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Super black WNN of active azo dye and preparation thereof

A technology of azo dyes and reactive dyes, applied in the direction of azo dyes, reactive dyes, organic dyes, etc., can solve problems such as insufficient depth, low color fixation rate, and unfulfilled blackness

Inactive Publication Date: 2005-10-26
赵卫国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The dye has insufficient depth during dyeing, and the blackness is not full. At the same time, the dye has poor alkali-salt stability and low color fixation rate

Method used

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  • Super black WNN of active azo dye and preparation thereof
  • Super black WNN of active azo dye and preparation thereof
  • Super black WNN of active azo dye and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Weigh 16.8 parts of H acid and 34.5 parts of diazonium salts containing sulfonic acid groups or ethyl sulfone sulfate aniline compounds and couple at 0-15°C and pH=1.5-6.5 to prepare a partial Green light navy blue dye.

Embodiment 2

[0033] Embodiment two: the navy blue dye that embodiment one makes is mixed with WNN yellow, WNN crimson by weight ratio 75-80: 5-10: 20-10 to obtain jet black degree deep, good alkali resistance and salt stability , good reproducibility, good level dyeing, high lifting power, can not only dye and print, but also can be dyed super black WNN, the dye strength is higher than C.I reactive black 5, KN-G2RC black, BED black, ARC black , BES black is 15%-30% higher.

[0034] Table I

[0035]

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PUM

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Abstract

The present invention relates to an active azo dye superblack WNN and its preparation. Said invention also provides its structure formula. Said dye is a mixture formed from several compounds including compound of the above-mentioned structure formula, WNN yellow and WNN dark red, and is made up by using H acid and diazo salt containing sulfonic acid group or ethyl sulfone sulfate aniline compound, and making them be coupled, then mixing them with WNN yellow and WNN dark red according to different ratio. Said dye is suitable for dyeing, printing and discharging cotton fibre, and has good various fastnesses.

Description

technical field [0001] The invention relates to a reactive azo dye super black WNN and its preparation. Background technique [0002] The reactive black KN-B (C.I. reactive black 5) invented in the late 1960s has the following structural formula: [0003] [0004] When the dye is dyed, the depth is not enough, the blackness is not full, and the dye has poor alkali-salt stability and low color fixation rate. Contents of the invention [0005] The purpose of the present invention is to provide a kind of reactive azo dye super black WNN with stable performance, deep jet blackness, and alkali salt stability better than C.I reactive black 5 and its preparation method. [0006] In order to achieve the above object, the structural formula of a kind of reactive azo dye super black WNN of the present invention is as follows: [0007] [0008] (1) R=H, SO 3 h [0009] (2) M=Na, K [0010] In the present invention, the active group R is a group that can be converted into v...

Claims

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Application Information

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IPC IPC(8): C09B62/83
Inventor 赵卫国苏金奇鞠苏华王国民杨军
Owner 赵卫国