Organic alkali dyeing method

A dyeing method and an organic base technology, applied in the dyeing field, can solve problems such as poor water solubility, more processes, easy agglomeration to block the feeding pipe, etc., and achieve the effect of reducing emissions and reducing processing costs

Inactive Publication Date: 2014-06-18
朱文潮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in actual production, the amount of soda ash is large, the water solubility is poor, and it is easy to agglomerate and block the feeding pipe, which brings inconvenience to the operation.
If the chemical material is not thorough, it will cause unevenness of the alkali, which will cause the yarn to have colored flowers, and often cause white spots due to the large amount of carbonate in the dyeing bath, which will affect t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] The specific implementation steps of the organic alkali dyeing method described in this embodiment are as follows:

[0017] (1) Pretreatment process: Put the wool yarn in the dyeing vat at room temperature, and put in reactive dyes, auxiliaries and so on for 20 minutes;

[0018] (2) Dyeing process: heating the pretreated wool yarn from room temperature to 65°C, keeping the heating rate at 0.7°C / min, and dyeing for 60 minutes;

[0019] (3) Fixing process: Add organic alkali to fix the color so that the concentration of the organic alkali is controlled at 2.0g / L. The organic alkali should be added slowly and evenly, the time should be controlled at about 30min, and the heat preservation time should be 60min;

[0020] (4) Soaping process: After the temperature drops to room temperature, drain the liquid and add soaping agent to wash for 15 minutes;

[0021] (5) Hot water washing process: washing at a water temperature of 90°C for 18 minutes;

[0022] (6) Neutraliza...

Example Embodiment

[0025] Example 2:

[0026] The specific implementation steps of the organic alkali dyeing method described in this embodiment are as follows:

[0027] (1) Pretreatment process: Put the wool yarn in the dyeing vat at room temperature, and put in reactive dyes, additives, etc. soak for 30 minutes;

[0028] (2) Dyeing process: heating the pretreated wool yarn from room temperature to 70°C, keeping the heating rate at 1°C / min, and dyeing for 50 minutes;

[0029] (3) Fixing process: Add organic alkali to fix the color, so that the concentration of the organic alkali is controlled at 2.2g / L. The organic alkali should be added slowly and evenly, the time should be controlled at about 30min, and the heat preservation time should be 70min;

[0030] (4) Soaping process: After the temperature drops to room temperature, drain the liquid and add soaping agent to wash for 12 minutes;

[0031] (5) Hot water washing process: washing at a water temperature of 85°C for 15 minutes;

[0032] (6) Neutralizati...

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PUM

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Abstract

The invention discloses a dyeing method, and particularly relates to an organic alkali dyeing method for a wool yarn. The method comprises the following steps: a pretreatment technology, a dyeing technology, a fixation technology, a soaping technology, a hot washing technology, a neutralizing technology, and a baking technology. According to the dyeing method disclosed by the invention, traditional inorganic bases, such as caustic soda and sodium carbonate, are replaced by organic bases, so that the safety coefficient of an active dye is effectively improved, the dyeing defect is not easily generated, the pH value in the dyeing process is stable, the possibility of chromatic aberration caused by pH value fluctuation of a dye bath is lowered, the wool yarn is good in hand feeling and vivid in color and luster, the dyeing defects of white spots, whiting and the like caused by incomplete cleaning are overcome, the dyeing quality is greatly improved, the chemical oxygen demand (COD) discharge of wastewater is further reduced, and the environmental pollution is small.

Description

technical field [0001] The invention discloses a dyeing method, in particular to an organic alkali dyeing method of wool yarn. Background technique [0002] At present, reactive dyes are mostly used in cellulose dyeing of printing and dyeing products, and cellulose is inactive in general neutral media. Only in alkaline media can it undergo nucleophilic substitution or addition reaction with dyes to start covalent bonding. And solid color. The color-fixing alkali agents commonly used in traditional crafts mainly include caustic soda, trisodium phosphate, sodium silicate, and soda ash. Among them, soda ash is used most in factories. But in actual production, the consumption of soda ash is very large, its water solubility is poor, and it is easy to agglomerate and block the feeding pipe, which brings inconvenience to the operation. If the chemical material is not thorough, it will cause unevenness of the alkali, which will cause the yarn to have colored flowers, and often ca...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P5/06
Inventor 朱文潮
Owner 朱文潮
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