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

Polycarbonate material and preparation method thereof

A technology of polycarbonate and copolymerization reaction, applied in the field of polymers, can solve problems such as complex structure, and achieve the effect of simple preparation method and good structure control ability

Inactive Publication Date: 2016-05-11
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF11 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, although there have been reports on the crystallization of carbon dioxide copolymers, they all require chiral catalysts with complex structures to be catalyzed.

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
  • Polycarbonate material and preparation method thereof
  • Polycarbonate material and preparation method thereof
  • Polycarbonate material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The embodiment of the invention discloses a preparation method of a polycarbonate material, comprising:

[0024] Copolymerize carbon dioxide and epoxy compounds containing long-chain alkane substituents under the action of a catalyst to obtain polycarbonate materials.

[0025] This application uses carbon dioxide and epoxy compounds containing long-chain alkane substituents as raw materials to synthesize polycarbonate materials under the action of catalysts. The polycarbonate material prepared by the present application has crystallinity, and with the continuous increase of the side chain length of the epoxy compound, the crystallization ability of the polymer is continuously enhanced.

[0026] In the process of preparing polycarbonate materials in the present application, the catalyst is selected from the first catalytic system of tetradentate Schiff base cobalt complex and cocatalyst, the second catalytic system of porphyrin cobalt and cocatalyst, and the second catal...

Embodiment 1 4

[0042] Embodiment 1 tetradentate Schiff base cobalt complex (SalanCo III Cl) Preparation of catalyst

[0043] Step a) Add 3,5-di-tert-butyl salicylaldehyde (34.85g, 0.1mol) and 200mL ethanol successively in a 500mL three-necked flask equipped with magnetic stirring, reflux condenser and constant pressure dropping funnel, and heat to 60 At about ℃, stir to dissolve it completely; dissolve 1,2-cyclohexanediamine (5.7g, 0.05mol) in 40mL ethanol, slowly add dropwise to the ethanol solution of salicylaldehyde, after the dropwise addition, heat to reflux for 6h , cooled to room temperature, and left overnight. The resulting mixture was filtered to obtain a yellow solid, which was then dried under vacuum at 40°C to obtain the Salen ligand.

[0044] Step b) Under argon protection, add Salen ligand (3.65 g, 6.67 mmol) and 25 mL of refined dichloromethane into a 250 mL three-neck flask equipped with a constant pressure dropping funnel and magnetic stirring, and stir to dissolve it. A...

Embodiment 2 4

[0048] The preparation of embodiment 2 tetraphenylporphyrin cobalt

[0049] Step a) Add 800mL of refined methylene chloride, benzaldehyde (2.2g, 13mmol) and pyrrole (0.93mL, 13mmol) successively to a 1L three-necked flask equipped with magnetic stirring and protected by argon, react at room temperature, and stir to make it complete dissolve. Trifluoroacetic acid (0.93 mL, 4 mmol) was slowly added dropwise to the above solution, and after the dropwise addition was completed, it was reacted for 1 h to obtain a reaction solution. Dichlorodicyanobenzoquinone (1.82 g, 8 mmol) was added to the reaction liquid, and the reaction was continued for 1 h, then filtered, and the solvent was spun off. The crude product was chromatographed on a neutral alumina column (eluent: petroleum ether / dichloromethane) to obtain a pure purple solid.

[0050] Step b) Under the protection of argon, add the product of the previous step (6.12g, 10mmol) into a dry 1L three-necked flask, add 500mL N, N-dim...

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a crystallizable polycarbonate material. The preparation method comprises the steps of performing copolymerization for carbon dioxide and an epoxy compound containing long-chain alkane substituent groups under a catalyst, so as to obtain the polycarbonate material. The catalyst used by the method is good in structure control ability, so that the polycarbonate material has a relatively high head-to-tail structure; the substituent groups of the epoxy compound is relatively long in alkyl chain, so that crystal is formed easily; in such a way, the polycarbonate material prepared by the method disclosed by the invention has crystallinity; on the other hand, by the method disclosed by the invention, the polycarbonate material can be prepared by only performing copolymerization for the carbon dioxide and the epoxy compound under the catalyst, and the epoxy compound is unnecessary to be separated or modified, so that the preparation method of the polycarbonate material is simple.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a polycarbonate material and a preparation method thereof. Background technique [0002] Carbon dioxide is a kind of greenhouse gas, and it is also a kind of abundant and cheap carbon resource, which has attracted widespread attention. The chemical fixation of carbon dioxide is an important research field of green chemistry. Among them, the copolymerization of carbon dioxide and epoxy compounds to prepare biodegradable polycarbonate is an effective way to chemically fix carbon dioxide. [0003] At present, there have been many patent reports on the preparation of polycarbonate by copolymerization of carbon dioxide and alkylene oxide at home and abroad, such as the US patents US3585168, US3900424, and US3953383 published by Professor Inoue Shohei of Japan. The catalyst system prepares polycarbonate, polyurethane and polyether with a number average molecular weight above 20 kg / mo...

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): C08G64/34
CPCC08G64/34
Inventor 郭洪辰秦玉升王献红周庆海高凤翔王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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