Group 10 Metal Complex Catalyst for High-Temperature Olefin Copolymerization
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Solution Overview
Problem
The challenge lies in producing olefin-based polymers with high catalytic activity and heat resistance, particularly for copolymerizing nonpolar olefins with polar group-containing allyl monomers, as existing catalysts suffer from inadequate catalytic activity and heat stability, leading to low polymer productivity at elevated temperatures.
Innovation Solution
A novel metal complex catalyst of group 10, represented by a specific formula, is used for copolymerizing nonpolar olefins like ethylene and propylene with polar group-containing olefins, such as allyl monomers, to produce olefin-based polymers with high catalytic activity and heat resistance, enabling their application in various fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the reaction temperature is raised to increase catalytic activity, then the reaction rate increases exponentially, but the metal complex catalyst degrades and deactivates, reducing polymer productivity per unit catalyst
Solution Approach 1:
The patent modifies the chemical structure of the metal complex catalyst by introducing specific ligands and substituents that enhance thermal stability. This allows the catalyst to maintain its activity at elevated temperatures (100-200°C) without degrading, thus resolving the contradiction between reaction rate and catalyst stability
Solution Approach 2:
The patent creates a composite catalyst system combining metal complexes with specially designed organic ligands containing polar groups. This composite structure provides both high catalytic activity and enhanced heat resistance, enabling the catalyst to function effectively at high temperatures without deactivation
2Adaptability or versatility
If coordination polymerization is used to synthesize copolymers of polar group-containing allyl monomers, then polymers with functionality not obtainable by radical polymerization are produced, but catalyst cost increases and catalytic activity and polymer productivity per unit catalyst are inadequate
Solution Approach 1:
The patent optimizes the metal complex catalyst structure by varying ligand types, metal centers, and stoichiometric ratios to achieve both high functionality retention and improved catalytic activity. This allows coordination polymerization to produce functional polymers while increasing productivity per unit catalyst
Solution Approach 2:
The patent develops catalyst systems that replicate the successful structural features of known stable catalysts while incorporating modifications to enhance activity for polar monomers. This approach maintains the stability advantages of established catalyst designs while improving their productivity for functional polymer synthesis
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
This approach allows for the production of olefin-based polymers with high catalytic activity and heat resistance, maintaining productivity and activity even at elevated temperatures, thus reducing production costs and enhancing their versatility.
Implementation Method 1
coordination polymerization of ethylene and a polar group-containing allyl monomer using a metal complex catalyst of group 10 of the periodic table
Implementation Method 2
a novel metal complex of group 10 of the periodic table having high heat resistance... maintaining productivity and activity even at elevated temperatures
Data Source
Figure 1
AI summary
The present invention relates to a catalyst for olefin polymerization that contains a metal complex represented by general formula (C1) and a method for producing polyethylene, a copolymer of ethylene and an olefin having a polar group represented by general formula (1), or a copolymer of ethylene, an olefin having a polar group represented by general formula (1) and another monomer, using the aforementioned metal complex as a polymerization catalyst. (The symbols in the formula are as described in the description.) The metal complex catalyst of the present invention has high heat resistance and catalytic activity. As a result of using this catalyst, olefin-based polymers having a polar group can be produced efficiently that can be used in various applications by copolymerizing a nonpolar olefin (ethylene) and an olefin having a polar group at high temperatures.