Salt-free dyeing method for active dye

A salt-free dyeing and reactive dye technology, applied in the direction of dyeing, textile and papermaking, fiber processing, etc., can solve the problems of affecting the fixation and color fastness of reactive dyes, affecting the effect of salt-free dyeing, and impermeability of dyes. The effect of reducing the residual amount, shortening the reaction time, and improving the color yield

Active Publication Date: 2013-07-24
DALIAN UNIV OF TECH
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the cationization of cotton fibers can promote the adsorption of dyes, it is also found that during the process of chemical modification of cotton fibers to introduce cationic groups, a large number of active hydroxyl groups on cotton fibers, especially primary alcohol hydroxyl groups with high reactivity, react with cationic reagents. The color fixing process of reactive dye

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Salt-free dyeing method for active dye
  • Salt-free dyeing method for active dye
  • Salt-free dyeing method for active dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Cotton fiber modification process:

[0055] ① Put the cotton fiber in 20% caustic soda solution, bath ratio 1:30, and treat it at room temperature for 30 minutes; (see the infrared spectrum of alkalized cotton fiber figure 1 );

[0056] ②Using the soaking process, the alkalized cotton fiber is soaked in 8% hydroxyl-containing active intermediate 1 # Aqueous solution, bath ratio 1:10, stirred and reacted at 70°C for 30 minutes, then taken out, rinsed in water after taking out;

[0057] 3. Step 2. Gained modified cotton fiber adopts 6% quaternary ammonium salt 8 containing carboxylic acid groups # , 5% dicyandiamide and 2% zinc nitrate mixed aqueous solution for modification treatment, the treatment bath ratio is 1:10, first, adopt the padding process, pad the modified cotton fiber in the above mixed solution twice, roll with liquid The rate is 80%. Then the treated cotton fibers were baked and reacted at 120°C for 3 minutes, rinsed and ready to be dyed. (Infrare...

Embodiment 2

[0066] (1) Cotton fiber modification process:

[0067] Same as Example 1.

[0068] (2) Cotton fiber dyeing process:

[0069] The modified cotton fiber obtained in (1) is padded twice in 2% reactive yellow M-3RE solution, the liquid retention rate is 80%, and the dyed sample is dried; then in 2% sodium carbonate (bath ratio 1:10) Padding once, with a liquid retention rate of 80%, drying the dyed cotton at 70°C, sealing, steaming for 10 minutes, and then washing with water until neutral.

[0070] (3) Soaping process:

[0071] Same as Example 1.

Embodiment 3

[0075] (1) Cotton fiber modification process:

[0076] Same as Example 1.

[0077] (2) Cotton fiber dyeing process:

[0078] The modified cotton fiber was soaked and rolled twice in 2% active yellow M-3RE solution, with a liquid retention rate of 80%, and the dyed sample was dried; then in lye solution of 2% sodium carbonate and 0.3% sodium hydroxide ( Liquor ratio 1:10) padding once, liquid retention rate 80%, seal the dyed cotton, short wet steam for 30s, take it out and wash with water until neutral.

[0079] (3) Soaping process:

[0080] Same as Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a salt-free dyeing method for an active dye, belonging to the field of printing and dyeing of active dyes. The salt-free dyeing method for the active dye comprises a modification treatment step and a dyeing step, wherein the modification treatment step comprises the following sub-steps of: (1) alkalinizing cotton fibers; (2) impregnating the alkalinized cotton fibers obtained by the sub-step (1) in an active intermediate solution for cotton fiber modification; and (3) impregnating the modified alkalinized cotton fibers obtained by the sub-step (2) in a carboxylic acid group-containing cationic reagent solution for cotton fiber cationic modification. By the alkalinization of the cotton fibers and the introduction of a plurality of carboxyl groups and amino groups, the reactivity of the cotton fibers is improved, and further cationization and reaction with the active dye are facilitated.

Description

technical field [0001] The invention relates to a salt-free dyeing method of reactive dyes, belonging to the field of reactive dye printing and dyeing. Background technique [0002] Reactive dyes have the characteristics of bright colors, complete chromatograms, simple dyeing process, and excellent color fastness. They are widely used in the dyeing of cotton, linen and their blended fibers. When dyeing with reactive dyes, a large amount of inorganic salts (such as sodium chloride and sodium sulfate) need to be added. The amount of salt is 30-100g / L. It is difficult and costly to treat dyeing wastewater with high salt content. If it is directly discharged, it will change the water quality of rivers and lakes. , leading to salinization of the soil around the lake, seriously affecting the growth of crops. In addition, reactive dyeing has the problem of low color fixation rate, and the dye utilization rate is usually only 50% to 70%, resulting in the waste of a large amount of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D06M13/144D06M13/385D06M13/368D06M13/463D06M13/33D06P1/38D06P3/66D06M101/06
Inventor 马威张淑芬
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap