Fluorinated Ether Coating for Touch Panel Light Resistance
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Solution Overview
Problem
Fluorinated ether compounds used for surface treatment agents on touch panels and similar surfaces excel in fingerprint stain removability and abrasion resistance but lack sufficient light resistance, necessitating a compound that maintains or exceeds these properties while enhancing light resistance.
Innovation Solution
A fluorinated ether compound with a specific chemical structure, including a C1-20 perfluoroalkyl group and fluoroalkylene units, is developed to form a surface layer with improved light resistance while maintaining fingerprint stain removability and abrasion resistance, utilizing a combination of carbon and silicon atom branches for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluorinated ether compounds with poly(oxyperfluoroalkylene) chains are used for surface treatment, then fingerprint stain removability and abrasion resistance are improved, but light resistance is insufficient
Solution Approach 1:
The patent combines fluorinated ether compounds with silane-modified groups to create a composite surface treatment agent. The silane component forms a crosslinked network structure that provides enhanced light resistance while the fluorinated ether portion maintains fingerprint stain removability and abrasion resistance properties.
Solution Approach 2:
The invention introduces different functional groups at specific positions within the molecule - the fluorinated ether chain provides lubricity and repellency at the surface, while silane groups at terminal positions provide light resistance through crosslinking, achieving local optimization of different properties.
2Ease of operation
If surface layers are designed for high lubricity and water/oil repellency, then fingerprint stain removability improves, but light resistance deteriorates
Solution Approach 1:
The surface treatment agent combines fluorinated ether compounds with silane-modified groups to create a composite material that simultaneously achieves fingerprint stain removability through the fluorinated ether portion and light resistance through the silane crosslinked network.
Solution Approach 2:
The patent modifies the chemical structure by introducing silane groups with specific functional characteristics that change the material's response to light exposure, thereby improving light resistance while preserving the low surface energy properties needed for fingerprint stain removability.
Data Source
AI summary
To provide a fluorinated ether compound capable of forming a surface layer excellent in fingerprint stain removability and abrasion resistance as before and more excellent in light resistance than ever.A fluorinated ether compound represented by A1—O—(Rf1O)m—A2, wherein A1 is a perfluoroalkyl group or the like, A2 is —Q1[—C(R11)b(R12)3−b]a or the like, Rf1 is a fluoroalkylene group, m is from 2 to 500, Q1 is a a+1 valent organic group, R11 is —Q2—Si(R21)c(R22)d(R23)e, R12 is a hydrogen atom, a halogen atom or the like, a is an integer of from 1 to 3, b is 2 or 3, Q2 is a single bond or a bivalent organic group, R21 is —Q3—Si(R31)3−g(R32)g, R22 is an alkyl group, R23 is a hydrolyzable group or a hydroxy group, c, d and e are from 0 to 3, c+d+e is 3, c in at last one R11 among a plurality of R11 is 2 or 3, Q3 is a bivalent organic group, R31 is an alkyl group, R32 is a hydrolyzable group or a hydroxy group, and g is from 1 to 3.