Self-Crosslinking Polyhydroxy Polyurethane with Polysiloxane Segments
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Solution Overview
Problem
Polyhydroxy polyurethane resins, which utilize carbon dioxide as a raw material, are inferior in performance compared to similar polyurethane-based resins, limiting their industrial applications and environmental benefits, particularly in reducing global warming and resource depletion.
Innovation Solution
A self-crosslinking polysiloxane-modified polyhydroxy polyurethane resin is developed through a reaction of a 5-membered cyclic carbonate polysiloxane compound and an amine compound, incorporating polysiloxane segments and masked isocyanate groups, which undergo self-crosslinking upon heat treatment to enhance heat resistance, chemical resistance, and abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polyhydroxy polyurethane resins are used as raw materials, then environmental benefits are improved by fixing carbon dioxide, but performance characteristics deteriorate compared to conventional polyurethane-based resins
Solution Approach 1:
The invention creates a composite resin system by combining polyhydroxy polyurethane resin (containing fixed CO2) with polysiloxane segments and masked isocyanate groups. This composite structure integrates the environmental benefits of CO2-fixation with the performance characteristics of polysiloxane-modified polyurethane, resolving the contradiction between environmental sustainability and material performance
Solution Approach 2:
The invention modifies the chemical structure parameters of polyhydroxy polyurethane resin by incorporating polysiloxane segments and masked isocyanate groups. These parameter changes transform the resin from a low-performance material into a high-performance self-crosslinking material that maintains CO2-fixation capabilities while achieving conventional polyurethane performance levels
2Reliability
If conventional polyurethane-based resins are used, then performance characteristics are improved, but environmental harm increases due to carbon dioxide emissions
Solution Approach 1:
The invention converts the harmful factor of carbon dioxide emissions into a beneficial feature by using CO2 as a raw material for synthesizing the polyhydroxy polyurethane resin. The CO2 that would normally be emitted as waste is instead incorporated into the resin structure, transforming an environmental problem into a sustainability solution while maintaining performance through polysiloxane modification
3Object-affected harmful factors
If polyhydroxy polyurethane resin is used without modification, then environmental sustainability is improved, but heat resistance and chemical resistance deteriorate
Solution Approach 1:
The invention creates a composite structure integrating polyhydroxy polyurethane resin with polysiloxane segments. The polysiloxane component contributes superior heat resistance and chemical resistance properties, while the polyhydroxy polyurethane backbone maintains the CO2-fixation capability, thus resolving the contradiction between environmental sustainability and thermal/chemical stability
4Object-affected harmful factors
If polyhydroxy polyurethane resin is used without modification, then environmental sustainability is improved, but abrasion resistance deteriorates
Solution Approach 1:
The invention changes the structural parameters of polyhydroxy polyurethane resin by incorporating polysiloxane segments and enabling self-crosslinking through masked isocyanate groups. These parameter changes significantly enhance abrasion resistance while preserving the environmental sustainability benefits of CO2-fixation in the resin structure
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 resin provides improved performance in heat resistance, chemical resistance, and abrasion resistance, while incorporating carbon dioxide, making it suitable for industrial applications and contributing to environmental conservation by reducing carbon dioxide emissions.
Implementation Method 1
masked isocyanate groups, which undergo self-crosslinking upon heat treatment to enhance heat resistance, chemical resistance, and abrasion resistance
Data Source
AI summary
Provided are a self-crosslinking polysiloxane-modified polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate polysiloxane compound represented by the following formula (1) and an amine compound and having polysiloxane segments and masked isocyanate groups in its structure:wherein A meansand its production process. The present invention can provide a polyhydroxy polyurethane resin, the development of applications of which has not moved ahead in the prior art, as a novel self-crosslinking polyhydroxy polyurethane resin that enables to provide products excellent in lubricity, abrasion resistance, chemical resistance, non-tackiness, heat resistance and the like, is useful from the viewpoint of the reduction of warming gas, and is responsive to the environment.