High-performance polyazo green reactive dye and synthesis and application of dye mixture

A technology of reactive dyes and polyazo, which is applied in the field of synthesis of reactive polyazo dyes, can solve the problems of high-temperature dyes that are not energy-saving, high one-time success rate, and reduce printing and dyeing costs, and achieve good washability, energy saving, Bright and full effect

Inactive Publication Date: 2013-10-09
沈钢
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Currently commercially available reactive green dyes are mainly fruit green and dark green, which are made of blue and yellow. Dark green H-4BD is a monochromatic dye, but it is a high-temperature dye and does not save energy. These dyes are all It has the above-mentioned defects of poor level dyeing and easy coloring, especially under low temperature conditions; for this reason, a series of products with excellent performa

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
  • High-performance polyazo green reactive dye and synthesis and application of dye mixture
  • High-performance polyazo green reactive dye and synthesis and application of dye mixture
  • High-performance polyazo green reactive dye and synthesis and application of dye mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The preparation of embodiment 1 polyazo navy blue dye Ⅰ-1

[0062] In a 1000ml beaker, add 150 parts of water, 28.1 parts of para-ester, 0.1 part of dispersant, stir and beat for 2 hours, add 30 parts of 30% hydrochloric acid, and add 23 parts of 30% sodium nitrite at 0-5 °C The solution was subjected to diazotization reaction for 2 hours. After reaching the end point, sulfamic acid was added to destroy excess nitrous acid, then 341 parts of H acid was added, the temperature was raised to 10-15°C, and the pH was adjusted to 2-2.5 with 15% sodium acetate solution. React for 4 to 6 hours, and when there is no diazonium salt, it is the end point, and it is set aside.

[0063] In a 1000 ml beaker, add 350 parts of water, 52.3 parts of the compound of formula Ⅱ-1 (R 3 , R 4 hydrogen), 0.1 part of dispersant, stir until fully dissolved, add 30 parts of 50% sulfuric acid, add 23 parts of 30% sodium nitrite solution at 0-5°C for diazotization reaction for 2 hours, and add Su...

Embodiment 2-5

[0065] Example 2-5 Preparation of polyazo dark blue and green dyes Ⅰ-2~Ⅰ-5

[0066] With reference to the method of Example 1, dyes I-2 to I-5 can be obtained. Compared with Example 1, the only difference is that the substituents of the compounds of formula II and formula III in the reaction process are different.

[0067]

Embodiment 6-11

[0068] The preparation of embodiment 6-11 polyazo green dye I-6~I-11

[0069] Change the coupling order of the diazo compound of formula II and formula and H acid in a similar manner to Example 1, that is, the diazo compound of formula II is first acidicly coupled with acid H, and then the diazo compound of formula III is subjected to alkali coupling. Sexual coupling to obtain polyazo green dyes Ⅰ-6~Ⅰ-11.

[0070]

[0071]

[0072] Only some dyes of the general formula I are exemplified here, and those skilled in the art can foresee that dyes I with different substituents can be obtained by using different reactants to finally realize the present invention.

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 high-performance polyazo green reactive dye. The reactive dye contains polyazo dye shown in a formula I and is applied to cellulose fibers such as cotton and hemp and protein fibers such as wool and silk for dip dyeing, continuous dyeing and textile printing. The high-performance polyazo green reactive dye is green, has relatively high dye uptake and fixation rate and meanwhile has very high wet fastness such as wash well and perspiration resistance as well as light fastness. As the high-performance polyazo green reactive dye is a monogenetic dye, the monogenetic dyestuff has no disadvantages of poor head and tail and poor side and middle during continuous coloring.

Description

technical field [0001] The invention relates to the synthesis of reactive polyazo dyes, a mixture of high performance polyazo green reactive dyes and its application. Background technique [0002] Reactive dyes, also known as reactive dyes. It is named because its structure contains active groups that can chemically react with hydroxyl or amino groups in natural or synthetic cellulose fibers. This kind of dye reacts with the fiber during dyeing to form a covalent bond, so that the fastness indicators of the dye, especially the wet fastness, are improved, and it has been widely developed and applied, becoming the largest for cellulose fiber. Reactive dyes are the second largest class of dyes after disperse dyes. [0003] With the improvement of living standards, people begin to pay more and more attention to the colors and styles of their usual clothes. As a result, there is more demand for clothes with fuller colors and stronger coloring. [0004] At present, the dark se...

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): C09B62/513C09B67/24D06P1/384D06P3/66
Inventor 沈钢
Owner 沈钢
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap