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A kind of preparation method of environment-friendly CI disperse orange 29

An environmentally friendly technology for dispersing oranges, applied in the direction of organic dyes, etc., can solve the problems of restricting product market application, anthranilic ether exceeding the standard, etc., and achieve the effect of economical, simple and efficient method

Active Publication Date: 2018-01-16
浙江双冠染料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the directly synthesized CI Disperse Orange 29, the detectable anthranilic ether greatly exceeds the standard, which seriously restricts the market application of this product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 300 milliliters of water into a 3-liter beaker, and slowly add 84 grams of CI Disperse Orange 29 filter cake that can detect 6500 ppm of anthraniloid under stirring (add water according to the stirring situation). After all the addition was complete, stirring was continued for 2 hours.

[0021] Add water to adjust the volume to 2.5 liters, and add 35 grams of 30% sodium hydroxide solution to make the pH of the system greater than 9. Raise the temperature to 75-80°C and stir for 1 hour. Slowly add about 13 grams of 98% sulfuric acid (the amount is subject to the pH value adjustment) to adjust the pH value of the system to 7.5-8.0.

[0022] Vacuum filtration, washing the filter cake with water until the filtrate is basically colorless. Obtain 80 grams of CI Disperse Orange 29 filter cake that can detect 250 ppm of anthranil.

[0023] Sand the above-mentioned treated filter cake with 80 grams of diffusing agent (adjust the solid content of the slurry to 38-42% with ...

Embodiment 2-4

[0025] According to the steps and method of Example 1, changing the composition and dosage of alkaline substances and acidic substances can also obtain the finished product of CI Disperse Orange 29 which is environmentally friendly.

[0026] Example

[0027] In summary, the method of the present invention is simple and economical, and the limit of detectable anthranil in the dye product of CI Disperse Orange 29 is below 150ppm, which meets the national standard; thus the dyed textile meets the EU standard , therefore, has a strong promotional value.

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PUM

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Abstract

The invention discloses a preparation method of environment-friendly CI disperse orange 29, which belongs to the technical field of disperse dyes. The preparation method comprises: stirring and dispersing the dye filter cake of untreated CI disperse orange 29 in water into a slurry; At ‑100°C, use sodium hydroxide and / or sodium carbonate to adjust the pH to greater than 9, and then use sulfuric acid and / or hydrochloric acid to adjust the pH to 7‑9; then filter and separate, and wash the filter cake with water until the pH is neutral; the separated environmental protection Type CI Disperse Orange 29 filter cake, through sanding, coloring, drying commercial processing of disperse dyes, the finished dye product of CI Disperse Orange 29 which is environmentally friendly can be obtained. The method of the present invention is simple and economical, and can limit the detectable anthranilic ether in the dye product of CI Disperse Orange 29 to below 150ppm, which meets the national standard; thus the dyed textile meets the EU standard.

Description

technical field [0001] The invention relates to a preparation method of environment-friendly CI disperse orange 29, which belongs to the technical field of disperse dyes. Background technique [0002] CI Disperse Orange 29 is a widely used disperse dye. It uses p-nitroaniline, anthranil and phenol as main raw materials, and is produced through two times of diazotization and coupling. In 2000, the European Union promulgated the textile "Oeko-Tex Standard 100 (2000 edition)" standard, which limited the 23 kinds of harmful aromatic amines detected on textiles to 20ppm. Anthranil is one of them. [0003] In 2004, China formulated the national standard "Limits and Determination of 23 Harmful Aromatic Amines in Dyestuff Products" (GB19601-2004) according to the limit standards of 23 kinds of harmful aromatic amines in EU textiles and the maximum amount of dyes used in textiles. Limit 23 kinds of harmful aromatic amines (including anthranil) that can be detected in dye products t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/54C09B67/14
Inventor 杨嘉俊马金华
Owner 浙江双冠染料有限公司
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