ADAMS Copolymers for Reliable Amine Functional Polymerization

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Solution Overview

Problem

Existing methods for synthesizing and polymerizing styrenic monomers with nitrogen-containing groups pendant to the phenyl ring face challenges in reliability and propagation issues, leading to the need for alternative functional monomers that are easier to manufacture and polymerize.

Innovation Solution

The development of amine-derivatized alpha-methyl styrene (ADAMS) monomers, which are polymerized via radical and controlled radical polymerization to form copolymers with other monomers, such as acrylates and methacrylates, providing nitrogen-containing functionality without being pendant to the phenyl ring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If styrenic monomers with nitrogen-containing groups pendant to the phenyl ring are synthesized and polymerized, then nitrogen-containing functional polymers are obtained, but propagation issues and unreliable synthesis occur

Engineering Contradiction:

Improvesynthesis reliabilityVSAvoidpolymerization propagation

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The nitrogen-containing amine group is extracted from the styrenic monomer structure and placed on a separate comonomer (such as acrylic acid, methacrylic acid, or their derivatives). This separation eliminates the propagation issues associated with amine-functionalized styrenic monomers while still achieving nitrogen-containing functional polymers through copolymerization.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent creates composite copolymer systems combining non-functional styrenic monomers (or other vinyl monomers) with amine-containing comonomers. This composite approach allows each component to perform its optimal function: the styrenic monomer provides reliable polymerization and backbone structure, while the amine comonomer introduces the desired nitrogen functionality without causing propagation problems.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If amine groups are added via post-polymerization chemistry, then propagation issues are avoided, but different issues arise and manufacturing complexity increases

Engineering Contradiction:

Improvepolymerization propagationVSAvoidpost-polymerization chemistry

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

Instead of adding amine groups after polymerization, the patent incorporates amine-containing comonomers directly into the polymerization reaction mixture before polymerization begins. This preliminary incorporation of functional groups eliminates the need for separate post-polymerization modification steps, simplifying the overall manufacturing process while avoiding propagation issues.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent merges the polymerization step with the functionalization step by using amine-containing comonomers that participate directly in the copolymerization reaction. This consolidation of steps eliminates the separate post-polymerization chemistry process, reducing manufacturing complexity while maintaining reliable polymerization propagation.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of manufacture

If unconventional pre-polymerization functionalization methods are developed, then propagation is enhanced, but manufacturing complexity may increase

Engineering Contradiction:

Improvepolymerization propagationVSAvoidmonomer structure

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent employs common, well-established comonomers (acrylic acid, methacrylic acid, and their amine derivatives) that are universally available and well-understood in polymer chemistry. These comonomers serve multiple functions: they provide nitrogen-containing functionality, participate reliably in free radical copolymerization, and can be obtained through standard chemical synthesis routes, avoiding the need for complex specialized monomer structures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 functional copolymers with improved propagation in polymerization reactions, offering a range of applications including adhesives, lithium-ion battery additives, and industrial coatings.

Implementation Method 1

polymerized via radical and controlled radical polymerization to form copolymers with other monomers

Methodology Applied

Scientific EffectRadical polymerization:

Data Source

PatentUS20260035493A1Amine containing copolymers via radical polymerization and methods of use thereof

Publication Date: 2026.02.05 INFINEUM INT LTD

AI summary

Disclosed herein are amine containing copolymer compositions based on free radical and controlled radical polymerization of monomer compositions including an amine-derivatized alpha-methyl styrene (ADAMS) monomer according to structure (I):with k, R, R1, and R2 defined herein with one or more monomers selected from the group consisting of optionally substituted acrylates, methacrylates, acrylamides, methacrylamides, acrylonitriles, methacrylonitriles, vinyl ethers, N-vinyl amides, or combinations thereof. Further disclosed herein are methods of making and methods for using such copolymer compositions.