Diluted solution of treating agent for synthetic fiber and use thereof

Abstract

The present invention provides a diluent for synthetic fiber treatment agent capable of reducing fluff. The diluent must contain a smoothing agent (L), a nonionic surfactant (N), and a straight-chain hydrocarbon (P) having 11 to 14 carbon atoms, and at least one selected from an oil film enhancer (H), an organic sulfonate (AS), an organic phosphate (AP), an oxirane adduct of an organic amine (RA), a low viscosity diluent (D), and an antioxidant (E), the straight-chain hydrocarbon (P) must contain a straight-chain hydrocarbon having 13 carbon atoms and a straight-chain hydrocarbon having 14 carbon atoms, the straight-chain hydrocarbon (P) optionally contains a straight-chain hydrocarbon having 11 carbon atoms and / or a straight-chain hydrocarbon having 12 carbon atoms, the straight-chain hydrocarbon (P) satisfies the following formula (1), and the straight-chain hydrocarbon (P) has a weight ratio of 8 to 50% in the diluent for synthetic fiber treatment agent. 1 < weight % of straight-chain hydrocarbon having 13 carbon atoms / weight % of straight-chain hydrocarbon having 14 carbon atoms < 10 (1).

Description

Technical Field

[0001] This invention relates to a dilution of a treatment agent for synthetic fibers and its use. Background Technology

[0002] In the manufacturing process of industrial synthetic fibers, synthetic fiber treatment agents are applied to prevent yarn fuzz and breakage, imparting smoothness and bundle properties to the yarn. Among the methods for applying synthetic fiber treatment agents, there are instances of dilution with water and dilution with low-viscosity paraffin wax, etc. In recent years, the increase in yarn production speed to improve productivity and the increase in draw ratio to increase yarn strength have led to an increase in fuzz.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 6533002 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] When synthetic fiber treatment agents are diluted with low-viscosity paraffin and then coated, the volatility of the low-viscosity paraffin on the heated rollers used to stretch the yarn varies depending on the number of carbon atoms in the paraffin. The volatility of the low-viscosity paraffin affects the smoothness and bundle properties of the yarn during stretching. It was found that using low-viscosity paraffin with an optimal number of carbon atoms can reduce fuzz.

[0008] The object of the present invention is to provide a diluted solution of a treatment agent for synthetic fibers that can reduce fuzz.

[0009] Technical means for solving problems

[0010] In order to solve the above-mentioned problems, the inventors conducted research and found that a dilution of a synthetic fiber treatment agent containing a smoothing agent, a nonionic surfactant, and a straight-chain hydrocarbon containing a specific number of carbon atoms in a specific ratio is correct and suitable.

[0011] That is, the diluent of the synthetic fiber treatment agent of the present invention must contain a smoothing agent (L), a nonionic surfactant (N), and a straight-chain hydrocarbon (P) having 11 to 14 carbon atoms, and must contain at least one selected from an oil film enhancer (H), an organic sulfonate (AS), an organic phosphate (AP), an ethylene oxide adduct of an organic amine (RA), a low-viscosity diluent (D), and an antioxidant (E). The straight-chain hydrocarbon (P) must contain a straight-chain hydrocarbon having 13 carbon atoms and a straight-chain hydrocarbon having 14 carbon atoms. The straight-chain hydrocarbon (P) may optionally contain a straight-chain hydrocarbon having 11 carbon atoms and / or a straight-chain hydrocarbon having 12 carbon atoms. The straight-chain hydrocarbon (P) satisfies the following formula (1).

[0012] The linear hydrocarbon (P) accounts for 8% to 50% by weight in the diluted solution of the synthetic fiber treatment agent.

[0013] 1 < weight % of straight-chain hydrocarbons with 13 carbon atoms / weight % of straight-chain hydrocarbons with 14 carbon atoms < 10 (1)

[0014] Preferably, the straight-chain hydrocarbon (P) further comprises a straight-chain hydrocarbon with 11 carbon atoms and / or a straight-chain hydrocarbon with 12 carbon atoms.

[0015] Preferably, the cleanliness of the diluted treatment agent, i.e., the ISO grade (4406:1999), is 17 / 16 / 14 or less, or the number of contaminant particles larger than 4 μm in each 100 ml of the diluted treatment agent is 130,000 or less.

[0016] Preferably, the kinematic viscosity of the diluted synthetic fiber treatment agent at 30°C is 10 mm. 2 / s~100mm 2 / s.

[0017] Preferably, the high-temperature cloud point of the diluted solution of the synthetic fiber treatment agent of the present invention is above 50°C, and the low-temperature cloud point is below 10°C.

[0018] The synthetic fiber filament yarn of the present invention is made by coating raw synthetic fiber filament yarn with a diluted solution of the above-mentioned synthetic fiber treatment agent.

[0019] The method for manufacturing synthetic fiber filament yarn of the present invention includes a step of coating raw synthetic fiber filament yarn with a diluted solution of the above-mentioned synthetic fiber treatment agent.

[0020] Invention Effects

[0021] The diluted solution of the synthetic fiber treatment agent of the present invention can reduce fuzz during the manufacture of synthetic fibers. Detailed Implementation

[0022] The components of the diluent for the synthetic fiber treatment agent of the present invention will be described.

[0023] [Straight-chain hydrocarbons (P)]

[0024] The straight-chain hydrocarbon (P) used in this invention is a straight-chain hydrocarbon with 11 to 14 carbon atoms.

[0025] The straight-chain hydrocarbon (P) must contain a straight-chain hydrocarbon with 13 carbon atoms and a straight-chain hydrocarbon with 14 carbon atoms, and the aforementioned straight-chain hydrocarbon (P) may arbitrarily have a straight-chain hydrocarbon with 11 carbon atoms and / or a straight-chain hydrocarbon with 12 carbon atoms.

[0026] A straight-chain hydrocarbon with 13 carbon atoms is n-tetrazane, and a straight-chain hydrocarbon with 14 carbon atoms is n-tetradecane.

[0027] Examples of straight-chain hydrocarbons (P) other than those with 11 carbon atoms and those with 12 carbon atoms include n-undecane (11 carbon atoms) and n-dodecane (12 carbon atoms).

[0028] For the dilution of the synthetic fiber treatment agent of the present invention, if the above-mentioned straight-chain hydrocarbon (P) also contains a straight-chain hydrocarbon with 11 carbon atoms and / or a straight-chain hydrocarbon with 12 carbon atoms, it can reduce fuzz, and therefore is preferred from this point of view.

[0029] In the dilution of the synthetic fiber treatment agent of the present invention, the above-mentioned straight-chain hydrocarbon (P) includes straight-chain hydrocarbons with 13 carbon atoms and straight-chain hydrocarbons with 14 carbon atoms, and satisfies the following formula (1).

[0030] 1 < weight % of straight-chain hydrocarbons with 13 carbon atoms / weight % of straight-chain hydrocarbons with 14 carbon atoms < 10 (1)

[0031] From the viewpoint of reducing fuzz, the lower limit of the ratio of the weight percentage of straight-chain hydrocarbons with 13 carbon atoms to the weight percentage of straight-chain hydrocarbons with 14 carbon atoms (weight percentage of straight-chain hydrocarbons with 13 carbon atoms / weight percentage of straight-chain hydrocarbons with 14 carbon atoms) is greater than 1, preferably 1.5 or more, and more preferably 2 or more.

[0032] From the viewpoint of reducing fuzz, the upper limit of the ratio of the weight percentage of straight-chain hydrocarbons with 13 carbon atoms to the weight percentage of straight-chain hydrocarbons with 14 carbon atoms (weight percentage of straight-chain hydrocarbons with 13 carbon atoms / weight percentage of straight-chain hydrocarbons with 14 carbon atoms) is less than 10, preferably 8 or less, and more preferably 6 or less.

[0033] The weight percentage of straight-chain hydrocarbons (P) was determined based on the area integral measured using GC-FID. Specifically, a methylsilane capillary column (DB-1HT, 0.32 mm φ, 30 m) was used, helium was used as the carrier gas, and a hydrogen ion detector (FID) was used. The determination was performed using a GC-2010Plus (manufactured by Shimadzu Corporation) under the following conditions: carrier gas flow rate 1.84 mL / min, fractionation ratio 1:25, sample injection temperature 300 °C, column heating conditions 120 °C (1 min) → (15 °C / min) → 240 °C, and detector temperature 300 °C.

[0034] A standard solution was prepared by mixing 25 wt% n-undecane (trade name: Cactus Normal Paraffin N-11ENEOS), 25 wt% n-dodecane (trade name: Cactus Normal Paraffin N-12DENEOS), 25 wt% n-tridecane (trade name: Cactus Normal Paraffin N-13ENEOS), and 25 wt% n-tetradecane (trade name: Cactus Normal Paraffin N-14ENEOS). GC analysis was performed under the above conditions to determine the area integral of the straight-chain hydrocarbons with each number of carbon atoms. A diluted solution of the synthetic fiber treatment agent was also subjected to GC analysis under the same conditions to determine the area integral of each number of carbon atoms detected at the same holding time as the standard solution. Since the standard solution contains 25 wt% of each hydrocarbon, the weight percentage is calculated according to the following formula (2) since weight is proportional to area. The total of the hydrocarbons is the weight of the straight-chain hydrocarbon (P).

[0035] = 25 × the area integral of one hydrocarbon in the diluted solution of the synthetic fiber treatment agent / the area integral of one hydrocarbon in the standard solution = % by weight of one hydrocarbon (2)

[0036] [Smoothing agent (L)]

[0037] [Smoothing Agent (L)]

[0038] The smoothing component (L) is an essential component in the diluent of the synthetic fiber treatment agent of the present invention, and is a component other than the nonionic surfactant (N). Examples of commonly known smoothing components used in synthetic fiber treatment agents include: 1) ester compounds (L1) having a structure formed by an ester bond between an aliphatic monohydric alcohol and a fatty acid; 2) ester compounds (L2) having a structure formed by an ester bond between an aliphatic polyhydric alcohol and a fatty acid; 3) ester compounds (L3) having a structure formed by an ester bond between an aliphatic monohydric alcohol and an aliphatic polycarboxylic acid; 4) aromatic ester compounds (L4) having an aromatic ring within the molecule; 5) sulfur-containing ester compounds (L5); 6) mineral oil (L6), etc. One or more smoothing components (L) may be used.

[0039] 1) Ester compounds (L1)

[0040] Ester compounds (L1) are compounds with a structure consisting of an aliphatic monohydric alcohol and a fatty acid (aliphatic monocarboxylic acid) bonded together by an ester bond, and which do not contain polyoxyalkylene groups within the molecule. One or more ester compounds (L1) may be used.

[0041] As an ester compound (L1), it is preferred to be a compound represented by the following general formula (3).

[0042] R 1 -COO-R 2 (3)

[0043] (where R is in the formula) 1 R represents an alkyl or alkenyl group with 4 to 24 carbon atoms. 2 (This refers to alkyl or alkenyl groups with 6 to 24 carbon atoms.)

[0044] R 1 The number of carbon atoms is preferably 6 to 22, more preferably 8 to 20, and even more preferably 10 to 18. When the number of carbon atoms is less than 4, the oil film is weak, and therefore sometimes the fuzz increases. On the other hand, when the number of carbon atoms exceeds 24, the friction between the fiber metals becomes higher, and sometimes the fuzz increases. 1 It can be either alkyl or alkenyl, but from the viewpoint of not causing blockage of the oil supply line during long-term storage, alkyl is preferred.

[0045] R 2 The number of carbon atoms is preferably 6 to 22, more preferably 8 to 20, and even more preferably 10 to 18. When the number of carbon atoms is less than 6, the oil film is weak, and therefore sometimes the fuzz increases. On the other hand, when the number of carbon atoms exceeds 24, the friction between the fiber metals becomes higher, and sometimes the fuzz increases. 2 It can be either alkyl or alkenyl, but from the viewpoint of not causing blockage of the oil supply line during long-term storage, alkenyl is preferred.

[0046] As an ester compound (L1), there is no particular limitation, and examples include: 2-decyltetradecanoyl erucic acid ester, 2-decyltetradecanoyl oleate, 2-octyl dodecyl stearate, isooctyl palmitate, isooctyl stearate, butyl palmitate, butyl stearate, butyl oleate, isooctyl oleate, laurate oleate, isothryl tridecyl stearate, hexadecyl stearate, isostearyl oleate, oleyl octanoate, oleyl laurate, oleyl palmitate, oleyl stearate, oleyl oleate, etc. Among these, 2-decyltetradecanoyl oleate, 2-octyl dodecyl stearate, isooctyl palmitate, isooctyl stearate, lauryl oleate, isothryl tridecyl stearate, hexadecyl stearate, isostearyl oleate, and oleyl oleate are preferred.

[0047] 2) Ester compounds (L2)

[0048] Ester compounds (L2) are compounds with a structure consisting of an aliphatic polyol and a fatty acid (aliphatic monocarboxylic acid) bonded together by an ester bond, and which do not contain polyoxyalkylene groups within the molecule. One or more ester compounds (L2) may be used.

[0049] There are no particular limitations on the aliphatic polyol constituting the ester compound (L2), as long as it is divalent or higher; one or more types can be used. From the viewpoint of oil film strength, the polyol is preferably trivalent or higher, more preferably tri- to quadrivalent, and even more preferably trivalent.

[0050] Examples of aliphatic polyols include: ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,3-propanediol, 1,5-pentanediol, 1,6-hexanediol, neopentanediol, cyclohexanediol, cyclohexanediol, glycerol, trimethylolpropane, pentaerythritol, erythritol, diglycerol, sorbitan, sorbitol, bis(trimethylolpropane), dipentaerythritol, triglycerides, tetraglycerides, sucrose, etc. The preferred ingredients are glycerol, trimethylolpropane, pentaerythritol, erythritol, diglycerol, sorbitan, sorbitol, bis(trimethylolpropane), dipentaerythritol, and sucrose; more preferably, glycerol, trimethylolpropane, pentaerythritol, erythritol, diglycerol, and sorbitan; and even more preferably, glycerol and trimethylolpropane.

[0051] The fatty acids constituting the ester compound (L2) can be saturated or unsaturated. There is no particular limitation on the number of unsaturated bonds; however, if there are three or more unsaturated bonds, the fatty acids deteriorate due to oxidation, and the processing agent thickens, impairing lubricity. Therefore, one or two unsaturated bonds are preferred. From the viewpoint of balancing oil film strength and lubricity, the number of carbon atoms in the fatty acid is preferably 8 to 24, more preferably 10 to 20, and even more preferably 12 to 18. One or more fatty acids can be used, and saturated and unsaturated fatty acids can also be used in combination.

[0052] Although the ester compound (L2) is a compound having two or more ester bonds in the molecule, from the viewpoint of not causing blockage of the oil supply line during long-term storage, it is preferable to be a compound having three or more ester bonds in the molecule, and more preferably a compound having three ester bonds in the molecule.

[0053] There are no specific limitations on the iodine value of ester compounds (L2).

[0054] The weight-average molecular weight of the ester compound (L2) is preferably 300–1200, more preferably 300–1000, and even more preferably 500–1000. When the weight-average molecular weight is less than 300, the oil film strength is insufficient, sometimes resulting in increased fuzz or increased smoke during heat treatment. On the other hand, when the weight-average molecular weight exceeds 1200, the smoothness is insufficient, and fuzzing is more frequent, not only failing to obtain high-quality fibers but sometimes also leading to a deterioration in quality during weaving and knitting processes. It should be noted that the weight-average molecular weight of the present invention was calculated using a high-speed gel permeation chromatography apparatus (HLC-8220GPC) manufactured by Tosoh Corporation, injected at a sample concentration of 3 mg / cc into separation columns (KF-402HQ and KF-403HQ) manufactured by Showa Denko Corporation, based on the peaks measured using a differential refractive index detector.

[0055] Examples of ester compounds (L2) include: trimethylolpropane trioctanoate, trimethylolpropane tridecanoate, trimethylolpropane trilaurate, trimethylolpropane trioleate, trimethylolpropane (laurate, myristate, palmitate), trimethylolpropane (laurate, myristate, oleate), trimethylolpropane (tripalmitin fatty acid ester), trimethylolpropane (tricoccus oil fatty acid ester), coconut oil, rapeseed oil, palm oil, glyceryl trilaurate, glyceryl trioleate, glyceryl triisostearate, pentaerythritol tetraoctanoate, pentaerythritol tetradecanoate, pentaerythritol tetralaurate, pentaerythritol tetralaurate, pentaerythritol (tetrapalmitin fatty acid ester), pentaerythritol (tetracoccus oil fatty acid ester), 1,6-hexanediol dioleate, etc.

[0056] Ester compounds (L2) can be substances synthesized using commercially available fatty acids and aliphatic polyols through known methods. Alternatively, natural esters that meet the composition of ester compounds (L2) can be directly used from natural fruits, seeds, or flowers, or natural esters can be purified using known methods as needed, or further purified esters can be obtained by separating and refining the purified esters using known methods based on melting point differences. Additionally, esters obtained by transesterification of two or more natural esters (oils) can also be used.

[0057] 3) Ester compounds (L3)

[0058] Ester compounds (L3) are compounds with a structure formed by the ester bond of an aliphatic monohydric alcohol and an aliphatic polycarboxylic acid, and are compounds that do not contain polyoxyalkylene groups within the molecule. One or more ester compounds (L3) may be used.

[0059] The aliphatic monohydric alcohol constituting the ester compound (L3) is not particularly limited, and one or more types can be used. The aliphatic monohydric alcohol can be saturated or unsaturated. Regarding the number of unsaturated bonds, there is no particular limitation; however, if there are two or more unsaturated bonds, the lubricity is impaired due to oxidation and thickening of the treatment agent. Therefore, one unsaturated bond is preferred. From the viewpoint of preventing blockage of the oil supply line during long-term storage, the number of carbon atoms in the aliphatic monohydric alcohol is preferably 8 to 24, more preferably 14 to 24, and even more preferably 18 to 22. One or more aliphatic monohydric alcohols can be used, and saturated and unsaturated aliphatic monohydric alcohols can also be used in combination.

[0060] Examples of aliphatic monohydric alcohols include: octanol, isooctanol, lauryl alcohol, myristol, myristoyl alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, transoleyl alcohol, isoleyl alcohol, eicosenoyl alcohol, arachidyl alcohol, isoeicosenoyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodococosenoyl alcohol, erucic acid alcohol, tetracosenoyl alcohol, isodococosenoyl alcohol, neryl alcohol, wax alcohol, linalool, benzyl alcohol, etc. Among them, octanol, isooctanol, lauryl alcohol, myristol, myristoyl alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, transoleyl alcohol, isoleyl alcohol, eicosenoyl alcohol, arachidyl alcohol, isoelectrocoyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodococoyl alcohol, erucic acid alcohol, tetracosenoyl alcohol, isodococoyl alcohol, and neritol are preferred; myristoyl alcohol, palmitoleyl alcohol, oleyl alcohol, transoleyl alcohol, isoleyl alcohol, eicosenoyl alcohol, eicosenoyl alcohol, erucic acid alcohol, and neritol are even more preferred; and oleyl alcohol, transoleyl alcohol, isoleyl alcohol, eicosenoyl alcohol, eicosenoyl alcohol, and erucic acid alcohol are even more preferred.

[0061] There are no particular limitations on the aliphatic polycarboxylic acid constituting the ester (L3), as long as it is divalent or higher; one or more can be used. The aliphatic polycarboxylic acid used in this invention does not include sulfur-containing polycarboxylic acids such as thiodipropionic acid. The aliphatic polycarboxylic acid is preferably divalent. Similarly, it is preferable that it does not contain hydroxyl groups within the molecule.

[0062] Examples of aliphatic polycarboxylic acids include: citric acid, isocitric acid, malic acid, aconitic acid, oxaloacetic acid, oxaloylsuccinic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, octanoic acid, azelaic acid, and sebacic acid. Among these, aconitic acid, oxaloacetic acid, oxaloylsuccinic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, octanoic acid, azelaic acid, and sebacic acid are preferred, and fumaric acid, maleic acid, adipic acid, pimelic acid, octanoic acid, azelaic acid, and sebacic acid are even more preferred.

[0063] Examples of ester compounds (L3) include: dioctyl adipate, dilauryl adipate, dioleate adipate, diisoceryl adipate, dioctyl sebacate, dilauryl sebacate, dioleate sebacate, diisoceryl sebacate, etc.

[0064] Ester compounds (L3) are compounds with two or more ester bonds within their molecules. There are no particular limitations on the iodine value of ester compounds (L3).

[0065] The weight-average molecular weight of the ester compound (L3) is preferably 500 to 1000, more preferably 500 to 800, and even more preferably 500 to 700. When the weight-average molecular weight is less than 500, the oil film strength is insufficient, sometimes resulting in increased fluffing or increased smoke during heat treatment. On the other hand, when the weight-average molecular weight exceeds 1000, the melting point becomes higher, which can cause scum to form during the weaving or knitting process, sometimes resulting in poor quality.

[0066] 4) Aromatic ester compounds (L4)

[0067] Aromatic ester compounds (L4) are ester compounds having at least one aromatic ring within their molecule. Specifically, examples include ester compounds (L4-1) with a structure formed by an ester bond between an aromatic carboxylic acid and an alcohol, and ester compounds (L4-2) with a structure formed by an ester bond between an aromatic alcohol and a carboxylic acid. Furthermore, aromatic ester compounds (L4) are compounds that do not contain a polyoxyalkylene group within their molecule. One or more aromatic ester compounds (L4) may be used.

[0068] 5) Sulfur-containing ester compounds (L5)

[0069] The sulfur-containing ester compound is selected from at least one diester compound of thiodipropionic acid and aliphatic alcohol and a monoester compound of thiodipropionic acid and aliphatic alcohol.

[0070] Sulfur-containing ester compounds are components with antioxidant capabilities. Using these sulfur-containing ester compounds can improve the heat resistance of the treatment agent. One or more sulfur-containing ester compounds can be used. The molecular weight of the thiodipropionic acid constituting the sulfur-containing ester compound is preferably 400-1000, more preferably 500-900, and even more preferably 600-800. The aliphatic alcohol constituting the sulfur-containing ester compound can be saturated or unsaturated. Furthermore, the aliphatic alcohol can be linear or branched, but a branched structure is preferred. The number of carbon atoms in the aliphatic alcohol is preferably 8-24, more preferably 12-24, and even more preferably 16-24. Examples of aliphatic alcohols include octanol, 2-ethylhexanol, decanol, lauryl alcohol, myristol, isocetyl alcohol, oleyl alcohol, and isostearyl alcohol, among which oleyl alcohol and isostearyl alcohol are preferred.

[0071] 6) Mineral oil (L6)

[0072] Furthermore, the diluent of the synthetic fiber treatment agent of the present invention may contain mineral oil as a smoothing component other than those mentioned above. The mineral oil referred to here is not a straight-chain hydrocarbon (P) or a low-viscosity diluent (D), but rather is contained within a non-volatile component. There are no particular limitations on the mineral oil; examples include machine oil, spindle oil, and liquid paraffin. One or more types of mineral oil may be used. The viscosity of the mineral oil at 30°C is preferably 100 to 500 seconds.

[0073] As a smoothing component (L), from the viewpoint of not causing blockage of the oil supply line during long-term storage, it is preferable to use a substance that has been refined by removing catalysts and the like.

[0074] [Nonionic surfactant (N)]

[0075] From the viewpoint of improving the strength, cohesion, and yarn-making properties of the oil film applied to the raw yarn, the diluted solution of the synthetic fiber treatment agent of the present invention must contain a nonionic surfactant (N) in addition to the smoothing component (L) described above. Furthermore, the nonionic surfactant (N) refers to any component other than the smoothing component (L) described above. One or more nonionic surfactants (N) may be used.

[0076] The nonionic surfactant (N) is at least one selected from polyoxyalkylene polyol ether, polyoxyalkylene polyol fatty acid ester, polyoxyalkylene aliphatic alcohol ether, fatty acid ester of polyalkylene diol, and polyol fatty acid ester.

[0077] (Polyoxyalkylene polyol ether)

[0078] Polyoxyalkylene polyol ethers refer to compounds with structures formed by the addition of polyols to ethylene oxide, propylene oxide, butane oxide, and other epoxides.

[0079] Examples of polyols include: ethylene glycol, glycerol, trimethylolpropane, pentaerythritol, diglycerol, sorbitan, sorbitol, bis(trimethylolpropane), dipentaerythritol, and sucrose. Among these, glycerol, trimethylolpropane, and sucrose are preferred.

[0080] The preferred molar number of epoxides added is 3 to 100, more preferably 4 to 70, and even more preferably 5 to 50. The proportion of ethylene oxide in the epoxide is preferably 50 mol% or more, and even more preferably 80 mol% or more.

[0081] The weight-average molecular weight of the polyoxyalkylene polyol ether is preferably 300 to 10,000, more preferably 400 to 8,000, and even more preferably 500 to 5,000. When the molecular weight is less than 300, it is sometimes impossible to reduce fuzz formation. On the other hand, if the molecular weight exceeds 10,000, the friction of the treatment agent increases, which not only fails to reduce fuzz formation but sometimes worsens it.

[0082] Examples of polyoxyalkylene polyol ethers include: polyethylene glycol, glycerol ethylene oxide adducts, trimethylolpropane ethylene oxide adducts, pentaerythritol ethylene oxide adducts, diglycerol ethylene oxide adducts, sorbitan ethylene oxide adducts, sorbitan ethylene oxide propylene oxide adducts, sorbitol ethylene oxide adducts, sorbitol ethylene oxide propylene oxide adducts, di(trimethylolpropane) ethylene oxide adducts, dipentaerythritol ethylene oxide adducts, sucrose ethylene oxide adducts, etc., but are not limited to these.

[0083] (Polyoxyalkylene polyol fatty acid esters)

[0084] Polyoxyalkylene polyol fatty acid esters refer to compounds that have a structure formed by ester bonding of a compound obtained by adding epoxides such as ethylene oxide, propylene oxide, and butane oxide to a polyol with a fatty acid.

[0085] Examples of polyols include: glycerol, trimethylolpropane, pentaerythritol, erythritol, diglycerol, sorbitan, sorbitol, bis(trimethylolpropane), dipentaerythritol, and sucrose. Among these, glycerol, diglycerol, sorbitan, and sorbitol are preferred.

[0086] As fatty acids, examples include: lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, isocetyl acid, stearic acid, isostearic acid, oleic acid, transoleic acid, linoleic acid, linolenic acid, arachidic acid, eicosapentaenoic acid, behenic acid, isotonic acid, erucic acid, tetracosanoic acid, isotonicoic acid, etc.

[0087] The preferred molar number of epoxides added is 3 to 100, more preferably 5 to 70, and even more preferably 10 to 50. The proportion of ethylene oxide in the epoxide is preferably 50 mol% or more, and even more preferably 80 mol% or more.

[0088] The weight-average molecular weight of the polyoxyalkylene polyol fatty acid ester is preferably 300 to 7000, more preferably 500 to 5000, and even more preferably 700 to 3000. When the molecular weight is less than 300, fumes are generated during the heat treatment process, which can sometimes deteriorate the environment. In addition, it is sometimes impossible to reduce the generation of fuzz. On the other hand, if the molecular weight exceeds 7000, the friction of the treatment agent becomes high, which not only fails to reduce the generation of fuzz but can sometimes worsen it.

[0089] Examples of polyoxyalkylene polyol fatty acid esters include: glycerol ethylene oxide adduct monolaurate, glycerol ethylene oxide adduct dilaurate, glycerol ethylene oxide adduct trilaurate, trimethylolpropane ethylene oxide adduct trilaurate, sorbitan ethylene oxide adduct monooleate, sorbitan ethylene oxide adduct dioleate, sorbitan ethylene oxide adduct trioleate, sorbitan ethylene oxide adduct propylene oxide adduct monooleate, sorbitan ethylene oxide adduct propylene oxide adduct dioleate, sorbitan ethylene oxide adduct propylene oxide adduct trioleate, sorbitan ethylene oxide adduct propylene oxide adduct trilaurate, sucrose ethylene oxide adduct trilaurate, etc., but are not limited to these.

[0090] (Polyoxyalkylene aliphatic alcohol ethers)

[0091] Polyoxyalkylene aliphatic alcohol ethers refer to compounds with structures formed by the addition of aliphatic monohydric alcohols to ethylene oxide, propylene oxide, butane oxide, and other epoxides.

[0092] Examples of polyoxyalkylene aliphatic alcohol ethers include epoxide adducts of aliphatic alcohols such as octanol, 2-ethylhexanol, decanol, lauryl alcohol, tridecaneol, myristol, stearyl alcohol, isostearyl alcohol, and oleyl alcohol.

[0093] The preferred molar number of ethylene oxide additions is 1 to 100 moles, more preferably 2 to 70 moles, and even more preferably 3 to 50 moles. Furthermore, the proportion of ethylene oxide relative to the total ethylene oxide is preferably 20 mol% or more, more preferably 30 mol% or more, and even more preferably 40 mol% or more.

[0094] (Fatty acid esters of polyalkylene glycols)

[0095] Fatty acid esters of polyalkylene glycols refer to compounds having a structure formed by ester bonds between polyoxyethylene glycol, polyoxyethylene polyoxypropylene glycol, and fatty acids. The weight-average molecular weight of the polyalkylene glycol is preferably 100–1000, more preferably 150–800, and even more preferably 200–700.

[0096] Examples of polyalkylene glycol fatty acid esters include: polyethylene glycol monolaurate, polyethylene glycol dilaurate, polyethylene glycol monooleate, polyethylene glycol dioleate, polyethylene glycol monostearate, polyethylene glycol distearate, polyethylene polypropylene glycol monolaurate, polyethylene polypropylene glycol dilaurate, polyethylene polypropylene glycol monooleate, polyethylene polypropylene glycol monooleate, etc., but are not limited to these.

[0097] (Polyol fatty acid esters)

[0098] Polyol fatty acid esters refer to compounds with a structure formed by the ester bond between polyols and fatty acids, and are compounds other than the smoothing component (L) mentioned above.

[0099] Examples of polyols include: ethylene glycol, trimethylolpropane, pentaerythritol, erythritol, diethylene glycol, diglycerol, sorbitan, sorbitol, bis(trimethylolpropane), and sucrose. Among these, ethylene glycol, glycerol, diglycerol, sorbitan, and sorbitol are preferred.

[0100] As fatty acids, examples include: lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, isocetyl acid, stearic acid, isostearic acid, oleic acid, transoleic acid, linoleic acid, linolenic acid, isoeicosanoic acid, codoleic acid, eicosaenoic acid, docosanoic acid, isoocosanoic acid, erucic acid, tetracosanoic acid, etc.

[0101] In addition, the polyol fatty acid ester has at least one or two hydroxyl groups.

[0102] The weight-average molecular weight of the polyol fatty acid ester is preferably 100 to 1000, more preferably 200 to 800, and even more preferably 300 to 600.

[0103] Examples of fatty acid esters include: glycerol monolaurate, glycerol dilaurate, glycerol monooleate, glycerol dioleate, sorbitan monooleate, sorbitan dioleate, sucrose monolaurate, sucrose dilaurate, etc., but are not limited to these.

[0104] From the viewpoint of improving heat resistance, it is preferable to use a substance that has been refined by removing catalysts and the like as a nonionic surfactant (N).

[0105] [Oil film enhancer (H)]

[0106] The oil film enhancer (H) is at least one selected from nonionic polyoxyalkylene hydroxy fatty acid polyol esters (hereinafter, sometimes referred to as polyhydroxy esters) and esters obtained by capping at least one hydroxyl group of the polyhydroxy ester with a fatty acid. The oil film enhancer (H) is not included in the lubricant (L) and nonionic surfactant (N).

[0107] (Polyhydroxy ester, an ester formed by capping at least one hydroxyl group of a polyhydroxy ester with a fatty acid)

[0108] Structurally, polyhydroxy esters are esters of polyoxyalkylene-containing hydroxy fatty acids and polyols, preferably in which two or more hydroxyl groups of the polyol are esterified. Therefore, polyoxyalkylene-containing hydroxy fatty acid polyol esters are esters with multiple hydroxyl groups.

[0109] Hydroxy fatty acids containing polyoxyalkylene have a structure in which the polyoxyalkylene is bonded to the hydrocarbon group of the fatty acid via an oxygen atom, and the single end of the polyoxyalkylene that is not bonded to the hydrocarbon group of the fatty acid is a hydroxyl group.

[0110] Examples of polyhydroxy esters include alkylene oxide adducts of esters of hydroxy fatty acids having 6 to 22 carbon atoms (preferably 16 to 20) and polyols.

[0111] Examples of hydroxy fatty acids with 6 to 22 carbon atoms include: hydroxyoctanoic acid, hydroxydecanoic acid, hydroxylauric acid, hydroxystearic acid, and ricinoleic acid, with hydroxyoctadecanoic acid and ricinoleic acid being preferred. Examples of polyols include: ethylene glycol, glycerol, sorbitol, sorbitan, trimethylolpropane, and pentaerythritol, with glycerol being preferred. Examples of epoxides include: ethylene oxide, propylene oxide, and butane oxide, with 2 to 4 carbon atoms.

[0112] The preferred molar number of epoxides added is 3 to 60, more preferably 8 to 50. The proportion of ethylene oxide in the epoxide is preferably 50 mol% or more, more preferably 80 mol% or more.

[0113] When adding two or more epoxides, there is no particular restriction on the order of addition, and the addition can be either block addition or random addition. The addition of epoxides can be carried out by known methods, but is usually done in the presence of a basic catalyst.

[0114] Polyhydroxy esters can be manufactured, for example, by esterifying a polyol with a hydroxy fatty acid (hydroxy monocarboxylic acid) under normal conditions to obtain an esterified product, followed by an addition reaction of the esterified product with an epoxide. Polyhydroxy esters can also be appropriately manufactured using naturally derived oils such as castor oil, hydrogenated castor oil with added hydrogen, and subsequently by an addition reaction of an epoxide.

[0115] This ester is obtained by capping at least one hydroxyl group of the above-mentioned polyhydroxy ester with a fatty acid. The capped fatty acid preferably has 6 to 24 carbon atoms, more preferably 12 to 18. The number of carbon atoms in the hydrocarbon group of the fatty acid can be distributed, and the hydrocarbon group can be linear or branched, saturated or unsaturated, and can also have a polycyclic structure. Examples of such fatty acids include: lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, eicosanoic acid, benzyl acid, tetracosanoic acid, etc. There are no particular limitations on the esterification method or reaction conditions; known methods and common conditions can be used.

[0116] Examples of polyhydroxy esters and esters formed by capping at least one hydroxyl group of a polyhydroxy ester with a fatty acid include, for example, hydrogenated castor oil ethylene oxide adduct, POE(20) hydrogenated castor oil, castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide adduct monooleate, hydrogenated castor oil ethylene oxide adduct dioleate, hydrogenated castor oil ethylene oxide adduct trioleate, POE(20) hydrogenated castor oil trioleate, and castor oil ethylene oxide adduct. Among the following, hydrogenated castor oil ethylene oxide adduct trioleate, hydrogenated castor oil ethylene oxide adduct tristearate, castor oil ethylene oxide adduct tristearate, and POE(20) hydrogenated castor oil tristearate, considering the compatibility of the treatment agent, oil film strength, and reduction of fuzz, hydrogenated castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide adduct trioleate, and hydrogenated castor oil ethylene oxide adduct tristearate are preferred.

[0117] From the viewpoint of maximizing the effectiveness of this application, the oil film enhancer (H) is preferably a condensate of an ethylene oxide adduct of hydrogenated castor oil and a dicarboxylic acid.

[0118] [Organic sulfonates (AS)]

[0119] Examples of organic sulfonates (AS) include aromatic sulfonates and aliphatic sulfonates.

[0120] Examples of aromatic sulfonates include: sodium toluenesulfonate, potassium ethylbenzenesulfonate, lithium propanesulfonate, sodium butanesulfonate, potassium hexanesulfonate, lithium octanesulfonate, sodium nonylbenzenesulfonate, triethanolamine nonylbenzenesulfonate, potassium decabenzenesulfonate, sodium dodecylbenzenesulfonate, potassium dodecylbenzenesulfonate, sodium tetradecylbenzenesulfonate, and potassium octadecylbenzenesulfonate. Among these, aromatic sulfonates containing alkyl groups with 1 to 12 carbon atoms, such as sodium toluenesulfonate, sodium nonylbenzenesulfonate, triethanolamine nonylbenzenesulfonate, sodium dodecylbenzenesulfonate, and potassium dodecylbenzenesulfonate, are preferred.

[0121] As aliphatic sulfonates, there are no particular limitations; examples include: sodium alkane sulfonate, sodium 1-octyl sulfonate, potassium 1-decane sulfonate, sodium 1-lauryl sulfonate, sodium 1-myristyl sulfonate, potassium 1-cetyl sulfonate, sodium 1-stearyl sulfonate, sodium isooctyl sulfonate, sodium isodecane sulfonate, sodium isolauryl sulfonate, sodium isomyristyl sulfonate, sodium isoctyl sulfonate, sodium isostearyl sulfonate, potassium diisobutyl sulfosuccinate, sodium di-2-ethylhexyl sulfosuccinate, sodium dioctyl sulfosuccinate, sodium dinonyl sulfosuccinate, etc. These components can be used individually or in combination of two or more. Preferably, at least one compound selected from the compounds shown in Chemical Formula 7 and Chemical Formula 8 is included. Using these compounds further enhances the effectiveness of the invention, particularly reducing tar and white powder contamination generated during the yarn-making process.

[0122] [Organophosphates (AP)]

[0123] As organophosphates (APs), there are no particular limitations, but the following can be listed: POE(8) oleyl phosphate alkyl amino ether salt, isocetyl phosphate POE alkyl amino ether salt, oleyl phosphate dibutylethanolamine salt, isocetyl phosphate · POE(10) lauryl amino ether salt, isocetyl phosphate · POE(10) lauryl amino ether salt, isocetyl phosphate · POE(10) stearyl amino ether salt, tridecyl phosphate · POE(3) lauryl amino ether salt, POE(8) oleyl ether phosphate · POE(2) lauryl amino ether salt, etc.

[0124] Additionally, POE(8) represents the addition of 8 moles of polyoxyethylene.

[0125] [Ethylene oxide adducts (RAs) of organic amines]

[0126] Ethylene oxide adducts (RAs) of organic amines are compounds having a structure formed by the addition of ethylene oxide to an organic amine.

[0127] Examples of organic amines include: 1) aliphatic amine compounds such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, butylamine, dibutylamine, tributylamine, octylamine, laurylamine, stearylamine, and oleylamine; 2) alkanolamine compounds such as monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, and triisopropanolamine; and 3) aliphatic alkanolamine compounds such as N,N-bis(hydroxyethyl)butylamine, N,N-bis(hydroxyethyl)octylamine, and N,N-bis(hydroxyethyl)laurylamine.

[0128] From the viewpoint of maximizing the effect of this application, the molar number of ethylene oxide additions is preferably 1 to 40, more preferably 2 to 30, and even more preferably 3 to 20.

[0129] Specific examples of ethylene oxide adducts (RAs) of organic amines include: POE(10) lauryl amino ether, POE(15) oleylamino ether, POE(10) tallow alkyl amino ether, POE(10) tallow alkyl amino ether oleate, etc.

[0130] [Low viscosity diluent (D)]

[0131] As a low-viscosity diluent (D), there are no particular limitations; examples include organic solvents and water. Low-viscosity diluents (D) do not contain straight-chain hydrocarbons (P).

[0132] Specific examples of organic solvents include: hexane, ethanol, isopropanol, oleyl alcohol, ethylene glycol, propylene glycol, diethyl ether, toluene, xylene, dimethylformamide, methyl ethyl ketone, chloroform, glycerol, etc.

[0133] [Antioxidant (E)]

[0134] There are no particular limitations on the antioxidant (E), but from the viewpoint of maximizing the effects of this application, organic antioxidants are preferred. Examples of organic antioxidants include: tri(octadecyl)phosphite, N,N'-diphenyl-p-phenylenediamine, dioleyl-thiodipropionate, hindered phenolic antioxidants, etc. Among these, hindered phenolic antioxidants are preferred from the viewpoint of maximizing the effects of this application.

[0135] More preferably, the hindered phenolic antioxidants mentioned above have 1 or less tert-butyl groups and 1 or more carbonyl groups in each phenolic group.

[0136] Examples of hindered phenolic antioxidants include: 2,6-di-tert-butyl-4-methylphenol, n-octadecyl-3-(4'-hydroxy-3',5'-di-tert-butylphenyl)propionate, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,4-bis(octylthiomethyl)-o-cresol, 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate, 2,4-di-tert-pentyl-6-[1-(3,5-di-tert-pentyl-2-hydroxyphenyl)ethyl]phenyl acrylate, 2-[1-( [2-Hydroxy-3,5-Di-tert-pentylphenyl]acrylate, tetra[methylene-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]methane, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanuric acid, bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionic acid][ethylenebis(oxoethylene)], 3,9-bis[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxy]-1,1-dimethylene]-2,4,8,10-tetraoxazaspiro[5,5]undecane, 4,4'-butylenebis(3-methyl-6-tert-butyl)phenol, etc.

[0137] These hindered phenolic antioxidants can be used in combination with one or more.

[0138] [Method for manufacturing a diluent for a treatment agent used on synthetic fibers]

[0139] At least one of a smoothing agent (L) and a nonionic surfactant (N) is mixed with an antioxidant (E), and stirred at 60°C to 150°C to dissolve the antioxidant (E). The mixture is then cooled to 10°C to obtain a solution. One or more of the following are mixed: the solution, the smoothing agent (L), the nonionic surfactant (N), the oil film enhancer (H), the organic sulfonate (AS), the organic phosphate (AP), the ethylene oxide adduct of an organic amine (RA), and the low viscosity diluent (D). A straight-chain hydrocarbon (P) is added to the mixture and mixed. The mixture is stirred at 30°C to 100°C for at least 1 hour, then allowed to stand for at least 10 hours, and then filtered under the following filtration conditions to obtain the final treatment solution.

[0140] Filtering conditions

[0141] Filter paper: basis weight 300-400, thickness 0.5-1, air permeability 100-150, filtration accuracy 1-5μm

[0142] Filter aid: Diatomaceous earth

[0143] The thickness of the diatomaceous earth in the filter paper: 5-20cm

[0144] Smoothing agents (L), nonionic surfactants (N), oil film enhancers (H), organic sulfonates (AS), organic phosphates (AP), ethylene oxide adducts of organic amines (RA), low-viscosity diluents (D), and straight-chain hydrocarbons (P) may be the same substances as those described in [Diluents for Treatment Agents for Synthetic Fibers].

[0145] [Diluent for treating synthetic fibers]

[0146] The synthetic fiber treatment agent in the "diluent for synthetic fiber treatment agent" of the present invention refers to components other than linear hydrocarbons (P). Examples of components other than linear hydrocarbons (P) include: smoothing agents (L), nonionic surfactants (N), oil film reinforcing agents (H), organic sulfonates (AS), organic phosphates (AP), ethylene oxide adducts of organic amines (RA), low-viscosity diluents (D), and antioxidants (E). The diluent of the "diluent for synthetic fiber treatment agent" refers to a solution containing linear hydrocarbons (P).

[0147] The diluted solution of the synthetic fiber treatment agent of the present invention can also be further diluted with linear hydrocarbons (P) or the like during fiber treatment.

[0148] The weight percentage of the aforementioned linear hydrocarbon (P) in the diluted solution of the synthetic fiber treatment agent is 8% to 50% by weight, preferably 10% to 40% by weight, more preferably 12% to 30% by weight, and even more preferably 15% to 20% by weight. If it is less than 8% by weight or more than 50% by weight, the pile will increase.

[0149] From the viewpoint of uniform adhesion, the high-temperature cloud point of the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 50°C or higher, more preferably 55°C or higher, and even more preferably 60°C or higher. The preferred upper limit of the high-temperature cloud point is 90°C.

[0150] From the viewpoint of uniform adhesion, the low-temperature cloud point of the diluted solution of the synthetic fiber treatment agent of the present invention is preferably below 10°C, more preferably below 5°C, and even more preferably below 0°C. The preferred lower limit of the low-temperature cloud point is -10°C.

[0151] From the viewpoints of uniform adhesion and the dispersion of the treatment agent from the oil supply device, the kinematic viscosity of the diluted synthetic fiber treatment agent of the present invention at 30°C is preferably 10 mm. 2 / s~100mm 2 The range of / s is more preferably 20mm. 2 / s~90mm 2 / s, further preferably 40mm 2 / s~85mm 2 / s.

[0152] From the viewpoint of nozzle clogging, the cleanliness of the treatment agent for synthetic fibers of the present invention is preferably 17 / 16 / 14 or less, more preferably 15 / 14 / 12 or less, even more preferably 14 / 13 / 11 or less, and particularly preferably 13 / 11 / 9 or less.

[0153] ISO ratings (4406:1999) represent the distribution of contaminant particles in a liquid by counting the solid particles contained in a 100ml sample. Since using actual count values ​​results in a wider range of values, an international standard converts these values ​​into a code representing the degree of contamination using a logarithm of 2. The code is calculated based on the count values ​​of particles larger than 4μm, larger than 6μm, and larger than 14μm.

[0154] For the dilution of the treatment agent for synthetic fibers, the number of contaminant particles C per 100 ml of dilution is determined using a liquid particulate meter (e.g., HACH ULTRAANALYTICS, HIAC Royco System 8011, etc.). D .

[0155] From the viewpoint of maximizing the effectiveness of this application, in every 100 ml of the diluted solution of the synthetic fiber treatment agent of the present invention, the number of pollutant particles larger than 4 μm is preferably 130,000 or less, more preferably 64,000 or less, and even more preferably 32,000 or less.

[0156] From the viewpoint of maximizing the effect of this application, the weight ratio of the above-mentioned smoothing agent (L) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 15% to 80% by weight, more preferably 20% to 70% by weight, further preferably 25% to 60% by weight, and particularly preferably 30% to 55% by weight.

[0157] From the viewpoint of maximizing the effect of this application, the weight ratio of the above-mentioned nonionic surfactant (N) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 3% to 40% by weight, more preferably 5% to 30% by weight, further preferably 7% to 25% by weight, and particularly preferably 10% to 23% by weight.

[0158] From the viewpoint of maximizing the effect of this application, the weight ratio of the above-mentioned oil film reinforcing agent (H) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 3% to 40% by weight, more preferably 5% to 30% by weight, further preferably 7% to 25% by weight, and particularly preferably 10% to 20% by weight.

[0159] From the viewpoint of maximizing the effect of this application, the weight ratio of the above-mentioned organic sulfonate (AS) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 0.01% to 10% by weight, more preferably 0.05% to 5% by weight, further preferably 0.1% to 3% by weight, and particularly preferably 0.5% to 2% by weight.

[0160] From the viewpoint of maximizing the effect of this application, the weight ratio of the above-mentioned organophosphate (AP) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 0.01% to 10% by weight, more preferably 0.05% to 5% by weight, further preferably 0.1% to 3% by weight, and particularly preferably 0.5% to 2% by weight.

[0161] From the viewpoint of maximizing the effects of this application, the weight ratio of the above-mentioned organic amine ethylene oxide adduct (RA) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 0.01% to 10% by weight, more preferably 0.05% to 5% by weight, further preferably 0.1% to 3% by weight, and particularly preferably 0.5% to 2% by weight.

[0162] From the viewpoint of maximizing the effect of this application, the weight ratio of the antioxidant (E) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 0.01% to 10% by weight, more preferably 0.05% to 5% by weight, further preferably 0.1% to 3% by weight, and particularly preferably 0.5% to 2% by weight.

[0163] From the viewpoint of maximizing the effect of this application, the weight ratio of the aforementioned low-viscosity diluent (D) to the diluted solution of the synthetic fiber treatment agent of the present invention is preferably 0.01% to 10% by weight, more preferably 0.1% to 5% by weight, further preferably 0.5% to 4% by weight, and particularly preferably 1% to 3% by weight.

[0164] [Manufacturing methods and fiber structures of synthetic fiber filament yarns]

[0165] The method for manufacturing synthetic fiber filament yarn of the present invention includes a step of coating raw synthetic fiber filament yarn with a diluted solution of the synthetic fiber treatment agent of the present invention. According to the manufacturing method of the present invention, the generation of fuzz can be reduced, and synthetic fiber filament yarn with excellent yarn quality can be obtained. It should be noted that the raw synthetic fiber filament yarn in the present invention refers to synthetic fiber filament yarn that has not been coated with the diluted solution of the synthetic fiber treatment agent.

[0166] The process of applying the diluent for the synthetic fiber coating agent is not particularly limited, and known methods can be used. Typically, the diluent for the synthetic fiber coating agent is applied during the spinning process of the raw synthetic fiber filament yarn. After applying the diluent, the yarn is stretched, heat-set, and wound using hot rollers. Thus, the diluent for the synthetic fiber coating agent of the present invention can be appropriately used in cases where there is a process of temporarily not winding the yarn but performing hot stretching after coating the coating agent. For example, the temperature for hot stretching is assumed to be 190–260°C for industrial materials and 110–220°C for clothing materials, for example, for polyester and nylon.

[0167] The coating method for the diluted solution of the synthetic fiber treatment agent used to coat raw synthetic fiber filament yarn is not particularly limited, and examples include: guided oil supply, roller oil supply, immersion oil supply, and spray oil supply. Among these, guided oil supply and roller oil supply are preferred from the perspective of ease of managing the coating amount.

[0168] The coating amount of the non-volatile component of the synthetic fiber treatment agent relative to the raw synthetic fiber filament yarn is preferably 0.05% to 5% by weight, more preferably 0.1% to 3% by weight, and even more preferably 0.1% to 2% by weight. When it is less than 0.05% by weight, the effect of the present invention may not be achieved. On the other hand, when it exceeds 5% by weight, the non-volatile component of the treatment agent is prone to detaching from the yarn, and the effect of the present invention may not be achieved.

[0169] (Raw materials) As synthetic fiber filament yarns, examples include: polyester fiber, polyamide fiber, polyolefin fiber, and other synthetic fiber filament yarns. The synthetic fiber treatment agent of the present invention is suitable for synthetic fibers such as polyester fiber, polyamide fiber, and polyolefin fiber. As polyester fibers, examples include: polyester (PET) with polyethylene terephthalate as the main constituent unit, polyester (PTT) with propylene terephthalate as the main constituent unit, polyester (PBT) with butylene terephthalate as the main constituent unit, polyester (PLA) with lactic acid as the main constituent unit, etc. As polyamide fibers, examples include: nylon 6, nylon 66, etc. As polyolefin fibers, examples include: polypropylene, polyethylene, etc. The manufacturing method of the synthetic fiber filament yarn is not particularly limited, and known methods can be used.

[0170] (Fiber structure)

[0171] The fiber structure of the present invention comprises synthetic fiber filament yarns obtained by the manufacturing method of the present invention described above. Specifically, it includes synthetic fiber filament yarns woven using a diluted solution of the synthetic fiber treatment agent of the present invention, fabrics woven on a water jet loom, air jet loom, or rapier loom, and woven fabrics woven on a circular knitting machine, warp knitting machine, or weft knitting machine. Other applications of the fiber structure include: tire cords, seat belts, airbags, fishing nets, ropes, and other industrial materials, as well as clothing materials. The method for manufacturing the fabric or woven fabric is not particularly limited, and known methods can be used.

[0172] Example

[0173] The present invention will be described below through examples, but the present invention is not limited to the examples described herein. Furthermore, "%" in the text and tables refers to "weight %".

[0174] [ISO Grade (4406:1999)]

[0175] ISO classification (4406:1999) refers to the distribution of contaminant particles in a liquid by counting the solid particles contained in a 100ml sample. If actual counts are used, the represented numerical range becomes larger; therefore, it is an international standard that converts to a numbered code using the logarithm of 2 to represent the degree of contamination. The code is calculated based on the count values ​​of particles larger than 4μm, larger than 6μm, and larger than 14μm.

[0176] For the dilution of the treatment agent for synthetic fibers, the number of contaminant particles C per 100 ml of dilution is determined using a liquid particulate meter (e.g., HACH ULTRAANALYTICS, HIAC Royco System 8011, etc.). D .

[0177] [High-temperature cloud point]

[0178] Add 50g of sample (containing volatile components) to a 100ml beaker, and gradually heat it with an electric heater. The temperature at which the liquid fogs up completely is taken as the high-temperature cloud point.

[0179] [Low-temperature cloud point]

[0180] Add 50g of sample (containing volatile components) to a 100ml beaker, place it in an environmental testing machine, and slowly lower the temperature inside the environmental testing machine. The temperature at which the liquid fogs up completely is taken as the low-temperature cloud point.

[0181] The components in Tables 1 to 5 are described below.

[0182] L-1 Palm Oil

[0183] L-2 trimethylolpropane (tripalmitoyl fatty acid ester)

[0184] L-3 triglycerides

[0185] L-4-Thiodipropionic acid dioleate

[0186] N-1PEG600 dioleate

[0187] N-2POP(14)POE(12)Stearyl ether (random)

[0188] N-3POE(20) sorbitan trioleate

[0189] N-4 polyglycerol dioleate (glycerol condensation degree 1–6, average 2)

[0190] H-1POE(20) hydrogenated castor oil

[0191] H-2POE(20) hydrogenated castor oil trioleate

[0192] H-3 is a compound prepared by capping the terminal hydroxyl groups of an ester of 2 moles of hydrogenated castor oil ether of POE(20) and 1 mole of maleic acid with stearic acid.

[0193] H-4 is a compound prepared by capping the terminal hydroxyl groups of an ester of 2 moles of hydrogenated castor oil ether of POE(25) with 1 mole of maleic acid using stearic acid.

[0194] AS-1 Sodium Alkane Sulfonate

[0195] AS-2 Di(2-Ethylhexyl)sulfosuccinate

[0196] AP-1 isocetyl phosphate · POE(10) lauryl amino ether salt

[0197] AP-2 isocetyl phosphate · POE(10) stearyl amino ether salt

[0198] AP-3POE(8)Olelenyl Ether Phosphate·POE(2)Lauryl Amino Ether Salt

[0199] RA-1POE(10) lauryl amino ether

[0200] RA-2POE(15) oleylamino ether

[0201] E-1 1,3,5-Tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanuric acid

[0202] D-1 Ethylene Glycol

[0203] D-2 glycerin

[0204] D-3 Oleyl Alcohol

[0205] D-4 Water

[0206] P-1 n-Undecane

[0207] P-2 n-Dodecane

[0208] P-3 n-Tetane

[0209] P-4 n-Tetradecane

[0210] POE(n) represents the number of moles of ethylene oxide added.

[0211] PEG stands for polyethylene glycol. P-3 / P-4 in the table represent the weight % of a 13-carbon straight-chain hydrocarbon / the weight % of a 14-carbon straight-chain hydrocarbon.

[0212] [Table 1]

[0213]

[0214] [Table 2]

[0215]

[0216] [Table 3]

[0217]

[0218] [Table 4]

[0219]

[0220] [Table 5]

[0221]

[0222] (Example 1)

[0223] 30 parts by weight of palm oil as a smoothing agent (L), 27 parts by weight of trimethylolpropane (tripalmitin fatty acid ester), 2 parts by weight of dioleate thiodipropionate, and 1 part by weight of 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanuric acid as an antioxidant (E) were mixed and stirred at 110°C for 1 hour to confirm that the antioxidant (E) was dissolved. The mixture was then cooled to 40°C to obtain a solution. Add 15 parts by weight of PEG600 dioleate as a nonionic surfactant (N), 5 parts by weight of POE(20) hydrogenated castor oil as an oil film enhancer (H), 10 parts by weight of POE(20) hydrogenated castor oil trioleate, 5 parts by weight of a compound formed by capping the terminal hydroxyl groups of 2 moles of POE(20) hydrogenated castor oil ether with 1 mole of maleic acid using stearic acid, 2 parts by weight of sodium alkane sulfonate as an organic sulfonate (AS), 2 parts by weight of isocetyl phosphate · POE(10) lauryl amino ether salt as an organic phosphate (AP), 1 part by weight of POE(10) lauryl amino ether as an ethylene oxide adduct (RA) of an organic amine, 2 parts by weight of ethylene glycol as a low viscosity diluent (D), and 1 part by weight of water to the solution and mix. Add 6 parts by weight of n-tetane and 3 parts by weight of n-tetradecane as straight-chain hydrocarbons (P) to the mixture and mix. After stirring the mixture at 30–100°C for more than 1 hour, let it stand for more than 10 hours, and then filter it under the following filtration conditions to obtain a diluted solution of the synthetic fiber treatment agent.

[0224] Filtering conditions

[0225] Filter paper: basis weight 300-400, thickness 0.5-1, air permeability 100-150, filtration accuracy 1-5μm

[0226] Filter aid: Diatomaceous earth

[0227] The thickness of the diatomaceous earth in the filter paper: 5-20cm

[0228] [Kinematic viscosity of the diluted treatment agent for synthetic fibers at 30°C]

[0229] To determine the kinematic viscosity of the diluted solution of the treatment agent for synthetic fibers, 10 g of sample was added to a Canon-Fensk viscometer and kept in a constant temperature bath at 30 ± 0.1 °C for 15 minutes. Then, the outflow time (in seconds) of the sample through the marks of the viscometer was measured, and the value obtained by multiplying it by the viscometer coefficient was taken as the kinematic viscosity.

[0230] The kinematic viscosity of the diluted solution of the treatment agent for synthetic fibers is μ = f × t

[0231] {factor: 1.3043, outflow time: t[sec]}

[0232] In Examples 2 to 20 and Comparative Examples 1 to 6, the kinematic viscosity of the diluted treatment agent was also determined using the same method.

[0233] (Fluff)

[0234] In the melt spinning process, the yarn obtained by melt spinning and cooling a polyester polymer is coated with a diluted solution of the prepared treatment agent at a coating amount of 0.6% by weight of non-volatile components. The coating method is carried out using a nozzle-feeding method.

[0235] Eight yarns coated with the treatment agent were wound onto a hot roller at 8-10 mm intervals. Instead of being immediately wound up, they were continuously stretched, passing through a 250°C hot roller to a stretch of 5.1 times, yielding a 1100 dtex, 96 filament polyethylene terephthalate multifilament. The stretched and heat-set yarns were then wound up, but just before being wound up, the yarns were interlaced, and the filaments were bundled together. Interlacing was performed by spraying a high-pressure fluid, such as high-pressure air, through a nozzle. The pile was evaluated under the following conditions.

[0236] Fluff: Check the fluff count of the yarns with each treatment agent attached using a fluff counter. A value of less than 1 fluff per million meters is considered ◎, less than 2 fluffs is considered ○, and more than 2 fluffs is considered ×. ◎ and ○ indicate acceptance.

[0237] As shown in Tables 2 to 4, the diluent of the synthetic fiber treatment agent of the present invention must contain a smoothing agent (L), a nonionic surfactant (N), and a straight-chain hydrocarbon (P) with 11 to 14 carbon atoms, and contain at least one selected from oil film reinforcing agent (H), organic sulfonate (AS), organic phosphate (AP), ethylene oxide adduct of organic amine (RA), low viscosity diluent (D), and antioxidant (E). The straight-chain hydrocarbon (P) must contain a straight-chain hydrocarbon with 13 carbon atoms and a straight-chain hydrocarbon with 14 carbon atoms. The straight-chain hydrocarbon (P) may contain a straight-chain hydrocarbon with 11 carbon atoms and / or a straight-chain hydrocarbon with 12 carbon atoms, and satisfy the above formula (1). The weight proportion of the straight-chain hydrocarbon (P) in the diluent of the synthetic fiber treatment agent is 8% to 50% by weight, thus solving the problem of this application.

[0238] In particular, the lint evaluation is very good when there is a filtration process and an excellent ISO rating.

[0239] On the other hand, as can be seen from Table 5, the following cases cannot solve the problem of this application: the weight percentage of the above-mentioned straight-chain hydrocarbon (P) in the treatment agent is less than 8% (Comparative Example 1), the case that does not satisfy the above formula (1) (Comparative Examples 2 and 3), and the case that the weight percentage of the above-mentioned straight-chain hydrocarbon (P) in the treatment exceeds 50% by weight when there is no n-tetane and n-tetradecane.

[0240] Industrial practicality

[0241] Even with long-term storage, the diluted solution of the synthetic fiber treatment agent of the present invention will not cause blockage of the oil supply line, and can stably produce synthetic fibers. Therefore, it is suitable for synthetic fiber filament yarns used in industrial materials such as waterproof paper, tire cords, seat belts, airbags, fishing nets, ropes, and hanging rings, as well as in clothing materials such as fabrics and woven fabrics.

Claims

1. A diluted solution of a treatment agent for synthetic fibers, characterized in that, The diluent for the synthetic fiber treatment agent must contain a smoothing agent (L), a nonionic surfactant (N), and a straight-chain hydrocarbon (P) with 11 to 14 carbon atoms, and must contain at least one selected from oil film enhancer (H), organic sulfonate (AS), organic phosphate (AP), ethylene oxide adduct of organic amine (RA), low viscosity diluent (D), and antioxidant (E). The straight-chain hydrocarbon (P) must contain both a straight-chain hydrocarbon with 13 carbon atoms and a straight-chain hydrocarbon with 14 carbon atoms. The straight-chain hydrocarbon (P) may contain any straight-chain hydrocarbon with 11 carbon atoms and / or a straight-chain hydrocarbon with 12 carbon atoms. The straight-chain hydrocarbon (P) satisfies the following formula (1). 1 < weight% of straight-chain hydrocarbons with 13 carbon atoms / weight% of straight-chain hydrocarbons with 14 carbon atoms < 10 Equation (1). The linear hydrocarbon (P) accounts for 8% to 50% by weight in the diluted solution of the synthetic fiber treatment agent. The cleanliness of the diluted treatment agent, i.e., ISO level 4406:1999, is 17 / 16 / 14 or lower, or the number of contaminant particles larger than 4 μm in each 100 ml of the diluted treatment agent is less than 130,000. The kinematic viscosity of the diluted synthetic fiber treatment agent at 30°C is 10 mm. 2 / s~100mm 2 / s.

2. The diluted solution of the synthetic fiber treatment agent according to claim 1, wherein, The straight-chain hydrocarbon (P) also contains a straight-chain hydrocarbon with 11 carbon atoms and / or a straight-chain hydrocarbon with 12 carbon atoms.

3. The diluted solution of the synthetic fiber treatment agent according to claim 1 or 2, wherein, The high-temperature cloud point of the diluted solution of the synthetic fiber treatment agent is above 50°C, and the low-temperature cloud point is below 10°C.

4. A synthetic fiber filament yarn, characterized in that, The synthetic fiber filament yarn is made by coating raw synthetic fiber filament yarn with a diluted solution of the synthetic fiber treatment agent according to any one of claims 1 to 3.

5. A method for manufacturing synthetic fiber filament yarn, characterized in that, The method for manufacturing the synthetic fiber filament yarn includes a step of coating the raw synthetic fiber filament yarn with a diluted solution of the synthetic fiber treatment agent according to any one of claims 1 to 3.

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