JP7807616B2 - Treatment agent for elastic fibers, and elastic fibers - Google Patents

Treatment agent for elastic fibers, and elastic fibers

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JP7807616B2
JP7807616B2 JP2022081955A JP2022081955A JP7807616B2 JP 7807616 B2 JP7807616 B2 JP 7807616B2 JP 2022081955 A JP2022081955 A JP 2022081955A JP 2022081955 A JP2022081955 A JP 2022081955A JP 7807616 B2 JP7807616 B2 JP 7807616B2
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elastic fibers
treatment agent
dimethyl silicone
silicone
present
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JP2023170301A (en
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康平 小田
美弥子 原田
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Takemoto Oil and Fat Co Ltd
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Takemoto Oil and Fat Co Ltd
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Priority to JP2022081955A priority Critical patent/JP7807616B2/en
Priority to PCT/JP2023/007805 priority patent/WO2023223626A1/en
Priority to CN202380028311.6A priority patent/CN118891411A/en
Publication of JP2023170301A publication Critical patent/JP2023170301A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • D06M13/03Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons with unsaturated hydrocarbons, e.g. alkenes, or alkynes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144Alcohols; Metal alcoholates
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Description

本発明は、特定の動粘度を有するジメチルシリコーン2種類を含有する弾性繊維用処理剤及びかかる弾性繊維用処理剤が付着している弾性繊維に関する。 The present invention relates to a treatment agent for elastic fibers containing two types of dimethyl silicones with specific kinematic viscosities, and to elastic fibers to which such a treatment agent for elastic fibers is attached.

ポリウレタン系弾性繊維等の弾性繊維は、他の合成繊維に比べて、繊維間の粘着性が強いため、弾性繊維を紡糸し、パッケージに巻き取った後、該パッケージから引き出して加工工程に供する際、パッケージから安定して解舒することが難しいだけでなく、紡糸した弾性繊維の形状保持性が低いと、パッケージの巻き糸が崩れるという問題があった。
また、弾性繊維用処理剤の均一付着性が不足すると、糸切れや張力斑が発生する他、弾性繊維用処理剤の保存安定性の課題もあった。
これらの問題を解決するために、弾性繊維の平滑性を向上させる炭化水素油等の平滑剤を含有する弾性繊維用処理剤が提案されている。例えば、ベース成分、HLBが3~15のノニオン界面活性剤を0.01~30質量%含有する弾性繊維用処理剤(特許文献1)、ベース成分と、水、炭素数1~15の炭化水素基を有する低級アルコール、又は該低級アルコールのアルキレンオキサイド付加物を0.1~20質量%、乳化剤を0.1~30質量%含有する弾性繊維用処理剤(特許文献2)、ポリオキシエチレン骨格の含有量が分子中に20~80質量%であるポリオキシアルキレンエーテル変性ポリシロキサンを含有する弾性繊維用油剤(特許文献3)などであるが、上記の問題を全て解決する弾性繊維用油剤は、未だ提案されていない。
Elastic fibers such as polyurethane-based elastic fibers have stronger interfiber adhesion than other synthetic fibers. Therefore, when the elastic fibers are spun, wound onto a package, and then pulled out from the package for processing, it is difficult to stably unwind them from the package. Furthermore, if the spun elastic fibers have poor shape retention, the wound yarn around the package may collapse.
Furthermore, if the uniform adhesion of the treatment agent for elastic fibers is insufficient, thread breakage and uneven tension may occur, and there is also the problem of storage stability of the treatment agent for elastic fibers.
To solve these problems, treatments for elastic fibers containing a smoothing agent such as a hydrocarbon oil that improves the smoothness of the elastic fibers have been proposed. Examples include a treatment for elastic fibers containing a base component and 0.01 to 30 mass% of a nonionic surfactant having an HLB of 3 to 15 (Patent Document 1), a treatment for elastic fibers containing a base component, water, 0.1 to 20 mass% of a lower alcohol having a hydrocarbon group with 1 to 15 carbon atoms or an alkylene oxide adduct of the lower alcohol, and 0.1 to 30 mass% of an emulsifier (Patent Document 2), and an oil for elastic fibers containing a polyoxyalkylene ether-modified polysiloxane having a polyoxyethylene skeleton content of 20 to 80 mass% in the molecule (Patent Document 3). However, no oil for elastic fibers that solves all of the above problems has yet been proposed.

特開2007-100291号公報Japanese Patent Application Laid-Open No. 2007-100291 特開2003-147675号公報Japanese Patent Application Laid-Open No. 2003-147675 特開平09-268477号公報Japanese Patent Application Publication No. 09-268477

本発明は、保存安定性に優れ、弾性繊維上での均一付着性及び、紡糸時の形状保持性が良好であり、弾性繊維を長期間保管した際の解舒性に優れた弾性繊維用処理剤及びかかる弾性繊維用処理剤が付着している弾性繊維を提供することを課題としている。 The objective of the present invention is to provide a treatment agent for elastic fibers that has excellent storage stability, uniform adhesion to elastic fibers, good shape retention during spinning, and excellent unwinding properties when the elastic fibers are stored for long periods of time, as well as elastic fibers to which such a treatment agent is attached.

本発明者は上記課題を解決するために鋭意研究を重ねた結果、特定の動粘度を有するジメチルシリコーンを2種類併用し、これらを含有するシリコーン成分を特定量含有することにより、保存安定性、弾性繊維上での均一付着性、紡糸時の形状保持性及び、弾性繊維を長期間保管した際の解舒性全てに優れた弾性繊維用処理剤とし得ることを見出し、上記課題を解決するに至ったものである。 As a result of extensive research into solving the above-mentioned problems, the inventors discovered that by combining two types of dimethyl silicones with specific kinematic viscosities and incorporating specific amounts of silicone components containing these, it is possible to create a treatment agent for elastic fibers that is excellent in all aspects: storage stability, uniform adhesion to elastic fibers, shape retention during spinning, and unwinding properties when the elastic fibers are stored for long periods of time, thereby solving the above-mentioned problems.

本発明は、具体的には次の事項を要旨とする。
1.鉱物油(A)と、下記のジメチルシリコーン(B1)、及び下記のジメチルシリコーン(B2)を含むシリコーン成分(B)と、を含有し、処理剤の全質量に対して、前記シリコーン成分(B)を1~35質量%の範囲で含有することを特徴とする弾性繊維用処理剤。
ジメチルシリコーン(B1):25℃における動粘度が12mm/s以下であるジメチルシリコーン。
ジメチルシリコーン(B2):25℃における動粘度が90mm/s以上であるジメチルシリコーン。
2.処理剤の全質量に対して、前記シリコーン成分(B)を10~35質量%の範囲で含有する1.に記載の弾性繊維用処理剤。
3.前記ジメチルシリコーン(B1)、及び前記ジメチルシリコーン(B2)の質量比が、ジメチルシリコーン(B1)/ジメチルシリコーン(B2)=97.5/2.5~25.0/75.0である1.に記載の弾性繊維用処理剤。
4.前記鉱物油(A)が、30℃における動粘度が10mm/s以下である鉱物油を含む1.に記載の弾性繊維用処理剤。
5.シリコーン成分(B)が、更にシリコーンレジン(B3)を含有する1.に記載の弾性繊維用処理剤。
6.更に、ゲルベアルコール(C)を含有する1.に記載の弾性繊維用処理剤。
7.1.~6.のいずれか一項に記載の弾性繊維用処理剤が付着していることを特徴とする弾性繊維。
Specifically, the present invention provides the following:
1. A treatment agent for elastic fibers, comprising a mineral oil (A) and a silicone component (B) containing the following dimethyl silicone (B1) and the following dimethyl silicone (B2), wherein the silicone component (B) is contained in an amount of 1 to 35% by mass based on the total mass of the treatment agent.
Dimethyl silicone (B1): Dimethyl silicone having a kinematic viscosity at 25°C of 12 mm 2 /s or less.
Dimethyl silicone (B2): Dimethyl silicone having a kinematic viscosity at 25°C of 90 mm 2 /s or more.
2. The treatment agent for elastic fibers according to 1., which contains the silicone component (B) in an amount of 10 to 35% by mass based on the total mass of the treatment agent.
3. The treatment agent for elastic fibers according to 1., wherein the mass ratio of the dimethyl silicone (B1) to the dimethyl silicone (B2) is dimethyl silicone (B1)/dimethyl silicone (B2)=97.5/2.5 to 25.0/75.0.
4. The treatment agent for elastic fibers according to 1., wherein the mineral oil (A) contains a mineral oil having a kinematic viscosity at 30°C of 10 mm 2 /s or less.
5. The treatment agent for elastic fibers according to 1., wherein the silicone component (B) further contains a silicone resin (B3).
6. The treatment agent for elastic fibers according to 1., further comprising a Guerbet alcohol (C).
7. An elastic fiber having the treating agent for elastic fibers according to any one of 1. to 6. adhered thereto.

本発明の弾性繊維用処理剤は保存安定性に優れているため、弾性繊維用処理剤の運搬や保管の際に分離や沈殿が生じることが無く有用である。
また、本発明の弾性繊維用処理剤は、弾性繊維上での均一付着性に優れており、糸切れや張力斑が発生することが無い。
さらに、本発明の弾性繊維用処理剤は、紡糸時の形状保持性に優れているため、パッケージに巻き取った後の巻き糸が崩れることが無く、さらに、パッケージを長期間保管した際の解舒性にも優れている。
本発明の弾性繊維用処理剤は、保存安定性、弾性繊維上での均一付着性、紡糸時の形状保持性及び、解舒性全てにおいて優れており、非常に有用である。
The treatment agent for elastic fibers of the present invention has excellent storage stability, and is therefore useful because separation or precipitation does not occur during transportation or storage of the treatment agent for elastic fibers.
Furthermore, the treating agent for elastic fibers of the present invention has excellent uniformity of adhesion to elastic fibers, and does not cause thread breakage or uneven tension.
Furthermore, the treatment agent for elastic fibers of the present invention has excellent shape retention properties during spinning, so the wound yarn does not collapse after being wound into a package, and the package also has excellent unwinding properties when stored for a long period of time.
The treating agent for elastic fibers of the present invention is excellent in all respects: storage stability, uniform adhesion to elastic fibers, shape retention during spinning, and unwinding properties, making it extremely useful.

<鉱物油(A)>
本発明の弾性繊維用処理剤は、鉱物油(A)を含有するものである。
鉱物油(A)としては、例えば芳香族系炭化水素、パラフィン系炭化水素、ナフテン系炭化水素等が挙げられる。より具体的には、例えば、スピンドル油、流動パラフィン等が挙げられる。これらの鉱物油は、粘度等によって規定される市販品1種以上を適宜採用してもよい。
本発明の鉱物油(A)は、30℃における動粘度が10mm/s以下のものが好ましい。この態様により、本発明の弾性繊維用処理剤の紡糸時の形状保持性をより向上させることができるので有利である。本発明の弾性繊維用処理剤は、30℃における動粘度が10mm/s以下の鉱物油と、それ以外の鉱物油を併用しても良い。
本発明の弾性繊維用処理剤は、処理剤の全質量に対して、鉱物油(A)を40~95質量%の範囲で含有することが好ましく、50~93質量%の範囲で含有することがより好ましく、60~88質量%の範囲で含有することがさらに好ましい。
なお、本発明における、30℃における動粘度は、キャノンフェンスケ粘度計を用いて測定される数値を意味する。
<Mineral oil (A)>
The treating agent for elastic fibers of the present invention contains a mineral oil (A).
Examples of the mineral oil (A) include aromatic hydrocarbons, paraffinic hydrocarbons, naphthenic hydrocarbons, etc. More specifically, examples include spindle oil, liquid paraffin, etc. As these mineral oils, one or more commercially available products specified by viscosity, etc. may be appropriately used.
The mineral oil (A) of the present invention preferably has a kinematic viscosity of 10 mm 2 /s or less at 30° C. This embodiment is advantageous because it can further improve the shape retention of the treatment agent for elastic fibers of the present invention during spinning. The treatment agent for elastic fibers of the present invention may use a mineral oil having a kinematic viscosity of 10 mm 2 /s or less at 30° C. in combination with other mineral oils.
The treatment agent for elastic fibers of the present invention preferably contains mineral oil (A) in the range of 40 to 95 mass %, more preferably 50 to 93 mass %, and even more preferably 60 to 88 mass %, based on the total mass of the treatment agent.
In the present invention, the kinematic viscosity at 30° C. means a value measured using a Cannon-Fenske viscometer.

<ジメチルシリコーン(B1)>
本発明の弾性繊維用処理剤は、25℃における動粘度が12mm/s以下であるジメチルシリコーン(B1)を含有するものである。ジメチルシリコーン(B1)は、動粘度が12mm/s以下のものを2種以上併用してもよい。
ジメチルシリコーン(B1)の動粘度は、11mm/s以下であることが好ましく、10mm/s以下であることがより好ましい。また、ジメチルシリコーン(B1)の動粘度の下限値は、特に制限されないが、1mm/s以上であることが好ましく、2mm/s以上であることがより好ましく、5mm/s以上であることがさらに好ましい。 本発明の弾性繊維用処理剤は、ジメチルシリコーン(B1)を処理剤の全質量に対して、1~34質量%の範囲で含有することが好ましく、2~34質量%の範囲で含有することがより好ましく、2.5~34質量%の範囲で含有することがさらに好ましい。
<Dimethyl silicone (B1)>
The treating agent for elastic fibers of the present invention contains a dimethyl silicone (B1) having a kinematic viscosity of 12 mm 2 /s or less at 25° C. Two or more types of dimethyl silicone (B1) having a kinematic viscosity of 12 mm 2 /s or less may be used in combination.
The kinematic viscosity of the dimethyl silicone (B1) is preferably 11 mm 2 /s or less, and more preferably 10 mm 2 /s or less. The lower limit of the kinematic viscosity of the dimethyl silicone (B1) is not particularly limited, but is preferably 1 mm 2 /s or more, more preferably 2 mm 2 /s or more, and even more preferably 5 mm 2 /s or more. The treating agent for elastic fibers of the present invention preferably contains dimethyl silicone (B1) in the range of 1 to 34 mass%, more preferably 2 to 34 mass%, and even more preferably 2.5 to 34 mass%, based on the total mass of the treating agent.

<ジメチルシリコーン(B2)>
本発明の弾性繊維用処理剤は、25℃における動粘度が90mm/s以上であるジメチルシリコーン(B2)を含有するものである。ジメチルシリコーン(B2)は、動粘度が90mm/s以上のものを2種以上併用してもよい。
ジメチルシリコーン(B2)の動粘度の上限値は、特に制限されないが、100000mm/s以下であることが好ましく、50000mm/s以下であることがより好ましく、10000mm/s以下であることがさらに好ましい。
本発明の弾性繊維用処理剤は、ジメチルシリコーン(B2)を処理剤の全質量に対して、0.05~33質量%の範囲で含有することが好ましく、0.1~30質量%の範囲で含有することがより好ましく、0.1~27質量%の範囲で含有することがさらに好ましい。
<Dimethyl silicone (B2)>
The treatment agent for elastic fibers of the present invention contains a dimethyl silicone (B2) having a kinematic viscosity of 90 mm 2 /s or more at 25° C. Two or more types of dimethyl silicone (B2) having a kinematic viscosity of 90 mm 2 /s or more may be used in combination.
There is no particular upper limit to the kinematic viscosity of the dimethyl silicone (B2), but it is preferably 100,000 mm 2 /s or less, more preferably 50,000 mm 2 /s or less, and even more preferably 10,000 mm 2 /s or less.
The treating agent for elastic fibers of the present invention preferably contains dimethyl silicone (B2) in the range of 0.05 to 33 mass %, more preferably 0.1 to 30 mass %, and even more preferably 0.1 to 27 mass %, based on the total mass of the treating agent.

<シリコーン成分(B)>
本発明の弾性繊維用処理剤は、上記ジメチルシリコーン(B1)と上記ジメチルシリコーン(B2)を含有するシリコーン成分(B)を、処理剤の全質量に対して1~35質量%の範囲で含有するものである。
本発明の弾性繊維用処理剤は、上記鉱物油(A)とこのシリコーン成分(B)を含有することにより、処理剤自体の保存安定性に優れるのみならず、弾性繊維上での均一付着性、紡糸時の形状保持性及び、パッケージを長期間保管した際の解舒性に優れているという、非常に優れた効果を発揮するものである。
本発明の弾性繊維用処理剤は、上記鉱物油(A)とシリコーン成分(B)を、処理剤の全質量に対して75~100質量%の範囲で含有することが好ましく、85~100質量%の範囲で含有することがより好ましく、92~100質量%の範囲で含有することがさらに好ましい。
本発明の弾性繊維用処理剤は、シリコーン成分(B)を、処理剤の全質量に対して10~35質量%の範囲で含有することが好ましい。この態様により、本発明の弾性繊維用処理剤の弾性繊維上での均一付着性をより向上させることができるので有利である。
本発明におけるシリコーン成分(B)中の、上記ジメチルシリコーン(B1)と上記ジメチルシリコーン(B2)の割合は、その質量比が、ジメチルシリコーン(B1)/ジメチルシリコーン(B2)=97.5/2.5~25.0/75.0であることが好ましい。この態様により、本発明の弾性繊維用処理剤の保存安定性、紡糸時の形状保持性、解舒性及び弾性繊維上での均一付着性全てを、より向上させることができるので有利である。
上記ジメチルシリコーン(B1)と上記ジメチルシリコーン(B2)の割合は、その質量比が、ジメチルシリコーン(B1)/ジメチルシリコーン(B2)=97.5/2.5~25.5/74.5であることがより好ましく、97.1/2.9~26.5/73.5であることがさらに好ましい。
<Silicone Component (B)>
The treatment agent for elastic fibers of the present invention contains the silicone component (B) containing the above dimethyl silicone (B1) and the above dimethyl silicone (B2) in an amount of 1 to 35% by mass, based on the total mass of the treatment agent.
The treatment agent for elastic fibers of the present invention contains the mineral oil (A) and the silicone component (B) and therefore not only has excellent storage stability, but also exhibits extremely excellent effects such as uniform adhesion to elastic fibers, excellent shape retention during spinning, and excellent unwinding properties when the package is stored for a long period of time.
The treatment agent for elastic fibers of the present invention preferably contains the mineral oil (A) and the silicone component (B) in a range of 75 to 100 mass %, more preferably 85 to 100 mass %, and even more preferably 92 to 100 mass %, based on the total mass of the treatment agent.
The treatment agent for elastic fibers of the present invention preferably contains the silicone component (B) in an amount of 10 to 35% by mass, based on the total mass of the treatment agent. This embodiment is advantageous because it can further improve the uniform adhesion of the treatment agent for elastic fibers of the present invention to the elastic fibers.
In the silicone component (B) of the present invention, the mass ratio of the dimethyl silicone (B1) to the dimethyl silicone (B2) is preferably dimethyl silicone (B1)/dimethyl silicone (B2) = 97.5/2.5 to 25.0/75.0, which is advantageous because it can further improve the storage stability of the treatment agent for elastic fibers of the present invention, shape retention during spinning, unwinding properties, and uniform adhesion on elastic fibers.
The mass ratio of the dimethyl silicone (B1) to the dimethyl silicone (B2) is more preferably dimethyl silicone (B1)/dimethyl silicone (B2)=97.5/2.5 to 25.5/74.5, and even more preferably 97.1/2.9 to 26.5/73.5.

本発明におけるシリコーン成分(B)は、上記ジメチルシリコーン(B1)や上記ジメチルシリコーン(B2)以外に、シリコーンレジン(B3)を含有することが好ましい。この態様により、本発明の弾性繊維用処理剤の解舒性をより向上させることができるので有利である。シリコーンレジン(B3)は、処理剤の全質量に対して0~3質量%の範囲で含有することが好ましい。
シリコーンレジン(B3)としては、その種類に特に制限はないが、MQシリコーンレジン、MDQシリコーンレジン、Tシリコーンレジン及びMTQシリコーンレジンから選ばれるものが好ましく、MQシリコーンレジン、MDQシリコーンレジン及びMTQシリコーンレジンから選ばれるものがより好ましい。なかでも、シリコーンレジンとして、MQシリコーンレジン、MDQシリコーンレジン及びMTQシリコーンレジンから選ばれるものを用いる場合、M/Q比が0.5~1.1であるものを用いるのが特に好ましい。尚、シリコーンレジンに冠したM、D、T、Qはシリコーンレジンを構成するシロキサン単位の表記方法として一般的に使用されているもので、Mは一般式がRSiO1/2で示される1官能性シロキサン単位、Dは一般式がRSiO2/2で示される2官能性シロキサン単位、Tは一般式がRSiO3/2で示される3官能性シロキサン単位、Qは一般式がSiO4/2で示される4官能性シロキサン単位である。ここで、R~Rは炭素数1~24の炭化水素基、一般式が-RNHRNH(R及びRは炭素数2又は3の炭化水素基)や-RNH(Rは炭素数2又は3の炭化水素基)等で示される有機アミノ基、ビニル基、カルビノール基等である。
In the present invention, the silicone component (B) preferably contains a silicone resin (B3) in addition to the dimethyl silicone (B1) and the dimethyl silicone (B2). This embodiment is advantageous because it can further improve the unwinding properties of the treatment agent for elastic fibers of the present invention. The silicone resin (B3) is preferably contained in an amount of 0 to 3 mass % based on the total mass of the treatment agent.
The silicone resin (B3) is not particularly limited in type, but is preferably selected from MQ silicone resins, MDQ silicone resins, T silicone resins, and MTQ silicone resins, and more preferably selected from MQ silicone resins, MDQ silicone resins, and MTQ silicone resins. Among these, when a silicone resin selected from MQ silicone resins, MDQ silicone resins, and MTQ silicone resins is used, it is particularly preferred to use one having an M/Q ratio of 0.5 to 1.1. The letters M, D, T, and Q attached to silicone resin are commonly used to denote the siloxane units that make up the silicone resin, where M is a monofunctional siloxane unit represented by the general formula R1R2R3SiO1/2 , D is a difunctional siloxane unit represented by the general formula R4R5SiO2 /2 , T is a trifunctional siloxane unit represented by the general formula R6SiO3 /2 , and Q is a tetrafunctional siloxane unit represented by the general formula SiO4 /2 . Here, R1 to R6 are hydrocarbon groups having 1 to 24 carbon atoms, organic amino groups represented by the general formula -R7NHR8NH2 ( R7 and R8 are hydrocarbon groups having 2 or 3 carbon atoms) or -R9NH2 ( R9 is a hydrocarbon group having 2 or 3 carbon atoms), vinyl groups, carbinol groups , etc.

本発明におけるシリコーン成分(B)は、上記ジメチルシリコーン(B1)、(B2)及びシリコーンレジン(B3)以外に、動粘度が12mm/sより大きく90mm/sより小さいジメチルシリコーンのほか、フェニル変性シリコーン、アミノ変性シリコーン、アミド変性シリコーン、ポリエーテル変性シリコーン、アミノポリエーテル変性シリコーン、アルキル変性シリコーン、アルキルアラルキル変性シリコーン、アルキルポリエーテル変性シリコーン、エステル変性シリコーン、エポキシ変性シリコーン、カルビノール変性シリコーン、メルカプト変性シリコーン、ポリオキシアルキレン変性シリコーン等の有機変性シリコーンを含有してもよい。 In addition to the above-mentioned dimethyl silicones (B1), (B2) and silicone resin (B3), the silicone component (B) in the present invention may contain, in addition to dimethyl silicones having a kinematic viscosity of more than 12 mm 2 /s and less than 90 mm 2 /s, organo-modified silicones such as phenyl-modified silicones, amino-modified silicones, amide-modified silicones, polyether-modified silicones, aminopolyether-modified silicones, alkyl-modified silicones, alkylaralkyl-modified silicones, alkylpolyether-modified silicones, ester-modified silicones, epoxy-modified silicones, carbinol-modified silicones, mercapto-modified silicones and polyoxyalkylene-modified silicones.

<ゲルベアルコール(C)>
本発明の弾性繊維用処理剤は、アルキル鎖のβ位に分岐鎖を有する1価脂肪族アルコールであるゲルベアルコール(C)を含有することが好ましい。この態様により、本発明の弾性繊維用処理剤の保存安定性をより向上させることができるので有利である。
ゲルベアルコール(C)の具体例としては、例えば2-エチル-1-プロパノール、2-エチル-1-ブタノール、2-エチル-1-ヘキサノール、2-エチル-1-オクタノール、2-エチル-デカノール、2-ブチル-1-ヘキサノール、2-ブチル-1-オクタノール、2-ブチル-1-デカノール、2-ヘキシル-1-オクタノール、2-ヘキシル-1-デカノール、2-オクチル-1-デカノール、2-オクチル-1-ドデカノール、2-ヘキシル-1-オクタノール、2-ヘキシル-1-ドデカノール、2-(1,3,3-トリメチルブチル)-5,7,7-トリメチル-1-オクタノール、2-(4-メチルヘキシル)-8-メチル-1-デカノール、2-(1,5-ジメチルヘキシル)-5,9-ジメチル-1-デカノール等が挙げられる。
ゲルベアルコール(C)としては、炭素数6~24のゲルベアルコールが好ましく、炭素数12~24のゲルベアルコールがより好ましい。
<Guerbet Alcohol (C)>
The treatment agent for elastic fibers of the present invention preferably contains a Guerbet alcohol (C), which is a monohydric aliphatic alcohol having a branched chain at the β-position of the alkyl chain. This embodiment is advantageous because it can further improve the storage stability of the treatment agent for elastic fibers of the present invention.
Specific examples of the Guerbet alcohol (C) include 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-octanol, 2-hexyl-1-dodecanol, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyl-1-octanol, 2-(4-methylhexyl)-8-methyl-1-decanol, and 2-(1,5-dimethylhexyl)-5,9-dimethyl-1-decanol.
As the Guerbet alcohol (C), a Guerbet alcohol having 6 to 24 carbon atoms is preferred, and a Guerbet alcohol having 12 to 24 carbon atoms is more preferred.

<その他の成分(D)>
本発明の弾性繊維用処理剤は、その他の成分(D)として、例えば、脂肪酸とアルコールとから製造されるエステル油や、制電剤、消泡剤、酸化防止剤、防腐剤、防錆剤等を併用することができる。その他の成分(D)の併用量は、本発明の効果を損なわない範囲内において規定することができる。
<Other Components (D)>
The treating agent for elastic fibers of the present invention can be used in combination with other components (D), such as ester oils produced from fatty acids and alcohols, antistatic agents, antifoaming agents, antioxidants, preservatives, rust inhibitors, etc. The amount of other components (D) used in combination can be specified within a range that does not impair the effects of the present invention.

本発明の弾性繊維用処理剤は、上記構成により保存安定性に優れ、弾性繊維上での均一付着性及び、紡糸時の形状保持性が良好であり、弾性繊維を長期間保管した際の解舒性の全てにおいて優れた効果を発揮するものである。
本発明の弾性繊維用処理剤は、ジメチルシリコーン(B1)を必須成分とする構成により、弾性繊維に対する弾性繊維用処理剤の濡れ性を向上させて、より均一に処理剤が付着するものと考察している。
また、本発明の弾性繊維用処理剤は、ジメチルシリコーン(B2)を必須成分とする構成に加えて、鉱物油(A)を必須成分として、シリコーン成分(B)を処理剤の全質量に対して1~35質量%の範囲を含有することにより、弾性繊維同士の糸滑りを抑制し、巻き糸の形状保持性を良化させているものと考察している。
さらに、本発明の弾性繊維用処理剤は、ジメチルシリコーン(B2)を必須成分とする構成により、ジメチルシリコーン(B2)が、弾性繊維上で強固な油膜を形成し、糸同士の膠着を抑制して、弾性繊維を長期間保管した際の解舒性を良好なものとしていると考えている。
本発明の弾性繊維用処理剤は、ジメチルシリコーン(B1)とジメチルシリコーン(B2)を必須成分とする構成により、低温(5℃)における保管時の安定性を向上させるものと考えている。
Due to the above-mentioned constitution, the treatment agent for elastic fibers of the present invention has excellent storage stability, uniform adhesion to elastic fibers, and good shape retention during spinning, and exhibits excellent effects in all aspects of unwinding properties when the elastic fibers are stored for long periods of time.
It is believed that the treatment agent for elastic fibers of the present invention, which contains dimethyl silicone (B1) as an essential component, improves the wettability of the treatment agent for elastic fibers to elastic fibers, resulting in more uniform adhesion of the treatment agent.
Furthermore, the treatment agent for elastic fibers of the present invention contains, in addition to a constitution in which dimethyl silicone (B2) is an essential component, mineral oil (A) as an essential component, and silicone component (B) in an amount ranging from 1 to 35 mass % based on the total mass of the treatment agent, which is thought to suppress yarn slippage between elastic fibers and improve the shape retention of wound yarns.
Furthermore, since the treatment agent for elastic fibers of the present invention contains dimethyl silicone (B2) as an essential component, it is believed that the dimethyl silicone (B2) forms a strong oil film on the elastic fibers, suppressing adhesion between the fibers and improving the unwinding properties of the elastic fibers when stored for long periods of time.
The treating agent for elastic fibers of the present invention is thought to have improved stability during storage at low temperatures (5° C.) due to its constitution containing dimethyl silicone (B1) and dimethyl silicone (B2) as essential components.

<弾性繊維>
本発明の弾性繊維用処理剤を付着させる弾性繊維の具体例としては、特に制限はないが、例えばポリエステル系弾性繊維、ポリアミド系弾性繊維、ポリオレフィン系弾性繊維、ポリウレタン系弾性繊維等が挙げられる。これらの中でもポリウレタン系弾性繊維が好ましい。かかる場合に本発明の効果の発現をより高くすることができる。
本発明の弾性繊維用処理剤の弾性繊維に対する付着量は、特に制限はないが、本発明の効果をより向上させる観点から0.1質量%以上10質量%以下の範囲で付着させることが好ましい。
<Elastic fiber>
Specific examples of elastic fibers to which the treatment agent for elastic fibers of the present invention is applied include, but are not limited to, polyester-based elastic fibers, polyamide-based elastic fibers, polyolefin-based elastic fibers, polyurethane-based elastic fibers, etc. Among these, polyurethane-based elastic fibers are preferred. In such cases, the effects of the present invention can be more effectively achieved.
The amount of the treatment agent for elastic fibers of the present invention to be applied to the elastic fibers is not particularly limited, but from the viewpoint of further improving the effects of the present invention, it is preferably applied in the range of 0.1% by mass to 10% by mass.

本発明における弾性繊維の製造方法は、本発明の弾性繊維用処理剤を弾性繊維に給油することにより得られる。処理剤の給油方法としては、希釈することなくニート給油法により、弾性繊維の紡糸工程において弾性繊維に付着させる方法が好ましい。付着方法としては、例えばローラー給油法、ガイド給油法、スプレー給油法等の公知の方法が適用できる。給油ローラーは、通常口金から巻き取りトラバースまでの間に位置させることが一般的であり、本発明の製造方法にも適用できる。これらの中でも、延伸ローラーと延伸ローラーの間に位置する給油ローラーにて本発明の弾性繊維用処理剤を弾性繊維、例えばポリウレタン系弾性繊維に付着させることが、本発明の効果を顕著に発現させるために好ましい。
本発明に用いる弾性繊維自体の製造方法は、特に限定されず、公知の方法で製造が可能である。例えば湿式紡糸法、溶融紡糸法、乾式紡糸法等が挙げられる。これらの中でも、弾性繊維の品質及び製造効率が優れる観点から乾式紡糸法が好ましく適用される。
The method for producing elastic fibers of the present invention is achieved by oiling elastic fibers with the treatment agent for elastic fibers of the present invention. 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 positioned between the spinneret and the take-up traverse, and this method can also be used in the production method of the present invention. Among these, it is preferable to apply the treatment agent for elastic fibers of the present invention to elastic fibers, such as polyurethane-based elastic fibers, using an oiling roller positioned between stretching rollers, in order to significantly exhibit the effects of the present invention.
The method for producing the elastic fiber itself used in the present invention is not particularly limited, and it 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.

以下、実施例を挙げて本発明を説明するが、本発明の技術範囲はこれらにより限定されるものではない。なお、以下の実施例及び比較例において、部は質量部を、また%は質量%を意味する。 The present invention will be explained below using examples, but the technical scope of the present invention is not limited to these examples. In the following examples and comparative examples, parts mean parts by mass, and % means % by mass.

<実施例1~24、比較例1~11の弾性繊維用処理剤>
実施例1~24の弾性繊維用処理剤は下記表1に、比較例1~11の弾性繊維用処理剤は下記表2に、それぞれ示された組成に基づいて、各成分をよく混合して均一にすることで各弾性繊維用処理剤を調製した。
<Treatment agents for elastic fibers of Examples 1 to 24 and Comparative Examples 1 to 11>
The elastic fiber treatment agents of Examples 1 to 24 are shown in Table 1 below, and the elastic fiber treatment agents of Comparative Examples 1 to 11 are shown in Table 2 below. Each elastic fiber treatment agent was prepared by thoroughly mixing the components to make them uniform based on the composition shown in each example.

表1に記載した各成分の詳細は以下のとおりである。
<鉱物油(A)>
A-1:動粘度4.4mm/s(30℃)の鉱物油
A-2:動粘度9.0mm/s(30℃)の鉱物油
A-3:動粘度9.4mm/s(30℃)の鉱物油
A-4:動粘度9.8mm/s(30℃)の鉱物油
A-5:動粘度11.4mm/s(30℃)の鉱物油
A-6:動粘度12.8mm/s(30℃)の鉱物油
A-7:動粘度13.5mm/s(30℃)の鉱物油
A-8:動粘度37.0mm/s(30℃)の鉱物油
Details of each component listed in Table 1 are as follows.
<Mineral oil (A)>
A-1: Mineral oil with a kinematic viscosity of 4.4 mm 2 /s (30°C) A-2: Mineral oil with a kinematic viscosity of 9.0 mm 2 /s (30°C) A-3: Mineral oil with a kinematic viscosity of 9.4 mm 2 /s (30°C) A-4: Mineral oil with a kinematic viscosity of 9.8 mm 2 /s (30°C) A-5: Mineral oil with a kinematic viscosity of 11.4 mm 2 /s (30°C) A-6: Mineral oil with a kinematic viscosity of 12.8 mm 2 /s (30°C) A-7: Mineral oil with a kinematic viscosity of 13.5 mm 2 /s (30°C) A-8: Mineral oil with a kinematic viscosity of 37.0 mm 2 /s (30°C)

<ジメチルシリコーン(B1)>
B1-1:動粘度5mm/s(25℃)のジメチルシリコーン
B1-2:動粘度10mm/s(25℃)のジメチルシリコーン
B1-3:動粘度9mm/s(25℃)のジメチルシリコーン
<ジメチルシリコーン(B2)>
B2-1:動粘度100mm/s(25℃)のジメチルシリコーン
B2-2:動粘度1000mm/s(25℃)のジメチルシリコーン
B2-3:動粘度3000mm/s(25℃)のジメチルシリコーン
B2-4:動粘度10000mm/s(25℃)のジメチルシリコーン
B2-5:動粘度90mm/s(25℃)のジメチルシリコーン
<シリコーンレジン(B3)>
B3-1:アミノ変性シリコーンレジン
B3-2:シリコーンレジン
<その他のシリコーン成分>
B4-1:動粘度15mm/s(25℃)のジメチルシリコーン
B4-2:動粘度50mm/s(25℃)のジメチルシリコーン
B4-3:動粘度4 mm/s(25℃)の環状シロキサン5量体
B4-4:動粘度60mm/s(25℃)のアミノ変性シリコーン(モノアミン型、当量4100g/moL)
B4-5:動粘度450mm/s(25℃)のアミノ変性シリコーン(ジアミン型、当量5700g/moL)
<Dimethyl silicone (B1)>
B1-1: Dimethyl silicone having a kinematic viscosity of 5 mm 2 /s (25° C.) B1-2: Dimethyl silicone having a kinematic viscosity of 10 mm 2 /s (25° C.) B1-3: Dimethyl silicone having a kinematic viscosity of 9 mm 2 /s (25° C.) <Dimethyl silicone (B2)>
B2-1: Dimethyl silicone having a kinematic viscosity of 100 mm 2 /s (25°C) B2-2: Dimethyl silicone having a kinematic viscosity of 1000 mm 2 /s (25°C) B2-3: Dimethyl silicone having a kinematic viscosity of 3000 mm 2 /s (25°C) B2-4: Dimethyl silicone having a kinematic viscosity of 10000 mm 2 /s (25°C) B2-5: Dimethyl silicone having a kinematic viscosity of 90 mm 2 /s (25°C) <Silicone resin (B3)>
B3-1: Amino-modified silicone resin B3-2: Silicone resin <Other silicone components>
B4-1: Dimethyl silicone with a kinematic viscosity of 15 mm 2 /s (25°C) B4-2: Dimethyl silicone with a kinematic viscosity of 50 mm 2 /s (25°C) B4-3: Cyclic siloxane pentamer with a kinematic viscosity of 4 mm 2 /s (25°C) B4-4: Amino-modified silicone (monoamine type, equivalent weight 4100 g/mol) with a kinematic viscosity of 60 mm 2 /s (25°C)
B4-5: Amino-modified silicone (diamine type, equivalent weight 5700 g/mol) with a kinematic viscosity of 450 mm 2 /s (25°C)

<ゲルベアルコール(C)>
C-1:2-ブチルオクタノール
C-2:2-ヘキシルデカノール
C-3:2-オクチルドデカノール
<その他成分>
D-1:アルキルベンゼンスルホン酸のテトラブチルホスホニウム塩
D-2:グリセリンの縮合物(平均縮合度=5)とリシノール酸のエステル
D-3:ジ(2-エチルヘキシル)スルホコハク酸のナトリウム塩
<Guerbet Alcohol (C)>
C-1: 2-butyloctanol C-2: 2-hexyldecanol C-3: 2-octyldodecanol <Other ingredients>
D-1: Tetrabutylphosphonium salt of alkylbenzenesulfonic acid D-2: Ester of glycerin condensate (average condensation degree = 5) and ricinoleic acid D-3: Sodium salt of di(2-ethylhexyl)sulfosuccinic acid

<評価方法及び評価基準>
(1)処理剤の保存安定性に関する評価
[処理剤の保存安定性の評価方法]
上記実施例と比較例の弾性繊維用処理剤を、5℃の環境下で1ヵ月静置し、下記の基準で処理剤の保存安定性を評価した。
[処理剤の保存安定性の評価基準]
◎◎:沈殿や分離が無く、調製時と同様に均一な状態を保っている。
◎:ごくわずかに沈殿を生じるが、室温において静置すると調製時と同様に均一な状態に復元する。
〇:沈殿を生じるが、室温条件で撹拌することで調製時と同様に均一な状態に復元する。
×:沈殿、分離が生じる。室温条件で攪拌しても、均一な状態に復元しない。
<Evaluation method and criteria>
(1) Evaluation of storage stability of treatment agent [Method for evaluating storage stability of treatment agent]
The treatment agents for elastic fibers of the above Examples and Comparative Examples were left to stand in an environment of 5°C for one month, and the storage stability of the treatment agents was evaluated according to the following criteria.
[Evaluation criteria for storage stability of processing agents]
◎◎: No precipitation or separation occurred, and the solution remained homogeneous, just like when it was prepared.
◎: A very small amount of precipitation occurs, but when left standing at room temperature, the solution returns to a homogeneous state similar to that at the time of preparation.
◯: Precipitation occurs, but stirring at room temperature restores the solution to a homogeneous state, just as when it was prepared.
×: Precipitation and separation occur. Even when stirred at room temperature, the mixture does not return to a homogeneous state.

(2)均一付着性に関する評価
[均一付着性の評価方法]
摩擦測定メーター(エイコー測器社製、SAMPLE FRICTION UNIT MODEL TB-1)を用い、2つのフリーローラー間に直径1cmで表面粗度2Sのクロムメッキ梨地ピンを配置し、このクロムメッキ梨地ピンに対し、ポリウレタン系弾性繊維パッケージから引き出したポリウレタン系弾性繊維を、接触角度が90度となるようセットした。
25℃で60%RHの条件下、入側で初期張力(T1)5gをかけ、100m/分の速度で走行させたときの出側の2次張力(T2)を0.1秒毎に1分間測定した。この時のT2の標準偏差を求め、次の基準で評価した。
[均一付着性の評価基準]
◎◎:T2の標準偏差が1.5未満(油剤が均一に付着しており、繊維がクロムメッキ梨地ピンと擦過した際に張力変動がほとんどない状態である。)
◎:T2の標準偏差が1.5以上1.7未満(油剤がほぼ均一に付着しており、繊維がクロムメッキ梨地ピンと擦過した際に張力変動が僅かにあるが、操業に問題はない状態である。)
○:T2の標準偏差が1.7以上2.0未満(油剤がほぼ均一に付着しており、繊維がクロムメッキ梨地ピンと擦過した際に張力変動があるが、操業に問題はない状態である。)
×:T2の標準偏差が2.0以上(油剤が均一に付着しておらず、繊維がクロムメッキ梨地ピンと擦過した際に張力変動が大きく、操業時に問題となる状態である。)
(2) Evaluation of uniform adhesion [Method for evaluating uniform adhesion]
Using a friction measurement meter (SAMPLE FRICTION UNIT MODEL TB-1, manufactured by Eiko Sokki Co., Ltd.), a chrome-plated satin-finished pin with a diameter of 1 cm and a surface roughness of 2S was placed between two free rollers, and polyurethane elastic fibers drawn out from a polyurethane elastic fiber package were set so that the contact angle was 90 degrees relative to the chrome-plated satin-finished pin.
Under conditions of 25°C and 60% RH, an initial tension (T1) of 5 g was applied to the inlet side, and the web was run at a speed of 100 m/min. The secondary tension (T2) on the outlet side was measured every 0.1 seconds for 1 minute. The standard deviation of T2 was calculated and evaluated according to the following criteria.
[Evaluation criteria for uniform adhesion]
⊚◎: Standard deviation of T2 is less than 1.5 (the oil is uniformly applied, and there is almost no fluctuation in tension when the fiber rubs against the chrome-plated matte pin).
◎: Standard deviation of T2 is 1.5 or more and less than 1.7 (the oil is applied almost uniformly, and there is a slight fluctuation in tension when the fiber rubs against the chrome-plated matte pin, but this does not pose a problem in operation.)
○: The standard deviation of T2 is 1.7 or more and less than 2.0 (the oil is applied almost uniformly, and there is tension fluctuation when the fiber rubs against the chrome-plated matte pin, but there is no problem in operation).
×: The standard deviation of T2 is 2.0 or more (the oil is not uniformly applied, and when the fiber rubs against the chrome-plated matte pin, the tension fluctuates greatly, which is a problem during operation).

(3)形状保持性に関する評価方法
[形状保持性の評価方法]
20デニールのポリウレタン系弾性繊維に処理剤をノズル給油法で5.0%付着させ、巻き取り速度550m/分で、長さ57mmの円筒状紙管に、巻き幅42mmを与えるトラバースガイドを介して、サーフェイスドライブの巻取機を用いて500g巻き取り、ポリウレタン系弾性繊維のパッケージを得た。
得られたポリウレタン系弾性繊維のパッケージについて、巻き幅の最大値(Wmax)と最小幅(Wmin)を計測し、バルジ(双方の差「Wmax-Wmin」)を求め、下記の基準で評価した。
[形状保持性の評価基準]
◎◎:バルジが3mm未満
◎:バルジが3mm以上4.5mm未満
○:バルジが4.5mm以上6.0mm未満
×:バルジが6.0mm以上
(3) Evaluation method for shape retention [Evaluation method for shape retention]
A treating agent was applied to 20 denier polyurethane elastic fiber at a rate of 5.0% by nozzle oiling, and 500 g of the fiber was wound onto a cylindrical paper tube 57 mm in length at a winding speed of 550 m/min via a traverse guide giving a winding width of 42 mm using a surface drive winder, to obtain a polyurethane elastic fiber package.
The maximum winding width (Wmax) and minimum winding width (Wmin) of the obtained polyurethane elastic fiber package were measured, and the bulge (the difference between the two "Wmax-Wmin") was determined and evaluated according to the following criteria.
[Evaluation criteria for shape retention]
◎◎: Bulge is less than 3 mm ◎: Bulge is 3 mm or more and less than 4.5 mm ○: Bulge is 4.5 mm or more and less than 6.0 mm ×: Bulge is 6.0 mm or more

(4)解舒性に関する評価
[解舒性の評価方法]
片側に第1駆動ローラーとこれに常時接する第1遊離ローラーとで送り出し部を構成し、また反対側に第2駆動ローラーとこれに常時接する第2遊離ローラーとで巻き取り部を構成して、該送り出し部に対し該巻き取り部を水平方向で20cm離して設置した。
第1駆動ローラーに各処理剤を付与したポリウレタン系弾性繊維のパッケージを装着し、糸巻の厚さが2mmになるまで解舒して、第2駆動ローラーに巻き取った。
第1駆動ローラーからのポリウレタン系弾性繊維の送り出し速度を50m/分で固定する一方、第2駆動ローラーへのポリウレタン系弾性繊維の巻き取り速度を50m/分より徐々に上げて、ポリウレタン系弾性繊維をパッケージから強制解舒した。
この強制解舒時において、送り出し部分と巻き取り部分との間でポリウレタン系弾性繊維の踊りがなくなる時点での巻き取り速度V(m/分)を測定し、下記の算出式から解舒性(%)を求め、下記の基準で評価した。
[算出式]
解舒性(%)=(V-50)÷50×100=(V-50)×2
[解舒性の評価基準]
◎◎:解舒性が150%未満(全く問題なく、安定に解舒できる状態である。)
◎:解舒性が150%以上165%未満(糸の引き出しに僅かに抵抗があるが、糸切れは無く、操業に問題はない状態である。)
○:解舒性が165%以上180%未満(糸の引き出しに抵抗があるが、糸切れは無く、操業に問題はない状態である。)
×:解舒性が180%以上(糸の引き出しに抵抗がある。糸切れもあって、操業時に問題となる状態である。)
(4) Evaluation of unwinding properties [Method of evaluating unwinding properties]
The delivery section was formed on one side by a first drive roller and a first free roller that was in constant contact with it, and the winding section was formed on the other side by a second drive roller and a second free roller that was in constant contact with it, and the winding section was installed 20 cm horizontally away from the delivery section.
The polyurethane elastic fiber package to which each treatment agent had been applied was attached to the first driving roller, and the fiber was unwound until the thickness of the spool reached 2 mm, and then wound onto the second driving roller.
The feed speed of the polyurethane-based elastic fiber from the first drive roller was fixed at 50 m/min, while 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 when the polyurethane elastic fiber stopped dancing between the let-off section and the take-up section, and the unwinding property (%) was calculated using the following formula and evaluated according to the following criteria.
[Calculation formula]
Unwindability (%) = (V-50) ÷ 50 x 100 = (V-50) x 2
[Evaluation criteria for unwinding]
◎◎: Unwinding property is less than 150% (there is no problem at all and the film can be unwound stably).
◎: Unwinding property is 150% or more and less than 165% (there is a slight resistance when pulling out the yarn, but there is no yarn breakage and there is no problem with operation).
○: Unwinding property is 165% or more and less than 180% (there is resistance when pulling out the yarn, but there is no yarn breakage and there is no problem with operation).
×: Unwinding property is 180% or more (there is resistance to pulling out the yarn. Yarn breakage may occur, which is a problem during operation.)

上記の(1)処理剤の保存安定性、(2)均一付着性、(3)形状保持性、(4)解舒性の評価結果を、実施例1~24の弾性繊維用処理剤は表3に、比較例1~11の弾性繊維用処理剤は表4にまとめて示す。
The evaluation results of (1) storage stability of the treatment agent, (2) uniform adhesion, (3) shape retention, and (4) unwinding property are summarized in Table 3 for the treatment agents for elastic fibers of Examples 1 to 24, and in Table 4 for the treatment agents for elastic fibers of Comparative Examples 1 to 11.

上記表1~4に示すとおり、本発明の弾性繊維用処理剤の具体例である実施例1~24は、(1)処理剤の保存安定性、(2)均一付着性、(3)形状保持性、(4)解舒性の全ての評価結果が、良好(◎◎)~操業に問題ない程度(○)の範囲であることから、非常に有用であることが確認された。
これに対して、処理剤の全質量に対するシリコーン成分(B)の含有量が、本発明の範囲から外れる比較例1、2や、ジメチルシリコーン(B2)を含有しない比較例3は、本発明の弾性繊維用処理剤、例えば実施例14と比較すると、(3)形状保持性に劣るものであることが明らかとなった。
また、本発明の鉱物油(A)を含有しない比較例5は、(1)処理剤の保存安定性と(3)形状保持性に、本発明のジメチルシリコーン(B1)を含有しない比較例6、7は、(1)処理剤の保存安定性と(2)均一付着性に、さらに、本発明のジメチルシリコーン(B1)とジメチルシリコーン(B2)共に含有しない比較例9は、(1)処理剤の保存安定性、(2)均一付着性、(4)解舒性に、それぞれ劣ることが明らかとなった。
As shown in Tables 1 to 4 above, Examples 1 to 24, which are specific examples of the treatment agent for elastic fibers of the present invention, were confirmed to be very useful, as all of the evaluation results for (1) storage stability of the treatment agent, (2) uniform adhesion, (3) shape retention, and (4) unwinding ability were in the range of good (◎◎) to no problems in operation (○).
In contrast, Comparative Examples 1 and 2, in which the content of silicone component (B) relative to the total mass of the treatment agent is outside the range of the present invention, and Comparative Example 3, which does not contain dimethyl silicone (B2), were found to be inferior in (3) shape retention when compared with the treatment agent for elastic fibers of the present invention, for example, Example 14.
Furthermore, it was revealed that Comparative Example 5, which did not contain the mineral oil (A) of the present invention, was inferior in (1) the storage stability of the treatment agent and (3) the shape retention, Comparative Examples 6 and 7, which did not contain the dimethyl silicone (B1) of the present invention, were inferior in (1) the storage stability of the treatment agent and (2) the uniform adhesion, and Comparative Example 9, which did not contain either the dimethyl silicone (B1) or the dimethyl silicone (B2) of the present invention, was inferior in (1) the storage stability of the treatment agent, (2) the uniform adhesion, and (4) the reelability.

Claims (7)

鉱物油(A)と、下記のジメチルシリコーン(B1)、及び下記のジメチルシリコーン(B2)を含むシリコーン成分(B)と、を含有し、処理剤の全質量に対して、前記シリコーン成分(B)を1~35質量%の範囲で含有することを特徴とする弾性繊維用処理剤。
ジメチルシリコーン(B1):25℃における動粘度が12mm/s以下であるジメチルシリコーン。
ジメチルシリコーン(B2):25℃における動粘度が90mm/s以上であるジメチルシリコーン。
A treatment agent for elastic fibers, comprising a mineral oil (A) and a silicone component (B) containing the following dimethyl silicone (B1) and the following dimethyl silicone (B2), wherein the silicone component (B) is contained in an amount of 1 to 35 mass% based on the total mass of the treatment agent.
Dimethyl silicone (B1): Dimethyl silicone having a kinematic viscosity at 25°C of 12 mm 2 /s or less.
Dimethyl silicone (B2): Dimethyl silicone having a kinematic viscosity at 25°C of 90 mm 2 /s or more.
処理剤の全質量に対して、前記シリコーン成分(B)を10~35質量%の範囲で含有する請求項1に記載の弾性繊維用処理剤。 The treatment agent for elastic fibers according to claim 1, containing the silicone component (B) in an amount ranging from 10 to 35% by mass based on the total mass of the treatment agent. 前記ジメチルシリコーン(B1)、及び前記ジメチルシリコーン(B2)の質量比が、ジメチルシリコーン(B1)/ジメチルシリコーン(B2)=97.5/2.5~25.0/75.0である請求項1に記載の弾性繊維用処理剤。 The treatment agent for elastic fibers according to claim 1, wherein the mass ratio of the dimethyl silicone (B1) to the dimethyl silicone (B2) is dimethyl silicone (B1)/dimethyl silicone (B2) = 97.5/2.5 to 25.0/75.0. 前記鉱物油(A)が、30℃における動粘度が10mm/s以下である鉱物油を含む請求項1に記載の弾性繊維用処理剤。 2. The treatment agent for elastic fibers according to claim 1, wherein the mineral oil (A) contains a mineral oil having a kinematic viscosity at 30°C of 10 mm 2 /s or less. シリコーン成分(B)が、更にシリコーンレジン(B3)を含有する請求項1に記載の弾性繊維用処理剤。 The treatment agent for elastic fibers according to claim 1, wherein the silicone component (B) further contains a silicone resin (B3). 更に、ゲルベアルコール(C)を含有する請求項1に記載の弾性繊維用処理剤。 The treatment agent for elastic fibers according to claim 1, further comprising Guerbet alcohol (C). 請求項1~6のいずれか一項に記載の弾性繊維用処理剤が付着していることを特徴とする弾性繊維。
An elastic fiber having the treating agent for elastic fibers according to any one of claims 1 to 6 attached thereto.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012255244A (en) 2011-05-16 2012-12-27 Takemoto Oil & Fat Co Ltd Coating type elastic fiber treating agent, treating method of elastic fiber, and elastic fiber
CN102877296A (en) 2012-10-30 2013-01-16 佛山市顺德区德美瓦克有机硅有限公司 High-unwinding-tension spandex oil preparation
JP2017186704A (en) 2016-04-07 2017-10-12 竹本油脂株式会社 Treatment agent for elastic fiber, elastic fiber, and method for producing polyurethane-based elastic fiber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012255244A (en) 2011-05-16 2012-12-27 Takemoto Oil & Fat Co Ltd Coating type elastic fiber treating agent, treating method of elastic fiber, and elastic fiber
CN102877296A (en) 2012-10-30 2013-01-16 佛山市顺德区德美瓦克有机硅有限公司 High-unwinding-tension spandex oil preparation
JP2017186704A (en) 2016-04-07 2017-10-12 竹本油脂株式会社 Treatment agent for elastic fiber, elastic fiber, and method for producing polyurethane-based elastic fiber

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