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Semi-finished product of deep red dye, preparation method and application thereof

A dark red, semi-finished product technology, applied in the field of preparation, dark red dye semi-finished products, can solve the problems of harsh synthesis process, affecting large-scale use, etc., to achieve the effect of improving uniformity, fixing rate and dye depth.

Inactive Publication Date: 2015-04-01
吴江桃源染料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many reports on red azo dyes in existing patents. For example, the Chinese invention patent with application number 201010175509.1 discloses a disazo reactive dye, which can form purple, red and red dyes according to different synthetic materials. , navy blue and other colors; however, it is not difficult to find in the patent specification that its synthesis process is relatively strict, requiring the use of conditions such as high pressure, nitrogen or hydrogen protection, and 90-100°C, which seriously affects the possibility of its large-scale use

Method used

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Examples

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preparation example Construction

[0020] The preparation method of above-mentioned crimson dye semi-finished product, it comprises the following steps:

[0021] (a) will Dissolve in water, adjust the pH value to 5~5.5, and the temperature is 15~25°C to obtain the first solution; dilute it and adjust the pH to reduce the intensity of its reaction, thereby inhibiting the progress of side reactions;

[0022] (b) Add water, cyanuric chloride, anionic surfactant, and hydrochloric acid to the reaction vessel and stir evenly, then add the first solution to it, react at 0-8°C for 1-3 hours, and then adjust its pH value to 3~3.5, react at 8~12°C for 2~4 hours to obtain the second solution; The mol ratio with described cyanuric chloride is 1:1~1.05, and the mass ratio of described anionic surfactant, described hydrochloric acid and described cyanuric chloride is 1~1.5:3~5:300~400; Now the temperature is raised for a period of time after the reaction at low temperature for a period of time, mainly for the progress of...

Embodiment 1

[0031] Present embodiment provides a kind of crimson dye semi-finished product, and its chemical structural formula is as follows:

[0032] .

[0033] The preparation method of this crimson dye semi-finished product, it comprises the following steps:

[0034] (a) will Dissolve in water, adjust the pH to 5, and the temperature to 15°C to obtain the first solution;

[0035] (b) Add water, cyanuric chloride, anionic surfactant, and hydrochloric acid to the reaction vessel and stir evenly, adjust the pH to 2 with baking soda, add a small amount of defoamer dropwise to eliminate foam, stir evenly, and add the The first solution was reacted at 0°C for 3 hours, then its pH value was adjusted to 3, and reacted at 8°C for 4 hours to obtain the second solution; The mol ratio with cyanuric chloride is 1:1, and the mass ratio of anionic surfactant, hydrochloric acid and cyanuric chloride is 1:3:300;

[0036] (c) adding to said second solution , heating up to 40°C and adjusting t...

Embodiment 2

[0040] The present embodiment provides a kind of preparation method of deep red dye semi-finished product in embodiment 1, comprises the following steps:

[0041] (a) will Dissolve in water, adjust the pH value to 5.5, and the temperature is 25°C to obtain the first solution;

[0042] (b) Add water, cyanuric chloride, anionic surfactant, and hydrochloric acid into the reaction vessel and stir evenly, then add the first solution into it, react at 8°C for 1 hour, and then adjust its pH value to 3.5, React at 12°C for 2 hours to obtain the second solution; The mol ratio with cyanuric chloride is 1: 1.05, and the mass ratio of anionic surfactant, hydrochloric acid and cyanuric chloride is 1.5: 5:400;

[0043] (c) Add to the second solution , raise the temperature to 45°C and adjust the pH value to 3.5 to react for 2 hours, then cool down to 15°C to obtain the third solution; The molar ratio with cyanuric chloride is 1:1;

[0044] (d) Add water and an equimolar amount of ...

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Abstract

The invention relates to a semi-finished product of deep red dye, a preparation method and an application thereof. The chemical structural formula (I) of the semi-finished product of deep red dye is shown as formula (I) which is as shown in the specification. By introducing two naphthalene rings into the structure, a conjugate large Pi structure is formed by azo group, melamine group, amino group and phenyl group, so that uniformity coefficient of density dispersion of electronic cloud is improved, and thus the color fixation rate and the deep dyeing property of the deep red dye can be improved.

Description

technical field [0001] The invention belongs to the field of organic dyes and relates to a crimson dye semi-finished product, in particular to a crimson dye semi-finished product, a preparation method and an application thereof. Background technique [0002] Reactive dyes, also known as reactive dyes, are a class of dyes that chemically react with fibers during dyeing. Such dye molecules contain groups that can chemically react with fibers. When dyeing, the dyes react with the fibers and form covalent bonds between them to form a whole, which improves the fastness to washing and rubbing. [0003] There are many reports on red azo dyes in existing patents. For example, the Chinese invention patent with application number 201010175509.1 discloses a disazo reactive dye, which can form purple, red and red dyes according to different synthetic materials. , navy blue and other colors; however, it is not difficult to find in the patent specification that its synthesis process is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/51C09B67/22C09B67/24
Inventor 薛伟陆海英张惠民
Owner 吴江桃源染料有限公司
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