Composite liquid reactive red dye

Abstract

The invention discloses composite liquid reactive red dye which consists of the following components in parts by weight: 60-85 parts of a dye monomer A as shown in formula (I), 5-30 parts of a dye monomer B as shown in formula (2), and 1-5 parts of urea, 1-5 parts of caprolactam and 1-5 parts of sodium tripolyphosphate as additives, wherein the sulfonic acid groups in the formula (2) are in meta-positions and para-positions of amino, and the ratio of meta-positions to para-positions is (1:2)-(2:1). According to the composite liquid reactive red dye, monochlorotriazine active dye and improved buffer aids with low reactivity are selected and compounded with aids, the effect of stabilizing dissolution assistance is achieved, the defect that in the prior art the prepared liquid dye is poor in chemical stability is overcome, the liquid dye is prevented from agglomeration or separation in the storage process, and the requirements of the printing and dyeing industry are met.

Description

technical field

[0001] The invention relates to a reactive printing dye, in particular to a liquid reactive composite red dye, which is suitable for printing cotton, linen, viscose fiber, etc., and is suitable for use in automatic pulping equipment systems. Background technique

[0002] At present, powdered reactive red K-2BP and red P-B are generally selected as the red component of reactive printing in the market, but a large amount of fillers and dustproofing agents are added during the commercialization of dyes, which greatly reduces the solubility of dyes, and can be used in dark printing. Due to the solubility and other problems, the dark dye cannot be fully dissolved. The liquid composite reactive red dye is adjusted to the color between the bright red and the nine red through the reasonable ratio of the dye compound components to make the color more pure. It is suitable for single-color products and combined with reactive Golden yellow P-2RN and reactive blue P-3R ha...

Examples

preparation example Construction

[0042]The preparation method of monomer A: 102 parts of cyanuric chloride and 3 parts of dispersant are beaten to powder in the presence of crushed ice, and 100 parts of 15% (mass concentration) sodium p-aminobenzenesulfonate solution is added for one condensation. Control pH=5-6, temperature 3-5°C; when the free amino group value is less than 1%, add 100 parts of dry product H acid, control temperature 30-35°C, pH=4-4.5, after the reaction is over, add ice and cool down to Around 25°C; Finally, carry out coupling reaction with 100 parts of diazonium salt of 1,5-disulfonic acid naphthylamine to obtain dye monomer A solution.

[0043] The preparation method of monomer B: 102 parts of cyanuric chloride and 3 parts of dispersing agent are beaten to powder in the presence of crushed ice, and 100 parts of 15% (mass concentration) H acid solution is added for condensation once, and the temperature is 6- 8°C, pH = 2-2.5, the liquid phase controls the primary condensation product puri...

Embodiment 1-13

[0046] 60-80 parts of standard liquid dye monomer A as shown in formula (1); 10-30 parts of standard liquid dye monomer B as shown in formula (2) (in each of the following examples, monomer B mediosite and The para position determines the highest solubility index by adjusting different ratios, wherein the ratio of the para position and the meta position of monomer B in Examples 1 to 6 is 0.5:1; the para position and meta position of monomer B in Examples 7 to 9 The ratio of monomer B is 1.5:1; the ratio of para-position and meta-position of monomer B in Examples 9-13 is 2:1), select dye monomer A and dye monomer B to add additives at a ratio of 5:1 : 1-3 parts of urea, 1-3 parts of caprolactam, 1-3 parts of sodium tripolyphosphate, appropriate amount (generally 0.3%) of bactericidal preservative, prepared into liquid dye, the formula is shown in Table 1.

[0047] Table 1

[0048]

[0049] The reactive dyes prepared in the above examples are dyed with standard reactive dyes...

technical field

[0001] The invention relates to a reactive printing dye, in particular to a liquid reactive composite red dye, which is suitable for printing cotton, linen, viscose fiber, etc., and is suitable for use in automatic pulping equipment systems. Background technique

[0002] At present, powdered reactive red K-2BP and red P-B are generally selected as the red component of reactive printing in the market, but a large amount of fillers and dustproofing agents are added during the commercialization of dyes, which greatly reduces the solubility of dyes, and can be used in dark printing. Due to the solubility and other problems, the dark dye cannot be fully dissolved. The liquid composite reactive red dye is adjusted to the color between the bright red and the nine red through the reasonable ratio of the dye compound components to make the color more pure. It is suitable for single-color products and combined with reactive Golden yellow P-2RN and reactive blue P-3R ha...

Examples

preparation example Construction

[0042]The preparation method of monomer A: 102 parts of cyanuric chloride and 3 parts of dispersant are beaten to powder in the presence of crushed ice, and 100 parts of 15% (mass concentration) sodium p-aminobenzenesulfonate solution is added for one condensation. Control pH=5-6, temperature 3-5°C; when the free amino group value is less than 1%, add 100 parts of dry product H acid, control temperature 30-35°C, pH=4-4.5, after the reaction is over, add ice and cool down to Around 25°C; Finally, carry out coupling reaction with 100 parts of diazonium salt of 1,5-disulfonic acid naphthylamine to obtain dye monomer A solution.

[0043] The preparation method of monomer B: 102 parts of cyanuric chloride and 3 parts of dispersing agent are beaten to powder in the presence of crushed ice, and 100 parts of 15% (mass concentration) H acid solution is added for condensation once, and the temperature is 6- 8°C, pH = 2-2.5, the liquid phase controls the primary condensation product puri...

Embodiment 1-13

[0046] 60-80 parts of standard liquid dye monomer A as shown in formula (1); 10-30 parts of standard liquid dye monomer B as shown in formula (2) (in each of the following examples, monomer B mediosite and The para position determines the highest solubility index by adjusting different ratios, wherein the ratio of the para position and the meta position of monomer B in Examples 1 to 6 is 0.5:1; the para position and meta position of monomer B in Examples 7 to 9 The ratio of monomer B is 1.5:1; the ratio of para-position and meta-position of monomer B in Examples 9-13 is 2:1), select dye monomer A and dye monomer B to add additives at a ratio of 5:1 : 1-3 parts of urea, 1-3 parts of caprolactam, 1-3 parts of sodium tripolyphosphate, appropriate amount (generally 0.3%) of bactericidal preservative, prepared into liquid dye, the formula is shown in Table 1.

[0047] Table 1

[0048]

[0049] The reactive dyes prepared in the above examples are dyed with standard reactive dyes...

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