Activated dye composition and preparation method thereof
A technology of dye composition and azo dye, which is applied in the direction of organic dyes, can solve the problems of high cost and unsatisfactory dye performance, and achieve the effects of good solubility, high color fastness and high color fixation rate
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Embodiment 1
[0031] 1) Preparation of general formula (2):
[0032] Take 1-amino-8-naphthol-3.6-disulfonic acid monosodium salt as the coupling component and p-β-hydroxyethyl sulfone sulfate aniline as the diazo component as an example.
[0033] a) Add water and β-hydroxyethyl sulfone sulfate aniline to the reactor, adjust the pH ≈ 5 with about 20% inorganic base under stirring, add hydrochloric acid and crushed ice, the temperature is 0 ° C ~ 10 ° C, add sub Sodium nitrate, stirred and reacted for 2 hours, controlled sufficient amount of hydrochloric acid and nitrous acid, and eliminated excess nitrous acid after the reaction.
[0034] b) Add 1-amino-8-naphthol-3.6-disulfonic acid monosodium salt powder (or beating with water, adjust the pH to ≈4.5 to dissolve) into the reaction solution in item a) to perform a coupling reaction.
[0035] c) After the primary coupling reaction reaches the end point, use about 20% inorganic base to adjust the pH to 5.5, carry out the secondary coupling re...
Embodiment 2
[0085] 1000kg of the dry powder material of the existing general formula (1), 2000kg of the material of the general formula (2), according to the weight ratio of special priority, respectively add 500kg of the material of the general formula (1) into the blending equipment; 2000kg of the material of the general formula (2) .
[0086] 1) After mixing evenly, weigh the mixed material with the same weight as the standard sample, and measure the absorbance at λ598.0nm and λ410.0nm according to the method of standard sample measurement, such as Figure 5 shown.
[0087] Figure 5 The absorbance curves of standard samples and blended samples are shown.
[0088] The black curve in the figure is the absorbance curve of the active black standard sample; the blue curve is the absorbance curve of the blended sample.
[0089] The absorption wavelength of the mixed sample is 598.0; the optical density value is 0.2759;
[0090] The absorption wavelength is 410.0; the optical den...
Embodiment 3
[0106] 1) 4000kg of the dry powder material of the existing general formula (2). Weigh about 2.5 grams and dilute to the scale with water in a volumetric flask, shake well, and measure the data with a spectrophotometer: the absorption wavelength is 598.0; the optical density value is 0.3106 ; The absorption wavelength is 410.0; the optical density value is 0.0999.
[0107] 2) The liquid material with general formula (1) is equivalent to 900kg of dry product. According to the weight ratio of special priority, add 1700kg of material with general formula (2) into the blending equipment, and after mixing evenly (depending on the dissolution of the material, add water appropriately) ). Take by weighing 9.0 grams of the mixed liquid material in a volumetric flask, dilute to the mark with water, shake well, and measure the data with a spectrophotometer: the absorption wavelength is 598.0; the optical density value is 0.2647; the absorption wavelength is 410.0; the optical density Th...
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