Group 10 Metal Complex Catalyst for Polar Allyl Copolymerization

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Solution Overview

Problem

The production of copolymers of allyl monomers with polar groups is hindered by slow polymer growth due to degradative chain transfer reactions, resulting in low molecular weight oligomers, and existing catalysts have limited catalytic activity and high costs, making industrialization challenging.

Innovation Solution

Copolymerizing ethylene with an allyl monomer having a polar group in the presence of a boron compound with boron-hydrogen or boron-carbon bonds using a metal complex of Group 10 of the Periodic Table as a catalyst, which enhances catalytic activity and reduces production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If radical polymerization is used to polymerize allyl monomer having polar group, then polymerization can proceed, but the growth reaction is extremely slow due to degradative chain transfer reaction and only low molecular weight oligomers are obtained

Engineering Contradiction:

Improvepolymer growth rateVSAvoidmolecular weight

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent changes the polymerization mechanism from radical to coordination polymerization using Group 10 metal complex catalysts, fundamentally altering the reaction parameters to eliminate degradative chain transfer and achieve high molecular weight copolymers with controlled growth rates

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces coordination compounds and ligands as intermediaries between the catalyst and monomer, facilitating controlled polymerization through coordination mechanisms that prevent unwanted side reactions while maintaining productive polymerization

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If Group 10 metal complex catalyst is used for coordination copolymerization of ethylene and polar group-containing allyl monomer, then copolymer can be synthesized, but catalytic activity and polymer productivity per unit catalyst are not sufficient

Engineering Contradiction:

Improvecopolymer synthesis capabilityVSAvoidcatalytic activity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent optimizes the local chemical environment of the catalyst by selecting specific ligands with appropriate electronic and steric properties, creating localized active sites with enhanced catalytic activity while maintaining the overall coordination polymerization mechanism

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent creates composite catalytic systems by combining Group 10 metal complexes with specifically designed coordination compounds and ligands, forming hybrid catalyst structures that synergistically improve both activity and selectivity for copolymerization

Inventive Principle:

Principle #40Composite materials

3Reliability

If existing Group 10 metal complex catalysts are used, then copolymerization can occur, but catalyst cost is high and challenges remain toward industrialization

Engineering Contradiction:

Improvecopolymerization capabilityVSAvoidindustrialization feasibility

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent develops catalyst systems that can achieve high productivity with lower catalyst loading, effectively making the catalyst more economical for industrial applications by reducing the amount of expensive metal complex required per unit of polymer produced

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 method enables the production of copolymers with high catalytic activity and reduced production costs, overcoming the limitations of existing catalysts and achieving suitable molecular weights for various applications.

Implementation Method 1

using a metal complex of Group 10 of the Periodic Table as a catalyst

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

coordination copolymerization of ethylene and a polar group-containing allyl monomer using a metal complex catalyst

Methodology Applied

Scientific EffectCoordination chemistry:

Implementation Method 3

a boron compound having one or more boron-hydrogen bonds (B-H) or boron-carbon bonds (B-C)

Methodology Applied

Scientific EffectChemical bonding: Chemical Bonding

Data Source

PatentEP3786196B1Method for producing copolymer of allyl monomer having polar group

Publication Date: 2024.05.08 RESONAC CORP

AI summary

The present invention pertains to a method for producing a copolymer of ethylene and an allyl monomer having a polar group represented by general formula (1), or a copolymer of ethylene, an allyl monomer having a polar group represented by general formula (1), and other monomers, wherein the copolymer is produced in the presence of a boron compound having a boron-hydrogen bond or a boron-carbon bond (for example, a compound represented by general formula (2)) by using a metal complex represented by general formula (C1) as a polymerization catalyst (the symbols in the formulas are as described in the description). According to the present invention, a copolymer of ethylene and an allyl monomer can be efficiently produced with high catalytic activity, wherein the copolymer has a polar group and can be used in various applications.