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Bright yellow reactive dye for fur and preparation thereof

A technology of reactive dyes and bright yellow, applied in the field of wool reactive dyes and their preparation, to achieve the effects of environmental protection promotion, high exhaustion rate and color fixation rate, and good light fastness performance

Inactive Publication Date: 2009-07-15
TIANJIN DEK CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acid dyes can no longer meet the development of the times

Method used

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  • Bright yellow reactive dye for fur and preparation thereof
  • Bright yellow reactive dye for fur and preparation thereof
  • Bright yellow reactive dye for fur and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Ingredients list:

[0037] Name of raw material Molecular weight Molecular ratio Amount in 100% (Kg) Feeding amount (kmol)

[0038] Potassium 2,4-diaminobenzenesulfonate 226 1 310.75 1.375

[0039] 2,3-Dichloropropionyl chloride 161.5 1.05 233.17 1.375

[0040] Potassium nitrite 85 1.02 119.2 1.375

[0041] Hydrochloric acid 36.5 2.5 125.47 1.375

[0042] Pyridone 196 0.98 264.11 1.375

[0043] 2. The dye preparation process of the present invention operates as follows:

[0044] a. Dissolution of potassium 2,4-diaminobenzene sulfonate

[0045] Put 2400 liters of bottom water into the reaction tank, add 310.75 kg of potassium 2,4-diaminobenzenesulfonate, heat up to 22°C, stir to dissolve, and make the materials completely dissolved and clear. Adjust pH=6~6.5 with dilute hydrochloric acid. The volume is 2825 liters, and the C% in the solution is 11 (referring to the mass percentage concentration, the same below).

[0046] b, condensation reaction

[0047] Use direct ice an...

Embodiment 2

[0069] 1. Ingredients list:

[0070] Name of raw material Molecular weight Molecular ratio Amount in 100% (Kg) Feeding amount (kmol)

[0071] Potassium 2,4-diaminobenzenesulfonate 226 1 310.75 1.375

[0072] 2,3-Dichloropropionyl chloride 161.5 1.05 233.17 1.375

[0073] Potassium nitrite 85 1.02 119.2 1.375

[0074] Hydrochloric acid 36.5 2.5 125.47 1.375

[0075] Pyridone 196 0.98 264.11 1.375

[0076] 2. The dye preparation process of the present invention operates as follows:

[0077] a. Dissolution of potassium 2,4-diaminobenzene sulfonate

[0078] Put 2400 liters of bottom water into the reaction tank, add 310.75 kg of potassium 2,4-diaminobenzenesulfonate, heat up to 22°C, stir to dissolve, and make the materials completely dissolved and clear. Adjust pH=6~6.5 with dilute hydrochloric acid. The volume is 2825 liters, and C% in the solution = 11 (referring to the mass percentage concentration, the same below).

[0079] b, condensation reaction

[0080] Use direct ice and jac...

Embodiment 3

[0096] 1. Ingredients list:

[0097] Name of raw material Molecular weight Molecular ratio Amount in 100% (Kg) Feeding amount (kmol)

[0098] P-phenylenediamine o-sulfonic acid 188 1 258.5 1.375

[0099] 2,3-Dichloropropionyl chloride 161.5 1.07 233.17 1.375

[0100] Potassium nitrite 85 1.02 119.2 1.375

[0101] Hydrochloric acid 36.5 2.5 125.47 1.375

[0102] Pyridone 196 0.98 264.11 1.375

[0103] 2. The dye preparation process of the present invention operates as follows:

[0104] a. Dissolution of p-phenylenediamine o-sulfonic acid

[0105] Put 2400 liters of bottom water into the reaction tank, add 258.5 kg of p-phenylenediamine o-sulfonic acid, heat up to 35°C, adjust pH to 7.5-8 with potassium carbonate and stir to dissolve, so that the materials are completely dissolved and clarified. The volume is 2825 liters, and the C% in the solution is 11 (referring to the mass percentage concentration, the same below).

[0106] b, condensation reaction

[0107] Use direct ice and ja...

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PUM

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Abstract

The invention discloses a bright yellow reactive dye used for fur and a preparation method thereof. 2, 4-diaminobenzene sulfonic acid potassium, 2, 3-dichloro propionyl chloride and 3-formamido group-4-methyl-6-hydroxide radical-N-ethide pyridine are taken as main raw materials. The reactive dye of the invention is prepared by condensation, diazotization, coincidence, hydrolyzation, refining, chromatic light adjustment, intensity adjustment, drying and packaging. The bright yellow reactive dye used for fur in the invention has relatively high responsiveness, good solubility and bright-colored and beautiful chromatic light; in addition, the light fastness property is relatively good and the exhaustion rate and the color fixing rate are very high. A spraying method adopting the pre-blending technology is applied in the invention. Therefore, dust is not generated, greatly contributing to environmental protection.

Description

Technical field [0001] The invention relates to a reactive dye for wool and a preparation method thereof, in particular to a bright yellow reactive dye for wool and a preparation method thereof. Background technique [0002] Now generally dyeing wool and cashmere, the dyes used are acid dyes, acid mordant dyes and metal complex dyes. Because the materials dyed with these kinds of dyes have poor fastness, the shade is not very bright, and it will cause problems for environmental protection. In the 21st century, due to environmental and ecological constraints, the requirements for coloring rate, fixing rate and dyeing wastewater are getting higher and higher. Acid dyes can no longer meet the development of the times. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a bright yellow reactive dye for wool that can reduce environmental pollution, requires low raw material cost, high product solubility, bright color, excellent ...

Claims

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Application Information

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IPC IPC(8): C09B62/473C09B62/51D06P3/10
Inventor 张兴华苏长湘
Owner TIANJIN DEK CHEM
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