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X-type active light-resistant red azo dye and preparation method thereof

A technology of azo dyes and light fastness, which is applied in the direction of azo dyes, reactive dyes, organic dyes, etc., and can solve the problems of low dye utilization rate, wet rubbing fastness of dyed fabrics, low light fastness of light-colored varieties, etc.

Inactive Publication Date: 2010-12-01
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the application process of reactive dyes, the shortcomings of low dye utilization rate, wet rubbing fastness of dyed fabrics and relatively low light fastness of light-colored varieties are also exposed.

Method used

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  • X-type active light-resistant red azo dye and preparation method thereof
  • X-type active light-resistant red azo dye and preparation method thereof
  • X-type active light-resistant red azo dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, the synthesis of reactive photostable red XA

[0011] 1. Preparation of cyanuric chloride and H acid condensation reaction solution

[0012] In a 250mL four-neck flask equipped with a stirrer, dropping funnel and thermometer, add 15g of crushed ice, 0mL of water and 0.011mol of cyanuric chloride to make a slurry at 0°C for 30 minutes, then dropwise add pH=7 within 1 hour. ~8. For the H acid solution with a H acid content of 0.01mol, after the addition, keep the pH of the reaction solution at 2~3, continue to stir and react at 5~8°C for 3 hours, and use an amino indicator to detect the presence of H acid in the solution Afterwards, stop the reaction and filter to obtain a clarified condensate for later use. The reaction formula is as follows:

[0013]

[0014] 2, Preparation of 4-(4-aminobenzoate group)-2,2,6,6-tetramethylpiperidine diazonium salt solution

[0015] Add 30mL of water, 0.01mol of 4-(4-aminobenzoate)-2,2,6,6-tetramethylpiperidine, 3.5mL ...

Embodiment 2

[0020] Embodiment 2, the synthesis of reactive photostable red XB

[0021] The molecular structure formula of reactive photostable red XB is as follows:

[0022]

[0023] The preparation process of reactive light fast red XB is the same as embodiment 1, just 4-(4-aminobenzoate group)-2,2,6,6-tetramethylpiperidine in embodiment 1 is replaced by 4-( 4-aminobenzamido)-2,2,6,6-tetramethylpiperidine to obtain reactive photostable red XB.

Embodiment 3

[0024] Embodiment 3, the synthesis of reactive light fast red XC

[0025] The molecular structure formula of reactive light fast red XC is as follows:

[0026]

[0027] The preparation process of reactive lightfast red XC is the same as in Example 1, but 4-(4-aminobenzoate group)-2,2,6,6-tetramethylpiperidine in Example 1 is replaced by 4-( 3-aminobenzoate group)-2,2,6,6-tetramethylpiperidine to obtain active photostable red XC.

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PUM

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Abstract

The invention discloses an X-type active light-resistant red azo dye and a preparation method thereof. The molecular structure of the active dye comprises hindered amine groups. Compared with active brilliant red X-3B, the active dye has similar dye performance, similar fastness for each wet processing and extremely high dye uptake and color fixation rate and obviously improves the color fastnessto sunlight.

Description

technical field [0001] The invention relates to an organic dye, in particular to an X-type reactive light-fast red azo dye. Background technique [0002] Because of their bright color, wide color spectrum, excellent fastness, simple application process and low price, reactive dyes have developed into a type of dye with the highest utilization rate for natural fiber dyeing, and it is also a type of dye with the fastest development in recent years. However, during the application process of reactive dyes, the shortcomings of low dye utilization rate, wet rubbing fastness of dyed fabrics and relatively low light fastness of light-colored varieties are also exposed. How to overcome these shortcomings of reactive dyes has become a key topic in the research and development of reactive dyes. Contents of the invention [0003] The object of the present invention is to provide a kind of X-type reactive light-fast red azo dye, which has better photo-oxidation resistance, and can ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/085
Inventor 张晓东刘馨栾吉梅
Owner QINGDAO UNIV
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