KR100669082B1 - Process for dyeing high functional synthetic fiber using vat dye - Google Patents

Abstract

A method for dyeing a high functional synthetic fiber by using a vat dye is provided to enhance the friction, cleaning and daylight fastness. Vat dye for SP with the particle size of 0.01-0.25 micrometer is used. A closed type jet dyeing device is used in order to prevent the oxidation of the jet dye. The liquid ratio of dye is set as 1:5-20. Sodium hydrosulfite and sodium carbonate of 5-20 g/l are used as the reducing agents. The reduction injection temperature is 80-100 degrees in centigrade in order to increase the reducing effect. The sodium hydrosulfite is firstly injected and thereafter the sodium carbonate is injected in order to prevent the over-reduction.

Description

Process for dyeing high functional synthetic fiber using vat dye

Figure 1 shows the particle size analysis results of the bat dye CIBANON OLIVE S-MD.

Figure 2 shows the particle size analysis results of the bat dye CIBANON BROWN BR-MD.

Figure 3 shows the particle size analysis results of the bat dye CIBANON BLACK B-01 MD.

Figure 4 shows the particle size analysis results of the bat dye CIBANON RED 2B MD.

Figure 5 shows the particle size analysis test results of the bat dye CIBANON GREEN B-MD.

Figure 6 shows the particle size analysis test results of the bat dye DANTANTREN BLUE C-R PLUS.

Figure 7 shows the results of the particle size analysis of the bat dye INDANTHREN BROWN C-BR PLUS.

Figure 8 shows the particle size analysis test results of the bat dye DANTANREN NAVY BLUE C-BL PLUS.

9 illustrates the results of particle size analysis of the bat dye DANT HREN DIRECT BLACK 5689.

10 is a dyeing process in the experiment of the change of the reducing agent input temperature.

11 is a dyeing process chart in the experiment of the conditions according to the concentration change of the reducing agent.

Figures 12 and 13 compare L / Pink Disperse, Vat Dye Pictures

Figures 14 and 15 compare L / Red Disperse, Vat dye picture

Figures 16 and 17 are Brown Disperse, Vat Dye Picture Comparison

Figures 18 and 19 compare the Violet Disperse, Vat dye picture

20 and 21 is a Yellow Disperse, Vat Dye Pictures Comparison

The present invention relates to a method for dyeing synthetic fibers, and more particularly, to a method for dyeing high-performance synthetic fibers using bat dyes that can be applied to high value-added products such as automobile seat covers, bedding and construction fabrics.

The domestic textile industry has contributed significantly to the national economy as a representative export-driven industry and job creation industry, and it is an industry that takes up a large portion of the domestic manufacturing industry.

In the future textile industry of the 21st century, the market size using existing materials will gradually decrease, and new textile materials will lead demand in response to the improvement of living standards and changes in human needs. The demand for industrial fibers such as sheets is expected to increase.

According to the production status of domestic synthetic fiber materials, 80% of the production amount is PET (Polyethylene terephthalate) fiber, 10% is nylon (Nylon), and other fibers 10% of the production of PET, and this phenomenon is not only domestic Not so with Southeast Asia and China.

PET fiber has high strength, low hygroscopicity, thermoplasticity and chemical resistance, especially heat resistance and unique elasticity against stretch bending, making it the first synthetic fiber for garments, as well as excellent daylight for clothing. It is used in various applications such as acupuncture, automobile, and construction centering on low melting point yarn (LM fiber) requiring fastness, and is expected to be applied to more fields.

In general, the dyeing of PET fibers is performed by disperse dyes at high temperature and high pressure. When dyeing PETs with disperse dyes, the PET fibers are first dissolved in dye molecules from dye fine particles suspended in water, and then dyes. Molecules are adsorbed on the fiber surface, and finally dyeing occurs through a three-step process that enters and diffuses into the voids inside the fiber.

However, the use of disperse dyes has a disadvantage in that the daylight fastness is not good, and high value-added products such as automobile seat covers require excellent daylight fastness, so it is urgently needed to develop a dyeing process to enhance the lightfastness.

In addition, since the dyes that require high daylight fastness are expensive and can be dyed only at high temperature and high pressure, the production cost is high due to the increased energy consumption. Therefore, in order to reduce production costs and produce high value-added products, it is urgently needed to replace dyes with lower cost or to develop dyeing processes suitable for them.

VAT dyes are insoluble in water and have low affinity for fibers, but since the water-soluble leuco compounds obtained by reduction in alkaline reduction baths have affinity for fibers, they are fibers in the form of leuco compounds when dyed. After adsorbing on, it is a dye which returns to the original insoluble dye on a fiber by oxidation, and has an advantage of obtaining excellent daylight and washing fastness.

However, it is mainly used only for dyeing cotton fibers such as blue jean, and dyeing synthetic fibers such as PET is possible because of the disadvantage of poor reproducibility when dyeing with bat dye. I'm not doing it.

Currently, there is no method for dyeing polyester fiber using bat dye in any country in the world as well as in Korea.

If synthetic fibers such as PET and Polytrimethylene Terephthalate (PTT) are dyed using relatively low cost bat dyes instead of high daylight dispersion dyes, production costs can be reduced, as well as excellent friction, washing and light fastness. It is expected that it can be applied to high value-added industries such as automobile seats and construction fibers as it can produce textile products.

Accordingly, an object of the present invention is to dye polyester-based fibers such as PET, using bat dyes that have not been attempted before, and to improve reproducibility, which is a weak point of bat dyes, and to improve the fastness of daylight, washing, and friction. It is to provide a new method of dyeing.

Another object of the present invention is to reduce the production cost of the company and to provide a dyeing method that can be applied to high value-added products such as automobile seat cover.

In order to achieve the above object, the present invention, in dyeing polyester fiber, in consideration of high temperature stability of the dye (battery dyeing method in strong alkali state SP) of the particle size of 0.01 to 0.25 ㎛ of dyes Use a closed jet dyeing machine to prevent color change by oxidizing the bat dye in water or air, and set the dyeing liquid ratio to 1: 5 to 20 to ensure reproducibility, and as a reducing agent to prevent over-reduction. Na ₂ S ₂ O ₄ and Na ₂ CO ₃ are used at 5 to 20 g / l, respectively, the reducing agent input temperature is 80 to 100 ° C. to increase the reducing effect, and Na ₂ S ₂ O to prevent over-reduction. ₄ was added first, followed by Na ₂ CO ₃ , and dispersing and leveling agents were used at 0.1 to 1 g / l to suit the bat dye, and the dyeing temperature was 125 to 130 to ensure color reproducibility. It provides a dyeing method of polyester-based fibers, characterized in that it is set to ℃, H ₂ O ₂ as 0.1 to 1 g / L as the oxidizing agent, the oxidation process is carried out at 125 to 130 ℃.
Hereinafter, an Example is given and this invention is demonstrated in detail.

EXAMPLE

1. Selection of suitable bat dyes for polyester fiber

In order to select a suitable bat dye of the polyester-based fiber, the particle size analysis was performed for each dye, and the results are shown in FIGS. 1 to 9. Table 1 shows the general type characteristics of the bat dye, Table 2 shows the characteristics of each bat dye. Since the bat dye should have high temperature stability, the dye for SP is preferable, the molecular size should be the same as the disperse dye, and the size distribution should be constant.

Kinds Optimal dyeing temperature (℃) Electrolyte required Fiber affinity IW 45 O middle IN 60 X height IN SP 60 to 80 X height SP 80 X Mainly black shade

Dye name CI NO Average particle size (㎛) characteristic CIBANON OLIVE S MD - 0.218 It is good for color dyeing of OLIVE, BROWN, typical khaki. Fast adsorption rate and good for military dyeing CIBANON BROWN BR MD BR 01 0.340 Good leveling properties save caustic soda CIBANON BLACK B-01 MD - 0.296 The color itself does not appear black (for GRAY), a combination is required for black color CIBA RED 2B MD RE 10 0.345 Dye at high temperatures, good dye for best combinations, gradually changing color CIBANON GREEN BF MD - 0.176 Excellent leveling CIBANON BLACK R-01 MD - - Black base color (X for GRAY) INDANTHREN BLUE C-RS PLUS BLUE 004 0.135 - INDANTHREN BROWN C-BR PLUS BROWN 001 0.332 - INDANTHREN NAVY BLUE C-BL PLUS - 0.355 - INDANTHREN DIRECT BLACK 5589 PLUS - 0.372 -

2. Reduction condition test

end. Reductant Input Temperature Change

-Purpose of experiment: In order to find the proper reducing condition, the reducing aid was put into the same data, but the experiment was performed by changing the preparation input temperature (70, 80, 90 ℃).

Dye name: INDANTHREN BROWN C-BR PLUS 1% (OWF), INDANTHREN DIRECT BLACK 5578 1% (OWF)

-Sample name: P / P 160D sea island (Slope: 75/36 DTY, Weft: 130D sea island, 30D high stretch yarn)

Reducing agent: Na ₂ S ₂ O ₄ (Hydrosufite) 10 g / l, Na ₂ CO ₃ (soda ash) 10 g / l, stir once after hydro-injection, and then add soda ash (hydro injection of alkali to prevent over-reduction) Afterwards).

Dyeing temperature: 120 ℃ × 30 "

-Experimental equipment: Daelim Starlet IR (up and down rotation type)

-Experiment bath ratio: 1: 10 (100 ml)

Dyeing process: see FIG.

Oxidation conditions: H ₂ 0 ₂ (hydrogen peroxide) 35% 0.3 ml / l

-Oxidation method: After cooling at 70 ° C, washed in running cold water, and then put hydrogen peroxide in the pot again, filled with 100 ml of cold water, and then heated up at 90 ° C, giving 10 minutes leveling and cooling directly to 60 ° C.

Processing method: After oxidation treatment, washing in running cold water, drying for about 1 minute in a dry warmer, and then dried four times for 1 minute at 180 ℃ in a mini tenter, color check.

-Experimental results: BROWN dye was not affected by reduction temperature or oxidation treatment, and RED dye had many color changes after reduction temperature or oxidation treatment.

First, the reduction temperature was raised to close to the original color when the 90 ℃ was added, and when the reduction was found that the RED meal in the Tenter more and more alive.

In addition, if the water is directly added to the sample after the addition of hydro when reducing, soda ash is generated due to over-reduced stains, care should be taken when the reducing agent is added.

I. Reducing agent input concentration change

-Purpose of experiment: To find the proper dyeing condition, the input amount of reducing agent was changed, and the oxidizing agent was given the same and the experiment was carried out with different oxidation temperature.

Dye name: CIBANON RED 2B MD 5% (OWF)

-Sample name: P / P 160D sea island (Slope: 75/36 DTY, Weft: 130D sea island, 30D high stretch yarn)

Dispersant, leveling agent: 0.3 g / l

Reducing agent: Na ₂ S ₂ O ₄ (Hydrosufite) 10, 15, 20 g / l, Na ₂ CO ₃ (soda ash) 10, 15, 20 g / l, added as a solution at 90 ° C to increase the reducing effect, hydro After injection, add soda ash (prevent overreduction).

Dyeing temperature: 110 & 120 ℃ × 40 "

-Experimental equipment: Daelim Starlet IR (up and down rotation type)

-Experiment bath ratio: 1: 10 (100 ml)

Oxidation conditions: H ₂ 0 ₂ (hydrogen peroxide) 35% 0.7 ml / l

Oxidation method: After cooling at 70 ° C., wash in running cold water, add hydrogen peroxide to the pot, fill 100 ml of cold water, warm up again to 130 ° C., give 10 minutes leveling and cool directly to 70 ° C. (Fig. 11).

Processing method: After oxidation treatment, washing in running cold water, drying for about 1 minute in a dry warmer, and then drying for 2 minutes at 180 ℃ in a mini tenter, color check.

-Experimental results: BROWN dye was not affected by reduction temperature or oxidation treatment, and RED dye showed a lot of color change after reduction temperature or oxidation treatment.

When the reduction temperature was 90 ℃, the color rose closer to the original color, and when it was reduced, the RED kittens were more alive in Tenter.

In addition, if the water is directly added to the sample after the addition of hydro when reducing, soda ash is generated due to over-reduced stains, so care should be taken when the reducing agent is added.

3-1. Oxidation Condition Experiment Ⅰ

-Experimental method: experiment by changing the oxidizer and oxidation temperature to find the proper oxidation condition

Dye name: CIBANON RED 2B MD 1% (OWF)

-Sample name: P / P 160D sea island (light: 75/36 DTY, above: 130D 48F sea island, 30D 24F high shrinkage)

-Reducing agent: Na ₂ S ₂ O ₄ (Hydrosufite) 10 g / l, Na ₂ CO ₃ (soda ash): 10 g / l, added as a solution at 90 ℃ to increase the reducing effect, after hydro injection, soda ash

-Dyeing temperature: 120 ℃ X 30 "

-Experimental equipment: Goryeo IR machine (up and down rotation type)

-Experiment bath ratio: 1: 10 (Total solution ratio 100ml)

Oxidation Condition: H202 (Hydrogen Peroxide) 35% 0.3ml / l, 0.6ml / l, 0.9ml / l

-Oxidation Method: After cooling at 70 ℃, wash in running cold water, put hydrogen peroxide in the pot again, fill with 100ml of cold water, raise the temperature to 90 ℃, 110 ℃, 120 ℃ again, give 10 minutes leveling Cool directly to ℃.

-Processing method: After oxidation treatment, wash in running cold water, dry for about 1 minute in a dry warmer, and then dry 4 times for 1 minute at 180 ℃ in a mini tenter, and then check the color.

-Experimental results: 0.3ml and 0.6ml of fruit are similar in the tenter processing at 120 ℃ but 0.9ml is redish,

It is redish to use 9ml rather than 3ml and 6ml when drying at 120 ℃. If you use more oxidant based on the same temperature, it becomes redish. The higher the temperature based on the same oxidant, the more redish and recombustible.

3-2. Oxidation Condition Test II

-Experimental Method: Experiment with different oxidation aid and oxidation temperature to find proper oxidation condition

Dye Name: CIBANON RED 2B MD: 1% (OWF)

Sample name: P / P 160D sea island (light: 75/36 DTY, upper: 130D 48F)

Reducing agent: Na2S2O4 (Hydrosufite): 10 g / l, Na2CO3 (soda ash): 10 g / l, added as a solution at 90 ℃ to increase the reducing effect

-Dyeing temperature: 120 ℃ X 30 "

-Experimental equipment: Goryeo IR machine (up and down rotation type)

-Experiment bath ratio: 1: 10 (Total solution ratio 100ml)

Oxidation Condition: H202 (Hydrogen Peroxide) 35% 0.6ml / l, 0.7ml / l, 0.8ml / l

-Oxidation method: After cooling at 70 ℃, wash in running cold water, put hydrogen peroxide in the pot again and fill with 100ml of cold water, then warm up to 120 ℃, 125 ℃, 130 ℃, give 10 minutes leveling and 70 ℃ Cool directly to.

-Experimental Results: 120 ℃ Oxidation: After processing, color status is generally similar. Yellowish when 8 ml / l of hydrogen peroxide is used,

125 ℃ Oxidation: Similar to color after processing (Fruit 6.7.8ml / l), almost similar to dry state.

130 ℃ Oxidation: Similar to color after processing (Fruit 6.7.8ml / l), almost similar to dry state.

4. Optimal dyeing condition test

○ Dye Name: CIBANON RED 2B MD: 5% (OWF)

○ Sample name: P / P 160D seaweed yarn (light: 75/36 DTY, above: 130D 48F seaweed yarn) Dispersant, leveling agent: 0.3g / l

○ Reducing agent: Na2S2O4 (Hydrosufite): 10, 15, 20g / l, Na2CO3 (soda ash): 10, 15, 20g / l

○ Dyeing temperature: 120 (125) ℃ X 40 "

○ Laboratory equipment: Goryeo IR machine (up and down rotation type)

○ Experiment bath ratio: 1: 10 (Total solution ratio 100ml)

○ Experimental method: To find the proper dyeing condition, the reducing and oxidizing agents should be identified and the dye data and the oxidation temperature should be changed.

○ Oxidation conditions: H202 (Hydrogen peroxide) 35%, 0.7ml / l

○ Oxidation method: After cooling at 70 ℃, wash in running cold water, put hydrogen peroxide in the pot again, fill with 100ml of cold water, raise the temperature to 130 ℃ again, give 10 minutes leveling and cool directly to 70 ℃.

○ Processing method: After oxidation treatment, wash in running cold water, and then dry for about 1 minute in dry warmer, and then dry for 2 minutes at 180 ℃ in mini tenter, check color.

○ Experimental results

-Establish proper amount of reducing agent

-Establishment of Na2CO3 (soda ash) usage according to reducing agent usage

-Establishment of dyeing temperature

-Oxidizer usage and process temperature

5. Experimental Optimal Dyeing Condition for Direct Black DB Dye

○ Dye Name: Direct Black DB: 1% (OWF)

○ Sample Name: P / P 160D Sea Island Yarn (Light: 75/36 DTY, Above: 130D 48F Sea Island Yarn), Dispersant, Leveling Agent: 0.3g / l

○ Reducing agent: Na2S2O4 (Hydrosufite): 10 g / l, Na2CO3 (soda ash): 10 g / l

○ Dyeing temperature: 120 ℃ X 40 "

○ Laboratory equipment: Goryeo IR machine (up and down rotation type)

○ Experiment bath ratio: 1: 10 (Total solution ratio 100ml)

○ Experimental method: To find the proper dyeing condition, the reducing and oxidizing agents should be identified and tested by different dye data and oxidation temperature.

○ Oxidation conditions: H202 (Hydrogen peroxide) 35% 0.7ml / l

○ Oxidation method: After cooling at 70 ℃, wash in running cold water, put hydrogen peroxide in the pot again, fill with 100ml of cold water, raise the temperature to 130 ℃ again, give 10 minutes leveling and cool immediately to 70 ℃.

○ Experimental results

-Experimental results came out like other dyes

-The following dyes were used for 0.01%, 0.05%, 0.1%, 0.2%, 0.5%, 1.0%, 2.0% and 5.0% optimal dyeing experiments.
YELLOW GCN PINK R BLUE BC BROWN BR OLIVE T VIOLET 2R ORANGE 2RT GREEN FBB OLIVE MW

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12 to 21 is a comparison of the dyeing the dyeing using the dyes and the dye dye for each color, it can be confirmed that the quality of the bat dye dyes are equal or better than the spray dye dyes.

6. Dyeing color fastness test
1) L / Pink Disperse, Vat Dye Fastness Result
Acetate Cotton Nylon PET Acrylic Wool Fading Water fastness Disperse 5 5 4-5 4-5 5 54-5 Vat 5 5 5 5 5 54-5 Color fastness Disperse 5 5 5 5 5 54-5 Vat 5 5 5 5 5 54-5 Wet Friction Fastness Daylight fastness 20 hours Disperse Vat 40 hours Disperse Vat Sublimation fastness Disperse Vat

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2) L / Red Disperse, Vat dye fastness results
Acetate Cotton Nylon PET Acrylic Wool Fading Water fastness Disperse 5 5 5 5 5 54-5 Vat 5 5 4-5 5 5 4-54-5 Color fastness Disperse 5 5 5 5 5 54-5 Vat 4-5 4-5 4 4-5 5 54-5 Wet Friction Fastness Daylight fastness 20 hours Disperse Vat 40 hours Disperse Vat Sublimation fastness Disperse Vat

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3) Brown Disperse, Vat Dye Fastness Result
Acetate Cotton Nylon PET Acrylic Wool Fading Water fastness Disperse 5 5 4-5 5 5 54-5 Vat 5 5 4-5 5 5 54-5 Color fastness Disperse 5 5 4-5 5 5 54-5 Vat 5 5 4-5 5 5 54-5 Wet Friction Fastness Daylight fastness 20 hours Disperse Vat 40 hours Disperse Vat Sublimation fastness Disperse Vat

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4) Violet Disperse, Vat Dye Fastness Result
Acetate Cotton Nylon PET Acrylic Wool Fading Water fastness Disperse 5 5 5 5 5 54-5 Vat 5 5 5 5 5 54-5 Color fastness Disperse 5 5 5 5 5 54-5 Vat 4 4-5 2 4 4-5 44-5 Wet Friction Fastness Daylight fastness 20 hours Disperse Vat 40 hours Disperse Vat Sublimation fastness Disperse Vat

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5) Yellow Disperse, Vat Dye Fastness Result
Acetate Cotton Nylon PET Acrylic Wool Fading Water fastness Disperse 5 5 4-5 5 5 4-54-5 Vat 5 5 5 5 5 54-5 Color fastness Disperse 5 5 4-5 5 5 4-54-5 Vat 5 5 5 5 5 54-5 Wet Friction Fastness Daylight fastness 20 hours Disperse Vat 40 hours Disperse Vat Sublimation fastness Disperse Vat

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Table 9 summarizes the optimal dyeing process of PET dyeing using bat dye based on the above test results.
Factor optimal Characteristic Dye Type Dye for SP - -Must have high temperature stability Molecular size Within 0.25㎛ - -The molecular size must be the same as the disperse dye and the size distribution must be constant Dyeing Machine JET Dyeing Machine Hermetic -Closed type is recommended because VAT dye is oxidized in water or air to change color. Dyeing liquid 1:10 -Reproducibility between the laboratory and the field reducing agent Na2S2O4 10 g / l -Since dyeing temperature rises to high temperature, less amount of reducing agent is used to prevent over reduction. Na2CO3 10 g / l -In general, NaOH is used, but the amount of reducing agent used is small to prevent over reduction because the temperature rises to high temperature during dyeing. Reductant input temperature - 90 ℃ -To increase the reduction effect (prevent reduction), add Na2S2O4 first and then Na2CO3 Dispersant - 0.3g / l -Selection of dispersant suitable for VAT dyes (co-development with formulation company) Leveling agent - 0.3g / l -Selecting suitable leveling agent for VAT dye (co-development with preparation company) Dyeing temperature 125 ~ 130 ℃ × 40min -Color reproducibility is good above 120 ℃ Oxidant H2O2 0.7g / l -No change in color even when the amount of oxidant is increased Oxidation process 125 ~ 130 ℃ × 20min -No change in color even after giving more oxidation time

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As Korea is currently the world's third-largest automobile exporter in the world, there is an urgent need for technological development, and high-end automobile seat covers are being imported. It is possible to prepare an opportunity to export cover fabrics and to upgrade the automobile industry, which is a heterogeneous industry.

In addition, it is possible to obtain a technical superiority by securing the dyeing processing technology for the knitted product of the present invention in the knitted product market-oriented technology development part of the textile market.

Looking at the technical aspects of the ripple effect according to the present invention, the current PET material-related technology is the PET polymer polymerization technology, PET yarn manufacturing technology established state, the development of basic commercialization technology such as pretreatment, dyeing processing technology, etc. have.

In order for PTT fiber to take root in Korea, it is important to develop application technology as a final product through proper use development.

To this end, it is time to develop technology that can satisfy various needs of consumers in the dyeing industry, which is the flower of the textile industry.

As a result of the present invention, it is possible to establish a dyeing process technology and a commercialization technology that can occupy the market and technical advantages of the final product in the state equivalent to developed countries in textile products requiring high daylight, washing and friction fastness.

In order to be used as a material for automobile seat cover, bedding and construction, not only the inherent properties of yarn, but also the selection and application technology of dyeing and processing raw materials are very much needed.

Therefore, as a result of the present invention it is possible to secure the development of technology necessary for the expansion and development of automobile seat cover, bedding and building textile materials for industrial roads.

Looking at the economic and industrial aspects of the present invention,

As Korea is currently the world's third-largest automobile exporter in the world, there is an urgent need for technological development.

In addition, it is possible to prepare an opportunity to export fabrics for high-end automotive seat covers.

In particular, when new product development of new fiber material becomes active in the future,

Most of the technology support / distribution system for Downstream companies, which are small and medium-sized companies, will be established, and technology sharing will be possible by securing domestic network system of technical research & development for high value-added products of polyester fiber materials.

Even in the development of application of technology centered on the knitted fabric market of the textile market, it is believed that the technical superiority is assured by securing the dyeing processing technology for the knitted product of the present invention.

As a method of utilizing the present invention, it is possible to develop a variety of final products by using a polyester fiber material of improved fastness,

Companies dyeing automotive seat covers, bedding and construction fabrics for non-clothing purposes

By applying the present invention can be provided with the effect of producing a competitive product.

Claims (11)

Dyeing polyester fiber using bat dye, Dyeing method of high-performance synthetic fibers using a bat dye, characterized in that the bat dye for SP (method of dyeing in a strong alkali state by a special method) of the particle size of 0.01 to 0.25 ㎛. delete The method of dyeing high-performance synthetic fibers using bat dyes according to claim 1, characterized in that a closed jet dyeing machine is used. The method for dyeing a highly functional synthetic fiber using a bat dye according to claim 1, wherein the dyeing liquid ratio is set at 1: 5 to 20. According to claim 1, Na ₂ S ₂ O ₄ and Na ₂ CO ₃ as a reducing agent, characterized in that the dyeing method of high-performance synthetic fibers using a bat dye, characterized in that each 5 to 20 g / l. The method of dyeing a highly functional synthetic fiber using a bat dye, characterized in that the reducing agent input temperature is 80 to 100 ℃. The method of dyeing a highly functional synthetic fiber using a bat dye according to claim 5, wherein Na ₂ S ₂ O ₄ is added first, followed by Na ₂ CO ₃ . The method of dyeing high-performance synthetic fibers using bat dyes according to claim 1, wherein dispersing and leveling agents are used at 0.1 to 1 g / l, respectively. The method of dyeing high-performance synthetic fibers using a bat dye, characterized in that the dyeing temperature is 125 to 130 ℃. The method of dyeing a highly functional synthetic fiber using a bat dye, according to claim 1, wherein H ₂ O ₂ is used at 0.1 to 1 g / l as an oxidizing agent. The method of dyeing a highly functional synthetic fiber using a bat dye, characterized in that the oxidation process is carried out at 125 to 130 ℃.

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