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

A kind of disazo compound and composite black dye comprising the compound

A technology of black dyes and compounds, applied in the field of composite black dyes, which can solve the problems that the characteristics cannot meet the required requirements, and achieve the effects of high affinity, good linear co-planarity, and long conjugated systems

Active Publication Date: 2015-10-28
HUBEI HUALI DYESTUFF INDAL
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing dyes and compounds that make up dyes still have some properties that do not meet the required requirements

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
  • A kind of disazo compound and composite black dye comprising the compound
  • A kind of disazo compound and composite black dye comprising the compound
  • A kind of disazo compound and composite black dye comprising the compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Preparation of disazo compounds with formula I and formula II structures

[0027] Add 370 parts by weight of DSD acid to an appropriate amount of water for beating for 1 hour, add ice and cool down to 5°C and stir for 30 minutes, then add 240 parts by weight of hydrochloric acid with a mass fraction of 30% and continue stirring for 30 minutes until a uniform acid mixture is obtained. After making 140 parts by weight of sodium nitrite into an aqueous solution with a mass fraction of 30%, add it to the acid mixture of DSD acid and hydrochloric acid for about 60 minutes (after obtaining the acid mixture) for diazotization reaction, and maintain the temperature at 5-10°C , the pH value was 1.2~1.5 and reacted for 2 hours. After the reaction, use sulfamic acid to eliminate excess sodium nitrite to obtain diazonium salt, then add 304 parts by weight of 2-hydroxyl-3-methylbenzoic acid, and maintain the temperature at 5~8 React for 4 hours at ℃ until the 2-hydroxy-3-m...

Embodiment 2

[0031] The preparation of embodiment 2 composite black dyes

[0032] Add 565 parts by weight of 4-ethyl sulfate sulfonyl aniline to an appropriate amount of water to make a slurry for 1 hour, add ice to cool down to 8°C and stir for 30 minutes, maintain the temperature at 8°C, add 240 parts by weight of hydrochloric acid with a mass fraction of 30% and continue stirring for 30 minutes , After 140 parts by weight of sodium nitrite was made into an aqueous solution with a mass fraction of 30%, it was added to a mixture of 4-ethyl sulfate sulfone aniline and hydrochloric acid within 30 minutes for diazotization reaction. Maintain the temperature at 5-8°C, pH value 1.0-1.2 and react for 1.5 hours, then use sulfamic acid to eliminate excess sodium nitrite. After eliminating excess sodium nitrite, add 341 parts by weight of 1-amino-8-naphthol-3.6-disulfonic acid monosodium salt to the diazonium salt, maintain the temperature at 0-5°C for 5 hours, and adjust the pH with baking soda p...

Embodiment 3

[0036] The composite black dye of the present invention can be obtained by fully mechanically mixing 30 parts by weight of the compound of formula I of the present invention, 10 parts by weight of the compound of formula II of the present invention and 60 parts by weight of the compound of formula III of Example 2.

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 bisazo compound and a composite black dye containing the same. The molecular formula of the bisazo compound is shown as a formula I or II. The composite black dye comprises the compounds shown as the formulae I and II, and further comprises a compound shown as a formula III. The bisazo compound has better linear coplanarity and a longer conjugated system, and is high in affinity to fibers. The composite black dye has the characteristics of high solubility, high fixation rate and low conductivity, and is more suitable for digital printing and ink making.

Description

technical field [0001] The invention relates to a disazo compound and a composite black dye containing the compound. Background technique [0002] In recent years, inkjet ink and digital printing technology have been greatly developed, especially the requirements for black dye components are getting higher and higher. In the selection of dyes, dyes need to have low conductivity, moderate surface tension, high color fixation rate, and durability. Sunshine and washing fastness and many other advantages. The existing dyes and the compounds that make up the dyes still have some properties that cannot meet the required requirements. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a disazo compound and a composite black dye containing the compound. [0004] The disazo compound provided by the present invention has a molecular formula as shown in formula I or formula II: [0005] [0006] ...

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): C07C309/46C07C303/32C09B35/215C09B67/22C09B67/42C09D11/328
Inventor 崔孟元艾良军熊建平何向华朱训杰
Owner HUBEI HUALI DYESTUFF INDAL
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