Fluorinated Ether Surface Layer for Abrasion and Light Resistance
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Solution Overview
Problem
Fluorinated ether compounds with poly(oxyperfluoroalkylene) chains lack sufficient light resistance and chemical resistance due to ether bond cleavage, and existing surface treatments for touch panels require improved abrasion resistance.
Innovation Solution
A fluorinated ether compound with a specific chemical structure, including a perfluoroalkyl group, linear fluoroalkylene groups, and hydrolyzable silyl groups, forming a surface layer that enhances water/oil repellency, fingerprint stain removability, abrasion resistance, light resistance, and chemical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluorinated ether compound with an etheric oxygen atom in the linking group is used, then water/oil repellency and fingerprint stain removability are improved, but light resistance and chemical resistance deteriorate due to ether bond cleavage
Solution Approach 1:
The patent removes the etheric oxygen atom from the linking group between the poly(oxyperfluoroalkylene) chain and the hydrolyzable silyl group. By extracting this vulnerable ether bond, the compound achieves both improved durability (light and chemical resistance) while maintaining the desired surface properties (water/oil repellency and fingerprint stain removability) through the fluorinated structure.
2Reliability
If existing fluorinated ether compounds are used for surface treatment, then initial water/oil repellency is achieved, but abrasion resistance is insufficient
Solution Approach 1:
The patent creates a composite structure by combining a poly(oxyperfluoroalkylene) chain with a hydrolyzable silyl group directly linked without an etheric oxygen atom. This composite molecular structure allows the fluorinated portion to provide water/oil repellency while the silyl group forms a durable, abrasion-resistant surface layer through hydrolysis and condensation reactions.
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 forms a surface layer with improved initial water/oil repellency, fingerprint stain removability, abrasion resistance, light resistance, and chemical resistance, suitable for applications on touch panels and other surfaces.
Implementation Method 1
A fluorinated ether compound having a poly(oxyperfluoroalkylene) chain is capable of forming on a surface of a substrate a surface layer
Implementation Method 2
B1 is a group represented by the following formula 1-1: —Rf2—[C(O)N(R1)]p-Q1-C(R2)[-Q2-SiR3nL3-n]2 wherein L is a hydrolyzable group
Data Source
AI summary
A fluorinated ether compound represented by A-O—(Rf1O)m—Rf2—[C(O)N(R1)]p-Q1-C(R2)[-Q2-SiR3nL3-n]2, wherein A is a C1-20 perfluoroalkyl group, Rf1 is a linear fluoroalkylene group, m is an integer of from 2 to 500, Rf2 is a linear fluoroalkylene group, R1 is a hydrogen atom or an alkyl group, p is 0 or 1, Q1 is a single bond or an alkylene group, R2 is a hydrogen atom, a monovalent hydrocarbon group or the like, Q2 is an alkylene group, R3 is a hydrogen atom or a monovalent hydrocarbon group, L is a hydrolyzable group, and n is an integer of from 0 to 2 is provided. A fluorinated ether composition and a coating liquid capable of forming a surface layer excellent in initial water/oil repellency, fingerprint stain removability, abrasion resistance, light resistance and chemical resistance, an article having a surface layer, and a method for producing it are also provided.