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A reactive green dye

A green dye, reactive technology, used in reactive dyes, azo dyes, organic dyes, etc., can solve the problems of large differences in fiber directivity, poor fiber head and tail, and inconsistent fiber speed, achieving excellent performance, high Fixing rate, the effect of improving the fixing rate

Inactive Publication Date: 2015-11-18
ZHEJIANG SHUNLONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above method can obtain green dyes with bright color and good performance, due to the difference in performance between yellow dyes and blue dyes, their directness to fibers is very different, so that the speed of dyeing on fibers is inconsistent, resulting in dyeing During the process, the color flower will appear, and it will also cause the head-to-tail difference and edge center difference of the fiber at the same time, which cannot meet the needs of the market.

Method used

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  • A reactive green dye
  • A reactive green dye
  • A reactive green dye

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] 38.3 parts of 2-naphthylamine-3,6,8-trisulfonic acid were beaten in 200 parts of water and 100 parts of crushed ice for 1 hour, keeping the temperature at 0-5°C, adding 6.9 parts of sodium nitrite (dissolved in 20 Parts of water), carry out diazotization reaction at 5-8°C for 1 hour, add sulfamic acid to destroy excess nitrous acid, then add 15.1 parts of m-ureidoaniline, adjust pH5.1 with 120 parts of 15% sodium carbonate solution ~5.8 Carry out the coupling reaction for 3 hours, which is the end point, and the following dye precursor (3-1) is obtained

[0046]

example 2～19

[0048] The following yellow dye precursors 3-2-19 can be obtained in a similar way:

[0049]

[0050]

[0051]

[0052]

example 20

[0054] Add 100 parts of water and 38.2 parts of bromine into the beaker, stir, and after raising the temperature to 70°C, add 45.1 parts of 2,4-diaminobenzenesulfonic acid, 40 parts of baking soda, and add 2 react with cuprous chloride, and reach the end point after 5 hours of reaction, add 150 parts of water, heat up to 85-95°C, keep warm for 1 hour, filter, collect the filtrate, neutralize with 100 parts of 30% hydrochloric acid, and adjust the temperature 15-20°C, make all the materials precipitate, filter, collect the filter cake, add 200 parts of water to dissolve, adjust the pH to 6-6.5 with soda ash, and obtain the aqueous solution of the following dyes.

[0055]

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Abstract

The invention relates to an active green dye. The active green dye is characterized in that the green dye is as shown in a general formula (I) or a general formula (II).

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a dye, more specifically to a reactive green dye. Background technique [0002] With the improvement of living standards, people begin to pay more and more attention to the colors and styles of their usual clothes. As a result, there is more demand for clothes with fuller colors and stronger coloring. [0003] The green reactive dyes currently on the market are mainly made of yellow dyes and blue dyes. For example, patent application 200710023515.3 discloses a compound dark green reactive dye, which is composed of reactive navy blue and reactive yellow. Reactive navy blue , Active yellow weight percent distribution ratio is 60-80:40-20. [0004] Patent application 201110264330.8 discloses a three-primary-color reactive dye composition, which is composed of three dye compounds with different structural formulas, thereby providing reactive dye compositions with different colors such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/50C09B62/085C09B62/095C09B62/51
Inventor 朱海根
Owner ZHEJIANG SHUNLONG CHEM