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Direct blended carbuncle D-BLL dye preparation technique

A preparation process, D-BLL technology, applied in the direction of complex metal compounds of azo dyes, azo dyes, organic dyes, etc., can solve the problems of unfavorable environmental protection and energy saving, reduce production efficiency, prolong production cycle, etc., to achieve The effect of shortening the production cycle, improving production efficiency, and avoiding the production of by-products

Active Publication Date: 2009-01-28
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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  • Direct blended carbuncle D-BLL dye preparation technique
  • Direct blended carbuncle D-BLL dye preparation technique
  • Direct blended carbuncle D-BLL dye preparation technique

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Experimental program
Comparison scheme
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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 0.2mol 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 dissolve the diazonium salt obtained in step (1) Add it into the gray-black transparent solution at a temperature of 12-15°C, continuously adjust it with soda water to maintain a pH of 8-9, and react for 5 hours to the end to obtain a monoazo product solution.

[0040] (3), the first co...

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Abstract

The invention relates to a preparation process of a directly blended carbuncle D-BLL dye, comprising the steps of diazotization reaction, coupling reaction, a first condensation reaction, a second condensation reaction, a third condensation reaction, copper complex reaction and post treatment. The reaction conditions of the coupling reaction, the first condensation reaction and the second condensation reaction are optimized, thus saving the purification procedure and achieving the aim of improving production efficiency, saving energy and reducing exhaust.

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 Applications(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