Unlock instant, AI-driven research and patent intelligence for your innovation.

Bright yellow reactive dye for fur and preparation thereof

A technology of reactive dyes and bright yellow, applied in the field of reactive dyes for wool and their preparation, to achieve the effects of excellent solubility, good light fastness, bright and beautiful color light

Inactive Publication Date: 2009-07-15
TIANJIN DEK CHEM
View PDF1 Cites 2 Cited by
  • 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

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

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

[0039] 2,3-Dibromopropionyl chloride 250.5 1.05 361.66 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, dyestuff preparation technology of the present invention operates as follows:

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

[0045] Put 2400 liters of bottom water in the reaction tank, add 310.75 kg of potassium 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 2825, and C%=11 in the solution (referring to mass percent concentration, the same below).

[0046] b. Condensation reaction

[0047] Use direct ice an...

Embodiment 2

[0069] 1. Ingredients list:

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

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

[0072] 2,3-Dibromopropionyl chloride 250.5 1.05 361.66 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, dyestuff preparation technology of the present invention operates as follows:

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

[0078] Put 2400 liters of bottom water in the reaction tank, add 310.75 kg of potassium 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 2825 liters, and C%=11 in the solution (referring to mass percent concentration, the same below).

[0079] b. Condensation reaction

[0080] Use direct...

Embodiment 3

[0096] 1. Ingredients list:

[0097] Raw material name Molecular weight Molecular ratio Percentage (Kg) Feeding amount (Kmol)

[0098] p-Phenylenediamine o-sulfonic acid 188 1 258.5 1.375

[0099] 2,3-Dibromopropionyl chloride 250.5 1.07 368.55 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, dyestuff preparation technology of the present invention operates as follows:

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

[0105] Put 2,400 liters of bottom water in the reaction tank, add 258.5 kg of p-phenylenediamine o-sulfonic acid, heat up to 35° C., adjust the 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 C%=11 in the solution (referring to mass percent concentration, the same below).

[0106] b. Condensation reaction

[0107] Use direct ice and jac...

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
Login to View More

PUM

No PUM Login to View More

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-dibromo 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, 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 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 light yellow reactive dye for wool that can reduce environmental pollution, requires low raw material cost, high product solubility, bright color, ...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09B62/473C09B62/51D06P3/10
Inventor 张兴华苏长湘
Owner TIANJIN DEK CHEM