Fluorinated Ether Coating for Abrasion-Resistant Water Repellency
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Solution Overview
Problem
Fluorinated ether compounds with high initial water/oil repellency are inadequate in abrasion resistance and fingerprint stain removability, limiting their long-term effectiveness in surface treatment applications.
Innovation Solution
A fluorinated ether compound with a specific molecular structure, featuring a poly(oxyperfluoroalkylene) chain and hydrolysable silyl groups, is used to form a surface-treated layer that balances initial water/oil repellency, abrasion resistance, and fingerprint stain removability through a combination of chemical bonding and molecular weight optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluorinated ether compound with poly(oxyperfluoroalkylene) chain is used for surface treatment, then initial water/oil repellency is improved, but abrasion resistance deteriorates
Solution Approach 1:
The patent changes the molecular weight parameter of the fluorinated ether compound to optimize both initial water/oil repellency and abrasion resistance. By controlling the molecular weight within a specific range, the compound achieves high initial repellency while maintaining sufficient abrasion resistance for long-term performance.
Solution Approach 2:
The patent uses a composite approach by combining the fluorinated ether compound with specific functional groups (hydrolysable silyl groups) to create a surface-treated layer that integrates both repellency and durability functions, resolving the contradiction between initial performance and long-term abrasion resistance.
2Reliability
If a fluorinated ether compound with poly(oxyperfluoroalkylene) chain is used for surface treatment, then initial water/oil repellency is improved, but fingerprint stain removability deteriorates
Solution Approach 1:
The patent optimizes the molecular weight parameter of the fluorinated ether compound to balance initial water/oil repellency with fingerprint stain removability. The specific molecular weight range enables the surface to repel stains effectively while maintaining ease of removal through wiping.
Solution Approach 2:
The patent incorporates hydrolysable silyl groups into the fluorinated ether compound structure, creating a composite functional material that provides both high initial repellency and good fingerprint stain removability, resolving the contradiction between these two performance aspects.
3Duration of action of stationary object
If a fluorinated ether compound is used to maintain water/oil repellency over time, then durability is improved, but initial repellency performance deteriorates
Solution Approach 1:
The patent carefully controls the molecular weight parameter of the fluorinated ether compound to achieve a balance between initial repellency performance and long-term durability. This parameter optimization ensures that the surface maintains high repellency initially while sustaining it over time through repeated contact.
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 fluorinated ether compound achieves high initial water/oil repellency and excellent abrasion resistance and fingerprint stain removability, maintaining performance over time, particularly suitable for touch panels and surfaces subject to repeated contact.
Implementation Method 1
a hydrolysable silyl group at one terminal via a linking group
Implementation Method 2
through a combination of chemical bonding and molecular weight optimization
Implementation Method 3
a fluorinated ether compound having a poly(oxyperfluoroalkylene) chain in which an ether bond (-O-) is present in the middle of a perfluoroalkyl chain is particularly excellent in the fat and oil stain removability
Data Source
AI summary
To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain (αβ) having a C4 oxyperfluoroalkylene unit (α) and an oxyperfluoroalkylene unit (β) other than the unit (α) and which has a hydrolysable silyl group on at least one terminal of the poly(oxyperfluoroalkylene) chain (αβ) via a linking group.