Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Reactive dye

A technology for reactive dyes and dye compositions, applied in the field of reactive dyes, can solve the problems of dyes that cannot dye dark colors, high unit cost, unfavorable environmental protection, etc., and achieves good dyeing rate and fixation rate, good dyeing performance, and excellent fastness. Effect

Active Publication Date: 2009-05-27
TIANJIN DEK CHEM
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the unit cost of yellow products used in the printing and dyeing industry is high, the waste of materials is serious, salting out produces sewage, and dyes cannot dye dark colors
Moreover, the active group dyeing needs to be carried out in a strong alkaline medium, which makes it difficult to discharge the dyeing wastewater in a neutral manner, which is not conducive to environmental protection

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
  • Reactive dye
  • Reactive dye
  • Reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This embodiment provides a preparation method of a specific compound in the compound of formula (I), which is a compound of the following formula (I-A):

[0017] The specific preparation method is as follows:

[0018]

[0019] 1. Diazotization of 2-naphthylamine-3,6,8-trisulfonic acid

[0020] 300kg of 70% 2-naphthylamine-3,6,8-trisulfonic acid was dropped into 500kg of water and stirred evenly, then 800kg of crushed ice was added, the temperature was 0°C, and then 200kg of 20% sodium nitrite solution was added quickly, The temperature at the end of the addition is 2°C and the stirring is continued for 2 hours, the end point temperature is 6°C with a slight excess of sodium nitrite, and the excess nitrous acid is removed with industrial sulfamic acid to prepare for coupling.

[0021] 2. Coupling:

[0022] Add 135 kg of 60% m-urea amidoaniline to 300 kg of water, stir at room temperature for 10 minutes, adjust the pH to 7.5 with 20% sodium carbonate solution, and th...

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 provides a yellow active dye. A quaternary ammonium salt dye is formed by dye matrix and nicotinic acid which is an active group of the dye, can dye in neutral or alkalescent medium, and is good in each fastness index after dyeing.

Description

technical field [0001] The invention relates to the technical field of reactive dyes, in particular to a yellow reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes have the characteristics of bright color, excellent application performance, and strong practicability. The active groups in the dye molecules form stable chemical bonds with the fibers and have good fastness. [0003] At present, the unit cost of yellow products used in the printing and dyeing industry is high, the material waste is serious, the salting out produces sewage, and the dye cannot dye dark colors. Moreover, active group dyeing needs to be carried out in a stronger alkaline medium, which makes it difficult to discharge dyeing wastewater neutrally and is not conducive to environmental protection. [0004] The dye provided by the invention can solve the above problems, and provides a dye that can be dyed in a weaker medium, and has good dyeing performance and can i...

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): C09B62/085C09B67/22D06P3/66
Inventor 张兴华张玉卿曹世川
Owner TIANJIN DEK CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com