JPH09228246A - Moisture-absorbing antibacterial deodorizing fiber structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a moisture-absorbing antibacterial deodorizing fiber structure having lasting moisture-absorbing, antibacterial and deodorizing actions and exhibiting soft feeling. SOLUTION: This fiber structure is composed of a polyester fiber having a moisture absorbing and desorbing parameter ΔMR of >=1% and containing 0.02-0.1%owf of a quaternary ammonium salt of formula (R1 is a 12-16C alkyl; R2 , R3 and R4 are each a 1-2C alkyl; Bu is butyl).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a polyester-based hygroscopic / antibacterial / deodorant fiber structure. More specifically, it has excellent hygroscopicity and antibacterial and deodorant properties for washing durability,
Moreover, the present invention relates to a moisture absorbing / antibacterial / deodorant fiber structure having a soft texture.

[0002]

2. Description of the Related Art Polyester synthetic fibers have excellent physical and chemical properties such as morphological stability, mechanical strength, chemical resistance, heat resistance and washing durability, and are therefore widely used for clothing. Has been done. However, on the other hand, it has a drawback that it tends to get stuffy when worn and is easily charged due to its low hygroscopicity. In addition, if sweat or dirt adheres to the surface of the fiber due to stuffiness during wearing, bacteria may proliferate using these as a nutrient source and generate an unpleasant odor.

As a measure against such a problem, for example, a radical-polymerizable hydrophilic monomer is added to polyester fibers and polymerized on the fibers, and then treated with an aqueous solution of an antibacterial compound to obtain hygroscopicity and antibacterial properties. There has been proposed a method of imparting the above (Japanese Patent Laid-Open No. 59-150174).
However, since all of these conventional methods have a rough texture or insufficient washing durability, they combine excellent hygroscopicity and antibacterial properties with excellent washing durability while maintaining a soft texture. There was a drawback that it was difficult to do.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fiber structure which has both excellent hygroscopicity and excellent antibacterial and deodorant properties and excellent softness and durability.

[0005]

Means for Solving the Problems The moisture-absorbing / antibacterial deodorant fiber structure of the present invention which achieves the above-mentioned subject is made of a polyester fiber having a moisture absorption / release parameter ΔMR of 1% or more. Fourth represented by formula [1]
It is characterized by containing 0.02 to 0.1% owf of a primary ammonium salt.

[0006]

(However, R ₁ is an alkyl group having 12 to 16 carbon atoms, R ₂ , R ₃ and R ₄ are alkyl groups having 1 to 2 carbon atoms, and Bu is a butyl group.) More preferably, the above polyester The system fiber is a composite fiber or a blend fiber containing 5% by weight or more of a copolymerized polyester containing a polar group-containing compound and / or a cross-linking agent as well as a hydrophilic compound.
Alternatively, it is a composite fiber or a blend fiber containing 5% by weight or more of a polyether ester amide or a mixture of a polyether ester amide and another thermoplastic resin.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The polyester fiber in the present invention is not particularly limited as long as it is a fiber containing a polyester component having a moisture absorption / release parameter ΔMR of 1% or more. Moisture absorption / desorption parameter ΔMR is 1
If it is less than%, the hygroscopicity is low and it is difficult to prevent stuffiness and stickiness due to sweating from the skin. The moisture absorption / release parameter ΔMR is more preferably 1.5 to 10%, and particularly preferably 3 to 10%, from the viewpoints of comfort when worn, yarn-forming property, weaving property and knitting property. .

Further, the polyester fiber of the present invention preferably has a moisture absorption / release parameter ΔMR after 5 times of washing as 70% or more of that before washing as a washing durability regarding hygroscopicity. In the present invention, the moisture absorption / release parameter ΔMR is the moisture absorption rate MR _{2 at} 30 × 90% RH and 20 ° C. ×
It is expressed as a difference from the moisture absorption rate MR _{1 at} 65% RH and is a value obtained from the equation ΔMR (%) = MR ₂ −MR ₁ . The moisture absorption / desorption parameter ΔMR is used as a scale for evaluating the hygroscopicity in the present invention. The larger the moisture absorption / desorption parameter ΔMR, the higher the moisture absorption capacity, and the better the wearing comfort when worn as clothes. It means that there is.

Polyester fibers having the above moisture absorption / release parameter ΔMR include spinnability, weavability, dyeability,
From the viewpoint of durability of yarn performance and the like, the following two types can be mentioned as preferable fibers. That is, a copolymerized polyester obtained by copolymerizing a hydrophilic compound (A), wherein the copolymerized polyester contains at least one of a polar group-containing compound (B) and a crosslinking agent (C) ( D) 5% by weight
The composite fiber or the blended fiber containing the above, or the composite fiber or the blended fiber containing 5% by weight or more of the polyether ester amide (E) or a mixture of the polyether ester amide and another thermoplastic resin (F).

The polyester fibers will be specifically described below. First, for the former fiber containing the copolyester (D), the hydrophilic compound (A) as the copolymerization component is preferably a compound containing at least one ester-forming group, but is not particularly limited. ,
As typical compounds, polyoxyalkylene compounds, polyoxazolines, polyacrylamide and its derivatives, etc. can be used. Among them, polyoxyalkylene compounds, and further polyoxyethylene compounds are preferable.

Further, among the polyoxyethylene compounds, polyethylene glycol compounds are preferable, and 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. Crystallization control means that the melting point determined by differential scanning calorimetry (DSC, temperature rising condition 16 ° C./min) is lower than that of polyethylene glycol having the same molecular weight.

The molecular weight of the hydrophilic compound (A) is 600 to 20,000, more preferably 2000 to 60, from the viewpoint of compatibility with polyester and dispersibility in polyester.
00 is preferred. In addition, the hydrophilic compound (A)
The copolymerization ratio of is not particularly limited, but is preferably 40 to 99 wt% with respect to the total polymer weight from the viewpoint of spinnability.

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 copolymerized polyester (D) is not particularly limited, but a compound having a polar group represented by the following general formula [2] is preferable.

Y _i —R ₁ —X _n [2] (where Y _i = one or more polarities selected from derivatives such as amino group, sulfone group, carboxyl group, hydroxyl group, amide group and phosphon group) Base, an integer of i = 1 or more,
R ₁ = organic residue, X = ester-forming group, and n = 1 or 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 (B), not only the hygroscopicity of the polymer is further increased, but also hydrogen bond and ionic mutual bond action are generated in the polymer, and when the fiber is formed, it is aged. It is possible to obtain the effect that changes in physical properties hardly occur. The content of the polar group-containing compound (B) is from 0 to 50 mol%, and further from the viewpoint of preventing the occurrence of yarn breakage and making it less likely to change over time. It is preferably from 2 to 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 (R ₃ O) _n R ₂ (COOR ₄ ) _m [3] (where R ₃ = hydrogen or acetyl group, R ₂ = 3 to
Hexavalent organic residue, R ₄ = hydrogen or alkyl group, 3 ≦
It shows m + n ≦ 6. Here, the term “containing” means a state of being dispersed or copolymerized in polyester, and it is particularly preferable that the crosslinked structure is formed by copolymerization. As the compound, polyfunctional carboxylic acids such as trimellitic acid and pyromellitic acid, and polyols such as glycerin, trimethylolpropane, and pentaerythritol are preferable, and trimellitic acid is particularly preferable.

By containing such a cross-linking agent (C), not only the moisture absorption rate of the polymer further increases, but also a cross-linking structure is formed in the polymer, and when the fiber is formed, the change of physical properties with time occurs. The effect of being difficult is obtained. The mixing ratio of the cross-linking agent (C) is preferably 0 to 30 mol%, and more preferably 2 to 10 mol% with respect to the acid components constituting the entire polymer. By setting the content in such a range, the hygroscopicity is kept high, the spinning property is improved, and the fiber properties such as strength are improved.

The polar group-containing compound (B) and the cross-linking agent (C) described above preferably contain at least one of the copolymerized polyesters (D), and more preferably the polar group-containing compound. (B) and crosslinking agent (C)
Both should be included. In addition, the copolyester (D) may be a pigment such as titanium oxide or carbon black, a surfactant such as alkylbenzene sulfonate, various antioxidants, and an anti-coloring agent as long as the effects of the present invention are not impaired. It does not matter if a light-proofing agent or an antistatic agent is added. Further, within the range that does not impair the effect, polyolefin, polyamide, polyester,
It may include polycarbonate and the like.

Next, the polyether ester amide (E) or the mixture of the polyether ester amide and the other thermoplastic resin (F) constituting the other polyester fiber will be described. Polyether ester amide (E) is an ether bond in the same molecular chain,
It refers to a block copolymer having an ester bond.

More specifically, one or more polyamide-forming components (G) selected from lactams, aminocarboxylic acids, salts of diamines and dicarboxylic acids, and dicarboxylic acids and poly (alkylene oxide) glycols. A block copolymer polymer obtained by polycondensation of the polyether 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 combination of two or more. it can.
Preferred polyamide-forming components are ε-caprolactam and nylon 66 salt. On the other hand, the polyether ester-forming component (H) constituting the soft segment of polyether ester amide has 4 to 20 carbon atoms.
The dicarboxylic acids and poly (alkylene oxide) glycols are preferred.

The dicarboxylic acid having 4 to 20 carbon atoms includes
The use of aliphatic, aromatic dicarboxylic acids, alicyclic dicarboxylic acids, etc. 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.

As the poly (alkylene oxide) glycol, polyethylene glycol and 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 polyetherester amide block copolymer is obtained by polycondensing the above-mentioned polyamide-forming component (G) and polyetherester-forming component (H). As the thermoplastic resin (F), for example,
One or more of polyamides, polyesters, and polyolefins such as nylon 66 and nylon 6 can be used. In particular, nylon 66, nylon 6,
Modified polyethylene terephthalate obtained by copolymerizing a sulfonate compound is preferable because it has good compatibility with the polyether ester amide, can be finely dispersed with each other, and has little swelling with hot water.

Here, as a preferable sulfonate compound as a copolymerization component of the modified polyester, 5-sodium sulfoisophthalic acid, 5- (tetraalkyl) phossonium sulfoisophthalic acid and ester derivatives thereof, p-hydroxyethoxybenzenesulfonic acid Sodium, potassium 2,5-bis (hydroxyethoxy) benzenesulfonate and the like can be used. The copolymerization amount of the sulfonate compound is 0.1 to 7 mol%, more preferably 0.5 to 5 mol based on the acid component, in view of the compatibility with the polyether ester amide and the physical properties of the resulting blend fiber. % Is preferred.

The mixing ratio of the polyether ester amide and the thermoplastic resin (F) is from the viewpoint of obtaining sufficient hygroscopicity and preventing cracking of the fiber surface due to swelling in a hot water atmosphere such as a dyeing process. It is preferably 5 to 50% by weight, more preferably 10 to 40% by weight. Fiber-forming property when the above-mentioned copolymerized polyester (D), or polyether ester amide (E) or a mixture of polyether ester amide and other thermoplastic resin (F) is made into a composite fiber or a blended fiber together therewith. As the polymer, polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6 and nylon 66, polyesters such as polyethylene terephthalate and polybutylene terephthalate can be used, but the present invention is not limited thereto. It is preferable to use polyester having polyethylene terephthalate as the main component, which is the most versatile, as a synthetic fiber for clothing.

Although the form of the composite fiber is not particularly limited, for example, a core-sheath type composite fiber comprising a core portion 1 and a sheath portion 1 as shown in FIG. 1 and a core portion 1 and a sheath portion 2 as shown in FIG. Core-sheath type composite hollow fiber composed of the hollow part 3 and the hollow part 3, sea-island type composite fiber composed of the island part 1a and the sea part 2a as shown in FIG. 3, and bonded type composite fiber composed of the bonded parts 1b and 2b as shown in FIG. Can be used.

For example, in the case of the core-sheath type composite fiber shown in FIG. 1 and the core-sheath type composite hollow fiber shown in FIG. 2, a copolyester (D), a polyether ester amide (E) or poly is used for the core. A fiber-forming polymer can be used for the sheath portion by using a mixture of ether ester amide and another thermoplastic resin (F). In this case, the composite ratio (wt%) is preferably core / sheath = 5/95 to 90/10, more preferably 10/90 to 30/70. The lower limit of the composite ratio may be determined from the purpose of giving sufficient hygroscopicity,
The upper limit may be determined from the viewpoint of preventing deterioration of spinnability and fiber physical properties. In addition, the core-sheath cross-sectional shape of the core-sheath composite yarn is
It may be concentric or eccentric, and the fiber cross section may be circular, polygonal, H-shaped, or other irregular cross section.

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), the polyether ester amide (E) or the polyether ester amide and other heat are used. A polymer having a hygroscopic property such as a mixture with a plastic resin (F) is used in the island portion or one of the laminated portions, and the composite ratio of these polymers to the fiber-forming polymer is 5 to 90% by weight,
More preferably, it is 10 to 30% by weight. The lower limit of the composite ratio may be determined from the purpose of imparting sufficient hygroscopicity, and the upper limit may be determined from the viewpoint of preventing deterioration of spinnability and deterioration of fiber physical properties.

Further, in the case of blended fibers (not shown), a copolyester (D), a polyether ester amide (E) or a polyether ester amide for a fiber-forming polymer and another thermoplastic resin (F) are used. The blending ratio of the mixture and the like is 3 to the total polymer weight.
It is 80% by weight, more preferably 7 to 30% by weight. The lower limit of the compounding ratio may be determined from the purpose of imparting sufficient hygroscopicity, and the upper limit may be determined from the viewpoint of preventing deterioration of spinnability and deterioration of fiber physical properties.

Further, to the fiber-forming polymer, pigments such as titanium oxide and carbon black, various antioxidants, anti-coloring agents, light-proofing agents and antistatic agents are added to the fiber-forming polymer within the range not impairing the object of the present invention. It does not matter if you The fiber structure of the present invention is the above-mentioned polyester fiber, and the fiber structure of the present invention is an antibacterial agent represented by the following general formula [1].
0.02-0.1% quaternary ammonium salt represented by
Contains owf. The form of the fibers at this time may be filaments, staple raw yarns, or any form of cloth such as woven or knitted fabrics and non-woven fabrics.

[0033]

(However, R ₁ is an alkyl group having 12 to 16 carbon atoms, R ₂ , R ₃ and R ₄ are alkyl groups having 1 to 2 carbon atoms, and Bu is a butyl group.) Used as an antibacterial agent As the quaternary ammonium salt represented by the above general formula [1], R ₁ has 12 to 16 carbon atoms.
Must be an alkyl group of If the carbon number is 11 or less, or 17 or more, sufficient antibacterial activity cannot be obtained. R ₂ , R ₃ , and R ₄ are alkyl groups having 1 to 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.

As the anion used for neutralizing the quaternary ammonium salt, an alkyl phosphate ion is selected in consideration of compatibility with the concomitant drug. Further, as the alkyl group, a carbon number of 4, that is, a butyl group can be selected. As the butyl group, n-butyl group, iso-butyl group, te
Any of the rt-butyl groups is preferably used. When the number of carbon atoms in the alkyl group is 3 or less, it is not preferable in terms of safety, and when the number of carbon atoms in the alkyl group is 5 or more, the viscosity becomes high and synthesis becomes difficult, and the number of alkyl groups is 1 or 2. Since it becomes a mixture of phosphate ions, it is not preferable in terms of safety.

In the present invention, the fourth one of the above general formula [1]
Ammonium salt 0.02 for polyester fiber
By containing 0.1 to 0.1% owf, antibacterial and deodorant performance with high washing durability can be obtained. When the content of the quaternary ammonium salt is less than 0.02% owf, sufficient washing durability as the object of the present invention cannot be obtained, and when it is more than 0.1% owf, the dye fastness is high. This is not practically preferable because it decreases.

This quaternary ammonium salt has good compatibility with other chemicals, and if necessary, may be used in the same bath as a softening agent, a hardener, an antistatic agent, a water repellent, a water absorbing agent, a moisture absorbing finishing agent. , Deodorant finishing agents, flame retardants, etc. can be added. Fourth above
Examples of the method of applying the ammonium salt to the polyester fiber include a dipping method, a padding method, a spray method, a coating method, a gravure processing, and a foam processing. For example, in the case of the padding method, a polyester fiber is dipped in the form of a raw yarn or a fiber structure in a treatment liquid containing a quaternary ammonium salt, squeezed with a mangle, and then dried,
Dry heat treatment may be performed at 10 ° C.

[0038]

EXAMPLES In the examples described below, the following five types of test fabrics were used. Test material A 194 parts of dimethyl terephthalic acid, ethylene glycol 1
35 parts, dimethyl 5-sodium sulfoisophthalate 2
6.6 parts, trimethyl trimellitate 7.5 parts, and tetrabutyl titanate 0.1 part were added, and after transesterification reaction, 328 parts of polyethylene glycol having a molecular weight of 4000 was added and polymerized to obtain a copolyester. Manufactured.

The copolymerized polyester thus obtained is used as a core component and polyethylene terephthalate as a sheath component, and the copolymerized polyester is 20% by weight of the total weight of the fiber, 50 denier, 18 filaments (for warp yarn) and 75 denier. , 36 filaments (for weft) were obtained. 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 then desizing and refining and dry heat setting were carried out by a usual method. Disperse dye Dianix Black BG-FS 200%
(Dystar Japan Co., Ltd.) 8.0% owf, acetic acid (80%) 0.5 cc / l, dispersant RAP-50 (Sanyo Chemical Co., Ltd.) 0.5 g / l in a bath of 130 ℃
It was dyed for 60 minutes, reduced and washed by a usual method, washed with hot water and dried.

Test fabric B The above-mentioned test fabric A having a copolyester content of 3% by weight based on the total weight of the fiber. A 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 produce a polyether ester amide block copolymer having an N6 component ratio of 45 wt%.

70 parts by weight of the polyether ester amide block copolymer thus obtained and 30 parts by weight of modified polyethylene terephthalate obtained by copolymerizing 2.0 mol% of 5-sodium sulfoisophthalic acid were blended in a chip state. As the core component, and polyethylene terephthalate as the sheath component, the polyether ester amide block copolymer becomes 20% by weight of the total fiber weight, 50 denier, 18 filaments (for warp yarn) and 75 denier, 36 filaments (for weft yarn) ), A concentric core / sheath composite fiber was obtained.

Using this composite fiber, the vertical density is 106.
After weaving a plain weave having a book / inch and a weft density of 84 / inch, the same dyeing process as the test fabric A was performed. Test Dough D In the above test Dough C, the polyether ester amide block copolymer was used in an amount of 3% by weight based on the total weight of the fiber.

Test Fabric E Using a 100% polyester multifilament,
After weaving a plain woven fabric having a vertical density of 106 fibers / inch and a horizontal density of 84 fibers / inch, the same dyeing process as that for the test fabric A was performed. In addition, each evaluation used in the examples was performed by the following measuring methods. [Moisture absorption / release parameter ΔMR] Using 1 to 3 g of the fiber structure, the weight at the time of absolute drying and 20 ° C × 65% RH or 30 ° C
The moisture absorption rate was determined by the following formula from the weight change after standing for 24 hours in a commercially available constant temperature and humidity chamber under an atmosphere of × 90% RH.

Moisture absorption rate (%) = [(weight after moisture absorption−weight in absolute dry) / weight in absolute dry] × 100 Moisture absorption rate MR measured under the conditions of 20 ° C. × 65% RH
_{From 1} and the moisture absorption rate MR _{2 under the} condition of 30 ° C. × 90% RH,
The moisture absorption difference obtained by the following formula was used as the moisture absorption / release parameter ΔMR. ΔMR (%) = MR ₂ −MR ₁ [antibacterial] The test method adopts a bacterial count method, and the test cells are Staphylococcus aureus.
ATTC6538p), the test method is to pour the broth suspension of the above-mentioned test bacteria into a sterilized sample cloth, and keep it at 37 ° C in a closed container.
The viable cell count was measured after 18 hours of culture. The measurement results were determined according to the following criteria.

Under the condition of log (B / A)> 2, log
(B / A) was defined as the difference in the number of bacteria increase / decrease, and the difference in the number of bacteria increase / decrease of 1.6 or more was regarded as the pass level. Here, A represents the number of inoculated bacteria, B represents the number of bacteria of the unprocessed product after culturing for 18 hours, and C represents the number of bacteria of the processed product after culturing for 18 hours. [Friction fastness] According to JIS L0849: Gakushin type method (wet, 200 g). [Washing] Automatic reversing spiral electric washing machine VH-3410
Detergent "Zab" (manufactured by Toshiba Corporation) (Kao Corporation)
0.2%, temperature 40 ± 2 ° C., bath ratio 1:50, wash for 5 minutes with strong inversion, and then repeat draining and rinsing for 2 minutes with overflowing twice. Let's do it. Example 1 In the general formula [1], 8% by weight of a quaternary ammonium salt type antibacterial agent in which R ₁ is C ₁₂ H ₂₅ and R _{2 to} R ₄ are CH ₃ is used.
The antibacterial processing agent A containing was produced.

The test fabrics A and C were dipped in a treatment liquid containing 0.25% by weight of the antibacterial finishing agent A, and the drawing ratio was 10
After squeezing at 0% and drying at 120 ° C., dry heat treatment was performed at 170 ° C. for 30 seconds. Example 2 The test fabrics A and C are 0.70 wt% of the antibacterial processing agent A.
Immerse it in the treatment liquid containing it and squeeze it with a squeezing ratio of 100%.
After drying at 20 ° C., dry heat treatment was performed at 170 ° C. for 30 seconds.

Example 3 Test fabrics A and C, antibacterial finishing agent A 1.20 wt%
Immerse it in the treatment liquid containing it and squeeze it with a squeezing ratio of 100%
After drying at 20 ° C., dry heat treatment was performed at 170 ° C. for 30 seconds. Comparative Example 1 0.18 wt% of the test materials A and C, the antibacterial processing agent A
Immerse it in the treatment liquid containing it and squeeze it with a squeezing ratio of 100%.
After drying at 20 ° C., dry heat treatment was performed at 170 ° C. for 30 seconds.

Comparative Example 2 The test fabrics A and C were mixed with the antibacterial processing agent A at 1.50 wt%.
Immerse it in the treatment liquid containing it and squeeze it with a squeezing ratio of 100%.
After drying at 20 ° C., dry heat treatment was performed at 170 ° C. for 30 seconds. Comparative Example 3 Using the test fabrics B, D and E, the same treatment as in Example 1 was performed. Comparative Example 4 The test fabrics A to E were not treated with the antibacterial finishing agent.

With respect to the cloths obtained in Examples 1 to 3 and Comparative Examples 1 to 4 described above, the moisture absorption / release parameter ΔM was obtained.
Table 1 shows the results of measurement of R, difference in increase / decrease in the number of bacteria, and friction fastness.

[0050]

[Table 1]

[0051]

According to the present invention, it is possible to obtain a hygroscopic / antibacterial / deodorant fiber structure having excellent hygroscopicity and antibacterial / deodorant property with excellent durability and having a soft texture.

[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 composite 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

Claims (3)

[Claims] 1. A polyester fiber having a moisture absorption / desorption parameter ΔMR of 1% or more, wherein the polyester fiber has a quaternary ammonium salt represented by the following general formula [1] of 0.1.
Moisture absorbing / antibacterial deodorant fiber structure containing 02 to 0.1% owf. (However, R ₁ is an alkyl group having 12 to 16 carbon atoms,
R ₂ , R ₃ and R ₄ represent an alkyl group having 1 to 2 carbon atoms, and Bu represents a butyl group. ) 2. The polyester fiber is a composite fiber or a blend fiber containing 5% by weight or more of a copolymerized polyester containing a hydrophilic compound and a polar group-containing compound and / or a crosslinking agent. The moisture absorbent / antibacterial deodorant fiber structure described in 1. 3. The moisture absorbing / antibacterial agent according to claim 1, wherein the polyester fiber is a composite fiber or a blend fiber containing 5% by weight or more of a polyether ester amide or a mixture of a polyether ester amide and another thermoplastic resin. Deodorant fiber structure.