JP2009138282A - Treating agent for elastic fibers and elastic fibers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a treating agent for elastic fibers, capable of preventing electrostatic troubles and loosing troubles accompanied by the speed-up of post-processing processes, and to provide elastic fibers having the treating agent imparted thereto. <P>SOLUTION: The present invention provides the treating agent for the elastic fibers, containing at least one selected from silicone oils, mineral oils and ester oils and further containing a quaternary ammonium phosphate in an amount of 0.01 to 10 wt.%, and the elastic fibers having 0.1 to 15 wt.% of the treating agent imparted thereto. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elastic fiber treatment agent having excellent antistatic and unwinding properties, and an elastic fiber treated with the treatment agent.

Patent Document 1 describes a treatment agent for elastic fibers that contains a silicone resin and / or an organic phosphate ester salt and is excellent in unwinding property, smoothness, and antistatic property.
Patent Document 2 includes a mixture of an amino-modified silicone and a phosphate ester, in which a metal salt of a higher fatty acid is dispersed, unwinding property, antistatic property, cheese candy shape, smoothness, and cotton at the time of weaving An elastic fiber treatment agent having excellent prevention is described.

JP 2004-162187 A JP 2006-161253 A

Silicone oils, mineral oils, ester oils, etc. are used as base components for elastic fiber oils. Recently, however, the speed of post-processing of elastic fibers and the use of finer dtex have been promoted. There is a tendency for troubles due to static electricity to increase in the processing process. Furthermore, the difference in unwinding property between the outer layer and the inner layer of Cheese tends to be a problem. And the processing agent for elastic fibers described in patent document 1 and patent document 2 is insufficient with respect to the tendency of these troubles.
An object of the present invention is to provide a processing agent for elastic fibers which eliminates static electricity troubles and unwinding troubles associated with high-speed post-processing steps, and an elastic fiber to which the processing agent is applied.

As a result of intensive studies, the present inventors have found that a treating agent containing a base component and a quaternary ammonium phosphate salt is more excellent in antistatic properties and unraveling properties, and reached the present invention.
That is, the present invention is an elastic fiber treatment agent containing at least one selected from silicone oil, mineral oil and ester oil as a base component and 0.01 to 10% by weight of a quaternary ammonium phosphate salt. .
The proportion of the base component in the treatment agent is preferably 50% by weight or more. Moreover, it is preferable to further contain 0.01 to 10% by weight of a silicone resin. Moreover, it is preferable to further contain 0.01 to 10% by weight of amino-modified silicone and / or polyether-modified silicone.

（Ｒ^１、Ｒ^２、Ｒ^３およびＲ^４は、炭素数１〜３０の炭化水素基を示す。ＡおよびＡ’は、炭素数２〜４のアルキレン基を示す。ｎおよびｍは、０〜２０の整数を示す。Ｒ^５およびＲ^６は、炭素数１〜３０の炭化水素基またはいずれか一方が水素原子を示す。）
また、本発明は、前記処理剤が０．１〜１５重量％付与されている、弾性繊維に関する。 The quaternary ammonium phosphate salt is preferably a compound represented by the following chemical formula (1).

(R ¹ , R ² , R ³ and R ⁴ represent a hydrocarbon group having 1 to 30 carbon atoms. A and A ′ represent an alkylene group having 2 to 4 carbon atoms. And represents an integer of 20. R ⁵ and R ^{6 each} represent a hydrocarbon group having 1 to 30 carbon atoms or one of which represents a hydrogen atom.
Moreover, this invention relates to the elastic fiber to which the said processing agent is provided 0.1 to 15weight%.

  The treatment agent of the present invention is excellent in antistatic and unwinding properties. Further, by using the treatment agent of the present invention, an elastic fiber excellent in antistatic property and unwinding property can be obtained.

  This invention is a processing agent for elastic fibers which contains at least 1 sort (s) chosen from silicone oil, mineral oil, and ester oil as a base component, and contains 0.01 to 10 weight% of quaternary ammonium phosphate salts. This will be described in detail below.

In the treatment agent of the present invention, it is necessary to contain a quaternary ammonium phosphate salt, and the quaternary ammonium phosphate salt is preferably a compound represented by the chemical formula (1). R ¹ , R ² , R ³ and R ⁴ each represent a hydrocarbon group having 1 to 30 carbon atoms. When other hydrophilic substituents are introduced into R ¹ , R ² , R ³ and R ⁴ , the compatibility with the base component may deteriorate. R ¹ , R ² , R ³ and R ⁴ preferably have one hydrocarbon group having 8 to 24 carbon atoms, and the other three hydrocarbon groups having 1 to 8 carbon atoms. . The hydrocarbon group is preferably an aliphatic hydrocarbon group, more preferably a saturated aliphatic hydrocarbon group. The hydrocarbon group may be linear or branched.

A and A ′ each represent an alkylene group having 2 to 4 carbon atoms, specifically an ethylene group, a propylene group, or a butylene group. (OA) _n, (OA ′) _m represents a single, block or random copolymer of an oxyethylene group, an oxypropylene group, or an oxybutylene group.
n and m are each independently an integer of 0 to 20, more preferably an integer of 0 to 5. Most preferably, it is 0.
R ⁵ and R ⁶ represent a hydrocarbon group having 1 to 30 carbon atoms or one of which is a hydrogen atom. That is, each of R ⁵ and R ⁶ is a hydrocarbon group having 1 to 30 carbon atoms, or one of R ⁵ and R ⁶ is a hydrogen atom and the other is a hydrocarbon group having 1 to 30 carbon atoms. Indicates that When other hydrophilic substituents are contained in R ⁵ and R ⁶ , compatibility with the base component may be deteriorated. As for carbon number of a hydrocarbon group, 1-10 are more preferable. The hydrocarbon group is preferably an aliphatic hydrocarbon group, more preferably a saturated aliphatic hydrocarbon group. The hydrocarbon group may be linear or branched.

Examples of the quaternary ammonium cation forming the quaternary ammonium phosphate salt used in the present invention include trimethyl octyl ammonium cation, triethyl stearyl ammonium cation, and trioctyl propyl ammonium cation.
Similarly, examples of the phosphate anion forming the quaternary ammonium phosphate salt include dilauryl phosphate anion, stearyl phosphate anion, dipolyoxyethylene lauryl phosphate anion, dipolyoxypropylene stearyl phosphate anion, and the like. Specific compounds include trimethyloctyl ammonium octyl phosphate, trimethyl octyl ammonium diethyl phosphate, trimethyl octyl ammonium stearyl phosphate, trimethyl stearyl ammonium distearyl phosphate, trimethyl stearyl ammonium diethyl phosphate, trimethyl stearyl. Ammonium dimethyl phosphate, trioctylmethyl ammonium dioctyl phosphate, trimethyl octyl ammonium polyoxyethylene (3) octyl phosphate, trimethyl stearyl ammonium polyoxypropylene (6) stearyl phosphate, triethyl stearyl ammonium polyoxyethylene ( 2) Polyoxypropylene (2) random dioctyl phosphate and the like.

  The ratio of the quaternary ammonium phosphate salt in the treating agent is 0.01 to 10% by weight, preferably 0.1 to 5% by weight, and more preferably 0.5 to 3% by weight. When the amount is less than 0.01% by weight, the effect of the present invention is not exhibited, and when the amount exceeds 10% by weight, the compatibility with the base component deteriorates and precipitates at a low temperature, which may cause scum in the post-processing step. is there.

  The treatment agent of the present invention essentially contains at least one component selected from silicone oil, mineral oil and ester oil as a base component. The proportion of the base component in the treating agent is preferably 50% by weight or more, 50 to 99.99% by weight, 60 to 99.97% by weight, 60 to 99.9% by weight, 60 to 99.5% by weight, 60%. It is preferable in the order of ˜80% by weight. If it is less than 50% by weight, smoothness and unraveling properties may be insufficient.

The silicone oil is not particularly limited, and examples thereof include polydimethylsiloxane, polyalkylsiloxane, and polyalkylphenylsiloxane (both silicone oils have a viscosity at 25 ° C .: ^{2 to} 100 mm ² / s). You may use a seed | species or 2 or more types together. Among these silicone oils, the viscosity at 30 ° C. of the elastic fiber treatment agent is preferable because it is easy to handle during the oiling of the treatment agent, and the viscosity is too high. It is preferable to select a silicone oil that can be adjusted to 3 to 100 mm ² / s, more preferably 5 to 50 mm ² / s.

  The mineral oil is not particularly limited, and examples thereof include spindle oil and liquid paraffin having a viscosity at 30 ° C. of 30 to 150 seconds, preferably 60 to 100 seconds. May be. When the viscosity of the mineral oil is lower than 30 seconds, the quality of the obtained elastic fiber may be deteriorated. On the other hand, if the viscosity of the mineral oil is more than 150 seconds, the viscosity of the entire elastic fiber treatment agent increases, and the resulting elastic fiber may be taken by the roller and the yarn may be broken.

  Although it does not specifically limit as ester oil, The ester manufactured from a fatty acid and alcohol can be mentioned. Examples of ester oils include esters produced from fatty acids selected from the following and alcohols, but esters that do not use the following fatty acids or alcohols as raw materials may also be used. The ester oil may be used alone or in combination of two or more. Although there is no limitation in particular as a viscosity of ester oil, For example, the viscosity in 30 degreeC is 30 to 150 second, Preferably 60 to 100 second is preferable.

  The fatty acid is not particularly limited with respect to its carbon number, presence or absence of branching, valence, etc., and may be a higher fatty acid, a cyclic fatty acid, or a fatty acid containing an aromatic ring. Examples of the fatty acid include caprylic acid, 2-ethylhexylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachic acid, behenic acid, lignoselenic acid, adipic acid, and sebacic acid. And benzoic acid.

  The alcohol is not particularly limited with respect to its carbon number, presence or absence of branching, valence, etc., and may be a higher alcohol, a cyclic alcohol, or an alcohol containing an aromatic ring. Examples of the alcohol include octyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, ethylene glycol, hexanediol, glycerin, trimethylolpropane, Examples include pentaerythritol, sorbitol, sorbitan and the like.

The base component is not particularly limited as long as it is a component composed of at least one selected from silicone oil, mineral oil and ester oil, but low viscosity mineral oil and ester oil may swell elastic fibers, Silicone oil is preferred as an essential component.
The content of the silicone oil is not particularly limited, but is preferably 30% by weight or more, more preferably 50% by weight or more based on the entire base component. A silicone oil content of 30% by weight or more is advantageous in terms of smoothness and unraveling properties.

  Moreover, the processing agent for elastic fibers of the present invention may further contain a modified silicone in order to improve antistatic properties and unwinding properties. The modified silicone is generally a reactive (functional) group or a non-reactive group at least at one of both ends, one end, a side chain, and both side ends of a polysiloxane such as dimethyl silicone (polydimethylsiloxane) ( It has a structure in which at least one functional group is bonded.

  Examples of the modified silicone include alkyl-modified silicones such as modified silicones having a long-chain alkyl group (such as an alkyl group having 6 or more carbon atoms or 2-phenylpropyl group); ester-modified silicones that are modified silicones having ester bonds; alcohols Carbinol-modified silicone that is a modified silicone having a functional hydroxyl group; Carboxyl-modified silicone that is a modified silicone having an acid anhydride group or carboxyl group; Mercapto-modified silicone that is a modified silicone having a mercapto group; Glycidyl group or alicyclic epoxy group Epoxy-modified silicones such as modified silicones having epoxy groups such as; amino-modified silicones such as modified silicones having amino groups such as aminopropyl groups and N- (2-aminoethyl) aminopropyl groups; Alkylene group (e.g., polyoxyethylene group, polyoxypropylene group, a polyoxyethylene oxypropylene group, etc.) can be given polyether-modified silicones such as modified silicone having. The elastic fiber treating agent of the present invention preferably further contains at least one modified silicone selected from these. In view of enhancing the antistatic effect, it is more preferable to contain an amino-modified silicone and / or a polyether-modified silicone.

  The proportion of the modified silicone in the treatment agent of the present invention is preferably 0.01 to 10% by weight, more preferably 0.05 to 7% by weight, and further preferably 0.1 to 5% by weight. If it is less than 0.01% by weight, the effect due to the addition may not be seen due to too little. On the other hand, if it exceeds 10% by weight, the proper performance of the treatment agent may not be obtained.

Moreover, the processing agent for elastic fibers of the present invention may further contain a silicone resin in order to improve antistatic properties and unwinding properties. The silicone resin means a silicone having a three-dimensional crosslinked structure, and may further contain other modified silicones and the like. The silicone resin is generally at least one component selected from a monofunctional constituent unit (M), a bifunctional constituent unit (D), a trifunctional constituent unit (T), and a tetrafunctional constituent unit (Q). It consists of units.
Examples of the silicone resin include silicone resins such as MQ silicone resin, MQT silicone resin, T silicone resin, and DT silicone resin.

Examples of the MQ silicone resin include R ⁷ R ⁸ R ⁹ SiO _1/2 that is a monofunctional structural unit (wherein R ⁷ , R ^8, and R ⁹ are all hydrocarbon groups) and tetrafunctional. And a silicone resin containing SiO _4/2 which is a structural unit.
Examples of the MQT silicone resin include R ⁷ R ⁸ R ⁹ SiO _1/2 that is a monofunctional structural unit (wherein R ⁷ , R ^8, and R ⁹ are all hydrocarbon groups) and tetrafunctional. And a silicone resin containing SiO _4/2 which is a structural unit and RSiO _3/2 which is a trifunctional structural unit (wherein R is a hydrocarbon group).
Examples of the T-silicone resin include a silicone resin containing RSiO _3/2 (where R is a hydrocarbon group) which is a trifunctional structural unit (the terminal of which is a hydrocarbon group, silanol group or alkoxy group). Or the like)).
As the DT silicone resin, for example, R ⁷ R ⁸ SiO _2/2 which is a bifunctional structural unit (wherein R ⁷ and R ⁸ are both hydrocarbon groups) and a trifunctional structural unit. There can be mentioned RSiO _3/2 (where R is a hydrocarbon group).

  The proportion of the silicone resin in the treatment agent of the present invention is preferably 0.01 to 10% by weight, more preferably 0.05 to 7% by weight, and further preferably 0.1 to 5% by weight. If the ratio of the silicone resin is less than 0.01% by weight, the effect of addition may not be seen. On the other hand, if the ratio of the silicone resin is more than 10% by weight, an appropriate balance of oil agent performance may not be maintained.

  The treatment agent for elastic fibers of the present invention may further contain a higher fatty acid metal salt (metal soap) in order to enhance the smoothness and antistatic effect. The proportion of the higher fatty acid metal salt in the elastic fiber treating agent of the present invention is preferably 0.01 to 10% by weight, more preferably 0.2 to 5% by weight, and particularly preferably 0.5 to 3% by weight. . If it is less than 0.01% by weight, the effect due to the addition may not be seen due to too little. On the other hand, if it exceeds 10% by weight, an effect commensurate with the addition of a large amount cannot be obtained, which may be economically disadvantageous.

  As the metal salt of higher fatty acid, known ones conventionally used for elastic fibers can be used, and examples thereof include calcium distearate, magnesium distearate, aluminum tristearate, barium distearate, and zinc distearate. It is done. Of these higher fatty acid metal salts, calcium distearate, magnesium distearate and the like are preferred.

The average particle size of the higher fatty acid metal salt is not particularly limited, but is preferably 0.01 to 5 μm, more preferably 0.02 to 3 μm, and particularly preferably 0.05 to 2 μm. When the average particle size of the metal salt of the higher fatty acid is less than 0.01 μm, the effect due to the addition may not be observed. On the other hand, if the average particle diameter of the metal salt of higher fatty acid is more than 5 μm, it may easily fall off from the fiber surface and may cause scum in the post-spinning process.
The shape of the metal salt of the higher fatty acid is not particularly limited, such as a spherical shape, a lump shape, a limpen shape, a strip shape, and a needle shape, but a needle shape is preferable. When the shape of the metal salt of the higher fatty acid is needle-like, the ratio between the longitudinal direction and the transverse direction is preferably 10: 1 to 2: 1, more preferably 8: 1 to 3 from the viewpoint of unraveling property. : 1.

  The treatment agent for elastic fibers of the present invention is provided with a cationic surfactant and / or an anionic surfactant (hereinafter referred to as a cationic surfactant and / or an anionic surfactant) in order to impart smoothness, antistatic property and unwinding property. The agent may be referred to as surfactant a.).

  Examples of cationic surfactants include diethanolamine monostearate, triethanolamine monooleate, oleyldimethylethylammonium ethosulphate, dimethylhydroxyethylammonium nitrate, lauryldimethylethylammonium ethosulphate, oleylmorpholium ethosulphate. , Lauryl hydroxyethyl imidazolium etosulphate, distearylamide diethylamine etosulphate and the like.

  Examples of the anionic surfactant include potassium laurate, sodium laurate, triethanolamine laurate, morpholine laurate, dodecyl benzoyl sulfonate, sodium diisooctyl sulfosuccinate, and sodium polyoxyethylene (3) lauryl. Ether propane sulfonate, sodium polyoxyethylene (7) nonylphenol ether propane sulfonate, sodium octyl sulfate, potassium octyl sulfate, sodium polyoxyethylene (5) oleyl ether sulfate, potassium polyoxyethylene (5) stearyl ether sulfate, diethanolamine Monooctyl phosphate, potassium monopolyoxyethylene (3) stearyl ether phosphate DOO, polyoxyethylene (4) cetyl Hof follower ether.

  The proportion of the surfactant a in the elastic fiber treating agent of the present invention is preferably 0.01 to 10% by weight, more preferably 0.05 to 7% by weight, and particularly preferably 0.1 to 5% by weight. If the ratio of the surfactant a is less than 0.01% by weight, the effect due to the addition may not be seen because it is too small. On the other hand, if the ratio of the surfactant a is more than 10% by weight, an appropriate balance of oil agent performance may not be maintained.

  The treatment agent for elastic fibers of the present invention can further contain components usually used for treatment agents for elastic fibers such as a binder, an antistatic agent, an antioxidant, and an ultraviolet absorber.

The elastic fiber treating agent of the present invention preferably has a viscosity at 30 ° C. of ² to 100 mm ² / s, more preferably 5 to 15 mm ² / s. If the viscosity is less than 2 mm ² / s, the volatilization of the oil may be a problem, and if it is more than 50 mm ² / s, the wettability of the elastic fiber to the surface may be deteriorated.

  There is no limitation in particular about the method of manufacturing the processing agent for elastic fibers of this invention, A well-known method is applicable. The processing agent for elastic fibers is produced by adding and mixing the above-described constituent components in an arbitrary order.

  The elastic fiber of the present invention is an elastic fiber to which 0.1 to 15% by weight (preferably 1 to 10% by weight) of the treatment agent for elastic fiber is applied. If it is less than 0.1% by weight, the effect of the present invention is not sufficient, and if it exceeds 15% by weight, it is uneconomical.

  The elastic fiber of the present invention is a fiber having elasticity using polyether polyurethane urea, polyester polyurethane, polyether ester elastomer, polyester elastomer, polyethylene elastomer, polyamide elastomer, etc., and its elongation is usually 300% or more. is there.

  As an elastic fiber body of the present invention, for example, polyurethane urea elastic fiber is prepared by preparing polytetramethylene glycol (PTMG) having a molecular weight of 1000 to 3000 and diphenylmethane diisocyanate (MDI), and PTMG / MDI = 1/2 to 1/1. .5 (molar ratio) in a solvent such as dimethylacetamide or dimethylformamide and chain extended with a diamine such as ethylenediamine or propanediamine. It can be produced by spinning at 400 to 800 m / min. The adaptive fineness of the elastic fiber body is not particularly limited.

  The elastic fiber of the present invention has an on-thread static electricity of -1 KV to +1 KV, preferably -0.7 KV to +0.7 KV, more preferably -0.5 KV to +0.5 KV. When the static electricity on the yarn is smaller than -1 KV or larger than 1 KV, dust or the like may be attracted to the yarn, and the yarn quality may be lowered.

  As an application of the elastic fiber of the present invention, it can be used as a fabric by processing yarn such as covering yarn such as CSY, single covering, PLY and air covering, circular knitting, tricot and the like. In addition, using these processed yarns and fabrics, products that require elasticity such as stockings, socks, underwear and swimwear, and outerwear such as jeans and suits are given elasticity for comfort. Also used for purposes. More recently, it has been applied to disposable diapers.

  The present invention is described in detail in the following examples and comparative examples, but the present invention is not limited thereto. In addition, the evaluation items and the evaluation method in each example and comparative example are as follows. In the text and tables, “%” means “% by weight”.

[Evaluation method of action effect of oil]
(Processing agent viscosity)
Using a Canon Fenceke viscometer, the kinematic viscosity of the sample solution at 30 ° C. was determined.
(Knitting tension, static electricity generation amount)
In FIG. 2, the roller (9) attached to the U gauge (8) with the elastic yarn (4) vertically taken from the cheese (3) through the compensator (5), the roller (6), and the knitting needle (7). And connected to a speedometer (10) and a take-up roller (11). The rotational speed of the take-up roller is adjusted so that the traveling speed of the speedometer (10) becomes a constant speed (for example, 10 m / min, 100 m / min), and the knitting tension at that time is taken up by the take-up roller. Is measured with a U gauge (8), and the friction (g) between the fibers / knitting needles is measured. The amount of static electricity generated (kV) is measured with a Kasuga-type potentiometer (12) at a distance of 1 cm from the running yarn.
(Friction coefficient between fibers (F / Fμs))
In FIG. 3, a monofilament of elastic fiber to which a treatment agent has been applied is taken about 50 to 60 cm, a load T1 (13) is suspended at one end, and the other is attached to the U gauge (15) via a roller (14). The ends are pulled at a constant speed (for example, 3 cm / min), the secondary tension T2 at that time is measured with a U gauge (15), and the inter-fiber friction coefficient is obtained by Equation 1.
Friction coefficient (F / Fμs = 1 / θ · ln (T2 / T1) (Equation 1)
(In Equation 1, θ = 2π, ln = natural logarithm, T1 is 1 g per 22 dtex)

(Unwinding speed ratio)
In FIG. 4, the fiber cheese (16) to which the treatment agent is applied is set on the unwinding side of the unwinding speed ratio measuring machine, and the paper tube (17) is set on the winding side. After setting the winding speed to a constant speed, the rollers (18) and (19) are activated simultaneously. In this state, there is almost no tension on the yarn (20), so the yarn is stuck on the cheese and does not leave, so the unwinding point (21) is in the state shown in FIG. By changing the unwinding speed, the unwinding point (21) of the yarn (20) from the cheese changes, so the unwinding speed is set so that this point coincides with the contact point (22) between the cheese and the roller. The unraveling speed ratio is obtained by Equation 2. The smaller this value is, the better the unpacking property is.
Unwinding speed ratio (%) = (winding speed−unwinding speed) ÷ unwinding speed × 100 (Equation 2)
(Roller static electricity, static electricity on thread)
In FIG. 1, cheese (1) is set on the unwinding side of the unwinding speed ratio measuring machine, rotated at a peripheral speed of 50 m / min, the winding side is set to 100 m / min, and at 2 cm above the cheese, Kasuga The electrostatic potential difference measuring device (2) measures roller static electricity (static electricity on cheese) one hour after starting rotation. Measure the static electricity generated on the running thread (static electricity on the thread) when measuring the static electricity on the roller.

[Preparation of spinning dope]
A polytetramethylene ether glycol having a number average molecular weight of 1800 is reacted with 4,4′-diphenylmethane diisocyanate in a molar ratio of 1: 2, and then chain-extended using a 1,2-diaminopropane solution in dimethylformamide to obtain a polymer concentration of 27%. Of dimethylformamide was obtained. The concentration at 30 ° C. was 1700 mPaS.
[Preparation of treatment agent]
The components of each treatment agent described in Table 1 and Table 2 (the blending amounts in the table are parts by weight) were mixed and stirred at 30 to 40 ° C. for 1 hour to obtain treatment agents A to M.

(Examples 1-10 and Comparative Examples 1-3)
The polyurethane spinning dope was discharged into a N ₂ stream at 230 ° C. and dry-spun. After 6% by weight of the treatment agent prepared for the running yarn during spinning was applied to the fiber, it was wound around a bobbin at a speed of 600 m / min to obtain 44 dtex monofilament cheese (400 g of winding amount). The obtained cheese was left for 48 hours in an atmosphere of 35 ° C. and 50% RH for evaluation. These results are shown in Tables 1 and 2.

The schematic diagram explaining the measuring method of roller static electricity generation amount. The schematic diagram explaining the measuring method of knitting tension, and the measuring method of the amount of static electricity generation. The schematic diagram explaining the measuring method of the friction coefficient between fibers. The schematic diagram explaining the measuring method of unwinding speed ratio.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cheese of elastic fiber 2 Kasuga-type potentiometer 3 Elastic cheese 4 Elastic thread 5 Compensation sweater 6 Roller 7 Knitting needle 8 U gauge 9 Roller 10 Speedometer 11 Winding roller 12 Kasuga-type potentiometer 13 Load 14 Roller 15 U Gauge 16 Cheese 17 Winding paper tube 18 Roller 19 Roller 20 Traveling yarn 21 Unwinding point 22 Contact point of cheese and roller

Claims (6)

  A processing agent for elastic fibers, which contains at least one selected from silicone oil, mineral oil and ester oil as a base component and contains 0.01 to 10% by weight of a quaternary ammonium phosphate salt.   The processing agent for elastic fibers according to claim 1, wherein the proportion of the base component in the processing agent is 50% by weight or more.   The processing agent for elastic fibers according to claim 1 or 2, further comprising 0.01 to 10% by weight of a silicone resin.   The processing agent for elastic fibers according to any one of claims 1 to 3, further comprising 0.01 to 10% by weight of amino-modified silicone and / or polyether-modified silicone. The processing agent for elastic fibers in any one of Claims 1-4 whose said quaternary ammonium phosphate salt is a compound shown by following Chemical formula (1).

(R ¹ , R ² , R ³ and R ⁴ represent a hydrocarbon group having 1 to 30 carbon atoms. A and A ′ represent an alkylene group having 2 to 4 carbon atoms. And represents an integer of 20. R ⁵ and R ^{6 each} represent a hydrocarbon group having 1 to 30 carbon atoms or one of which represents a hydrogen atom.   The elastic fiber to which 0.1-15 weight% of processing agents in any one of Claims 1-5 are provided.

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