Method for dyeing wool by use of natural dyestuff-gardenia yellow

A natural dye, gardenia yellow technology, applied in the field of textile printing and dyeing, to achieve the effects of increased temperature resistance, good dyeing uniformity, and high light fastness

Inactive Publication Date: 2014-10-08
天津天绿健科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Place the pretreated wool in a 9g / L formaldehyde solution with a pH of 9.5 and a temperature of 50°C to react for 48 hours, then adjust the pH of the solution to 7.0, continue the reaction for 1 hour, take it out, wash the wool with clean water, and set aside;

[0023] Add 5% (owf) gardenia yellow dye, and prepare a dye solution at a bath ratio of 1:30, then add NaCl5g / L, JFC0.1g / L, stir evenly, and adjust the pH value to 5.0.

[0024] Put the tanned wool into the dyeing solution, take it out after dipping at 70°C for 30 minutes, and then put it into the post-mordant bath with a pH value of 4.0. The mordant is aluminum sulfate, the dosage is 5% owf, and at 65°C, Treat for 20 minutes, take it out, wash off the floating color, and let it dry.

[0025] Under these conditions, the light fastness is 2-3, the K / S value is 2.95, and the dyeing rate is 88.69%.

Embodiment 2

[0027] Place the pretreated wool in a 9g / L formaldehyde solution with a pH of 9.5 and a temperature of 50°C to react for 48 hours, then adjust the pH of the solution to 7.0, continue the reaction for 1 hour, take it out, wash the wool with clean water, and set aside;

[0028] Add 10% (owf) gardenia yellow dye, and prepare a dye solution at a bath ratio of 1:50, then add NaCl5g / L, JFC0.1g / L, stir evenly, and adjust the pH value to 9.0.

[0029] Put the tanned wool into the dye solution, take it out after dyeing at 90°C for 10 minutes, and then put it into the post-mordant bath with a pH value of 4.0. The mordant is aluminum sulfate, the dosage is 5% owf, and at 65°C, Treat for 20 minutes, take it out, wash off the floating color, and let it dry.

[0030] Under these conditions, the light fastness reaches grade 3, and the K / S value is 2.23.

Embodiment 3

[0032] First put the pretreated wool in a 9g / L formaldehyde solution with a pH of 9.5 and a temperature of 50°C to react for 48 hours, then adjust the pH of the solution to 7.0, continue the reaction for 1 hour, take it out, wash the wool with clean water, and set aside;

[0033] Add 1% (owf) gardenia yellow dye, and prepare a dye solution at a bath ratio of 1:10, then add NaCl5g / L, JFC0.1g / L, stir evenly, and adjust the pH value to 2.0.

[0034] Put the tanned wool into the dye solution, take it out after dyeing at 50°C for 60 minutes, and then put it into the post-mordant bath with a pH value of 4.0. The mordant is aluminum sulfate, and the dosage is 5% owf. After 20 minutes, take it out, wash off the floating color, and let it dry.

[0035] Under these conditions, the light fastness reaches grade 3, and the K / S value is 2.53.

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Abstract

The invention discloses a method for dyeing wool by use of natural dyestuff-gardenia yellow, belonging to the field of textile printing and dyeing. The method comprises the following steps: (1) tanning wool, namely placing the wool in a 9g/L formaldehyde solution with pH value of 9.5 and reacting at 50 DEG C for 48h, then adjusting the pH value of the solution and continuing to react for 1h, taking the wool out and cleaning for later use; (2) preparing dyeing liquid, namely adding dyestuff, preparing the dyeing liquid according to a bath ratio, then adding NaCl and JFC (fatty alcohol-polyoxyethylene ether), stirring uniformly, and adjusting the pH value; and (3) dyeing and carrying out post treatment, namely performing dip dyeing on the tanned wool in the dyeing liquid, taking out and placing into afterchrome dye bath with pH value of 4.0, treating for 20min at 65 DEG C, taking the wool out, washing off the unfixed dyes and airing. The method adopts an optimized tanning method during tanning, so that the tolerable temperature of the wool is greatly improved, and the wool can be dyed at high temperature without curling.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing, and in particular relates to a method for dyeing wool with natural dye gardenia yellow. Background technique [0002] At present, the dyes used in the textile printing and dyeing industry are mainly synthetic dyes, and some of these dyes themselves, their raw materials or intermediates are difficult to degrade, or even carcinogenic, which not only pollutes the environment, but also affects production. Workers and consumers also pose hazards. [0003] With the improvement of people's living standards, environmental protection and health requirements have also been put forward for textiles. Therefore, natural dyes have once again attracted the attention of the textile industry. [0004] Scientists such as South Korea, North Korea, the United Kingdom, and the United States have carried out some research on dyeing natural fiber fabrics with vegetable dyes. In Japan, the "Grass Dyeing" Re...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P3/14D06P5/10
Inventor 李政陈曦
Owner 天津天绿健科技有限公司
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