Reactive brilliant blue dye and preparation method thereof
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A technology of reactive brilliant blue and dye, applied in the field of reactive brilliant blue dye and its preparation, can solve the problems of dull shade, poor fastness, environmental pollution and the like
Inactive Publication Date: 2015-02-11
中国中化股份有限公司 +1
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Fabrics dyed with these types of dyes have poor fastness, poor shade, and pollute the environment
After entering the 21st century, due to the constraints of the ecological environment, the requirements for the dyeing rate, color fixation rate, color fastness performance and dyeing wastewater of dyes are getting higher and higher. The above dyes can no longer meet the needs of the development of the times, affecting the polyamide fiber development
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0072] Prepare the following dyes:
[0073]
[0074] a, One condensation reaction of cyanuric chloride and p-beta-hydroxyethylsulfone aniline sulfate
[0075] Add 1.85 parts of cyanuric chloride and 10 parts of water into a three-necked reaction bottle, and stir and beat for 20 minutes in an ice-water bath. In addition, 2.81 parts of p-β-hydroxyethylsulfone aniline sulfate was weighed, mixed with 10 parts of water, dissolved with alkali, and then added to the cyanuric chloride solution. The reaction temperature is 0-15°C, the pH is between 3-6, and the reaction is followed by HPLC until the p-β-hydroxyethylsulfone aniline sulfate disappears, and a condensate solution is obtained, which is set aside.
[0076] b, the synthesis of compound E
[0077]
[0078] Add 3.4 parts of sodium bicarbonate, 2 parts of sodium carbonate and 40 parts of water into the three-necked reaction flask, and stir to dissolve. After completely dissolving, add 8.08 parts of bromonic acid, 4.36 p...
Embodiment 2-14
[0085] With the method described in similar embodiment 1, select following corresponding raw material for use, can obtain the dyestuff shown below:
[0086]
[0087]
[0088]
[0089]
Embodiment 15
[0091] Prepare the following dyes:
[0092]
[0093] Adjust the pH of the dicondensation solution obtained in Example 1 to 10 with sodium hydroxide, and keep the temperature at 40-50°C for reaction, and follow the reaction with HPLC until the dicondensate disappears. Adjust the pH to 7.0 with 30% hydrochloric acid solution, cool down to 10°C in ice water, collect the filter cake by filtration, and dry to obtain 8.5 parts of the reactive dye Brilliant Blue product of the above-mentioned dye (15).
[0094] Dyeing the above-mentioned dye (15) on polyamide fibers yields a bright blue color with a color absorption rate of 98.8% and a color fixation rate of 97.3%.
[0095] The synthesized dye (15) compound was subjected to high-resolution mass spectrometry, the calculated dye molecular weight M=768.02, and the measured dye molecular weight M=767.95. The calculated value is [M-1] / 1=767.02, and the measured value is 766.95; the calculated value is [M-2] / 2=383.01, and the measured ...
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Abstract
The invention belongs to the field of fine chemical engineering, and particularly relates to a reactive brilliant blue dye and a preparation method thereof. The structure of the reactive brilliant blue dye is a compound as shown in a general formula (I) in the specification, wherein each group in the formula is defined in the specification. The preparation method comprises the following steps: firstly, enabling cyanuric chloride (or cyanuric fluoride) to react with a compound with a vinyl sulfone sulfate or chloroethyl sulfone group to obtain a first condensation compound; enabling the first condensation compound to react with a compound shown in a general formula (II) in the specification to obtain a second condensation compound, namely a part of reactive brilliant blue dye containing a vinyl sulfone sulfate or chloroethyl sulfone group as shown in the general formula (I); and hydrolyzing the second condensation compound under an alkaline condition to obtain another part of reactive brilliant blue dye containing a vinyl sulfone group in the general formula (I). The preparation method disclosed by the invention is low in cost, low in energy consumption, low in pollution and suitable for industrial large-scale production; the reactive brilliant blue dye is used for dyeing and printing of protein fibers, synthetic fibers, cellulosic fibers and blended fabrics thereof; and the fabric is bright and gorgeous in color after being dyed.
Description
technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a reactive brilliant blue dye and a preparation method thereof. Background technique [0002] Polyamide fiber (commonly known as nylon) is the third largest textile fiber after polyester and cotton fiber, and is also the second largest variety of synthetic fiber, accounting for 22% to 30% of synthetic fiber. Generally, the dyes used for dyeing polyamide fibers are mainly disperse dyes, acid dyes and metal complex dyes. The fabrics dyed with these types of dyes have poor fastness, poor shade, and pollute the environment. After entering the 21st century, due to the constraints of the ecological environment, the requirements for the dyeing rate, color fixation rate, color fastness performance and dyeing wastewater of dyes are getting higher and higher. The above dyes can no longer meet the needs of the development of the times, affecting the polyamide Fiber development. ...
Claims
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