Protein fiber reactive dye low-salt dyeing modification method

A protein fiber and reactive dye technology, applied in dyeing, fiber treatment, animal fiber, etc., can solve the problems of chemical residues, chemical reagents, environmental pollution, etc., achieve an increase in dyeing percentage, simple operation to control, and improve dyeing performance Effect

Active Publication Date: 2019-09-13
青岛裕真化学有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing technology, the grafted cationic compounds need to add cross-linking agents, resulting in chemical residues, and the residues and emissions of chemical reagents will also cause environmental pollution and other problems.

Method used

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  • Protein fiber reactive dye low-salt dyeing modification method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Amination of wool: Weigh a certain amount of wool, immerse in a buffer solution of 4g / L chitosan oligosaccharide pH10, the bath ratio is 1:100, react at 90°C for 60 minutes, and use dinitro water to react the reaction solution The combination rate of chitosan and wool was determined to be 30% by citric acid chromogenic method, and the appearance color of wool did not change under this condition. After the wool is taken out, it is washed with water and dried to obtain aminated wool.

[0027] (2) Reactive dye dyeing of aminated wool: Take a certain amount of aminated wool and immerse it in a dye solution containing 3BSN reactive dye at 60°C with a concentration of 0.5% owf to start dyeing. After dyeing for 15 minutes, put 10g / L of chloride Sodium, continue dyeing at 60°C for 15 minutes, start to heat up, add 10g / L anhydrous sodium carbonate when it reaches 90°C, fix the color at 90°C for 30 minutes, and the dyeing is over. Take the wool out of the dyeing solution, wa...

Embodiment 2

[0029] (1) Amination of wool: Weigh a certain amount of wool, immerse in a buffer solution containing 2g / L chitosan oligosaccharide pH9, the bath ratio is 1:100, react at 80°C for 45 minutes, and use dinitro Salicylic acid chromogenic method determined that the binding rate of chitosan oligosaccharide and wool was 17%, and the appearance color of wool did not change under this condition. After the wool was taken out, it was washed with water and dried to obtain aminated wool.

[0030] (2) Reactive dye dyeing of aminated wool: Take a certain amount of aminated wool and immerse it in the dye solution containing Huasuhong 3BSN reactive dye at 60°C with a concentration of 0.3% owf to start dyeing. After dyeing for 15 minutes, put 10g / L chloride Sodium, continue dyeing at 60°C for 15 minutes, start to heat up, add 10g / L anhydrous sodium carbonate when it reaches 90°C, fix the color at 90°C for 30 minutes, and the dyeing is over. Take the wool out of the dyeing solution, wash off th...

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Abstract

The invention discloses a protein fiber reactive dye low-salt dyeing modification method and belongs to the technical field of modification of textile materials. The protein fiber reactive dye low-salt dyeing modification method comprises the following steps: immersing protein fiber into a buffer solution containing chitosan oligosaccharide, reacting at 80 to 90 DEG C for 45 to 60 minutes, takingout the protein fiber, washing the protein fiber with water, drying to obtain aminated protein fiber, and performing reactive dye low-salt dyeing on the aminated protein fiber. The invention providesa method for improving the dyeing property of the protein fiber on the reactive dye under the condition of low-salt concentration by performing cationic modification on the protein fiber by the chitosan oligosaccharide; compared with the unmodified wool, the dyeing percentage of the modified wool on the reactive dye and the K / S value are increased by 32 percent and 135 percent correspondingly. Compared with the traditional method, the method has the advantages that the chitosan oligosaccharide serves as a modifier and the modification condition is mild, non-toxic and easy to control; furthermore, the problems of chemical residues and environmental pollution caused by use of chemical reagents are avoided; and high practicability is achieved.

Description

technical field [0001] The invention relates to a method for low-salt dyeing modification of protein fiber reactive dyes, belonging to the technical field of textile material modification. Background technique [0002] Wool, silk and their fabrics are usually dyed with acid dyes. Although the color is bright, the color fastness is poor, which affects its wearing performance. Theoretically, reactive dyes can chemically react with amino groups and hydroxyl groups on protein fibers to dye them, so they have good soaping fastness. When dyeing with reactive dyes, it is necessary to add a large amount of electrolytes to promote dyeing, which increases the pollution of dyeing wastewater. [0003] At present, low-salt dyeing of reactive dyes is usually achieved by changing the structure of the dye, modifying the fiber, optimizing the dyeing and finishing process conditions, and adding dyeing auxiliaries. Changes in the structure of dyes will increase the price of dyes, and due to ...

Claims

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Application Information

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IPC IPC(8): D06M15/03D06M13/332D06P1/38D06P3/14D06M101/12D06M101/10
CPCD06M13/332D06M15/03D06M2101/10D06M2101/12D06P1/38D06P3/148
Inventor 崔莉袁久刚王平范雪荣王强张辉
Owner 青岛裕真化学有限公司
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