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

Preparation technique of solvent red 179

A production process, solvent red technology, applied in the production process field of solvent red 179, can solve the problems of increased production cost, poor product quality, difficult recycling, etc., and achieve the effects of cost reduction, less emissions, and production cost savings

Active Publication Date: 2007-02-28
南通龙翊新材料科技有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This process produces solvent red 179, and the reaction yield is low, about 90%. Alcohol and glacial acetic acid are not easy to recycle and apply mechanically. , resulting in a waste of resources and pollution to the environment

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 technique of solvent red 179
  • Preparation technique of solvent red 179
  • Preparation technique of solvent red 179

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described:

[0022] 1. Synthesis: pump glacial acetic acid whose solvent accounts for 10-15 times the total weight of raw materials in the reaction kettle, start stirring, put in raw materials 1,8 naphthalene anhydride raw materials, and then add raw materials 1,8 diaminonaphthalene raw materials, 1,8 naphthalene The molar ratio of anhydride and 1,8 diaminonaphthalene dosage is put into by 1: 1.01, then add the auxiliary agent Kao A-60 (chemical name: ammonium molybdate) whose dosage is 1-1.5‰ of the total weight of raw materials, and put in the cap after casting. Open the water inlet and outlet valves of the condenser, heat up the steam entering the jacket, and raise the temperature to 110-116°C in about 1 hour, keep it in the reflux state for 10-15 hours, after the heat preservation is over, cool down to 35-45°C, and keep it for 10-20 minutes. After the maintenance is over, open the ...

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 solvent red179 processing technique in the chemical engineering domain, which comprises the following steps: compounding; filtering; washing; distilling, wherein the processing technique uses glacial acetic acid as solvent; the filtrate after distilling can be recycled, which reduces the cost.

Description

technical field [0001] The invention relates to a production process of solvent red 179, which belongs to the field of chemical industry. Background technique [0002] Solvent Red 179, English name Solvent Red 179, molecular formula: C 22 h 12 N 2 O, can be used for pre-spinning coloring of plastics, various resins and fibers, and its solubility is better than that of transparent red EG. C.I. Dyestuff index number: SolventRed 179C.I.564150 Shade: yellow light red, its characteristics: transparent red oil-soluble dye with yellow light, excellent heat resistance, light resistance and migration resistance, high tinting strength, wide application range. Uses: It can be used for pre-spinning coloring of plastics, various resins and fibers, and its solubility is better than that of transparent red EG. Its structural formula is: [0003] [0004] At present, the usual process for producing Solvent Red 179 is as follows: first pump water, alcohol, and glacial acetic acid (th...

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): C09B57/00C07C251/30D06P1/90C08J3/20
Inventor 杨连飞茅志宏王思源
Owner 南通龙翊新材料科技有限公司
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