JPH11269781A - Article using one yarn together with another and its dyeing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an article using a polytrimethylene terephthalate yarn together with an elastic yarn having excellent fastness to dyeing, by dyeing the article with a readily alkali-soluble disperse dye in a dyeing bath containing a nonreactive type disperse dye and a reactive type disperse dye and subjecting the article to reduction cleaning. SOLUTION: An article using one yarn together with another such as a knitted fabric of alternating knitting, using a polytrimethylene yarn together with an elastic yarn such as a polyurethane-based yarn is dyed in a dyeing bath containing a nonreactive type disperse dye and a reactive disperse dye at 95-130 deg.C, preferably 95-110 deg.C for 20-40 minutes and then subjected to reduction cleaning to give the objective article using the polytrimethylene terephthalate yarn dyed with the nonreactive type disperse dye together with the elastic yarn dyed with the reactive type disperse dye.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for dyeing a mixed product in which polytrimethylene terephthalate fiber and elastic fiber are mixed. More specifically, the present invention provides a dyed product of a mixed product having good coloring properties, excellent fastness performance, and improved peeling.

[0002]

2. Description of the Related Art In general, polyester fibers are dyed using a disperse dye. However, depending on the application, they are often used in combination with other fibers. When the mixed product is dyed, the elastic fibers are contaminated with the disperse dye, so that the color fastness to washing and the like is greatly reduced.

For this reason, it has heretofore been practiced to remove the disperse dye contaminating the elastic fiber by exhaustive reduction washing. However, although the dyeing fastness is considerably improved by this, the elastic fiber is stretched, for example, by elongation. The drawback called so-called eyeburn due to exposure to the surface of the fabric at the time or the like becomes remarkable. This is a phenomenon that occurs because the dye is dyed on the polyester fiber but the dye is not dyed on the elastic fiber. In order to meet this demand, it has been proposed to use a disperse dye that is dyed on the elastic fiber even after reduction washing, for example, a reactive disperse dye. Have been.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a blended product which meets such a demand and has improved blinding.

[0005]

As a result of various studies on the above-mentioned problems, the present inventor has found that the above-mentioned objects can be achieved by mixing elastic fibers with specific fibers and using specific disperse dyes. And completed the present invention. That is, the present invention relates to a dyed product of a mixed product in which polytrimethylene terephthalate fiber and elastic fiber are mixed, wherein the non-reactive disperse dye and the reactive disperse dye are dyed on the polytrimethylene terephthalate fiber, The fibers are mainly dyed with reactive disperse dyes, as well as non-reactive disperse dyes and reactive types when dyeing mixed products in which polytrimethylene terephthalate fibers and elastic fibers are mixed. The present invention provides a method for dyeing a mixed product, which comprises dyeing with a disperse dye, and further performing reduction washing.

Hereinafter, the present invention will be described in detail. The polytrimethylene terephthalate fiber used in the present invention refers to a polyester fiber having a trimethylene terephthalate unit as a main repeating unit, and the trimethylene terephthalate unit is about 50 mol% or more, preferably 70 mol% or more, and more preferably 80 mol%. Above, more preferably 90 mol% or more. Therefore, the total amount of the other acid component and / or glycol component as the third component is within a range of about 50 mol% or less, preferably 30 mol% or less, further 20 mol% or less, and more preferably 10 mol% or less. Polytrimethylene terephthalate contained.

[0007] Polytrimethylene terephthalate is produced by condensing terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions. In this production process, an appropriate one or two or more third components may be added to form a copolymerized polyester, or
Polyesters other than polytrimethylene terephthalate such as polyethylene terephthalate, nylon, and polytrimethylene terephthalate may be separately produced and then blended or composite-spun (sheath core, side-by-side, etc.).

The third component to be added includes aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexane dicarboxylic acid, etc.), and aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.). ), Aliphatic glycols (ethylene glycol, 1,2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexanediol, etc.), aromatic dioxy compounds (hydroquinone bisphenol A, etc.), aliphatic glycols containing aromatics (1,4
-Bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol, polypropylene glycol, etc.), aliphatic oxycarboxylic acids (ω
-Oxycaproic acid), aromatic oxycarboxylic acids (P
-Oxybenzoic acid, etc.). Compounds having one or more ester-forming functional groups (such as benzoic acid or glycerin) can also be used as long as the polymer is substantially linear.

Further, matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricating agents such as aerosil, and antioxidants such as hindered phenol derivatives. An oxidizing agent, a flame retardant, an antistatic agent, a pigment, a fluorescent brightener, an infrared absorber, an antifoaming agent, and the like may be contained. The fiber cross section is round,
It may be polygonal, such as triangular, L-shaped, T-shaped, Y-shaped, W-shaped, Yatsuha-shaped, flat, dogbone-shaped, multilobal, hollow, or irregular.

Further, the form of the yarn may be a spun yarn such as a ring spun yarn or an open-end spun yarn, a multifilament raw yarn (including an ultrafine yarn) having a single denier of about 0.1 to 5 denier, a sweet twisted yarn or the like. Strong twisted yarn, mixed yarn, false twisted yarn (PO
Y (including a drawn false twisted yarn), and a fluid jet processed yarn such as a so-called Taslan processed yarn. In addition, other fibers such as natural fibers such as wool are blended (silospan or silofil, etc.) and entangled blended fibers (with high shrinkage yarns) within a range of usually 30% by weight or less within a range not to impair the object of the present invention. May be mixed by means such as different shrinkage mixed fiber yarns), alternate twisting, composite false twisting (elongation difference false twisting, etc.), two-feed taslan processing, or the like.

In the present invention, elastic fibers such as polyurethane-based, polyester-based, and polyetherester-based elastic fibers can be used as the elastic fibers. For example, dry-spun or melt-spun ordinary polyurethane-based elastic fibers can be used. The polymer and spinning method are not particularly limited. The denier of the elastic fiber is 10 to 560 denier, preferably 20
~ 420 denier is suitable, and the elongation at break is 40
Those having 0% to 1000% and having excellent elasticity and not impairing the elasticity at around 190 ° C. in the normal processing temperature of the presetting step at the time of dyeing are preferred.

For example, it comprises a copolymerized polyalkylene ether diol, mainly a polyurethane obtained from an aromatic diisocyanate composed of 4,4'-diphenylmethane diisocyanate and a difunctional diamine, and a polyurethane having a number average molecular weight of 6,000 to 9,
500, and the number average molecular weight of the urea portion is 650 to 95
Polyurethane elastic fibers having a 0% and a 300% modulus of 0.20 g / denier or less include, but are not limited to.

The set ratio of the elastic yarn used in the present invention is 20%.
Is more preferably 40% or more and 95% or less. If the setting ratio of the elastic yarn is lower than 20%, defects such as poor width stoppage during fabric processing and curling of the end of the fabric are liable to occur. May not be satisfied. On the other hand, the set rate is 95%
When the value exceeds, so-called settling occurs in which the elastic yarn is stretched due to heat during processing of the fabric, and the power reduction and elongation recovery functions of the product are not sufficiently exhibited. Therefore, the set ratio of the elastic yarn used in the present invention is preferably 20% or more, more preferably 40% or more and 95% or less. In particular, by using such an elastic fiber having a set ratio of 40% or more and 95% or less, defects such as warp streaks generated in a warp knitted fabric are further reduced. There is also an advantage that the finished shape of the finished product is maintained even after repeated wearing, that is, it is excellent in so-called shape memory.

Here, the set ratio is a value obtained by the following measurement and mathematical formula. The length L0 of the elastic yarn in a tensionless and linear state is extended and fixed to a length of 1.5 times, and then inserted into a steam box as it is and sealed, and filled with live steam. Thirty seconds after maintaining the temperature in the steam box at 120 ° C. while maintaining ± 1 ° C., the steam in the steam box was discharged, and the elastic yarn was immediately taken out.
Relax to a length of 0 or less and leave at room temperature for 16 hours. Again, make the elastic thread tensionless and straight,
Assuming the length L1 at that time, the set ratio is defined by the following equation. Set rate (%) = [(L1−L0) /0.5L0] × 1
00

In the present invention, the above 20% to 95%
Elastic fibers having the following set ratios are obtained by dry spinning, wet spinning, melt spinning polyurethane polymers and melt spinning polyetherester block copolymers. For example, an elastic fiber having such a set rate by dry spinning of a polyurethane polymer is obtained by reacting a polymer diol having hydroxyl groups at both terminal groups with a number average molecular weight of 500 to 5,000, an organic diisocyanate, and a chain extender having a polyfunctional active hydrogen atom. Low-molecular-weight diol having hydrogen groups at both terminals of a linear or branched alkylene group or a divalent alicyclic hydrocarbon group having 2 to 10 carbon atoms, based on 100 parts by weight of the polyurethane polymer obtained by the reaction. (A) and a polymer diol having a number average molecular weight of 400 to 3000 (B)
Is a reaction product of a mixture of (A) / (B) = 1 to 99 with an organic diisocyanate, a terminal is a hydrogen group, and a number average molecular weight of 10,000 to 40,000 having a urethane group concentration of 3 meq / g or more. Thermoplastic urethane resin of 1 to
It is a polyurethane elastic fiber added with 15 parts by weight.

Here, one of the raw materials of the polyurethane polymer
The high molecular weight diol is a substantially linear polymer having a molecular weight of 500 to 5,000 having hydroxyl groups at both ends, for example, polyoxyethylene glycol, polyoxypropylene glycol, polyoxytetramethylene glycol, Homopolyether diols such as polyoxypentamethylene glycol or C2-6
Copolymerized polyether diols composed of at least one kind of oxyalkylene; one or more dibasic acids such as adipic acid, sebacic acid, maleic acid, itaconic acid, azelaic acid, malonic acid and ethylene glycol; −
Propylene glycol, 1,3-propylene glycol, 2,2-dimethyl-1,3-propanediol,
1,4-butanediol, 1,3-butanediol, hexamethylene glycol, diethylene glycol, 1,
Polyester diol obtained from one or more glycols such as 10-decanediol, 1,3-dimethylolcyclohexane and 1,4-dimethylolcyclohexane; or polyesteramide diol; polyester ether diol; poly-ε-caprolactone diol , Polylactone diols such as polyvalerolactone diol; and polycarbonate diols. Preferably, polyoxytetramethylene glycol, copolymerized poly (tetramethylene neopentylene)
Ether diol, copolymerized poly (tetramethylene 2-
Methylbutylene) ether diol.

As the organic diisocyanate, for example, all of the aliphatic, alicyclic and aromatic diisocyanates which are soluble or liquid under the reaction conditions can be applied. For example, methylene-bis (4-phenyl isocyanate),
Methylene-bis (3-methyl-4-phenyl isocyanate), 2,4-tolylene diisocyanate, 2,6-
Tolylene diisocyanate, m- and p-xylylene diisocyanate, α, α, α ′, α′-tetramethyl-xylylene diisocyanate, m- and p-phenylene diisocyanate, 4,4′-dimethyl-1,3-xylylene diisocyanate Isocyanate, 1-alkylphenylene-
2,4 and 2,6-diisocyanate, 3- (α-isocyanatoethyl) phenyl isocyanate, 2,6-
Diethylphenylene-1,4-diisocyanate, diphenyl-dimethylmethane-4,4-diisocyanate,
Diphenyl ether-4,4'-diisocyanate, naphthylene-1,5-diisocyanate, 1,6-hexamethylene diisocyanate, methylene-bis (4-cyclohexyl isocyanate), 1,3- and 1,4-cyclohexylene diisocyanate, trimethylene Examples thereof include diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, and isophorone diisocyanate. Preferably, it is methylene-bis (4-phenylisocyanate).

Examples of the chain extender having a polyfunctional active hydrogen atom include hydrazine, polyhydrazine, and linear or branched aliphatic, alicyclic and aromatic active hydrogen having 2 to 10 carbon atoms. A compound having an amino group,
For example, ethylenediamine, 1,2 propylenediamine,
Diamines such as diamines having a urea group described in JP-A-5-155814, hydroxylamine, water and the like, and low molecular weight glycols such as ethylene glycol, 1,2-propylene glycol, 1,3-
Propylene glycol, 2,2-dimethyl-1,3-propanediol, 1,4-butanediol, 1,3-butanediol, hexamethylene glycol, diethylene glycol, 1,10-decanediol, 1,3-dimethylolcyclohexane , 1,4-dimethylolcyclohexane and the like can be used. Preferably, they are ethylenediamine and 1,2-propylenediamine.

As the terminal terminator having a monofunctional active hydrogen atom, for example, dialkylamine such as diethylamine is used. These chain extenders and terminal stoppers may be used alone or in combination of two or more. In the present invention, the mixed product in which polytrimethylene terephthalate fiber and elastic fiber are mixed refers to a mixture of yarn and / or a knitted fabric or the like in which both are used. For example, elastic fiber is used as a so-called bare yarn. And weave and knit,
Polytrimethylene terephthalate fiber and nylon fiber,
Length of synthetic fibers such as polyethylene terephthalate fiber, acrylic fiber, polypropylene, etc., semi-synthetic fibers such as copper ammonia rayon, viscose rayon, purified cellulose fiber, acetate fiber, and natural fibers such as cotton, wool and silk. It is knitted or woven using fibers or staple fibers in a composite form (for example, in the form of covering, core spun yarn, interlaced entangled yarn, air covering yarn, or twisted yarn). It may be knitted and woven with methylene terephthalate fiber.

For example, the knitting machine will be described in detail. The knitting machine can be a tricot knitting machine, a Russell knitting machine or a circular knitting machine. The denier of the yarn to be used or the denier, knitting model, gauge You just have to select Examples of the knitting structure include a half structure of a two reed structure in a tricot knitting machine, a knitting structure using polytrimethylene terephthalate fiber for a first reed of a satin structure, and a change structure by a combination of these structures. In the case of a Russell knitting machine, a method of using polytrimethylene terephthalate fiber in the ground portion of a power net structure or a satin net structure can be cited. Methods include, but are not limited to.

The mixing ratio of the elastic fibers may be in a very wide range depending on the structure and the thickness of the yarn used, but is preferably 5 to 30%. In addition, the draft when compounding the elastic yarn is 1.
The ratio is preferably 5 to 3.5 times, and is appropriately selected in accordance with the commercial value. Furthermore, in order to more stably obtain a high-grade fiber having no warp, the denier ratio (du / de) of the elastic fiber and the polytrimethylene terephthalate fiber should be 0.1 to 1%.
5, preferably 0.5 to 9, more preferably 1 to 8. When the denier ratio (du / de) is more than 15, the elastic fiber ratio is too high, and the elastic fibers may be exposed too much on the surface and the quality may not be maintained, and the denier ratio (du / de) may be 0. If it is less than 1, the elastic force of the elastic fiber at the time of knitting is weak, and it becomes difficult to balance the stress with the polytrimethylene terephthalate fiber, and the quality may not be maintained.

A feature of the present invention is that a non-reactive disperse dye and a reactive disperse dye are used in dyeing such a mixed product, and the obtained mixed product is a non-reactive disperse dye for polytrimethylene terephthalate fiber. The disperse dye and the reactive disperse dye are dyed, and the elastic fiber is mainly dyed with the reactive disperse dye. It is. In the present invention, when the mixed product comprising polytrimethylene terephthalate fiber and elastic fiber is dyed with only the reactive disperse dye, there is no peeling and the fastness performance is good, but the color development of the polytrimethylene terephthalate fiber is good. It becomes insufficient, and only poor quality products can be obtained. In order to enhance the color developability, a large amount of the dye is required, so that there is a problem that the cost is increased.

In the present invention, the fact that the elastic fiber is mainly dyed with the reactive disperse dye means that the non-reactive disperse dye dyed on the elastic fiber is reductively decomposed by a reducing agent or hot alkali during reduction washing. It means that hydrolysis or solubilization almost removes the elastic fiber from the elastic fiber, but a part of the decomposition residue of the non-reactive disperse dye remains in the elastic fiber. This decomposed residue is often a non-reactive disperse dye which has been decolorized but not completely colorless. The elastic fiber of the present invention has a degree of coloring of the non-reactive disperse dye of the decolorized decomposed residue, when dyed with the reactive disperse dye, does not cause a hue change in the same system as the hue of the reactive disperse dye, and has a fastness. It is included after reduction washing to the extent that it does not lower.

The ratio of the reactive disperse dye to be mixed with the non-reactive disperse dye in the dyeing of a mixed product comprising polytrimethylene terephthalate fiber and elastic fiber may be appropriately determined according to the hue and the dyeing concentration. Is preferably mixed at 5 to 50%. The non-reactive disperse dye used for dyeing is a disperse dye that is usually used for dyeing polyethylene terephthalate fiber, and is not particularly limited.
Since it is necessary to remove the dye dyed on the elastic fiber, it is preferable to use a dye which is easily decomposed and reduced at the time of reduction washing from the viewpoint of the color fastness and the same color. The reactive disperse dye is obtained by adding a reactive group via a linking group to an ordinary disperse dye as a base, and is generally a poorly water-soluble or insoluble dye represented by the formula (I). .

[0025]

Embedded image In the formula, D represents a pigment base residue, X represents a fluorine atom, an alkyl group or an aryl group which may have a substituent,
-OR ¹ group, -SR ¹ group or

[0026]

Embedded image A group (R ¹ and R ^{2 each} represent a hydrogen atom or an alkyl group or an aryl group which may have a substituent);
Represents one or more numbers.

The base structure of such a disperse dye is as follows:
Monoazo, disazo, anthraquinone, nitro, stilbene, methine, azamethine, polymethine, berynone, quinophthalone, naphthoimine,
One. In particular, monoazo, disazo and anthraquinone compounds are preferably used. And these dye bases may contain heavy metals as needed.

Examples of the alkyl group corresponding to X in the above formula (I) include lower alkyl groups having 1 to 5 carbon atoms, particularly 1 to 3 carbon atoms, such as methyl group, ethyl group and propyl group. Include a phenyl group.
The hydrogen atom of these groups is substituted with, for example, a halogen atom, a nitro group, a cyano group, a hydroxyl group, an alkyl group or an alkoxy group having 1 to 5 carbon atoms, particularly 1 to 3, other than -SO ₃ H and -COOH groups. Specific examples of such an alkyl group or aryl group having a substituent include a trichloromethyl group and a p-nitrophenyl group.

R ¹ and R ² in the —OR ¹ group, the —SR ¹ group, and the group of the formula (II) are a hydrogen atom or an alkyl group or an aryl group which may have a substituent. Examples of the alkyl group aryl group which may have a substituent corresponding to ¹ and R ² include those exemplified for X above. Therefore, specific examples of the —OR ¹ group include a hydroxyl group, a methoxy group, an ethoxy group,
2,2-trifluoropropoxy group, pentoxy group, ethoxyoxymethoxy group, β-hydroxyethoxy group, phenoxy group, p-methylphenoxy group,
o-nitrophenoxy group and the like. Also, -S
Specific examples of the R ¹ group include a thiol group, a methylthio group, an ethylthio group, and a phenylthio group.

Specific examples of the group of the formula (II) include a monoalkylamino group such as an amino group, a methylamino group and an ethylamino group, a β-chloroethylamino group, a β-methoxyethylamino group, a γ- And a hydroxypropylamine group. The mixed fabric comprising the polytrimethylene terephthalate fiber and the elastic fiber is relaxed, scoured and dyed after mixed knitting or weaving. It is preferred that the scouring be performed at a temperature of 60 to 98 ° C. as relaxed as possible, because it enhances the stretch recovery of the fabric. In addition, when performing morphological fixation before dyeing, presetting may be performed with dry heat at a temperature of 170 to 200 ° C. In particular, in the case of a fabric in which curling is a problem, such as a two-way tricot, 190
It is preferable to perform dry heat presetting at a high temperature of ~ 200 ° C.

The dyeing temperature for dyeing a mixed product of polytrimethylene terephthalate fiber and elastic fiber with a non-reactive disperse dye and a reactive disperse dye is generally preferably 95 ° C. or higher, and the upper limit dyeing temperature is up to 130 ° C. In order to increase the dye distribution ratio to the polytrimethylene terephthalate fiber, the temperature is particularly preferably from 95 to 110 ° C. In the case of dyeing at 95 ° C. as in the case of pantyhose, the L value is particularly preferably 10 to 20.
For a deep color such as black or an extremely dark color, the use of a carrier is preferable from the viewpoint of color development, and examples thereof include phenylphenol (ortho, para, meso) and methylnaphthalene carriers. The dyeing time is preferably 20 to 40 minutes. As for the dyeing conditions other than the dyeing temperature and time, any conditions can be used as long as the polyethylene terephthalate fiber is usually dyed.
The dyeing bath ratio and the like are appropriately set in consideration of the type of the article to be dyed, the equipment used, and the dyeing method.

The above-mentioned dyeing operation can be carried out by a batch type or a continuous type using an apparatus such as a winch, a zicker, a beam dyeer, a liquid jet dyeer or the like. In addition,
A printing method other than dip dyeing can be used. As a post-treatment after dyeing, reduction washing using a reducing agent is performed to improve the color fastness. Since the fastness performance is almost proportional to the concentration of the non-reactive disperse dye adsorbed on the elastic fiber, it is important to reduce and remove the non-reactive disperse dye in the elastic fiber. Next, after the reduction washing, finishing may be performed according to a conventional method, but it is preferable to set the final set temperature 10 ° C. lower than the preset temperature.
If necessary, alkali reduction treatment may be performed before dyeing. In the case of performing the alkali reduction treatment, it is preferable to perform the treatment at 100 ° C. or lower in any of the processing methods regardless of the batch method (immersion method) or the continuous method (pad method).
When the treatment temperature is 100 ° C. or higher, the physical properties of the elastic fiber may be reduced. The dyeing method of the present invention is a dyeing method with high color reproducibility, and also has a feature that color variation among dyeing batches is small. Hereinafter, the present invention will be described with reference to examples.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Evaluation items in the examples were measured as follows. (1) Color development The surface of the fabric after dyeing and reduction washing is measured with a spectrophotometer (Mac).
beth2020). The smaller the value of the L value, the better the color developability. (2) Washing fastness The washing fastness was evaluated according to JIS-L-0884. No fading,
Good grades were assigned a fifth grade, and were sequentially determined to be a first grade (poor).

(3) Stripping The cloth was stretched about twice, and the comparison between the hue density of the polytrimethylene terephthalate fiber and the hue density of the elastic fiber was visually judged, and the following grading was performed. Grade 5: Little difference in hue and density between polytrimethylene terephthalate fiber and elastic fiber. Tertiary: Difference in hue and density between polytrimethylene terephthalate fiber and elastic fiber is small. Primary: The difference in hue and density between the polytrimethylene terephthalate fiber and the elastic fiber is extremely high. <Method for producing polytrimethylene terephthalate fiber> ηsp
The polytrimethylene terephthalate of /c=0.8 is spun at a spinning temperature of 265 ° C. and a spinning speed of 1200 m / min to obtain an undrawn yarn, then a hot roll temperature of 60 ° C., a hot plate temperature of 140 ° C., and a draw ratio of 3 times. , Stretching speed 800m
Per minute, and a drawn yarn of 50d / 36f was obtained.

[0035]

Example 1 Polytrimethylene terephthalate fiber 50d / 36f obtained by the above-mentioned production method and polyurethane elastic fiber (trade name: Leica SC, manufactured by Asahi Kasei Corporation) 40 denier (1
And wound up while giving a 00% elongation draft) using a tricot knitting machine under the following conditions. Subsequently, 90 ° C
After relaxing with hot water at 190 ° C. for 40 seconds and drying, a dyeing was carried out using a circular dyeing machine in the following dyeing bath and conditions. <Tricot knitting conditions> Knitting machine Tricot knitting machine 28 gauge knitting structure Half runner length Front 160cm / 480 course Back 80cm / 480 course

<Dye bath composition> (1) Dye Non-reactive disperse dye Dianical Scarmine UN-SE (manufactured by Dystar) 1.5% owf Dianix Blue UN-SE (manufactured by Dystar) 1.5% owf reaction Type disperse dye Red dye of the following structure 0.6% owf

[0037]

Embedded image 0.6% owf blue dye with the following structure

[0038]

Embedded image

(2) Others Nikka San Salt RM-340 (manufactured by Nika Chemical Co., Ltd.) 0.6 g / L sodium acetate 0.5 g / L acetic acid 0.5 cc / L <Dyeing conditions> Dyeing temperature × time: 110 ° C. × 30 minutes bath ratio 1:30

After the completion of the dyeing, the residual dyeing solution was discharged from the dyeing machine, water was added to the dyeing machine, and the temperature was raised to 80 ° C., and the following chemicals were added to adjust the concentration to the following. Sodium hydrosulfite 2 g / L caustic soda 2 g / L Sunmol RC-700 (manufactured by Nika Chemical Co., Ltd.) 1 g / L dimethylpolysiloxane (molecular weight 10,000, kinematic viscosity 300 cst) 0.3 g / L Bath ratio 1:30

The reduced washing solution is applied to a dyed product at 80 ° C. for 10 hours.
The dyeing was thoroughly rinsed with hot water and water, and then finished by a dry heat set at 180 ° C. for 30 seconds. In the dyed product obtained, the polytrimethylene terephthalate fiber was dyed with a non-reactive disperse dye and a reactive disperse dye, and the elastic fiber was dyed with a reactive disperse dye. The dyeability of the resulting mixed product was evaluated for color development, washing fastness, and peeling, and the results are shown in Table 1.

[0042]

Example 2 The same polytrimethylene terephthalate fiber 50d / 36f as in Example 1 but polyurethane-based elastic fiber 2
A pantyhose was prepared by covering, knitting, presetting, and sewing 0 denier and a set rate of 51% (trade name: Leica FCS, manufactured by Asahi Kasei Corporation) under the following conditions. <Covering conditions> Elastic fiber draft 3.4 times Winding twist number 500 turns / meter <Knitting conditions> Number of needles 400 Hook diameter 4 inches Diameter Number of leg knitting courses 2000 courses <Setting conditions> Setting temperature 120 ° C Steam set time 30 seconds

The pantyhose was dyed and reduced and washed in the same manner as in Example 1 except that the dyeing temperature was adjusted to 98 ° C. by using a drum dyeing machine. The pantyhose was set on a last and then steamed at 120 ° C. for 20 seconds. Furthermore, it completed by setting and drying for 30 seconds with 110 degreeC hot air. In the obtained dyed product, the polytrimethylene terephthalate fiber was dyed with the non-reactive disperse dye and the reactive disperse dye, and the elastic fiber was dyed with the reactive disperse dye. The dyeability of the resulting mixed product was evaluated for color development, washing fastness, and peeling, and the results are shown in Table 1.

[0044]

Comparative Example 1 Table 1 shows the results of evaluation in Example 1 except that a 50d / 17f polyethylene terephthalate fiber was used (except that the dyeing temperature was only 130 ° C.).

Comparative Example 2 The same knitted fabric as in Example 1 was used, and dyeing was carried out in the same manner as in Example 1, except that only the non-reactive disperse dye was used for dyeing. However, the concentration of the non-reactive disperse dye was 2.0% owf. In the obtained dyed product, the polytrimethylene terephthalate fiber was dyed with a non-reactive disperse dye, and the elastic fiber was not dyed. The same evaluation was performed on the obtained dyed product, and the results are shown in Table 1.

[0045]

Comparative Example 3 The same knitted fabric as in Example 1 was used, but the dyeing process was performed in the same manner as in Example 1 except that only the reactive disperse dye was used. However, the concentration of the reactive disperse dye was 2.0% owf. The obtained dyed product was dyed with a polytrimethylene terephthalate fiber and an elastic fiber with a reactive disperse dye. The same evaluation was performed on the obtained dyed product, and the results are shown in Table 1. From the results shown in Table 1, the dyed product of the mixed fabric of the polytrimethylene terephthalate fiber and the elastic fiber obtained by the method of the present invention has a good coloring property and fastness to dyeing, and has a high commercial value without peeling. It can be seen that it is.

[0046]

[Table 1]

[0047]

According to the present invention, it is possible to provide a mixed article in which polytrimethylene terephthalate fiber and elastic fiber having good coloring properties, excellent fastness performance and improved peeling are mixed.

Claims (2)

[Claims] 1. A dyed product of a mixed product in which polytrimethylene terephthalate fiber and elastic fiber are mixed, wherein the non-reactive disperse dye and the reactive disperse dye are dyed on the polytrimethylene terephthalate fiber, and the elastic fiber Is a mixed product characterized by being mainly dyed with a reactive disperse dye. 2. A method of dyeing a mixed product in which polytrimethylene terephthalate fiber and elastic fiber are mixed, dyeing the mixed product with a non-reactive disperse dye and a reactive disperse dye, and further performing reduction washing. Dyeing method for mixed products.