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

Intramolecular trifunctional Lewis acid-base pair catalyst, cyclic topology pmmbl polymer and preparation method and application

A technology of Lewis acid-base pair and trifunctional group, which is applied in the field of PMMBL polymer with ring topology structure and its preparation, can solve the problems such as the inability to prepare PMMBL polymer, and achieve the effects of suitable industrial production, small hydrodynamic volume, and simple operation

Active Publication Date: 2022-05-31
JILIN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PMMBL polymer prepared by the existing catalyst has a linear topology, and cannot prepare a pure ring topology PMMBL polymer

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
  • Intramolecular trifunctional Lewis acid-base pair catalyst, cyclic topology pmmbl polymer and preparation method and application
  • Intramolecular trifunctional Lewis acid-base pair catalyst, cyclic topology pmmbl polymer and preparation method and application
  • Intramolecular trifunctional Lewis acid-base pair catalyst, cyclic topology pmmbl polymer and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0071]

[0075]

[0077]

[0086]

[0096]

[0097] In the formula IV, n is an integer greater than 1, preferably 1000-4000.

Embodiment 1

Embodiment 2

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 the technical field of catalysts, in particular to intramolecular trifunctional Lewis acid-base pair catalysts, preparation methods and applications, ring topology PMMBL polymers, preparation methods and applications. The intramolecular trifunctional Lewis acid-base pair catalyst provided by the present invention has any one or several structures shown in formulas I to III. The catalyst provided by the present invention adopts the chain growth mechanism of "bimolecular synergy". Two Lewis acid sites of B and one Lewis base site of P of the catalyst simultaneously exist in the same molecular structure through covalent bonding and acidic The application of the weaker B-site Lewis acid is favorable for the ω-end of one polymer chain to attack the α-terminus of the other chain, so that the catalyst structure leaves and the two polymer chains connect end-to-end to form a ring to prepare a high initial heat Degradation temperature and narrow thermal degradation temperature window for ring topology PMMBL polymers.

Description

Intramolecular trifunctional Lewis acid-base pair catalyst, cyclic topology PMMBL polymer Compound, preparation method and application technical field The present invention relates to catalyst technical field, be specifically related to intramolecular trifunctional Lewis acid-base pair catalyst, ring PMMBL polymer with topological structure and preparation method and application. Background technique In 2010, the Lewis acid-base pair catalyzed polymerization (LP) of intermolecular interaction was reported for the first time, that is, by collocation A suitable Lewis acid (LA) and a Lewis base (LB) are matched in pairs, and the two act synergistically to activate the monomer and carry out polymer chain growth. Procedure. Lewis acid-base pair catalysts with intermolecular interactions not only enable various polar vinyl monomers to be active and controllable It can also be used for the ring-opening polymerization of lactones, the ring-opening alternating copolymeriza...

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): C08G63/84C08G63/08C07F9/6596C07F9/50
CPCC08G63/84C08G63/823C08G63/08C07F9/6596C07F9/5022C07F9/5068Y02P20/584
Inventor 张越涛宋艳娇何江华
Owner JILIN UNIV
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