Soaping method for improving post-treatment effect of fiber dyed by reactive dye

A reactive dye and soaping technology, applied in the field of fiber dyeing, can solve the problems of wasting energy, unstable color, low directivity, etc., and achieve the effect of improving the efficiency of floating color washing, ensuring color stability, and reducing overall energy consumption.

Active Publication Date: 2019-05-31
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The directness of different dye matrix structures to fibers is different, and the directness is low, which will affect the dyeing rate and color fixation rate of reactive dyes; the directness is too high, because some reactive dyes will form hydrolyzed dyes when they react, These highly substan

Method used

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  • Soaping method for improving post-treatment effect of fiber dyed by reactive dye
  • Soaping method for improving post-treatment effect of fiber dyed by reactive dye
  • Soaping method for improving post-treatment effect of fiber dyed by reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] Select the CF60 / 1 pure cotton yarn of the same yarn batch, arrange the following dye formula (Table 1) for pre-conventional treatment and dyeing. After dyeing, it is discharged from the vat and divided into two vats evenly, using the post-treatment process of Comparative Example 1 and The post-treatment process of Example 1 of the present invention was tested and compared.

[0039]

[0040] The post-processing process is as follows:

[0041] (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);

[0042] (2) The post-treatment process of Example 1 of the present invention: water washing (50℃×5min) → pickling (50℃×5min) → soaping (105℃×10min+ soaping agent) → soaping (105℃×10min+ soap Lotion)→hot water wash...

Example Embodiment

[0050] Example 2

[0051] 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.

[0052]

[0053] The post-processing process is as follows:

[0054] (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)→washing (80℃×5min)→washing (80℃×5min)→washing (80℃×5min)→washing (80℃×5min)→washing (60℃) ×5min)→water washing (60℃×5min);

[0055] (2) The post-treatment process of Example 2 of the present invention: water washing (50℃×5min) → pickling (50℃×5min) → soaping (125℃×10min+ soaping agent) → soaping (125℃×10min+ soap ...

Example Embodiment

[0063] Example 3

[0064] Select the CF60 / 2 pure cotton yarn of the same yarn batch, arrange the following dye formula (Table 5) for conventional pretreatment and dyeing. After the dyeing is finished, the vat is discharged and divided into two vats evenly, using the post-treatment process of Comparative Example 3 and The post-treatment process of Example 3 of the present invention was tested and compared.

[0065]

[0066]

[0067] The post-processing process is as follows:

[0068] (1) The post-treatment process of Comparative Example 3: water washing (50℃×5min) → pickling (50℃×5min) → soaping (98℃×10min+ soaping agent) → soaping (98℃×10min+ soaping agent) )→soaping (98℃×10min+soaping agent)→washing (80℃×5min)→washing (80℃×5min)→washing (80℃×5min)→washing (80℃×5min)→washing (60℃) ×5min);

[0069] (2) The post-treatment process of Example 3 of the present invention: water washing (50℃×5min) → pickling (50℃×5min) → soaping (115℃×10min+ soaping agent) → soaping (115℃×10min+ soap Loti...

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Abstract

The invention relates to a soaping method for improving the post-treatment effect of fiber dyed by reactive dye. The method includes the following steps that 1, fiber dyed by the reactive dye is obtained; 2, water and a soaping agent are added in the fiber, and heating for soaping, wherein the temperature T1 of soaping is more than 100 DEG C and 110 DEG C when the reactive dye is low direct reactive dye, the temperature T2 of soaping is more than 110 DEG C and 120 DEG C when the reactive dye is middle direct reactive dye, and the temperature T3 of soaping is more than 120 DEG C and 130 DEG C when the reactive dye is high direct reactive dye. The soaping method can effectively remove surface dyeing in the fiber dyed by different kinds of direct reactive dye, the color fastness and color stability of the fiber are improved, meanwhile the number of times of washing in the fiber post-treatment process is reduced, the post-treatment process is shortened, water consumption and energy consumption are reduced, and the post-treatment cost is reduced on the whole.

Description

technical field [0001] The invention relates to the technical field of fiber dyeing, in particular to a soaping method for improving the aftertreatment effect of fibers dyed with reactive dyes. Background technique [0002] Reactive dyes have simple molecular structure, complete color, relatively complete chromatogram, convenient use, and low cost. In addition, they contain sulfonic acid water-soluble groups, which can be ionized into dye anions in water, and have high stability to hard water, diffusibility and uniformity. It has good dyeability and is the most widely used dye type at present. [0003] However, reactive dyes have the disadvantage of low color fixation rate, and the hydrolyzed products obtained by the hydrolysis reaction with water generally cannot react with the fibers, so the dye utilization rate is very low, and the hydrolyzed dyes on the raffinate and fibers can be as high as 30% to 45%. %, at the same time, due to the affinity of hydrolyzed dyes to cell...

Claims

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Application Information

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IPC IPC(8): D06P5/08D06P5/04D06P1/38D06P3/66
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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