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

Reactive golden yellow RNL diazo dyes and preparation method thereof

An azo dye, golden yellow technology, applied in the field of reactive golden yellow RNL azo dye and its preparation, can solve the problems of insufficient depth, poor water solubility, light color and the like

Inactive Publication Date: 2008-08-27
赵卫国
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The water solubility of the dye is poor after adding alkali, and the solubility is basically unchanged, but the color of the dyed fiber is light and the shade is dark, and the depth is not enough.

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 golden yellow RNL diazo dyes and preparation method thereof
  • Reactive golden yellow RNL diazo dyes and preparation method thereof
  • Reactive golden yellow RNL diazo dyes and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Weigh 24.9 parts of m-bis and m-bis acylate and add 200 ml of water to make a slurry.

[0038] (2) Weigh 28.1 parts of p-(β-hydroxyethylsulfone sulfate) aniline, add an appropriate amount of ice water and beat at 0°C for 2 hours, add quantitative hydrochloric acid, and then add 6.9 parts of sodium nitrate to control the blue color of Congo red test paper , KI test paper is slightly blue, and react for 1 hour after adding sodium nitrite.

[0039] (3) Coupling the prepared p-(β-hydroxyethylsulfone sulfate) aniline diazonium salt with the coupling component at a temperature of 0-5°C and adjusting the pH to 4.5-5.5 with baking soda, and reacting After 3 hours until the diazonium salt disappeared, a yellow photoactive golden RNL azo dye was obtained by filtration.

Embodiment 2

[0040] Embodiment 2: Using the formula of Embodiment 1, coupling under the conditions of 10-15° C., pH=5.5, to obtain a yellow photoactive golden yellow RNL azo dye.

Embodiment 3

[0042] (1) Weigh 23.8 parts of m-bis and m-bis-acylate with 200 ml of water and make a slurry.

[0043] (2) Weigh 28.1 parts of p-(β-hydroxyethylsulfone sulfate) aniline, add appropriate amount of ice water and beat at 0°C for 2 hours, add quantitative hydrochloric acid, and then add 6.9 parts of sodium nitrite to control the blueness of Congo red test paper. Color, KI test paper slightly blue, react for 1 hour after adding sodium nitrate.

[0044] (3) The diazonium salt of the prepared p-(β-hydroxyethyl sulfone sulfate) aniline is coupled with the coupling component at a temperature of 0-5° C., and the pH is adjusted to 4-4.5 with sodium bicarbonate, and the reaction After 3 hours until the diazonium salt disappeared, a yellow photoactive golden RNL azo dye was obtained by filtration.

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

Reactive golden yellow RNL azo dye and a preparation process are disclosed, and the structural formula is showed as followed, wherein R1, R2= H, COCH3, SO3H, OCH3, CH3, C2H5, OC2H5 and the like. The dye is the mixture of various compounds which is prepared through coupling m-bis or m-bis compound acyl with diazonium salt of sulphate ethyl sulphone aniline compound which comprises sulfonic acid group or methyl group, methoxyl group, ethyl group and ethoxyl group. The dye is suitable to be used on the dying, direct printing and discharge of cotton fiber, and has excellent fastness, reproducibility, level-dyeing property, compatibility, alkali resistant salt stability and lifting power, which can match with active black KN-B to obtain black color with favorable jet black.

Description

technical field [0001] The invention relates to a reactive golden yellow RNL azo dye and a preparation method thereof. Background technique [0002] The orange vinyl sulfone dye GF with two different active groups invented by Korea Lihe Company has the following structure: [0003] [0004] The water solubility of the dye is poor after adding alkali, the solubility is reduced, the dye molecules are easy to associate, the affinity to the fiber is increased, and it is easy to cause color flowers. The color rate is low. [0005] In addition, the yellow 1 that appeared on the market # It is a yellow vinylsulfone dye with two identical active groups, and its structure is as follows: [0006] [0007] The water solubility of the dye is poor after adding alkali, and the solubility is basically unchanged, but the color of the dyed fiber is light and the shade is dark, and the depth is not enough. Contents of the invention [0008] The purpose of the present invention is ...

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): C09B62/51C09B62/008
Inventor 赵卫国苏金奇鞠苏华顾天龙王国民
Owner 赵卫国