High-temperature-resistant polycarbonate and preparation method thereof

A polycarbonate and high temperature resistant technology, applied in the field of high temperature resistant polycarbonate and its preparation, to achieve the effect of simple reaction conditions

Active Publication Date: 2016-07-27
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
View PDF12 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the above-mentioned patents all use bisphenols containing large-volume rigid groups containing carbon and oxygen atoms as monomers for polycarbonate synthesis. Patent report of polycarbonate

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
  • High-temperature-resistant polycarbonate and preparation method thereof
  • High-temperature-resistant polycarbonate and preparation method thereof
  • High-temperature-resistant polycarbonate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of Dihydric Phenol Monomers Containing Imide Groups

[0032] Add 16.659g (0.0375mol) of 4,4'-(hexafluoroisopropylene) diphthalic anhydride, 8.3045g (0.0750mol) of aminophenol and 100ml of dimethylformamide into the reaction vessel, and stir at room temperature for 3~ 5h, then add 0.15mol acetic anhydride and 0.15mol triethylamine, raise the temperature to 50-60°C, and react for 2-4h; the obtained product is added dropwise to deionized water under stirring condition, then it is suction-filtered, washed and dried Dry, obtain amidation reaction product;

[0033] Add 17.76g (0.0250mmol) of the amidation reaction product into the reaction vessel, add 125ml of methanol and 125ml of chloroform, and add 1.657g of toluenesulfonic acid at the same time, raise the temperature to 75-85°C, and react for 3-5h. Then the temperature was lowered to 35-45° C., and the solvent was removed. Finally, recrystallize in 200 ml of deionized water / dioxane (1:1 volume ratio), wash and...

Embodiment example 1

[0036] The molecular structural formula of the polycarbonate prepared by embodiment case 1 is:

[0037]

Embodiment example 2

[0039] Synthesis of Dihydric Phenol Monomers Containing Imide Groups

[0040] Add 12.609g (0.0375mol) of 4,4'-isopropyl diphthalic anhydride, 8.3045g (0.0751mol) of aminophenol and 100ml of dimethylformamide into the reaction vessel, stir at room temperature for 3 to 5 hours, and then Add 0.15mol acetic anhydride and 0.15mol triethylamine, raise the temperature to 50-60°C, and react for 2-4 hours; the obtained product is added dropwise to deionized water under stirring conditions, and then it is suction-filtered, washed and dried to obtain Amidation reaction product;

[0041] Add 15.06g (0.25mmol) of the amidation reaction product into the reaction vessel, add 125ml of methanol and 125ml of chloroform, and add 1.657g of toluenesulfonic acid at the same time, raise the temperature to 75-85°C, and react for 3-5 hours. Then the temperature was lowered to 35-45° C., and the solvent was removed. Finally, recrystallize in 200 ml of deionized water / dioxane (1:1 volume ratio), wash ...

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
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention discloses high-temperature-resistant polycarbonate and a preparation method thereof. According to the preparation method, a dihydric phenol monomer containing imide groups is synthesized by virtue of reaction between binary anhydride and aminophenol, and high-temperature-resistant polycarbonate is prepared from the dihydric phenol monomer containing the imide groups and diphenyl carbonate by virtue of melting ester exchange. The glass-transition temperature of high-temperature-resistant polycarbonate prepared by virtue of the preparation method exceeds 250 DEG C, meanwhile, and high-temperature-resistant polycarbonate has high transparency and is applicable to high-temperature-resistant transparent plastic components such as airplane plastic components, automobile lamps and high-temperature medical instruments.

Description

technical field [0001] The invention relates to a high-temperature-resistant polycarbonate and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Bisphenol A polycarbonate has become one of the most important optically transparent materials due to its high light transmittance, high impact resistance, good temperature resistance and excellent creep resistance. Its application is changing from ordinary optical fields such as Optical lenses, lenses, lenses, etc., are gradually penetrating into high-end optical fields such as aviation, aerospace, automobiles and optoelectronics to replace traditional inorganic glass. However, compared with inorganic glass, the high temperature resistance of bisphenol A polycarbonate is low, and its glass transition temperature generally does not exceed 150°C, making it difficult to apply to environments above 150°C. With the development of high-temperature-resistant transparent materials, su...

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): C08G64/30
CPCC08G64/307
Inventor 陈宇宏
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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