Dyeing method

A dyeing method and technology for dyeing solution, applied in the field of textile printing and dyeing, can solve problems such as inability to achieve dyeing uniformity

Active Publication Date: 2018-08-28
SUZHOU TANGHUA NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] But, when this chitosan derivative dispersant is added in the dyestuff and carries out large-scale continuous dyeing under normal temperature and pressure, because the contact time of dyestuff and fabric is very short, only 10~20s, and the area of ​​fabric ex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Step 1: Preparation of halogenated crosslinking agent

[0071] Under the condition of ice-water bath, add oleic acid, hydrogen bromide, and chloroform respectively in a certain mass ratio to the three-necked flask, reflux with a straight condenser tube, stir, and react for 30-50 minutes, wash the product with water until it is neutral, add distilled bottle, and placed in a constant temperature water bath at 70-75°C to distill off the solvent chloroform and unreacted hydrogen bromide to obtain the yellow product A.

[0072] The mass ratio of oleic acid, hydrogen bromide and chloroform is: 1:0.28-0.35:1.78-2.14.

[0073] The equation for the reaction is:

[0074]

[0075] Step 2: Chitosan Modification

[0076] Add chitosan, sodium hydroxide, and product A to carbon tetrachloride in a certain proportion, stir at 80-100°C, react for 3-4 hours, and distill under reduced pressure at 40°C to obtain product B. Among them, the chitosan is selected from the water-soluble ch...

Embodiment 2

[0093] The overall idea of ​​embodiment 2 is carried out according to embodiment 1, and specific parameters are as follows:

[0094] The mass ratio of oleic acid, hydrogen bromide, and chloroform in step one is set as: 1:0.28:1.78, and product A is obtained by distillation at 70 ° C, and then chitosan, sodium hydroxide, product A, tetrachloromethane The mass ratio of carbonization is set as: 1:0.50:2.30:5.00, react at 80°C for 3 hours to obtain product B, and then set the mass ratio of glycerin, product B, catalyst, and toluene in step 3 as: 1:16.50 : 0.07: 4.00, product C was obtained by reacting at 140°C for 4 hours.

[0095] In step four, disperse red 3B, sodium lauryl sulfate, glycerin, and dispersant are ground with mass fractions of 2wt%, 3wt%, 2wt%, and 1wt% to prepare nano dyes, and then use 1.0g / L Add product C, add acetic acid to adjust the pH value of the dyeing slurry to 5.5, choose 190T, 58g / m 2 For polyester taffeta, according to step 4 dyeing method 1, set the...

Embodiment 3

[0096] The overall idea of ​​embodiment 3 is carried out according to embodiment 1, and specific parameters are as follows:

[0097] The mass ratio of oleic acid, hydrogen bromide, and chloroform in step one is set as: 1:0.31:2.00, and product A is obtained by distillation at 73°C, and then chitosan, sodium hydroxide, product A, tetrachloromethane The mass ratio of carbonization is set as: 1:0.55:2.35:5.50, react at 90°C for 3.5 hours to obtain product B, and then set the mass ratio of glycerin, product B, catalyst, and toluene in step 3 as: 1:17.00 : 0.08: 4.10, reacted at 145°C for 4.5 hours to obtain product C.

[0098] In step 4, disperse yellow G, sodium lauryl sulfate, glycerin, dispersant are ground with the mass fraction of 3.5wt%, 4wt%, 2.5wt%, 1.5wt%, prepare nano-dye, then with 1.5g / Add the amount of L to solid C, add acetic acid to adjust the pH value of the dyeing slurry to 6.0, choose 300T, 63g / m 2 Pongee, according to step 4 dyeing method 1, set the fabric ru...

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Abstract

The invention relates to a dyeing method. The dyeing method comprises the following steps: continuously dyeing at normal temperature and normal pressure; importing a desized texture into a dye tank, making the texture with a dye composition, and then carrying out drying and coloring treatment to finish dyeing, wherein the operation speed of the texture is controlled to 500 to 100m/min; or coatingthe foamed dye composition to the surface of the desized texture, and then carrying out drying and coloring treatment to finish dyeing, wherein the operation speed of the texture is controlled to 80 to 120m/min; the coating speed of the dye composition is 0.30 to 0.45m<3>/min; the dye composition comprises a dye leveler; the structural formula of the dye leveler is shown in the description; n is anumber of 5 to 10. The dyeing method disclosed by the invention has the advantages of high dyeing speed, low dyeing consumption, low energy consumption and uniform color without color difference; a product can reach the level of grade A product meeting state-specified standards.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a method suitable for continuous padding or coating dyeing of polyester fabrics at normal temperature and pressure. Background technique [0002] The textile industry has made great contributions to my country's economic development, and the textile printing and dyeing industry employs more than 50 million people. Up to now, it has faced very serious problems of environmental pollution and energy shortage. The daily discharge of printing and dyeing wastewater reaches 6 million tons. Not only is the composition complex and changeable, but also the concentration is high, the chroma is deep, the COD value, Cr value are large, and it also contains a variety of toxic and harmful substances, which brings great impact on wastewater treatment and standard discharge. difficulty. At the same time, the printing and dyeing industry is also a resource-consumin...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/48D06P1/62D06P1/651D06P3/54C08B37/08
CPCD06P1/16D06P1/48D06P1/627D06P1/65118D06P3/54C08B37/003
Inventor 陈艳珍王鹏陈精明曾桂香张仁海黄海彬
Owner SUZHOU TANGHUA NANO TECH
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