Group 10 Metal Complex Catalyst for Olefin Polymerization
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Solution Overview
Problem
The challenge lies in producing olefin polymers with polar groups, particularly those containing an allyl monomer, which face difficulties due to slow polymer growth and low degree of polymerization, and existing catalysts have limitations in catalytic activity and cost-effectiveness for industrial applications.
Innovation Solution
A novel metal complex of Group 10 elements, such as Ni, Pd, or Pt, is used as a catalyst for copolymerizing nonpolar olefins like ethylene with polar group-containing olefins, including allyl monomers, to enhance catalytic activity and productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If radical polymerization is used for allyl monomers, then polymerization can proceed, but the growth reaction is extremely slow due to degradative chain transfer reaction resulting in low degree of polymerization
Solution Approach 1:
The patent changes the polymerization mechanism from radical to coordination polymerization, fundamentally altering the reaction parameters and pathway. This enables both high polymerization rate and high degree of polymerization by avoiding degradative chain transfer reactions through a different mechanistic approach involving metal complex catalysts
Solution Approach 2:
The patent replaces the radical polymerization mechanism with coordination polymerization using metal complex catalysts. This substitution of the fundamental reaction mechanism eliminates the degradative chain transfer issue while maintaining high productivity and achieving high degree of polymerization
2Ease of manufacture
If Group 10 metal complex catalysts are used for copolymerization of ethylene and polar group-containing allyl monomer, then copolymer can be synthesized, but catalyst cost is high and catalytic activity and polymer productivity per unit catalyst are insufficient
Solution Approach 1:
The patent optimizes catalyst parameters by selecting specific Group 10 metals (Ni or Pd) and designing particular ligand structures with electron-donating groups. This parameter optimization achieves both cost-effectiveness and high catalytic activity, resolving the contradiction between catalyst cost and productivity
Solution Approach 2:
The patent creates composite catalyst systems by combining metal complexes with specifically designed ligand structures containing electron-donating groups. This composite approach enhances catalytic activity and productivity per unit catalyst while maintaining cost-effectiveness for industrial application
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 enables the production of olefin polymers with high catalytic activity and cost-effectiveness, suitable for various applications, by effectively addressing the limitations of existing methods in producing polymers with polar groups.
Implementation Method 1
A novel metal complex of Group 10 elements, such as Ni, Pd, or Pt, is used as a catalyst for copolymerizing nonpolar olefins like ethylene with polar group-containing olefins
Implementation Method 2
coordination copolymerization of ethylene and a polar group-containing allyl monomer using a metal complex catalyst of Group 10 of the Periodic Table
Data Source
AI summary
The present invention provides: a catalyst which has high activity and enables the production of an olefin polymer that has a polar group; and a method for producing the polymer. A catalyst for olefin polymerization, which contains a metal complex represented by general formula (C1); and a method for producing an ethylene (co)polymer, wherein (1) ethylene is polymerized, (2) ethylene and an olefin having a polar group represented by general formula (1) are copolymerized, or (3) ethylene, an olefin having a polar group represented by general formula (1) and another monomer are copolymerized, with use of the above-described catalyst. (In the formulae, the symbols are as defined in the description; and at least one of R6 and R7 represents a 9-fluorenyl analogous group represented by general formula (2).