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Salt-substitute pretreatment cold-pad-batch active-dye dyeing method for cotton fabric

A technology of reactive dyes and dyeing methods, applied in the field of cotton fabric salt substitute pretreatment cold pad pile reactive dye dyeing field, can solve problems such as water, biological and soil hazards, destroy water ecological environment, change water quality, etc., and achieve acid and alkali resistance. The effect of high perspiration fastness

Inactive Publication Date: 2015-01-14
WUXI XINGLIN DYEING ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From an ecological point of view, printing and dyeing wastewater with high salt content will lead to the destruction of the ecological environment, and the large amount of inorganic salt added in the dyeing process cannot be treated by simple physical, chemical and biochemical methods.
The discharge of waste water with high salt content will directly change the water quality of rivers, lakes, and destroy the ecological environment of the water; at the same time, the high permeability of salt will lead to salinization of the soil around rivers, lakes and printing and dyeing factories, reducing the yield of crops
Therefore, the addition of salt will lead to deterioration of water quality, damage to the ecological environment, and great harm to water, organisms and soil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for dyeing cotton fabric with salt substitute pretreatment cold pad-batch reactive dyes, comprising:

[0033] Pretreatment process → hot water washing (80-90°C) → cold water washing → drying → padding (two dipping and two rolling) → coiling → stacking (room temperature) → cold water washing → soaping → hot water washing (80-90°C ) → wash in cold water → dry;

[0034] Among them, the pretreatment process conditions are: the amount of salt substitute agent is 5g / L, the alkali agent EH is 1g / L, the pretreatment temperature is 85°C, the pretreatment time is 35min, and the bath ratio is 1:50.

[0035] Among them, the cold pad batch dyeing process is:

[0036] The dark color of cold pad batch dyeing is: reactive red 3BS and reactive yellow 3RS40g / L, reactive blue FBN30g / L, caustic soda 1g / L, alkali agent S4g / L, salt 20g / L, liquid carrying rate 75%, stacking time 8h

[0037] Cold pad-batch dyeing light colors are: reactive red 3BS, reactive yellow 3RS and reactive b...

Embodiment 2

[0042] A method for dyeing cotton fabric with salt substitute pretreatment cold pad-batch reactive dyes, comprising:

[0043]Pretreatment process → hot water washing (80-90°C) → cold water washing → drying → padding (two dipping and two rolling) → coiling → stacking (room temperature) → cold water washing → soaping → hot water washing (80-90°C ) → wash in cold water → dry;

[0044] Among them, the pretreatment process conditions are: the amount of salt substitute agent is 4g / L, the alkali agent is 0.8-g / L, the pretreatment temperature is 80°C, the pretreatment time is 30min, and the bath ratio is 1:48.

[0045] Among them, the cold pad batch dyeing process is:

[0046] The dark color of cold pad batch dyeing is: reactive red 3BS and reactive yellow 3RS35g / L, reactive blue FBN25g / L, caustic soda 0.5g / L, alkali agent 3.5g / L, salt 15g / L, liquid carrying rate 70%, stacking Time 7h;

[0047] The light color of cold pad-batch dyeing is: reactive red 3BS, reactive yellow 3RS and r...

Embodiment 3

[0052] A method for dyeing cotton fabric with salt substitute pretreatment cold pad-batch reactive dyes, comprising:

[0053] Pretreatment process → hot water washing (80-90°C) → cold water washing → drying → padding (two dipping and two rolling) → coiling → stacking (room temperature) → cold water washing → soaping → hot water washing (80-90°C ) → wash in cold water → dry;

[0054] Among them, the pretreatment process conditions are: the amount of salt substitute agent is 6g / L, the alkali agent is 1.2g / L, the pretreatment temperature is 90°C, the pretreatment time is 40min, and the bath ratio is 1:52.

[0055] Among them, the cold pad batch dyeing process is:

[0056] The dark color of cold pad batch dyeing is: reactive red 3BS and reactive yellow 3RS45g / L, reactive blue FBN35g / L, caustic soda 1.5g / L, alkali agent 4.5g / L, salt 25g / L, liquid carrying rate 80%, stacking time 9h;

[0057] Cold pad-batch dyeing light colors are: reactive red 3BS, reactive yellow 3RS and reacti...

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Abstract

The invention relates to a salt-substitute pretreatment cold-pad-batch active-dye dyeing method for cotton fabric. The soaping fastness and the acid, alkali and perspiration resistant fastness of dyed fabric obtained by using the technology is relatively high and are both 4-5 grade or more, the solarization fastness is 4-5 grade, the dry friction fastness is 4 grade, the wet friction fastness is 4 grade, the fabric surface is smooth, the usage amount of an inorganic salt in the active dye dyeing process is reduced, the production cost is reduced, energy is saved, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a method for dyeing cotton fabrics with salt substitute pretreatment cold pad-batch reactive dyes. Background technique [0002] Cotton fiber occupies an important position in the textile industry worldwide. The most important and potential dyes currently used in cotton fiber dyeing are reactive dyes, because the color brilliance and wet fastness of cotton dyed by reactive dyes are both better. [0003] When reactive dyes are dyed, they are ionized into dye anions and sodium ions in the dye solution. Cellulose is a polysaccharide compound formed by connecting β-D-glucose residues through 1,4-glycoside bonds. Cellulose molecules can be ionized to form Cell-O anions. - . There is Coulomb repulsion between dye anion and cellulose anion, sodium cation and Cell-O - Combined, reducing the concentration of sodium ions in the dye solution. The difference in sodium ion concentration forms an ...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P1/52D06P1/673D06P1/667D06P3/66
Inventor 俞国兴
Owner WUXI XINGLIN DYEING ENVIRONMENTAL PROTECTION EQUIP
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