Polymeric Liquid Polysiloxane for Catalyst-Free Rearrangement

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Solution Overview

Problem

Current polyalkoxysiloxane materials lack efficient rearrangement and curing chemistry, often requiring additional catalysts and condensation reagents, which can impact storage stability and introduce corrosive properties.

Innovation Solution

A polymeric liquid polysiloxane material comprising non-organofunctional Q-type siloxane moieties and optionally T-, M-, and D-type functionalities, with specific bonding topologies and stoichiometric ratios, enabling efficient rearrangement and curing reactions without the need for acetic anhydride or transition metal catalysts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional polyalkoxysiloxane materials are used, then storage stability is maintained, but rearrangement and curing reactions require additional catalysts and condensation reagents which introduce corrosive properties

Engineering Contradiction:

Improvestorage stabilityVSAvoidcorrosive properties

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The polysiloxane material contains built-in rearrangement and curing functionality through its molecular structure, eliminating the need for external catalysts and condensation reagents. The material serves itself by performing rearrangement and curing reactions without requiring additional harmful substances.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention extracts and eliminates the need for toxic catalysts and condensation reagents from the system by incorporating all necessary functional groups directly into the polysiloxane structure, thereby removing harmful factors while maintaining functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

2Productivity

If additional catalysts and condensation reagents are used for rearrangement and curing reactions, then reaction efficiency is improved, but storage stability is impacted and corrosive properties are introduced

Engineering Contradiction:

Improvereaction efficiencyVSAvoidstorage stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention merges the rearrangement and curing functionalities directly into the polysiloxane material structure, combining what were previously separate components (material + catalysts + reagents) into a single integrated system that maintains both reactivity and storage stability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The material performs rearrangement and curing reactions autonomously without requiring external catalysts or condensation reagents, achieving high reaction efficiency while preserving storage stability through self-contained functionality.

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If conventional rearrangement and curing chemistry is used, then curing reactions can proceed, but toxic catalysts are required which affect storage stability

Engineering Contradiction:

Improvecuring reaction capabilityVSAvoidtoxic catalysts

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The polysiloxane material contains all necessary functional groups for rearrangement and curing reactions within its own molecular structure, eliminating the need for toxic external catalysts while maintaining full curing capability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention converts the potential harm of requiring toxic catalysts into a benefit by designing a catalyst-free system where the polysiloxane structure itself provides the necessary reactivity, turning a harmful requirement into a non-existent constraint.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

The material facilitates efficient grafting and curing reactions with reduced reaction times and milder conditions, improving storage stability and eliminating the need for toxic catalysts, while forming stable aqueous dispersions and emulsions without surfactants.

Implementation Method 1

The present invention pertains to a polymeric liquid polysiloxane material comprising non-organofunctional Q-type siloxane moieties and optionally mono-organofunctional T-type siloxane moieties, for efficient rearrangement and curing reactions

Methodology Applied

Scientific EffectRearrangement reaction: Chemical Bonding

Implementation Method 2

current polyalkoxysiloxane materials lack efficient rearrangement and curing chemistry, often requiring additional catalysts and condensation reagents

Methodology Applied

Scientific EffectCondensation reaction: Chemical Bonding

Data Source

PatentUS20240294759A1Siloxane-based polymeric materials for efficient rearrangement and curing reactions and with specific degree of polymerization

Publication Date: 2024.09.05 SILOXENE AG

Polymeric Liquid Polysiloxane for Catalyst-Free Rearrangement

Solution Overview

Problem

Innovation Solution

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

Solution Approach 1:

Solution Approach 2:

2Productivity

Solution Approach 1:

Solution Approach 2:

3Ease of manufacture

Solution Approach 1:

Solution Approach 2:

Applied Scientific Principles

Function Achieved in This Case

Implementation Method 1

Implementation Method 2

Data Source

AI summary