Polysiloxane-Modified Polyhydroxyurethane for Heat-Resistant Surfaces
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Solution Overview
Problem
Polyhydroxy polyurethane resins that use carbon dioxide as a production raw material are inferior in performance and lack the necessary characteristics for industrial applications, such as heat resistance, chemical resistance, and abrasion resistance, and are not environmentally responsive, particularly in thermal recording media, imitation leathers, skin materials, and weather strips.
Innovation Solution
A polysiloxane-modified polyhydroxy polyurethane resin is developed through a reaction between a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound, which provides improved lubricity, abrasion resistance, chemical resistance, non-tackiness, and antistatic properties, and can incorporate carbon dioxide as a raw material, forming a heat-resistant protective layer, imitation leather, skin material top coat, and weather strip surface treatment layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polyhydroxy polyurethane resins made from carbon dioxide are used to replace fossil-based plastics, then environmental responsiveness is improved, but performance characteristics (heat resistance, chemical resistance, abrasion resistance) deteriorate
Solution Approach 1:
The patent creates a composite material by modifying polyhydroxy polyurethane resin with polysiloxane segments. The polysiloxane modification introduces siloxane bonds and aromatic structures into the polymer chain, combining the environmental benefits of CO2-based polyurethane with the superior heat resistance, chemical resistance, and abrasion resistance of polysiloxane. This composite structure resolves the contradiction by integrating two material systems with complementary properties.
Solution Approach 2:
The patent changes the chemical structure parameters of the polyhydroxy polyurethane resin by incorporating polysiloxane segments with specific molecular weights and structures. This parameter change transforms the resin from having insufficient performance characteristics to exhibiting enhanced heat resistance, chemical resistance, and abrasion resistance while maintaining the CO2-based environmental advantage.
2Reliability
If conventional fossil-based polyurethane resins are used, then performance characteristics (heat resistance, chemical resistance, abrasion resistance) are improved, but environmental responsiveness deteriorates
Solution Approach 1:
The patent changes the raw material source parameter from fossil-based to CO2-based while maintaining performance through polysiloxane modification. This parameter change in the carbon source, combined with structural modification, achieves both environmental responsiveness and superior performance characteristics.
Solution Approach 2:
The patent creates a composite material system that combines CO2-based polyhydroxy polyurethane with polysiloxane segments, replacing fossil-based resources with sustainable CO2 while achieving comparable or superior performance to conventional fossil-based polyurethanes through the synergistic effects of the composite structure.
3Reliability
If polysiloxane segments are incorporated into polyhydroxy polyurethane resin, then heat resistance and abrasion resistance are improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses preliminarily prepared polysiloxane compounds with predetermined molecular structures and weights as starting materials. This preliminary preparation of well-defined polysiloxane building blocks simplifies the overall manufacturing process by avoiding the need to synthesize complex polysiloxane structures during the resin production, thereby reducing manufacturing complexity while achieving the desired heat resistance and abrasion resistance.
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 polysiloxane-modified polyhydroxy polyurethane resin enhances the performance of thermal recording media, imitation leathers, skin materials, and weather strips with improved heat resistance, lubricity, and environmental responsiveness, while contributing to carbon dioxide reduction and replacing conventional fossil-based plastics.
Implementation Method 1
A polysiloxane-modified polyhydroxy polyurethane resin, which is derived from a reaction between a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound
Implementation Method 2
the resin can use carbon dioxide as its production raw material and can hence bring about reduction effect on carbon dioxide
Data Source
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Figure 3
AI summary
Disclosed are a polysiloxane-modified polyhydroxy polyurethane resin derived from a reaction between a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound, and its production process; and a resin composition, thermal recording medium, imitation leather, thermoplastic polyolefinresinskinmaterial, weatherstripmaterial, and weather strip, all of which make use of the resin.