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Soaping method for fibers dyed by reactive dye

A reactive dye and soaping technology, applied in the field of fiber dyeing, can solve the problems of reducing fiber color fastness, increasing process cost, high energy consumption, etc., and achieving the effect of improving color fastness and improving stability

Active Publication Date: 2019-05-24
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the improvement of the soaping process is mostly concentrated on low-temperature soaping (the temperature is usually not higher than 100 ° C). In the fiber dyeing industry, it is generally believed that: (1) high temperature will reduce the color fastness of the fiber; (2) high temperature will reduce the color fastness of the fiber; Will bring high energy consumption, leading to an increase in process costs

Method used

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  • Soaping method for fibers dyed by reactive dye
  • Soaping method for fibers dyed by reactive dye
  • Soaping method for fibers dyed by reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Select the CF40 / 1 pure cotton yarn of the same yarn batch, arrange the following dye formula (Table 1) for conventional pre-treatment and dyeing. After dyeing, it is discharged from the vat and divided into two vats evenly. The post-treatment process and The post-treatment process of Example 1 of the present invention was tested and compared.

[0034] Table 1

[0035] Dye combination

Dye dosage OWF

Reactive Red 1

2.10％

Reactive Yellow 1

1.51％

Reactive Blue 1

3.25％

[0036] The post-processing process is as follows:

[0037] (1) The post-treatment process of comparative example 1: water washing (50℃×5min)→acid washing (50℃×5min)→soaping (98℃×10min+soaping agent)→soaping (98℃×10min+soaping agent )→soaping (98℃×10min+soaping agent)→water washing (80℃×5min)→water washing (80℃×5min)→water washing (80℃×5min)→water washing (60℃×5min);

[0038] (2) The post-treatment process of Example 1 of the present invention: water washing (50°C×5min) → pickling (50°C×5min) → soaping (120...

Embodiment 2

[0048] Select the CF40 / 1 pure cotton yarn of the same yarn batch, arrange the following dye formula (Table 3) for conventional pretreatment and dyeing. After dyeing, it is discharged from the vat and divided into two vats evenly, using the post-treatment process of Comparative Example 2 and The post-treatment process of Example 2 of the present invention was tested and compared.

[0049] table 3

[0050] Dye combination

Dye dosage OWF

Reactive Red 2

1.10％

Reactive Yellow 2

1.51％

Reactive Blue 2

4.25％

[0051] The post-processing process is as follows:

[0052] (1) The post-treatment process of Comparative Example 2: water washing (50℃×5min)→acid washing (50℃×5min)→soaping (98℃×10min+soaping agent)→soaping (98℃×10min+soaping agent) )→soaping (98℃×10min+soaping agent)→water washing (80℃×5min)→water washing (80℃×5min)→water washing (80℃×5min)→water washing (60℃×5min);

[0053] (2) The post-treatment process of Example 2 of the present invention: water washing (50℃×5min) → pickl...

Embodiment 3

[0061] According to the same post-treatment process of Example 1, the effect of reactive dye hydrolysis dye removal under different soaping temperature, different soaping time or different soaping agent conditions and the effect of high soaping temperature on color fastness were studied. The results are as follows Figure 1-3 And shown in Table 5.

[0062] table 5

[0063]

[0064] by figure 1 It can be seen that with the increase of the soaping temperature, the washing removal rate gradually increases, and when the temperature rises above 110°C, the rising range greatly increases, and the washing removal rate between 110°C and 130°C is 34.3% to 43.6%. Compared with 100°C soaping, the floating color removal rate is increased by 10-40%, and the floating color removal rate is significantly improved.

[0065] by figure 2 It can be seen that with the increase of the soaping time, there is little difference in the washing removal rate, and the present invention can be reasonably controll...

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Abstract

The invention relates to a soaping method for fibers dyed by reactive dye. The method comprises the following steps: (1) acquiring the fibers dyed by the reactive dye; (2) adding water and a soaping agent to the fibers, and warming to more than 110 DEG C and soaping. The soaping method is capable of effectively removing surface dyeing in the fibers dyed by the reactive dye, reducing washing frequency in fiber aftertreatment, improving color fastness of the fibers, shortening an aftertreatment flow, reducing water consumption and energy consumption, and reducing aftertreatment cost on the whole.

Description

Technical field [0001] The invention relates to the technical field of fiber dyeing, in particular to a method for soaping fibers dyed with reactive dyes. Background technique [0002] Reactive dyes have simple molecular structure, complete color and luster, complete chromatogram, easy to use, and low cost. In addition, they contain sulfonic acid water-soluble groups, which ionize into dye anions in water, and have high stability to hard water, diffusibility and uniformity. It has good dyeability and is currently a widely used dye type. [0003] However, reactive dyes have the disadvantage of low fixation rate. The hydrolyzed product obtained by the hydrolysis reaction with water generally can no longer react with the fiber, so its dye utilization rate is very low. The residual liquid and the hydrolyzed dye on the fiber can be as high as 30% to 45 %. At the same time, the affinity of hydrolyzed dyes to cellulose fibers affects its ease of washing, so in actual production, it usual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/04D06P5/08D06P1/38D06P3/66
Inventor 许满吴海彬胡广文何韵湘安志轩
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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