Self-crosslinkable polysiloxane-modified polyhydroxy polyurethane resin, process for producing said resin, resin material comprising said resin, and artificial leather produced utilizing said resin
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Solution Overview
Problem
Polyhydroxy polyurethane resins, which utilize carbon dioxide as a production raw material, are inferior in performance compared to traditional polyurethane-based resins, limiting their industrial applications and environmental sustainability, particularly in imitation leather products where they lack heat resistance, chemical resistance, and abrasion resistance.
Innovation Solution
A self-crosslinking, polysiloxane-modified polyhydroxy polyurethane resin is developed, characterized by masked isocyanate groups derived from a reaction of a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound, with polysiloxane segments, allowing for improved heat resistance, chemical resistance, and abrasion resistance through self-crosslinking upon heat treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polyhydroxy polyurethane resins using carbon dioxide as raw material are employed, then environmental sustainability is improved, but heat resistance, chemical resistance, and abrasion resistance deteriorate
Solution Approach 1:
The invention creates a composite resin system by combining polyhydroxy polyurethane resin (containing carbon dioxide) with polysiloxane-modified components and crosslinking agents. This composite structure integrates the environmental benefits of CO2-based resins with the enhanced performance of polysiloxane modifications, achieving both sustainability and improved heat/chemical/abrasion resistance through synergistic material combination
Solution Approach 2:
The invention modifies the chemical structure and physical properties of the polyhydroxy polyurethane resin through polysiloxane grafting and crosslinking. These parameter changes include introducing siloxane segments with thermal stability, creating crosslinked networks for chemical resistance, and adjusting molecular weight and composition to achieve balanced abrasion resistance while maintaining CO2 content for environmental sustainability
2Reliability
If traditional polyurethane-based resins are used, then heat resistance, chemical resistance, and abrasion resistance are improved, but environmental sustainability deteriorates
Solution Approach 1:
The invention recovers and utilizes carbon dioxide (a harmful waste product) as a valuable raw material for resin production. By converting CO2 into polyhydroxy polyurethane resin through chemical reactions with epoxides and polyamines, the process transforms an environmental pollutant into a functional material, simultaneously achieving emission reduction and resin production with improved performance through subsequent polysiloxane modification
3Object-affected harmful factors
If polyhydroxy polyurethane resins are used for imitation leather production, then environmental benefits are achieved, but lubricity and hand feeling deteriorate
Solution Approach 1:
The invention introduces polysiloxane segments at specific locations within the resin structure (as side chains or grafts on the polyhydroxy polyurethane backbone). These localized polysiloxane modifications provide lubricity and improved hand feeling only in the regions where they are incorporated, while the overall CO2-based structure maintains environmental benefits. This local quality enhancement allows the resin to achieve both sustainability and tactile performance
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 self-crosslinking, polysiloxane-modified polyhydroxy polyurethane resin enhances the performance of products in terms of heat resistance, chemical resistance, and abrasion resistance while incorporating carbon dioxide, making them suitable for industrial applications and contributing to environmental conservation by reducing carbon dioxide emissions.
Implementation Method 1
having masked isocyanate groups in a structure of a polysiloxane-modified, polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound and having polysiloxane segments therein
Data Source
AI summary
A problem is to provide, in the field of polyhydroxy polyurethane resins the development of applications of which has not moved ahead by conventional technologies, a self-crosslinking polyhydroxy polyurethane resin, which enables to provide products, such as imitation leathers, excellent in abrasion resistance, chemical resistance, heat resistance and the like, and moreover, which is useful from the viewpoint of a reduction in greenhouse gas, contains carbon dioxide incorporated and fixed therein, and is responsive to environmental conservation. Provided are a self-crosslinking, polysiloxane-modified, polyhydroxy polyurethane resin having masked isocyanate groups in a structure of a polysiloxane-modified, polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound and having polysiloxane segments therein; a production process of the self-crosslinking resin; a resin material containing the self-crosslinking resin; and an imitation leather composed of a base fabric and a resin composition composed of the self-crosslinking resin as its principal component and impregnated in or laminated on the base fabric.