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A kind of preparation technology of direct blending ruby ​​d-bll dye

A technology of D-BLL and preparation process, which is applied in the directions of complex metal compounds of azo dyes, azo dyes, organic dyes, etc. The effect of shortening production cycle, improving production efficiency and avoiding by-products

Active Publication Date: 2011-12-28
内蒙古美力坚科技化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the multi-step purification steps included in this process not only lengthen the production cycle and reduce production efficiency, but also generate a large amount of printing and dyeing wastewater, which is not conducive to environmental protection and energy saving

Method used

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  • A kind of preparation technology of direct blending ruby ​​d-bll dye
  • A kind of preparation technology of direct blending ruby ​​d-bll dye
  • A kind of preparation technology of direct blending ruby ​​d-bll dye

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Embodiment Construction

[0034] The specific embodiment of the present invention is described below:

[0035] According to the preparation technology of direct blending ruby ​​D-BLL dyestuff of the present invention is made up of following steps:

[0036] (1), diazotization reaction:

[0037] Mix 0.2mol 1-hydroxy-2-amino-4-benzenesulfonic acid with water and 0.5mol hydrochloric acid, add 0.2mol 30% sodium nitrite aqueous solution within 45 minutes at 10-15°C, and react for 1.5 hours to obtain diazonium salt.

[0038] (2), coupling reaction:

[0039] First, mix 0.2 mol of 2-amino-5-naphthol-7-sulfonic acid with water, adjust the pH to 8 with soda ash, and dissolve it into a gray-black transparent solution; then, slowly add the diazonium salt obtained in step (1) to the ash In the black transparent solution, the temperature is 12-15°C, continuously adjusted with soda water to maintain pH 8-9, and react for 5 hours to the end to obtain a monoazo product solution.

[0040] (3), the first condensation r...

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Abstract

The present invention relates to a kind of preparation technology of direct blending ruby ​​D-BLL dye, it comprises diazotization reaction, coupling reaction, first condensation reaction, second condensation reaction, third condensation reaction, copper complexation reaction and The composition of the post-processing steps, especially the optimization of the reaction conditions of the coupling reaction, the first condensation reaction and the second condensation reaction, so as to save the purification process and achieve the purpose of improving production efficiency, energy saving and emission reduction.

Description

technical field [0001] The invention relates to a preparation process of direct blending dyes, in particular to a preparation process of direct blending ruby ​​D-BLL. Background technique [0002] Directly blended ruby ​​D-BLL dye is a new type of dye that supports the "one-step-one-bath" dyeing process of polyester / cotton and polyester / viscose blended fibers, and the "one-step-one-bath" dyeing process of polyester / cotton and polyester / viscose blended fibers supported by it The dyeing process can greatly reduce the discharge of printing and dyeing wastewater, save energy consumption, and save working hours. It has the advantages of simple process, safety, money saving, and practical effect. In addition, it is one of the ternary colors of direct blended dyes, which can be dyed in a single color or blended with other direct blended dyes. It has a wide range of applications and a large amount of use. [0003] The structural formula of direct blended ruby ​​D-BLL dye is as foll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B45/34
Inventor 张正富诸金法仲连兴
Owner 内蒙古美力坚科技化工有限公司