Imine-Based Ligand Complex Catalyst for Cyclic Olefin Polymerization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current catalysts for polymerizing cyclic olefin-based monomers, such as norbornene, require separate addition of expensive cocatalysts and phosphine compounds, leading to poor industrial usefulness and inefficiency, with no reported improvements using metal halides bonded to imine-based ligands.
Innovation Solution
A complex catalyst system featuring imine-based ligands bonded to palladium or cobalt metal halides is developed, which enables high activity in polymerizing cyclic olefin-based monomers, eliminating the need for separate cocatalysts and improving polymerization performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional catalyst complexes containing phosphine compounds and cocatalysts are used for polymerizing cyclic olefin-based monomers, then polymerization can be achieved, but the process requires separate addition of expensive cocatalysts and phosphine compounds, leading to poor industrial usefulness and excessive cost
Solution Approach 1:
The patent combines the catalyst precursor and cocatalyst into a single integrated complex catalyst system. The imine-based ligand coordinates with the metal halide to form a pre-assembled complex that contains both catalytic components, eliminating the need for separate addition steps and reducing process complexity while maintaining catalytic activity.
Solution Approach 2:
The catalyst precursor is pre-prepared with the imine-based ligand and metal halide in the correct stoichiometric ratio and coordination geometry before use. This preliminary assembly of the catalytic components eliminates the need for separate cocatalyst addition during the polymerization process, improving ease of manufacture and industrial usefulness.
2Ease of manufacture
If traditional catalyst systems with separate cocatalysts are used, then polymerization activity can be maintained, but expensive cocatalysts are excessively used, increasing costs and reducing industrial applicability
Solution Approach 1:
The imine-based ligand and metal halide are merged into a single complex catalyst structure where the ligand acts as both a stabilizing agent and a component that activates the metal center. This integration eliminates the need for separate cocatalyst addition and reduces overall catalyst consumption, improving cost efficiency and industrial applicability.
3Productivity
If no ligand modification is performed on metal catalysts, then the catalyst structure remains simple, but polymerization performance and activity are not improved
Solution Approach 1:
The imine-based ligand introduces specific functional groups and electronic properties at the local coordination site of the metal center. This localized modification of the catalyst structure around the active metal site enhances polymerization activity without requiring complex changes to the overall catalyst system, achieving improved productivity with controlled structural complexity.
Solution Approach 2:
The complex catalyst is formed by combining the metal halide with the imine-based ligand to create a composite catalytic system. This composite structure integrates the electronic properties of the ligand with the catalytic activity of the metal center, enhancing overall polymerization performance while maintaining a manageable catalyst structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The catalyst system achieves high activity and efficiency in polymerizing cyclic olefin-based monomers, reducing costs and improving industrial applicability by integrating the imine-based ligands directly with metal halides, thereby enhancing polymerization outcomes.
Implementation Method 1
a complex in which a metal halide is bonded to an imine-based ligand
Implementation Method 2
performing addition polymerization of a cyclic olefin-based monomer in the presence of the catalyst
Data Source
AI summary
Proposed are a complex catalyst containing an imine-based ligand for polymerizing a cyclic olefin-based monomer and a method of preparing a cyclic olefin-based polymer using the same. More particularly, proposed are a complex catalyst containing an imine-based ligand for polymerizing a cyclic olefin-based monomer, which can provide the complex catalyst containing the imine-base ligand having high activity in polymerizing the cyclic olefin-based monomer and can prepare a cyclic olefin-based polymer with high activity by polymerizing the cyclic olefin-based monomer in the presence of the complex catalyst containing the imine-based ligand, and a method of preparing a cyclic olefin-based polymer using the same.