JPH0441738A - Dyed fabric comprising polyester fiber and polyamide fiber cord and its preparation - Google Patents

Abstract

PURPOSE:To provide the objective web comprising polyamide fibers and the fibers of a polyester copolymerized with a constant amount of polyethylene glycol wherein the polyester fibers have specific dyeability, and having both the original touch and physical properties of the polyamide fibers and the functionality of the polyester fibers. CONSTITUTION:A dyed web comprises (A) the fibers of a/ordinary pressure- dyeable polyester copolymerized with 6.0-10wt.% of polyethylene glycol having an average mol. wt. of 500-4000, the fibers having a black brightness of <=17% when dyed at 98 deg.C, and (B) polyamide fibers. The web is prepared by dyeing with a disperse dye and an acidic dye without a carrier at a temperature <=98 deg.C and subsequently subjecting the dyed web to a finishing processing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a dyed product of a fabric made of a mixture of polyester fiber and polyamide fiber, and a method for producing the same.

More specifically, by mixing polyester that can be dyed under normal pressure, polyester fiber and polyamide fiber can maximize the original texture and physical properties of polyamide fiber without damaging the polyamide fiber, and also have the functionality of polyester. and a method for producing the same.

[Conventional technology] Fabrics made of polyamide fibers can be dyed under normal pressure, have good dyeability, and have excellent physical properties such as high yarn strength. There are drawbacks such as the lack of

For this reason, it has been attempted to compensate for these deficiencies by mixing polyester with excellent functionality, which polyamide fibers lack.

On the other hand, although polyester fibers have high fiber strength, excellent heat-setting properties and dimensional stability, and are less likely to yellow than polyamides, they have the problem of lacking dyeability. That is, polyester can compensate for the drawbacks of polyamide to some extent, but due to the dyeing resistance of polyester, when dyed under the same conditions as polyamide, the color will be pale or not dyed at all, and the same color property as polyamide cannot be obtained.

For example, 130, which is the normal dyeing temperature for polyester.
Even if it is dyed at ~135° C., the same color property with polyamide cannot be obtained, and there is a problem that the texture of the polyamide is impaired and poor coloring becomes large.

Therefore, the isochromism between polyester and polyamide,
The reality is that dyed products of polyester and polyamide blend fabrics have been produced by finding a compromise between the texture, strength, and elongation of the polyamides used in the blend.

Regarding polyester fibers, the following pressure-dyeable polyesters have been proposed so far.

5 mol% (8% by weight) of sodium sulfoisophthalate
The cationic dye-dyable polyester copolymerized above is, for example, JP-A-61-34022, JP-A-60-218.
47, JP-A-60-17311!5, JP-A-60-
These are disclosed in Japanese Patent No. 88190 and the like.

Also, easily dyeable polyester fibers whose internal structure has been changed by spinning at a high speed of 5,000 to 8,000 cm/min are disclosed, for example, in JP-A-59-59911. This is disclosed in Japanese Patent Application Laid-Open No. 58-18739.

Furthermore, easily dyeable polyester fibers copolymerized with aromatic dicarboxylic acids, aliphatic dicarboxylic acids, or aliphatic diols are disclosed in, for example, JP-A-51-130320 and JP-A-57-10169. .

[Problems to be solved by the invention] However, although the cationic dye-dyeable polyester copolymerized with sodium sulfoisophthalic acid has improved dyeability, it has low yarn strength, poor heat resistance, and bulk processing. cannot be applied, poor chemical resistance, poor light fastness of cationic dyes, large contamination of cationic dyes in the dyeing machine, poor elasticity recovery of processed yarn, lack of bulky and stretch properties, and bulge in texture. There are problems such as a lack of feeling.

In addition, although the easily dyeable polyester fiber produced by high-speed spinning is a polyester fiber that is easier to dye than conventional polyester fiber, it cannot be said that it is completely dyeable under normal pressure.
A dyeing temperature of 110 to 120°C is required to dye a deep color, and the fiber lacks dimensional stability due to its low shrinkage rate.
There are problems such as the texture is lacking in firmness, mesh misalignment defects are likely to occur, it is difficult to spin fine-grained yarn, temporary twisting cannot be performed at the same time as drawing, and excessive spinning equipment is required.

Easy-to-dye polyester fibers copolymerized with aromatic dicarboxylic acids, aliphatic dicarboxylic acids, or aliphatic diols are
Although it is getting closer to becoming dyeable under normal pressure, there are many problems.

For example, polyester copolymerized with aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid, etc. has low heat resistance, significantly reduces textured yarn stretch recovery and light fastness, and has significant poor coloring. There is a problem. Among aliphatic diols, polyesters copolymerized with butanediol, neopentyl glycol, cyclohexane dimetatool, and polytetramethylene glycol, isophthalic acid, 1,2-bis(phenoxy)ethane-4,4' dicarboxylic acid, etc. For polyester copolymerized with aromatic dicarboxylic acids, the copolymerization rate must be 15% by weight or more to make it dyeable under atmospheric pressure. There are problems such as decreased quality, poor coloring, and poor spinning properties. In this regard, among aliphatic diols, polyester copolymerized with polyethylene glycol can be dyed under normal pressure even if the copolymerization rate is low, but there has been a problem with same color property when mixed with polyamide.

In view of the shortcomings of the prior art, the present inventors have made extensive studies on polyester fibers mixed with polyamide, and have found that by dyeing a fabric in which polyester fibers having a specific composition are mixed with polyamide fibers, the same color property can be greatly improved. The present invention was developed based on the discovery that this can be improved.

That is, an object of the present invention is to provide a dyed product fabric made of a mixed fabric of polyester fibers and polyamide fibers having excellent color constancy, and a method for producing the same.

[Means for Solving the Problems] In order to achieve the above object, the mixed fabric dyed product has the following configuration. That is, in a dyed fabric made of polyester fibers and polyamide fibers, the polyester is an atmospheric pressure dyeable polyester copolymerized with 6.0 to 10% by weight of polyethylene glycol having an average molecular weight of 500 to 4,000, and This is a dyed fabric made of polyester fibers and polyamide fibers, characterized in that the black brightness upon dyeing at °C is 17% or less.

Further, the method for producing a dyed mixed fabric product of polyester fibers and polyamide fibers of the present invention has the following configuration in order to achieve the above object.

That is, after relaxing and scouring a fabric made of polyamide fibers and pressure-dyeable polyester fibers copolymerized with polyethylene glycol having an average molecular weight of 500 to 4,000 in an amount of 6.0 to 10% by weight based on the weight of the polymer, the fabric is heated at a temperature of 98°C or less. This is a method for producing a mixed fabric dyed product of polyester fiber and polyamide fiber, which is characterized by dyeing with a disperse dye and an acid dye without using a carrier.

The polyester targeted by the present invention has terephthalic acid as its main acid component, and at least one type of glycol,
Preferably, it is a polyester whose main glycol component is at least one alkylene glycol selected from ethylene glycol, trimethylene glycol, and tetramethylene glycol. Particularly preferred is a polyester in which 90 mol% or more of the constituent units are ethylene glycol units.

The atmospheric pressure dyeable polyester used in the present invention must be one obtained by copolymerizing the above polyester with 6.0 to 10% by weight of polyethylene glycol having an average molecular weight of 500 to 4,000. When the average molecular weight is less than 500,
A part of the polyethylene glycol added during polyester polymerization scatters under the reaction conditions of high temperature and reduced pressure, and the copolymerization rate does not become constant, resulting in variations in physical properties such as strength and elongation and shrinkage rate of the obtained polyester yarn. This may cause defects in the final product, such as uneven dyeing, etc., which may occur during dyeing. Also,
In order to copolymerize polyethylene glycol with a low molecular weight of less than 500 to improve dyeability, it is necessary to increase the number of copolymerized moles considerably compared to polyethylene glycol with a high molecular weight. The softening point decreases and the quality of the final product decreases.

On the other hand, when polyethylene glycol with an average molecular weight exceeding 4000 is used, the amount of high molecular weight that is not copolymerized in the polyester increases, which not only reduces the dyeability but also causes the dye to fade when the fabric is heat-treated after dyeing. It causes various kinds of decreases in color fastness, such as bleed-out and a decrease in light fastness, especially fading fastness.

Further, if the copolymerization rate of polyethylene glycol is less than 6.0% by weight, dyeability is insufficient and normal pressure dyeability cannot be obtained. On the other hand, if it exceeds 10% by weight, even if the dyeability is sufficient, not only will the light fastness and alkali resistance decrease, but also physical properties such as stretch recovery when processed yarn will deteriorate, resulting in poor quality of the final product. Decrease in quality.

In addition, since polyethylene glycol is copolymerized with polyester, there is a tendency for the oxidative decomposition resistance to be lower than that of ordinary polyester, so it is preferable to blend an antioxidant into the polyester to improve this. It will be done.

Preferred antioxidants include, for example, hindered phenol compounds which are phenol derivatives having sterically hindered substituents adjacent to the phenolic hydroxyl group.

Representative examples of hindered phenol compounds include 1.
3.5 trimethyl-2,4,6-1 (3,5-di-t)
tertbutylphenol), 2.6-sheet tertbutyl-p-cresol, triethylene glycol-bis[
3-(3-tertbutyl 5-methyl 4-hydroxyphenyl)propionate], 1,6-hexanethiolubis[3-(3,5-di-tertbutyl-4-hydroxyphenyl)propionate, pentaerythrityl-tetrakis [3-(3゜5-G-tert butyl-4
-hydroxyphenyl)propionate, octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 3,5-di-tert-butyl-4-hydroxy-penzyl phosphonate diethyl ester, 1,3.5 -trimethyl-2,4,6-
Examples include tris(3,5-tertbutyl-4-hydroxybenzyl)benzene.

When blending the hindered phenol compound into the polyester, the blending amount is preferably 0.5 to 10% by weight based on the polyethylene glycol to be copolymerized, from the viewpoints of oxidative decomposition resistance and prevention of nozzle staining.

The pressure-dyeable polyester used in the present invention may be copolymerized with other copolymer components or blended with other polymers, as necessary, within the scope of achieving the object of the present invention. For example, pentaerythritol, trimethylolpropane,
It may also be one in which a small proportion of a chain branching agent such as trimellitic acid or boric acid is copolymerized.

In addition, arbitrary additives such as matting agents such as titanium oxide, ultraviolet absorbers, flame retardants, pigments, etc. may be included as necessary.

The polyamide targeted by the present invention includes nylon-4
, nylon-6, nylon-66, nylon-7, nylon-12, and dicarboxylic acids such as 1,7-heptanedicarboxylic acid, decamethylene dicarboxylic acid and bis(
(p-aminocyclohexyl)methane, and copolyamides of the above-mentioned polyamides.

Among these, nylon-6 and nylon-66 are particularly preferred.

Further, the polycondensation method is not particularly limited, and is usually a known polyamide polycondensation method, such as an ordinary pressure polymerization method often employed for nylon-6, etc.
The pressure polymerization method employed in 6 etc. can be employed regardless of whether it is a batch method or a continuous method.

Although the polyester fiber used in the present invention is not particularly limited, it is preferable to use polyester processed yarn. Examples of preferred processed yarns include:
In terms of the durability of the fabric and the ease of obtaining processed yarn, the strength is 3. Preferably, θ~6.0 g/d.

The polyester processed yarn preferably used in the present invention has good physical properties such as a stretch recovery rate of 16 to 40%.

If the stretch recovery rate is less than 16%, the bulkiness will be poor, the texture will be flat, and the stretch and bulkiness will be insufficient. On the other hand, if the stretch recovery rate exceeds 40%, the material will have a fluffy texture, and the original texture of the polyamide to be mixed cannot be fully utilized.

In the present invention, the dyeing temperature when dyeing a fabric made of polyester fibers and polyamide fibers must be 98° C. or lower. The dyeing temperature preferably used is 50~
The temperature is 98°C or lower, more preferably 80 to 98°C or lower. If the temperature is less than 50°C, both polyester fibers and polyamide fibers will have insufficient dyeability. Furthermore, when dyeing at a temperature exceeding 98° C., not only the texture of the polyamide fibers deteriorates and the fibers become thinner, but also a pressure dyeing machine is required, which is not preferable.

In the polyester fiber used in the present invention, 198 of the polyester fiber must be 17% or less. L9g is 1
If it exceeds 7%, the color development when dyeing at 98°C is insufficient.

The polyester fibers used in the present invention are L98 and Ll:l
It is preferable that the difference from IO is 1.0 or less.

If the difference between L98 and L130 exceeds 1.0%,
The color development during dyeing at 98° C. is insufficient compared to the color development during dyeing at 130° C., and complete normal pressure dyeability cannot be obtained.

In the present invention, as described above, L9g and Li2O refer to the black lightness when dyeing at 98°C and the black lightness when dyeing at 130°C, respectively, and refer to the values measured by the following method.

<L9g, Li2O measurement method> A sock knitted fabric (-mouthpiece knitted fabric) was knitted from processed polyester filament yarn, and then Sanded G- was used as a scouring agent.
29 (manufactured by Sanyo Kasei Co., Ltd.) at 98°C by the usual method.
After scouring under boiling for 0 minutes and air drying, it was set in a dry state at 180° C. for 3 minutes in a free state, and then dyed, washed with water, reduced washed, washed with water, and air dried under the conditions described below.

Next, the brightness of the black color was measured using a multi-light source spectral color needle MSC-2 model (
The L value (%) is measured using Suga Test Instruments Co., Ltd.).

The black lightness (L value) when the dyeing temperature is 98°C is L98,
The black lightness (L value) when the dyeing temperature is 130°C is Li
Let it be 2O.

Staining conditions: (a) Dye: Dianix Black BG-PS
(200% product, manufactured by Mitsubishi Kasei Co., Ltd.) Dyeing concentration near % ovf Dyeing aid: Nikka Sunsalt #1200 (manufactured by NICCA CHEMICAL CO., LTD.) Dyeing aid concentration/: 0.5g/ 1 Dyeing bath PH :5 Dyeing bath ratio: 1/:1iO (b) Water washing (c) Reduction cleaning detergent Detergent concentration Hydrosulfate 2g/] Caustic soda 2g/l Sanded G-291g/l (manufactured by Sanyo Kasei Co., Ltd.) Washing temperature , time = 80° C., 20 minutes Bath ratio: 1/30 (d) Washing with water, air drying In the present invention, the degree of dyeing with a disperse dye refers to a value measured by the following method.

<Method for measuring the degree of dyeing with disperse dyes> A sock knitted fabric (-mouthpiece knitted fabric) was knitted from polyester filament processed yarn in the same manner as the measurement method for L98 and Li2O described above, and was scoured, air-dried, and dry heat centrifuged. Afterwards, it is dyed using a dark blue disperse dye under the conditions described below, washed with water, washed with water, and air-dried.

Next, the surface reflection of the dyed knitted fabric was measured using an integral sphere coloring device "Color Seven" (manufactured by Kurabo Industries, Ltd.), and the degree of dyeing (K/S) was calculated using the Kubelka-Munk dyeing method at the maximum absorption wavelength.
value).

Dyeing conditions: (a) Dye: Sumikaron Blue 5E-
BLP (manufactured by Sumitomo Chemical Co., Ltd.) ■, 0%owf'Mike
ton P Red SL (Mitsui Toatsu Chemical Co., Ltd.) 0.5% owf Dianix orange U-3E (Mitsubishi Kasei Co., Ltd.) 0.5% owf Dyeing aid: Nikka Sunsalt RE-3 (Nika (manufactured by Kagaku Kogyo Co., Ltd.) Dyeing aid concentration: 0.5 g/l Dyeing bath PH: 6 Dyeing bath ratio: l/30 Dyeing temperature: 98°C Dyeing time: 60 mjn However, for polyester homopolymer filament processed yarn, carrier Add and dye.

Carrier: Teryl carrier-■-10 (Kusei Kagaku)
(manufactured by Sanyo Chemical Co., Ltd.) Carrier concentration: 5% owf (b) Water washing (c) Cleaning agent: Sanded G-291 g/l (manufactured by Sanyo Chemical Co., Ltd.) Sodium carbonate 0.5 g/l Washing temperature washing time = 60°C, 20 minute bath ratio: 1/30 (d) Washing with water, air drying The single yarn fineness of the polyester fiber used in the present invention is preferably 0.1 to 2nd from the viewpoint of color development and texture.

The total fineness of the polyester fiber used in the present invention is preferably 10 to 500 d from the viewpoint of improving the texture of the fabric.

As the processed polyester fiber yarn preferably used in the present invention, it is preferable to use a bulky processed yarn. This is because the textured yarn is required to have a fluffy feel and bulkiness, and the textured yarn and polyamide fiber can be easily blended together by twisting, entangling, or other means.

Preferred examples of the specific form of the bulky textured yarn include temporary twist textured yarn and buleriya textured yarn (two-stage heat treatment system). Other preferred examples include pressed yarn and twisted yarn.

The method for producing bulky textured yarn is not particularly limited, and ordinary swirl heat treatment processing can be applied to temporary twisted yarn and bulerier textured yarn. In this case, since the pressure-dyeable polyester used in the present invention has good heat resistance, a processing heat treatment temperature of 200 to 230° C., which is the same as that of ordinary polyester, can be applied. In addition to the rotating type, it can also be manufactured using processing methods such as a friction disk type, a friction belt type, and a fluid swirl nozzle type.

In addition to the normally drawn yarn, the raw yarn to be used as the bulky textured yarn may preferably be a semi-drawn yarn (highly oriented undrawn yarn) that is simultaneously drawn and processed during the bulky process. Note that the semi-drawn yarn has the advantage that the stretch recovery rate of the processed yarn is higher than that of the normally drawn yarn.

The cutting elongation of the polyester fiber used in the present invention is 30 to
50% is preferred.

Strength of polyester processed yarn and drawn yarn in the present invention,
Elongation, stretch recovery rate of processed yarn, flood shrinkage rate, and light fastness are values evaluated as follows.

<Strength and elongation of drawn yarn and processed yarn> Polyester yarn is extracted from the pirn of raw yarn and processed yarn, or by disassembling the knitted fabric as necessary.

This was tensile tested using an Instron tensile tester model 1122 (manufactured by Instron, commercially available) with a sample length of 20 cm and a tensile speed of 2.
Cutting strength (g) when extended to the cutting point at 0 mark/min
Measure. This strength is divided by the actual total fineness (D) to determine the cutting strength (g/d). In addition, the elongation (%) relative to the original length when elongated to the cutting point is determined.

Stretching and contraction recovery rate of processed yarn〉 Make a 10-turn skein of processed yarn with a circumference of 80 cm, and
A sample is used that has been treated in a non-tension state with warm water at 0° C. for 20 minutes and then dried for 2 hours or more. Then, read 11 by applying a constant load of 0.1 g/d for 2 minutes in water.

Change the load to 2 mg/d and read 12 after 2 minutes.

From this, the expansion/contraction recovery rate is calculated using the following formula.

((11-I2)/111 xlOo (%) Flood shrinkage rate of drawn yarn) A skein similar to the above was made, a load of O, 1 g/d was applied, and I
Read o. Next, the load was removed, spring water treatment was carried out at 98° C. for 30 minutes under no tension, and after air drying, a load of 0.1 g/d was applied, ■□ was read, and the flood shrinkage rate was calculated by the following formula.

((10-11) /Io) xloo (%)
Light fastness> The raw polyester yarn is knitted into a sock knitted fabric, and is scoured and dry heat set in the same manner as the evaluation method for black lightness. Next, it is dyed in a light color with a red disperse dye under the following dyeing conditions.

Dye: Kayacelon Red E-2Bl.

(manufactured by Nippon Kayaku Co., Ltd.) Dye concentration: 20.1% owf' The dyeing aid, dye bath pH, and dye bath ratio are the same as the evaluation method for black lightness.

In addition, the dyeing temperature is 9 for normal pressure dyeable polyester.
Dyeing is carried out at 8°C, or 130°C in the case of polyester homopolymer.

Next, wash with running water and air dry to obtain J I5-LO842 (
The light fastness is measured according to the carbon arc exposure method (3rd exposure method). Grade 5 is given to dyed products with little discoloration or fading due to arc lamp irradiation, and grades are graded sequentially up to grade 1 (poor).
Judging in stages.

The proportion of the atmospheric pressure dyeable polyester fiber used in the present invention to be mixed with the polyamide fiber is determined from the viewpoint of exhibiting the functionality (physical properties, strength, texture) of the polyester, and maintaining a good texture and hue of the polyamide fiber. It is preferable to contain 30 to 70% by weight of pressure-dyeable polyester.

30 to 70% by weight of such atmospheric pressure dyeable polyester fibers
From the same viewpoint as above, it is preferable that the proportion of the yarn mixed with the polyamide fiber in the fabric is at least 10% by weight or more.

From the viewpoint of texture, the mixed form of the atmospheric pressure dyeable polyester processed yarn and polyamide fiber used in the present invention is a mixed woven fabric in which the atmospheric pressure dyeable polyester fiber is arranged in the warp or weft yarn, or a woven fabric in which the atmospheric pressure dyeable polyester fiber is arranged in the warp or weft yarn. A reversible knitted fabric placed on the front or back side is preferred. In the case of a mixed woven fabric, it is preferable to use polyester for the warp yarns, as this further enhances functionality.

If polyamide fiber is used for the weft yarn, a soft texture effect can be obtained. In the case of a reversible knitted fabric, for example, it is preferable to use polyamide fibers on the back side and polyester on the front side, since this provides water absorption and hygroscopicity on the back side and shape retention on the front side.

Other methods of mixing include blending, intertwisting, doubling, and entangling, which are preferable because they increase the degree of dispersion between the pressure-dyable polyester fibers and the polyamide fibers, further improving the same color property, texture, and functionality. .

In particular, core-sheath composite yarns and intertwisted yarns, which are made by mixing pressure-dyable polyester fibers in the core and polyamide fibers in the sheath, retain the texture of polyamide fibers while maintaining stretchability and wrinkle resistance. It is preferable because it can also provide functionality such as.

The form of the fabric is not particularly limited, and includes woven fabrics, knitted fabrics, and non-woven fabrics.

The present invention will be further explained below with reference to Examples.

[Example code] Note that the evaluation items in the examples were measured as follows.

<Intrinsic viscosity of polyester> After dissolving the dried sample in an orthochlorophenol solvent, it was measured at 25°C using an Ostwald viscometer.

Bending stiffness and bending hysteresis of fabric〉Texture measuring instrument K
Measurement was performed using ES-FB-2 type (manufactured by KATOTEC Co., Ltd.).

Wrinkle resistance rate of fabric> Measured according to JIS-L1096 (method: Sensant method).

Pleat retention> Six test pieces of 30 cm in length and 20 cm in width were taken and pressed with a permanent press machine Jak-754 model (Juki Co., Ltd.).
(manufactured by) at a temperature of 100 to 105°C, a pressure of 80 g/cIil,
After pressing with a press time of 20 seconds, 3 out of 6 sheets are 2
After leaving it on a 4 o'clock surface, the appearance was compared with a standard photograph and the pleats were graded (5th grade, 4th grade... pleats are clear and good, 3rd grade... average, 2nd grade, 1st grade... ...Difficult to form pleats).

Next, the remaining three sheets were placed in an automatic reversing whirlpool washing machine VH-11.
50 model (Toshiba Corporation) at 40°C with a 0.2% aqueous solution of slightly alkaline synthetic detergent 250 for 10 minutes, rinsed for 2 minutes, and washed 5 times. After air drying, pleatability was graded in the same manner as above. The judgment value was expressed as the average value of three sheets.

In the examples and comparative examples described later, data such as bending rigidity and wrinkle resistance do not specify the warp yarn or weft yarn of the fabric.
It represents the average value of warp and weft threads.

<Washing fastness> Graded according to JIS L 0844 (Roundermeter Penal Code).

<Same color> The hue of polyamide dyed with disperse dye and acid dye in the same bath as polyester was compared and judged (grade 5, grade 4...
The hues are extremely similar and good, 3rd grade...somewhat similar and average, 2nd grade, 1st grade...the hues are similar and poor).

Dyeing Concentration> Dyeing concentration (%owf) indicates the proportion to the weight of polyester in the case of disperse dyes, and the proportion to the weight of polyamide in the case of acid dyes.

Overall evaluation: 20 for the best, ○ for the good
, those with some problems: △, and those with problems: ×.

Example 1 <Production of normal pressure dyeable polyester fiber> 240-250
A slurry of 86 parts of terephthalic acid and 39 parts of ethylene glycol was fed over 3 hours into an esterification reaction tank containing 106 parts of low weight bis(2hydroxyethyl) terephthalate at 3 hours, and water was distilled off. After distilling off water for an additional hour, 106 parts of the reactant was transferred to a polymerization reactor and heated at 250°C with 0.03 part of phosphoric acid and 0.01 part of methyl-phenylpolysiloxane (silicone oil manufactured by Toshiba Silicone Corporation). Stir and mix for 5 minutes. Next, 0.04 parts of cobalt acetate and 0.04 parts of antimony trioxide.
0.04 parts of antioxidant Irganox-1010 (manufactured by Ciba Geikie) and 8.8 parts of polyethylene glycol with an average molecular weight of 1000 were added, and after 5 minutes, 0.0
5 parts of titanium dioxide was added as a 20% by weight ethylene glycol slurry, the temperature was gradually raised from 250°C to 280°C, and the pressure was reduced from atmospheric pressure to a high vacuum of 1 mmHg or less for polycondensation, resulting in an intrinsic viscosity of 0. 70, modified polyethylene terephthalate having a softening point temperature of 256°C was obtained.

The average molecular weight in the polyester thus obtained is 1
The copolymerization rate of polyethylene glycol in No. 000 was 8.0% by weight (■).

Further, copolymerization was carried out in exactly the same manner as above except that 6.6 parts and 11.0 parts of polyethylene glycol with an average molecular weight of 1000 were added, respectively, and the copolymerization rate of polyethylene glycol with an average molecular weight of 1000 was 6.0% by weight ( ■) ,
A copolymerized polyester of 10.0% by weight (■) was obtained.

The obtained ester chips were heated to an atmospheric temperature of 150℃ in a dryer.
It was dried at a temperature of 1 mmHg or less for 5 hours. The dried chips were spun at a spinning temperature of 2 using a spinneret with 24 holes.
Spinning was carried out at 90° C. and a spinning speed of 1350 m/min. Subsequently, the hot roller temperature was 80°C, the hot plate temperature was 165°C,
It was drawn at a drawing ratio of 3.37 times and a drawing speed of 800 v/win to obtain a drawn yarn of 24 filaments of 75 denier.

The resulting drawn yarn (■) had yarn physical properties of strength 4.7 g/d, elongation 39%, and water conduction shrinkage rate (hereinafter referred to as boiling yield) 11%.

The drawn yarn (2) had a strength of 5.1 g/d, an elongation of 33%, and a boiling yield of 10%, and the drawn yarn (2) had a strength of 4-6 g/d, an elongation of 40%, and a boiling yield of 16%.

Each of the obtained drawn yarns was subjected to a swirl heat treatment to obtain a bulky textured yarn. Processing conditions are hot plate temperature 210℃, number of processed twists: 8
The feed rate was 430 times/m1 and the knee was 0.2%. Table 1 shows the stretch recovery rate, processed yarn strength, L9g and Li2O, degree of dyeing, and light fastness of this processed yarn.

Next, the relative viscosity is 2.3 (30°C, 1 g/10
Polymer: ε-caproamide (nylon-6) (0 ml of 96% H2SO4 solution) was melted at 265°C and wound at 1300 m/1n using a 24-hole die to obtain an undrawn yarn. After stretching this undrawn yarn 3.8 times,
Heat treatment was performed at 170° C. to obtain a 75D drawn yarn with a strength of 5.8 g/d and an elongation of 40%.

Next, the above-mentioned polyester processed yarn and polyamide fiber were inter-knitted into 150D double yarns to knit a double-sided reversible inter-knitted fabric with polyester on the front side and polyamide on the back side. The polyester mixing ratio was 50% by weight, and the knitting conditions were 20 cages and a hook diameter of 20 inches.

The resulting knitted fabric was refined, dyed, and finished according to conventional methods. In addition, the dyeing was done using blue disperse dye Re5oline Bl.
ue PBL (manufactured by Bayer) 0.5% 0vf and acid dye Nylonan Blue N-GFL (manufactured by Sandoz) 0.5% owf were used in a single bath at 98° C. for 45 minutes without using a carrier. After dyeing, it was soaped in a weak alkaline bath containing 1 g/α of soda ash and 0.5 g/α of nonionic detergent at 70° C. for 20 minutes, and washed with water.

Table 1 shows the same color properties and overall evaluation results of mixed fabric dyed products.
Shown below.

As is clear from Table 1, the average molecular weight of the present invention is ■000
All of the mixed fabric dyed products of polyester processed yarn copolymerized with 6.0 to 10.0% by weight of polyethylene glycol and polyamide have a higher concentration of normal polyester than those using other copolymerized polyester processed yarns. It has the same strength, stretch recovery rate, and light fastness as processed yarn, and can be dyed under normal pressure to produce a good black color (L value: 12.4%), and is also the same color as the polyamide on the back side. It was good.

In addition, the texture was soft and smooth, with just the right amount of waist and tension. There were no problems with the processability, knitting properties, and dyeing processability of the processed yarn.

(Hereinafter, blank spaces) Comparative Examples 1 to 5 Polymerization and yarn spinning were carried out in exactly the same manner as in Example 1, except that the copolymerization rate of polyethylene glycol having an average molecular weight of 1000 or the average molecular weight of polyethylene glycol was changed.

In Comparative Example 1, the copolymerization rate of polyethylene glycol was 4.0.
In terms of weight%, Comparative Example 2 is a case where the copolymerization rate of polyethylene glycol is 12% by weight, Comparative Example 3 is a case where the average molecular weight of polyethylene glycol is 200, and Comparative Example 4 is a case where the average molecular weight of polyethylene glycol is Comparative Example 5 is a case where a polyester homopolymer is used.

The strength of the drawn yarn is 5.2 g/d, 4.0 g
/ d, 4.2 g/d, 4.2 g/d,
It was 5.4 g/d.

The results of knitting and evaluation under the same conditions as in Example 1 are shown below in Table 1.

All of the comparative examples had problems compared to the examples of the present invention.

Example 2 The texture and functionality of mixed fabrics were examined by changing the mixing ratio of polyester and polyamide. In addition, this average molecular weight 10
Polymerization was carried out in the same manner as in Example 1, except that 765% by weight of polyethylene glycol No. 00 was copolymerized, and the spinning temperature was 290°C.
Spun at a spinning speed of 3000 cm/min to obtain 280 denier 48
The filament was made into a semi-drawn yarn (highly oriented undrawn yarn), which was then drawn in a swirling yarn process and simultaneously temporarily twisted at a hot plate temperature of 210°C to obtain a 150 denier 48 filament atmospheric pressure dyeable polyester bulky yarn. . The strength of semi-drawn yarn is 2.4g.
/d, elongation 220%, strength of processed yarn was 4.0 g/d, elongation 16.0%, boiling yield 6.7%, and stretch recovery rate 34.5%.

Next, the pressure-dyeable polyester processed yarn was mixed and twisted with polyamide at various mixing ratios ranging from 17% by weight to 83% by weight to obtain a 450 denier polyester-polyamide twisted yarn. Note that 100% polyester and 100% polyamide products were similarly evaluated for comparison. Next, a 2/2 twill fabric was woven using the intertwisted yarns as warp yarns and weft yarns. Next, it was scoured, dyed, and finished according to conventional methods. The finished width was 158 cm, the finished density was 55 warp threads/1 nch, and a weft thread density of 53 threads/jnch. In addition, the dyeing was carried out using the disperse dye Re5o11 of Example 1.
ne Blue FBL (manufactured by Bayer) 0.5%
owf' and acid dye Nylosan Blue N-G
One bath using FL (manufactured by Sandoz) 0.5% owf 98
It was dyed at ℃ for 45 minutes without using a carrier, and soaped in the same manner as in Example 1.

When evaluating the black color development and degree of dyeing of processed yarn,
L98 is 12.5%, Li2O is l", 2%, and the difference between L98 and Li2O is 0.3%. The degree of dyeing of the processed yarn is 2.
It was 2.9. In addition, the same color property of a double-sided reversible knitted product obtained by inter-knitting this processed yarn with polyamide fibers in the same manner as in Example 1 was grade 5.

Other evaluation results for the blue finished product are shown in Table 2.

From Table 2, the mixing ratio of polyester is 16.7 to 8363
Those in the range of % by weight had soft bendability, a smooth texture, were resistant to wrinkles, and had sufficient pleat retention after washing.

Among them, the mixing ratio of atmospheric pressure dyeable polyester is 30 to 70.
In the case of weight%, the effect was remarkable.

(Left below) Example 3 Polyethylene glycol with an average molecular weight of 1000 was 7.5
Polymerization was carried out in the same manner as in Example 1, except that the weight percent copolymerization was carried out, and drawing was carried out in the same manner as in Example 1 to obtain a drawn yarn of 150 denier and 30 filaments.

Next, a bulky textured yarn was obtained by swirling heat treatment. Processing conditions are: hot plate temperature 215℃, number of processed twists 2400 times/m
The s feed rate was set to 0.1%. The strength of processed yarn is 4.5g
/d, elongation 29.8%, boiling yield 6.2%, stretch recovery rate 32
．． It was 2%.

Next, the processed yarn was mixed with the polyamide fiber of Example 1 at 150%
D double yarns were inter-knitted to knit a double-sided reversible inter-knitted fabric with polyester on the front side and polyamide on the back side. The blending rate of polyester was 50% by weight, and the knitting conditions were 20 gauge and a hook diameter of 20 inches.

The resulting knitted fabric was refined, dyed, and finished according to conventional methods.

For dyeing, use the following three colors of disperse dyes and acid dyes.
Staining was carried out at 8°C for 60 minutes without using a carrier.

<Dye> Hue: Charcoal gray Disperse dye: Re5ollne Blue FBL (manufactured by Bayer) 0.4% ovf Resolfne Red PB (200%) (manufactured by Bayer) 0.2% owf Miketon, P, Yellow P2O (Mitsui Toatsu) Kagaku Co., Ltd. 0.2% owf acidic dye: Lanas
et Gray G (manufactured by Ciba Geigy) 0.7
2%owfLanaset Red G (manufactured by Ciba Geigy) o,oe%owfLana
set Yellow 2R (manufactured by Ciba Geigy) 0.27% ovf Hue Nybrown Disperse Dye Dianfx Blue BG-PS (
200%) (manufactured by Mitsubishi Kasei Corporation) 0.3%owf Resollne Rublne BL (manufactured by Bayer AG) 0.2%owr Dianjx Orange U-8E (manufactured by Mitsubishi Kasei Corporation) Acid dye: Kayakalan Gray BL (Japan) Kayakalan Brown GL (manufactured by Nippon Kayaku Co., Ltd.) Kayakalan Yel low GL (manufactured by Nippon Kayaku Co., Ltd.) Color tone: Navy pull Dispersed dye: Sumlkaron Blue 5E-B
LP (manufactured by Sumima Kagaku Co., Ltd.) Miketon, P, Red SL (manufactured by Mitsui Toatsu Chemical Co., Ltd.) 0.5%owf'Djani
x Orange U-8E (manufactured by Mitsubishi Kasei Corporation) 0.
5% ovf Acid dye: Sunchromine, F, Blue
MB (120%) (manufactured by Sumima Kagaku Co., Ltd.) 1.7%o
vf Sunchrom1ne, P, Yellow MD (manufactured by Sumitomo Chemical Co., Ltd.) 1.7% ovf The evaluation results are shown in Table 3. In the table, evaluation of dyeing degree is for disperse dye, and other evaluation is for disperse dye and acid dye. It was stained with.

From Table 3, the dyed products obtained by the present invention have extremely high dyeing degrees of polyester in charcoal gray, brown, and navy blue hues, and also have excellent color constancy between polyester and polyamide, light fastness, and washing fastness. It was of extremely high quality.

(The following is a blank space) Comparative Example 6 Polymerization and yarn spinning were carried out in the same manner as in Example 1, except that polyester homopolymer was used instead of copolymerized polyester. Next, bulk processing was performed in the same manner as in Example 3. The strength of the processed yarn was 4.8 g/d, the elongation was 29.9%, the boiling yield was 5.8%, and the stretch recovery rate was 40.2%. Next, in the same manner as in Example 3, the material was inter-knitted with polyamide, dyed, and finished to obtain an inter-knitted fabric with polyamide. However, the dyeing is carried out using a carrier (
The test was carried out by adding 5% owf of Teryl Carrier V-tO1 (manufactured by Meisei Kagaku Co., Ltd.).

The evaluation results are also shown in Table 3.

Table 3 shows that the degree of dyeing of polyester is low despite carrier dyeing.

In addition, there were problems with the same color property, light fastness, washing fastness, and workability (carrier removal) between polyester and polyamide.

[Effects of the Invention] According to the present invention, a mixed fabric dyed product of atmospheric pressure dyeable polyester processed yarn and polyamide, which has excellent same color property and also has excellent texture and functionality, and a method for producing the same are provided. It became possible to provide.

Claims (2)

[Claims] (1) In a dyed fabric made of polyester fibers and polyamide fibers, polyester has an average molecular weight of 50
0-4000 polyethylene glycol 6.0-10
A dyed fabric comprising polyester fibers and polyamide fibers, which is a pressure-dyeable polyester copolymerized in weight percent, and has a black brightness of 17% or less when dyed at 98°C. (2) A fabric made of normal pressure dyeable polyester fibers and polyamide fibers copolymerized with 6.0 to 10% by weight of polyethylene glycol having an average molecular weight of 500 to 4,000 at 98°C.
A method for producing a dyed fabric made of polyester fibers and polyamide fibers, which comprises dyeing with a disperse dye and an acid dye without using a carrier at the following temperatures, and then finishing the fabric.