Fluoro(poly)ether Silane for UV-Resistant Coatings
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Solution Overview
Problem
Existing surface treatment compositions lack durability against ultraviolet rays, necessitating the development of a fluoro(poly)ether group-containing silane compound that enhances UV durability in surface-treating layers.
Innovation Solution
A fluoro(poly)ether group-containing silane compound with specific structural units, including a PFPE moiety with a branched structure and hydrolyzable groups, is formulated to improve UV durability, water-repellency, and chemical resistance in surface-treating layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluorine-containing silane compounds are used for surface treatment, then water-repellency and oil-repellency are improved, but UV durability deteriorates
Solution Approach 1:
The patent changes the chemical structure parameters of the silane compound by introducing a specific fluoro(poly)ether group with branched structure at the terminal position. This structural modification enables the compound to maintain both excellent water/oil repellency and improved UV durability, resolving the contradiction between repellency performance and UV stability
Solution Approach 2:
The patent creates a composite molecular structure combining fluorinated groups (for repellency), polyether chains (for flexibility and UV resistance), and silane moieties (for surface bonding). This composite approach integrates multiple functional components into a single molecule that simultaneously achieves water-repellency, oil-repellency, and UV durability
2Reliability
If surface-treating layers are designed for excellent water-repellency and oil-repellency, then antifouling property is improved, but durability against ultraviolet rays deteriorates
Solution Approach 1:
The patent modifies the molecular parameters by incorporating a fluoro(poly)ether group with specific branching structure, which maintains the low surface energy required for antifouling properties while adding UV absorption and scattering capabilities through the polyether chain structure, thereby improving durability without sacrificing antifouling 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 compound effectively enhances the UV durability, water-repellency, and chemical resistance of surface-treating layers, providing improved performance in preventing fouling and maintaining properties under exposure to UV radiation.
Implementation Method 1
The compound effectively enhances the UV durability, water-repellency, and chemical resistance of surface-treating layers, providing improved performance in preventing fouling and maintaining properties under exposure to UV radiation
Implementation Method 2
Certain fluorine-containing silane compounds are known to be able to provide excellent water-repellency, oil-repellency or antifouling property when used for a surface treatment of a base material
Implementation Method 3
The compound effectively enhances the UV durability, water-repellency, and chemical resistance of surface-treating layers
Data Source
AI summary
A fluoro(poly)ether group-containing silane compound represented by any of the formulae (A1), (A2), (B1), (B2), (C1), or (C2). In the formulae, PFPE is each independently at each occurrence a group represented by the formula: - (OC6F12)a-(OC5F10)b-(OC4F8)c-(OC3XF6)d-(OC2F4)e-(OCF2)f-, and having at least one branched structure. The symbols are as defined in the description.