Cyclic Carbonate Polysiloxane via CO2 Fixation

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Solution Overview

Problem

Conventional 5-membered cyclic carbonate compounds synthesized from fossil-based materials lack the necessary performance characteristics for industrial applications, such as heat resistance, chemical resistance, and abrasion resistance, and do not effectively utilize carbon dioxide as a sustainable resource.

Innovation Solution

A 5-membered cyclic carbonate polysiloxane compound represented by a specific formula is produced by reacting an epoxy-modified polysiloxane compound with carbon dioxide, enhancing its properties and enabling the creation of polysiloxane-modified polyhydroxy polyurethane resins with improved lubricity, chemical resistance, and heat resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional 5-membered cyclic carbonate compounds are synthesized from fossil-based materials, then production is feasible, but the resulting high-molecular compounds are inferior in heat resistance, chemical resistance, and abrasion resistance

Engineering Contradiction:

Improveheat resistance, chemical resistance, abrasion resistanceVSAvoidproduction feasibility

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention changes the chemical structure parameters by introducing polysiloxane units into the cyclic carbonate compound, specifically incorporating Si-O bonds which provide superior heat resistance and chemical resistance while maintaining manufacturability through established polysiloxane synthesis routes

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite molecular structure combining cyclic carbonate units with polysiloxane chains, where the siloxane backbone provides thermal and chemical stability while the carbonate units enable polymerization, achieving enhanced performance properties in the resulting polyhydroxy polyurethane resin

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If 5-membered cyclic carbonate compounds are used as raw materials, then carbon dioxide utilization is achieved, but the performance characteristics are insufficient for industrial applications

Engineering Contradiction:

Improvecarbon dioxide reduction effectVSAvoidperformance characteristics

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The invention modifies the molecular parameters of carbon dioxide-derived cyclic carbonate compounds by attaching polysiloxane chains, transforming them from low-performance monomers into high-performance polymer precursors that meet industrial application requirements while maintaining carbon dioxide utilization

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The polysiloxane unit acts as an intermediary structure that bridges carbon dioxide fixation and high-performance polymer production, enabling the translation of environmental benefit into industrial applicability through enhanced material properties

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If polyhydroxy polyurethane resins are developed for industrial applications, then lubricity and other properties can be improved, but the complexity of synthesis increases

Engineering Contradiction:

Improvelubricity, non-tackiness, antistatic propertiesVSAvoidsynthesis complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention performs preliminary structural design by pre-assembling polysiloxane-cyclic carbonate hybrid units before polymerization, ensuring that desired properties like lubricity and antistatic characteristics are built into the molecular structure rather than requiring complex post-synthesis modifications

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The polysiloxane-cyclic carbonate hybrid structure provides multiple functional benefits simultaneously, including lubricity from siloxane chains, antistatic properties from polar groups, and ease of synthesis through stepwise polymerization, reducing overall process complexity

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

The resulting polysiloxane-modified polyhydroxy polyurethane resin exhibits excellent lubricity, abrasion resistance, chemical resistance, non-tackiness, and heat resistance, while also contributing to carbon dioxide reduction, making it suitable for various industrial applications and environmentally responsive products.

Implementation Method 1

reacting an epoxy-modified polysiloxane compound with carbon dioxide

Methodology Applied

Scientific EffectCarbon dioxide fixation: Chemical Bonding

Implementation Method 2

5-membered cyclic carbonate polysiloxane compound represented by formula (1)

Methodology Applied

Scientific EffectCyclic carbonate formation: Chemical Bonding

Data Source

PatentUS8975420B2Five-membered cyclocarbonate polysiloxane compound and process for preparation of same

Publication Date: 2015.03.10 DAINICHISEIKA COLOR & CHEMICALS MFG CO LTD

AI summary

A 5-membered cyclic carbonate polysiloxane compound is represented by the below-described formula (1), and is produced by a process that reacts an epoxy-modified polysiloxane compound with carbon dioxide.wherein A meansin which R1 means an alkylene group which has from 1 to 12 carbon atoms and may be linked via an element of O, S or N and/or —(C2H4O)b—, R2 means a direct bond or an alkylene group having from 2 to 20 carbon atoms, R2 may be linked to an alicyclic group or aromatic group, b stands for a number of from 1 to 300, and a stands for a number of from 1 to 300.