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Method for preparing disperse blue 60 and homologues thereof

A technology of homologues and disperse blue, applied in chemical instruments and methods, organic dyes, anthracene dyes, etc., can solve problems such as poor solubility, achieve good quality, high product yield, and solve the effects of steam consumption

Active Publication Date: 2010-09-01
浙江长征化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves upon existing methods used during condensations that involve adding an organic substance called naptha oil or other oily liquid into one's solution beforehand with another chemical compound like glycerin monoether (GMO). By replacing some alcohol from this mixture with water, we aimed towards reducing harmful emissions such as volatile organics and greenhouse gas production while also increasing yields due to improved efficiency compared to traditional processes. Additionally, it suggests treating the resulting crude solutions containing these components through various techniques including filtering, purification, concentration/reuse, etc., further enhancing their effectiveness over time. Overall, our technical results include reduced costs associated with producing products without excessive amounts of potentially hazardous materials, increased output levels, lower power usage, lesser fuel consumptions, better control over factors affecting performance, and more efficient utilization of resources.

Problems solved by technology

Techn problem addressed in this patents relates to producing stable yellowish green colored crystal violet dichro lake dyebathion black polymer that can efficiently release silver from yarn during spinning processes without causing any issues such as reduced efficiency due to loss of volatile organics.

Method used

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  • Method for preparing disperse blue 60 and homologues thereof
  • Method for preparing disperse blue 60 and homologues thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1,4-diamino-2,3-dicarboximide anthraquinone is synthesized by a method well known in the art, and the specific steps are: add 2000kg of o-dichlorobenzene into the sulfonation kettle, heat up to 120°C for dehydration , cooled to 50°C and put in 250kg 1,4-diaminoanthraquinone, added dropwise 480kg chlorosulfonic acid at 50-55°C for sulfonation reaction, after adding, slowly raised the temperature to 140°C, and kept the temperature at 140-145°C for 7 hours ; After the sulfonation is completed, cool to 70°C, add 3000L of water to the distillation kettle, pump in the prepared sulfonation material, and then adjust the pH to about 8 with liquid alkali, react and distill, after distillation, filter; the filtrate is transferred to In the cyanidation pot, add 500kg of 30% sodium cyanide aqueous solution, then add anti-staining salt for cyanidation, add dilute sulfuric acid dropwise to control the pH value to 9.0-9.5, and the cyanidation reaction temperature is 98°C; Add sodium bi...

Embodiment 2

[0028] After the enamel kettle of 5000L is put into Example 1 and the condensation reaction is completed, the mother liquor 2000kg is obtained by filtration, and the stirring is started, and the prepared wet product 1,4-diamino-2,3-dicarboximide anthraquinone (reduced dry 450kg), after throwing in, add 150kg of γ-methoxypropylamine that has been prepared, cover the lid of the kettle, stir for half an hour, heat up to 102°C, the reaction pressure is 0.13MPa, keep warm for 6 hours, then cool to 60°C, filter , the mother liquor obtained by filtration was collected in the mother liquor tank, and the filter cake was washed to neutrality to obtain Disperse Blue 60.

Embodiment 3

[0030] Put the enamel kettle of 5000L into Example 2 after the condensation reaction is completed and filter to obtain 1500kg of mother liquor, 500kg of water, start stirring, and add the prepared wet product 1,4-diamino-2,3-dicarboximide anthracene Quinone (dried 450kg), after throwing in, add 160kg of γ-methoxypropylamine that has been prepared, cover the pot, stir for half an hour, heat up to 95°C, and the reaction pressure is 0.11MPa, keep warm for 6 hours, and then cool to 60 °C, filter, and collect the mother liquor obtained by filtration in the mother liquor tank, wash the filter cake with water until neutral, and obtain Disperse Blue 60.

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Abstract

The invention discloses a method for preparing disperse blue 60 and homologues thereof. The method comprises the following steps of: adding a 1,4-diamino-2,3-dicarboximide wet product into water, adding gamma-alkoxy propylamine into the mixture, performing condensation reaction under the conditions that the temperature is between 95 and 105 DEG C and the reaction pressure is between 0.07 and 0.18 MPa for 4 to 6 hours, and after the condensation reaction, filtering, washing and drying to obtain the disperse blue 60 and the homologues thereof; and after completing the condensation reaction, re-using the filtered mother solution in the next condensation reaction. In the method for preparing the disperse blue 60 and the homologues thereof, water is used as a solvent, so that the method realizes pollution-free production and circular economy, and has extremely obvious economic and environmental benefits.

Description

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Claims

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Application Information

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Owner 浙江长征化工有限公司
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