High-temperature low-alkaline dyeing method for double-monochlorotriazine reactive dyes

A technology of reactive dyes and dyeing methods, which is applied in the field of high temperature one-bath dyeing of reactive dyes and disperse dyes, can solve the problems that reactive dyes are difficult to achieve high color yield, the difficulty of sewage treatment is increased, and fabrics are difficult to wash. The effect of hydrolysis, complete chromatography, and not easy to break bonds

Inactive Publication Date: 2013-03-13
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hydrolyzed dye is difficult to react with cellulose due to the loss of reactivity, and the reactive dye that has been combined with the fiber will greatly increase the degree of hydrolysis of the dye-fiber bond under the high-temperature alkaline condition of 130°C. Therefore, it is not only difficult for reactive dyes to achieve ...

Method used

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  • High-temperature low-alkaline dyeing method for double-monochlorotriazine reactive dyes
  • High-temperature low-alkaline dyeing method for double-monochlorotriazine reactive dyes
  • High-temperature low-alkaline dyeing method for double-monochlorotriazine reactive dyes

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Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: the dyeing application of pure cotton fabric.

[0039] This embodiment takes pure cotton fabric as the application object, mainly because the dyeing application and effect detection of pure cotton fabric can be more convenient, detailed and accurate evaluation of the dyeing effect of the present invention, and this embodiment is applied to other cellulose / Polyester blended fibers and fabrics such as polyester and cotton can also achieve the same effect.

[0040] A high-temperature and low-alkali dyeing method of dichloro-s-triazine reactive dyes, which is applied to the dyeing of pure cotton fabrics, comprises the steps:

[0041] (1) Pretreatment: put the pure cotton fabric into the dyeing bath prepared according to the bath ratio of 1:8~1:30, run at room temperature for 3~5 minutes, add 0.5~1.0g / L refining agent and caustic soda 1~2g / L L (or 3g / L soda ash), finally add 3-5g / L mass fraction of 30% hydrogen peroxide, heat up to 80-95°C and run for 15-45 m...

Embodiment 2

[0078] Put 500 kg of 32S pure cotton knitted fabric into the dyeing bath prepared according to the bath ratio of 1:10, run for 3-5 minutes, add 300 kg of anhydrous sodium sulfate, run for 3-5 minutes, add liquid mixed alkali (sodium bicarbonate and tetraethylammonium hydroxide) 100KG for 3-5 minutes, finally add 4 kg of dichloro-s-triazine golden yellow, 5 kg of di-monochloro-s-triazine dark blue, 0.5 kg of di-monochloro-s-triazine red, and run for 3- After 5 minutes, heat up to 130°C at a heating rate of 1°C / min and run for 30 minutes, then cool down and drain the liquid, and the dyeing is over.

[0079] Post-treatment: First wash with warm water at 50°C, drain the liquid into the water, add 209 5 kg of detergent, heat up to 95°C at 2°C / min and run for 15 minutes, cool down and drain, then wash with cold water again, drain the liquid out of the tank, The finished product is obtained by dehydration and drying.

[0080] The standard of GB / T 3920-1997 GB / T 3921.1-1997 is used t...

Embodiment 3

[0084] Embodiment 3: The same bath dyeing application of reactive dyes and disperse dyes of polyester-cotton blended fabrics.

[0085]Put 500 kg of 35 / 65 polyester-cotton blended knitted fabric into the dyeing bath prepared according to the bath ratio of 1:10. At this time, the temperature of the dyeing bath is about 40°C, and run for 3-5 minutes; add 200 kg of anhydrous sodium sulfate, Run for 3-5 minutes; add 100 kg of liquid mixed alkali and run for 3-5 minutes, and finally add 1.25 kg of dichloro-s-triazine reactive dye yellow, 0.25 kg of di-monochloro-s-triazine reactive dye red, and di-chloro-s-triazine reactive dye red. Add 0.775 kg of reactive dye blue, add 0.6 kg of disperse yellow, 0.255 kg of disperse red, and 1.61 kg of disperse blue at the same time, run for 3-5 minutes, heat up to 130°C at a heating rate of 1°C / min and run for 30 minutes, cool down to below 70°C and discharge solution, the staining is over.

[0086] Post-treatment: First wash with warm water at ...

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Abstract

The invention discloses a high-temperature low-alkaline dyeing method for double-monochlorotriazine reactive dyes. The method is characterized by comprising the following steps: putting a material to be dyed into a dye bath according to the bath ratio of 1:8-1:30, adding 10-80g/L of electrolyte, and running for 3-5min; adding 10-20g/L of mixed alkalis, running for 3-5min, and adjusting the pH value of the initial dye bath to be 9-10; adding double-monochlorotriazine type reactive dye, and running for 3-5min; heating up to 130 DEG C according to the speed of 1-3DEG C/min, and carrying out heat-preservation dyeing for 30-45min; discharging liquid in a cooling way, and stopping dyeing. According to the method provided by the invention, the double-monochlorotriazine reactive dye and the disperse dye can be jointly batched with each other, and the dyeing can be carried out on a terylene/cotton blended fabric by a high temperature-batch method. Therefore, the producing flow path for dyeing the terylene-cotton fabric can be obviously shortened, the production efficiency can be improved, the energy consumption can be greatly reduced, the sewage discharge can be reduced, and the method is suitable for the low-carbon, environment-friendly, high-efficiency and ecological dyeing and finishing direction.

Description

Technical field: [0001] The invention relates to a high-temperature and low-alkali dyeing method of di-chloro-s-triazine reactive dyes, which is applied to the technical field of high-temperature one-bath dyeing of reactive dyes and disperse dyes of polyester-cotton fabrics. Background technique: [0002] Reactive dyes are used for dyeing at high temperature (130°C), and their main purpose is to dye multi-component fibers in the same bath with disperse dyes. Multi-component fiber textiles containing cellulose, polyester, polyamide, spandex, silk, and even wool can be dyed with disperse and reactive dyes, but the existing dyeing process of these multi-component fiber textiles is very complicated, not only exists Many technical problems, there are also many ecological problems. Especially the cellulose / polyester blended fabric with the largest number of multi-component fiber blended fabrics. [0003] In order to ensure the dyeing quality, the so-called two-bath dyeing proces...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P1/16D06P3/872D06P5/02D06P5/00D06M11/38D06M11/50D06M16/00D06M101/06D06M101/32
Inventor 胡玲玲
Owner SHAOXING UNIVERSITY
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