Treatment agent for elastic fiber and elastic fiber

Abstract

The subject of the present invention is to provide an elastic fiber treatment agent capable of improving the smoothness and adhesion of elastic fibers, and an elastic fiber to which the elastic fiber treatment agent is attached. The elastic fiber treatment agent of the present invention is characterized in that it contains a smoothing agent (A) containing silicone (A1) and the following mineral oil (A2), the following alcohol (B), and an organic sulfonic acid phosphonium salt (C), the mass ratio of silicone (A1) to mineral oil (A2) is silicone (A1) / mineral oil (A2) = 15 / 85 to 80 / 20, and the content of alcohol (B) is 0.05 mass% or more and 10 mass% or less. The mineral oil (A2) contains an aromatic component at a ratio of 1 mass% or more. The alcohol (B) is at least one selected from a monohydric aliphatic alcohol having a branched carbon number of 8 or more and 26 or less and a straight-chain secondary alcohol.

Description

Technical Field

[0001] The present invention relates to an elastic fiber treating agent capable of improving the smoothness of elastic fibers and the adhesion of elastic fibers to other materials, and elastic fibers to which the elastic fiber treating agent is attached. Background Art

[0002] For example, elastic fibers such as polyurethane elastic fibers have stronger adhesion between fibers than other synthetic fibers. Therefore, when the elastic fibers are spun, wound into a package, and then pulled out of the package and supplied to a processing step, there is a problem that the elastic fibers are difficult to stably unwind from the package. Therefore, in order to improve the smoothness of the elastic fibers compared to the past, an elastic fiber treatment agent containing a smoothing agent such as silicone is sometimes used.

[0003] In the past, there are known treatment agents for elastic fibers disclosed in Patent Documents 1 to 3. Patent Document 1 discloses a treatment agent for elastic fibers, which contains at least one base component selected from silicone oil, mineral oil and ester oil; and a hydroxy acid having at least two carboxyl groups in the molecule. Patent Document 2 discloses a treatment agent for synthetic fibers used in elastic fibers, characterized in that it contains a hydroxyl-terminated polydimethylsiloxane having a hydroxyl group directly bonded to the terminal silicon atom of the polymer chain. Patent Document 3 discloses an oil agent for elastic fibers, which contains 0.01 to 10% by mass of an organic sulfonic acid compound or an organic sulfuric acid compound, and 99.99 to 90% by mass of a polyorganosiloxane or mineral oil having a viscosity of 2 to 50 cst.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: International Publication No. 2014 / 148368

[0007] Patent Document 2: Japanese Patent Application Publication No. 2020-45595

[0008] Patent Document 3: Japanese Patent Application Laid-Open No. 11-61651 Summary of the invention

[0009] Problems to be solved by the invention

[0010] However, conventional processing agents for elastic fibers cannot fully achieve both effects of improving the smoothness of elastic fibers to which the processing agents for elastic fibers are applied and improving the adhesion between the elastic fibers and other materials.

[0011] Means for solving problems

[0012] The present inventors have conducted studies to solve the above-mentioned problems and have found that a structure in which silicone and a predetermined mineral oil are mixed at a predetermined ratio and a predetermined alcohol and an organic sulfonic acid phosphonium salt are mixed is suitable.

[0013] In order to solve the above-mentioned problems, an elastic fiber processing agent according to one embodiment of the present invention is characterized in that it contains a smoothing agent (A) including silicone (A1) and the following mineral oil (A2), the following alcohol (B), and an organic sulfonic acid phosphonium salt (C), wherein the mass ratio of the above-mentioned silicone (A1) to the above-mentioned mineral oil (A2) is silicone (A1) / mineral oil (A2)=15 / 85 to 80 / 20, and the content of the above-mentioned alcohol (B) is 0.05 mass% or more and 10 mass% or less.

[0014] Mineral oil (A2): a mineral oil containing an aroma component (Aroma Composition) at a ratio of 1 mass % or more.

[0015] Alcohol (B): at least one selected from a branched monovalent aliphatic alcohol having 8 to 26 carbon atoms and a linear secondary alcohol.

[0016] The elastic fiber treating agent may contain the organic sulfonic acid phosphonium salt (C) in a ratio of 0.05% by mass to 10% by mass.

[0017] The elastic fiber treating agent may contain the mineral oil (A2) in a ratio of 45% by mass or more.

[0018] The silicone (A1) may include polyether-modified silicone, and the polyether-modified silicone may be contained in the elastic fiber processing agent in a ratio of 0.05% by mass to 5% by mass.

[0019] The elastic fiber processing agent may further contain an unsaturated fatty acid (D), and the unsaturated fatty acid (D) may be contained in the elastic fiber processing agent at a ratio of 0.05 mass % to 3 mass %.

[0020] In order to solve the above-mentioned problems, an elastic fiber according to one embodiment of the present invention is characterized in that the above-mentioned elastic fiber processing agent is adhered thereto.

[0021] Effects of the Invention

[0022] According to the present invention, the smoothness of elastic fibers and the adhesiveness with other materials can be improved. DETAILED DESCRIPTION

[0023] (First embodiment)

[0024] The first embodiment of the treatment agent for elastic fibers of the present invention (hereinafter also referred to as the treatment agent) is described below. The treatment agent of this embodiment includes a smoothing agent (A), an alcohol (B), and an organic sulfonic acid phosphonium salt (C). In addition, the treatment agent may further include an unsaturated fatty acid (D).

[0025] The smoothing agent (A) used in the treatment agent of the present embodiment is mixed in the treatment agent as a base component to impart smoothness to the elastic fiber. The smoothing agent (A) contains at least silicone (A1) and the mineral oil (A2) described below.

[0026] As silicone (A1), silicone oil can be cited. Specific examples of silicone oil include dimethyl silicone, phenyl-modified silicone, amino-modified silicone, amide-modified silicone, polyether-modified silicone, aminopolyether-modified silicone, alkyl-modified silicone, alkylaralkyl-modified silicone, alkylpolyether-modified silicone, ester-modified silicone, epoxy-modified silicone, methanol-modified silicone, mercapto-modified silicone, polyoxyalkylene-modified silicone, etc. These silicone oils can be suitably commercially available products defined by kinematic viscosity, etc. The kinematic viscosity can be suitably set, but the kinematic viscosity at 25°C is preferably 2 cst (mm 2 / s) and above and 10000cst(mm 2 / s) or less, more preferably 3 cst (mm 2 / s) and above 7000cst(mm 2 / s) or less. It should be noted that a range in which the upper limit and the lower limit are arbitrarily combined may be set. The kinematic viscosity at 25°C is measured in accordance with JIS Z 8803. As for the silicone (A1), one silicone may be used alone or two or more silicones may be used in combination.

[0027] The lower limit of the content of silicone (A1) in the treatment agent is preferably 5% by mass or more, more preferably 10% by mass or more. When the content is 5% by mass or more, the smoothness of the elastic fiber to which the treatment agent is applied can be improved. The upper limit of the content of silicone (A1) in the treatment agent is preferably 97% by mass or less, more preferably 96% by mass or less. When the content is 97% by mass or less, the scum generated when the elastic fiber to which the treatment agent is applied moves can be reduced. It should be noted that a range formed by arbitrarily combining the above upper and lower limits can also be set.

[0028] Silicone (A1) preferably contains polyether-modified silicone. When silicone (A1) contains polyether-modified silicone, smoothness can be further improved.

[0029] As the polyether-modified silicone, known substances can be suitably used. As the polyether-modified silicone, for example, a polyether-modified silicone having an oxidized olefin chain can be cited. As specific examples of alkylene oxides as raw materials for the oxidized olefin chain, for example, ethylene oxide, propylene oxide, etc. can be cited. As for alkylene oxides, one alkylene oxide can be used alone, or two or more alkylene oxides can be suitably used in combination. When two or more alkylene oxides are used, their addition method can be any addition method in block addition, random addition, and a combination of block addition and random addition, without particular limitation.

[0030] Examples of polyether-modified silicones include ABn-type polyether-modified silicones, side-chain polyether-modified silicones, two-end polyether-modified silicones, alkyl polyether-modified silicones having both polyether groups and alkyl groups introduced into the side chains or the ends, side-chain polyether-modified silicones in which the polyether chain ends are capped with aliphatic compounds or fatty acid compounds, and two-end polyether-modified silicones in which the polyether chain ends are capped with aliphatic compounds or fatty acid compounds. As these polyether-modified silicones, commercial products defined by kinematic viscosity and the like can be suitably used. The kinematic viscosity can be suitably set, but the kinematic viscosity at 25° C. is preferably 100 cst (mm 2 / s) and above and 10000cst(mm 2 / s) or less, more preferably 500 cst (mm 2 / s) and above 7000cst(mm 2 / s) or less. It is also possible to set a range formed by arbitrarily combining the above upper and lower limits. It should be noted that the kinematic viscosity when using multiple polyether-modified silicones is an actual measured value of a mixture of the multiple polyether-modified silicones used. Regarding polyether-modified silicones, one polyether-modified silicone may be used alone, or two or more polyether-modified silicones may be used in combination.

[0031] The lower limit of the content of the polyether-modified silicone in the treatment agent is preferably 0.05% by mass or more, more preferably 0.1% by mass or more. When the content is 0.05% by mass or more, the smoothness of the elastic fiber to which the treatment agent is applied can be improved. The upper limit of the content of the polyether-modified silicone is preferably 10% by mass or less, more preferably 5% by mass or less. When the content is 10% by mass or less, the effect of the present invention can be further improved. When the content is 5% by mass or less, the adhesion between the elastic fiber to which the treatment agent is applied and other materials can be improved. It should be noted that a range in which the above-mentioned upper and lower limits are arbitrarily combined can also be set.

[0032] The mineral oil (A2) used in the treatment agent of the present embodiment includes common petroleum fractions composed of paraffin components, cycloparaffin components, and aromatic components. The qualitative analysis and content of the aromatic components, cycloparaffin components, and paraffin components in the mineral oil are performed by ring analysis based on the ndM method specified in ASTM D3238. The contents of the aromatic components, cycloparaffin components, and paraffin components are consistent with the %C A 、%C N 、%C P The values ​​of have the same meaning.

[0033] The content of the aromatic component in the mineral oil (A2) is 1% by mass or more, preferably 1.5% by mass or more. By limiting the content to 1% by mass or more, the adhesion between the elastic fiber treated with the treatment agent and other materials can be improved.

[0034] The mineral oil (A2) can be suitably a commercial product defined by kinematic viscosity and the like. The kinematic viscosity can be suitably set, but the kinematic viscosity at 25° C. is preferably 2 cst (mm 2 / s) and above and 100cst(mm 2 The viscosity at 25° C. was measured using a Cannon-Fenske viscometer. When a plurality of mineral oils were used, the kinematic viscosity of all the mineral oils was used.

[0035] The lower limit of the content of the mineral oil (A2) in the treatment agent is preferably 20% by mass or more, more preferably 45% by mass or more. When the content is 20% by mass or more, the smoothness of the elastic fiber to which the treatment agent is applied can be improved. When the content is 45% by mass or more, the adhesion between the elastic fiber to which the treatment agent is applied and other materials can be improved. The upper limit of the content of the mineral oil (A2) in the treatment agent is preferably 85% by mass or less, more preferably 75% by mass or less. When the content is 85% by mass or less, the scum generated when the elastic fiber to which the treatment agent is applied moves can be reduced. It should be noted that a range in which the above-mentioned upper and lower limits are arbitrarily combined can also be set.

[0036] The mass ratio of silicone (A1) to mineral oil (A2) in the treatment agent is silicone (A1) / mineral oil (A2) = 15 / 85 to 80 / 20, preferably 18 / 82 to 75 / 25, and a range formed by arbitrarily combining the upper and lower limits described above can be set. By limiting the mass ratio of silicone (A1) to mineral oil (A2) to this range, the smoothness of the elastic fiber to which the treatment agent is applied and the adhesiveness to other materials can be improved.

[0037] The treatment agent of this embodiment may be used in combination with an additional smoothing agent other than the above. As the additional smoothing agent, a known substance may be appropriately used. Examples of the additional smoothing agent include ester oil and polyolefin.

[0038] The ester oil is not particularly limited, and examples thereof include ester oils produced from fatty acids and alcohols. The ester oils can be produced, for example, from fatty acids having an odd or even number of hydrocarbon groups and alcohols as described below.

[0039] The fatty acid used as the raw material of the ester oil is not particularly limited in terms of the number of carbon atoms, the presence or absence of branching, the number of valence, etc., and may be, for example, a higher fatty acid, a fatty acid having an aliphatic ring, or a fatty acid having an aromatic ring. The alcohol used as the raw material of the ester oil is not particularly limited in terms of the number of carbon atoms, the presence or absence of branching, the number of valence, etc., and may be, for example, a higher alcohol, an alcohol having an aliphatic ring, or an alcohol having an aromatic ring.

[0040] Specific examples of ester oils include: (1) ester compounds of aliphatic monoalcohols and aliphatic monocarboxylic acids, such as octyl palmitate, oleyl laurate, oleyl oleate, isotridecyl stearate, and isocosanyl oleate; (2) ester compounds of aliphatic polyols and aliphatic monocarboxylic acids, such as 1,6-hexanediol dicaprate, glycerol trioleate, trimethylolpropane trilaurate, and pentaerythritol tetraoctanoate; (3) ester compounds of aliphatic polyols and aliphatic monocarboxylic acids, such as dioleyl azelate, dioleyl thiodipropionate, di(isohexadecyl) thiodipropionate, and diisostearyl thiodipropionate. (4) Ester compounds of aliphatic monoalcohols and aliphatic polycarboxylic acids; (5) Complete ester compounds of aromatic polyols and aliphatic monocarboxylic acids such as bisphenol A dilaurate; (6) Complete ester compounds of aliphatic monoalcohols and aromatic polycarboxylic acids such as di(2-ethylhexyl) phthalate, diisostearyl isophthalate, trioctyl trimellitate; (7) Natural oils and fats such as coconut oil, rapeseed oil, sunflower seed oil, soybean oil, castor oil, sesame oil, fish oil and butter.

[0041] The polyolefin is a poly-α-olefin used as a smoothing component. Specific examples of the polyolefin include poly-α-olefins obtained by polymerizing 1-butene, 1-hexene, 1-decene, etc. A commercially available product can be appropriately used as the poly-α-olefin.

[0042] Regarding the additional smoothing agent, one type of smoothing agent may be used alone, or two or more types of smoothing agents may be used in combination.

[0043] In order to effectively demonstrate the effects of the present invention, the total content of silicone (A1) and mineral oil (A2) in the entire lubricant is preferably 80% by mass or more, more preferably 90% by mass or more.

[0044] As the alcohol (B) provided in the treatment agent of this embodiment, monohydric aliphatic alcohols with branches and linear secondary alcohols can be mentioned. The alcohol (B) can improve the adhesion between the elastic fiber provided with the treatment agent and other materials. In addition, it can reduce the scum generated when the elastic fiber provided with the treatment agent moves.

[0045] The number of carbon atoms of the monovalent aliphatic alcohol having a branch is 8 or more and 26 or less, preferably 10 or more and 24 or less. In addition, the aliphatic alcohol may be a saturated aliphatic alcohol or an unsaturated aliphatic alcohol. In addition, there is no particular limitation on the branching position of the hydrocarbon group constituting the branched chain, for example, it may be a carbon chain branched at the α position or a carbon chain branched at the β position. In addition, it may be a primary alcohol or a secondary alcohol.

[0046] Specific examples of the branched monohydric aliphatic alcohol include isooctyl alcohol, isononyl alcohol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isohexadecanol, isoheptadecanol, isostearyl alcohol, isononadecanol, isoeicosanol, isoheneicosanol, isodocosanol, isotricosanol, isotetracosanol, isopentacosanol, and isohexadecanol.

[0047] Specific examples of the monovalent aliphatic alcohol having a branch at the β-position of the alkyl chain constituting the aliphatic alcohol, i.e., Guerbet alcohols, include, for example, 2-ethyl-1-propanol, 2-ethyl-1-butanol, 2-ethyl-1-hexanol, 2-ethyl-1-octanol, 2-ethyl-decanol, 2-butyl-1-hexanol, 2-butyl-1-octanol, 2-butyl-1-decanol, 2-hexyl-1-octanol, 2-hexyl-1-decanol, 2-octyl-1-decanol, 2-octyl-1-dodecanol, 2-hexyl-1-dodecanol, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyl-1-octanol, 2-(4-methylhexyl)-8-methyl-1-decanol, 2-(1,5-dimethylhexyl)-5,9-dimethyl-1-decanol, and 2-decyl-1-tetradecanol.

[0048] The straight-chain secondary alcohol may be a monovalent aliphatic alcohol having a straight-chain hydrocarbon group. The number of carbon atoms of the straight-chain secondary alcohol is preferably 6 or more and 24 or less, more preferably 8 or more and 22 or less. The secondary alcohol may be a saturated aliphatic alcohol or an unsaturated aliphatic alcohol. The bonding position of the hydroxyl group in the hydrocarbon group is not particularly limited, and for example, the β position may be mentioned.

[0049] Specific examples of the linear secondary alcohol include 2-hexanol, 2-octanol, 2-nonanol, 2-decanol, 2-undecanol, 2-dodecanol, 2-tridecanol, 2-tetradecanol, 2-pentadecanol, 2-hexadecanol, 2-heptadecanol, 2-octadecanol, 2-nonadecanol, 2-eicosanol, 2-heneicosanol, 2-docosanol, 2-tricosanol, and 2-tetracosanol.

[0050] As the alcohol (B), one kind of alcohol may be used alone, or two or more kinds of alcohols may be used in combination.

[0051] The lower limit of the content of the alcohol (B) in the treatment agent is preferably 0.05% by mass or more, more preferably 0.1% by mass or more. When the content is 0.05% by mass or more, the adhesion between the elastic fiber to which the treatment agent is applied and other materials can be improved. And the scum generated when the elastic fiber to which the treatment agent is applied moves can be reduced. The upper limit of the content of the alcohol (B) is preferably 10% by mass or less. When the content is 10% by mass or less, the effect of the present invention can be further improved. It should be noted that a range formed by arbitrarily combining the above upper and lower limits can also be set.

[0052] By including an organic sulfonic acid phosphonium salt (C) in the treatment agent, the adhesion between the elastic fiber to which the treatment agent is applied and other materials can be improved. Examples of the organic sulfonic acid constituting the organic sulfonic acid salt include aliphatic organic sulfonic acids such as alkyl sulfonic acids, aromatic organic sulfonic acids such as diphenyl ether sulfonic acid and alkyl aryl sulfonic acids, and ester sulfonic acids. When the organic sulfonic acid contains a hydrocarbon group, the hydrocarbon may be linear or branched.

[0053] Specific examples of the aliphatic organic sulfonic acid include heptanesulfonic acid, 2-ethylhexanesulfonic acid, octanesulfonic acid, nonanesulfonic acid, decanesulfonic acid, undecanesulfonic acid, dodecanesulfonic acid, tridecanesulfonic acid, tetradecanesulfonic acid, pentadecanesulfonic acid, hexadecanesulfonic acid, heptadecanesulfonic acid, octadecanesulfonic acid, isooctanesulfonic acid, isodecanesulfonic acid, isoundecanesulfonic acid, isododecanesulfonic acid, isotridecanesulfonic acid, isotetradecanesulfonic acid, isopentadecanesulfonic acid, isohexadecanesulfonic acid, isoheptadecanesulfonic acid, isooctadecanesulfonic acid, alkyl (a mixture of 13 to 17 carbon atoms) sulfonic acid, di-2-ethylhexyl sulfosuccinate, dioctyl sulfosuccinate, dinonyl sulfosuccinate, didodecyl sulfosuccinate, didhexadecyl sulfosuccinate, diisobutyl sulfosuccinate, secondary alkylsulfonic acid (C13 to 15), and hexadecenesulfonic acid.

[0054] Specific examples of the aromatic organic sulfonic acid include p-toluenesulfonic acid, ethylbenzenesulfonic acid, decylbenzenesulfonic acid, undecylbenzenesulfonic acid, dodecylbenzenesulfonic acid, tridecylbenzenesulfonic acid, tetradecylbenzenesulfonic acid, pentadecylbenzenesulfonic acid, hexadecylbenzenesulfonic acid, dibutylnaphthalenesulfonic acid, and hexadecyldiphenylether disulfonic acid.

[0055] Specific examples of the ester sulfonic acid include dioctyl sulfosuccinate, dibutyl sulfosuccinate, dodecyl sulfoacetate, and nonylphenoxy polyethylene glycol sulfoacetate.

[0056] Specific examples of the phosphonium constituting the organic sulfonic acid phosphonium salt (C) include quaternary phosphoniums such as tetramethyl phosphonium, tetraethyl phosphonium, tetrabutyl phosphonium, tetraoctyl phosphonium, dibutyl dihexyl phosphonium, trihexyl tetradecyl phosphonium, triethyl octyl phosphonium, trioctyl methyl phosphonium and triphenyl methyl phosphonium.

[0057] Regarding the organic sulfonic acid phosphonium salt (C), one kind of the organic sulfonic acid phosphonium salt may be used alone, or two or more kinds of the organic sulfonic acid phosphonium salts may be used in combination.

[0058] The lower limit of the content ratio of the organic sulfonic acid phosphonium salt (C) in the treatment agent is preferably 0.05 mass % or more, more preferably 0.1 mass % or more. When the content ratio is 0.05 mass % or more, the adhesion of the elastic fiber to which the treatment agent is given and other materials can be improved. The upper limit of the content ratio of the organic sulfonic acid phosphonium salt (C) is preferably 10 mass % or less. When the content ratio is 10 mass % or less, the effect of the present invention can be further improved. It should be noted that the scope of the above-mentioned upper and lower limits arbitrarily combined can also be set.

[0059] The treatment agent of this embodiment may further contain unsaturated fatty acids (D). Unsaturated fatty acids (D) can reduce the scum generated when the elastic fibers to which the treatment agent is applied move. Specific examples of unsaturated fatty acids (D) include crotonic acid, myristic acid, palmitoleic acid, oleic acid, vaccenic acid, eicosenoic acid, linoleic acid, α-linolenic acid, γ-linolenic acid, arachidonic acid, and the like. As for the unsaturated fatty acids (D), one unsaturated fatty acid may be used alone, or two or more unsaturated fatty acids may be used in combination.

[0060] The lower limit of the content of the unsaturated fatty acid (D) in the treatment agent is preferably 0.05% by mass or more. When the content is 0.05% by mass or more, the scum generated when the elastic fiber to which the treatment agent is applied moves can be reduced. The upper limit of the content of the unsaturated fatty acid (D) is preferably 3% by mass or less. When the content is 3% by mass or less, the effect of the present invention can be further improved. It should be noted that a range formed by arbitrarily combining the above upper and lower limits can also be set.

[0061] (Second embodiment)

[0062] Next, a second embodiment of the elastic fiber of the present invention will be described. The treatment agent of the first embodiment is attached to the elastic fiber of this embodiment. The amount of the treatment agent of the first embodiment attached to the elastic fiber is not particularly limited, but from the perspective of further improving the effect of the present invention, it is preferably attached at a ratio of 0.1% by mass or more and 10% by mass or less based on the amount of the treatment agent excluding a solvent.

[0063] There is no particular limitation on the elastic fiber, and examples thereof include polyester elastic fibers, polyamide elastic fibers, polyolefin elastic fibers, polyurethane elastic fibers, etc. Among these, polyurethane elastic fibers are preferred. In this case, the effects of the present invention can be further enhanced.

[0064] The method for producing elastic fibers of the present embodiment includes applying oil to the elastic fibers with the treatment agent of the first embodiment. As the method for applying oil to the treatment agent, it is preferred to apply the treatment agent to the elastic fibers in the spinning process of the elastic fibers by a neat oiling method without dilution. As the attachment method, known methods such as a roller oiling method, a yarn guide oiling method, and a spray oiling method can be applied. It is common that the oiling roller is usually located between the nozzle and the traverse winding device, and it can also be applied to the production method of the present embodiment. Among these, when the treatment agent of the first embodiment is attached to the elastic fibers, such as polyurethane elastic fibers, using an oiling roller located between the stretching rollers, the effect is significant, and therefore it is preferred.

[0065] The method for producing the elastic fiber itself that can be used in the present embodiment is not particularly limited, and it can be produced by a known method. For example, wet spinning, melt spinning, dry spinning, etc. can be cited. Among these, the dry spinning method is preferably used from the perspective of excellent elastic fiber quality and production efficiency.

[0066] The effects of the treatment agent and the elastic fiber of the present embodiment will be described.

[0067] (1) The treatment agent of this embodiment contains a smoothing agent (A) containing silicone (A1) and the above-mentioned mineral oil (A2) at a predetermined ratio, the above-mentioned alcohol (B), and an organic sulfonic acid phosphonium salt (C). Therefore, it is possible to fully achieve a balance between various effects such as improvement of the smoothness of the elastic fiber provided with the treatment agent and improvement of the adhesion of the elastic fiber to other materials. In addition, it is possible to reduce the scum generated when the elastic fiber provided with the treatment agent moves.

[0068] (2) When the treatment agent of the present embodiment further contains a predetermined amount of polyether-modified silicone, the smoothness of the elastic fiber to which the treatment agent is applied can be improved.

[0069] (3) When the treatment agent of the present embodiment further contains an unsaturated fatty acid (D), scum generated when the elastic fiber to which the treatment agent is applied moves can be reduced.

[0070] It should be noted that the above-mentioned embodiment may be modified as follows: The above-mentioned embodiment and the following modified examples may be implemented in combination with each other within the scope of no technical contradiction.

[0071] The treatment agent of the above embodiment may further contain other components commonly used in treatment agents, such as stabilizers, charge control agents, thickeners, antioxidants, and ultraviolet absorbers, for maintaining the quality of the treatment agent, within the range that does not hinder the effect of the present invention. It should be noted that from the perspective of effectively exerting the effect of the present invention, the content of other components in the treatment agent is preferably 10% by mass or less, and more preferably 5% by mass or less.

[0072] Example

[0073] In order to more specifically describe the configuration and effects of the present invention, examples and the like are given below, but the present invention is not limited to these examples. It should be noted that in the following examples and comparative examples, parts refer to parts by mass, and % refers to mass %.

[0074] Test group 1 (preparation of treatment agent)

[0075] The treatment agents used in the respective Examples and Comparative Examples were prepared by the following preparation method using the respective components shown in Table 1.

[0076] (Example 1)

[0077] The 25°C kinematic viscosity of the lubricant (A) is 10 cst (mm 2 / s) of dimethyl silicone (AS-1) 47 parts (%); 25 ° C kinematic viscosity of 1000mm 2 / s, silicone main chain / polyether side chain = 80 / 20 (mass ratio), ethylene oxide / propylene oxide = 50 / 50 (molar ratio) 3 parts (%) of polyether modified silicone (AS-3); aromatic component 2.5%, 25 ° C kinematic viscosity 11cSt (mm 2 / s) of mineral oil (AM-1) 45.5 parts (%); 2-hexyl-1-decanol (B-1) 3 parts (%) as alcohol (B); dodecylbenzenesulfonic acid tetrabutyl phosphonium salt (C-1) 0.5 parts (%) as organic sulfonic acid phosphonium salt (C); oleic acid (D-1) 1 part (%) as unsaturated fatty acid (D) were fully mixed to make them uniform, thereby preparing the treating agent of Example 1.

[0078] (Examples 2 to 35, Comparative Examples 1 to 8)

[0079] In Examples 2 to 35 and Comparative Examples 1 to 8, a smoothing agent (A), an alcohol (B), an organic sulfonic acid phosphonium salt (C), and an unsaturated fatty acid (D) were mixed in the ratio shown in Table 1 in the same manner as in Example 1 to prepare a treatment agent.

[0080] The types of the components of silicone (A1), mineral oil (A2), alcohol (B), organic sulfonic acid phosphonium salt (C) and unsaturated fatty acid (D) in the treatment agent of each example, and the ratio of each component when the total content ratio of each component is 100% are shown in the "Silicone (A1)" column, "Mineral Oil (A2)" column, "Alcohol (B)" column, "Organic Sulfonic Acid Phosphonium Salt (C)" column, and "Unsaturated Fatty Acid (D)" column of Table 1. In addition, the mass ratio of silicone (A1) to mineral oil (A2) in the treatment agent of each example is shown in the "Silicone (A1) / Mineral Oil (A2) Mass Ratio" column of Table 1.

[0081] [Table 1]

[0082]

[0083] The details of silicone (A1), mineral oil (A2), alcohol (B), organic sulfonic acid phosphonium salt (C), and unsaturated fatty acid (D) described in Table 1 are as follows.

[0084] (Silicone (A1))

[0085] AS-1: Kinematic viscosity at 25°C is 10 cSt (mm 2 / s) dimethicone

[0086] AS-2: Kinematic viscosity at 25°C is 20 cSt (mm 2 / s) dimethicone

[0087] AS-3: Kinematic viscosity at 25°C is 1000 mm 2 / s, silicone main chain / polyether side chain = 80 / 20 (mass ratio), ethylene oxide / propylene oxide = 50 / 50 (molar ratio) polyether modified silicone

[0088] AS-4: Kinematic viscosity at 25°C is 2200 mm 2 / s, silicone main chain / polyether side chain = 60 / 40 (mass ratio), ethylene oxide / propylene oxide = 40 / 60 (molar ratio) polyether modified silicone

[0089] (Mineral oil (A2))

[0090] AM-1: 2.5% aromatic component, 25°C kinematic viscosity 11 cSt (mm 2 / s) of mineral oil

[0091] AM-2: aromatic component 1.6%, kinematic viscosity at 25°C 20 cSt (mm 2 / s) mineral oil

[0092] AM-3: aromatic component 7.0%, kinematic viscosity at 25°C 11 cSt (mm 2 / s) mineral oil ram-1: aromatic component 0.2%, kinematic viscosity at 25°C 18 cSt (mm 2 / s) of mineral oil (alcohol (B))

[0093] B-1: 2-Hexyl-1-decanol

[0094] B-2: 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyl-1-octanol

[0095] B-3: 2-Decyl-1-Tetradecanol

[0096] B-4: 2-Decanol

[0097] rb-1: ethanol

[0098] rb-2: 1-octadecanol

[0099] (Organic sulfonic acid phosphonium salt (C))

[0100] C-1: Tetrabutylphosphonium dodecylbenzenesulfonate

[0101] C-2: C12-14 (secondary) sulfonic acid tetrabutylphosphonium salt

[0102] C-3: Trioctylmethylphosphonium dodecylbenzenesulfonate

[0103] rc-1: dodecylbenzenesulfonic acid sodium salt

[0104] (Unsaturated fatty acids (D))

[0105] D-1: Oleic acid

[0106] D-2: Linoleic Acid

[0107] D-3: Linolenic Acid

[0108] D-4: Myristic Acid

[0109] Test Group 2 (Manufacture of elastic fibers)

[0110] A prepolymer obtained from polytetramethylene glycol with a molecular weight of 1000 and diphenylmethane diisocyanate was subjected to a chain extension reaction in a dimethylformamide solution by ethylenediamine to obtain a spinning solution with a concentration of 30%. The spinning solution was dry-spun from a spinneret in a heated gas stream. Then, the polyurethane elastic fiber after dry spinning was subjected to a pure oiling of a treatment agent by a roller oiling method using an oiling roller located between the stretching rollers before winding.

[0111] The elastic fiber to which the treatment agent was attached by roller oiling in the above manner was wound on a cylindrical paper tube of 58 mm in length at a winding speed of 600 m / min using a surface driven winding method winding machine with a traverse guide having a winding width of 38 mm to obtain a package of 1 kg or 500 g of dry-spun polyurethane elastic fiber of 40 denier. The amount of the treatment agent attached was adjusted by adjusting the rotation speed of the oiling roller to 5%.

[0112] Using the package thus obtained, smoothness and scum of the elastic fiber and adhesiveness using the nonwoven fabric were evaluated as described below.

[0113] Test group 3 (evaluation of elastic fibers)

[0114] Evaluation of smoothness

[0115] A friction tester (manufactured by EIKO Test Instruments, SAMPLE FRICTION UNIT MODEL TB-1) was used. A chrome-plated pin with a diameter of 1 cm and a surface roughness of 2S was placed between two free rollers. The polyurethane elastic fiber pulled out from the above-mentioned package (1 kg roll) was passed through the chrome-plated pin in such a way that the contact angle was set to 90 degrees. Under the conditions of 25°C and 60% RH, an initial tension (T of 5 g) was applied on the inlet side. 1 ), for the secondary tension on the outlet side when moving at a speed of 100 m / min (T 2 ) was measured. The friction coefficient was calculated from the following mathematical formula and evaluated according to the following criteria. The results are shown in the "Smoothness" column of Table 1.

[0116] [Number 1]

[0117] Friction coefficient = (2 / 3.14) × 1n(T 2 / T 1 )

[0118] Evaluation criteria for smoothness

[0119] ◎ (good): The friction coefficient is 0.150 or more and less than 0.220

[0120] ○ (Pass): The friction coefficient is 0.220 or more and less than 0.260

[0121] × (bad): friction coefficient is 0.260 or more

[0122] Evaluation of adhesion

[0123] A rubber hot melt adhesive containing styrene butadiene styrene block copolymer as the main component, which is heated and melted at 145°C, is evenly applied to a polypropylene spunbond nonwoven fabric using a roller. The nonwoven fabric coated with the adhesive is cut to produce two pieces of 40 mm × 20 mm in size. Between the adhesive-coated surfaces of the two pieces of cut fabric, 10 mm of the leading end of a 40 mm long polyurethane elastic fiber pulled out from the above-mentioned roll (1 kg roll) is sandwiched. The process temperature is 160°C and the load is 9 g / cm 2 The polypropylene spunbond nonwoven fabric of the sample was fixed to the upper sample holding part of the tensile tester (manufactured by Shimadzu Corporation, Autograph AGS), and the polyurethane elastic fiber was fixed to the lower sample holding part, and stretched at a speed of 100 mm / min. The strength (strength) required to extract the polyurethane elastic fiber from the polypropylene spunbond nonwoven fabric was measured and evaluated according to the following criteria. The results are shown in the "Adhesion" column of Table 1.

[0124] ·Evaluation criteria for adhesion

[0125] ◎ (Good): Strength is 33g or more

[0126] ○ (Pass): Strength is 30g or more and less than 33g

[0127] × (bad): strength less than 30g

[0128] Evaluation of scum

[0129] Ten yarn packages (500 g rolls) were prepared in a micro warping machine and wound at a yarn speed of 300 m / min for 200 km in an atmosphere of 25°C and 65% RH. At this time, the accumulation of scum in the comb-shaped yarn guide of the micro warping machine was visually observed and evaluated according to the following criteria. The results are shown in the "Scum" column of Table 1.

[0130] ◎ (Good): Almost no scum attached

[0131] ○ (Pass): Slight scum is attached, but there is no problem with the stable movement of the yarn

[0132] × (bad): There is a lot of scum adhesion and accumulation, and there is a significant problem in the stable movement of the yarn

[0133] The evaluation results of each example with respect to each comparative example in Table 1 show that the treatment agent of the present invention can improve the smoothness and adhesion of the elastic fiber provided with the treatment agent, and can reduce the scum generated when the elastic fiber provided with the treatment agent moves.

[0134] The present disclosure also includes the following aspects.

[0135] (Note 1)

[0136] A treatment agent for elastic fibers, characterized in that it contains a smoothing agent (A) containing silicone (A1) and the following mineral oil (A2), the following alcohol (B), and an organic sulfonic acid phosphonium salt (C), wherein the mass ratio of the above silicone (A1) to the above mineral oil (A2) is silicone (A1) / mineral oil (A2) = 15 / 85 to 80 / 20.

[0137] Mineral oil (A2): a mineral oil containing an aromatic component in a ratio of 1 mass % or more.

[0138] Alcohol (B): at least one selected from a branched monovalent aliphatic alcohol having 8 to 26 carbon atoms and a linear secondary alcohol.

[0139] (Note 2)

[0140] The elastic fiber processing agent according to Appendix 1, wherein the alcohol (B) is contained in a ratio of 0.05 mass % to 10 mass % and the organic sulfonic acid phosphonium salt (C) is contained in a ratio of 0.05 mass % to 10 mass %.

[0141] (Note 3)

[0142] The elastic fiber processing agent according to Appendix 1 or 2, wherein the mineral oil (A2) is contained in the elastic fiber processing agent at a ratio of 45% by mass or more.

[0143] (Note 4)

[0144] The elastic fiber processing agent according to any one of Appendixes 1 to 3, wherein the silicone (A1) comprises a polyether-modified silicone, and the polyether-modified silicone is contained in the elastic fiber processing agent at a ratio of 0.05% by mass to 5% by mass.

[0145] (Note 5)

[0146] The elastic fiber processing agent according to any one of Appendixes 1 to 4, further comprising an unsaturated fatty acid (D), wherein the unsaturated fatty acid (D) is contained in the elastic fiber processing agent at a ratio of 0.05 mass % to 3 mass %.

[0147] (Note 6)

[0148] An elastic fiber characterized in that the elastic fiber treating agent according to any one of Supplementary Notes 1 to 5 is adhered thereto.

Claims

1. A treatment agent for elastic fibers, It is characterized in that It contains a lubricant (A) comprising silicone (A1) and the following mineral oil (A2), the following alcohol (B), and an organic sulfonic acid phosphonium salt (C), wherein the mass ratio of the silicone (A1) to the mineral oil (A2) is silicone (A1) / mineral oil (A2)=15 / 85 to 80 / 20, and the content of the alcohol (B) is 0.05 mass % or more and 10 mass % or less, Mineral oil (A2): a mineral oil containing an aromatic component in a proportion of 1% by mass or more, Alcohol (B): at least one selected from a branched monovalent aliphatic alcohol having 8 to 26 carbon atoms and a linear secondary alcohol.

2. The elastic fiber treating agent according to claim 1, in, The organic sulfonic acid phosphonium salt (C) is contained in the elastic fiber processing agent in a ratio of 0.05 mass % to 10 mass %.

3. The elastic fiber treating agent according to claim 1 or 2, in, The mineral oil (A2) is contained in the elastic fiber processing agent at a ratio of 45 mass % or more.

4. The elastic fiber treating agent according to claim 1 or 2, in, The silicone (A1) includes a polyether-modified silicone, and the polyether-modified silicone is contained in the elastic fiber processing agent in a ratio of 0.05 mass % to 5 mass %.

5. The elastic fiber processing agent according to claim 1 or 2, further comprising an unsaturated fatty acid (D), wherein the unsaturated fatty acid (D) is contained in the elastic fiber processing agent at a ratio of 0.05 mass % to 3 mass %.

6. An elastic fiber, It is characterized in that The elastic fiber treating agent according to any one of claims 1 to 5 is adhered thereto.

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