Composite active dye
A reactive dye and dye technology, used in organic dyes, dyeing methods, textiles and papermaking, etc., can solve the problems of lifting force, dye depth and fastness properties that cannot fully meet the needs, and achieve good color fixing ability and high response. Active, colorful effects
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Embodiment 1
[0023] The synthesis of formula (I-1) dyestuff
[0024] In 61.1 parts of 7-(4-amino-2-ureido-phenyldiazo)naphthalene-1,3,6-trisulfonate and 400 parts of ice / water mixture, add 18.8 parts of cyanuric chloride to beat 2 hours, the temperature is controlled at 0-10°C, the pH is less than 3, and the generated hydrochloric acid is neutralized by adding baking soda. Add dropwise a solution of 18.8 parts of dissolved 2,4-diaminobenzenesulfonic acid and 150 parts of water to the above reaction solution, control the pH to 5-7.5, heat up the resulting solution to 32°C, keep stirring for 1.5 hours, and use TLC chromatography The method is used to measure the end point, and after the end point is reached, the temperature of the generated solution, that is, the coupling component, is lowered to 15°C for later use. 30.3 parts of para-ester, that is, p-(β-sulfate ethyl sulfone) aniline is diazotized in 150 parts of ice water according to the conventional way, and the diazonium salt solution...
Embodiment 2
[0027] The synthesis of formula (II-1) dyestuff
[0028] Put 18.9 parts of cyanuric chloride in 122 parts of ice water for beating for 1 hour, add dropwise the solution of 30.3 parts of para-ester and 145 parts of ice water within 0.5 hours, stir and react for 3 hours, and control the temperature at 1-10°C , the pH value is 1-4, and the primary condensation liquid is obtained. Slowly add 26.1 parts of J acid to the above-mentioned shrinkage solution, control the pH value to about 4.5, and the temperature is 5-40°C, stir and react for 2.5 hours to prepare the second shrinkage solution.
[0029] 34.7 parts of sodium 2-naphthylamine-1,5-disulfonate were stirred and beaten in 315 parts of ice water for 1 hour, and diazotization was carried out according to the conventional method. Add the above-mentioned dicondensate below 20°C to the diazonium salt, control the pH to 6-7.5, carry out the coupling reaction under stirring for 4 hours, then raise the temperature to about 30°C and k...
Embodiment 3
[0032] After blending 86g of dye A of formula (I-1), 14g of dye B of formula (II-1), and 8g of anthracite powder with water, grind and disperse with a grinder, and spray dry to obtain the composite activity of the present invention. Finished dye.
[0033]
PUM
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