Active, dyestuff modified bath dyeing technology

A reactive dye technology, applied in the field of reactive dye denaturation bath dyeing, can solve the problems of loss of dyeing ability of fibers containing -OH groups, low dye utilization rate, large amount of sewage, etc., to improve dyestuff utilization rate and reduce dyeing cost Effect

Inactive Publication Date: 2006-01-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, reactive dyes will be hydrolyzed in alkaline solution, and the hydrolyzed reactive dyes will lose their ability to dye fibers containing -OH groups. This phenomenon is called "deactivation".
The deactivated reactive dyes can only be discharged as dyeing wastewater under the traditional process conditions, which not only has a low dye utilization rate, but also has a large amount of sewage

Method used

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  • Active, dyestuff modified bath dyeing technology
  • Active, dyestuff modified bath dyeing technology
  • Active, dyestuff modified bath dyeing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: Soybean protein / PVA blended fiber tops Cibacron FN reactive dye denaturation bath dyeing and dyeing: Cibacron FN dyestuff consumption 3.0% (owf); Accelerator Yuanming powder 50g / L or salt 15g / L salt; Dyeing temperature 50~60℃; dyeing time is 15min.

[0036] Color fixing: the amount of color fixing agent sodium carbonate is 5g / L; the color fixing time is 40min. Keep the original dyeing bath temperature constant.

[0037] Denaturation: Add 18% hydrochloric acid solution to the dye bath to reduce the pH value of the dye bath to 4.3.

[0038] Continued dyeing: raise the dyeing temperature to 90°C and continue dyeing for 50 minutes.

[0039] Washing:

[0040] see attached figure 2 :

[0041] Dyeing effect:

[0042] Basic dyeing percentage: 65.7%

[0043] Total uptake percentage: 70.4%

[0044] Fixation percentage: 55.6%

[0045] Fixation efficiency: 78.9%

Embodiment 2

[0046] Embodiment 2: Soybean protein / PVA blend fiber plain weave woven fabric Cibacron LS reactive dye denaturation bath dyeing and dyeing: Cibacron LS dyestuff consumption 3.0% (owf); Accelerator Yuanming powder 30g / L; Dyeing temperature 70~75 ℃ ; Dyeing time is 25min.

[0047] Color fixing: the amount of color fixing agent sodium carbonate is 7g / L; the color fixing time is 50min. The temperature is 80-85°C.

[0048] Denaturation: Add 18% hydrochloric acid solution to the dye bath to reduce the pH value of the dye bath to 4.3.

[0049] Continued dyeing: raise the dyeing temperature to 90-95°C, and continue dyeing for 60 minutes.

[0050] Washing:

[0051] see attached image 3 :

[0052] Dyeing effect:

[0053] Basic dyeing percentage: 70.1%

[0054] Total uptake percentage: 88.3%

[0055] Fixation percentage: 73.0%

[0056] Fixation efficiency: 82.8%

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Abstract

The present invention relates to a modification bath dyeing technique by using active dyes. Said technique can dye fibre, yarn and fabrics, and includes the following processes: under the alkaline condition utilizing active dyes to dye, fix colour and regulate pH value, and under the acidic condition utilizing acidic dyes to dye, heat-up continuously dye and water-wash, etc. The adoption of said method is applicable to new fibre variety, for example, soybean protein/PVA polyblend fibre can be one-bath dyed by using said method.

Description

Technical field: [0001] The invention relates to a fiber material dyeing technology, in particular to a reactive dye denaturation bath dyeing technology. technical background: [0002] Textile dyeing can be divided into one-bath dyeing and two-bath dyeing according to the nature of the dyeing bath. Generally speaking, the dyeing of pure textiles with a single component can be completed by using only one dye in one bath; for blended products, if the dyeing performance of each component is significantly different, it is necessary to use different types of dyes in different Two-bath dyeing is carried out under dyeing conditions. If the dyeing performance of each component is similar, it is possible to carry out one-bath dyeing under certain specific conditions. However, whether it is one-bath dyeing or two-bath dyeing, the common feature is that each dye bath keeps dyeing the dyed object during the dyeing process and the nature of the dye bath itself does not change fundamenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38
Inventor 姜岩王业宏欧力隋淑英王善元
Owner DONGHUA UNIV
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