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Disperse dye and preparation process thereof

A disperse dye and preparation technology, applied in the field of dyes, can solve problems such as contamination, achieve the effects of improving surface roughness, bright color, and improving color fastness

Inactive Publication Date: 2020-06-19
NINGBO MENGHENG LINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a disperse dye with higher color fastness, which can prevent the dye from contaminating other clothes during washing, and can also avoid problems affecting human health due to poor color fastness of the dye. question

Method used

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  • Disperse dye and preparation process thereof
  • Disperse dye and preparation process thereof
  • Disperse dye and preparation process thereof

Examples

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preparation example

[0044] Preparation of dye monomer: the general formula is The compound diazotization, and the diazonium salt of this compound is coupled to obtained from above, where R 1 is chlorine or bromine, R 2 is methyl or ethyl, R 3 is methyl or ethyl.

Embodiment 1

[0047] The invention discloses a preparation process of disperse dyes, comprising the following steps:

[0048] S1, first mix the silica sol and distilled water, and adjust the pH value to 4;

[0049] S2. Then add dye monomer, 6-bromo-2,4-dinitroaniline, dispersant and disperse blue 2BLN to obtain a preliminary mixture, stir and mix at 45°C, and then grind with a sand mill to obtain a dispersion dye. The content of each component is shown in Table 1 below.

Embodiment 2

[0051] The invention discloses a preparation process of disperse dyes, comprising the following steps:

[0052] S1, first mix the silica sol and distilled water, and adjust the pH value to 5;

[0053] S2. Then add dye monomer, 6-bromo-2,4-dinitroaniline, dispersant and disperse blue 2BLN to obtain a preliminary mixture, stir and mix at 50°C, and then grind with a sand mill to obtain a dispersion dye. The content of each component is shown in Table 1 below.

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Abstract

The invention relates to the technical field of dyes, and discloses a disperse dye, which comprises the following components by weight: 20-30 parts of a dye monomer, 10-12 parts of silica sol, 20-25 parts of distilled water, 3-5 parts of 6-bromo-2, 4-dinitroaniline, 2-4 parts of a dispersant, and 2-3 parts of disperse blue 2BLN. The disperse dye has the following advantages and effects: the disperse dye has relatively high color fastness due to the dye monomer taking an azo structure as a matrix; and the silica sol and the distilled water are mixed to impregnate the dye monomer, so that the surface roughness of the dye monomer can be improved, the hydrophobicity is realized, the purpose of improving the wettability of the disperse dye on a polyester fabric is achieved, the color fixing effect of the disperse dye is improved, and the color fastness of the disperse dye is effectively improved.

Description

technical field [0001] The invention relates to the technical field of dyes, in particular to a disperse dye and a preparation process thereof. Background technique [0002] Dyes refer to a class of organic compounds that can make other substances obtain bright and firm colors. Since the pigments used today are all artificially synthesized, they are also called synthetic dyes. Dyes and pigments are generally self-colored compounds that can make other substances obtain bright and firm colors in molecular or dispersed state. With the increasing demand and consumption of polyester fabrics, disperse dyes have become one of the most actively developed dyes in the world dye market. The fastness of polyester fabrics dyed with disperse dyes is an important indicator to consider its quality. [0003] At present, the patent with the publication number CN101775236A discloses a disperse dye, a low-temperature environment-friendly disperse dye, which consists of the following components...

Claims

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Application Information

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IPC IPC(8): C09B67/38C09B67/22
CPCC09B67/0033C09B67/008
Inventor 陆晓君田宗海石东风乐明军郭亮
Owner NINGBO MENGHENG LINE IND
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