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Method for dyeing wool fibres by using acidic mordant dye

A wool fiber and mordant dye technology, which is applied to the dyeing of acid mordant dyes, and the use of acid mordant dyes to dye wool fibers, can solve the problems of high free chromium ion concentration, high heavy metal chromium ion concentration, and harm to human health. Achieve the effect of reducing the content of free chromium ions, reducing damage to the environment, and avoiding damage to health

Inactive Publication Date: 2013-06-26
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for dyeing wool fibers with acid mordant dyes, which solves the problems of high concentration of heavy metal chromium ions in the dyeing waste liquid after dyeing, excessive discharge and high concentration of free chromium ions in dyed products, which are harmful to existing dyeing methods. Human health, problems with limited applications

Method used

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  • Method for dyeing wool fibres by using acidic mordant dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 80 kg light black (gray) color wool dyeing process:

[0031] Put the wool fiber into a cage and put it into the dyeing vat, add 800 kg of water to the dyeing vat, turn on the circulating heating pump of the dyeing vat and raise the temperature to 45°C, add 0.8 kg of dye acid medium black PV to the dyeing vat (add after dissolving in hot water and filtering), add 0.4 kg of sulfuric acid (cold water Add after dilution), add 3.2 kg of sodium sulfate (add after dissolving in cold water), keep warm at 45°C for 15 minutes, heat up at 1°C / min, heat up to 98-100°C for 45 minutes, cool down to 70°C and add 0.8 kg of formic acid ( Add after diluting with water), add 0.28 kg of red alum (add after dissolving in water), keep warm for 10 minutes, raise the temperature to 98-100°C, keep warm for 30 minutes, add 0.4 kg of mordant accelerator (add after diluting with water), keep warm for 15 minutes, Drain and rinse, add water and heat up to 90°C, add 0.8 kg of chromium-removing soapin...

Embodiment 2

[0033] 80 kg deep black wool dyeing process:

[0034] Put the wool fiber into the cage and put it into the dyeing vat, add 800 kg of water to the dyeing vat, turn on the circulating heating pump of the dyeing vat and raise the temperature to 45°C, add 3.2 kg of dye acid medium black PV to the dyeing vat (add after dissolving in hot water and filtering), add 0.8 kg of sulfuric acid (cold water Add after dilution), add 4.0 kg of sodium sulfate (add after dissolving in cold water), keep warm at 45°C for 15 minutes, heat up at 1°C / min, heat up to 98-100°C for 45 minutes, cool down to 70°C and add 0.8 kg of formic acid ( Add after diluting with water), add 0.64 kg of red alum (add after dissolving in water), keep warm for 10 minutes, raise the temperature to 98-100°C, keep warm for 30 minutes, add 1.6 kg of mordant accelerator (add after diluting with water), keep warm for 15 minutes, Drain and rinse, add water and heat up to 90°C, add 1.6 kg of chromium-removing soaping agent, kee...

Embodiment 3

[0036] 80 kg bright blue wool dyeing process:

[0037] Put the wool fiber into the cage and put it into the dyeing vat, add 800 kg of water to the dyeing vat, turn on the circulating heating pump of the dyeing vat and raise the temperature to 45°C, add 1.6 kg of dye acid medium Biaolan B to the dyeing vat (add after dissolving and filtering in hot water), add 0.8 kg of sulfuric acid ( Add after diluting with cold water), add 2.4 kg of sodium sulfate (add after dissolving in cold water), keep warm at 45°C for 15 minutes, heat up at 1°C / min, heat up to 98-100°C for 45 minutes, cool down to 70°C and add 0.6 kg of formic acid (add after diluting with water), add 0.4 kg of red alum (add after dissolving in water), keep warm for 10 minutes, raise the temperature to 98-100°C, keep warm for 30 minutes, add 0.8 kg of mordant accelerator (add after diluting with water), keep warm for 15 minutes , drain and rinse, add water and heat up to 90°C, add 0.8 kg of chromium-removing soaping age...

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Abstract

The invention discloses a method for dyeing wool fibres by using acidic mordant dye, comprising the following steps of: firstly, dyeing wool fibres with dye; secondly, mordanting the dyed wool fibres; and finally, soaping the mordanted wool fibres to finish the dyeing operation. In the method for dyeing wool fibres by using the acidic mordant dye, disclosed by the invention, the traditional dyeing technique is not changed, but an assistant is added on the basis of the traditional technique, no influence is caused to all kinds of dyeing indexes and convenience is provided for use in factories.Deducted from the principle of the new method, the new method can be used for remarkably reducing the content of free chromium ions on the wool fibres and dramatically reducing the content of the total chromium irons in the residual dyeing solution. A new dyeing method is provided for the safe use of the acidic mordant dye and is used for avoiding damage to health and reducing the damage of the chromium ions in the discharge of the waste dyeing water to the environment.

Description

technical field [0001] The invention belongs to the technical field of textile science and relates to a method for dyeing acid mordant dyes, in particular to a method for dyeing wool fibers with acid mordant dyes. Background technique [0002] The dyeing technology of wool fiber has been developed so far that it is very mature and can meet various needs of customers. The types of dyes used in dyeing include traditional acid dyes {strong acid bath dyeing acid dyes (level dyeing acid dyes), neutral bath dyeing acid dyes, weak acid bath dyeing acid dyes (flushing-resistant acid dyes), acid medium dyes and acid mordant dyes}. There are also reactive dyes for wool that have been gradually promoted and applied in the past 30 years. Traditional acid dyes and new reactive dyeing technologies for wool are very mature and have their own characteristics, and are currently used in various factories. Acid mordant dyes are cheap, mature in technology and complete in color spectrum, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/39D06P1/36D06P3/16D06P3/20D06P5/02D06P1/673
Inventor 贺江平
Owner XI'AN POLYTECHNIC UNIVERSITY
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