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

Preparation method of Metanil yellow G

An acid golden yellow, production method technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problem of undisclosed technical data, and achieve the goal of improving output and quality, reducing production, and protecting the environment. Effect

Inactive Publication Date: 2014-12-31
TIANJIN DAGANG DYEING FACTORY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no similar products have been found in the market, and no relevant technical information has been found to be published.

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
  • Preparation method of Metanil yellow G
  • Preparation method of Metanil yellow G
  • Preparation method of Metanil yellow G

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] A kind of preparation method of embodiment acid golden yellow G, concrete preparation steps are as follows:

[0021] (1) Diazotization reaction

[0022] Add quantitative water to the diazotization reaction kettle, then add quantitative m-aminobenzenesulfonic acid, stir for 1 hour to make it a uniform suspension, add hydrochloric acid quantitatively into the reaction kettle through a metering tank, add an appropriate amount of ice to cool down to 5°C, and The sodium nitrite solid and water are added into the dissolving tank and stirred to dissolve, and the dissolved sodium nitrite solution is added into the reaction kettle, and stirred for 1 hour.

[0023] (2) Coupling reaction

[0024] Add the diazo solution prepared above into the coupling tank, add diphenylamine emulsion at 20°C, act on it to pH = 1.5, adjust pH = 4.3 with soda ash solution, keep at 13°C until the diazo compound disappears, and then Stir for 30 minutes to produce acidic golden yellow G, adjust the p...

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

A preparation method of Metanil yellow G comprises the steps of a diazotization reaction, a coupling reaction, roller drying, crushing and mixing packaging. The method can effectively reduce the output of byproducts in the production process in order to improve the output and the quality of a product and effectively protect environment.

Description

(1) Technical field [0001] The invention relates to a direct dye production process, in particular to a production method of acid golden yellow G. (2) Background technology [0002] At present, acid golden yellow G is one of the main golden dye varieties, mainly used in dyeing agent, acid-base indicator, coloring of soap and dyeing of silk, wool, paper, leather, etc. However, in the production process of acid golden yellow G, the output and quality of the product are not high when the existing process is produced, which causes the production of by-products in the synthesis process to increase, and these by-products will reduce the quality of the product and pollute the environment. . The production method of acid golden yellow G involved in this invention can effectively reduce the amount of by-products produced in the production process, thereby improving the output and quality of the product, and at the same time effectively protecting the environment. At present, no sim...

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): C09B29/08
Inventor 李兴江
Owner TIANJIN DAGANG DYEING FACTORY
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com