TW201627555A - Fiber structure and production method for same - Google Patents

Abstract

Provided is a fiber structure that includes an elastic yarn comprising a polyurethane that uses a polymer diol and a diisocyanate as starting materials, and contains at least one alkyl diphenyl ether-based compound, and thus has excellent odor eliminating properties with respect to ammonia, acetic acid and the like, which are the primary components of sweat and body odor.

Description

Fiber structure and method of manufacturing same

The present invention relates to a fiber structure excellent in deodorant property, and to a method for producing a fiber structure having excellent deodorant properties.

Polyurethane-based elastic fibers are widely used in stretch garment applications such as stockings, underwear, sportswear, and swimwear, and industrial materials because of their excellent stretch characteristics. In recent years, in the search for a more comfortable living environment, there has been a demand for a fiber product for deodorizing an unpleasant odor such as sweat odor or aging odor, and various technical improvements have been proposed.

For example, a porous fine particle such as titanium dioxide or zeolite having a photocatalytic function is adhered to the surface of the fiber by a binder such as polyoxymethylene, etc., as a method of imparting the deodorant fine particles to the surface of the fiber. Document 1). However, in order to obtain high deodorizing performance and washing durability, it is necessary to use a large amount of deodorant fine particles, and further, a large amount of binder is required to adhere it to the fibers, which has a problem of impairing the texture of the fibrous product.

Further, as a method of improving a polymer constituting a fiber, it is proposed to graft-polymerize a polyester fiber with an ethylenically unsaturated organic acid. The partner or the like (Patent Document 2). However, the obtained fiber has a problem that the strength is gradually lowered by hydrolysis, and it is not practical to use it as a fiber product.

In addition, as a deodorizing component contained in the fiber, there is proposed a method of making β-isopropyl A ketone (hinokitiol) and a metal oxide and/or a composite metal oxide containing at least one element selected from the group consisting of Zn, Si, Cu, Ni, Fe, Al, and Mg, which are kneaded to agglomerate during dry spinning. A urethane elastic yarn (Patent Document 3). However, in the dyeing process, the deodorant component is detached, and the deodorizing performance cannot be maintained.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2000-54270

Patent Document 2: Japanese Laid-Open Patent Publication No. 2000-226767

Patent Document 3: Japanese Patent Laid-Open Publication No. 2002-105757

The present invention solves the problems of the prior art described above, and provides a fiber structure having an excellent deodorizing effect on ammonia, acetic acid, or the like which is a main component of sweat odor and odor of the elderly, and a method for producing the same.

In order to solve the above problems, the present invention adopts any of the following means.

(1) A fibrous structure comprising a polymer diol and The diisocyanate is an elastic yarn formed from a polyurethane of the starting material and contains at least one alkyl diphenyl ether compound.

(2) The fiber structure according to the above (1), wherein the alkyl diphenyl ether contained in the fiber structure is based on the mass of the elastic yarn formed of the polyurethane. The ratio of the mass of the compound is in the range of 0.1 to 100% by mass.

The fiber structure according to the above (1) or (2), wherein the alkyl diphenyl ether compound is an alkyl diphenyl ether sulfonic acid or an alkyl diphenyl ether sulfonate.

(4) The fiber structure according to any one of the above-mentioned (1), wherein the elastic yarn formed of the polyurethane contains a metal phosphate.

(5) The fiber structure according to any one of the above (1), wherein the metal phosphate is titanium phosphate and/or zirconium phosphate.

(6) A method for producing a fibrous structure, which is a fibrous structure comprising an elastic yarn formed of a polyurethane having a polymer diol and a diisocyanate as a starting material, simultaneously or at the time of dyeing After dyeing, at least one alkyl diphenyl ether compound is used for the bath treatment.

(7) A method for producing a fibrous structure, which comprises a fiber structure comprising an elastic yarn formed of a polymer diol and a diisocyanate-based polyurethane, using at least one alkyl group The diphenyl ether compound is subjected to a filling treatment.

According to the present invention, it is possible to provide a fibrous structure having excellent deodorizing performance against ammonia, acetic acid or the like which is a main component of sweat odor and odor of the elderly.

[Formation of the Invention]

Hereinafter, the present invention will be described in detail.

The fiber structure of the present invention comprises an elastic yarn formed of a polyurethane having a polymer diol and a diisocyanate as a starting material, and contains at least one alkyl diphenyl ether compound.

The fiber structure in the present invention may be any structure or shape, and examples thereof include a cloth, a belt, a rope, and a filament. It is preferable to use an article containing a cloth-like woven or non-woven fabric, or an article containing a composite material containing such a fiber structure.

The fiber structure of the present invention contains an elastic yarn formed of a polyurethane as described later, and may be a synthetic fiber, a regenerated fiber or a half as a fiber other than the elastic yarn formed of a polyurethane. Synthetic fibers, natural fibers, and the like. The elastic yarn formed of the polyurethane contained in the fibrous structure preferably contains 1% or more, more preferably 10% or more. It is preferably contained in an amount of 90% or less. However, it may be a fiber structure including only an elastic yarn formed of a polyurethane and containing no other fibers.

Examples of the synthetic fiber include a polyester fiber, a polyamide fiber, a polyethylene fiber, a polypropylene fiber, a polyvinyl alcohol fiber, a polyvinyl chloride fiber, and a polyacrylonitrile fiber. Examples of the polyester-based fiber include polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate, and examples thereof The third component such as isophthalic acid is copolymerized. Examples of the recycled fiber or the semi-synthetic fiber include hydrazine, acetate, and the like. Examples of the natural fiber include cotton, hemp, wool, and enamel. These fibers may be used in any of short fibers and long fibers, and may be used singly or in combination of two or more kinds as a mixed fiber, a blended fiber, or a composite processed yarn. In addition, it can be used as a composite processing of coating, air intermingle, merging, composite false twist or core yarn of elastic yarn composed of these synthetic fibers or natural fibers and polyurethanes. Silk to use.

The fibrous structure of the present invention is a compound comprising at least one alkyl diphenyl ether compound. As the alkyl diphenyl ether compound, those represented by the formula (1) are preferably used.

(wherein R ₁ and R ₂ are each independently an alkyl group having 1 to 20 carbon atoms. R ₃ and R ₄ are each independently an M having a selected from H, Na, K, Mg, and Ca. ₃ M. m and n are integers of 0 to 5, and any of n or m is 1 or more. p is an integer of 0 to (5-m), and q is an integer of 0 to (5-n).

In the formula (1), R ₁ and R ₂ each independently represent an alkyl group having 1 to 20 carbon atoms. Here, "independently" means that when m+n is 2 or more, the carbon number of each alkyl group may be completely different. When the alkyl group has a carbon number of 20 or less, it is preferred because it has good solubility in water.

Further, in the formula (1), each of R ₃ and R ₄ is independently -SO ₃ M having M selected from H, Na, K, Mg and Ca. Here, -SO ₃ M means a combination of SO ₃ - and a counter ion M, and when M is H, it means a sulfonic acid, and when M is any of Na, K, Mg, and Ca, it means sulfonic acid. salt. Further, "independently" means that when p+q is 2 or more, the M selected from H, Na, K, Mg, and Ca of each -SO ₃ M may be completely different.

In the formula (1), the alkyl group R ₁ and the alkyl group R _{2 may} be either linear or branched, and the alkyl group R ₁ and the alkyl group R ₂ may be substituted as long as the hydrogen of the benzene ring is substituted. Conditions can be placed anywhere.

The alkyl diphenyl ether compound is preferably substituted with a sulfonic acid or a sulfonic acid salt at any position of the benzene ring (that is, p + q of the general formula (1) is 1 or more). By having a sulfonic acid group, it is expected that a higher deodorizing effect can be obtained. R ₃ and R ₄ are the same as those described above for R ₁ and R ₂ , and may be at any position as long as the hydrogen of the benzene ring satisfies the conditions of substitution. Further, the total of p and q is more preferably 3 or less from the viewpoint of production efficiency.

The alkyl diphenyl ether compound of the present invention can be used alone or in combination of two or more.

The ratio of the mass of the alkyl diphenyl ether compound contained in the fiber structure of the present invention is preferably in the range of 0.1 to 100% by mass based on the mass of the elastic yarn formed of the polyurethane. . Here, the position including the alkyl diphenyl ether-based compound may be attached to the entire fiber structure or may be locally attached to the polyurethane. The elastic yarn formed. When the amount is less than 0.1% by mass, a sufficient deodorizing effect cannot be exhibited, and if it exceeds 100% by mass, the texture of the fiber structure is impaired. From the viewpoint of satisfying both the deodorizing effect and the texture, it is more preferably 5.0 to 70% by mass, still more preferably 10 to 50% by mass.

In the present invention, the polyurethane used in the polyurethane constituting the elastic yarn may be a polyurethane having a structure of a polymer diol and a diisocyanate. Any one is not particularly limited. Further, the synthesis method is also not particularly limited. That is, it may be, for example, a polyurethane urethane which is a raw material of a polymer diol, a diisocyanate and a low molecular weight diamine, or a polymer diol, a diisocyanate and a low molecular weight diol. Raw material polyurethane urethane.

In the present invention, the polymer diol compound means that the number average molecular weight (hereinafter also referred to simply as molecular weight) in the diol compound is 200 or more, and the molecular weight of less than 200 is called a low molecular diol compound. Further, as the molecular weight of the polymer diol, the molecular weight is preferably from 1,000 to 8,000 or less, more preferably from 1,500 to 6,000.

It is also possible to use a polyurethane urethane having a compound having a hydroxyl group and an amine group in the molecule as a chain extender. It is also preferable to use a trifunctional or higher polyfunctional diol, an isocyanate or the like insofar as the effects of the present invention are not impaired.

The polymer diol is preferably a polyether diol, a polyester diol, a polycarbonate diol or the like. In particular, a polyether diol is preferably used from the viewpoint of imparting flexibility and elongation to the yarn.

Specific examples of the polyether diol include: poly Ethylene glycol, modified polyethylene glycol, polypropylene glycol, poly-propyl ether glycol, polybutylene glycol (hereinafter referred to as PTMG), tetrahydrofuran (hereinafter abbreviated as THF) and 3-methyl-THF Modified PTMG, modified PTMG of THF and 2,3-dimethyl-THF copolymer, modified PTMG of THF and neopentyl glycol, THF and ethylene oxide and/or A random copolymer in which propylene oxide is irregularly arranged. One type of these polyether diols can be used, and two or more types can also be used. Among them, preferred is PTMG or modified PTMG.

Next, as a diisocyanate, aromatics such as diphenylmethane diisocyanate (hereinafter abbreviated as MDI), toluene diisocyanate, 1,4-diisocyanate benzene, benzodimethyl diisocyanate, and 2,6-naphthalene diisocyanate The diisocyanate is preferred because it can obtain an elastic yarn formed of a polyurethane having high heat resistance and strength. Further, as the alicyclic diisocyanate, for example, methylene bis(cyclohexyl isocyanate), isophorone diisocyanate, methylcyclohexane-2,4-diisocyanate, methylcyclohexane-2,6- are preferable. Diisocyanate, cyclohexa-1,4-diisocyanate, hexahydrophenylene diisocyanate, hexahydrotoluene diisocyanate, octahydro-1,5-naphthalene diisocyanate, and the like. The aliphatic diisocyanate can be effectively used particularly in suppressing yellowing of the elastic yarn formed of the polyurethane. These diisocyanates can be used singly or in combination of two or more.

Next, at least one of a low molecular weight diamine and a low molecular weight diol is preferably used as the chain extender of the polyurethane. It may also be, for example, an ethanolamine having a hydroxyl group and an amine group in the molecule.

Examples of the low molecular weight diamine include ethylenediamine, 1,2-propylenediamine, 1,3-propanediamine, 1,6-hexanediamine, p-phenylenediamine, and Xylylenediamine, m-xylylenediamine, p,p'-methylenebis(aniline), 1,3-cyclohexanediamine, hexahydrophenylene diamine, 2-methyl-1,5-pentane Amine, bis(4-aminophenyl)phosphine oxide, and the like. It is preferred to use one or more of these. Particularly preferred is ethylenediamine. By using ethylenediamine, it is possible to easily obtain elongation, elastic recovery, and filaments excellent in heat resistance. To the extent that the effect is not lost, a triamine compound capable of forming a crosslinked structure such as diethylenetriamine or the like may be added to these chain extenders.

Further, examples of the low molecular weight diol include ethylene glycol, 1,3-propanediol, 1,4-butanediol, bis(hydroxyethoxy)benzene, and dihydroterephthalate. 1-methyl-1,2-ethanediol, and the like. It is preferred to use one or more of these. Particularly preferred are ethylene glycol, 1,3-propanediol, and 1,4-butanediol. When these diols are used, the heat resistance of the diol-elongated polyurethane becomes higher, and a higher-strength elastic yarn formed of a polyurethane can be obtained.

In the polyurethane, the terminal blocking agent is preferably used in combination of one type or two or more types. As the blocking agent, preferred are: dimethylamine, diisopropylamine, methylethylamine, diethylamine, methylpropylamine, isopropylmethylamine, diisopropylamine, butylmethylamine, isobutylmethylamine, isoamylmethylamine. A monoamine such as dibutylamine or diamylamine; a monohydric alcohol such as ethanol, propanol, butanol, isopropanol, allyl alcohol or cyclopentanol; a monoisocyanate such as phenyl isocyanate.

The fibrous structure of the present invention preferably contains a metal phosphate in the elastic yarn formed of the polyurethane. By containing a metal phosphate, it is possible to further improve the deodorizing property of ammonia, acetic acid, and the like which are main components of sweat odor and odor of the elderly.

The metal phosphate in the present invention, from the viewpoint of deodorization It is preferable that it is an acidic phosphate of a tetravalent metal such as a zirconium phosphate or a titanium phosphate having a layer structure, and aluminum dihydrogen phosphate. More preferably, it is titanium phosphate and/or zirconium phosphate. These can be used alone or in combination of two or more.

The content of the metal phosphate is preferably in the range of 0.5% by mass or more and 10% by mass or less based on the total mass of the elastic yarn formed of the polyurethane. The content of the metal phosphate is preferably 0.5% by mass or more, because a higher ammonia deodorizing property can be obtained when it is made into a fabric. More preferably, it is 1.0% by mass or more. On the other hand, when the content exceeds 10% by mass, the stretchability is deteriorated and the cost is not good. More preferably, it is 7.0% by mass or less. In view of the balance between deodorant property and physical properties and cost, it is particularly preferably in the range of 1.5% by mass or more and 5.0% by mass or less.

The metal phosphate has an average primary particle diameter of preferably 3.0 μm or less from the viewpoint of suppressing clogging of the spinning dope to the spinning nozzle. More preferably, it is 1.5 μm or less. On the other hand, in the case where the average primary particle diameter is less than 0.05 μm, since the cohesive force is high, it becomes difficult to uniformly mix in the spinning dope, and therefore the average primary particle diameter is preferably 0.05 μm or more. More preferably, it is 0.15 μm or more.

Further, the elastic yarn formed of the polyurethane may contain various stabilizers, pigments, and the like. For example, BHT or a hindered phenol-based drug such as "Sumilizer" (registered trademark) GA-80 manufactured by Sumitomo Chemical Co., Ltd., and various products manufactured by Ciba-Geigy Co., Ltd. are preferably included in the light stabilizer, the antioxidant, and the like. a benzotriazole-based or benzophenone-based pharmaceutical such as Tinuvin (registered trademark), a phosphorus-based agent such as "Sumilizer" (registered trademark) P-16 manufactured by Sumitomo Chemical Co., Ltd., and various hindered amine-based agents; Various pigments such as iron oxide and titanium dioxide An inorganic substance such as zinc oxide, cerium oxide, magnesium oxide, calcium carbonate or carbon black; a fluorine-based or polyoxyn-based resin powder; a metal soap such as magnesium stearate; and a lubricant such as polyfluorene or mineral oil. Various antistatic agents such as cerium oxide, betaine or phosphoric acid, etc., and they are preferably bonded to the polyurethane. In order to further improve durability against light or various kinds of nitrogen oxides, etc., it is preferable to contain, for example, a nitrogen oxide scavenger such as HN-150 manufactured by JAPAN FINECHEM Co., Ltd.; and Sumilizer manufactured by Sumitomo Chemical Co., Ltd. (registered trademark) A thermal stabilizer such as GA-80; a light stabilizer such as "Sumisorb" (registered trademark) 300#622 manufactured by Sumitomo Chemical Industries, Ltd.

Next, a method of producing the fiber structure of the present invention will be described in detail.

The fiber structure of the present invention can be dyed by a fiber structure comprising an elastic yarn formed of a polymer diol and a diisocyanate-based polyurethane, or after dyeing It is obtained by treating in a bath using at least one alkyl diphenyl ether compound.

In the case of performing the bath treatment while dyeing, the alkyl diphenyl ether compound is mixed with an auxiliary agent such as a dye or a leveling agent which is generally used for dyeing to prepare a dyeing solution, and the usual dyeing temperature and time are used. It can be dyed.

Further, after the dyeing, the dyeing liquid is discharged, and an aqueous solution containing an alkyl diphenyl ether-based compound is prepared to carry out a treatment in a bath, and the temperature and time may be set to perform a bath treatment. The temperature to be treated in the bath in this case is preferably in the range of 50 to 130 °C. If lower than When the temperature is 50 ° C, the washing durability is insufficient, and if it exceeds 130 ° C, the texture of the fiber structure may be impaired. The treatment time is preferably in the range of 10 to 60 minutes.

In the case of producing a dyeing liquid or an aqueous solution containing an alkyl diphenyl ether compound, it is preferred to adjust the pH of the liquid to a range of 2.0 to 5.0. The pH adjustment may be an acid generally used in dyeing/surface processing, and examples thereof include acetic acid, formic acid, citric acid, and malic acid, and any of them may be used.

As the apparatus used for the treatment in the bath, any of a liquid flow dyeing machine, a gas flow dyeing machine, a jig dyeing machine, a warp beam dyeing machine, and a rope dyeing machine (Wince) can be used.

As another manufacturing method, at least one alkyl diphenyl ether system can be used by using a fiber structure comprising an elastic yarn formed of a polymer diol and a diisocyanate as a starting material. The compound is subjected to a filling treatment to obtain. That is, after the treatment liquid containing the alkyl diphenyl ether compound is impregnated into the fiber structure, the roll is rolled, and then the pad-dry-cure is heat-treated. Law to deal with. The drying temperature for the heat treatment is preferably in the range of 100 to 150 ° C, and the surface fixing temperature is preferably in the range of 150 to 200 ° C. In the case of producing a treatment liquid containing an alkyl diphenyl ether compound, the pH of the treatment liquid is preferably adjusted to a range of 2.0 to 5.0. The pH adjustment may be any acid generally used in dyeing/surface processing, and examples thereof include acetic acid, formic acid, citric acid, and malic acid, and any of them may be used. As a device used for the filling process, in addition to a general resin processing machine, a gravure roll coater, a knife coater, etc. may be used, and a roll may be used arbitrarily. Dryer, heat setting machine, etc.

Further, it is also possible to mix and prepare a treatment liquid containing an alkyl diphenyl ether compound with a printing paste, and to impart a fiber structure to the same while printing.

In the method of producing the yarn stage, when the oil is added by dry spinning or melt spinning of the elastic yarn formed of the polyurethane, it can be imparted by using an oiling roller or the like alone or in combination with an oil agent. An alkyl diphenyl ether compound. In addition, when making and processing a composite yarn of an elastic yarn composed of these synthetic fibers or natural fibers and polyurethane, air intermingle, merging, false twist or core yarn, Alternatively, an alkyl diphenyl ether compound can be imparted by using an oiling roller or the like alone or in combination with an oil agent.

[Examples]

Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to the following examples.

<Washing method>

According to the standard washing method described in the washing method of the SEK-marked fiber product (Planner: General Corporate Legal Person Fiber Evaluation Technology Agreement Product Certification Department, Revision Date: April 1, 2008), JIS L 0217:1995. The household electric washing machine specified in the washing method 103 described in the "Determination of the use of the fiber product and the method of the present invention" is added with a JAFET standard formula detergent in a ratio of 40 mL with respect to 30 L of water at 40 ° C (blending) Polyoxyethylene alkyl ether and sodium olefin sulfonate), used as a washing liquid, put the sample and the required load cloth to make the bath ratio 1:30, wash for 5 minutes, dehydrate, rinse for 2 minutes, dehydrate, rinse 2 minutes, dehydrated The procedure was repeated once, and this was repeated 10 times, and then dried to dry.

<Evaluation method of deodorization>

According to the deodorization test described in the SEK mark fiber product certification standard (the formulator: the general corporate legal person fiber evaluation technology agreement product certification department, revised date: April 1, 26), the odor component is detected by the inspection tube method. Deodorant evaluation. As the odor component, ammonia, acetic acid, isovaleric acid, and terpene alcohol are used.

The initial concentration of the odor component was 100 ppm of ammonia, 30 ppm of acetic acid, 38 ppm of isovaleric acid, and 14 ppm of decene alcohol. In the blank test, only the odor components were filled and sealed in a 5 L sample bag (made of a film), and after leaving for 2 hours, the residual gas concentration was measured using a gas detecting tube corresponding to each component, and this was regarded as a blank test concentration. Next, the sample for measurement (10 cm × 10 cm) was placed in a sample bag (made of a film), and the odor component of the predetermined concentration was filled and sealed, and the residual gas concentration after 2 hours was measured by a gas detecting tube corresponding to each component. This was taken as the measured concentration. The measurement was performed three times, and the average value was used, and the rate of decrease of the residual gas concentration was calculated by the following formula, and it was described as the deodorization rate.

Deodorization rate (%) of each deodorant component = ((blank test concentration - measured concentration of each sample) / blank test concentration)) × 100

The evaluation criteria of the deodorization rate are 70% or more of ammonia, 70% or more of acetic acid, 85% or more of isovaleric acid, and 75% or more of decene alcohol.

<Method for calculating the unit mass of each fiber in the fiber structure>

It is obtained from the measured value (the ratio of each fiber) when the knitted fabric is produced, and the measured value of the unit mass of the knitted fabric.

(Example 1)

Using a 28-gauge circular knitting machine, an elastic yarn (Lycra T-127C manufactured by Toray operontex) of 84 dtex72 filaments of a cationic dyeable polyester and a polyurethane was dispensed. Made into a bare jersey. The elastic yarns formed from the polyurethane and the unit mass of the cationic dyeable polyester are shown in Table 1.

The dyeing liquid was prepared under the following conditions, and the obtained knitted fabric was dyed, and subjected to a bath treatment at 120 ° C for 30 minutes, followed by soaping, hot water washing as usual, and then drying at 130 ° C. Surface fixation at 180 ° C for 1 minute.

Dye: Kayacryl Black BS-ED (made by Nippon Kasei Co., Ltd.)

Sodium butyl diphenyl ether disulfonate represented by the following formula (2)

pH adjuster: 90% acetic acid 1g / L

The details of the obtained fiber structure are shown in Table 1. The evaluation results of the deodorizing property of the original fabric before washing and the washing 10 times are shown in Table 2.

(Example 2)

The same knit fabric as in Example 1 was used except Kayacryl Black BS-ED (manufactured by Nippon Kasei Co., Ltd.), except that the elastic yarn and the cationic dyeable polyester were formed of a polyurethane having a unit mass as shown in Table 1. After dyeing, first The liquid was drained, and the treatment liquid under the following conditions was subjected to a bath treatment at 80 ° C for 20 minutes, followed by soaping and hot water washing as usual, followed by drying at 130 ° C and surface fixation at 180 ° C for 1 minute. .

Sodium dodecyl diphenyl ether disulfonate represented by the following formula (3)

pH adjuster: 90% acetic acid 1g / L

The details of the obtained fiber structure are shown in Table 1. The evaluation results of the deodorizing property of the original fabric before washing and the washing 10 times are shown in Table 2.

(Example 3)

The same knit fabric as in Example 1 was used except Kayacryl Black BS-ED (manufactured by Nippon Kasei Co., Ltd.), except that the elastic yarn and the cationic dyeable polyester were formed of a polyurethane having a unit mass as shown in Table 1. After the dyeing, as usual, soaping, hot water washing, and drying at 130 ° C, the treatment liquid adjusted under the following conditions was used, and after immersion, it was dipped/rolled at a 70% rolling ratio by a roll, and dried at 130 ° C. The surface was fixed at 180 ° C for 1 minute.

An aqueous solution of sodium dodecyl diphenyl ether disulfonate (30 g/L) represented by the following formula (4)

pH adjuster: citric acid 2g / L

The details of the obtained knitted fabric are shown in Table 1. The evaluation results of the deodorizing property of the original fabric before washing and the washing 10 times are shown in Table 2.

(Example 4)

Using a 28-pin circular knitting machine, an elastic yarn 44dtex composed of a cationic dyeable polyester of 84 dtex 72 filament and a polyurethane containing 3% by mass of titanium phosphate as a metal phosphate was used to make elasticity. Jersey. The elastic yarns formed from the polyurethane and the unit mass of the cationic dyeable polyester are shown in Table 1. The dyed processing was carried out in the same manner as in Example 3 except that the obtained knitted fabric was used.

The details of the obtained knitted fabric are shown in Table 1. The evaluation results of the deodorizing property of the original fabric before washing and the washing 10 times are shown in Table 2.

(Comparative Example 1)

The same knit fabric as in Example 4 was used except for the elastic yarn formed of the polyurethane and the cationic dyeable polyester having the unit mass as shown in Table 1, and the double twelve shown in the formula (4) was not used. The same processing was carried out except for the sodium alkyl diphenyl ether disulfonate.

The details of the obtained knitted fabric are shown in Table 1. The evaluation results of the deodorizing property of the original fabric before washing and the washing 10 times are shown in Table 2.

[Industrial availability]

The deodorant fiber structure of the present invention is excellent in deodorization of sweat odor or odor of the elderly, and can be used for clothing applications such as socks, stockings, underwear, outerwear, and sportswear, and linings, linings, narrow-size tapes, and the like. Material use, use of daily necessities such as disposable diapers and sanitary napkins, and use of industrial materials.

Claims (7)

A fibrous structure comprising an elastic yarn formed of a polyurethane having a polymer diol and a diisocyanate as a starting material, and comprising at least one alkyl diphenyl ether compound. The fiber structure of claim 1, wherein the ratio of the mass of the alkyl diphenyl ether compound contained in the fiber structure is relative to the mass of the elastic yarn formed of the polyurethane The range of 0.1 to 100% by mass. The fibrous structure of claim 1 or 2, wherein the alkyl diphenyl ether compound is an alkyl diphenyl ether sulfonic acid or an alkyl diphenyl ether sulfonate. The fiber structure according to any one of claims 1 to 3, wherein the elastic yarn formed of the polyurethane contains a metal phosphate. The fiber structure according to any one of claims 1 to 4, wherein the metal phosphate is titanium phosphate and/or zirconium phosphate. A method for producing a fibrous structure, which is a fibrous structure comprising an elastic yarn formed of a polyurethane having a polymer diol and a diisocyanate as a starting material, at the same time as dyeing or after dyeing, The treatment in the bath is carried out using at least one alkyl diphenyl ether compound. A method for producing a fibrous structure, which comprises using at least one alkyldiphenyl group as a fibrous structure comprising an elastic yarn formed of a polymer diol and a diisocyanate-based polyurethane. The ether compound is subjected to a filling treatment.