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Method and device for preparing disperse dyes and disperse dyes obtained therefrom

A technology of disperse dyes and disperse yellow, applied in the direction of organic dyes, etc., can solve the problems of harsh technical bottlenecks, and achieve the effect of reducing raw material consumption, saving production costs, and high conversion rate

Active Publication Date: 2015-09-02
ZHEJIANG HUADEE DYESTUFF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical bottleneck faced by enterprises if they produce according to the traditional process is becoming more and more demanding

Method used

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  • Method and device for preparing disperse dyes and disperse dyes obtained therefrom
  • Method and device for preparing disperse dyes and disperse dyes obtained therefrom
  • Method and device for preparing disperse dyes and disperse dyes obtained therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: utilize method of the present invention to prepare disperse yellow C-4G

[0038] 1.1 The process flow of the preparation of disperse yellow C-4G and the location of the main stains before the technical transformation

[0039] In the following table, before the technological transformation, the preparation of the disperse yellow C-4G (comparative example 1) and the technical transformation using the traditional process to produce the disperse yellow C-4G (embodiment 1) using the method of the present invention Process flow and location diagram of main stains, the number unit in the diagram is Kg / batch.

[0040] figure 2 Prepare dispersion yellow C-4G process flow chart before technological transformation, comparative example 1 such as figure 2 shown.

[0041] Improved embodiment 1: image 3 It is the process flow chart of preparing Disperse Yellow C-4G after technological transformation.

[0042] 1.2. Main production equipment used in the process of ...

Embodiment 2

[0072] Embodiment 2: Utilize the method of the present invention to prepare disperse yellow SE-4GL

[0073] 2.1 The process flow of the preparation of disperse yellow SE-4G and the location of the main stains before the technical transformation

[0074] Figure 4 Process flow chart for preparing disperse yellow SE-4G before technical transformation, comparative example 1 as Figure 4 shown

[0075] Example 2

[0076] The technical process of preparing disperse yellow SE-4G after technical transformation is as follows: Figure 5 shown

[0077] 2.2 The main production equipment used in the process of preparing Disperse Yellow SE-4GL

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Abstract

The invention relates to a method and a device for preparing a disperse dye. The method also comprises the following steps: during diazo-reaction and coupling reaction, carrying out a reaction liquid cooling step by virtue of a condensing method additionally; during filter pressing, carrying out a filter pressing step in a sealing manner; during washing, carrying out a cooling step by virtue of circulating water. The invention also provides an improved device suitable for the method. The improved device mainly comprises condensing devices arranged above a diazo-reaction device and a coupling reaction device, a first sealing type filter pressing device, a second sealing type filter pressing device, and a water circulating device, wherein water is circulated and washed in a closed environment. According to the method and the device during the process of preparing the disperse dye, the raw material consumption is reduced, the production cost is reduced, and the discharges of waste gas, waste residue and waste water are reduced; moreover, the technology is simple, convenient to operate, suitable for popularization and application, and obvious in economic benefits and social benefits.

Description

technical field [0001] The present invention relates to the fields of dye chemistry, dye manufacturing process and dye manufacturing machinery, more specifically, the present invention relates to a preparation method of disperse dye, the device used and the obtained disperse dye. Background technique [0002] Disperse dyes are a class of non-ionic dyes with low water solubility. It was first used in the dyeing of acetate fiber. With the development of textile industry and petrochemical industry, more and more synthetic fibers, such as acrylic fiber, polyester fiber, cotton fiber, nylon fiber, etc., have appeared one after another. Some chemical synthetic fibers have the characteristics of relatively dense spatial arrangement, less space gaps, high degree of alignment, and strong hydrophobicity. The fibers must be puffed under carrier or high temperature conditions to allow dyes to enter the fibers and be dyed. Therefore, strict requirements are placed on the chemical compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/38
Inventor 顾敏伟
Owner ZHEJIANG HUADEE DYESTUFF CHEM