Fluorinated Silane Composition for Water- and Oil-Repellent Coatings
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Solution Overview
Problem
Existing silane compounds do not provide sufficient water- and oil-repellency for substrate surfaces, limiting their effectiveness in surface treatment applications.
Innovation Solution
A fluorine-containing silane compound represented by formula (1) with specific structural components, including an aromatic group substituted with fluorine, a monovalent Si atom group with a hydroxyl or hydrolyzable group, and varying valency, is used to enhance water- and oil-repellency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional silane compounds are used for surface treatment, then the substrate surface can be treated, but sufficient water- and oil-repellency is not achieved
Solution Approach 1:
The patent modifies the chemical structure of silane compounds by introducing fluorine atoms at specific positions (Rf in formula (1)) to change the surface energy properties. This parameter change in molecular composition directly improves water- and oil-repellency while maintaining ease of application through standard surface treatment processes.
Solution Approach 2:
The invention creates a composite molecular structure combining silane backbone with fluorine-containing aromatic groups (formula (1)). This composite structure integrates the bonding capabilities of silane with the hydrophobic properties of fluorine-substituted aromatic compounds, achieving both reliable water- and oil-repellency and ease of manufacture.
2Reliability
If fluorine-containing silane compounds with specific structure (formula 1) are used, then water- and oil-repellency is improved, but compound complexity increases
Solution Approach 1:
The patent applies fluorine substitution specifically at the Rf position of the aromatic group in formula (1), rather than uniformly throughout the molecule. This localized modification provides the necessary hydrophobicity while keeping the overall compound structure manageable and not excessively complex.
Solution Approach 2:
By defining specific parameter ranges (α1: 1-9, β1: 1-9) in formula (1), the invention systematizes the structural variations, making the complexity predictable and manageable while maintaining the core function of improved water- and oil-repellency.
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 fluorine-containing silane compound provides improved water- and oil-repellency on substrate surfaces, enhancing the performance of surface treatment agents.
Implementation Method 1
Certain types of silane compounds are known to be capable of providing excellent water- and oil-repellency
Data Source
AI summary
A fluorine containing silane compound represented by the following formula (1):wherein, in formula (1), Rf is an aromatic group substituted with a fluorine atom or a fluorine containing substituent; XA is a single bond or a di- to decavalent group; RSi is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded; α1 is an integer of 1 to 9; and β1 is an integer of 1 to 9.