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Method for preparing wool reactive-dye brilliant blue

A technology of reactive dyes and temperature control for wool, applied in reactive dyes, azo dyes, organic dyes, etc., can solve the problems of low color yield, large consumption of raw materials, dust pollution, etc., achieve good reproducibility, reduce raw materials Consumption, the effect of increasing production capacity

Active Publication Date: 2009-11-25
TIANJIN DEK CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this process, the consumption of raw materials is large, the color yield is low, and the method of post-blending will cause dust pollution to the environment

Method used

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  • Method for preparing wool reactive-dye brilliant blue
  • Method for preparing wool reactive-dye brilliant blue
  • Method for preparing wool reactive-dye brilliant blue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Dissolution of bromic acid and M acid: add 1000L of bottom water in the reaction tank, add 100% bromic acid 202KG, 100% M acid 130KG, adjust PH=8-10 with soda ash to dissolve the material under stirring, and control the temperature 50-55°C, c%=20-30 in the solution.

[0035] (2) One-step condensation reaction: respectively add catalyst, 98% cuprous oxide, 98% electrolytic copper powder, 98% copper sulfate each 9KG respectively, and each interval is 10 minutes, temperature control 80~85 ℃, stirring reaction 8 hours, The reaction pH is 8-10, and the TCL plate confirms that it is qualified.

[0036] (3) Removal of purple insoluble matter: use a jacket to cool down, so that the temperature in (2) solution is controlled at 30-45°C, add it to a solid-liquid separator for separation and removal of purple insoluble waste residue, collect the filtrate, confirm that it is qualified with a TCL plate, and set aside . About 5KG of waste residue is used for engineering soil.

...

Embodiment 2

[0047]The dyestuff is prepared according to the process steps described in Example 1, the difference is that in Example 2, 31KG of Yuanming powder is added to obtain 100% dyestuff 325KG.

Embodiment 3

[0049] The dyestuff was prepared according to the process steps described in Example 1, the difference being that 319KG of 100% dyestuff obtained in Example 3 was added with 29KG of Yuanming powder.

[0050] Reactive Brilliant Blue 4R Consumption Quota Table for Preparation of Wool of the Present Invention

[0051] raw material name

Unit consumption, Kg / T

bromide

631.3

M acid

406.3

Soda ash

500.0

Cuprous chloride

28.1

Electrolytic copper powder

28.1

[0052] copper sulfate

28.1

2,3-Dibromopropionyl chloride

360.0

[0053] Reactive Brilliant Blue 4R Applied Performance Table for Preparing Wool of the present invention

[0054]

[0055] Reactive Brilliant Blue 4R Consumption Quota Table for Preparation of Wool by Prior Art Process

[0056] raw material name

Unit consumption, Kg / T

bromide

673.3

M acid

433.3

So...

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PUM

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Abstract

The invention provides a method for preparing wool reactive-dye brilliant blue 4R. The method comprises the steps of condensing bromamine acid with M acid under the action of a catalyst, removing purple insoluble substances, condensing with 2,3-dibromo propionyl chloride, performing alkali treatment, neutralizing and blending. The method is characterized by removing the purple insoluble substancesat a temperature between 30 and 45 DEG C, thereby reducing a refining link in the prior art, for example, changing three times of refining in the prior art into one time of refining. More preferably,the method changes the steps of salting-out, filter-pressing, baking, grinding and blending in the prior technical method into the steps of directly blending neutralized color paste solution and thenperforming spray-drying.

Description

Technical field: [0001] The invention relates to a preparation method of a reactive dye brilliant blue 4R suitable for dyeing wool, cashmere and shrink-proof wool. Background technique: [0002] Reactive dyes have the remarkable characteristics of bright color, excellent application performance, convenient use and strong applicability. In the 21st century, due to the economic factors of environmental and ecological constraints, the requirements for the production and preparation of reactive dyes, color uptake rate, color fixation rate and dyeing wastewater are getting higher and higher. Existing a kind of brilliant blue reactive dye, its structural formula is as shown in I: [0003] [0004] The dye industry calls it Brilliant Blue 4R. At present, reactive brilliant blue 4R dyes for wool are condensed with bromic acid and M acid under the action of a catalyst in the preparation process, after removing purple insoluble matter, and then refined three times, condensed with...

Claims

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Application Information

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IPC IPC(8): C09B62/467
Inventor 张兴华郭建荣
Owner TIANJIN DEK CHEM
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