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Preparation method of dye composition

一种染料组合物、分散染料的技术，应用在纺织品印染领域，能够解决无法实现染色均匀性等问题

Active Publication Date: 2020-09-04
SUZHOU TANGHUA NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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 expands, even if Grinding disperse dyes to the nanometer range under the action of dispersants still cannot achieve the uniformity of dyeing, and it is impossible to avoid the difference in front and back colors caused by migration during drying and color development.

Method used

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  • Preparation method of dye composition
  • Preparation method of dye composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Step 1: Preparation of halogenated crosslinking agent

[0072] 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.

[0073] Wherein the mass ratio of oleic acid, hydrogen bromide and chloroform is: 1:0.28~0.35:1.78~2.14.

[0074] The equation for the reaction is:

[0075]

[0076] Step 2: Chitosan Modification

[0077] 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-so...

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 1 is determined as: 1: 0.28: 1.78, and product A is obtained in 70 ℃ of distillations, then in step 2, chitosan, sodium hydroxide, product A, tetrachloromethane The mass ratio of carbonization is determined as: 1: 0.50: 2.30: 5.00, reacts at 80 ℃ for 3 hours, obtains product B, then the mass ratio of glycerol, product B, catalyzer, toluene in step 3 is determined as: 1: 16.50 : 0.07: 4.00, react at 140°C for 4 hours to obtain product C.

[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...

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 1 is determined as: 1: 0.31: 2.00, and product A is obtained by distillation at 73 ° C, then chitosan, sodium hydroxide, product A, tetrachloromethane in step 2 The mass ratio of carbonization is determined as: 1: 0.55: 2.35: 5.50, reacts at 90 DEG C for 3.5 hours, obtains product B, then the mass ratio of glycerol, product B, catalyst, toluene in step 3 is determined 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 dy...

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Abstract

The invention relates to a preparation method of a dye composition. The preparation method comprises the following steps of preparing disperse dye, lauryl sodium sulfate, glycerol, a dispersant and water into turbid liquid, grinding trough the turbid liquid until the particle size of the disperse dye is 30-50nm, and adding a leveling agent and acetic acid to obtain the dye composition. The dye composition disclosed by the invention is suitable for continuous padding type dyeing and coating type dyeing, and can reduce energy consumption, improve dyeing efficiency and improve product quality compared with dye vat dyeing at high temperature and high pressure, so that the color fastness and color uniformity of the fabric can reach the grade A specified by the national standard, and continuousdyeing at normal temperature and normal pressure can replace high-temperature and high-pressure dye vat dyeing.

Description

[0001] The present invention is a divisional application with an application date of March 2, 2018, an application number of 2018101739413, and an invention title of a leveling agent and its preparation method and application. technical field [0002] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a preparation method of a dye composition suitable for continuous padding or coating dyeing of polyester fabrics at normal temperature and pressure. Background technique [0003] 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/48C08B37/08D06P1/16D06P3/54
CPCD06P1/16D06P1/48D06P3/54C08B37/003D06P2001/0092
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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