Red reactive dye for fur and preparation thereof

A reactive dye and red technology, applied in the field of wool reactive dye and its preparation, to achieve the effect of eliminating the generation of waste water and waste residue, excellent solubility, bright and beautiful color light

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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  • Red reactive dye for fur and preparation thereof
  • Red reactive dye for fur and preparation thereof
  • Red reactive dye for fur and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Ingredients list:

[0033] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0034] Sodium 2,4-diaminobenzenesulfonate 210 1 288.75 1.375

[0035] 2,3-Dichloropropionyl chloride 161.5 1.05 233.2 1.375

[0036] Sodium nitrite 69 1.02 96.77 1.375

[0037] Hydrochloric acid 36.5 2.5 125.47 1.375

[0038] 1-Naphthol-5-sulfonic acid 246 0.98 331.49 1.375

[0039] 2, dyestuff preparation technology of the present invention operates as follows:

[0040] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0041] Put 2400 liters of bottom water in the reaction tank, add 288.75 kg of sodium 2,4-diaminobenzenesulfonate, heat up to 22°C, stir and dissolve, so that the materials are completely dissolved and clarified. Adjust the pH to 6-6.5 with dilute hydrochloric acid. The volume is 2625 liters, and C%=11 in the solution (referring to mass percent concentration, the same below).

[0042] b. Condensation reaction

[0043] Use ...

Embodiment 2

[0068] 1. Ingredients list:

[0069] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0070] Sodium 2,4-diaminobenzenesulfonate 210 1 288.75 1.375

[0071] 2,3-Dichloropropionyl chloride 161.5 1.05 233.2 1.375

[0072] Sodium nitrite 69 1.02 96.77 1.375

[0073] Hydrochloric acid 36.5 2.5 125.47 1.375

[0074] 1-Naphthol-5-sulfonic acid 246 0.98 331.49 1.375

[0075] 2, dyestuff preparation technology of the present invention operates as follows:

[0076] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0077] Put 2400 liters of bottom water in the reaction tank, add 288.75 kg of sodium 2,4-diaminobenzenesulfonate, heat up to 22°C, stir and dissolve, so that the materials are completely dissolved and clarified. Adjust the pH to 6-6.5 with dilute hydrochloric acid. The volume is 2625 liters, and C%=11 in the solution (referring to mass percent concentration, the same below).

[0078] b. Condensation reaction

[0079] Use ...

Embodiment 3

[0099] 1. Ingredients list:

[0100] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0101] Sodium 2,4-diaminobenzenesulfonate 210 1 288.75 1.375

[0102] 2,3-Dichloropropionyl chloride 161.5 1.05 233.2 1.375

[0103] Sodium nitrite 69 1.02 96.77 1.375

[0104] Hydrochloric acid 36.5 2.5 125.47 1.375

[0105] 1-Naphthol-5-sulfonic acid 246 0.98 331.49 1.375

[0106] 2, dyestuff preparation technology of the present invention operates as follows:

[0107] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0108] Put 2400 liters of bottom water in the reaction tank, add 288.75 kg of sodium 2,4-diaminobenzenesulfonate, heat up to 22°C, stir and dissolve, so that the materials are completely dissolved and clarified. Adjust the pH to 6-6.5 with dilute hydrochloric acid. The volume is 2625 liters, and C%=11 in the solution (referring to mass percent concentration, the same below).

[0109] b. Condensation reaction

[0110] Use ...

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PUM

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Abstract

The invention discloses a red reactive dye used for fur and a preparation method thereof. The red reactive dye used for fur takes 2, 4-diaminobenzene sodium sulfonate, 1-naphthol-5-sulfoacid, 2, 3-dichloro propionyl chloride as main raw materials. The red reactive dye of the invention is prepared by condensation, diazotization, coincidence, chromatic light adjustment, intensity adjustment, drying and packaging. The red 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, the exhaustion rate and the color fixing rate are very high. The pre-blending technology and the virgin stock spraying technology are adopted after film processing. Therefore, waste water and waste residue are not generated, greatly contributing to the environmental protection.

Description

technical field [0001] The invention relates to a reactive dye for wool and a preparation method thereof, in particular to a red 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 types of dyes have poor fastness, the shade is not very bright, and it will cause troubles to the environment. In the 21st century, due to environmental and ecological constraints, the requirements for color uptake rate, color fixation rate and dyeing wastewater are getting higher and higher. Acid dyes can no longer meet the development of the times. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a scarlet reactive dye for wool that can reduce environmental pollution, requires low cost of raw materials, high product solubility, bright color, excellent a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/473C09B62/51D06P3/10
Inventor 苏长湘郝津来
Owner TIANJIN DEK CHEM
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