JP6199603B2 - Cloth and clothing - Google Patents

Description

  The present invention relates to a fabric that includes a meta-type wholly aromatic polyamide fiber and is excellent not only in heat shielding properties but also in sharpness, and a garment using the fabric.

  Conventionally, a cloth containing a meta-type wholly aromatic polyamide fiber has been used in protective clothing such as fire fighting clothing in order to obtain excellent heat shielding properties. However, there has been a problem that not only the initial planar wear strength is lowered but also the sharpness is lowered by repeatedly using such a fabric or by washing or dry cleaning using a surfactant such as a detergent. Various studies have been made to solve such problems.

For example, in Patent Document 1, a high-strength, high-heat-resistant fiber is arranged in a core yarn, and other dyeable fibers or original yarns are arranged in an untwisted state around the fiber, There has been proposed a method of maintaining aesthetics by coating a spiral with an original yarn.
In Patent Document 2, the core component is a composite spun yarn composed of para-aramid fiber and meta-aramid fiber, and the sheath component is composed of cellulose fiber, and the composite ratio of the core component / sheath component is within a specific range. A composite spun yarn and a woven or knitted fabric using the composite spun yarn have been proposed.

Further, in Patent Document 3, a core-sheath type composite spun yarn in which a core component is constituted by heat-resistant and high-performance fibers, and a sheath component is constituted by synthetic fibers, chemical fibers, or short fibers of natural fibers, A composite spun yarn in which the fiber is a crimped yarn has been proposed.
However, these methods use a core-sheath structure yarn, which complicates the process, and the meta-type wholly aromatic polyamide fiber disposed in the core part may be partially exposed, so that the sharpness is sufficient. There was a problem that was not.

JP 2009-249758 A JP 2009-209488 A JP 2003-147651 A

  The present invention has been made in view of the background described above, and an object of the present invention is to provide a fabric that includes a meta-type wholly aromatic polyamide fiber and is excellent not only in heat shielding properties but also in sharpness, and a clothing using the fabric. It is to provide.

  As a result of intensive studies to achieve the above-mentioned problems, the present inventor has found that a cloth containing a meta-type wholly aromatic polyamide fiber is excellent not only in heat shielding but also in sharpness by dyeing with a fluorescent dye. The present invention has been completed by finding out that it can be obtained and by further intensive studies.

Thus, a fabric containing "meta-type wholly aromatic polyamide fiber according to the present invention, are stained with a fluorescent dye, and Ri der L value is 80 or more, and the meta-type wholly aromatic polyamide In the fiber, the crystallinity is in the range of 15 to 25% and the residual solvent amount is 0.1% by mass or less, and the meta-type wholly aromatic polyamide fiber, para-type wholly aromatic polyamide fiber, and polyester fiber, A fabric characterized in that the flame retardant rayon is blended and contained in the fabric.

At that time, it is preferable to include 50 to 98 wt% with respect to fabric weight meta-type wholly aromatic polyamide fibers.

In the fabric of the present invention, it is preferable that any fiber constituting the fabric contains a flame retardant. Moreover, it is preferable that any fiber which comprises a fabric contains a ultraviolet absorber and / or a reflector. Moreover, it is preferable that the thermal insulation of the fabric measured by ISO6942 (2002) method is 22 or more.
Moreover, according to this invention, the clothing which uses the said fabric is provided.

  According to the present invention, a cloth containing a meta-type wholly aromatic polyamide fiber and excellent in not only a heat shielding property but also a sharpness, and a garment using the cloth can be obtained.

Hereinafter, embodiments of the present invention will be described in detail.
In the present invention, the meta-type wholly aromatic polyamide fiber is a fiber made of a polymer in which 85 mol% or more of the repeating unit is m-phenylene isophthalamide. Such a meta-type wholly aromatic polyamide may be a copolymer containing the third component within a range of less than 15 mol%.
Such a meta-type aromatic polyamide can be produced by a conventionally known interfacial polymerization method, and the degree of polymerization of the polymer is measured with an N-methyl-2-pyrrolidone solution having a concentration of 0.5 g / 100 ml. The intrinsic viscosity (IV) in the range of 1.3 to 1.9 dl / g is preferably used.

The meta-type wholly aromatic polyamide may contain an onium salt of alkylbenzene sulfonic acid. Examples of the onium salt of alkylbenzene sulfonate include tetrabutyl phosphonium salt of hexyl benzene sulfonate, tributyl benzyl phosphonium salt of hexyl benzene sulfonate, tetraphenyl phosphonium salt of dodecyl benzene sulfonate, tributyl tetradecyl phosphonate of dodecyl benzene sulfonate. Preferred examples include compounds such as a nium salt, tetrabutylphosphonium salt of dodecylbenzenesulfonate, and tributylbenzylammonium salt of dodecylbenzenesulfonate. Among them, dodecylbenzenesulfonic acid tetrabutylphosphonium salt or dodecylbenzenesulfonic acid tributylbenzylammonium salt is particularly easy to obtain, has good thermal stability, and high solubility in N-methyl-2-pyrrolidone. Preferably exemplified.
In order to obtain a sufficient dyeing property improving effect, the content of the alkylbenzene sulfonic acid onium salt is 2.5 mol% or more, preferably 3.0 to 7.0 mol, relative to poly-m-phenyleneisophthalamide. Those in the range of% are preferred.

  Moreover, as a method of mixing poly-m-phenylene isophthalamide and alkylbenzene sulfonic acid onium salt, a method of mixing and dissolving poly-m-phenylene isophthalamide in a solvent, and then dissolving alkylbenzene sulfonic acid onium salt in the solvent Any of these may be used. The dope thus obtained is formed into fibers by a conventionally known method.

The polymer used in the meta-type aramid fiber of the present invention has a repeating structure in an aromatic polyamide skeleton containing a repeating structural unit represented by the following formula (1) for the purpose of improving dyeability and resistance to discoloration. It is also possible to copolymerize an aromatic diamine component or aromatic dicarboxylic acid halide component different from the main structural unit of 1 to 10 mol% with respect to the total amount of the repeating structural units of the aromatic polyamide as the third component. It is.
-(NH-Ar1-NH-CO-Ar1-CO) -... Formula (1)
Here, Ar1 is a divalent aromatic group having a bonding group other than in the meta-coordinate or parallel axis direction.

Moreover, it is also possible to copolymerize as the third component. Specific examples of the aromatic diamine represented by the formulas (2) and (3) include, for example, p-phenylenediamine, chlorophenylenediamine, methylphenylenediamine, Examples include acetylphenylenediamine, aminoanisidine, benzidine, bis (aminophenyl) ether, bis (aminophenyl) sulfone, diaminobenzanilide, diaminoazobenzene, and the like. Specific examples of the aromatic dicarboxylic acid dichloride represented by the formulas (4) and (5) include, for example, terephthalic acid chloride, 1,4-naphthalenedicarboxylic acid chloride, 2,6-naphthalenedicarboxylic acid chloride, 4,4 Examples include '-biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, bis (chlorocarbonylphenyl) ether, and the like.
H ₂ N—Ar ₂ —NH 2 Formula (2)
_{H 2 N-Ar2-Y-} Ar2-NH 2 ··· formula (3)
XOC-Ar3-COX Formula (4)
XOC-Ar3-Y-Ar3-COX Formula (5)
Here, Ar2 is a divalent aromatic group different from Ar1, Ar3 is a divalent aromatic group different from Ar1, Y is at least one atom selected from the group consisting of an oxygen atom, a sulfur atom, and an alkylene group Or it is a functional group and X represents a halogen atom.

Further, the crystallinity of the meta-type aromatic polyamide fiber used in the present invention is 5 in that the dye has good exhaustibility and can be easily adjusted to the target color even with less dye or weak dyeing conditions. It is preferable that it is -35%. Furthermore, it is more preferably 15 to 25% in that the surface uneven distribution of the dye hardly occurs, the discoloration resistance is high, and the dimensional stability necessary for practical use can be secured.
Further, the residual solvent amount of the meta-type aromatic polyamide fiber is 0.1 in that it does not impair the excellent flame retardant performance of the meta-type aromatic polyamide fiber, and the surface unevenness of the dye hardly occurs and the discoloration resistance is high. It is preferable that it is below wt%.

The meta-type aromatic polyamide fiber described above can be produced by the following method. In particular, the degree of crystallinity and the amount of residual solvent can be adjusted to the above ranges by the method described later.
The polymerization method of the meta-type aromatic polyamide polymer is not particularly limited. For example, the solution polymerization method described in Japanese Patent Publication No. 35-14399, US Pat. No. 3,360,595, Japanese Patent Publication No. 47-10863, and the like. Alternatively, an interfacial polymerization method may be used.

The spinning solution is not particularly limited, and an amide solvent solution containing an aromatic copolyamide polymer obtained by the above solution polymerization or interfacial polymerization may be used, or the polymer is isolated from the polymerization solution, You may use what melt | dissolved this in the amide-type solvent.
Examples of the amide solvent used here include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide and the like, and in particular, N, N-dimethylacetamide. Is preferred.

The copolymerized aromatic polyamide polymer solution obtained as described above is preferably stabilized by containing an alkali metal salt or an alkaline earth metal salt, and can be used at a higher concentration and at a lower temperature. Preferably, the alkali metal salt and alkaline earth metal salt are 1% by weight or less, more preferably 0.1% by weight or less, based on the total weight of the polymer solution.
In the spinning / coagulation step, the spinning solution (meta-type wholly aromatic polyamide polymer solution) obtained above is spun into a coagulating solution and coagulated.

The spinning device is not particularly limited, and a conventionally known wet spinning device can be used. Further, the number of spinning holes, the arrangement state, the hole shape and the like of the spinneret are not particularly limited as long as they can be stably wet-spun. For example, the number of holes is 1,000 to 30,000, and the spinning hole diameter is 0.05. A multi-hole spinneret for ˜0.2 mm sufu may be used.
The temperature of the spinning solution (meta-type wholly aromatic polyamide polymer solution) when spinning from the spinneret is preferably in the range of 20 to 90 ° C.

  As a coagulation bath used for obtaining fibers, an amide solvent, which is substantially free of inorganic salts, preferably an aqueous solution having a concentration of NMP of 45 to 60% by mass within a temperature range of the bath solution of 10 to 50 ° C. Use. When the concentration of the amide solvent (preferably NMP) is less than 45% by mass, the skin has a thick structure, the cleaning efficiency in the cleaning step is lowered, and it is difficult to reduce the residual solvent amount of the fiber. On the other hand, when the concentration of the amide solvent (preferably NMP) exceeds 60% by mass, uniform coagulation cannot be performed up to the inside of the fiber, and therefore, the residual solvent amount of the fiber can be reduced. It becomes difficult. In addition, the range of 0.1-30 seconds is suitable for the immersion time of the fiber in a coagulation bath.

Subsequently, it is an aqueous solution having an amide solvent, preferably an NMP concentration of 45 to 60% by mass, and a stretch ratio of 3 to 4 times in a plastic stretching bath in which the temperature of the bath liquid is in the range of 10 to 50 ° C. Stretching is performed. After stretching, the film is thoroughly washed through an aqueous solution having an NMP concentration of 20 to 40% by mass at 10 to 30 ° C. and then a hot water bath at 50 to 70 ° C.
The washed fibers can be subjected to a dry heat treatment at a temperature of 270 to 290 ° C. to obtain meta-type wholly aromatic aramid fibers that satisfy the above-mentioned ranges of crystallinity and residual solvent amount.
The meta-type wholly aromatic aramid fiber may be a long fiber or a short fiber. In particular, short fibers having a fiber length of 25 to 200 mm are preferable in blending with fibers other than meta-type wholly aromatic polyamide fibers. Further, the single fiber fineness of the meta-type wholly aromatic aramid fiber is preferably in the range of 1 to 5 dtex.

  The fabric of the present invention may contain fibers other than meta-type wholly aromatic polyamide fibers. At that time, the fibers other than the meta-type wholly aromatic polyamide fiber are not particularly limited. For example, para-type wholly aromatic polyamide fiber, polybenzobisoxazole fiber, wholly aromatic polyester fiber, cellulose fiber, polyester fiber, polyamide Examples thereof include fibers, acrylic fibers, polyolefin fibers, polycarbonate fibers, recycled fibers, and natural fibers.

  Here, examples of the para-type wholly aromatic polyamide fiber include paraphenylene terephthalamide fiber and coparaphenylene 3,4′oxydiphenylene terephthalamide fiber. Polyester fibers include polyethylene terephthalate fiber, polybutylene terephthalate fiber, polyethylene naphthalate fiber, polybutylene terephthalate fiber, polylactic acid fiber, fiber made of aliphatic polyester such as polylactic acid or stereocomplex polylactic acid, material recycling or It was obtained by using a fiber comprising a chemically recycled polyester and a catalyst containing a specific phosphorus compound and a titanium compound, as described in JP-A-2004-270097 and JP-A-2004-212268. Examples thereof include fibers made of polyester and those containing a third component (for example, a cationic dye dyeable anion component such as sodium sulfoisophthalic acid). Examples of the polyamide fiber include nylon 6 fiber and nylon 66 fiber. Examples of polyolefin fibers include fibers made of low density polyethylene, high density polyethylene, polypropylene, and the like. Rayon is preferably exemplified as the recycled fiber. Moreover, cotton is suitably illustrated as a natural fiber.

The fibers other than the meta-type wholly aromatic polyamide fibers may be long fibers or short fibers. In particular, short fibers having a fiber length of 25 to 200 mm are preferable in blending with meta-type wholly aromatic polyamide fibers. Moreover, as a single fiber fineness of this fiber, the range of 1-5 dtex is preferable.
In the fabric of the present invention, it is preferable that any fiber constituting the fabric contains a flame retardant. The flame retardant may be kneaded into the polymer constituting the fiber or may be attached to the fiber surface.

Moreover, it is preferable that any fiber which comprises a fabric contains a ultraviolet absorber and / or a reflector. The ultraviolet absorber and / or the reflective agent may be kneaded into the polymer constituting the fiber, or may be attached to the fiber surface.
In addition, it is preferable that the fabric of the present invention contains 50 to 98% by weight of meta-type wholly aromatic polyamide fiber with respect to the weight of the fabric because excellent sharpness is obtained. For example, the meta-type wholly aromatic polyamide fiber is 50 to 98% by weight with respect to the fabric weight, the polyester fiber is 2 to 50% by weight with respect to the fabric weight, and the cellulose fiber such as rayon is 0 to 50% by weight. And dyeability (sharpness) and comfort are preferable.

Further, it is preferable that the meta-type wholly aromatic polyamide fiber and the fibers other than the meta-type wholly aromatic polyamide fiber are mixed and included in the fabric as spun yarn because excellent sharpness is easily obtained. At that time, the method for producing the spun yarn is not particularly limited, and may be a known method. For example, high-order air spinning techniques such as ring spinning, core spinning, air jet spinning, and Murata air jet spinning using staple air to staple fiber are exemplified.
The fabric structure is preferably a woven fabric such as plain weave, twill weave, satin or double weave, but may be knitted fabric or non-woven fabric. The production method of the fabric is not particularly limited, and a known knitting machine such as a rapier loom or a gripper loom can be used.
The fabric weight is preferably in the range of 120 to 300 g / m ² .

In order to obtain excellent sharpness, it is important that the fabric of the present invention is dyed with a fluorescent dye. In that case, it is preferable that it is dye | stained using fluorescent dye and a swelling agent.
Examples of the fluorescent dye include stilbene-based, coumarin-based, imidazole-based, triazole-based, and oxazole-based compounds. Among them, 2'2- (1,2- Ethenedinyl) bis (5-methylbenzoxazole) based fluorescent dye is preferred. Moreover, as a specific product, the fluorescent dye Illuminal BGF for cotton manufactured by Showa Kako can be preferably exemplified. Further, the 2′2- (1,2-ethenedinyl) bis (5-methylbenzoxazole) fluorescent dye has light resistance that is not problematic in practice.

  Examples of the swelling agent include DL-β-ethylphenethyl alcohol, 2-ethoxybenzyl alcohol, 3-chlorobenzyl alcohol, 2,5-dimethylbenzyl alcohol, 2-nitrobenzyl alcohol, p-isopropylbenzyl alcohol, 2- It is at least one selected from methylphenethyl alcohol, 3-methylphenethyl alcohol, 4-methylphenethyl alcohol, 2-methoxybenzyl alcohol, 3-iodobenzyl alcohol, cinnamic alcohol, p-anisyl alcohol, and benzhydrol. It is preferable. As specific products, benzyl alcohol, Dow Chemical's Dawanol PPH, and BOZZETTO's CINDYE DNK are desirable. Moreover, it is preferable to use benzyl alcohol, especially 2, 5- dimethyl benzyl alcohol or 2-nitro benzyl alcohol from the point which improves whiteness more.

The amount of the fluorescent dye attached is preferably 1 to 20% by weight, more preferably 5 to 15% by weight, based on the weight of the fabric. If the adhesion amount of the fluorescent dye is less than 1% by weight, there is a possibility that excellent sharpness cannot be obtained. On the other hand, when the amount of the fluorescent dye attached exceeds 20% by weight, there is a possibility that further improvement in sharpness cannot be obtained.
The amount of swelling agent used for dyeing is preferably 1 to 15% by weight, more preferably 1 to 10% by weight, based on the weight of the fabric.

As a dyeing method, it is preferable to perform liquid flow dyeing using an aqueous solution containing the fluorescent dye (preferably a fluorescent dye and a swelling agent) as a treatment liquid.
At that time, the treatment liquid is preferably an aqueous solution containing 5 to 10 weight parts of a swelling agent and 5 to 20 weight parts of a fluorescent dye with respect to 100 parts by weight of water. The dyeing conditions are preferably performed in the vicinity of the acidic pH 3-7. In order to adjust pH, inorganic acids such as phosphoric acid, sulfuric acid and hydrochloric acid, organic acids such as acetic acid, formic acid and tartaric acid, or acidic salts such as ammonium sulfate, ammonium acetate and ammonium formate are used alone or in combination of two or more. May be. Temperature: 80 to 130 ° C., time 10 to 90 minutes, preferably temperature 110 to 120 ° C. and time 60 to 80 minutes.
In order to make the staining conditions uniform, washing may be performed after the drying, and drying may be performed again under the same conditions as described above.

In the fabric thus obtained, the meta-type wholly aromatic polyamide fiber contained in the fabric is colored with a fluorescent dye, so that it exhibits excellent sharpness.
At that time, it is preferable that fibers other than the meta-type wholly aromatic polyamide fiber are not colored. For example, in the case where cellulose fibers such as rayon are contained in the fabric, when the fabric is dyed with a fluorescent dye, the meta-type wholly aromatic polyamide fiber is colored, but the cellulose fibers are not colored and remain white. The fiber does not disturb the sharpness.
The fabric thus obtained is excellent in heat shielding and sharpness. At that time, as the heat shielding property, it is preferable that the heat shielding property of the fabric measured by the ISO6942 (2002) method is 22 or more (more preferably 22 to 25). Further, it is important for the sharpness that the L value is 80 or more (preferably 83 to 95).

  Next, the garment of the present invention is a garment using the above-mentioned fabric. Since such a garment uses the above-mentioned fabric, it is excellent in sharpness. Such clothing includes fire clothes, fire protection clothes, space suits, office work clothes, motor sports racing suits, work clothes, uniforms, gloves, hats, vests, and the like. The work clothes include work clothes for ironworks and steel factories, work clothes for welding work, work clothes in an explosion-proof area, and the like. The gloves include working gloves used in the aircraft industry, the information equipment industry, the precision equipment industry, etc. that handle precision parts.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by these. In addition, each physical property in an Example is measured with the following method.

(1) Sharpness of fabric (colorimetry)
The sharpness (L value) was measured with a Macbeth spectrophotometer Color-Eye 3100.

(2) Heat insulation property of fabric It measured by ISO6942 (2002) method.

(3) Residual solvent amount About 8.0 g of fibrils are collected, dried at 105 ° C. for 120 minutes, allowed to cool in a desiccator, and the fiber mass (M1) is weighed. Subsequently, this fiber is subjected to reflux extraction using a Soxhlet extractor in methanol for 1.5 hours to extract an amide solvent contained in the fiber. The fiber after extraction is taken out, vacuum-dried at 150 ° C. for 60 minutes, allowed to cool in a desiccator, and the fiber mass (M2) is weighed. The amount of solvent remaining in the fiber (amide solvent mass) is calculated by the following formula using M1 and M2 obtained.
Residual solvent amount (%) = [(M1-M2) / M1] × 100
The obtained fiber was crimped and cut to obtain a staple fiber (raw cotton) having a length of 51 mm.

(4) Crystallinity Using an X-ray diffractometer (RINT TTRIII, manufactured by Rigaku Corporation), the fibrils were aligned on a fiber bundle having a diameter of about 1 mm and mounted on a fiber sample table to measure a diffraction profile. The measurement conditions were Cu-Kα radiation source (50 kV, 300 mA), scanning angle range of 10 to 35 °, continuous measurement 0.1 ° width measurement, 1 ° / min scanning. From the measured diffraction profile, air scattering and incoherent scattering were corrected by linear approximation to obtain a total scattering profile. Next, a crystal scattering profile was obtained by subtracting the amorphous scattering profile from the total scattering profile. The degree of crystallinity was determined by the following equation from the area intensity of the crystal scattering profile (crystal scattering intensity) and the area intensity of the total scattering profile (total scattering intensity).
Crystallinity (%) = [crystal scattering intensity / total scattering intensity] × 100

(5) Fabric basis weight Measured according to JIS L 1096.

[Production of meta-type wholly aromatic aramid fibers]
The meta-type wholly aromatic aramid fiber was prepared by the following method.
20.0 parts by mass of polymetaphenylene isophthalamide powder having an intrinsic viscosity (IV) of 1.9 produced by an interfacial polymerization method in accordance with the method described in Japanese Patent Publication No. 47-10863 is placed at −10 ° C. It was suspended in 80.0 parts by mass of cooled N-methyl-2-pyrrolidone (NMP) to form a slurry. Subsequently, the suspension was heated to 60 ° C. and dissolved to obtain a transparent polymer solution.
Next, in Example 1, the polymer solution was charged with 3.0% by mass of 2- [2H-benzotriazol-2-yl] -4-6-bis (1-methyl-1-phenyl) as a UV absorber. Ethyl) phenol powder (water solubility: 0.01 mg / L) was mixed and dissolved, and depressurized to obtain a spinning solution (spinning dope). In Example 2, in place of 2- [2H-benzotriazol-2-yl] -4-6-bis (1-methyl-1-phenylethyl) phenol, titanium oxide as an ultraviolet reflector was added to the spinning solution. .

[Spinning and coagulation process]
The spinning dope was spun from a spinning nozzle having a hole diameter of 0.07 mm and a hole number of 500 into a coagulation bath having a bath temperature of 30 ° C. The composition of the coagulation liquid was water / NMP = 45/55 (parts by mass), and was spun by discharging into the coagulation bath at a yarn speed of 7 m / min.

[Plastic stretching bath stretching process]
Subsequently, the film was stretched at a stretching ratio of 3.7 times in a plastic stretching bath having a composition of water / NMP = 45/55 at a temperature of 40 ° C.

[Washing process]
After stretching, the film was washed with a 20 ° C. water / NMP = 70/30 bath (immersion length 1.8 m), followed by a 20 ° C. water bath (immersion length 3.6 m), and then a 60 ° C. hot water bath (immersion length 5). 4m) and thoroughly washed.

[Dry heat treatment process]
The washed fiber was subjected to a dry heat treatment with a heat roller having a surface temperature of 280 ° C. to obtain a meta-type wholly aromatic aramid fiber.

[Physical properties of fibrils]
The physical properties of the obtained meta-type wholly aromatic aramid fiber were a fineness of 1.7 dtex, a residual solvent amount of 0.08% by mass, and a crystallinity of 19%.

The following thing was used for the other fiber raw cotton.
Polyester fiber; Teijin's polyethylene terephthalate fiber Rayon fiber; Lenzing's "LenzingFR (registered trademark)"
Para-type aramid fiber; “Twaron (registered trademark)” manufactured by Teijin Aramid
Conductive yarn (nylon): “NO SHOCK (registered trademark)” manufactured by Solcia

(Nylon conductive yarn kneaded with conductive carbon fine particles)
(Dyeing conditions of Examples 1 to 5)
As a cationic dye (fluorescent dye), a product name: Kayacryl ED Flavine 10G-E 5% owf manufactured by Nippon Kayaku Co., Ltd. was used for staining under the following conditions. Next, the obtained dyed product was washed in the following reducing bath (pH 5.5).
Bath ratio; 1:20
Temperature × time; 120 ° C. × 30 minutes Reduction bath composition and cleaning conditions:
Reduction bath; thiourea dioxide 1 g / liter bath ratio; 1:20
Temperature x time; 70 ° C x 15 minutes

(Dyeing conditions of Comparative Example 1)
As a cationic dye (non-fluorescent dye), it was dye | stained on the following conditions using Nippon Kayaku Co., Ltd. brand name: Kayacryl Yellow GL-ED 5% owf. Next, the obtained dyed product was washed in the following reducing bath (pH 5.5).
Bath ratio; 1:20
Temperature × time; 120 ° C. × 30 minutes Reduction bath composition and cleaning conditions:
Reduction bath; thiourea dioxide 1g / l
Bath ratio; 1:20
Temperature x time; 70 ° C x 15 minutes

[Example 1]
Each staple fiber of meta type wholly aromatic aramid fiber (MA), para type wholly aromatic polyamide (PA), polyester (PE) and flame retardant rayon (Ry) (each 51 mm in length) is MA / PA / PE / RY = 55/5/15/25 blended spun yarn 36 count / twist yarn, weaved at warp density 100 / 25.4mm, weft 56 / 25.4mm, weight per unit 230g / m A fabric composed of ² twill fabrics was obtained. Using this, it dye | stained by said method. The results are shown in Table 1.

[ Reference Example 1 ]
In Example 1, in place of 2- [2H-benzotriazol-2-yl] -4-6-bis (1-methyl-1-phenylethyl) phenol, titanium oxide as an ultraviolet reflector is added to the spinning solution. Except for this, a meta type wholly aromatic aramid fiber was obtained in the same manner as in Example 1. Also, except that the spun yarn was changed to a spun yarn in which meta-type wholly aromatic polyamide (MA), para-type wholly aromatic polyamide (PA), and nylon conductive yarn (AS) were blended at the blending ratio shown in Table 1. The same operation as in Example 1 was performed. The results are shown in Table 1.

[ Reference Example 2 ]
Example 1 except that the spun yarn was changed to a spun yarn in which meta-type wholly aromatic polyamide (MA), para-type wholly aromatic polyamide (PA), and nylon conductive yarn (AS) were blended at the mixing ratio shown in Table 1. The same operation was performed. The results are shown in Table 1.

[ Reference Example 3 ]
Example 1 except that the spun yarn was changed to a spun yarn in which meta-type wholly aromatic polyamide (MA), para-type wholly aromatic polyamide (PA), and polyester (PE) were blended at the blending ratio shown in Table 1. Was performed. The results are shown in Table 1.

[ Reference Example 4 ]
Example 1 except that the spun yarn was changed to a spun yarn in which meta-type wholly aromatic polyamide (MA), para-type wholly aromatic polyamide (PA), and flame-retardant rayon (RY) were mixed at the blending ratio shown in Table 1. The same operation was performed. The results are shown in Table 1.

[Comparative Example 1]
In Example 1, the same operation as Example 1 was performed except dyeing using a non-fluorescent dye. The results are shown in Table 1.

  According to the present invention, a fabric including a meta-type wholly aromatic polyamide fiber and excellent in not only a heat shielding property but also a sharpness, and a garment using the fabric are provided, and its industrial value is extremely large. .

Claims (6)

A fabric comprising a meta-type wholly aromatic polyamide fibers are dyed with a fluorescent dye, and Ri der L value is 80 or more, and in the meta-type wholly aromatic polyamide fiber, a degree of crystallinity of 15 The meta-type wholly aromatic polyamide fiber, para-type wholly aromatic polyamide fiber, polyester fiber, and flame retardant rayon are blended within a range of ˜25% and a residual solvent amount of 0.1% by mass or less. A fabric characterized in that it is contained in a fabric. The fabric according to claim 1, wherein the meta-type wholly aromatic polyamide fiber is contained in an amount of 50 to 98% by weight based on the weight of the fabric. The fabric according to claim 1 or 2, wherein any of the fibers constituting the fabric contains a flame retardant. The fabric according to any one of claims 1 to 3, wherein any of the fibers constituting the fabric includes an ultraviolet absorber and / or a reflective agent. The fabric according to any one of claims 1 to 4, wherein the heat shielding property of the fabric measured by ISO6942 (2002) method is 22 or more. The clothing which uses the fabric described in any one of Claims 1-5.