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High-safety disperse yellow 64 synthesis process

A technology with high safety and synthesis process, applied in the direction of organic dyes, organic chemistry, quinoline phthalone dyes, etc., can solve problems such as safety hazards, and achieve the effect of safety in production process, avoidance of safety hazards and high safety.

Active Publication Date: 2021-07-09
JIANGSU HUAER CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the defect that disperse yellow 64# uses bromine reaction in the prior art and there is a certain potential safety hazard, and to provide a more safe production method

Method used

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  • High-safety disperse yellow 64 synthesis process
  • High-safety disperse yellow 64 synthesis process

Examples

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Effect test

Embodiment 1

[0022] Add 200 g (2 mol) of 98% sulfuric acid in a 500 ml four-neck flask, drop in Disperse Yellow 54 in a stirred state to be 50 g (0.173 mol), stir and heat up to 30-35° C.; add 40.0 g (0.494 mol) of hydrobromic acid dropwise, A total of 24 g (0.50 mol) of ozone was passed through for 1 hour, and the temperature was kept at 35-40°C for 1-2 hours. Then the temperature is raised to 50°C, and the reaction is carried out at 50-60°C for 1-3 hours. Sampling and detection of Disperse Yellow 54<0.5% is qualified. Then under the condition of this temperature, degas bromine for 0.5-1 hour. After the bromine removal was completed, the material was slowly transferred to a 1000ml four-necked flask into which 295g of clear water had been added for isolation for 0.5 to 1.5 hours. Then filter again, and the filter cake is transferred to a four-necked flask into which 500ml of clear water has been added for beating for 0.5 to 1 hour. Then filter, wash with 200 ml of clear water for four t...

Embodiment 2

[0024] Add 220g (2.2mol) of 98% sulfuric acid into a 500ml four-neck flask, and add 50g (0.173mol) of Disperse Yellow 54 under stirring, and heat up to 30-35°C with stirring; add 30.8g (0.38mol) of hydrobromic acid dropwise A total of 48g (1.0mol) of ozone was introduced for 1.5h, and the temperature was kept at 35-40°C for 1-2 hours. Then the temperature is raised to 60°C, and the reaction is kept at 60-75°C for 1-3 hours. Sampling and detection of Disperse Yellow 54<0.5% is qualified. Then under the condition of this temperature, degas bromine for 0.5-1 hour. After the bromine removal was completed, the material was slowly transferred to a 1000ml four-necked flask into which 405g of clear water had been added for isolation for 0.5 to 1.5 hours. Then filter again, and the filter cake is transferred to a four-necked flask into which 500ml of clear water has been added for beating for 0.5 to 1 hour. Then filter, wash with 200 ml of clear water for four times, and then suck d...

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Abstract

The invention discloses a high-safety disperse yellow 64 synthesis process which comprises the following steps: adding a measured part of concentrated sulfuric acid into a reaction container, adding disperse yellow 54 in a stirring state, then dropwise adding hydrobromic acid, and introducing ozone to carry out bromination reaction while keeping the temperature of a reaction system at 30-70 DEG C; and after the bromination reaction is finished, exhausting air to remove bromine, performing separation with water, and pulping, filtering and washing the liquid to obtain the target product disperse yellow 64. According to the preparation process, the safety risk of the original process in the bromine transferring and dropwise adding process is avoided, and the safety of the production process is improved.

Description

technical field [0001] The invention relates to the technical field of dye preparation, in particular to a high-safety disperse yellow 64 synthesis process. Background technique [0002] Disperse Yellow 3G, also known as Disperse Yellow 64, is mainly used for polyester dyeing to obtain bright pure yellow with excellent light fastness. It has good covering property and is the main dye for dyeing medium and light colors. As one of the three primary colors, it can form the three primary colors with Disperse Red 3B (or Disperse Red FB) and Disperse Blue 2BLN (or Disperse Blue FBL). It has good compatibility, good level dyeing, and stable shade. It is also used for direct printing of polyester silk. When used for dyeing polyester-wool blended products, wool staining is less. It can also be used in the dyeing of acrylic fiber and acetate fiber. [0003] At present, the production process of Disperse Yellow 64 in the market is to add 98% acid in the reaction kettle, then put Dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D215/20C09B25/00
CPCC07D215/20C09B25/00
Inventor 宋谷胡影影孙爱生
Owner JIANGSU HUAER CHEM
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