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Acidic extractable white yellow dye compound for fur and its synthesis and application method

A synthesis method and compound technology, applied in chemical instruments and methods, dyeing methods, azo dyes, etc., can solve the problems that fur is sensitized to human body, cannot meet industry requirements, deep residual liquid, etc., and achieve superior compatibility, Good light fastness, full color effect

Active Publication Date: 2017-10-24
北京泛博清洁技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the residual liquid of disperse dyes in the dyeing process is deep and the pollution is large.
The dyed fur is sensitizing to the human body. As the country’s pollution requirements for the fur printing and dyeing industry are getting higher and higher and consumers’ safety requirements for fur products are increasing, the original disperse grass dyes can no longer meet the industry requirements. The industry needs a new dye to meet the national environmental protection requirements

Method used

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  • Acidic extractable white yellow dye compound for fur and its synthesis and application method
  • Acidic extractable white yellow dye compound for fur and its synthesis and application method
  • Acidic extractable white yellow dye compound for fur and its synthesis and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A kind of synthetic method of acid extractable white yellow dye compound for fur, comprises the following steps:

[0063] (1) Diazotization reaction:

[0064] Add 100mL of water to a 500mL beaker, add 16.1g of o-aminobenzotrifluoride, add 330g of 30% concentrated hydrochloric acid, and stir rapidly to make the material uniform.

[0065] Add 30 mL of water to an 80 mL beaker, add 7.34 g of sodium nitrite, and stir to completely dissolve it.

[0066] Add crushed ice to the above-mentioned 500mL beaker to keep the temperature of the material at 8-10°C, then add sodium nitrite solution in a thin stream (completely added within 30-60 seconds), and keep warm at 5-10°C for 1.5 hours Then add sulfamic acid to remove excess sodium nitrite.

[0067] (2) Sulfonation:

[0068] Add 90mL of dilute sulfuric acid and 25mL of oleum with a mass fraction of 20% in a 500mL three-necked flask equipped with a thermometer. In the pressure dropping funnel, add slowly and control the temper...

Embodiment 2

[0081] A kind of synthetic method of acid extractable white yellow dye compound for fur, comprises the following steps:

[0082] (1) Diazotization reaction:

[0083] Add 100 mL of water to a 500 mL beaker, add 10 g of o-aminobenzotrifluoride, add 250 g of concentrated hydrochloric acid with a mass fraction of 20%, and stir rapidly to make the material uniform.

[0084] Add 30 mL of water to an 80 mL beaker, add 5 g of sodium nitrite, and stir to dissolve it completely.

[0085] Add crushed ice to the above-mentioned 500mL beaker to keep the temperature of the material at 5-8°C, then add sodium nitrite solution in a thin stream (completely added within 30-60 seconds), and keep warm at 5-12°C for 1 hour Then add sulfamic acid to remove excess sodium nitrite.

[0086] (2) Sulfonation:

[0087] Add 90mL of dilute sulfuric acid and 10mL of oleum with a mass fraction of 20% in a 500mL three-necked flask equipped with a thermometer, and control the temperature in a water bath at 2...

Embodiment 3

[0100] A kind of synthetic method of acid extractable white yellow dye compound for fur, comprises the following steps:

[0101] (1) Diazotization reaction:

[0102] Add 100 mL of water to a 500 mL beaker, add 20 g of o-aminobenzotrifluoride, add 400 g of concentrated hydrochloric acid with a mass fraction of 37%, and stir rapidly to make the material uniform.

[0103] Add 30 mL of water to an 80 mL beaker, add 10 g of sodium nitrite, and stir to dissolve it all.

[0104] Add crushed ice to the above-mentioned 500mL beaker to keep the temperature of the material at 12-15°C, then add sodium nitrite solution in a thin stream (completely added within 30-60 seconds), and keep warm at 12-15°C for 3 hours Then add sulfamic acid to remove excess sodium nitrite.

[0105] (2) Sulfonation:

[0106]Add 90mL of dilute sulfuric acid and 35mL of oleum with a mass fraction of 20% in a 500mL three-necked flask equipped with a thermometer, and control the temperature in a water bath at 30°C...

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Abstract

The invention discloses an acidic dye compound capable of stripping white and yellow colors for fur coats as well as a synthesis method and an application method thereof. According to the invention, as a monoazo-acidic dye with a molecular formula of C18H20N3S104F3, the acidic dye compound capable of stripping the white and yellow colors for the fur coats has quite a small relative molecular mass 431, and is very suitable for dying the fur coats. The synthesis method disclosed by the invention has the advantages of simplicity and convenience in operation, easiness for condition control and low operation cost. As an environment-friendly product without allergenicity and 24 kinds of forbidden aromatic amine structures, the acidic dye compound capable of stripping the white and yellow colors for the fur coats, synthesized by the method disclosed by the invention has the advantages of saturated color, brilliant luster, high color fastness properties, excellent compatibility and high dyeing rate and cleaning rate, has little influence on the environment because of relatively shallow residual dyeing liquid, is very applicable as a dye capable of stripping the white and yellow colors, and enriches the variety of colors in the field of fur dyeing.

Description

technical field [0001] The invention relates to the technical field of animal fur treatment, in particular to an acidic extractable white yellow dye compound for fur and its synthesis and application method. Background technique [0002] Since the reform and opening up, China's economy has made great progress. The economic aggregate has grown exponentially, rapidly surpassing many developed countries, and people's living standards have improved greatly. However, it took China 30 years to complete the road that many developed countries took hundreds of years to complete. This is a miracle of economic development, but it has also brought great damage to people's living environment. This brutal and savage economic growth method eventually brought us all kinds of water, air, soil and other environmental pollution. The city's smog shrouded the sky every day, and people could only live in a blurry world. [0003] The fur industry is also a traditional industry with a lot of pollu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/46C09B29/08D06P3/30D06P1/39
CPCC07C309/46C09B29/0844D06P1/39D06P3/3016
Inventor 苏巨雷郑超斌郑红超郝安生
Owner 北京泛博清洁技术研究院有限公司