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Red reactive dye for fur and preparation thereof

A technology of reactive dyes and red, applied in the field of reactive dyes for wool and its preparation, to achieve the effects of bright and beautiful shades, promotion of environmental protection, high exhaustion rate and color fixation rate

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

AI Technical Summary

Benefits of technology

This patented new type of chemical that makes up white hairs looks brighter than normal gray or yellowish grey when exposed to sunlight over time without losing its color permanently due to oxidative damage caused by UV ray exposure during storage. These improvements make it more durable and longer lasting compared with existing methods such as bleaching agents used on top layers of clothing made from synthetic fibers like polyamide (PA) fiber bundles.

Problems solved by technology

The technical problem addressed in this patented text relates to improving the durability or effectiveness of colored fabrics by developing better chemicals that make them stronger without causing harmful effects on their surroundings during use.

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

[0033] 1. Ingredients list:

[0034] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0035] Sodium 2,4-diaminobenzenesulfonate 210 1 288.75 1.375

[0036] 2,3 dibromopropionyl chloride 250.5 1.05 361.66 1.375

[0037] Sodium nitrite 69 1.02 96.77 1.375

[0038] Hydrochloric acid 36.5 2.5 125.47 1.375

[0039] 1-Naphthol-5sulfonic acid 246 0.98 331.49 1.375

[0040] 2, dyestuff preparation technology of the present invention operates as follows:

[0041] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0042] 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).

[0043] b. Condensation reaction

[0044] Use d...

Embodiment 2

[0069] 1. Ingredients list:

[0070] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0071] Sodium 2,4-diaminobenzenesulfonate 210 1 288.75 1.375

[0072] 2,3-Dibromopropionyl chloride 250.5 1.05 361.66 1.375

[0073] Sodium nitrite 69 1.02 96.77 1.375

[0074] Hydrochloric acid 36.5 2.5 125.47 1.375

[0075] 1-Naphthol-5-sulfonic acid 246 0.98 331.49 1.375

[0076] 2, dyestuff preparation technology of the present invention operates as follows:

[0077] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0078] 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).

[0079] b. Condensation reaction

[0080] Use ...

Embodiment 3

[0100] 1. Ingredients list:

[0101] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0102] Sodium 2,4 diaminobenzenesulfonate 210 1 288.75 1.375

[0103] 2,3-Dibromopropionyl chloride 250.5 1.05 361.66 1.375

[0104] Sodium nitrite 69 1.02 96.77 1.375

[0105] Hydrochloric acid 36.5 2.5 125.47 1.375

[0106] 1-Naphthol-5-sulfonic acid 246 0.98 331.49 1.375

[0107] 2, dyestuff preparation technology of the present invention operates as follows:

[0108] a. Dissolution of sodium 2,4-diaminobenzenesulfonate

[0109] 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).

[0110] b. Condensation reaction

[0111] Use ...

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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-dibromo 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 environmental protection.

Description

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Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Owner TIANJIN DEK CHEM
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