Treatment agent for elastic fiber and elastic fiber

Abstract

To provide a treatment agent for an elastic fiber capable of reducing fiber-to-metal friction and improving unwindability, and an elastic fiber having the treatment agent for the elastic fiber attached thereto.SOLUTION: A treatment agent for an elastic fiber of the present invention comprises at least one component (A) selected from an antioxidant and a light stabilizer, and a silicone compound (B), wherein the component (A) is contained in a proportion of 0.01 mass% or more and less than 1 mass% in a non-volatile content of the treatment agent for the elastic fiber.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a processing agent for elastic fibers that can reduce fiber-metal friction and improve unwinding properties of elastic fibers to which the processing agent for elastic fibers has been applied, and to elastic fibers to which such a processing agent for elastic fibers has been applied. [Background technology]

[0002] For example, elastic fibers such as polyurethane-based elastic fibers have stronger interfiber adhesion than other synthetic fibers. Therefore, for example, after the elastic fibers are spun and wound onto a package, when they are pulled out from the package and subjected to a processing step, there is a problem that they are difficult to stably unwind from the package. For this reason, in order to improve the smoothness of the elastic fibers, a treatment agent for elastic fibers containing a smoothing agent or the like has been used in some cases.

[0003] Conventionally, a treatment agent for elastic fibers is known as disclosed in Patent Document 1. Patent Document 1 discloses an oil agent for elastic fibers containing at least one selected from the group consisting of specific phosphonic acid compounds and their salts, and an antioxidant. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-42237 Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional elastic fiber treatment agents have not been able to fully achieve both the effects of reducing fiber-to-metal friction and improving unwinding properties of the elastic fiber to which the elastic fiber treatment agent has been applied. [Means for solving the problem]

[0006] As a result of research conducted by the present inventors to solve the above-mentioned problems, they found that a suitable composition for a treatment agent for elastic fibers is one in which a predetermined amount of an antioxidant or light stabilizer is blended as component (A) with a silicone compound (B).

[0007] Various aspects for solving the above problems will be described. The treatment agent for elastic fibers in aspect 1 is a treatment agent for elastic fibers containing the following component (A) and silicone compound (B), wherein the component (A) is contained in a proportion of 0.01% by mass or more and less than 1% by mass in the nonvolatile content of the treatment agent for elastic fibers. death, The silicone compound (B) is contained in an amount of 65% by mass or less in the nonvolatile content of the treatment agent for elastic fibers, The treatment agent for elastic fibers has a kinematic viscosity of 3500 mm at 25°C as the silicone compound (B). 2 Contains only silicone compounds below / s It is characterized by:

[0008] Component (A): At least one selected from an antioxidant and a light stabilizer. Aspect 2 is the treatment agent for elastic fibers according to Aspect 1, wherein the treatment agent for elastic fibers contains the component (A) in an amount of 0.01 mass % or more and less than 0.5 mass % based on the nonvolatile content.

[0009] Aspect 3 is the treating agent for elastic fibers according to Aspect 1 or 2, wherein the component (A) is a phenol-based antioxidant. A fourth aspect is the treating agent for elastic fibers according to the third aspect, wherein the component (A) is a hindered phenol-based antioxidant.

[0010] A fifth aspect is the treatment agent for elastic fibers according to any one of the first to fourth aspects, wherein the silicone compound (B) is contained in an amount of 20 mass % or more in the nonvolatile content of the treatment agent for elastic fibers. Above Contains in proportion.

[0011] A sixth aspect is the treating agent for elastic fibers according to any one of the first to fifth aspects, further comprising the following hydrocarbon oil (C). Hydrocarbon oil (C): At least one selected from mineral oil, isoparaffin, and polyalphaolefin.

[0012] A seventh aspect is the treatment agent for elastic fibers according to the sixth aspect, wherein the hydrocarbon oil (C) is contained in a proportion of 35% by mass or more and 79.49% by mass or less of the nonvolatile content of the treatment agent for elastic fibers.

[0013] Aspect 8 is the treatment agent for elastic fibers according to Aspect 6 or 7, wherein the hydrocarbon oil (C) has a kinematic viscosity of 5 mm at 30°C. 2 / s or more 50mm 2 / s or less. A ninth aspect is the treating agent for elastic fibers according to any one of the first to eighth aspects, further comprising an organic sulfonate (D).

[0014] A tenth aspect of the present invention relates to the treating agent for elastic fibers according to the ninth aspect, wherein the treating agent for elastic fibers contains the organic sulfonate (D) in an amount of 0.5% by mass or more and 5% by mass or less based on the nonvolatile content.

[0015] The elastic fiber of the eleventh aspect is characterized in that the treating agent for elastic fibers according to any one of the first to tenth aspects is adhered to the elastic fiber. [Effects of the Invention]

[0016] According to the present invention, it is possible to reduce the fiber-metal friction of elastic fibers to which a processing agent for elastic fibers has been applied, and to improve the unwinding properties. DETAILED DESCRIPTION OF THE INVENTION

[0017] (First embodiment) A first embodiment of the treatment agent for elastic fibers (hereinafter also referred to as the treatment agent) of the present invention will be described below. The treatment agent of this embodiment contains at least one component (A) selected from an antioxidant and a light stabilizer, and a silicone compound (B). The treatment agent may also contain at least one hydrocarbon oil (C) selected from mineral oil, isoparaffin, and polyalphaolefin, and an organic sulfonate (D).

[0018] (Component (A)) The treatment agent containing component (A) can particularly improve the unwinding properties of the elastic fiber to which the treatment agent is applied. Component (A) is at least one selected from an antioxidant and a light stabilizer.

[0019] Known antioxidants can be appropriately used for the treatment agent of this embodiment. Examples of antioxidants include phenolic antioxidants, hindered phenolic antioxidants, thioether antioxidants, phosphorus-based antioxidants, amine-based antioxidants, phosphite-based antioxidants, sulfur-based antioxidants, and benzimidazole-based antioxidants. Among these, phenolic antioxidants are preferred, and hindered phenolic antioxidants are more preferred as phenolic antioxidants. The hindered phenolic antioxidant refers to a phenolic antioxidant in which one phenyl group is substituted with two or more branched hydrocarbon groups having 3 to 8 carbon atoms, or a phenolic antioxidant containing four or more 3- to 8-membered ring structures.

[0020] Specific examples of the hindered phenol antioxidant include Irganox 1010 (manufactured by BASF Japan Ltd.), Irganox 1035 (manufactured by BASF Japan Ltd.), Irganox 1076 (manufactured by BASF Japan Ltd.), Irganox 1098 (manufactured by BASF Japan Ltd.), Irganox 1135 (manufactured by BASF Japan Ltd.), Irganox 1330 (manufactured by BASF Japan Ltd.), Irganox 1425WL (manufactured by BASF Japan Ltd.), Irganox 259 (manufactured by BASF Japan Ltd.), and Irganox 3114 (manufactured by BASF Japan Ltd.). Examples of suitable ion exchangers include Adeka Stab AO-20 (Adeka Corporation), Adeka Stab AO-50 (Adeka Corporation), Adeka Stab AO-60 (Adeka Corporation), Adeka Stab AO-80 (Adeka Corporation), Adeka Stab AO-330 (Adeka Corporation), IONOX330 (Shell Chemical Industry Co., Ltd.), ISONOX129 (Schenectady Chemical Industry Co., Ltd.), Sumilizer GS (Sumitomo Chemical Co., Ltd.), BHT (Fujifilm Wako Pure Chemical Industries, Ltd.), Sumilizer GA-80 (Sumitomo Chemical Co., Ltd.), HOSTANOX O310 (Clariant Chemicals), Cyanox 1790 (Cytec), LOWINOX 1790 (SI Group), and Cheminox 179 (Chemipro Chemicals Co., Ltd.).

[0021] Specific examples of phenolic antioxidants include Irganox 1141 (manufactured by BASF Japan Ltd.), Irganox 1520L (manufactured by BASF Japan Ltd.), Irganox 245 (manufactured by BASF Japan Ltd.), Adeka Stab AO-30 (manufactured by ADEKA Corporation), Adeka Stab AO-40 (manufactured by ADEKA Corporation), Sumilizer GM (manufactured by Sumitomo Chemical Co., Ltd.), Sumilizer BBM-S (manufactured by Sumika Chemtex Co., Ltd.), Sumilizer MDP-S (manufactured by Sumitomo Chemical Co., Ltd.), Yoshinox 425 (manufactured by API Corporation), HOSTANOX O3 (manufactured by Clariant Chemicals), DRAGONOX-CA (manufactured by Guangzhou Bolong Chemical Co., Ltd.), and DRAGONOX BBM (manufactured by Guangzhou Bolong Chemical Co., Ltd.).

[0022] A specific example of the amine-based antioxidant is Irganox 5057 (manufactured by BASF Japan Ltd.). Specific examples of the phosphite-based antioxidant include ADK STAB PFP-8 (manufactured by ADEKA Corporation), ADK STAB PFP-36 (manufactured by ADEKA Corporation), ADK STAB HP-10 (manufactured by ADEKA Corporation), ADK STAB 2112 (manufactured by ADEKA Corporation), ADK STAB 1178 (manufactured by ADEKA Corporation), ADK STAB 1500 (manufactured by ADEKA Corporation), ADK STAB C (manufactured by ADEKA Corporation), ADK STAB 135A (manufactured by ADEKA Corporation), ADK STAB 3010 (manufactured by ADEKA Corporation), and ADK STAB TPP (manufactured by ADEKA Corporation).

[0023] Specific examples of thioether-based antioxidants include Adekastab AO-412S (manufactured by ADEKA Corporation) and Adekastab 503 (manufactured by ADEKA Corporation). A specific example of the benzimidazole-based antioxidant is Sumilizer MB (manufactured by Sumika Chemtex Co., Ltd.).

[0024] A specific example of the phosphorus-based antioxidant is HOSTANOX P-EPQ (manufactured by Clariant Chemicals). A specific example of the sulfur-based antioxidant is HOSTANOX SE-10 (manufactured by Clariant Chemicals).

[0025] Specific examples of light stabilizers include JAST500 (manufactured by Johoku Chemical Industry Co., Ltd.), Tinuvin 765 (manufactured by BASF Japan Ltd.), Tinuvin 123 (manufactured by BASF Japan Ltd.), Tinuvin 234 (manufactured by BASF Japan Ltd.), HN-150 (manufactured by Nippon Finechem Co., Ltd.), Chimassorb 944LD (manufactured by BASF Japan Ltd.), Adeka STAB LA-57 (manufactured by ADEKA Corporation), Adeka STAB LA-68 (manufactured by ADEKA Corporation), Adeka STAB LA-72 (manufactured by ADEKA Corporation), Adeka STAB LA-81 (manufactured by ADEKA Corporation), and Tinuvin 622SF (manufactured by BASF Japan Ltd.).

[0026] These components (A) may be used singly or in combination of two or more. The lower limit of the content of component (A) in the nonvolatile content of the treatment agent is 0.01% by mass or more. When this content is 0.01% by mass or more, the unwinding properties of the elastic fiber to which the treatment agent is applied can be further improved. The upper limit of the content of component (A) is preferably less than 1% by mass, more preferably less than 0.5% by mass. When this content is less than 1% by mass, the fiber-metal friction of the elastic fiber to which the treatment agent is applied can be reduced. Furthermore, when this content is less than 0.5% by mass, the unwinding properties and yellowing resistance of the elastic fiber to which the treatment agent is applied can be further improved. Note that ranges that combine the above upper and lower limits are also contemplated. Furthermore, the nonvolatile content refers to the treatment agent that has been heat-treated at 105°C for 2 hours to thoroughly remove volatile components. Hereinafter, the same conditions will be used to define the nonvolatile content.

[0027] (Silicone compound (B)) By including the silicone compound (B) in the treatment agent, it is possible to reduce the fiber-metal friction of the elastic fiber to which the treatment agent is applied.

[0028] Specific examples of the silicone compound (B) include, but are not limited to, 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, carbinol-modified silicone, mercapto-modified silicone, polyoxyalkylene-modified silicone, and carboxyl-modified silicone.

[0029] The kinematic viscosity of the silicone compound (B) is appropriately set. For example, the kinematic viscosity at 25°C is 2 mm 2 / s or more 10000mm 2 / s or less. Any combination of the above upper and lower limits is also contemplated. The kinematic viscosity at 25°C is measured in accordance with JIS Z 8803. In the present invention, the silicone compound (B) in the treatment agent has a kinematic viscosity of 3500 mm at 25°C. 2 Contains only silicone compounds below / s.

[0030] These silicone compounds (B) may be used singly or in combination of two or more. The lower limit of the content of the silicone compound (B) in the non-volatile content of the treatment agent is preferably 10% by mass or more, more preferably 20% by mass or more. When this content is 10% by mass or more, the fiber-metal friction of the elastic fiber to which the treatment agent is applied can be further reduced. The upper limit of the content of the silicone compound (B) is preferably 99.5% by mass or less, more preferably 65% by mass or less. When this content is 99.5% by mass or less, the oil stability of the treatment agent can be improved. Note that ranges that combine the above upper and lower limits in any desired manner are also contemplated. In the present invention, the silicone compound (B) is contained in an amount of 65 mass % or less in the nonvolatile content of the treatment agent.

[0031] (Hydrocarbon oil (C)) The processing agent containing the hydrocarbon oil (C) can further improve the shape characteristics of the package of the elastic fiber. The hydrocarbon oil (C) can be at least one selected from mineral oil, isoparaffin, and polyalphaolefin.

[0032] Examples of mineral oils include aromatic hydrocarbons, paraffinic hydrocarbons, naphthenic hydrocarbons, etc. More specifically, examples include spindle oil, liquid paraffin, etc. Commercially available mineral oils specified by kinematic viscosity, etc. may be used as appropriate.

[0033] As the isoparaffin, commercially available products specified by kinematic viscosity and the like may be appropriately used. Specific examples of polyalphaolefins include polyalphaolefins obtained by polymerizing 1-butene, 1-hexene, 1-decene, etc. Commercially available polyalphaolefins specified by kinematic viscosity, etc. may be used as appropriate.

[0034] The lower limit of the kinematic viscosity of the hydrocarbon oil (C) at 30°C is preferably 5 mm 2The upper limit of the kinematic viscosity of the hydrocarbon oil (C) at 30°C is preferably 200 mm 2 / s or less, preferably 50 mm 2 / s or less. By specifying the kinematic viscosity of the hydrocarbon oil (C) within this range, the shape characteristics of the package of the elastic fiber can be further improved. Note that ranges that combine the above upper and lower limits are also envisioned. The kinematic viscosity at 30°C is JIS It is measured in accordance with Z 8803. When multiple types of hydrocarbon oil (C) are used, the kinematic viscosity value when all the hydrocarbon oils (C) are mixed is used.

[0035] These hydrocarbon oils (C) may be used alone or in combination of two or more. The lower limit of the content of the hydrocarbon oil (C) in the non-volatile content of the treatment agent is preferably 25% by mass or more, more preferably 35% by mass or more. When this content is 25% by mass or more, the shape characteristics of the package of elastic fiber can be further improved. The upper limit of the content of the hydrocarbon oil (C) is preferably 85% by mass or less, more preferably 79.49% by mass or less. When this content is 85% by mass or less, the shape characteristics of the package of elastic fiber can be further improved. Note that ranges that combine the above upper and lower limits are also contemplated.

[0036] (Organic sulfonate (D)) The treatment agent containing the organic sulfonate (D) can further improve the antistatic properties of the elastic fiber to which the treatment agent is applied. Examples of the organic sulfonate (D) used in the treatment agent of this embodiment include aliphatic sulfonates, aliphatic sulfosuccinates, and aromatic sulfonates.

[0037] The hydrocarbon group constituting the organic sulfonic acid is not particularly limited with respect to the presence or absence of an unsaturated bond, and may be a linear or branched hydrocarbon group. In the case of a sulfonic acid having a branched hydrocarbon group, the branching position is not particularly limited, and the carbon chain may be branched at, for example, the α-position or the β-position.

[0038] Examples of the counter ion of the organic sulfonic acid include alkali metal salts such as potassium salts and sodium salts, alkaline earth metal salts such as magnesium salts and calcium salts, ammonium salts, alkanolamine salts such as triethanolamine salts, (poly)oxyalkylene alkylamine salts and dibutylethanolamine salts, and phosphonium salts.

[0039] Specific examples of organic sulfonates include lauryl sulfonate, myristyl sulfonate, cetyl sulfonate, oleyl sulfonate, stearyl sulfonate, tetradecane sulfonate, dodecylbenzene sulfonate, secondary alkyl sulfonate (C13 to 15), secondary alkyl sulfonate (C11 to 14), α-olefin sulfonate, and dioctyl sulfosuccinate.

[0040] These organic sulfonates (D) may be used alone or in combination of two or more. The lower limit of the content of the organic sulfonate (D) in the nonvolatile content of the treatment agent is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. When this content is 0.1% by mass or more, the antistatic properties of the elastic fiber to which the treatment agent is applied can be further improved. The upper limit of the content of the organic sulfonate (D) is preferably 10% by mass or less, more preferably 5% by mass or less. When this content is 10% by mass or less, the antistatic properties of the elastic fiber to which the treatment agent is applied can be efficiently improved. Note that ranges that combine the above upper and lower limits are also contemplated.

[0041] (Second embodiment) Next, a second embodiment of the elastic fiber according to the present invention will be described. The elastic fiber of this embodiment is an elastic fiber to which the treatment agent of the first embodiment is attached. There are no particular restrictions on the amount of the treatment agent of the first embodiment attached to the elastic fiber, but from the viewpoint of further improving the effects of the present invention, it is preferable that the amount of the treatment agent not including the solvent attached be 0.1% by mass or more and 10% by mass or less.

[0042] The elastic fiber is not particularly limited, but examples thereof include polyester elastic fiber, polyamide elastic fiber, polyolefin elastic fiber, polyurethane elastic fiber, etc. Among these, polyurethane elastic fiber is preferred, as the effects of the present invention can be more effectively exhibited.

[0043] The method for producing elastic fibers of this embodiment is obtained by oiling the treatment agent of the first embodiment to the elastic fibers. The method for oiling the treatment agent is preferably a neat oiling method without dilution, in which the agent is applied to the elastic fibers during the elastic fiber spinning process. Known methods for application, such as roller oiling, guide oiling, and spray oiling, can be used. An oiling roller is typically located between the spinneret and the take-up traverse, and can also be used in the production method of this embodiment. Among these, it is preferable to apply the treatment agent of the first embodiment to the elastic fibers, such as polyurethane-based elastic fibers, using an oiling roller located between the stretching rollers, as this produces a significant effect.

[0044] The method for producing the elastic fiber itself used in this embodiment is not particularly limited, and the fiber can be produced by a known method. Examples include wet spinning, melt spinning, dry spinning, etc. Among these, dry spinning is preferably used from the viewpoint of excellent quality of the elastic fiber and production efficiency.

[0045] (Effects of this embodiment) The effects of the treatment agent and elastic fiber of this embodiment will be described. (1) The treatment agent of this embodiment is composed of component (A) containing at least one selected from an antioxidant and a light stabilizer, and a silicone compound (B). Therefore, it is possible to reduce the fiber-to-metal friction of the elastic fiber to which the treatment agent is applied, and to improve the unwinding property. The present invention does not require the essential component of solid fine particles such as silica, which have been used in the past to prevent contact between elastic fibers and thereby suppress a decrease in unwinding property. By preventing the adhesion of elastic fibers with component (A), the present invention can improve the unwinding property without affecting the ability to reduce the fiber-to-metal friction of the elastic fiber.

[0046] (2) The yellowing resistance, antistatic properties, and package shape characteristics of the elastic fiber to which the treatment agent is applied can be improved. The oil stability of the treatment agent can also be improved. (3) When the treatment agent further contains at least one hydrocarbon oil (C) selected from mineral oil, isoparaffin, and polyalphaolefin, the shape characteristics of the package of the elastic fiber can be further improved.

[0047] (4) When the treating agent further contains an organic sulfonate (D), the antistatic properties of the elastic fiber to which the treating agent is applied can be further improved. (Example of change) The above embodiment may be modified as follows: The above embodiment and the following modifications may be combined with each other within the scope of technical compatibility.

[0048] The treatment agent of the above embodiment may further contain other ingredients used in conventional treatment agents, such as smoothing agents, higher alcohols, surfactants, antistatic agents, binders, and UV absorbers, to maintain and improve the quality of the treatment agent, as long as the effects of the present invention are not impaired. The content of these other ingredients in the treatment agent is preferably 40% by mass or less, and more preferably 15% by mass or less, from the perspective of efficiently exerting the effects of the present invention. [Example]

[0049] Examples will be given below to more specifically illustrate the configuration and effects of the present invention, but the present invention is not limited to these examples. In the following examples and comparative examples, parts means parts by mass, and % means % by mass.

[0050] Test Category 1 (Preparation of Treatment Agent) The treating agents used in each of the Examples and Comparative Examples were prepared using the components shown in Tables 1 and 2 according to the preparation method described below.

[0051] Example 1 Component (A) contained 0.05 parts (%) of Adekastab AO-20 (manufactured by ADEKA Corporation) (A-1) as a hindered phenol-based antioxidant, and polydimethylsiloxane (kinematic viscosity at 25°C 10 mm) as a silicone compound (B). 2 / s) (B-1) 58.95 parts (%), Pure Spin RC (kinematic viscosity at 30 ° C. 13.1 mm as hydrocarbon oil (C), 2 The treatment agent of Example 1 was prepared by thoroughly and homogeneously mixing 35 parts (%) of α-olefin sulfonic acid calcium salt having 14 carbon atoms (D-1) as an organic sulfonate (D), 5 parts (%) of α-olefin sulfonic acid calcium salt having 14 carbon atoms (D-1), and 1 part (%) of 2-hexyl-1-decanol (trade name ISOFOL16, manufactured by SASOL) (Z-3) as an additional component.

[0052] (Example 2 32,43,49,50,55~58,60, Reference example 33~42,44~48,51~54,59,61~65 , Comparative Examples 1 to 6) Example 2 32,43,49,50,55~58,60, Reference example 33~42,44~48,51~54,59,61~65 In Comparative Examples 1 to 6, the treatment agents were prepared in the same manner as in Example 1 by mixing component (A), silicone compound (B), hydrocarbon oil (C), organic sulfonate (D), and other components in the proportions shown in Tables 1 and 2.

[0053] The types of components (A), silicone compound (B), hydrocarbon oil (C), organic sulfonate (D), and other components in the treatment agent of each example, and the proportions of each component when the total content of each component is taken as 100%, are shown in the "Component (A)" column, the "Silicone compound (B)" column, the "Hydrocarbon oil (C)" column, the "Organic sulfonate (D)" column, and the "Other components" column in Tables 1 and 2, respectively.

[0054] [Table 1]

[0055] [Table 2] Details of the component (A), silicone compound (B), hydrocarbon oil (C), organic sulfonate (D), and other components listed in Tables 1 and 2 are as follows:

[0056] <Component (A): Antioxidant> (hindered phenol antioxidant) A-1: Adeka Stab AO-20 (ADEKA Corporation) A-2: Adeka Stab AO-50 (ADEKA Corporation) A-3: Adeka Stab AO-60 (ADEKA Corporation) A-4: Adeka Stab AO-80 (ADEKA Corporation) A-5: ADK STAB AO-330 (ADEKA Corporation) A-6: Cyanox 1790 (manufactured by Cytec) A-7: Irganox 1098 (BASF Japan) A-8: Irganox 3114 (BASF Japan) A-9: Irganox 1010 (BASF Japan) A-10: Irganox 1076 (BASF Japan) A-11: BHT (Fujifilm Wako Pure Chemical Industries, Ltd.) A-12: Sumilizer GA-80 (Sumitomo Chemical Co., Ltd.) A-13: Cheminox 179 (manufactured by Chemipro Chemicals) A-14: LOWINOX1790 (SI Group) (Other phenolic antioxidants) A-15: HOSTANOX O3 (Clariant Chemicals) A-16: Adeka Stab AO-30 (ADEKA Corporation) A-17: Adeka Stab AO-40 (ADEKA Corporation) A-18: Irganox 245 (BASF Japan) A-19:DRAGONOX-CA (manufactured by Guangzhou Bolong Chemical Co., Ltd.) A-20:DRAGONOX BMM (manufactured by Guangzhou Bolong Chemical Co., Ltd.) <Component (A): Light stabilizer> A-21: Adeka Stab LA-57 (ADEKA Corporation) A-22: ADK STAB LA-68 (ADEKA Corporation) A-23: ADK STAB LA-72 (ADEKA) A-24: ADK STAB LA-81 (ADEKA Corporation) A-25: Tinuvin 622SF (BASF) A-26: Tinuvin PA123 (BASF) A-27: Tinuvin 234 (BASF Japan) A-28: HN-150 (Japan Finechem Co., Ltd.) A-29: Chimassorb 944LD (BASF Japan) <Silicone Compound (B)> B-1: Polydimethylsiloxane (kinematic viscosity 10 mm at 25°C) 2 / s) B-2: Polydimethylsiloxane (kinematic viscosity 20 mm at 25°C) 2 / s) B-3: Kinematic viscosity at 25°C is 1000mm 2 / s, and the molar ratio of ethylene oxide to propylene oxide (ethylene oxide:propylene oxide) is 1:1. B-4: Kinematic viscosity at 25°C is 3500mm 2 / s, and the functional group equivalent is 2000 g / mol. B-5: Kinematic viscosity at 25°C is 2500mm 2 / s and a functional group equivalent of 3300 g / mol. <Hydrocarbon oil (C)> C-1: Pure Spin RC (kinematic viscosity at 30°C: 13.1 mm) 2 / s, manufactured by Cosmo Oil Lubricants Co., Ltd.) C-2: Diana Fresia W8 (kinematic viscosity at 30°C: 10.0 mm 2 / s, manufactured by Idemitsu Kosan) C-3: Ultra S2 (kinematic viscosity at 30°C: 11.0 mm 2 / s, manufactured by S-OIL) C-4: GS-310 (kinematic viscosity at 30°C: 8.3 mm 2 / s, Shell Chemicals) C-5: Ultra S3 (kinematic viscosity at 30°C 17.5mm 2 / s, manufactured by S-OIL) C-6: Diana Fresia W32 (kinematic viscosity at 30°C: 49.0 mm 2 / s, manufactured by Idemitsu Kosan) C-7: PAO 401 (kinematic viscosity at 30°C 26.2 mm 2 / s, manufactured by Nippon Steel Chemical & Material Co., Ltd.) C-8: PAO 601 (kinematic viscosity at 30°C: 46.7 mm 2 / s, manufactured by Nippon Steel Chemical & Material Co., Ltd.) C-9: Supersol LA41 (kinematic viscosity at 30°C: 5.7 mm) 2 / s, manufactured by Idemitsu Kosan) C-10: Diana Fresia W90 (kinematic viscosity at 30°C: 162.2 mmHg) 2 / s, manufactured by Idemitsu Kosan) <Organic sulfonate (D)> D-1: Calcium salt of α-olefin sulfonate with 14 carbon atoms D-2: Dodecylbenzenesulfonic acid magnesium salt D-3: Dioctyl sulfosuccinate sodium salt D-4: Potassium dodecylbenzenesulfonate D-5: Dioctyl sulfosuccinate phosphonium salt D-6: Ammonium α-olefin sulfonate with 14 carbon atoms D-7: Dodecylbenzenesulfonic acid triethanolamine salt <Other ingredients> Z-1: Lauryl oleate Z-2: A compound in which 5 moles of propylene oxide are added to 1 mole of isostearyl alcohol. Z-3: 2-hexyl-1-decanol (trade name ISOFOL16, manufactured by SASOL) Z-4: Ethylenediaminetetramethylenephosphonic acid Test Category 2 (Manufacturing of Elastic Fibers) A prepolymer obtained from polytetramethylene glycol (molecular weight 2000) and diphenylmethane diisocyanate was chain-extended with ethylenediamine in a dimethylacetamide solution to obtain a 30% spinning dope. This spinning dope was dry-spun from a spinneret in a heated gas stream. Then, neat oil was applied to the dry-spun polyurethane elastic fiber by roller oiling using an oiling roller located between the stretching rollers before winding.

[0057] The roller-oiled elastic fiber was wound onto a 58 mm long cylindrical paper tube at a winding speed of 600 m / min via a traverse guide that provided a winding width of 38 mm using a surface drive winder to obtain a 500 g package of 40 denier dry-spun polyurethane elastic fiber. The amount of treatment agent adhered was adjusted to 5% in all cases by adjusting the rotation speed of the oiling roller.

[0058] The roller-oiled dry-spun polyurethane elastic fiber packages thus obtained were evaluated for fiber-to-metal friction, unwinding properties, yellowing resistance, yarn shape, and antistatic properties. The oil stability of the treatment agent was also evaluated.

[0059] Test Category 3 (Evaluation of Elastic Fibers) (Evaluation of unwinding properties) The let-off section consisted of a first drive roller and a first free roller constantly in contact with it on one side. The winding section consisted of a second drive roller and a second free roller constantly in contact with it on the opposite side. The winding section was installed 20 cm horizontally away from the let-off section. A package of dry-spun polyurethane-based elastic fiber immediately after spinning was attached to the first drive roller, unwound to a spool thickness of 2 mm, and then wound onto the second drive roller. The let-off speed of the polyurethane-based elastic fiber from the first drive roller was fixed at 50 m / min. Meanwhile, the winding speed of the polyurethane-based elastic fiber onto the second drive roller was gradually increased from 50 m / min to forcibly unwind the polyurethane-based elastic fiber from the package. During this forced unwinding, the winding speed V (m / min) was measured at the point at which the polyurethane-based elastic fiber stopped dancing between the let-off section and the winding section. The unwinding property (%) was calculated using the following formula and evaluated according to the following criteria. The results are shown in the "Releasability" column of Tables 1 and 2.

[0060] Unwindability (%)=(V-50)×2 ·Releaseability evaluation criteria 4 (Excellent): Unwinding is less than 100% (no problems at all, stable unwinding possible) 3 (Good): Unwinding ability is 100% or more and less than 140% (there is almost no resistance to pulling out the yarn, no yarn breakage occurs, and stable unwinding is possible) 2 (Acceptable): When the unwinding property is 140% or more and less than 180% (there is some resistance when pulling out the thread, but the thread does not break and can be unwound stably) 1 (bad): Unwinding ability is 180% or more (there is resistance to pulling out the yarn, yarn breakage occurs, and there are problems with operation) (Evaluation of yellowing resistance) The b-value of the end surface of a package (500g roll) with each treatment applied was measured using a colorimeter (MINOLTA colorimeter: CR-300), and then the package was stored for one week while being irradiated with ultraviolet light using a UV irradiator. After this storage, the b-value of the same end surface measured before UV irradiation was measured again using the above colorimeter. The difference in b-value before and after one week of storage under UV light was taken as the measured value. Yellowing resistance was evaluated according to the following criteria. The results are shown in the "Yellowing resistance" column in Tables 1 and 2.

[0061] Evaluation criteria for yellowing resistance 4 (Excellent): The difference in b value is less than 0.4 3 (Good): The difference in b value is 0.4 or more and less than 0.6 2 (Acceptable): When the difference in b value is 0.6 or more and less than 1 1 (Not acceptable): If the difference in b value is 1 or more (Evaluation of fiber-metal friction) A friction measurement meter (Eiko Sokki Co., Ltd., Sample Friction Unit Model TB-1) was used. A chrome-plated, matte-finish pin with a diameter of 1 cm and a surface roughness of 2S was placed between two free rollers. Polyurethane elastic fibers were pulled out of the package (500 g roll) and passed through the chrome-plated, matte-finish pin so that the contact angle between the fibers was 90°. Under conditions of 25°C and 60% RH, an initial tension (T1) of 5 g was applied to the inlet side, and the fibers were run at a speed of 100 m / min. The secondary tension (T2) on the outlet side was measured. The coefficient of friction was calculated using the following formula and evaluated according to the following criteria. The results are shown in the "Fiber-Metal Friction" column in Tables 1 and 2.

[0062] Friction coefficient = (2 / 3.14) x ln(T2 / T1) Fiber-metal friction evaluation criteria 3 (Good): Friction coefficient less than 0.22 2 (Acceptable): Friction coefficient is 0.22 or more and less than 0.30 1 (bad): Friction coefficient is 0.30 or more (Evaluation of oil stability) Each treatment was left to stand at 25°C for 3 months, and the oil stability was evaluated according to the following criteria. The results are shown in the "Oil Stability" column of Tables 1 and 2.

[0063] Evaluation criteria for oil stability 3 (Good): No precipitation or separation, and the solution remains uniform as when prepared. 2 (Acceptable): A very small amount of precipitation occurs, but the solution returns to a homogeneous state similar to that at the time of preparation by stirring. 1 (Not acceptable): When precipitation or separation occurs and the solution does not return to a homogeneous state by stirring. (Evaluation of thread shape) The treatment agent prepared in Test Section 1 was applied to 40-denier dry-spun polyurethane elastic fiber at a rate of 7.0% using the roller oiling method. 500 g of the fiber was then wound onto a 57 mm-long cylindrical paper tube at a winding speed of 550 m / min via a traverse guide that provided a winding width of 42 mm using a surface-drive winder, yielding a polyurethane elastic fiber package. The maximum winding width (Wmax) and minimum winding width (Wmin) of this yarn package (500 g) were measured, and the bulge was calculated from the difference between the two (Wmax - Wmin) and evaluated according to the following criteria. The results are shown in the "Yarn Shape" column of Tables 1 and 2.

[0064] Evaluation criteria for yarn shape 5 (Excellent): When the bulge is less than 1 mm 4 (Excellent): When the bulge is 1mm or more and less than 2mm 3 (Good): Bulge is 2mm or more and less than 3mm 2 (Acceptable): When the bulge is 3mm or more and less than 6mm 1 (Not allowed): If the bulge is 6mm or more (Evaluation of antistatic properties) A chrome-plated, satin-finished pin with a diameter of 1 cm and a surface roughness of 2S was placed between two free rollers, with the polyurethane elastic fiber drawn from the yarn package at a contact angle of 90 degrees relative to the chrome-plated, satin-finished pin. An electrostatic potential meter (KSD-0103, manufactured by Kasuga Electric Co., Ltd.) was placed 1 cm below the chrome-plated, satin-finished pin. The yarn was unwound at 50 m / min and wound at 100 m / min under conditions of 25°C and 65% RH. The electricity generated was measured and evaluated according to the following criteria. The results are shown in the "Antistatic Properties" column in Tables 1 and 2.

[0065] Evaluation criteria for antistatic properties 4 (Excellent): When the generated electricity is less than 30 volts (no problems at all, stable operation possible) 3 (Good): When the generated electricity is 30 volts or more and less than 50 volts (there is a slight tendency for the warping process, but stable operation is possible without any problems) 2 (Acceptable): When the generated electricity is 50 volts or more and less than 100 volts (there may be some fluctuation during the warping process, but stable operation is possible without any problems) 1 (Not allowed): When the generated electricity is 100 volts or more (the yarns will get stuck together during the warping process, causing problems in operation) As is clear from the evaluation results of each Example and each Comparative Example in Tables 1 and 2, the treatment agent of the present invention can reduce fiber-to-metal friction of the elastic fiber to which the treatment agent is applied, and can also improve the unwinding properties, yellowing resistance, yarn shape, and antistatic properties. It can also improve the oil stability of the treatment agent.

Claims

1. A treatment agent for elastic fibers containing the following component (A) and a silicone compound (B): A treatment agent for elastic fibers, characterized in that the component (A) is contained in a proportion of 0.01 mass % or more and less than 1 mass % of the nonvolatile content of the treatment agent for elastic fibers. Component (A): At least one selected from an antioxidant and a light stabilizer.

2. 2. The treatment agent for elastic fibers according to claim 1, wherein the component (A) is contained in an amount of 0.01% by mass or more and less than 0.5% by mass based on the nonvolatile content of the treatment agent for elastic fibers.

3. 2. The agent for treating elastic fibers according to claim 1, wherein said component (A) is a phenolic antioxidant.

4. 4. The agent for treating elastic fibers according to claim 3, wherein said component (A) is a hindered phenol-based antioxidant.

5. 2. The treatment agent for elastic fibers according to claim 1, wherein the silicone compound (B) is contained in a proportion of 20% by mass or more and 65% by mass or less in the nonvolatile content of the treatment agent for elastic fibers.

6. 2. The treatment agent for elastic fibers according to claim 1, further comprising the following hydrocarbon oil (C): Hydrocarbon oil (C): At least one selected from mineral oil, isoparaffin, and polyalphaolefin.

7. The treatment agent for elastic fibers according to claim 6, wherein the hydrocarbon oil (C) is contained in a proportion of 35% by mass or more and 79.49% by mass or less of the non-volatile components of the treatment agent for elastic fibers.

8. The hydrocarbon oil (C) has a kinematic viscosity of 5 mm at 30°C. ２ / s or more 50mm ２ The treatment agent for elastic fibers according to claim 6, wherein the viscosity is 1 / s or less.

9. The treatment agent for elastic fibers according to claim 1, further comprising an organic sulfonate (D).

10. The treatment agent for elastic fibers according to claim 9, wherein the organic sulfonate (D) is contained in a proportion of 0.5% by mass or more and 5% by mass or less in the nonvolatile content of the treatment agent for elastic fibers.

11. An elastic fiber having the treating agent for elastic fibers according to any one of claims 1 to 10 attached thereto.

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