Poly(meth)acrylate Amide Acetals for VOC-Free Rapid Curing

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Solution Overview

Problem

Current poly(meth)acrylate compositions face challenges in achieving rapid drying and curing without VOC emissions, and there is a need for novel polymerization processes that can produce polymers with specific structural properties for various industrial applications.

Innovation Solution

The development of poly(meth)acrylate amide acetals through polymerization, involving specific monomers and reaction processes such as free radical polymerization and group transfer polymerization, to create polymers with controlled molecular weights and structures, which can be used to form novel coatings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional poly(meth)acrylate compositions are used, then VOC emissions occur, but rapid drying and curing cannot be achieved without harmful emissions

Engineering Contradiction:

Improvedrying and curing speedVSAvoidVOC emissions

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by incorporating amide acetal groups into the poly(meth)acrylate backbone, creating a novel polymer structure that enables rapid curing without VOC emissions. This parameter change in molecular structure allows the material to achieve both fast drying/curing and zero VOC emission simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite polymer structure combining poly(meth)acrylate chains with amide acetal crosslinking groups. This composite molecular architecture provides both the rapid curing capability from the crosslinking mechanism and the VOC-free property from the closed-cell structure, resolving the contradiction between speed and environmental harm

Inventive Principle:

Principle #40Composite materials

2Manufacturing precision

If novel polymerization processes are developed to produce polymers with specific structural properties, then controlled molecular weights and structures are achieved, but the process complexity increases

Engineering Contradiction:

Improvecontrolled molecular weight and structureVSAvoidpolymerization process complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent incorporates the amide acetal groups into the polymer backbone during the initial polymerization step rather than adding them later as crosslinking agents. This preliminary action simplifies the overall process by combining structure formation and crosslinking into a single operation, achieving controlled molecular weight and structure without proportionally increasing process complexity

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The amide acetal groups serve as an intermediary element that simultaneously provides crosslinking functionality and structural control during polymerization. This intermediary mechanism allows precise control over molecular weight and structure while using a relatively simple polymerization process, bridging the gap between manufacturing precision and process complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

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 polymers with desired structural properties, such as random or designed polymer structures, and achieves rapid curing without VOC emissions, making them suitable for industrial applications like automotive coatings.

Implementation Method 1

The polymers of the present invention can be made by polymer formation processes including free radical polymerization and group transfer polymerization

Methodology Applied

Scientific EffectFree radical polymerization: Photopolymerisation

Implementation Method 2

The polymers of the present invention can be made by polymer formation processes including free radical polymerization and group transfer polymerization

Methodology Applied

Scientific EffectGroup transfer polymerization: Photopolymerisation