Check patentability & draft patents in minutes with Patsnap Eureka AI!

Yellow reactive dye wide in applicable range and preparation method thereof

A reactive dye and yellow technology, applied in the field of yellow reactive dye and its preparation, can solve the problems of increasing dye coloring rate, color fixing rate and dye wastewater requirements, not enough bright color, poor fastness, etc. To achieve the effect of bright color, easy operation and excellent fastness performance

Inactive Publication Date: 2013-01-09
TIANJIN DEK CHEM
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used dyeing dyes for textiles 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 bright enough, and it will cause troubles for environmental protection. Due to environmental and ecological constraints Constraints, the requirements for the color uptake rate, color fixation rate and dye wastewater of dyes are getting higher and higher

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
  • Yellow reactive dye wide in applicable range and preparation method thereof
  • Yellow reactive dye wide in applicable range and preparation method thereof
  • Yellow reactive dye wide in applicable range and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of yellow reactive dye, this reactive dye has the structural formula of formula (II):

[0047]

[0048]

[0049] The preparation method of this reactive dye, comprises the steps:

[0050] a, diazotization: add 180 parts of bottom water to the diazotization reaction tank, add 30.3 parts of amino acid C, add 100 parts of crushed ice after stirring evenly, add 15 parts of 30wt% hydrochloric acid, and then quickly add 35 parts of 20wt% hydrochloric acid Sodium nitrate aqueous solution, keep stirring for 2 hours at 0-5°C, after the reaction is completed, remove excess nitrous acid with sulfamic acid to obtain diazonium solution for coupling;

[0051] b. Coupling: Add 80 parts of bottom water to the coupling tank, then add 18.7 parts of m-semicarbazide, add 15wt%Na 2 CO 3 Adjust the pH of the solution to 7, disperse evenly, then add the diazonium solution prepared in step a in 1 hour, and use 15wt% Na 2 CO 3 The pH of the solution is maintained at 6.5-7, the ...

Embodiment 2

[0056] A yellow reactive dye, the reactive dye has the structural formula of formula (III):

[0057]

[0058] a, diazotization: add 180 parts of bottom water to the diazotization reaction tank, add 30.3 parts of amino acid C, add 100 parts of crushed ice after stirring evenly, add 15 parts of 30wt% hydrochloric acid, and then quickly add 35 parts of 20wt% hydrochloric acid Sodium nitrate aqueous solution, keep stirring for 2 hours at 0-5°C, after the reaction is completed, remove excess nitrous acid with sulfamic acid to obtain diazonium solution for coupling;

[0059] b. Coupling: Add 80 parts of bottom water to the coupling tank, then add 18.7 parts of m-semicarbazide, add 15wt%Na 2 CO 3 Adjust the pH of the solution to 7, disperse evenly, then add the diazonium solution prepared in step a in 1 hour, and use 15wt% Na 2 CO 3 The pH of the solution is maintained at 6.5-7, the temperature is 10°C-15°C, and after the addition is completed, it is stirred under the above con...

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 relates to yellow reactive dye wide in applicable range and a preparation method thereof. The molecular structure of the yellow reactive dye is shown as formula (I), wherein the R is CH2CH2OSO3Na or -CH=CH2. The prepared reactive dye is bright in luster after dyeing, excellent in various fastness performances, convenient to use and high in applicability, and is easy to operate, free of waste water and beneficial to the environment in technical process.

Description

technical field [0001] The invention relates to a reactive dye, in particular to a yellow reactive dye with a wide range of application and a preparation method thereof. Background technique [0002] At present, the commonly used dyeing dyes for textiles 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 bright enough, and it will cause troubles for environmental protection. Due to environmental and ecological constraints Restrictions, the requirements for the color uptake rate, color fixation rate and dye wastewater of dyes are getting higher and higher. Reactive dyes are more and more widely used in the printing and dyeing process because of their bright colors, convenient application, covalent bonding with fibers, and excellent fastness properties. With the development of its application properties, the dyeing of reactive dyes has been widely used in the dyeing of cotton, wool,...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/51D06P1/382D06P1/384D06P3/66
Inventor 张兴华张玉卿周顺茹
Owner TIANJIN DEK CHEM
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com