JPH09217277A - Antistatic and hygroscopic fiber structure and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce an antistatic and hygroscopic fiber structure, having antistatic and moisture absorbing and desorbing properties rich in durability and further a soft touch feeling by applying a specific quaternary ammonium salt to a hygroscopic polyester-based fiber and then carrying out the dry heat treatment thereof. SOLUTION: This antistatic and hygroscopic fiber structure comprises 0.02-2% owf quaternary ammonium salt represented by the formula [R1 is an 8-18C alkyl; R2 to R4 are each a 1-2C alkyl; R5 is H or methyl; (n) is 1 or 2] in a polyester-based fiber having the hygroscopicity. The fiber structure is obtained by weaving a plain weave fabric from the polyester-based fiber having the hygroscopicity which is a conjugated fiber or a blended fiber containing >=5wt.% of a polyether ester amide, prepared by copolymerizing a hydrophilic compound such as a polyoxyalkylene and containing a crosslinking agent comprising a polar group-containing compound such as a sulfoisophthalate and/or a polyfunctional compound such as trimellitic acid or a mixture of the polyether ether amide with a thermoplastic resin such as a modified polyethylene terephthalate, scouring, setting, dyeing and drying the resultant woven fabric, impregnating the woven fabric with the treating agent and carrying out the dry beat treatment thereof at 100-210 deg.C. Thereby, the antistatic and hygroscopic woven fabric is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic / hygroscopic fiber structure and a method for producing the same, and more specifically, it has antistatic / hygroscopic properties excellent in durability, particularly underwear and lining,
The present invention relates to an antistatic / hygroscopic fiber structure having a soft texture suitable for direct use such as socks, shirts and blouses, and a method for producing the same.

[0002]

2. Description of the Related Art Synthetic fibers such as polyester are widely used for clothing because they have excellent physical and chemical properties, but on the other hand, they are worn due to their low antistatic and hygroscopic properties. Sometimes it has the drawbacks of being electrically charged and stuffy. In order to impart antistatic property as a countermeasure against such a defect, synthetic fibers are adsorbed with an antistatic agent or antistatic resin, graft polymerization is carried out, or such substances are blended with the polymer constituting the synthetic fibers. What to do,
Furthermore, the thing etc. which mix a metal fiber are proposed.

However, among these countermeasures, the technique of mixing metal fibers has a drawback that the texture of the fibers is remarkably lowered. In addition, the one in which the antistatic substance is adsorbed does not have durability against washing and has a drawback that the performance is remarkably deteriorated each time it is washed. Further, the graft-polymerizable polymer has a limitation in the performance of the antistatic agent capable of being graft-polymerized, and at the same time, has a drawback of coarsely curing the fiber. Therefore,
Each method had its own problems.

As a technique for imparting hygroscopicity, from the post-processing side, synthetic fibers may be graft-polymerized with acrylic acid or methacrylic acid (Japanese Patent Publication No. 60-34979), cellulose fine powder or a specific polyamino acid system. A method of applying a hygroscopic substance such as a resin to synthetic fibers (JP-A-2-8456).
No. 5, Japanese Patent Laid-Open No. 2-145872) and the like have been proposed. Further, a method in which a copolymer having a polyalkylene glycol segment is attached to polyester fiber by dipping treatment (Japanese Patent Publication No. 53-46960) or a radical-polymerizable hydrophilic monomer is added and then polymerized on the polyester fiber. (Japanese Patent Publication Sho 58-4658
No. 9 publication) is also proposed.

Further, from the surface of the raw yarn, a specific oxalate is blended before spinning, and a part thereof is eluted in the step after spinning to form capillary condensation holes on the fiber surface (Japanese Patent Publication No. 62-7285). Japanese Patent Laid-Open No. 60-155770), there is proposed a method of forming capillary condensation pores on the fiber surface by subjecting a polyester fiber containing a metal sulfonate compound to an alkali treatment.

However, even in the case of the method of imparting the hygroscopicity, all of the methods have the drawbacks that the hygroscopicity and hygroscopicity are insufficient and the texture becomes rough and hard. Therefore, in the prior art, at least with regard to polyester fibers, the fact is that a fiber structure satisfying both the antistatic property and the hygroscopic property at the same time has not been obtained.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide an antistatic / hygroscopic fiber structure having excellent durability, antistatic / hygroscopicity, and having a soft texture. , To provide a manufacturing method thereof.

[0008]

Means for Solving the Problems According to the present invention which achieves the above objects, a polyester fiber having a hygroscopic property contains 0.02 to 2 of a quaternary ammonium salt represented by the general formula [1].
% Antistatic / hygroscopic fiber structure provided with owf.

[0009]

(Wherein R _{1 is} an alkyl group having 8 to 18 carbon atoms, R _{2 to} R _{4 is} an alkyl group having 1 to 2 carbon atoms, and R _{5 is} :
-H or -CH _3, n: 1 or 2) A method of manufacturing this antistatic-hygroscopic fiber structure is a polyester fiber having a hygroscopic, quaternary ammonium salt represented by the general formula [1] It is characterized in that an aqueous solution is applied and then the polyester fiber is subjected to a dry heat treatment.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a polyester fiber material having a hygroscopic property refers to a polyester fiber having an official moisture content higher than 0.4% of the official moisture content of polyester specified in JIS L0105. . Specifically, it is not particularly limited as long as it is a polyester containing a component having a hygroscopic property, but it will be described below in consideration of yarn-forming property, weaving property, dyeing property, durability of yarn performance, and the like. It is preferred to use such fibers.

In the present invention, one of the preferred examples of the hygroscopic polyester fiber is the hydrophilic compound (A).
A copolymerized polyester obtained by copolymerizing the above, wherein the copolymerized polyester (D) contains at least one of the polar group-containing compound (B) and the crosslinking agent (C).
Is a composite fiber or a blend fiber containing 5% by weight or more.

Another preferred example of the hygroscopic polyester fiber is that it contains 5% by weight or more of a polyether ester amide (E) or a mixture of a polyether ester amide and another thermoplastic resin (F). It is a composite fiber or a blended fiber. Of the hygroscopic polymers constituting the hygroscopic polyester fibers of the above two examples, the case of the first copolyester (D) will be described.

The hydrophilic compound (A) as a copolymerization component of the copolyester (D) has a molecular weight of 600 to 20,000, more preferably 2000 to 6000, from the viewpoint of compatibility with the polyester and dispersibility in the polyester. It is preferable. The hydrophilic compound (A) is not particularly limited as long as it is a compound containing one or more ester-forming groups, but typical compounds include polyoxyalkylene compounds, polyoxazolines, polyacrylamide and derivatives thereof. And so on. Among them, polyoxyalkylene compounds, and further polyoxyethylene compounds are preferable. Further, among the polyoxyethylene compounds, polyethylene glycol compounds are preferable.

Further, among the polyethylene glycol compounds, a polyethylene glycol compound is preferable, and a polyethylene glycol containing a crystallization controlling factor is particularly preferable. Here, the crystallization control factor means an organic residue existing in the molecular chain or at the terminal and disturbing the symmetry of the repeating unit of polyethylene glycol. What is crystallization control?
It means that the melting point obtained by differential scanning calorimetry (DSC, temperature rising condition 16 ° C./min) is lower than the melting point of polyethylene glycol having the same molecular weight.

The proportion of copolymerization of the hydrophilic compound (A) is not particularly limited, but from the viewpoint of spinnability, it is preferably 40 to 99% by weight based on the total weight of the polymer. Most of these compounds are preferably copolymerized in the polyester, but some of them may be present in a dispersed state in the polymer. The polar group-containing compound (B) contained in the copolyester (D) is not particularly limited, but a compound having a polar group represented by the following general formula [2] is preferable.

[0017]

(However, Y _i = amino group, sulfone group,
One or more polar groups selected from derivatives such as a carboxyl group, a hydroxyl group, an amide group and a phosphone group, i = 1 or an integer of 1 or more, R ₁ = organic residue, X = ester forming group, n =
It is an integer of 1 or more. Here, the term “containing” means a state of being dispersed or copolymerized in polyester, and particularly preferably copolymerized. As the compound, a compound having a sulfonate group is particularly preferable.

By containing such a polar group-containing compound, not only the hygroscopicity of the polymer is further increased, but also hydrogen bond or ionic mutual bond action is generated in the polymer, and when it is formed into a fiber, It is possible to obtain the effect that changes in physical properties are less likely to occur. Further, from the viewpoint of preventing the occurrence of thread breakage and making it less likely to change over time, the content of the polar group-containing compound (B) is 0 to 50 mol% with respect to the acid component constituting the whole polymer, Further 2
It is preferably 15 mol%.

The cross-linking agent (C) contained in the copolyester (D) is not particularly limited as long as it is a compound which reacts with the polyester to form a cross-linked structure, but the following general formula [3] It is preferable to use a polyfunctional compound represented by

[0021]

(However, R ₃ = hydrogen or acetyl group, R ₂ = organic residue having a valence of 3 to 6, R ₄ = hydrogen or alkyl group, 3 ≦ m + n ≦ 6.) Here, the content means It refers to a state of being dispersed or copolymerized in polyester, and it is particularly preferable to take a crosslinked structure by copolymerization.

The compound is preferably a polyfunctional carboxylic acid such as trimellitic acid or pyromellitic acid, or a polyol such as glycerin, trimethylolpropane or pentaerythritol, with trimellitic acid being particularly preferred. By including such a cross-linking agent (C), not only the moisture absorption rate of the polymer is further increased, but also the cross-linking structure is formed in the polymer, so that the physical properties of the fiber change with time. The effect of becoming difficult is obtained.

The proportion of the cross-linking agent (C) is preferably 0 to 30 mol%, more preferably 2 to 10 mol%, based on the acid components constituting the whole polymer. When the content is in such a range, the hygroscopicity is kept high, the spinnability becomes good, and the fiber physical properties such as strength are improved, which is preferable. In the present invention, at least one of the polar group-containing compound (B) and the crosslinking agent (C) may be contained in the copolyester (D). Of course, it is more preferable to include both the polar group-containing compound (B) and the crosslinking agent (C).

The copolymerized polyester (D) may contain pigments such as titanium oxide and carbon black, surfactants such as alkylbenzene sulfonates, various antioxidants, and coloring agents as long as the object of the present invention is not impaired. It does not matter if an inhibitor, a light stabilizer, an antistatic agent or the like is added. Next, among the hygroscopic polymers constituting the hygroscopic polyester fibers of the above two examples, the polyether ester amide (E) or the polyether ester amide mentioned as another example and another thermoplastic resin (F) The mixture will be described.

The polyether ester amide (E) is
A block copolymer having an ether bond or an ester bond in the same molecular chain. More specifically, one or more polyamide-forming components (G) selected from lactams, aminocarboxylic acids, salts of diamines and dicarboxylic acids, and polyethers composed of dicarboxylic acids and poly (alkylene oxide) glycols. A block copolymer polymer obtained by polycondensing the ester-forming component (H) can be preferably used.

As the polyamide-forming component (G) of the polyether ester amide, lactams, ω-aminocarboxylic acids, nylon salts and the like can be used, and these can be used alone or in admixture of two or more. it can.
Preferred polyamide-forming component (G) is ε-caprolactam, nylon 66 salt. On the other hand, the polyether ester-forming component (H) constituting the soft segment of the polyether ester amide (E) is composed of a dicarboxylic acid having 4 to 20 carbon atoms and poly (alkylene oxide) glycol.

As the dicarboxylic acid having 4 to 20 carbon atoms,
Aliphatic or aromatic dicarboxylic acids, alicyclic dicarboxylic acids and the like are used, and these can be used alone or in combination of two or more. Preferred dicarboxylic acids include polyamides such as adipic acid and seba polyglycine, polyesters, general-purpose thermoplastic resins such as polyolefins such as cinnamic acid, decadic acid, terephthalic acid and isophthalic acid.

The poly (alkylene oxide) glycol may be polyethylene glycol, poly (1,2).
-And 1,3-propylene oxide) glycol, polytetramethylene oxide glycol, polyhexamethylene oxide glycol, random or block copolymerization of ethylene oxide and propylene oxide, or tetrahydrofuran can be used, and polyethylene glycol is particularly preferable. The number average molecular weight of poly (alkylene oxide) glycol is 300 to 1000.
It can be used in the range of 0, preferably 500 to 4000.

The polyetheresteramide block copolymer can be obtained by polycondensing the above-mentioned polyamide-forming component (G) and polyetherester-forming component (H). Examples of the thermoplastic resin (F) mixed with the polyether ester amide include nylon 6
6, one or more of polyamides such as nylon 6, polyesters, and polyolefins. In particular, nylon 66, nylon 6, and modified polyethylene terephthalate obtained by copolymerizing a sulfonate compound are preferable because they have good compatibility with the polyether ester amide, can be finely dispersed with each other, and have little swelling with hot water.

Here, as a preferable sulfonate compound as the copolymerization component of the modified polyester, 5-sodium sulfoisophthalic acid, 5- (tetraalkyl) phossonium sulfoisophthalic acid and their ester derivatives, p-hydroxyethoxybenzenesulfonic acid are used. Sodium, potassium 2,5-bis (hydroxyethoxy) benzenesulfonate and the like can be used.

The copolymerization amount of this sulfonate compound is 0.1 to the acid component in consideration of the compatibility with the polyether ester amide and the physical properties of the resulting blend fiber.
It is preferably 7 mol%, more preferably 0.5 to 5 mol%. The mixing ratio of the polyether ester amide and the thermoplastic resin (F) is 5 from the viewpoint of obtaining a sufficient hygroscopic property and preventing cracking of the fiber surface due to swelling in a hot water atmosphere such as a dyeing process. ~ 50% by weight, further 10-40
% By weight is preferred.

In the present invention, the above-mentioned copolymerized polyester (D) or the polyether ester amide (E) or a mixture of the polyether ester amide and another thermoplastic resin (F) is used as a composite component or a blend component as a composite fiber. Alternatively, the fiber-forming polymer (X) used in combination with the blended fiber is not necessarily limited, but, for example, polyolefin such as polyethylene or polypropylene can be used, and nylon 6,
Polyamide such as nylon 66 can be used, and polyester such as polyethylene terephthalate or polybutylene terephthalate can be used. Among these, it is preferable to use polyester having polyethylene terephthalate as the main component, which is the most versatile as the synthetic fiber for clothing.

The form of the composite fiber is not particularly limited, but a core-sheath type composite fiber comprising a core portion 1 and a sheath portion 2 as shown in FIG. 1, and a core portion 1, a sheath portion 2 and a hollow as shown in FIG. Core-sheath type composite hollow fiber composed of a portion 3 and an island portion 1a and a sea portion 2 as shown in FIG.
A sea-island type composite fiber composed of a and a bonded type composite fiber in which the bonded portions 1b and 2b are bonded together as shown in FIG. 4 can be used.

For example, in the case of the core-sheath type composite fiber as shown in FIG. 1 and the core-sheath type composite hollow fiber as shown in FIG. 2, the core portion 1 has a copolyester (D) and a polyether. A hygroscopic polymer such as a mixture of an ester amide (E) or a polyether ester amide and another thermoplastic resin (F) is used, and a fiber-forming polymer (X) is used for the sheath 2.

The composite ratio (% by weight) in this case is as follows:
Core / sheath = 5/95 to 90/10 is preferable, and further 1
0/90 to 30/70 is preferable. The lower limit of the composite ratio is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit is appropriately set from the viewpoint of preventing deterioration of spinnability and deterioration of fiber physical properties. The core-sheath type composite fiber may have either a concentric circle shape or an eccentric circle shape in cross section, and the fiber shape may be circular, or various irregular cross sections such as polygonal shape and H shape. .

In the case of the sea-island type composite fiber shown in FIG. 3 and the laminated type composite fiber shown in FIG. 4, the copolyester (D) and the polyether are added to the island portion 1a or one of the laminated portions 1b. Ester amide (E) or polyether ester amide and other thermoplastic resin (F)
And a fiber-forming polymer (X) for the sea part 2a or the other bonded part 2b.
Use

In this case, the hygroscopic property of the fiber-forming polymer (X) such as the copolyester (D), the polyether ester amide (E) or a mixture of the polyether ester amide and another thermoplastic resin (F). The polymer composite ratio is preferably 5 to 90% by weight, more preferably 10 to 90% by weight.
30% by weight is preferred. The lower limit of the composite ratio is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit is set from the viewpoint of preventing deterioration of spinnability and fiber physical properties.

In the case of blended fibers, fiber formation of hygroscopic polymers such as copolyester (D), polyether ester amide (E) or a mixture of polyether ester amide and other thermoplastic resin (F). The compounding ratio with respect to the polymer (X) is preferably 3 to 80% by weight, more preferably 7 to 30% by weight, based on the total amount of the polymer. The lower limit of the compounding ratio is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit is set from the viewpoint of preventing deterioration of spinnability and fiber physical properties.

The above-mentioned copolyester (D) may contain other resins such as polyolefin, polyamide, polyester and polycarbonate as long as the hygroscopic effect is not impaired. Further, the fiber-forming polymer (X) is added with pigments such as titanium oxide and carbon black, conventionally known antioxidants, anti-coloring agents, light-proofing agents, etc. within a range that does not impair the object of the present invention. It doesn't matter.

The antistatic / hygroscopic fiber structure of the present invention is characterized in that the hygroscopic polyester fiber described above is provided with a quaternary ammonium salt represented by the general formula [1]. . As described above, the form of the hygroscopic polyester fiber when treated with the treatment liquid containing the quaternary ammonium salt may be a raw yarn such as a filament or staple, or is represented by a woven or knitted fabric or a non-woven fabric. It may be a fiber structure.

In the present invention, the antistatic agent used for treating the hygroscopic polyester fiber is a quaternary ammonium salt having a chemical structure as shown in the general formula [1], and R
₁ is an alkyl group having 8 to 18 carbon atoms such as octyl, nonyl, decyl, dodecyl, tetradecyl, pentadecyl, octadecyl and the like, and particularly the antibacterial activity becomes insufficient when the carbon number is 19 or more.

In the general formula [1], R _{2 to} R ₄ are methyl or ethyl alkyl groups having 1 or 2 carbon atoms. When the number of carbon atoms is 3 or more, the viscosity is increased, which is not preferable in production, and the solubility in water is low. On the other hand, when the number of carbon atoms is 0, that is, -H, ammonia gas is generated and ammonia salts are lost. Further, in the general formula [1], R ₅ is —H or —CH ₃ . Those having 2 or more carbon atoms are generally difficult to obtain.

N is 1 or 2. That is, since the phosphorus atom is pentavalent and the divalent oxygen is occupied by oxygen, the remaining trivalent is divided between the hydroxyl group and the specific organic group having a double bond in the general formula. When n is 0, the anion becomes a phosphate ion, and the functional group containing a double bond is lost, so that radical polymerization is less likely to occur and durability is lost. On the other hand, when n is 3, there is no hydroxyl group bonded to the phosphorus atom, and there is no quaternary ammonium salt.
Antistatic performance is significantly reduced. As the anion used in the quaternary ammonium salt group, a compound represented by the following general formula [4] is used.

[0045]

In the present invention, a part of the compound of the general formula [4] is replaced with a polyfunctional monomer such as polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, tetramethylolmethane tetraacrylate, trimethylolpropane trimethacrylate, etc. You can also

In the present invention, the quaternary ammonium salt of the general formula [1] is 0.02% owf or more and less than 2% owf with respect to the hygroscopic polyester fiber or the structure thereof.
Preferably 0.03% owf to 0.5% owf is contained. When the content is less than 0.02% owf,
Excellent anti-static performance cannot be given, while 2% o
If it is wf or more, the limiting performance is saturated.

As the polymerization initiator used in the present invention, a usual radical polymerization initiator can be used. For example, inorganic polymerization initiators such as ammonium persulfate, potassium persulfate and hydrogen peroxide, 2,2'-azobis (2-amidinopropane) dihydrochloride, 2,2'-
Azobis (N, N'-dimethyleneisobutyramidin)
Examples include organic polymerization initiators such as dihydrochloride and 2- (carbamoylazo) isobutyronitrile. Further, a water-insoluble polymerization initiator such as benzoyl peroxide or azobisisobutyronitrile may be emulsified with a surfactant such as anion or nonion before use.

The antistatic finishing agent is an amphoteric reaction product, has a high compatibility, and can be used in combination with other chemicals, and if necessary, a softening agent, a hard finish, a water repellent, a water absorbing agent in the treatment bath. Etc. can also be used together. In addition, when used in combination with a melamine compound or a urethane resin, it is possible to impart more excellent antistatic performance. Especially for those with low basis weight,
It is preferable to use a melamine compound and a urethane resin together. Examples of the melamine-based compound include the following general formula [5]
Can be mentioned.

[0050]

In the formula, R _{0 to} R ₂ : --H, --OH, --C ₆ H
_{5, C n H 2n + 1} (n = 1~10), - COOC n H
_{2n + 1 (n = 1~20)} , - CONR 3 R 4, -NR 3 R 4
_{(R 3, R 4: -H} , -OH), - OC n H 2n + 1, -CH
_{2 OC n H 2n + 1,} -CH 2 COOC n H 2 n + 1 (n = 1~2
_{0), - CH 2 OH,} -CH 2 CH 2 OH, -CONH 2,
_{-CONHCH 2 OH, -O (X-} O) n R 5 (X: -C
_{2 H 4, -C 3 H 6} , -C 4 H 8, n = 1~1500,
_{R 5: -H, -CH 3,} -C 2 H 5, -C 3 H 7) The most preferred compounds among the above-mentioned general formula [5] R _0, R ₁ is -
NR ₃ R _{4 wherein} R ₂ is —C
Those which are ONR ₃ R ₄ and —NR ₃ R ₄ are more preferable.
Further, R ₃ and R ₄ are —CH ₂ OH, —CH ₂ CH ₂ OH,
-CONH _2, compound a -CONHCH ₂ OH is particularly preferred. Needless to say, these compounds are only examples, and compounds and derivatives other than the above may be used. The melamine compound has at least 2 polymerizable functional groups.
It is preferable to have one because it improves the durability of the resin coating formed on the fiber surface.

Examples of urethane resins include resin types that are commonly used in post-processing in order to impart to synthetic fibers one of various properties, such as water repellency, oil repellency, antistatic property, water absorbency, and the like. There are two types of monomer types. Any of these can be applied to the present invention, but a monomer type is preferably applied from the viewpoint of durability.
Hereinafter, as an example of the urethane resin-based processing agent of the present invention,
The antistatic urethane resin processing agent will be described as a representative.

The antistatic urethane resin processing agent is a polymer composed of a compound having a functional group having antistatic properties and having at least two isocyanate groups. Examples of the functional group having such antistatic property include a polyalkylene glycol unit (group) and a quaternary ammonium base. In the present invention, as a method for applying the quaternary ammonium salt, any method such as dipping treatment, spraying treatment, foaming treatment and gravure treatment can be selected. After being incorporated into the hygroscopic polyester fiber by any method, a dry heat treatment is performed at a temperature of 100 to 210 ° C. through a normal drying step.

As the dry heat treatment, it is possible to employ a tenter one-step finish in which drying and setting are simultaneously performed, and therefore it is economically preferable to perform the treatment at the time of ordinary finish setting. Even if the heat treatment is performed at less than 100 ° C, sufficient antistatic performance can be obtained after the treatment, but it is not sufficient in terms of washing durability. On the other hand, if the temperature exceeds 210 ° C., there is a problem of yellowing and brittleness of the fibers, which is not practically preferable.

In the production method of the present invention, after applying the quaternary ammonium salt, the dry heat treatment is performed until 50.
Incorporation of a dry heating step at a temperature of not less than 150 ° C. and not more than 150 ° C., or a steaming treatment does not hinder the effects of the present invention.

[0056]

EXAMPLES The performance evaluation used in the examples described below was performed by the following method. A. Washing Automatic reversal spiral electric washing machine (Toshiba (manufactured); VH-11
The same performance as 50), 500g of 45 × 45cm test cloth
And 0.2% slightly alkaline synthetic detergent at 40 ± 2 ° C (JIS
25 liters of K 8371 weakly alkaline, type 1 solution was added, and the cloth was washed under strong conditions for 25 minutes. Next, after dehydration for 30 seconds using a centrifugal dehydrator, rinsing was performed for 10 minutes while allowing room temperature water to overflow. Then, dehydration is performed again for 30 seconds, followed by rinsing for 10 minutes under the same conditions, and the above method is repeated 5 times. In the present invention, this was repeated 6 times and washed 30 times.

B. Antistatic property: Friction electrification voltage and half-life Measuring machine: Rotary static tester (Kyoto Kaken type, manufactured by Koa Shokai) Target cloth: Cotton wire width 3 Temperature / humidity: 20 ° C × 30% RH Rotation speed: 400r.pm The electrification voltage (friction electrification voltage) after 1 minute of rotation was measured, and the time until the electrification voltage dropped to half (half-life) was measured.

C. Adhesion amount of resin {(weight of cloth after processing-weight of cloth before processing) / (weight of cloth before processing)} × 100 [%] The weight of cloth here means the environment of 20 ° C. and 65% RH. It means the weight when left for 24 hours.

D. Moisture absorption and desorption parameter ΔMR Using 1 to 3 g of cloth, the weight at absolute dryness and 20 ° C x 65% R
From the weight change with the weight after standing for 24 hours in a commercially available constant temperature and humidity chamber under an atmosphere of H or 30 ° C. × 90% RH,
Calculate the moisture absorption rate by the following formula and calculate ΔM from this moisture absorption rate by the following formula.
R was determined.

Moisture absorption rate = [(weight after moisture absorption−weight in absolute dry) / weight in absolute dry] × 100 Moisture absorption rate MR ₁ and 30 ° C. × 90% RH under the above conditions of 20 ° C. × 65% RH From the moisture absorption rate MR _{2 under} the above condition, the moisture absorption rate difference ΔMR (%) = MR ₂ −MR ₁ was obtained. E. FIG. The texture is very soft when you grab the fabric.
It was evaluated in 5 grades: slightly hard, hard, and very hard.

As the test fabrics in the examples, the following 5
I made and used types. Test material A 194 parts of dimethyl terephthalic acid, ethylene glycol 1
35 parts, dimethyl 5-sodium sulfoisophthalate 2
After adding 6.6 parts, 7.5 parts of trimethyl trimellitate and 0.1 part of tetrabutyl titanate and conducting an ester exchange reaction, 328 parts of polyethylene glycol having a molecular weight of 4000 was added and polymerization was carried out to obtain a copolyester ( D) was obtained.

The copolymerized polyester (D) thus obtained is used as a core component and polyethylene terephthalate (X).
Of 50 denier, 18 filaments (for warp yarns) and 75 denier, 36 filaments (for weft yarns) in which the copolyester (D) accounts for 20% by weight of the total weight of the fibers by using as a sheath component. Got Using this composite fiber, a plain weave having a vertical density of 106 fibers / inch and a horizontal density of 84 fibers / inch was woven and refined, dry heat set, dyed and dried.

Test Fabric B Test fabric A was obtained in which the copolymerized polyester was 3% by weight based on the total weight of the fiber. Test material C ε-caprolactam 340 parts, terephthalic acid 18 parts, and polyethylene glycol 100 parts having a molecular weight of 1000 were added and polymerized to give a polyether ester amide block copolymer (D) in which the proportion of N6 component was 45 wt%. Obtained.

70 parts by weight of the polyether ester amide block copolymer (D) thus obtained and 5
-30 parts by weight of modified polyethylene terephthalate copolymerized with 2.0 mol% of sodium sulfoisophthalic acid was blended in a chip state to form a core component, and polyethylene terephthalate (X) was used as a sheath component. A concentric concentric sheath composite fiber having 50 denier, 18 filaments (for warp yarn) and 75 denier, 36 filaments (for weft yarn) in which the polymer was 20% by weight based on the total weight of the fiber was obtained.

Using this composite fiber, the vertical density is 106
A flat woven fabric having a book / inch and a horizontal density of 84 / inch was woven, smelted, set with dry heat, dyed, and dried. Test Dough D A test fabric C was obtained in which the polyether ester amide block copolymer was 3% by weight based on the total weight of the fiber.

Test Material E Using a 100% polyester multifilament,
A plain weave having a vertical density of 106 fibers / inch and a horizontal density of 84 fibers / inch was woven, smelted, dry heat set, dyed and dried. Example 1 The test fabrics A and C were immersed in a treatment liquid having the following composition, squeezed with a mangle, and subjected to dry heat treatment at 160 ° C. for 1 minute with a pin tenter for evaluation.

The results are shown in Table 1. -Antistatic agent Quaternary ammonium salt represented by the general formula [1] 1% Catalyst: V-50 (manufactured by Wako Pure Chemical Industries, Ltd.) 0.05% -Melamine resin Sumitex Resin M-3 (Sumitex Resin M-3) (Sumitomo Chemical Co., Ltd.) 0.4% Catalyst: Sumitex Accelerator ACX (Sumitomo Chemical Co., Ltd.) 0.24% ・ Urethane resin Elastron W-11 (Daiichi Kogyo Seiyaku Co., Ltd.) )) 1.5% Catalyst: Catalyst 64 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 0.18% Water 96.63% Total 100% Example 2 The test fabric A is pre-dyed, especially as a pretreatment. TO
10% owf of -SR-1 (manufactured by Takamatsu Yushi Co., Ltd.) was simultaneously adsorbed, the same treatment (160 ° C x 1 minute dry heat treatment) as in Example 1 was performed, and the evaluation was performed.

The results are also shown in Table 1. Comparative Example 1 Each of the test fabrics B, D and E was subjected to the same treatment as in Example 1 to prepare a sample. The results are shown in Table 1.

Comparative Example 2 Sample fabrics A, B, C, D, and E were dipped in a treatment solution having the following composition, then squeezed with a mangle to obtain 160 ° C. with a pin tenter.
It was subjected to a dry heat treatment for 1 minute and provided for evaluation. The results are shown in Table 1. Antistatic agent: Evaphanol AS-47 (Nichika Chemical Co., Ltd.) 3% Catalyst: NK Catalyst CS (Nikaka Chemical Co., Ltd.) 0.3% Water: 96.7% Total 100%

[0070]

[Table 1]

From the results shown in Table 1, the hygroscopic polyester fiber alone is not sufficient in antistatic property, but the fabric (fiber structure) of the present invention further treated with the quaternary ammonium salt is
It can be seen that, while maintaining a soft texture, it exhibits sufficient anti-static properties with sufficient durability against washing.

[0072]

As described above, according to the present invention, an antistatic / hygroscopic fiber structure having excellent durability and antistatic / hygroscopic properties and capable of providing a soft texture is provided. Can be obtained.

[Brief description of drawings]

FIG. 1 is a model diagram illustrating a cross section of a core-sheath type composite fiber used in the present invention.

FIG. 2 is a model diagram illustrating a cross section of a core-sheath type composite hollow fiber used in the present invention.

FIG. 3 is a model diagram illustrating a cross section of a sea-island type composite fiber used in the present invention.

FIG. 4 is a model diagram illustrating a cross section of a laminated conjugate fiber used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core part 2 Sheath part 1a Island part 2a Sea part 1b, 2b Lamination part 3 Hollow part

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location D06M 15/59 D06M 15/59 13/46 14/08

Claims (5)

[Claims] 1. A polyester fiber having hygroscopicity,
The quaternary ammonium salt represented by the general formula [1] is 0.0
Antistatic / hygroscopic fiber structure with 2 to 2% owf applied. (However, R ₁ : an alkyl group having 8 to 18 carbon atoms, R ₂ to
R _4: an alkyl group having 1 to 2 carbon atoms, R _5: -H or -
CH ₃ , n: 1 or 2) 2. A composite fiber or blend in which the hygroscopic polyester fiber copolymerizes a hydrophilic compound and contains 5% by weight or more of a copolymerized polyester containing a polar group-containing compound and / or a crosslinking agent. The antistatic / hygroscopic fiber structure according to claim 1, which is a fiber. 3. The composite fiber or blend fiber according to claim 1, wherein the hygroscopic polyester is 5% by weight or more of a polyether ester amide or a mixture of a polyether ester amide and another thermoplastic resin. Anti-static / hygroscopic fiber structure. 4. A method for producing an antistatic / hygroscopic fiber structure, which comprises applying an aqueous solution of a quaternary ammonium salt represented by the general formula [1] to a hygroscopic polyester fiber, and then subjecting the polyester fiber to a dry heat treatment. . (However, R ₁ : an alkyl group having 8 to 18 carbon atoms, R ₂ to
R _4: an alkyl group having 1 to 2 carbon atoms, R _5: -H or -
CH ₃ , n: 1 or 2) 5. The temperature in the dry heat treatment is 100 to 2
The method for producing an antistatic / hygroscopic fiber structure according to claim 4, wherein the temperature is 10 ° C.