JP2001262477A - Dyed product produced by using polyester fibers and polyamide fibers, and method of producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dyed product that is made of polyamide fibers and polyester fiber, shows high fastness against washing and can clearly develop dark and light multicolor effect, and a method of producing the same. SOLUTION: The dyed product comprises a fiber structure comprising polyamide fiber and polyester fiber, wherein at least one of the polyester fiber and the polyamide fiber, has a thick and thin fiber form in the longitudinal direction of the fiber and is dyed at least with a dispersion dye and a reactive dye.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dyed product obtained by using polyester fiber and polyamide fiber which are excellent in washing fastness, heat resistance and heterochromaticity, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, attempts have been made to impart a natural shade difference seen in wool and hemp to synthetic fiber fabrics, or to obtain a new visual effect by coloring fine spots. For example, the following means can be mentioned. (1) A method of knitting or weaving yarns separately dyed at the yarn stage to form a fabric. (2) A method in which fibers having different dyeing properties are mixed and knitted or woven to form a fabric and then dyed. (3) A method of printing a spot pattern by the number of colors by roller printing or screen printing. (4) A method in which particles containing a dye are prepared and applied to a fabric to form a color. (5) A method of dyeing using fibers having structural differences.

[0003] Of these, means for expressing a natural difference in shade called a heather tone or a marbling tone are mainly (3)
And (5), (3) has a problem that it takes time and effort to engrave the rolls and manufacture the screen mold.

[0004] On the other hand, in the case of (5), as a fiber having a thick and thin morphology as a structural difference, the thick part is usually dyed in a dark color and the details in a fine color by a dyeing method, and a natural shading difference can be imparted. It is considered to be a promising means for expressing heather tone.

[0005] Examples of synthetic fibers having a thick and thin shape in the fiber longitudinal direction include polyester fibers, polyamide fibers and the like. Examples of the method for producing polyester fibers include, for example, JP-B-51-7207 and JP-A-52-103.
523, JP-A-55-16930, JP-A-1
No. 1-61552 and the like. Further, as a production method in the case of a polyamide fiber, for example, Japanese Patent No. 2572035,
There is one described in, for example, Japanese Patent No. 211335.

When such a fine fiber is used, a heather-like material having shading can be obtained by using a disperse dye for polyester fiber and an acid dye for polyamide fiber. It is widely used to give a nice surface feeling.

[0007] However, in any of these heather materials, only the difference in shade of a single color is expressed, and at present, heather materials of different colors have not been obtained. In fact, the present inventors cross-woven a polyester fiber and a polyamide fiber having a fine morphology, and dyed with a disperse dye and an acid dye to obtain a new appearance and a natural feeling by giving a different color effect to the difference in shade and shade. When a different color tone was attempted, it was found that not only a clear different color effect was not exhibited but also the heather tone due to the difference in lightness and density was reduced. This is thought to be because the disperse dye for dyeing the polyester fiber contaminates the polyamide fiber during dyeing, so that the expected color difference between the polyester fiber and the polyamide fiber is reduced, and the difference in the shade of the polyamide fiber is also reduced.

Further, when such a dyed product is used for clothing or the like, there is a problem that the washing fastness caused by the disperse dye contaminated on the polyamide fiber is reduced.

In order to improve the washing fastness, there is a method of dyeing only with a disperse dye or an acid dye, and mainly dyeing one side. However, in such a method, not only a different color tone cannot be expressed, but also problems such as flickering and lowering of coloring property occur.

[0010] Polyester is excellent in resilience, heat setting property and dimensional stability, and polyamide is abrasion resistance,
Since it is excellent in deep dyeing properties, ease of resin processing, and softness of surface touch, there is an advantage other than a different color effect, such as a superior composite by mixing them. However, even if the polyester and the polyamide are dyed in the same color, it is not possible to achieve both the color developing property and the washing fastness as described above.

Therefore, at present, there is no dyed product composed of a polyester fiber and a polyamide fiber having a thick and thin form, which satisfies all of the heather color, the coloring, the heterochromaticity and the washing fastness at the same time.

[0012]

DISCLOSURE OF THE INVENTION In view of the above-mentioned problems, the present invention provides a dyed product using polyamide fiber and polyester fiber, which is excellent in washing fastness and can clearly express the different shades of light and shade, and a method for producing the same. The purpose is to do.

[0013]

The present invention employs the following configuration and means to solve the above-mentioned problems.
That is, a fiber structure using a polyamide fiber and a polyester fiber, at least one of the polyester fiber and the polyamide fiber has a thin shape in the fiber longitudinal direction, and is at least dyed with a disperse dye and a reactive dye It is a dyed product.

A fiber structure comprising a polyamide fiber and a polyester fiber, wherein at least one of the polyester fiber and the polyamide fiber has a thin shape in the longitudinal direction of the fiber, is dyed with at least a disperse dye and a reactive dye. This is a method for producing a dyed product which is dyed with a liquid and then reduced and washed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The polyester fibers used in the present invention are typically polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, etc., but are not limited thereto, and isophthalic acid is an acid component other than terephthalic acid. , Naphthalene-
Modified polyesters such as those obtained by copolymerizing various dicarboxylic acids such as 2,5-dicarboxylic acid, and diols such as polyethylene glycol; modified polyesters blended with other kinds of polymers; aliphatic polyesters such as polylactic acid; included.

The polyamide fiber is not particularly limited as long as it has an amide bond in the main chain.
Nylon, 6-nylon, 6,6-nylon, 4,6-
Nylon, 9-nylon, 6,10-nylon, 11-
Nylon, 12-nylon, 6,12-nylon and modified polyamides based on these are exemplified.
Also, sodium polyacrylate, poly N pyrrolidone,
Moisture-absorbing and water-absorbing substances such as polyacrylic acid and its copolymers, polyvinyl alcohol and its copolymers, crosslinked polyethylene oxide polymers, and other thermoplastic resins may be contained as long as the object of the present invention is not hindered.

Incidentally, the polyester fiber and the polyamide fiber may contain a pigment, an electrostatic agent, a light-proofing agent, a heat-resistant agent, a matting agent and the like.

In the present invention, the term "thick and thin" refers to a shape whose cross-sectional area changes in the longitudinal direction of the fiber. The cross-sectional area ratio between the thick part and the thin part in the fiber axis direction (the cross-sectional area ratio of the thick part / the cross-sectional area ratio of the fine part) is 1.2 or more from the viewpoint of producing a sufficient density difference and obtaining an excellent heather tone. Is preferable, and 1.5 or more is more preferable. On the other hand, the cross-sectional area ratio is preferably 5 or less, more preferably 3 or less, from the viewpoint of forming an appropriate deeply dyed portion to obtain a good appearance and maintaining abrasion resistance.

In consideration of the surface unevenness effect and texture to be obtained, the maximum value of the multifilament in the cross section direction is preferably 1.2 or more and 5 or less, more preferably 1.5 or more and 3 or less. It is more preferred that:

Here, each cross-sectional area for obtaining the cross-sectional area ratio of the thick part and the thin part can be obtained by photographing the cross section of each of the thick part and the details of the single filament or the multifilament with an optical microscope.

The single fiber fineness of the polyester fibers and polyamide fibers used in the present invention is not particularly limited.
01-60 decitex is preferred. The fineness may be uniform or a mixture of two or more decitexes (eg, 1 dtex and 3 dtex), preferably 10 to 550 dtex for clothing and 100 to 3500 dtex for materials such as carpets. .

The method for producing the fiber having a structural difference in the longitudinal direction of the fiber is not particularly limited. For example, a method of drawing an undrawn yarn or a semi-drawn yarn at a natural drawing ratio or less, a method of drawing an undrawn yarn unevenly or a fixed length. From the heat treatment in the state of overfeed, and then cold drawing at room temperature, a method of intermittently applying water or an aqueous liquid to the undrawn yarn, and then heat drawing.
Etc. can be used. At this time, a composite false twisting step, a false twist crimping step, and in the case of a thick composite fiber yarn, a fiber opening or fibrillation step may be performed, and a desired yarn form can be appropriately obtained without any particular limitation.

In the present invention, a fibrous structure is formed by using at least one, preferably both, of the polyester fiber having the thick and thin form or the polyamide fiber having the thick and thin form. As used herein, the fiber structure includes a woven or knitted material, a mixed weave, a mixed knit, a nonwoven fabric, a yarn, or the like using a mixed fiber or a mixed spun yarn. In addition to these, polyesters and polyamides having substantially no thin shape, further polyurethane,
Various kinds of fibers such as acrylic, cellulose, wool, silk and the like may be contained. In the present invention, the fabric obtained by cross-weaving or knitting is preferable as the fibrous structure in that the heather-like appearance can be more clearly expressed.

Here, the fabric structure is not particularly limited.
What is necessary is just to determine according to the required appearance and use. For example, plain weave is preferred to give a heather-like appearance and a beetle effect, and if it is a different color heather that gives a natural feeling, fine color difference, it gives a desired appearance with twill weave, satin weave and various changed textures, special textures, etc. It is preferable that the reversible be properly used, for example, by giving it a satin weave, a double structure or a multilayer fabric structure. Further, the pattern may be displayed with a dobby or a jacquard. As a typical basic weave, 1 × 1 plain weave, 2 ×
2 twill weave, warp and weft in a weight ratio of 30:70 to 70:
30. This is creased at predetermined intervals using a jacquard or a dobby.

The method of weaving the yarn is not particularly limited. For example, a shuttleless loom such as a rapier, an air jet, a water jet, a terry, or a normal shuttle loom may be used.
Furthermore, it is woven by a loom with dobby or jacquard capability.

The knitting structure is not particularly limited, such as weft knitting and warp knitting, and it is sufficient that a desired use and a different color tone can be appropriately achieved. For example, in order to obtain a reversible may be a three-dimensional knit, using a polyurethane elastic yarn in addition to polyamide fibers and polyester fibers,
It may be a stretch knitted fabric obtained by knitting.

The dyed product of the present invention is obtained by dyeing a fiber structure using polyester fibers and polyamide fibers with at least a disperse dye and a reactive dye.

The disperse dye is generally a disperse dye for dyeing polyester fibers, and typically includes quinone-based disperse dyes and azo-based disperse dyes. . In the present invention, it is preferable to perform reduction washing after dyeing, but when the disperse dye is mainly quinone-based, alkali reduction washing is preferred in terms of washing fastness, and azo-based one is mainly used. In this case, it is preferable to perform acid reduction washing. In the present invention, it is preferable to dye mainly an azo-based disperse dye having at least one azo group in the molecular structure in view of color development, ease of toning, and expression of different colors. Usually, when dyeing in various colors, two or more dyes are blended, but at least one of the blended dyes is preferably an azo disperse dye having an azo group. Preferably, from the viewpoint of obtaining excellent washing fastness and heather appearance, the ratio of the azo-based disperse dye is preferably 20 to 100% by weight, and more preferably 60 to 60% by weight.
It is more preferable that the content be 100% by weight.

The disperse dye preferably used in the present invention is
There is no particular limitation on the disperse dye having at least one azo group. I. Disperse
Yellow 7,23,163,231, Orange
e 13, 25, 29, 30, Red 50, 54, 6
5, 72, 73, 82, 137, 143, 152, 18
4, Blue 79, 165, 183, 301, 367
and so on.

The reactive dye referred to in the present invention is a water-soluble aniline.
Is an on-dye, generally used for hydroxyl groups and amino groups.
On the other hand, it refers to a dye having a reactive group having a covalent bond.
For example, a monochlorotriazine group represented by the formula [I] (X = C
1, Y = substituent), monofluorotriazine group (X =
F, Y = substituent), carboxypyridiniotriazine group
(X = formula [II], Y = substituent), dichlorotriazine group
(X = Y = Cl) such as vinyl sulfone represented by the formula [III]
Group (Z is -CH = CH_Two), Sulfatoethyl sulfone
Group (Z is -CH_TwoCH_TwoZ¹And Z¹Is -OS
O_ThreeH, -OCOCH _Three, -OPO_ThreeH_Two, -Cl, na
Which leaving group), fluorochloropyri
Bumides represented by Formula V, such as a midine group and a trichloropyrimidine group.
At least one reactive group such as lomoacrylamide group
Dyes that have, but are not limited to,
Has a reactive group as described in Ryokusei
What you do.

In the present invention, the dye is not particularly limited as long as it has one or more of these reactive groups.
A dye having two or more monochlorotriazine groups of the formula [I] in the molecule, and a monochlorotriazine group or monofluorotriazine group of the formula [I] and a sulfatoethylsulfone group of the formula [III] in the same molecule Different reactive group type dyes may be used. For example, in formula [I], Y may include formula [III].

[0032]

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[0033]

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[0034]

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[0035]

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(In the formula [IV], X _{1 to} X ₃ represent Cl or F)

[0037]

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Dyes having such a reactive group include, for example, "Sumifix" and "Sumifix Sup
ra "," Remazol "," Celmazo
l "," Levafix "," Procion "," C
ibacron "," Basilen "," Drima
rene ”,“ Drimalan ”,“ Lanaso ”
l ”,“ Kayacion ”,“ Mikacio ”
n "," Kayacelon React "," Rea
Any of the reactive dyes can provide a dyed fabric having good washing fastness, but in particular, sulfatoethyl sulfone represented by the formula [III] can be used. Reactive groups are protected by a protecting group, and in order to obtain a sufficient fixing amount with a dye having only these reactive groups, it is necessary to remove the protective group and activate the reactive group. In order to completely remove the protecting group, an alkali is often required, and when such a dye is used, a dye which is deprotected even under alkaline pretreatment before dyeing or under neutral to weakly acidic conditions. Therefore, it is particularly necessary to select a bromoacrylamide group, a monochlorotriazine group, a monofluorotriazine group, a carboxy group, etc. A reactive dye having at least one of a pyridiniotriazine group and a fluorochloropyrimidine group is more preferably at least one of a bromoacrylamide group, a monochlorotriazine group, a monofluorotriazine group, and a carboxypyridiniotriazine group. This is a preferred form, since the reactive dye has more excellent coloring properties and heatherness, and tends to improve washing fastness and / or light fastness. The reactive group may be of a different functional group type from, for example, a vinyl sulfone group or a sulfatoethyl sulfone group, and these dyes may be appropriately used commercially available dyes, for example, “Sumifix S”.
upra "dye (Sumitomo Chemical Co., Ltd.)," Cibacr
on ”dye (Ciba Specialty Chemicals Co., Ltd.)
"Lanasol" dye (manufactured by Ciba Specialty Chemicals Co., Ltd.) and "Procion" dye (Mitsui B
ASF Dye Co., Ltd.), "Kayacion" dye (Nippon Kayaku Co., Ltd.), "Kayacelon Reac"
t "dye (manufactured by Nippon Kayaku Co., Ltd.)," Basilen "dye (manufactured by Mitsui BASF Co., Ltd.)," Drimalan "F
Dye (manufactured by Clariant Co., Ltd.), "Drimaren
e "dye (manufactured by Clariant Co., Ltd.) or the like can be used.

In the present invention, by dyeing a polyamide fiber having a structural difference in the longitudinal direction of the fiber with a reactive dye, there is also an effect that a more emphasized expression can be realized as compared with the conventional dyeing with an acidic dye. Since the strength of the heather is influenced by the fashion, it is preferable that the light heather or the strong heather can be controlled by the dyeing method while using the same fabric. In the present invention, these can be controlled by changing the dyeing conditions, and can also be controlled by properly using the molecular weight and reactive group characteristics of the reactive dye.

In the dyed product of the present invention, the polyester fiber and the polyamide fiber may be the same color or different colors, but preferably, the polyester fiber and the polyamide fiber are arranged on one of the warp and the weft, respectively. And it is a woven fabric with an iridescent appearance. This is one of the effects that cannot be obtained by the prior art, and the dyed-colored heat-dyed product is a particularly preferred embodiment of the present invention. Obtaining a different color tone depends on the hues of the disperse dye and the reactive dye, and can be appropriately adjusted to a desired color.

The dyed product comprising the polyester fiber and the polyamide fiber of the present invention is preferably prepared by preparing a cloth or the like by yarn production, knitting or weaving, or nonwoven fabric production by a conventional method, and dyeing with a disperse dye and a reactive dye. The product may be reduced and washed. Especially, the dyed material is JIS L-08.
In the washing fastness A-2 method specified in No. 44, it is preferable that both the discoloration and discoloration and the contamination are quaternary or higher, because they can be developed especially for sports applications and the range of application is expanded.

The means for dyeing is not particularly limited, and it can be properly used such as dip dyeing, printing, thermosol dyeing, ink jet dyeing and the like. However, for thermosol dyeing, the reactive dye is not sufficiently fixed on the polyamide fiber side,
It is preferably carried out by means of dip dyeing, printing, ink jet dyeing, preferably dip dyeing.

In the case of dyeing, it is preferable to perform one-step single-bath dyeing at a dyeing temperature of about 90 to 140 ° C. using a high-pressure jigger dyeing machine or a jet dyeing machine, etc. Preferably 3 or more, more preferably 4
Above, more preferably 4.5 or more. On the other hand, the pH is preferably 8 or less, more preferably 7 or less, and still more preferably 6 or less, in order to sufficiently secure the dyeing on the polyamide side and to improve the color developability and the different color tone. After staining in this manner, reduction washing is performed. In particular, when it is necessary to improve the leveling property on the polyamide fiber side, it is also effective to neutralize the pH of the dyeing bath at the dyeing start stage and shift the pH of the dyeing bath to the acidic side as time and / or temperature rises. It is. When performing the pH slide method, the pH at the initial stage of staining is 6 to
It is preferable to adjust to 9 and slide 2 to 6 on the most acidic side. Further, besides the pH adjuster, sequestering agents, leveling agents, fastness improvers, bath softeners and the like can be appropriately used. Especially when the reactive dye contains a metal,
It is preferred to use sequestering agents. The sequestering agent can be used without any particular limitation. At this time, the pH of the staining solution is carefully selected.

In addition, printing can be carried out by a usual method, and the usual method can be applied to ink jet dyeing as it is. For example, as the ink, in addition to dye and water, a wetting agent, an anti-drying agent, a pH adjusting agent, a preservative, a fastness improving agent, etc. are appropriately adjusted and blended, and the fiber is pre-treated with a fiber structure or a water-soluble polymer. After being applied to the structure, the dye is exhaustively fixed to the fiber by HP or HT steaming or the like. In printing and inkjet dyeing,
When fixing the dye, it is preferable to perform HP steaming in order to improve the fixing of the reactive dye on the polyamide fiber side. It is also possible to combine them appropriately, such as printing after dip dyeing.

In particular, from the viewpoint of improving the shading effect, the different color effect, and the washing fastness, it is preferable to carry out reduction washing with an alkali or an acid after dyeing. As a method, p
It can be carried out by using an H adjuster, a reducing agent such as hydrosulfite, thiourea dioxide, sodium sulfoxylate formaldehyde, zinc sulfoxylate formaldehyde and a surfactant in combination. Here, a particularly preferable production method in the present invention is a method in which a dyeing material mainly using an azo-based disperse dye is subjected to acidic reduction washing. As the acidic reduction cleaning, for example, thiourea dioxide is used as a reducing agent,
Using sodium sulfoxylate formaldehyde, zinc sulfoxylate formaldehyde, or the like, the pH is preferably 2 to 7, more preferably p.
Adjusted to H3-6, preferably at a temperature of 60-120 ° C, more preferably at a temperature of 70-90 ° C, preferably at a temperature of 10-90 ° C.
The treatment is performed for 60 minutes, more preferably for 15 to 40 minutes.

According to the present invention, it is possible to impart a different color tone to a material having only a difference in shading so far, and a natural heather feeling and a new material having a different color can be obtained. Furthermore, various development applications using an excellent fiber structure that compensated for the disadvantages of polyester and polyamide have become possible. This also makes it possible to easily give a new appearance by utilizing the different color effect. Therefore, it can be preferably used for a wide range of uses such as sports wear (general and weakly water-repellent products), women's clothing, and bags.

[0047]

The present invention will be described more specifically with reference to examples.

The following were used for the fabric, dye, leveling agent, reducing detergent and fixing agent. The method for measuring the thickness ratio, the conditions for reduction cleaning, and the conditions for fix treatment in the examples are shown below. The dyed product obtained by dyeing has a washing fastness (JI
SL-0844 A-2 method, using 9 fibers) and light fastness (JIS L-0842) were evaluated, and the color development was visually evaluated in three stages (from dark to light).
×), three levels of heather (from those with strong heather to almost no heather, ○, Δ, ×) , Δ, ×) were evaluated. In addition,% omf shows weight% with respect to a cloth. (Measurement of Natural Stretching Ratio) A tensile test is performed on an undrawn yarn as a sample using Orientec's Tensilon UCT-100, and the elongation E (%) from the measurement start point to completion of necking elongation is measured. The natural stretching ratio was calculated by the following equation.

Natural stretch ratio (times) = 1 + (E / 100) (Measurement of cross-sectional area ratio between thick part and fine part) For each of the ten single filaments taken out of the multifilament using an optical microscope, a fine fineness part and a fine fineness part were obtained. The cross-sectional area ratio was calculated by taking a photograph of the cross section of the fineness portion, and the average value was defined as the cross-sectional area ratio between the thick portion in the fiber longitudinal direction and the detail.

Warp: polyamide thick and thin yarn 6-nylon having a relative viscosity ηr of 2.63 in sulfuric acid is melt-spun at a spinning temperature of 260 ° C. and a spinning speed of 800 m / min to 155 decitex and 17 filaments. A multifilament undrawn yarn was obtained (natural drawing ratio 2.15). The unrolled yarn is supplied at a supply roller speed of 285 m / min using a drawing device in which a hot plate is arranged between the supply roller and the drawing roller.
Non-uniform stretching is performed at a hot plate temperature of 100 ° C. and a stretching roller speed of 600 m / min (drawing ratio 2.1 times).
Polyamide multifilaments having a thickness of 7 filaments and having a thickness in the fiber longitudinal direction were obtained. The cross-sectional area ratio between the thick part and the small part of the single fiber taken out of the polyamide multifilament was 2.0.

Weft: Polyester thick and thin yarn Polyethylene terephthalate having an intrinsic viscosity η of 0.63 was melt spun at a spinning temperature of 290 ° C. and a spinning speed of 2800 m / min to obtain a multifilament undrawn yarn having 120 decitex and 36 filaments ( Natural stretching ratio 1.5). The unstretched yarn was supplied at a supply roller speed of 430 m / using a drawing device having a hot plate disposed between the supply roller and the draw roller.
This was unevenly stretched at a hot plate temperature of 140 ° C. and a stretching roller speed of 600 m / min (drawing ratio: 1.4 times) to obtain a polyester multifilament having a thickness of 85 decitex and 36 filaments in the longitudinal direction of the fiber. The cross-sectional area ratio between the thick part and the small part of the single fiber taken out of the polyester multifilament was 1.6.

The obtained polyamide thick and thin yarns are used as warp yarns and polyester thick and thin yarns as weft yarns.
The woven fabric was woven into a plain fabric at 2.54 cm, set in a greige machine with a 180 ° C tenter, and scoured to obtain a woven fabric. This woven fabric was used as a fabric before dyeing.

Disperse Dye Dye 1: Azo-based disperse dye "Kayalon Polyester" Blue
CR-E 200 (manufactured by Nippon Kayaku Co., Ltd.) Reactive dye Dye 2: Monochlorotriazine-based reactive dye "Procion" Royal H-EXL (Mitsui BASF Dye Co., Ltd.) Dye 3: Monofluorotriazine-based reactive dye "Cibacron" Red "FB (manufactured by Ciba Specialty Chemicals) Acid dye Dye 4: Acid dye" Telon "Blue AFN Dye 5: Acid dye" Telon "Red ABL (manufactured by Dystar) Leveling agent Leveling agent 1 : "Alvegar" B (manufactured by Ciba Specialty Chemicals) Leveling agent 2: "New Bonn" TS400 (Nichika Chemical Co., Ltd.)
Washing conditions for acidic reduction (treatment at 80 ° C. for 20 minutes) “Superlight” C (manufactured by Mitsubishi Gas Chemical Co., Ltd.) 4 g / L acetic acid / sodium acetate buffer pH 5 “Demol” N (manufactured by Kao Corporation) 0 0.5 g / L fix treatment condition (treatment at 80 ° C. for 20 minutes) “Nylon Fix” 501 2% omf (manufactured by SENKA CORPORATION) Example 1 Dye having a similar hue (royal blue) to the fabric before dyeing 1 (2% omf) and dye 2 (1% omf),
Then, using Leveling Agent 1 (2% omf), the pH was adjusted to 5 with an acetic acid / sodium acetate buffer, dyeing was performed at 120 ° C. for 60 minutes, and acid reduction washing was performed to obtain dyed fabric 1. The washing fastness and color development of this dyed fabric were evaluated, and the results are shown in Table 1.
It was shown to.

Example 2 Dye 1 (2% omf) and Dye 3 (1% omf), which are dyes having significantly different hues (blue and red) from the cloth before dyeing, and leveling agent 1 (2% omf) were used. The solution was adjusted to pH 5 with an acetic acid / sodium acetate buffer, dyed at 120 ° C. for 60 minutes, and subjected to acidic reduction washing to obtain a dyed fabric 2. The washing fastness, color developability and heterochromaticity of this dyed fabric were evaluated, and the results are shown in Table 1.

Comparative Example 1 Dye 1 (2% omf) and Dye 4 (1% omf), which are dyes having similar hues (royal blue) to the undyed fabric,
Then, using Leveling Agent 2 (2% omf), the pH was adjusted to 5 with an acetic acid / sodium acetate buffer, dyed at 120 ° C. for 60 minutes, and subjected to fix treatment to obtain dyed fabric 3. Evaluate the washing fastness and color development of this dyed fabric,
The results are shown in Table 1.

Comparative Example 2 Dye 1 (2% omf) and Dye 5 (1% omf), which are dyes having greatly different hues (blue and red) from the cloth before dyeing, and leveling agent 2 (2% omf) were used. The dyed fabric 4 was obtained by adjusting the pH to 5 with an acetic acid / sodium acetate buffer solution, dyeing at 120 ° C. for 60 minutes, and performing a fix treatment. The washing fastness, color developability and heterochromaticity of this dyed fabric were evaluated, and the results are shown in Table 1.

Comparative Example 3 A dyed fabric 5 was obtained in the same manner as in Example 2, except that Dye 5 was used instead of Dye 3. The resulting fabric was discolored and faded by reduction washing, and became a dull and dark color. The washing fastness, color developability and heterochromaticity of this dyed fabric were evaluated, and the results are shown in Table 1.

Comparative Example 4 Dye 5 (1% omf) and leveling agent 2 (2
% Omf) in acetic acid / sodium acetate buffer.
The mixture was adjusted to H5, dyed at 90 ° C. for 60 minutes, and subjected to fix treatment to obtain dyed fabric 6. The washing fastness, color developability and heterochromaticity of this dyed fabric were evaluated, and the results are shown in Table 1.

[0059]

[Table 1]

From these results, it is found that when polyester and polyamide are dyed with dyes of similar hues, they are excellent in coloring property, washing fastness and heather tone, and when dyed with dyes having different hues, they have different tone, coloring property and washing property. It was found that it exhibited a novel appearance with excellent fastness and heather appearance.

[0061]

It has been found that the dyed product of the present invention has a novel appearance as well as excellent washing fastness and can be applied to various uses such as clothing, sports, and bags.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) D06P 3/872 D06P 3/872 F term (Reference) 4H057 AA01 AA02 BA07 BA08 CA08 CB16 CB34 CC03 DA01 DA30 DA34 EA02 GA21

Claims (9)

[Claims] 1. A fiber structure comprising a polyamide fiber and a polyester fiber, wherein at least one of the polyester fiber and the polyamide fiber has a fine shape in the longitudinal direction of the fiber, and is dyed with at least a disperse dye and a reactive dye. Dyeing that has been done. 2. The dyed product according to claim 1, wherein the polyamide fiber has a thick and thin form, and the cross-sectional area ratio of the thick part to the detail is 1: 1.2 to 1: 5. 3. The polyester fiber has a thick and thin shape, and the cross-sectional area ratio between the thick part and the detail is thick part: detail = 1: 1.2 to 1: 5.
The dyed product according to claim 1 or 2, wherein 4. The dyed product according to any one of claims 1 to 3, wherein both discoloration and discoloration and staining are quaternary or higher in the washing fastness method A-2 specified in JIS L-0844. 5. The dyed product according to claim 1, wherein the disperse dye contains a disperse dye having at least an azo group. 6. The reactive dye according to claim 1, which has at least one of a bromoacrylamide group, a monochlorotriazine group, a monofluorotriazine group, a carboxypyridiniotriazine group, and a fluorochloropyrimidine group.
The dyed product according to any one of the above. 7. A fiber structure comprising a polyamide fiber and a polyester fiber, wherein at least one of the polyester fiber and the polyamide fiber has a fine shape in the longitudinal direction of the fiber, comprising at least a disperse dye and a reactive dye. A method for producing a dyed material which is dyed with a dye solution and then reduced and washed. 8. The method for producing a dyed product according to claim 7, wherein the disperse dye contains at least one disperse dye containing at least an azo group, and is subjected to reduction washing at pH 2 to 7 after dyeing. 9. The method according to claim 7, wherein the reactive dye has at least one of a bromoacrylamide group, a monochlorotriazine group, a monofluorotriazine group, a carboxypyridiniotriazine group, and a fluorochloropyrimidine group. 3. The method for producing a dyed product according to item 1.