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Cationic type direct dye and preparation thereof

A cationic and direct technology, applied in dyeing methods, azo dyes, organic dyes, etc., can solve the problems of low coloring rate, poor fastness, low coloring rate, etc., and achieve the effect of simple preparation and wide application

Active Publication Date: 2010-06-30
上海汇友精密化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these dyes have their own shortcomings in application: although direct dyes have good fastness, the coloring rate is not high, and various auxiliaries need to be added to promote dyeing and color fixation; acid dyes have lower coloring rate and are generally used for The surface coloring of paper; basic dyes have a high coloring rate, but the fastness is very poor, especially the light fastness

Method used

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  • Cationic type direct dye and preparation thereof
  • Cationic type direct dye and preparation thereof
  • Cationic type direct dye and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Install a stirring and reflux device in the round bottom flask, add 80g of isopropanol, start stirring and slowly add 12g

[0029]

[0030] and 10g of

[0031]

[0032] Stir to obtain a uniform suspension, heat the reaction solution to boiling (80-82.5°C) within 15-20min, keep the solution at reflux, react for 2h, and then cool to room temperature (25-30°C). Filter the resulting precipitate, wash the filter cake several times with isopropanol solution, then dry and pulverize the filter cake to obtain the following dyes:

[0033]

Embodiment 2

[0035] Install a stirring and reflux device in the round bottom flask, add 80g of isopropanol, start stirring and slowly add 12g

[0036]

[0037] and 10.7g of

[0038]

[0039] Stir to obtain a uniform suspension, heat the reaction solution to boiling (80-82.5°C) within 15-20min, keep the solution at reflux, react for 2h, and then cool to room temperature (25-30°C). Filter the resulting precipitate, wash the filter cake several times with isopropanol solution, then dry and pulverize the filter cake to obtain the following dyes:

[0040]

Embodiment 3

[0042] Install a stirring and reflux device in the round bottom flask, add 80g of isopropanol, start stirring and slowly add 12g

[0043]

[0044] and 11.8g

[0045]

[0046] Stir to obtain a uniform suspension, heat the reaction solution to boiling (80-82.5°C) within 15-20min, keep the solution at reflux, react for 2h, and then cool to room temperature (25-30°C). Filter the resulting precipitate, wash the filter cake several times with isopropanol solution, then dry and pulverize the filter cake to obtain the following dyes:

[0047]

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PUM

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Abstract

The invention provides a cation direct dye, with the following chemical structure general formula (I), wherein, R1 is: -H, -CH3, -CH2CH3, -CL, -OCH3, -COOCH3, -OCH2CH3, -CN; R2 is: -CH3, -CH2CH3, -CH2CH2CONH2, -CH(CH3)CH2CH2CONH2; R3 is: -H, -CH3; R4 is: -H, -CH3; X- is: CL-, Br-, I-, H2PO4-, CH3COO-, oxalate, lactate and other mono, binary or multi acid radicals; n is a natural number ranging from 1 to 4. The invention also discloses the preparation method of the cation direct dye. The obtained cation direct dye has wide application range, particularly has high dyeing degree on the paper andcan be used to color bleaching paper and non-bleaching, with bright color light; besides, the cation direct dye can be used for polyacrylonitrile fiber, modified polyester and cationic dyes to dye the color of nylons, and can be mixed with dyes of same kind when in use.

Description

technical field [0001] The invention relates to a dye and a preparation method thereof, in particular to a cationic direct dye and a preparation method thereof. Background technique [0002] At present, the dyes on the market are mainly for dyeing fiber fabrics, most of which are used to color different fabrics, such as dyeing acrylic with cationic dyes, dyeing polyester with disperse dyes, dyeing wool with direct dyes, acid dyes, reactive dyes, sulfur dyes Or dye cotton, viscose, etc. with vat dyes. Some of the direct dyes, acid dyes, basic dyes, a small amount of vat dyes and vat dyes can be used to color paper. However, these dyes have their own shortcomings in application: although direct dyes have good fastness, the coloring rate is not high, and various auxiliaries need to be added to promote dyeing and color fixation; acid dyes have lower coloring rate and are generally used for The surface of the paper is colored; the coloring rate of basic dyes is high, but the fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/00D06P3/52D06P3/70C09B57/00D21H21/28
Inventor 贾颂今俞伯洪汪旭升王以丹
Owner 上海汇友精密化学品有限公司