Fluorine-Containing Ether Compound for Light-Stable Surface Treatment
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Solution Overview
Problem
There is a need for a fluorine-containing ether compound that exhibits excellent light fastness, as existing compounds used in surface treatment agents for applications like touch panels and spectacle lenses do not maintain water/oil repellency and fingerprint dirt removability effectively over time, especially when exposed to light.
Innovation Solution
A fluorine-containing ether compound represented by the general formula (A) with a polyfluoropolyether chain and a hydrolyzable silyl group, which forms a surface layer with olefin structures that trap radicals and enhance chemical bonding, thereby improving light stability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluorine-containing ether compound with a perfluoropolyether chain and hydrolyzable silyl group is used as a surface treatment agent, then water/oil repellency and fingerprint dirt removability are improved, but light fastness deteriorates
Solution Approach 1:
The patent changes the chemical structure parameters of the fluorine-containing ether compound by introducing specific olefin structures (vinyl, allyl, or propargyl groups) at predetermined positions in the molecule. This structural modification enables radical trapping capability while maintaining the original water/oil repellency and fingerprint dirt removability properties, thereby improving light fastness without sacrificing the original functional benefits
Solution Approach 2:
The patent creates a composite molecular structure that combines the perfluoropolyether chain (providing water/oil repellency and fingerprint dirt removability), hydrolyzable silyl group (providing adhesion to substrate), and olefin structure (providing radical trapping for light stability). This composite approach integrates multiple functional elements within a single molecule to achieve all desired properties simultaneously
2Force
If the surface layer is repeatedly rubbed with a finger to maintain friction resistance, then water/oil repellency is maintained, but light exposure causes deterioration of performance over time
Solution Approach 1:
The patent converts the harmful effect of light (which generates radicals that degrade the surface layer) into a beneficial effect by incorporating olefin structures that actively trap these radicals. The radicals generated by light exposure are now captured by the olefin groups, preventing them from attacking and degrading the functional groups responsible for water/oil repellency and fingerprint dirt removability, thereby improving performance stability under light exposure
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 provides a surface layer with enhanced light fastness, friction resistance, and fingerprint removability, maintaining water/oil repellency and chemical resistance, even after repeated use and exposure to light, by forming a stable and durable film on substrates.
Implementation Method 1
olefin structures that trap radicals and enhance chemical bonding, thereby improving light stability and durability
Implementation Method 2
a fluorine-containing ether compound having a perfluoropolyether chain and a hydrolyzable silyl group is suitably used as a surface treatment agent because a surface layer exhibiting high lubricity, water/oil repellency, and the like can be formed on the surface of a substrate
Data Source
AI summary
There is provided a fluorine-containing ether compound excellent in light fastness, a surface treatment agent, a fluorine-containing ether composition, a coating liquid, an article having a surface layer excellent in light fastness, a method for producing the same, and a compound useful as a raw material of the fluorine-containing ether compound excellent in light fastness.A fluorine-containing ether compound represented by the following general formula (A).(R1R2C═CR3-L1-)n1Q1-Rf-Q2(-T)n2 Formula (A)where, each reference sign in the formula (A) is as described in the specification.