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Method for preparing bright yellow active dye stuff K-6G

A technology of reactive dyes and bright yellow, applied in reactive dyes, dyeing methods, azo dyes, etc., can solve the problems of poor chlorine bleaching fastness, color supply, color fixation rate and low solubility, so as to eliminate the discharge of sewage, Excellent color giving power and high profit effect

Inactive Publication Date: 2006-07-19
泰州市姜堰区东风染料化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fastness to chlorine bleaching is poor, so it is not suitable for fabrics that require chlorine bleaching or high chlorine bleaching resistance after dyeing. It can also be used for printing, and the products produced by the salting out process have low color yield, color fixation rate and solubility.

Method used

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  • Method for preparing bright yellow active dye stuff K-6G
  • Method for preparing bright yellow active dye stuff K-6G
  • Method for preparing bright yellow active dye stuff K-6G

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] raw material name

[0032] 2. The K-6G preparation process of the present invention operates as follows:

[0033] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0034] Put 2000L of bottom water in the dissolving pot, add 162.97kg of sodium 2,4-diaminobenzenesulfonate, stir and clarify, adjust pH=5.5 with dilute hydrochloric acid, temperature is 18°C, volume is 3200L, C%=6 in the solution.

[0035] b. The first condensation reaction: add 200L of water and crushed ice into the shrinkage tank, add 150kg of industrial 99.5% cyanuric chloride by weight, beat for 45 minutes, adjust the pH to 2.0 with dilute hydrochloric acid, and the temperature is 0°C. Add the sodium 2,4-diaminobenzenesulfonate solution into a shrink pot within 1.5 hours, stir and react for 2 hours after the addition, and control the solution temperature at 5°C after the reaction.

[0036] c. Neutralize acidification

[0037] Quickly add 10% soda water within 10 minutes to adjust the pH ...

Embodiment 2

[0055] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0056] Put 2000L of bottom water in the dissolving pot, add 162.97kg of sodium 2,4-diaminobenzenesulfonate, stir and clarify, adjust pH=6.0 with dilute hydrochloric acid, temperature is 20°C, volume is 3200L, C%=7 in the solution.

[0057] b. The first condensation reaction: add 200L of water and crushed ice to the shrinkage tank, add 150kg of industrial 99.5% cyanuric chloride, beat for 45 minutes, adjust the pH to 2.5 with dilute hydrochloric acid, and the temperature is 5°C. Add the sodium 2,4-diaminobenzenesulfonate solution into the shrink pot within 2 hours, stir and react for 2 hours after the addition, and control the solution temperature at 8°C after the reaction.

[0058] c. Neutralize acidification

[0059] Quickly add 10% soda water within 10 minutes to adjust the pH of the condensate to 6.5, stabilize for 2 minutes, add crushed ice, quickly add hydrochloric acid, increase the volume to 4500L, add disso...

Embodiment 3

[0071] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0072] Put 2000L of bottom water in the dissolving pot, add 162.97kg of sodium 2,4-diaminobenzenesulfonate, stir and clarify, adjust pH=5.0 with dilute hydrochloric acid, temperature is 15°C, volume is 3200L, C%=6 in the solution.

[0073] b. The first condensation reaction: add 200L of water and crushed ice to the shrinkage tank, add 150 kg of industrial 99.5% cyanuric chloride, beat for 45 minutes, adjust the pH to 1.5 with dilute hydrochloric acid, and the temperature is 0°C. Add 2,4-diaminobenzenesulfonate sodium solution into a shrink pot within 1.5 hours, stir and react for 2 hours after the addition, and control the solution temperature at 2°C after the reaction.

[0074] c. Neutralize acidification

[0075] Quickly add 10% soda water within 10 minutes to adjust the pH of the condensate to 5.5, stabilize for 2 minutes, add crushed ice, quickly add hydrochloric acid, increase the volume to 4500L, add dissolve...

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Abstract

The related preparation method for bright-yellow reactive dyes K-6G for dyeing and printing to cotton, hair, silk, leather, polyamide synthetic fabric and other fibre mix-fabric comprises: with 2, 4-sodium biaminobenzoic sulfonate, cyanuric chloride, NaNO2, HCl, 3-carbamoyl-4-methyl-6- hydroxyl-N-acetaldehydepyridone, and sodium p-anilinesulfonate as materials; dissolving, first condensing, neutralizing, coupling, second condensing, spray drying, blending, and obtaining the target. This invention can reduce pollution and cost, and has high yield fit to industrial production.

Description

technical field [0001] The invention relates to a preparation method of bright yellow reactive dye K-6G suitable for dyeing and printing cotton, wool, silk, leather, polyamide synthetic fiber and other blended fiber fabrics. Background technique [0002] Reactive dyes have the remarkable characteristics of bright color, excellent application performance, convenient use and strong applicability. In the past 20 years, due to environmental and ecological constraints and economic factors, the requirements for the production and preparation of reactive dyes, dyeing rate, color fixation rate and dyeing wastewater have become higher and higher. In the patent application for reactive dyes, the salting out The preparation process is rare, and the research and development of reactive dyes in various countries has evolved from the salting-out process to the spray-drying process. There is a kind of bright yellow reactive dye at present, and its molecular structural formula is as shown ...

Claims

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Application Information

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IPC IPC(8): C09B62/51D06P1/38D06P3/60D06P3/14D06P3/32D06P3/24
Inventor 戴春林陈才美李兴喜
Owner 泰州市姜堰区东风染料化工厂
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