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Medium-temperature cobalt blue disperse dye

A disperse dye, medium temperature technology, used in azo dyes, organic dyes, monoazo dyes, etc., can solve the problem of low color yield, and achieve excellent fastness to sunlight and washing.

Active Publication Date: 2013-06-12
PENGLAI JIAXIN DYES & CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] But the dye is red light blue, its brilliance is far inferior to C.I disperse blue 56, and the color yield is low when it is hot-melted at 190°C, which needs to be improved

Method used

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  • Medium-temperature cobalt blue disperse dye
  • Medium-temperature cobalt blue disperse dye
  • Medium-temperature cobalt blue disperse dye

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0026] Add 40 milliliters of 98% sulfuric acid in a 250 milliliter four-necked flask, add 9.95 grams of 98 percent 3-amino-5-nitro-2,1-benzisothiazole under stirring, stir to dissolve completely, then 17 g of 40% nitrosyl sulfuric acid was slowly added dropwise at 10°C. React to the end at this temperature to obtain a diazonium solution to be coupled.

[0027] Add 400 milliliters of water in the 2000 milliliter flask, then slowly add 10 milliliters of sulfuric acid while stirring. Then add 13.4 grams of 98% N-ethyl-N-p-methylbenzyl m-toluidine (0.05 gmol) and stir until dissolved , cool down on an ice-water bath, and at the same time add an appropriate amount of crushed ice to the cup to cool down to 0-5°C, start adding the above-mentioned diazo solution dropwise, keep the reaction at 0-5°C until the diazo component disappears, filter and wash with water until neutral. Obtain about 90 grams of filter cake, and the average weight of dry dyestuff is 18 grams. The dye is dissol...

preparation example 2-4

[0031] Dye synthesis conditions and ingredient molecular ratio are the same as Preparation Example 1, the only difference is that N-ethyl-N-p-methylbenzyl m-toluidine in Preparation Example 1 is replaced, and Preparation Example 2 is replaced by N-ethyl-N- M-methylbenzyl m-toluidine, preparation example 3 is replaced by N-ethyl-N-p-chlorobenzyl m-toluidine, preparation example 4 is replaced by N-butyl-N-p-chlorobenzyl m-toluidine, obtaining The general formula and corresponding properties of dyes are shown in the following table:

[0032] Example

preparation example 5

[0034] Dye synthesis conditions and batching ratio are the same as Preparation Example 1, wherein 0.05gmol N- Ethyl-N-p-methylbenzyl-m-toluidine to give the corresponding dye. Its absorption wavelength is λ max =620nm. The dye is a mixed dye, and its structural formula is:

[0035]

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PUM

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Abstract

The invention relates to a medium-temperature cobalt blue disperse dye, of which the general formula is shown in the specification, wherein R1 is H or methyl; R2 is C1-C4 alkyl; and R3 is Cl or methyl. The medium-temperature cobalt blue disperse dye provided by the invention can be used for dyeing and printing of polyester fibers and blended fabrics, is suitable for high-temperature high-pressuredyeing, is especially suitable for an energy-saving, discharge-reducing and medium-temperature thermosol dyeing process, and has good solarization performance and water washing fastness.

Description

technical field [0001] The invention relates to a disperse dye, in particular to a medium-temperature brilliant blue disperse dye. Background technique [0002] Disperse dyes are mainly used for dyeing and printing of polyester and its blended fabrics. The usual dyeing processes are high temperature and high pressure dyeing and hot melt dyeing. The high temperature and high pressure dyeing method usually dyes knitted fabrics, is intermittent dyeing, has small production capacity, and discharges a lot of waste liquid. The hot-melt dyeing method usually dyes woven fabrics, is continuous dyeing, has a large production capacity, and a small amount of wastewater discharge. Because of this advantage, the hot-melt dyeing method has shown a trend of substantial growth in recent years. [0003] Disperse blue occupies the primary position among the three primary colors, among which C.I disperse blue 56 and C.I disperse blue 79 are widely used at home and abroad and enjoy a high rep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/09C09B67/38D06P1/16D06P3/54D06P3/85
Inventor 王喆王淑香张绍阳
Owner PENGLAI JIAXIN DYES & CHEM
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