Synthesis of hyperbranched azo polymer and modification method of same

A kind of technology of azo polymer and synthesis method, which is applied in the direction of chemical instruments and methods, optical record carriers, color-changing fluorescent materials, etc., to achieve the effect of cheap raw materials, easy availability of raw materials, and low price

Inactive Publication Date: 2015-03-25
ZHANJIANG NORMAL UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Designing and synthesizing azobenzene photochromic polymer optical storage materials with excellent comprehensive performance is still a very challenging topic

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
  • Synthesis of hyperbranched azo polymer and modification method of same
  • Synthesis of hyperbranched azo polymer and modification method of same
  • Synthesis of hyperbranched azo polymer and modification method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw materials and ratio:

[0031] Azoresorcinolsulfonic acid 5.0g

[0032] 4,4’-Diphenylmethane diisocyanate 5.9 g

[0033] N,N-Dimethylformamide 207.0 g

[0034] Preparation Process:

[0035] Firstly, azoresorcinolsulfonic acid was dissolved in DMF to form a solution with a concentration of 5 ± 0.25% by mass, which was set aside. In pass N 2 Under certain conditions, add 4,4'-diphenylmethane diisocyanate (MDI) and DMF into a four-neck flask, stir and dissolve at 35±5°C to form a solution with a mass percentage concentration of 5±0.25%, and 35±5°C Next, add azoresorcinolsulfonic acid DMF solution dropwise over 4 to 5 hours. After the dropwise addition, at 35±5° C., a constant temperature reaction was carried out for 248 hours, and the synthesis reaction was completed.

Embodiment 2

[0037] Raw materials and ratio:

[0038] Azoresorcinolsulfonic acid 3.0g

[0039] 4,4’-Diphenylmethane diisocyanate 2.4 g

[0040] N,N-Dimethylformamide 103.0 g

[0041] Preparation Process:

[0042] Firstly, azoresorcinolsulfonic acid was dissolved in DMF to form a solution with a concentration of 5 ± 0.25% by mass, which was set aside. In pass N 2 Under certain conditions, add 4,4'-diphenylmethane diisocyanate (MDI) and DMF into a four-neck flask, stir and dissolve at 35±5°C to form a solution with a mass percentage concentration of 5±0.25%, and 35±5°C Next, add azoresorcinolsulfonic acid DMF solution dropwise over 4 to 5 hours. After the dropwise addition, at 35±5° C., a constant temperature reaction was carried out for 248 hours, and the synthesis reaction was completed.

Embodiment 3

[0044] Raw materials and ratio:

[0045] Azoresorcinolsulfonic acid 50.0 g

[0046] 4,4’-Diphenylmethane diisocyanate 59.0 g

[0047] N,N-Dimethylformamide 2071.0 g

[0048] Preparation Process:

[0049] Firstly, azoresorcinolsulfonic acid was dissolved in DMF to form a solution with a concentration of 5 ± 0.25% by mass, which was set aside. In pass N 2 Under certain conditions, add 4,4'-diphenylmethane diisocyanate (MDI) and DMF into a four-neck flask, stir and dissolve at 35±5°C to form a solution with a mass percentage concentration of 5±0.25%, and 35±5°C Next, add azoresorcinolsulfonic acid DMF solution dropwise over 4 to 5 hours. After the dropwise addition, at 35±5° C., a constant temperature reaction was carried out for 248 hours, and the synthesis reaction was completed.

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 relates to a synthesis and modification method of a hyperbranched azo polymer, which uses azoresorcinol sulfonic acid and 4,4'-diphenylmethane diisocyanate (MDI) as raw materials and utilizes azo The hydroxyl group of quinone sulfonic acid, the sulfonic acid group and the isocyanate group in the MDI molecule are polycondensed under specific reaction conditions to form a hyperbranched azo polymer. During the reaction, the change of the absorbance of the system at a wavelength of 430nm is used to track the synthesis hyperbranch The reaction process of the azo polymer. The hydroxyl group on the periphery of the synthesized polymer molecule reacts with succinic anhydride / trimellitic anhydride to improve the solubility of the hyperbranched azo polymer; the maximum absorption peak of the π→π* transition of the synthesized hyperbranched azo polymer is 425? nm, trimellitic anhydride modified hyperbranched azo polymer is basically the same as the hyperbranched azo polymer π→π* transition maximum absorption peak, succinic anhydride modified hyperbranched azo polymer azo group π→π* transition is the largest Absorption peak from 425? nm? Redshifted to 501nm.

Description

technical field [0001] The present invention relates to the synthesis and modification method of a hyperbranched azo polymer, and relates to the synthesis of a hyperbranched azo polymer containing azobenzene structural units between branches, especially the maximum absorption peak of the π→π* transition Synthesis of 425 nm hyperbranched azo polymer and its modification method. Background technique [0002] The research of optical disc storage technology is an important research content of optical information storage technology, and its core is storage material. In the past 20 years, optical disc storage materials have gradually developed into molecular switch materials, such as laser ultrafast switches, photochromic switches, fluorescent switches and other switch materials. According to research, if the switching element is as small as the molecular size, the storage density of the computer can be increased by several orders of magnitude, while the input energy is signific...

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): C08G18/83C09K9/02G11B7/245C08G18/32
CPCC08G18/3857C08G18/831C09K9/02C09K2211/1425C09K2211/1433G11B7/245
Inventor 冯宗财宋秀美
Owner ZHANJIANG NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap