Fluorinated Silane Composition for Continuous Water- and Oil-Repellent Films
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Solution Overview
Problem
Existing compositions containing fluorine-containing silane compounds are unsuitable for forming continuous thin films with water-repellency and oil-repellency, particularly as sealing materials.
Innovation Solution
A curable composition comprising a fluorine-containing silane compound with two or more Si atoms bonded to hydroxyl or hydrolyzable groups, an organosilicon compound with —O—Rg3 groups, a catalyst, and a solvent, which allows for the formation of a continuous thin film with water-repellency and oil-repellency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluorine-containing silane compound is used in existing compositions, then water-repellency and oil-repellency are improved, but the ability to form a continuous thin film is deteriorated
Solution Approach 1:
The invention uses a composite system combining fluorine-containing silane compound (Formula 1) with organosilicon compound (Formula 2). The fluorine-containing silane provides water-repellency and oil-repellency, while the organosilicon compound with —O—Rg3 groups enables continuous thin film formation. This composite approach allows both functions to coexist without compromising either property.
2Reliability
If fluorine-containing silane compound with hydrolyzable groups is used, then sealing material properties are improved, but film continuity is deteriorated
Solution Approach 1:
The organosilicon compound (Formula 2) acts as an intermediary that bridges the fluorine-containing silane compound and the substrate. The —O—Rg3 groups in the organosilicon compound facilitate film formation and continuity, while allowing the fluorine-containing silane to provide its sealing and repellency functions. This mediator enables both requirements to be satisfied simultaneously.
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 composition enables the formation of a continuous thin film with enhanced water-repellency and oil-repellency, suitable for use as a sealing material.
Implementation Method 1
a fluorine-containing silane compound having two or more Si atoms each bonding to at least one group selected from the group consisting of a hydroxyl group and a hydrolyzable group
Implementation Method 2
an organosilicon compound having at least two —O—Rg3 (s) each bonding to a Si atom
Data Source
AI summary
A curable composition including a fluorine-containing silane compound having two or more Si atoms each bonding to at least one group selected from the group consisting of a hydroxyl group and a hydrolyzable group; an organosilicon compound having at least two —O—Rg3 (s) each bonding to a Si atom, wherein each Rg3, at each occurrence, is independently a hydrogen atom or a monovalent organic group; a catalyst; and a solvent.