.

[0187] (Note 5)

[0188] The synthetic fiber treatment agent as described in any one of Appendices 1 to 4, wherein the nonionic surfactant (B) comprises a diester compound (B1) of a polyoxyalkylene glycol and a monobasic fatty acid and a compound (B2) formed by adding an epoxy alkane with 2 to 3 carbon atoms in a total ratio of 1 to 20 moles of a primary alkylamine having 8 to 20 carbon atoms.

[0189] (Note 6)

[0190] A synthetic fiber, characterized in that it is coated with any one of the synthetic fiber treatment agents described in Appendix 1 to 5.

Claims

1. A treatment agent for synthetic fibers, characterized by comprising a smoothing agent A containing a polyol fatty acid ester Al, a nonionic surfactant B, an ionic surfactant C, a mineral oil D, and water E, the polyol fatty acid ester Al is a complete ester compound of a 3- to 4- membered polyol having a chain structure with 3 to 6 carbon atoms and a monofatty acid with 8 to 24 carbon atoms, the mineral oil D is a hydrocarbon with 10 to 15 carbon atoms, when the total content ratio of the smoothing agent A, the nonionic surfactant B, the ionic surfactant C, the mineral oil D, and the water E is 100 mass%, the polyol fatty acid ester Al is contained at a ratio of 30 mass% to 70 mass%, the mineral oil D is contained at a ratio of 10 mass% to 30 mass%, and the water E is contained at a ratio of 0.4 mass% to 2 mass%, the smoothing agent A further contains a polyol fatty acid ester A2 which is a partial ester compound of a 3- to 4- membered polyol having a chain structure with 3 to 6 carbon atoms and a monofatty acid with 8 to 24 carbon atoms. The processing agent has a kinematic viscosity at 30°C of 50 mm 2 / s ~ 110 mm 2 / s.

2. The synthetic fiber treatment agent according to claim 1, wherein the ionic surfactant C contains at least one selected from an organic phosphate ester salt Cl and an organic sulfonic acid salt C2.

3. The synthetic fiber treatment agent according to claim 1 or 2, wherein the ionic surfactant C contains an organic phosphate ester salt Cl and an organic sulfonic acid salt C2.

4. The synthetic fiber treatment agent according to claim 3, wherein the nonionic surfactant B contains at least one selected from a diester compound Bl of a polyoxyalkylene glycol and a monofatty acid and a compound B2 which is obtained by adding 1 to 20 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of a primary alkyl amine with 8 to 20 carbon atoms.

5. The synthetic fiber treatment agent according to claim 1 or 2, wherein the nonionic surfactant B contains a diester compound Bl of a polyoxyalkylene glycol and a monofatty acid and a compound B2 which is obtained by adding 1 to 20 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of a primary alkyl amine with 8 to 20 carbon atoms.

6. The synthetic fiber treatment agent according to claim 5, wherein an article to which the treatment agent for synthetic fibers described in any one of claims 1 to 6 is attached.

7. A synthetic fiber, characterized by, ​

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