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Method for simultaneously preparing disperse red 3B and disperse red 60

A technology of disperse red and amino, applied in the direction of amino-hydroxyanthraquinone dyes, etc., can solve the problems of high production costs of disperse red 3B and disperse red 60

Inactive Publication Date: 2012-08-01
苏州市罗森助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiency that the prior art Disperse Red 3B and Disperse Red 60 production costs are high, and to provide a method for preparing Disperse Red 3B and Disperse Red 60 simultaneously. Red 60 method to reduce production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 200 grams of dry distillation residue into a beaker, add 120 grams of o-dichlorobenzene, heat to 100~110°C, stir until the residue is completely dissolved, then cool to 80°C, and suction filter while it is hot. The filter cake is the coking of the distillation residue products and by-products of the condensation reaction. The filtrate is o-dichlorobenzene and dissolved 3B. The filtrate was cooled to room temperature, and Disperse Red 3B was precipitated from the solvent. After suction filtration, 15 grams of Disperse Red 3B filter cake (dried) was obtained. Disperse Red 3B filter cake quality: intensity 500%; shade is similar to Disperse Red 3B national standard product.

Embodiment 2

[0021] Add 200 grams of dry distillation residue into a beaker, add 120 grams of butyl acetate, heat to 100~110°C, stir until the residue is completely dissolved, then cool to 80°C, and suction filter while it is hot. The filter cake is the coking of the distillation residue products and by-products of the condensation reaction. The filtrate is butyl acetate and Disperse Red 3B dissolved in it. The filtrate is cooled to room temperature, and Disperse Red 3B is precipitated from the solvent. After suction filtration, 18 grams of Disperse Red 3B filter cake (dried) are obtained. Disperse Red 3B filter cake quality: intensity 495%; shade is similar to Disperse Red 3B national standard product.

Embodiment 3

[0023] Add 200 grams of dry distillation residue into a beaker, add 120 grams of cyclohexanone, heat to 100~110°C, stir until the residue is completely dissolved, then cool to 80°C, and suction filter while it is hot. The filter cake is the coking of the distillation residue products and by-products of the condensation reaction. The filtrate is cyclohexanone and Disperse Red 3B dissolved in it. After the filtrate is cooled to room temperature, Disperse Red 3B is precipitated from the solvent, and filtered with suction to obtain 20 grams of Disperse Red 3B filter cake (dried). Disperse Red 3B filter cake quality: intensity 505%; shade is similar to Disperse Red 3B national standard product.

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Abstract

The invention relates to a method for simultaneously preparing disperse red 3B and disperse red 60, which includes the steps: adding at least one organic solvent, which is selected from o-dichlorobenzene, butyl acetate and cyclohexanone, into distillation residue generated in a traditional disperse red 60 preparation process, heating to 100-110 DEG C to lead the distillation residue to completely dissolve, then cooling the dissolved distillation residue to 75-80 DEG C with suction filtration, keeping filtrate, cooling the filtrate to be lower than 25 DEG C, separating out solid with suction filtration, and obtaining the disperse red 3B. The method is used for ingeniously processing the distillation residue generated during traditional disperse red 60 preparation into the disperse red 3B, so that turning waste into wealth is realized, total product yield is increased, economic benefits are remarkable, and environmental protection significance is great.

Description

technical field [0001] The invention relates to a method for simultaneously preparing disperse red 3B and disperse red 60. Background technique [0002] Disperse Red 3B, whose chemical name is 1-amino-2-phenoxy-4-hydroxyanthraquinone, is an important red variety in anthraquinone-type disperse dyes. It is named C.I. Disperse Red 60 according to the "Dye Index", and its color is bright , high-temperature dyeing performance is stable, used for polyester dyeing, plastic coloring and transfer printing, and can also be used for color matching. In industry, 1-aminoanthraquinone is generally used as a raw material, which is directly brominated in 94.5% sulfuric acid medium to generate 1-amino-2,4-dibromoanthraquinone, and then 104.5% oleum is used to adjust the acidity to 100%. Then it is hydrolyzed in the presence of a small amount of catalyst urotropine to obtain 1-amino-2-bromo-4-hydroxyanthraquinone, and finally condensed with phenol in an alkaline medium. According to the pos...

Claims

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Application Information

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IPC IPC(8): C09B1/54
Inventor 李根荣徐新连潘泉根
Owner 苏州市罗森助剂有限公司
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