A kind of blue azo dye and its preparation method and application
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A kind of technology of azo dyes and blue color, which is applied in the field of dyes, can solve the problems affecting the dyeing fastness of dyes to fabrics and poor washing fastness, and achieve excellent washing fastness, low cost and good dyeing performance
Active Publication Date: 2019-06-21
HANGZHOU FLARIANT SPECIALTY
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Problems solved by technology
Azo dyes have a variety of colors, such as red, yellow, green, blue, etc., but the existing blue azo dyes have problems such as poor washing fastness, and are easily migrated from the interior of fabric fibers under high temperature conditions. Seriously affect the color fastness of dyes to fabrics
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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
[0035] A kind of blue azo dye of the present embodiment, structural formula is as follows:
[0036]
[0037] where R 1 means OCH 3 ;
[0038] R 2 represents ethylene;
[0039] R 3 Indicates ethyl.
[0040] The preparation method of this blue azo dye is as follows:
[0041] (1) Take chloroacetic acid, HO(CH 2 ) n O(CH 2 ) m CH 3 , reflux dehydration in a toluene system at 100-150 degrees Celsius for esterification to obtain ester reactants;
[0042] Wherein, the value of n is 1, and the value of m is 1;
[0043] (2)
[0044]
[0045] Get the general formula (II) and the ester reactant to react under the effect of sodium carbonate at 100-150 degrees centigrade. After the reaction is completed, the excess ester reactant is evaporated, and the oil layer is removed by adding water, and the oil layer is dissolved by adding glacial acetic acid, namely get coupling components;
[0046] Wherein, in the general formula (II), the possible value of k is 0;
[0047] (...
Embodiment 2
[0051] A kind of blue azo dye of the present embodiment, structural formula is as follows:
[0052]
[0053] where R 1 means OC 2 h 5 ;
[0054] R 2 represents ethylene;
[0055] R 3 Indicates methyl.
[0056] The preparation method of the blue azo dye refers to Example 1. In this example, the value of n is 2, the value of m is 0, and the value of k is 1.
Embodiment 3
[0058] A kind of blue azo dye of the present embodiment, structural formula is as follows:
[0059]
[0060] where R 1 means OCH 3 ;
[0061] R 2 represents butylene;
[0062] R 3 Indicates ethyl.
[0063] The preparation method of the blue azo dye refers to Example 1. In this example, the value of n is 4, the value of m is 1, and the value of k is 1.
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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Abstract
The invention discloses a blue azo dye as well as a preparation method and application thereof. A structural formula of the blue azo dye is shown as a formula (I). The invention further discloses application of the blue azo dye in dyeing or printing of polyester fibers. The blue azo dye is selected from at least one compound in the structural general formula (I) and a dispersed dye composition is obtained by mixing; the dispersed dye composition can be applied to the dyeing or printing of the polyester fibers. When the blue azo dye disclosed by the invention is used for dyeing, fastness to washing, fastness to rubbing, fastness to perspiration, color fastness to sunlight and dyeing degree of the blue azo dye are excellent; the dispersed dye composition disclosed by the invention has the advantages of high staining intensity, bright color, good dyeing performance, excellent washing fastness, stable color and luster, low possibility of fading and lower cost.
Description
technical field [0001] The invention belongs to the technical field of dyes, and in particular relates to a blue azo dye and a preparation method and application thereof. Background technique [0002] After entering the 21st century, the competition in the world's textile market has become increasingly fierce. Southeast Asia's economy has become synonymous with low cost and high growth, and the textile industry business in Europe and the United States has also accelerated its transfer to Asia. In order to adapt to the situation of fierce competition in the textile market, it has become the common goal of textile enterprises to continuously reduce the production cost of textiles, continuously improve product quality, and continuously reduce environmental loads. [0003] Disperse dyes have very low solubility in water, very fine particles, and are dispersed in the dye solution. They are non-ionic dyes and are mainly used for polyester dyeing with high color fastness. [0004]...
Claims
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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Application Information
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