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

Red disazo dye monomeric compound and preparation method thereof

A technology of dye monomers and compounds, applied in the direction of azo dyes, chemical instruments and methods, organic dyes, etc., can solve the problems of poor level dyeing, fast coloring of dyes, etc., and achieve bright shades, low production costs, and excellent quality. Leveling and Lifting Effects

Inactive Publication Date: 2011-09-14
SHANGHAI KEHUA DYESTUFF IND +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned dyes still have the problems of fast coloring and poor level dyeing

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
  • Red disazo dye monomeric compound and preparation method thereof
  • Red disazo dye monomeric compound and preparation method thereof
  • Red disazo dye monomeric compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Preparation of the compound of formula (I-1):

[0038] 1. Preparation of diazonium components:

[0039] In a 500 mL flask, add 7.34 g of 4,4'-diamino-3,3'-dimethyl-diphenylcyclohexane (formula (II-1)) hydrochloride and 100 mL of water, and stir for 15 minutes , Add 7.1g of industrial hydrochloric acid with a mass fraction of 31%, stir for 15 minutes, cool to 0~5℃, add sodium nitrite solution (3g+10g water) within 10~15 minutes, after adding sodium nitrite solution, Use starch potassium iodide test paper to check whether sodium nitrite is excessive (if the test paper does not discolor, add sodium nitrite to excess), and keep stirring at 0~5℃ for 1~1.5 hours. After confirming that the end point of diazonium is reached, add an appropriate amount of sulfamic acid to dissolve the excess sodium sulfite, adjust the pH value of the diazonium salt solution with solid ammonium bicarbonate to be stable from 2.0 to 2.5 for use. (End point detection method: use a glass rod t...

Embodiment 2～6

[0055] According to the preparation method of Example 1, an equimolar amount of the compound of formula (II-1) or (II-2) is selected as the diazo component, and an equimolar amount of formula (III-1) or formula (III-2) ) Is used as the first coupling component, an equimolar amount of the compound of formula (IV-1) or (IV-2) is selected as the second coupling component, and the two couplings are carried out in the order in Table 1. The active ingredient prepared is the red bisazo dye of formula (I-2) to (I-6).

[0056] Formula (II-1)

[0057] Formula (II-2)

[0058] Formula (III-1)

[0059] Formula (III-2)

[0060] Formula (IV-1) Formula (IV-2)

[0061] Table 1

[0062] Implement

[0063] 6

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 red disazo dye monomer compound and a preparation method thereof. The structure of the compound is shown in the formula (1). After commercialization treatment, the red disazo dye monomer compound of the invention is capable of providing dyes in the form of corpuscular liquid and cream or in the form of powder and granule after being treated by a method of spray drying.

Description

(1) Technical field [0001] The invention relates to a red bisazo dye monomer compound and a preparation method thereof. (2) Background technology [0002] Red disazo dyes can be widely used in the dyeing of nylon, wool, silk and other fabrics. Such as the red bisazo dye provided by CN1047606C, its structure is: [0003] [0004] The dye is diazotized from 4,4'-diamino-3,3'-dimethoxydiphenylcyclohexane, and then mixed with sodium 2-naphthol-3,6-disulfonate for the first time Coupling, and then coupling with 2,8-dihydroxynaphthalene-6-sulfonate for the second time. This dye overcomes the problem that prahong 3B and 3B-E cannot hang white on the market, but the dye uptake rate is low. . To overcome the above shortcomings, patent CN1186395C provides an improved acid red dye with the following structure: [0005] [0006] However, the above-mentioned dyes still have the problems of fast coloring and poor levelling properties. (3) Summary of the invention [0007] The object of the pre...

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 Patents(China)
IPC IPC(8): C09B35/037C09B67/24
Inventor 阮伟祥陈建平胡顺勇
Owner SHANGHAI KEHUA DYESTUFF IND