Polyimide containing fluorine, and its preparing method and use

A fluorine-containing polyimide, polyimide technology, applied in chemical instruments and methods, color-changing fluorescent materials, etc., can solve problems such as unreported photochromic properties

Inactive Publication Date: 2007-06-13
JIANGSU UNIV
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the photochromic performance and application of the a

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
  • Polyimide containing fluorine, and its preparing method and use
  • Polyimide containing fluorine, and its preparing method and use
  • Polyimide containing fluorine, and its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Dissolve 1.47g 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA, Japan TCI Company) in 20g N,N-dimethylformamide (DMF), add In a four-neck flask, take 5,5'-(hexafluoroisopropyl)-bis-(2-aminophenol) (6FHP , Japan TCI company) is also dissolved in the DMF solution of 20g, adds in the above-mentioned four-necked flask after dissolving completely, at room temperature under N 2 Electromagnetic stirring in the environment for 1 hour generates a polyimide acid (PAA) solution; 2.2 ml of toluene solution is added thereto, and the polyimide acid solution is thermally cyclized at 160° C. for 2.5 hours. Water is taken out by azeotropic toluene to obtain fluorine-containing polyimide containing active hydroxyl groups; 1.57g of disperse red DR-1 containing azobenzene and 1.31g of triphenylphosphine are dissolved in 16g of DMF, and then added Add the above-mentioned fluorine-containing polyimide with active hydroxyl groups, continue to stir at room temperature for 25 hou...

Embodiment 2

[0031] Example 2 Dissolve 1.09g of pyromellitic anhydride (PMDA) in 33g of N,N-dimethylformamide (DMF), add it to a four-necked flask after completely dissolving, and take an equimolar amount of pyromellitic anhydride. 5,5'-(hexafluoroisopropyl)-bis-(2-aminophenol) (6FHP, Japan TCI Company) was also dissolved in 33g of DMF solution, and added to the above four-necked flask after complete dissolution, at room temperature next to N 2 Electromagnetically stir in the environment for 1.5h to generate a polyimide acid (PAA) solution; add 2.2ml of toluene solution to it, and thermally cyclize the polyimide acid solution at 160°C for 4h. Water is taken out by azeotropic toluene to obtain a fluorine-containing polyimide containing active hydroxyl groups; 1.26g of disperse red DR-1 containing azobenzene and 1.32g of triphenylphosphine are dissolved in 19g of DMF, and then added Add the above-mentioned fluorine-containing polyimide with active hydroxyl groups, continue to stir at room t...

Embodiment 3

[0032] Example 3 Dissolve 1.09g of pyromellitic anhydride (PMDA) in 48g of N,N-dimethylformamide (DMF), add it to a four-necked flask after completely dissolving, and take an equimolar amount of pyromellitic anhydride. 5,5'-(hexafluoroisopropyl)-bis-(2-aminophenol) (6FHP, Japan TCI Company) was also dissolved in 48g of DMF solution, and added to the above-mentioned four-necked flask after complete dissolution, at room temperature next to N 2 Electromagnetically stir in the environment for 2 hours to generate a polyimide acid (PAA) solution; add 2.2ml of toluene solution to it, and thermally cyclize the polyimide acid solution at 160°C for 5 hours, and at the same time produce water Azeotroped by toluene to obtain fluorine-containing polyimide containing active hydroxyl groups; 1.26g of disperse red DR-1 containing azobenzene and 1.32g of triphenylphosphine were dissolved in 31g of DMF, and then added to In the above-mentioned fluorine-containing polyimide with active hydroxyl...

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

This invention discloses the fluoric poly-imides resin and its preparation method, as well as its application. It relates to the azobenzene photochromic compounds and its preparation technology. Using two different anhydrides, the fluoric poly-imides resin whose amidation principal chain accompanied with active hydroxyl was synthesized firstly, then catenated DR1 to the side chain skeleton of the fluoric poly-imides resin. So the poly-imides resin with azobenzene side chain was obtained. The polymer obtained by this invention has the good performance of heat-staple and workability, and has the similitude photochromic action with monomer. The poly-imides resin has the widespread application prospect in the aspect of optical information storage.

Description

technical field [0001] The invention relates to an azobenzene photochromic compound and its preparation technology. Specifically refers to the bonding of optically active azo materials to polyimide polymers to prepare side-chain fluorine-containing polyimide materials with photochromic properties; and because of their excellent photochromic properties Applications in optical information storage, optical conversion devices and optical switches. Background technique [0002] As a new type of functional material, azobenzene photochromic compounds can be widely used in frontier fields such as optical information storage, optical conversion devices, and optical switches. The currently researched azo polymer systems mainly include: [0003] (1) Host / guest doping system. Optoelectronics·Laser, 2004.15(4)P454-458. The photoisomerization process of methyl red (MR) solution and MR / polymethyl methacrylate (PMMA) film was studied. Since this is a kind of main / Guest doping system, t...

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
IPC IPC(8): C08G73/10C09K9/00
Inventor 邱凤仙徐红良
Owner JIANGSU 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