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Disperse red 60 condensation process

A disperse red and process technology, applied in the field of dyes, can solve the problems of unsatisfactory reaction yield and high cost of high-boiling inert solvents, and achieve the effects of cost reduction, production cost reduction, and contact probability and activity improvement.

Inactive Publication Date: 2020-05-15
JIANGSU YABANG DYE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of waste water produced in the above scheme is less, but the cost of the high-boiling inert solvent used in it is relatively high, and the reaction yield is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 1000kg of phenol, 500kg of 1-amino-2-bromo-4-hydroxyanthraquinone, 140kg of sodium carbonate, and 5kg of sodium dodecylbenzenesulfonate into a 3000L enamel kettle. Heat at 150-155°C and keep it warm for condensation reaction for 6 hours. Take a sample to measure the end point. After the end point is reached, cool down to 95-100°C. Add 1000kg of water at this temperature, then add 30kg of 30% liquid alkali dropwise, and finally cool down to 50-52 Filtrate and wash at ℃ to obtain 475kg of finished product of Disperse Red 60, with a yield of 96% and a content of 99.3%.

Embodiment 2

[0022] Add 1200kg of phenol, 500kg of 1-amino-2-bromo-4-hydroxyanthraquinone, 160kg of sodium carbonate, and 2kg of dodecyltrimethylammonium chloride in a 3000L enamel kettle. Heat up to 150-155°C and keep it warm for 6 hours for condensation reaction, take samples to measure the end point, after the end point, cool down to 95-100°C, add 1200kg of water at this temperature, then drop 50kg of 30% liquid caustic soda, and finally cool down to 50 Filtrate and wash at ~52°C to obtain 480kg of Disperse Red 60 finished product, with a yield of 97% and a content of 99.5%.

Embodiment 3

[0024] Add 1000kg of phenol, 500kg of 1-amino-2-bromo-4-hydroxyanthraquinone, 150kg of sodium carbonate, and 10kg of polyethylene glycol into a 3000L enamel kettle. ℃ and keep it warm for condensation reaction for 6 hours, take samples to measure the end point, after the end point is reached, cool down to 95-100°C, add 1800kg of water at this temperature, then add 33kg of 30% liquid alkali dropwise, and finally cool down to 50-52°C to filter and wash Net, obtained Disperse Red 60 finished product 470kg, yield 95%, content 99.5%.

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Abstract

The invention relates to the technical field of dyes, in particular to a disperse red 60 condensation process. The process comprises the following steps: in a condensation kettle, firstly adding phenol and a 1-amino-2-bromo-4-hydroxyanthraquinone dry product, then adding sodium carbonate and a catalyst, heating to 140-160 DEG C, carrying out reactions at a constant temperature; after the reactionis finished, cooling to 90-100 DEG C, adding water within the temperature range, dropwise adding liquid caustic soda, cooling to 50-55 DEG C after dropwise adding is finished, filtering, cleaning, anddrying to obtain 1-amino-2-phenoxy-4-hydroxyanthraquinone, namely disperse red 60. According to the process, a condensed acid-binding agent (potassium carbonate) is directly substituted by sodium carbonate with a lower price, and a certain amount of a proper phase transfer catalyst is added, so that the contact probability and activity of condensation reactions are improved, the aims of improvingthe product quality and yield and reducing the production cost are fulfilled, and the cost of the disperse red 60 can be reduced by 1500 yuan / ton.

Description

technical field [0001] The invention relates to the technical field of dyes, in particular to a disperse red 60 condensation process. Background technique [0002] Disperse Red 60 is an important high-grade disperse dye; it can be used for dyeing polyester and its blended fabrics after it is commercialized with auxiliary agents; it can also be used as a dye intermediate to further produce Disperse Red 91, Disperse Red 92, and Disperse Red 92. Red 191, etc.; its dry product can also be used as a solvent dye, solvent red 146, used for ink and plastic coloring, and can also be used for transfer printing. [0003] The Chinese invention patent with the publication number CN101003691A discloses a production method of disperse red 60, specifically using 1-aminoanthraquinone as a raw material, and obtaining 1-amino-2-bromo-4-hydroxyanthracene through bromination and hydrolysis in a sulfuric acid medium Quinone is condensed in the phenol medium and in the presence of an acid-binding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B1/54
CPCC09B1/547
Inventor 侯保元汤学斌祝新护
Owner JIANGSU YABANG DYE
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