JP3806965B2 - Hygroscopic and water-repellent fiber structure - Google Patents

Description

表１中
マックスガードＥＣ−４００（弗素系撥水剤） ；（株）京絹化成 製
スミテックスレジンＭＫ（ヘキサメチロールメラミン）；住友化学工業（株）製
スミテックスアクセレータＡＣＸ（有機アミン系触媒）；住友化学工業（株）製
スーパーフレッシュＪＢ−７２００（多官能ブロックイソシアネート含有ウレタン樹脂）；（株）京絹化成 製
カタリストＷＬ−２（有機スズ系触媒） ；（株）京絹化成 製
上述のように実施例１〜４、比較例１〜５で得られた布帛について、それぞれ吸放湿パラメーターΔＭＲ、撥水度を測定した結果を表２に示す。
【００５８】
【表２】

表２から明らかなように、本発明の繊維構造物は吸湿性および撥水性がともに優れた耐久性を有していた。
【００５９】
【発明の効果】
上述したように、本発明の繊維構造物によれば、ポリエテル系繊維から構成されたものでありながら耐久性にすぐれた吸湿性と撥水性を奏することができる。したがって、雨衣、スポーツ衣料として使用した場合、ムレ感、ベタツキ感がなく、しかも雪や雨などに対して優れた撥水効果を発揮することができる。
【図面の簡単な説明】
【図１】本発明に使用される芯鞘型複合繊維の横断面を示すモデル図である。
【図２】本発明に使用される芯鞘型中空複合繊維の横断面を示すモデル図である。
【図３】本発明に使用される海島型複合繊維の横断面を示すモデル図である。
【図４】本発明に使用される張り合わせ型複合繊維の横断面を示すモデル図である。
【符号の説明】
１ 芯部
２ 鞘部
１ａ 島部
２ａ 海部
１ｂ，２ｂ 張り合わせ部
３ 中空部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a moisture-absorbing / water-repellent fiber structure, and more specifically, a fiber suitable for rain clothing, sports clothing, etc. that does not feel stuffy or sticky by having excellent water absorption while having water repellency. It relates to structures.
[0002]
[Prior art]
Thermoplastic synthetic fibers represented by polyester have physical and chemical properties that are superior to natural fibers in terms of form stability, mechanical strength, chemical resistance, heat resistance, washing durability, etc. Widely used. On the other hand, however, its hygroscopicity is low, so in applications where it has been subjected to water-repellent finishing and sewn on rain clothes, windbreakers, sports clothing, etc., it causes stuffiness or stickiness due to sweating from the skin, resulting in a very comfortable feeling to wear. There was a problem of being bad.
[0003]
From such a problem, as a measure for achieving both functions of hygroscopicity and water repellency, Japanese Patent Application Laid-Open No. 57-121618 discloses that water-soluble polyamide and polysiloxane are melt-spun and water-soluble. Hygroscopic / water-repellent fibers have been proposed that are hygroscopic with polyamide and water-repellent with polysiloxane. However, in this method, the hygroscopicity and water repellency are reduced by washing multiple times, and it is not necessarily a sufficient method.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a fiber structure having both moisture absorption performance and water repellency performance excellent in durability in view of the current state of the prior art as described above.
[0005]
[Means for Solving the Problems]
  The moisture-absorbing / water-repellent fiber structure of the present invention that achieves the above object is a fiber structure comprising a polyester-based fiber having a moisture absorption / release parameter ΔMR of 1% or more.The polyester-based 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 crosslinking agent while copolymerizing a hydrophilic compound, andA polyfluoroalkyl group-containing acrylic copolymer is bonded to the surface of the polyester fiber.A moisture-absorbing / water-repellent fiber structure, or a fiber structure comprising a polyester-based fiber having a moisture absorption / release parameter ΔMR of 1% or more, wherein the polyester-based fiber is a polyether ester amide or a polyether ester. Moisture absorption / repellency is a composite fiber or blend fiber containing 5% by weight or more of a mixture of an amide and another thermoplastic resin, and a polyfluoroalkyl group-containing acrylic copolymer is bonded to the surface of the polyester fiber. It is an aqueous fiber structure.
[0006]
More preferably, in addition to the polyfluoroalkyl group-containing acrylic copolymer, the polyester fiber further joins at least one of a reaction product of an aminoplast resin and a polyfunctional blocked isocyanate-containing urethane resin. Hygroscopic / water-repellent fiber structure.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, as the hygroscopic polyester fiber constituting the hygroscopic / water-repellent fiber structure, one having a moisture absorption / release parameter ΔMR of 1% or more is used. More preferably, those having a moisture absorption / release parameter ΔMR of 1.5 to 10%, more preferably 3 to 10% are used from the viewpoints of comfort at the time of wearing, yarn production, weaving and knitting. .
[0008]
If the moisture absorption / release parameter ΔMR of the polyester fiber is less than 1%, it is difficult to prevent stuffiness or stickiness due to sweating from the skin due to low hygroscopicity. On the other hand, when the moisture absorption / release parameter ΔMR exceeds 10%, the moisture absorption capacity from the skin is too high, which dries the skin and deteriorates the wearing feeling.
Further, the moisture absorption property of the polyester fiber is excellent in washing durability, and it is preferable that the moisture absorption / release parameter ΔMR after 5 times of washing is within 70% before washing.
[0009]
In the present invention, the moisture absorption / release parameter ΔMR is the moisture absorption rate MR at 30 × 90% RH.₂And moisture absorption rate MR at 20 ° C. × 65% RH₁And the formula ΔMR (%) = MR₂-MR₁The value calculated by. The larger the moisture absorption / release parameter ΔMR, the higher the moisture absorption capability, and when used for clothes, the sweating and stickiness are not generated, and a comfortable wearing feeling can be given.
[0010]
The above-mentioned hygroscopic polyester fiber is not particularly limited as long as it is a fiber containing a polyester component, but taking into consideration the yarn-making property, weaving property, dyeability, durability of yarn performance, etc. It is preferable to use fibers as described below.
That is, one of them is a copolyester obtained by copolymerizing a hydrophilic compound (A), and at least one of the polar group-containing compound (B) and the crosslinking agent (C) is added to the copolyester by 5 wt. It is using the composite fiber or blend fiber containing the copolyester (D) containing more than%.
[0011]
The other is to use a composite fiber or a blend fiber containing 5% by weight or more of polyether ester amide (E) or a mixture of polyether ester amide and other thermoplastic resin (F). .
Hereinafter, the two types of polyester fibers having hygroscopicity will be described.
[0012]
First, in the copolymerized polyester (D) constituting the former polyester fiber, the hydrophilic compound (A) of the copolymer component is preferably a compound containing at least one ester-forming group, and there is a particular limitation. Although not shown, polyoxyalkylene compounds, polyoxazolines, polyacrylamide and derivatives thereof can be used as typical compounds.
[0013]
Of these, polyoxyalkylene compounds and further polyoxyethylene compounds are preferred. Furthermore, among the polyoxyethylene compounds, polyethylene glycol compounds are preferable, and polyethylene glycol containing a crystallization control factor is particularly preferable.
Here, the crystallization control factor refers to an organic residue that exists in the molecular chain or at the terminal and disturbs 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 the melting point of polyethylene glycol having the same molecular weight.
[0014]
The molecular weight of the hydrophilic compound (A) is preferably 600 to 20000, more preferably 2000 to 6000, from the viewpoint of compatibility with polyester and dispersibility in polyester.
The proportion of copolymerization of the hydrophilic compound (A) is not particularly limited, but is preferably 40 to 99 wt% with respect to the total polymer weight from the viewpoint of spinnability.
[0015]
Most of these compounds are preferably copolymerized in the polyester, but some of them may exist in a dispersed state in the polymer.
Although it does not specifically limit as a polar group containing compound (B) contained in copolymerized polyester (D), The compound which has a polar group shown by following General formula [1] is preferable.
[0016]
Y_i-R₁-X_n                                    [1]
(However, Y_i= One or more polar groups selected from derivatives such as amino group, sulfone group, carboxyl group, hydroxyl group, amide group, phosphone group, i = 1 or more integer, R₁= Organic residue, X = ester-forming group, n = 1 or greater integer. )
Here, “containing” means a state of being dispersed or copolymerized in the polyester, but it is particularly preferable that the polyester is copolymerized. As the compound, a compound having a sulfonate group is particularly preferable.
[0017]
By including such a polar group-containing compound (B), not only the moisture absorption rate of the polymer is further increased, but also a hydrogen bond or an ionic mutual bonding action is produced in the polymer, and the physical properties over time when the fiber is obtained. It is possible to obtain an effect that the change is less likely to occur.
The content of the polar group-containing compound (B) is from 0 to 50 mol% with respect to the acid component constituting the entire polymer, from the viewpoint of preventing the occurrence of thread breakage and making it difficult to change with time. Is preferably 2 to 15 mol%.
[0018]
The crosslinking agent (C) contained in the copolymerized polyester (D) is not particularly limited as long as it is a compound that reacts with the copolymerized polyester (D) to form a crosslinked structure, but the following general formula [2] It is preferred to use the polyfunctional compounds shown.
(R_ThreeO)_nR₂(COOR_Four)_m                          [2]
(However, R_Three= Hydrogen or acetyl group, R₂= 3-6 valent organic residue, R_Four= Hydrogen or alkyl group, 3 ≦ m + n ≦ 6. )
Here, “containing” means a state in which the polyester is dispersed or copolymerized in the 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, but particularly preferred is trimellitic acid.
[0019]
By including such a cross-linking agent (C), not only the moisture absorption rate of the polymer is further increased, but also a cross-linked structure is formed in the polymer, and when it is used as a fiber, it is difficult to cause changes in physical properties over time. Is obtained.
As a mixture ratio of a crosslinking agent (C), it is preferable that it is 0-30 mol% with respect to the acid component which comprises all the polymers, Furthermore, it is preferable that it is 2-10 mol%. By setting it as such a range, hygroscopicity can be kept high, yarn-making property can be improved, and fiber properties such as strength can be improved.
[0020]
The polar group-containing compound (B) and the crosslinking agent (C) described above may contain at least one of the copolymerized polyester (D), but preferably the polar group-containing compound (B) and the crosslinking agent. It is good to contain both with an agent (C).
In addition, the copolyester (D) is a pigment such as titanium oxide or carbon black, a surfactant such as an alkylbenzene sulfonate, various antioxidants, an anti-coloring agent, and the like within a range not impairing the object of the present invention. There is no problem even if a light-proofing agent, an antistatic agent, or the like is added.
[0021]
Next, the polyether ester amide (E) constituting the other polyester fiber that can be used in the present invention, or a mixture of the polyether ester amide and another thermoplastic resin (F) will be described.
The polyether ester amide (E) refers to a block copolymer having an ether bond and an ester bond in the same molecular chain. More specifically, one or more polyamide-forming components (G) selected from lactams, aminocarboxylic acids, diamine and dicarboxylic acid salts, and polyethers comprising dicarboxylic acids and poly (alkylene oxide) glycols. A block copolymer polymer obtained by polycondensation reaction of the ester-forming component (H) can be preferably used.
[0022]
As the polyamide-forming component (G) of the polyether ester amide (E), lactams, ω-aminocarboxylic acids, nylon salts and the like can be used, and these may be used alone or in combination. 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 the polyether ester amide is preferably a C 4-20 dicarboxylic acid and poly (alkylene oxide) glycol. As the dicarboxylic acid having 4 to 20 carbon atoms, aliphatic, aromatic dicarboxylic acid, alicyclic dicarboxylic acid and the like can be used singly or in combination.
[0023]
Preferred dicarboxylic acids include general-purpose thermoplastic resins such as adipic acid and polyamide such as sebapolyglycine, polyester and polyolefin, decadic acid, terephthalic acid, and isophthalic acid.
Poly (alkylene oxide) glycols include polyethylene glycol, poly (1,2- and 1,3-propylene oxide) glycol, polytetramethylene oxide glycol, polyhexamethylene oxide glycol, ethylene oxide and propylene oxide, or tetrahydrofuran. Random or block copolymerization can be used, and polyethylene glycol is particularly preferable. The number average molecular weight of poly (alkylene oxide) glycol can be used in the range of 300 to 10000, preferably 500 to 4000.
[0024]
The polyether ester amide block copolymer is obtained by polycondensation of the polyamide-forming component (G) and the polyether ester-forming component (H).
As the thermoplastic resin (F) to be mixed with the polyether ester amide, for example, one or more of polyamides such as nylon 66 and nylon 6, polyester and polyolefin can be used. In particular, nylon 66, nylon 6, and modified polyethylene terephthalate copolymerized with a sulfonate compound are preferable because they have good compatibility with the polyether ester amide, can be finely dispersed with each other, and are less swelled by hot water.
[0025]
Here, as preferable sulfonate compounds as a copolymerization component of the modified polyester, 5-sodium sulfoisophthalic acid, 5- (tetraalkyl) phossonium sulfoisophthalic acid and ester derivatives thereof, sodium p-hydroxyethoxybenzenesulfonate, 2 , Potassium 5-bis (hydroxyethoxy) benzenesulfonate can be used.
[0026]
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 blend fiber obtained. % Is preferred.
The mixing ratio of the polyether ester amide and the thermoplastic resin (F) is 5 from the viewpoint of obtaining sufficient moisture absorption characteristics and preventing cracking of the fiber surface due to swelling in a hot water atmosphere as in the dyeing process. It is preferably ˜50 wt%, more preferably 10 to 40 wt%.
[0027]
In the present invention, the above-described copolymer polyester (D), polyether ester amide (E), or a mixture of polyether ester amide and another thermoplastic resin (F) is used as one component of the composite fiber or blend fiber. In some cases, the fiber-forming polymer used in combination therewith can be used polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6 and nylon 66, polyesters such as polyethylene terephthalate and polybutylene terephthalate, and the like. Is not to be done. Among these, it is particularly preferable to use a polyester mainly composed of polyethylene terephthalate having the highest versatility as a synthetic fiber for clothing.
[0028]
Although it does not specifically limit as a form of composite fiber, As shown in FIG. 1, the core-sheath-type composite fiber which consists of the core part 1 and the sheath part 2, and the core part 1, the sheath part 2, and the hollow part 3 as shown in FIG. A core-sheath type composite hollow fiber composed of the above, a sea-island type composite fiber composed of the island part 1a and the sea part 2a as shown in FIG. 3, a laminated type composite fiber composed of the laminated parts 1b, 2b as shown in FIG. be able to.
[0029]
For example, when the core-sheath type composite fiber of FIG. 1 and the core-sheath type composite hollow fiber of FIG. 2 are used, a copolymer polyester (D), polyether ester amide (E), or polyether ester amide is formed in the core part. A hygroscopic polymer such as a mixture with another thermoplastic resin (F) may be disposed, and a fiber-forming polymer may be disposed in the sheath.
[0030]
In this case, the composite ratio (% by weight) is preferably core / sheath = 5/95 to 90/10, more preferably 10/90 to 30/70. 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 a decrease in spinnability and a decrease in fiber properties. The core-sheath cross-sectional shape of the core-sheath type composite yarn may be concentric or eccentric, and the fiber cross-sectional shape may be an irregular cross-section such as a circle, polygon, or H shape.
[0031]
In the case of the sea-island type composite fiber of FIG. 3 and the laminated type composite fiber of FIG. 4, a copolymer polyester (D), a polyether ester amide (E) or a polyether ester amide is formed on the island part or one of the laminated parts. It is advisable to dispose a hygroscopic polymer such as a mixture of a thermoplastic resin (F) and another thermoplastic resin (F), and dispose a fiber-forming polymer in the sea part or the other laminated part.
[0032]
The composite ratio of the hygroscopic polymer in this case is preferably 5 to 90% by polymerization, and more preferably 10 to 30% by polymerization. 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 fiber physical properties.
Also, a blend in which a hygroscopic polymer such as a copolymer polyester (D), polyether ester amide (E), or a mixture of polyether ester amide and another thermoplastic resin (F) is blended with the fiber-forming polymer. In the case of fibers, the blending ratio of these hygroscopic polymers to the fiber-forming polymer is preferably 3 to 80% by weight, more preferably 7 to 30% by weight, based on the total polymer weight. The lower limit of the blending ratio is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit is set from the viewpoint of preventing a decrease in spinnability and fiber physical properties.
[0033]
In the present invention, the fiber-forming polymer includes pigments such as titanium oxide and carbon black, conventionally known antioxidants, anti-coloring agents, light-proofing agents, antistatic agents and the like as long as the object of the present invention is not impaired. There is no problem even if it is added.
In the fiber structure of the present invention, a water repellent (hereinafter referred to as a fluorine-based water repellent) having a polyfluoroalkyl group-containing acrylic polymer as a main component is joined to the surface of the above-described hygroscopic polyester fiber. It is characterized by being. More preferably, at least one of a reaction product of an aminoplast resin and a polyfunctional blocked isocyanate-containing urethane resin is bonded together with the fluorine-based water repellent.
[0034]
The form of the fiber when such a water repellent is bonded may be an original yarn such as a filament or a staple, or may be a fabric such as a woven or knitted fabric or a non-woven fabric. Also good.
The fluorine-based water repellent as used in the present invention is not particularly limited._Three~ C₂₀Produced by homopolymerization of only a monomer having a polyfluoro group or polyfluoroalkyl group, or the above vinyl monomer and another vinyl monomer having no polyfluoro group or polyfluoroalkyl group. Those produced by copolymerization can be used. As the vinyl monomer having a polyfluoro group or a polyfluoroalkyl group, for example, those shown below can be used.
[0035]
CH₂= CHCOOCH₂C₇F₁₅
CH₂= C (CH_Three) CHCOOCH₂C₆F₁₂CF_Three(CF_Three)
CH₂= CHCOO (CH₂)₂N (C_ThreeH₇) SO₂C₈F₁₇
C₆F₁₃CH₂CH₂OH
C₈F₁₇SO₂(C_ThreeH₇) CH₂CH₂OH
C₈F₁₇SO₂(C_ThreeH₇) CH₂OOCNH (CH₂)₆NH (CH₂CH₂O) CH_Three
Examples of other vinyl monomers having no polyfluoro group or polyfluoroalkyl group include ethylene, vinyl chloride, vinylidene chloride, acrylamide, styrene, benzyl acrylate, vinyl alkyl ketone, maleic anhydride, isoprene, siloxane, block A fluorine-based water repellent having a copolymer containing a vinyl monomer of isocyanate as a main component is suitable.
[0036]
As the aminoplast resin referred to in the present invention, known resins can be used. Specifically, melamine resins such as trimethylol melamine and hexamethylol melamine, dimethylol propylene urea, dimethylol ethylene urea, and dimethylol hydroxy are used. Uron resins such as urea and dimethyloluron can be used.
[0037]
In addition, a curing catalyst may be used together with an aminoplast resin. For example, salts of inorganic acids such as phosphoric acid, sulfuric acid and nitric acid, salts such as ammonium, aluminum and zinc, organic acids such as formic acid, acetic acid, acrylic acid and succinic acid. Salts can be used.
The polyfunctional blocked isocyanate-containing urethane resin referred to in the present invention is not particularly limited as long as it is a urethane resin containing two or more blocked isocyanate functional groups in the molecule.
[0038]
For example, tolylene diisocyanate, hexamethylene diisocyanate, diphenyl methane diisocyanate, hydrogenated diphenyl methane diisocyanate, triphenyl triisocyanate, xylene resin isocyanate, dicyclohexyl methane diisocyanate, trimethylolpropane tolylene diisocyanate adduct, glycerol tolylene diisocyanate adduct, etc. Polyfunctional blocked isocyanate-containing urethane resin obtained by reacting phenol, diethyl malonate, methyl ethyl ketoxime, sodium bisulfite ε-caprolactam, etc. as a blocking compound that can be dissociated upon heating at 7 to 200 ° C. to regenerate active isocyanate groups Can be used.
[0039]
The polyfunctional block isocyanate-containing urethane resin is preferably used as an aqueous dispersion liquid that is forcibly emulsified with a small amount of a surfactant. Among these, the aqueous dispersion liquid of methyl ethyl ketoxime of diphenylmethane diisocyanate and methyl ethyl ketoxime of trimethylolpropane tolylene diisocyanate adduct is preferable.
[0040]
In addition, a dissociation catalyst may be used to promote an improvement in the thermal separation rate of the blocked isocyanate and a decrease in the thermal dissociation temperature.Dibutyltin diolate,Dibutyltin distearateStearyl zinc and organic amine compounds are preferred.
The above-mentioned fluorine-based water repellent, a reaction product of a fluorine-based water repellent and an aminoplast resin or a polyfunctional blocked isocyanate-containing urethane resin, a reaction product of a fluorine-based water repellent and an aminoplast resin or a polyfunctional blocked isocyanate-containing urethane resin, The method for bonding to the water-absorbing polyester fiber is not particularly limited, and a single bath of a fluorine-based water repellent, a fluorine-based water repellent and an aminoplast resin or a polyfunctional blocked isocyanate-containing urethane resin. Or a fiber structure in which a treatment liquid containing a fluorine-based water repellent, an aminoplast resin, and a polyfunctional blocked isocyanate-containing urethane resin in one bath is processed into a polyester fiber or cloth in the form of an original yarn It is good to give and heat-process.
[0041]
In order to obtain washing-resistant water repellency, the fluorine-based water repellent is preferably added in an amount of 0.01 to 10% by weight, preferably 0.03 to 5% by weight based on the fiber weight. .
As for the aminoplast resin, the crosslinking effect is improved when used in a large amount, but the texture is hardened. Therefore, the solid content is 0.01 to 2% by weight, preferably 0.02 to 1% by weight based on the fiber weight. It is preferable.
[0042]
In addition, when the polyfunctional blocked isocyanate-containing urethane resin is used in a large amount, the crosslinking effect is improved, but there are problems such as curing of the texture, thermal yellowing at the time of heating, and deterioration of dyeing fastness. While obtaining a sufficient crosslinking effect, from the viewpoint of preventing these problems, the solid content is preferably 0.01 to 4% by weight, preferably 0.03 to 1% by weight, based on the fiber weight.
[0043]
A treatment solution containing these in one bath is uniformly applied to a polyester fiber or the fiber structure by a method such as a pad method, a spray method, or a coating method, dried at around 100 ° C., and 120 to 200 ° C., preferably 140 ° C. The reactant can be bonded to the fiber surface by heat treatment at ˜180 ° C. for 15 seconds to 5 minutes, preferably 30 seconds to 2 minutes.
[0044]
The term “joining” as used in the present invention refers to bonding or chemical bonding. Whether it is bonding, adhesion, or chemical bonding does not affect the effectiveness of the present invention.
In the fiber structure of the present invention, a treatment agent generally used for imparting other performance to the fiber structure, for example, polyamine-based or guanidine-based antistatic agent, amino- or hydrogen-polysiloxane-based silicone softener, Fluorine-based antifouling agent, UV absorber, heat stabilizer, ceramic, antibacterial agent, deodorant, pigment, etc. contained in fluorine-based water repellent, and at least any of aminoplast resin and polyfunctional blocked isocyanate-containing urethane resin You may make it process by mixing with the process liquid containing these.
[0045]
As described above, by forming the reaction product bonded to the hygroscopic polyester fiber, a fiber structure having both the hygroscopic property and the water repellency can be obtained.
[0046]
【Example】
In the examples described below, the following five types of test fabrics were used.
Sample fabric A
After adding 194 parts of dimethyl terephthalic acid, 135 parts of ethylene glycol, 26.6 parts of dimethyl 5-sodiumsulfoisophthalate, 7.5 parts of trimethyl trimellitic acid, and 0.1 part of tetrabutyl titanate, and conducting the transesterification reaction Then, 328 parts of polyethylene glycol having a molecular weight of 4000 was added and polymerization was carried out to obtain a copolyester.
[0047]
The copolyester thus obtained has a core component and polyethylene terephthalate as a sheath component, and the copolyester is 20 denier of 20% by weight of the total fiber weight, 18 filaments (for warp yarn) and 75 denier, 36 filaments. A concentric core-sheath composite fiber (for horizontal yarn) was produced.
A plain fabric having a warp density of 106 yarns / inch and a horizontal density of 84 yarns / inch was woven using this composite fiber, and then refining, dry heat setting, dyeing, and drying were performed.
[0048]
Sample fabric B
In the test fabric A, the copolyester was 3% by weight of the total weight of the fiber.
Sample fabric C
340 parts of ε-caprolactam, 18 parts of terephthalic acid and 100 parts of polyethylene glycol having a molecular weight of 1000 were added and polymerization was performed to obtain a polyetheresteramide block copolymer having a N6 component ratio of 45% by weight.
[0049]
70 parts by weight of the polyetheresteramide block copolymer thus obtained and 30 parts by weight of modified polyethylene terephthalate copolymerized with 2.0 mol% of 5-sodium sulfoisophthalic acid are blended in a chip state to form a core component. Concentric cores of 50 denier, 18 filaments (for warp yarns) and 75 denier, 36 filaments (for weft yarns) in which polyethylene terephthalate is a sheath component and the polyether ester amide block copolymer is 20% by weight of the total fiber weight A sheath composite fiber was produced.
[0050]
Using this composite fiber, a plain fabric having a warp density of 106 / inch and a horizontal density of 84 / inch was woven, and then refining, dry heat setting, dyeing, and drying.
Test fabric D
In the test fabric C, the polyether ester amide block copolymer was 3% by weight of the total weight of the fiber.
[0051]
Test fabric E
A 100% polyester multifilament was used to weave a plain fabric having a warp density of 106 / inch and a horizontal density of 84 / inch, followed by refining, dry heat setting, dyeing and drying.
Moreover, each evaluation used in the following Examples was performed with the following measuring method.
(1) Moisture absorption / release parameter ΔMR
From 1 to 3 g of fiber structure, the weight and change after standing for 24 hours in a commercially available constant temperature and humidity chamber in an atmosphere of 20 ° C. x 65% RH or 30 ° C. x 90% RH The moisture absorption rate was determined by the following formula.
[0052]
Moisture absorption rate (%) = [(weight after moisture absorption−weight when absolutely dry) / weight when absolutely dry] × 100
Furthermore, the moisture absorption rate MR of the above 20 ° C. × 65% RH condition₁, 30 ° C x 90% RH condition moisture absorption MR₂Therefore, the moisture absorption difference ΔMR determined by the following equation was used as a moisture absorption / release parameter.
ΔMR (%) = MR₂-MR₁
(2) Water repellency
It was represented by the number of water repellency by the spray method specified in JIS L-1092.
(3) Laundry
An automatic inversion swirl type electric washing machine (manufactured by Toshiba Corporation; having the same performance as VH-1150), 45 x 45 cm test cloth 500 g and 40 ± 2 ° C 0.2% slightly alkaline synthetic detergent (JIS K 3371) Weaked 25 liters of weakly alkaline first type liquid and washed under strong conditions for 25 minutes. Subsequently, after 30 seconds of dehydration with a centrifugal dehydrator, rinsing was performed for 10 minutes while overflowing normal temperature water. Thereafter, it was again dehydrated for 30 seconds and rinsed for 10 minutes under the same conditions. The above method is 5 times of washing.
Example 1
Sample fabric A and sample fabric C were immersed in a treatment solution of level 1 in Table 1, drawn to a drawing ratio of 60%, dried at 120 ° C., and then subjected to dry heat treatment at 180 ° C. for 60 seconds.
[0053]
Example 2
Sample fabric A and sample fabric C were immersed in a treatment solution of level 2 in Table 1, and the same treatment as in Example 1 was performed.
Example 3
Sample fabric A and sample fabric C were immersed in a treatment solution of level 3 in Table 1, and the same treatment as in Example 1 was performed.
[0054]
Example 4
Sample fabric A and sample fabric C were immersed in a treatment solution of level 4 in Table 1, and the same treatment as in Example 1 was performed.
Comparative Example 1
The sample fabric B, the sample fabric D, and the sample fabric E were immersed in a treatment solution of level 1 in Table 1 and the same treatment as in Example 1 was performed.
[0055]
Comparative Example 2
Sample fabric B, sample fabric D, and sample fabric E were immersed in a treatment solution of level 2 in Table 1 and the same treatment as in Example 1 was performed.
Comparative Example 3
Sample fabric B, sample fabric D, and sample fabric E were immersed in a treatment solution of level 3 in Table 1 and the same treatment as in Example 1 was performed.
[0056]
Comparative Example 4
The sample fabric B, the sample fabric D, and the sample fabric E were immersed in a treatment solution of level 4 in Table 1 and the same treatment as in Example 1 was performed.
Comparative Example 5
The test fabrics A to E were finished by a conventional method.
[0057]
[Table 1]

In Table 1
Maxguard EC-400 (fluorine-based water repellent); manufactured by Kyokin Kasei Co., Ltd.
Sumitex Resin MK (Hexamethylol Melamine); manufactured by Sumitomo Chemical Co., Ltd.
Smitex Accelerator ACX (Organic amine catalyst); manufactured by Sumitomo Chemical Co., Ltd.
Super Fresh JB-7200 (polyfunctional blocked isocyanate-containing urethane resin); Kyo Silk Kasei Co., Ltd.
Catalyst WL-2 (organotin-based catalyst); manufactured by Kyokin Kasei Co., Ltd.
Table 2 shows the results of measuring the moisture absorption / release parameter ΔMR and the water repellency of the fabrics obtained in Examples 1 to 4 and Comparative Examples 1 to 5 as described above.
[0058]
[Table 2]

As is clear from Table 2, the fiber structure of the present invention had durability excellent in both hygroscopicity and water repellency.
[0059]
【The invention's effect】
As described above, according to the fiber structure of the present invention, it is possible to achieve hygroscopicity and water repellency excellent in durability while being composed of polyether fibers. Therefore, when used as rain clothes or sports clothes, there is no feeling of stuffiness or stickiness, and an excellent water repellent effect against snow or rain can be exhibited.
[Brief description of the drawings]
FIG. 1 is a model diagram showing a cross section of a core-sheath composite fiber used in the present invention.
FIG. 2 is a model diagram showing a cross section of a core-sheath hollow composite fiber used in the present invention.
FIG. 3 is a model diagram showing a cross section of a sea-island composite fiber used in the present invention.
FIG. 4 is a model diagram showing a cross section of a laminated composite fiber used in the present invention.
[Explanation of symbols]
1 core
2 sheath
1a island
2a Kaifu
1b, 2b Laminating part
3 Hollow part

Claims (3)

What Hygroscopic parameter ΔMR fiber structure der made of polyester-based fibers is at least 1%, said polyester fibers, as well as copolymerization of hydrophilic compounds, a polar group-containing compound and / or crosslinking agents A moisture-absorbing / water-repellent fiber structure, which is a composite fiber or a blend fiber containing 5% by weight or more of the copolyester , and has a polyfluoroalkyl group-containing acrylic copolymer bonded to the surface of the polyester fiber. Hygroscopic parameter ΔMR is I fiber structure der made of polyester-based fibers is at least 1%, said polyester fibers are a mixture of polyether ester amide or polyether ester amides and other thermoplastic resin 5 A hygroscopic / water-repellent fiber structure which is a composite fiber or a blend fiber containing at least% by weight, and a polyfluoroalkyl group-containing acrylic copolymer is bonded to the surface of the polyester fiber. The moisture absorption / acceleration according to claim 1 or 2, wherein at least one of a reaction product of an aminoplast resin and a polyfunctional blocked isocyanate-containing urethane resin is further bonded to the surface of the polyester fiber. Water repellent fiber structure.

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