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

Hyperbranched polyaryletherketone, preparation method and application thereof

A poly(aryl ether ketone) and reaction technology are applied in the field of hyperbranched poly(aryl ether ketone) and its preparation, and can solve the problems of restricted scope, high synthesis difficulty and cost, polyamic acid preservation and use time and environmental impact, etc.

Inactive Publication Date: 2014-06-04
BOE TECH GRP CO LTD +1
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The materials used for liquid crystal alignment films in industrial production are all polymer materials, and most of them are linear polymer materials. When the molecular weight of linear polymers is too large, there will be solubility problems. At the same time, for the anchor To determine liquid crystal molecules, it is necessary to introduce as many functional groups as possible on the main chain of the linear molecule, which leads to the difficulty and high cost of synthesis.
In order to improve the solubility of polyimide-based alignment film materials, the precursor polyamic acid material is used, but the storage and use of polyamic acid are greatly affected by time and environment, which greatly restricts its practical application. range

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
  • Hyperbranched polyaryletherketone, preparation method and application thereof
  • Hyperbranched polyaryletherketone, preparation method and application thereof
  • Hyperbranched polyaryletherketone, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1. Synthesis of hydroxyl-terminated hyperbranched polyaryletherketone:

[0024] 2.3619g BB 2 'type monomer 2,4',6-trifluoro-benzophenone (0.01mol), 2.3123g hydroquinone (0.021mol), 3.312g anhydrous potassium carbonate (0.024mol), 25ml N-methylpyrrolidone (NMP), put 10ml of toluene into a 100ml three-necked flask equipped with a stirring device, blow nitrogen, and stir. The salt-forming temperature is controlled at 140°C for 2-2.5 hours, and the temperature is gradually raised to 170°C for 6-8 hours. After cooling down, the reaction mixture is poured into acidic deionized water, washed with hot water under nitrogen protection until neutral, dried, and then Under the protection of nitrogen, it was washed with ethanol three times, filtered hot, and dried to obtain a hyperbranched polyaryletherketone (OH-HPEEK) whose terminal group was hydroxyl-terminated.

[0025] The number average molecular weight of hydroxyl-terminated hyperbranched polyaryletherketone is 2...

Embodiment 2

[0027] Embodiment 2. Synthesis of hydroxyl-terminated hyperbranched polyaryletherketone:

[0028] 2.3619g BB 2 'type monomer 2,4',6-trifluoro-benzophenone (0.01mol), 2.4775g hydroquinone (0.0225mol), 3.312g anhydrous potassium carbonate (0.024mol), 25ml N-methylpyrrolidone (NMP), put 10ml of toluene into a 100ml three-necked flask equipped with a stirring device, blow nitrogen, and stir. The salt-forming temperature is controlled at 150°C for 2-2.5 hours, and the temperature is gradually raised to 220°C for 6-8 hours. After cooling down, the reaction mixture is poured into acidic deionized water, washed with hot water under nitrogen protection until neutral, dried, and then Under the protection of nitrogen, it was washed with ethanol for 3 times, filtered hot, and dried to obtain hyper-hyperbranched polyaryletherketone (OH-HPEEK) whose terminal group was hydroxyl-terminated.

[0029] The number average molecular weight of hydroxyl-terminated hyperbranched polyaryletherketone...

Embodiment 3

[0031] Embodiment 3. the hyperbranched poly(aryl ether ketone) of nitrile group termination

[0032]

[0033] 1.0g of the hydroxyl-terminated hyperbranched polyaryletherketone of Example 1, 0.69g of 4-nitrophthalonitrile (0.004mol), 1.10g of anhydrous potassium carbonate (0.008mol), 20ml of N,N-dimethyl Dimethyl formamide (DMF) was put into a 100ml three-necked flask equipped with a stirring device, blown with nitrogen, and stirred at room temperature for more than 24 hours. The reaction mixture was poured into deionized water, washed with water until neutral, dried, then washed with ethanol three times under nitrogen protection, and dried to obtain nitrile-terminated hyperbranched polyaryletherketone (CN-HPEEK).

[0034] The number average molecular weight of the hyperbranched polyaryletherketone terminated by nitrile group is 27500~45000, and the molecular weight distribution is 1.45~1.84. The infrared characterization results are as follows: figure 1 As shown, the NMR c...

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

PropertyMeasurementUnit
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

A hyperbranched polyaryletherketone, a preparation method for same, and an application thereof. The hyperbranched polyaryletherketone comprises a compound as represented by formula (I) and having a number average molecular mass between 27,500 and 45,000 and a molar mass distribution between 1.45 and 1.84, where R is either -OH or formula (II). The hyperbranched polyaryletherketone can be used in preparing a liquid crystal alignment film. The hyperbranched polyaryletherketone has a structure of increased similarity to liquid crystal molecules and provides an enhanced force between the liquid crystal molecules and the liquid crystal alignment film.

Description

technical field [0001] The invention relates to a hyperbranched polyarylether ketone and its preparation method and application, in particular to a hydroxyl-terminated hyperbranched polyarylether ketone and a nitrile group-terminated hyperbranched polyarylether ketone as well as its preparation method and application. Background technique [0002] Liquid crystal display requires that liquid crystal molecules must be aligned in a certain direction when displaying graphics under the action of an electric field. What can make the liquid crystal molecules arrange in order is the alignment film coated on the inner surface of the liquid crystal cell, and the material forming this film is the liquid crystal alignment film. The materials used for liquid crystal alignment films in industrial production are all high-molecular polymer materials, and most of them are linear polymer materials. When the molecular weight of linear high-molecular polymers is too large, there will be solubil...

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): C08G65/40C08G65/48G02F1/1337
CPCC08G65/40C08G65/48G02F1/133711C08G65/4018C08G83/005
Inventor 严巍
Owner BOE TECH GRP CO LTD
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