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Method for preparing active dye for blue wool

A reactive dye for wool, blue technology, applied in the field of dyes, can solve the problems of affecting the reaction effect and repeatability, low efficiency of copper catalyst utilization, not conforming to green chemistry, etc., achieves bright and beautiful color light, and the preparation process is simple and easy. row, effect of high fiber-dye bond stability

Inactive Publication Date: 2014-12-10
HUBEI HUALI DYESTUFF INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The Chinese patent application number 200810154107.6 discloses a dye with the following structure, which can meet the needs of wool dyeing in terms of performance, but there are still problems such as insufficient activity and insufficient color, and a large amount of acidic dyes will be generated during its preparation. Copper-containing wastewater, and the utilization efficiency of these copper catalysts is relatively low, which does not meet the requirements of green chemistry; and the reaction involves high temperature operation, when using a higher reaction temperature operation, it will affect the reaction effect and repeatability; and the raw materials used in the middle High cost and not suitable for industrial production

Method used

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  • Method for preparing active dye for blue wool
  • Method for preparing active dye for blue wool
  • Method for preparing active dye for blue wool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 prepares blue reactive dye 1, operates according to the following steps:

[0046] a, a condensation reaction:

[0047] ①Put 1500L of bottom water into the primary condensation reaction pot, raise the temperature to 80°C, and put in 100kg of bromic acid to dissolve it;

[0048] ②Add 60kg of sodium carbonate and 16.5kg of sodium sulfite and stir for 1 hour to dissolve completely;

[0049] ③Put in 35kg of powdered p-phenylenediamine, stir and react for 1 hour, then add 5kg of cuprous chloride in two equal parts, maintain the temperature at 35-36°C, and react for 5 hours until the raw materials disappear. This reaction must be well stirred, and no reactants are allowed to sink to the bottom of the reactor during the reaction, otherwise the reaction will be incomplete. Finally, TLC chromatographic monitoring was performed to confirm the disappearance of the raw materials to terminate the reaction.

[0050] b. Acid refining:

[0051] ①Put 1500L of bottom wate...

Embodiment 2

[0062] Embodiment 2 Prepare blue reactive dye 2, operate according to the following steps:

[0063] a, a condensation reaction:

[0064] ①Put 2500L of bottom water into the primary condensation reaction pot, raise the temperature to 80°C, and put in 200kg of bromic acid to dissolve it;

[0065] ②Add 130kg of sodium carbonate and 33kg of sodium sulfite and stir for 1 hour to dissolve completely;

[0066] ③Put in 80kg of powdered m-phenylenediamine, stir for half an hour, then add 8kg of cuprous iodide in two equal parts, keep the temperature at 35-38°C, and react for 5 hours until the raw materials disappear. During the reaction, no reactants were allowed to settle at the bottom of the reactor, and finally TLC was performed to confirm the end point.

[0067] b. Acid refining:

[0068] ①Put 3000L of bottom water in the refining pot, add 50kg of sodium sulfite, stir for 3 hours to completely dissolve it, and then cool down to 9-10°C.

[0069] ②The primary condensation reactan...

Embodiment 3

[0079] Embodiment 3 Prepare blue reactive dye 1, operate according to the following steps:

[0080] a, a condensation reaction:

[0081] ①Put 1500L of bottom water into the primary condensation reaction pot, raise the temperature to 70°C, and put 100kg of bromic acid to dissolve it;

[0082] ②Add 60kg of sodium carbonate and 16.5kg of sodium sulfite and stir for 1 hour to dissolve completely;

[0083] ③Put in 35kg of powdered p-phenylenediamine, stir and react for 1 hour, then add 5kg of cuprous chloride in two equal parts, maintain the temperature at 35-36°C, and react for 5 hours until the raw materials disappear. This reaction must be well stirred, and no reactants are allowed to sink to the bottom of the reactor during the reaction, otherwise the reaction will be incomplete. Finally, TLC monitoring was performed to confirm that the raw materials disappeared and the reaction was terminated.

[0084] b. Acid refining:

[0085] ①Put 1500L of bottom water in the refining p...

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Abstract

The invention discloses a method for preparing active dye for blue wool. The preparation method comprises the following steps of: performing first condensation reaction on bromamine acid which serves as a raw material and phenylene diamine, and performing acid refining, sulfonation, second condensation reaction and aftertreatment to obtain the active dye. The method is advanced and low in cost and causes light pollution to the environment. The dye prepared by the method has bromo-acrylamide groups, and under a slightly acidic condition, by being used together with Sibagol B, the active dye has a high reactivity with wool and a high fixation rate and meets the 'machine washable' high fastness requirement of International Wool Secretariat, so the active dye is quite high in market competitiveness.

Description

technical field [0001] The invention relates to the field of dyes, in particular to a reactive dye for blue wool and its preparation method and application. Background technique [0002] In recent years, while people continue to pursue high-quality and healthy life, today's dyestuff market is facing great challenges. Now the dyes generally used for dyeing wool and cashmere are acid dyes, acid mordant dyes and metal complex dyes; because the materials dyed with these types of dyes have poor fastness, the shade is not very bright, and it will bring harm to the environment. pollute. In the 21st century, due to the constraints of the ecological environment, the requirements for color uptake rate, color fixation rate and dyeing wastewater are getting higher and higher. Traditional dyes can no longer meet the development of the times. Environmentally friendly dyes have become the basic requirements for dyes in the world textile market. Requirements, as far as dyeing is concerned...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/467D06P1/384D06P3/14
Inventor 艾良军崔孟元熊建平何向华朱训杰
Owner HUBEI HUALI DYESTUFF INDAL
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