Fluoropolyether Polymer Coating for Non-Fluorine Solubility
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Solution Overview
Problem
Fluoropolyether-containing compounds exhibit low solubility in non-fluorine organic solvents, making it difficult to form cured films with improved water/oil repellency and abrasion resistance without using fluorine-containing organic solvents, which are environmentally and health-hazardous.
Innovation Solution
Development of a fluoropolyether-containing polymer with a polyvalent polysiloxane structure and hydroxyl or hydrolyzable silyl groups, allowing solubility in non-fluorine organic solvents and forming cured films with enhanced water/oil repellency and abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluoropolyether-containing compounds are used to provide water/oil repellency and abrasion resistance, then the surface properties are improved, but the solubility in non-fluorine organic solvents deteriorates
Solution Approach 1:
The patent changes the molecular structure parameters of fluoropolyether-containing compounds by introducing specific structural features (polymer residue with molecular weight 1000-10000, specific fluoropolyether group structures) to improve solubility in non-fluorine organic solvents while maintaining water/oil repellency and abrasion resistance properties
Solution Approach 2:
The patent creates composite molecular structures combining fluoropolyether groups with specific polymer backbones, forming compounds that exhibit both good solubility in non-fluorine organic solvents and excellent surface properties including water/oil repellency and abrasion resistance
2Ease of manufacture
If fluorine-containing organic solvents are used to dissolve fluoropolyether-containing compounds, then the solubility is improved, but environmental and health safety deteriorates
Solution Approach 1:
The patent converts the inherent low solubility of fluoropolyether-containing compounds in non-fluorine organic solvents into a benefit by developing specific molecular structures that achieve good solubility without requiring hazardous fluorine-containing solvents, thereby eliminating environmental and health hazards while maintaining manufacturing effectiveness
Solution Approach 2:
The patent replaces expensive and hazardous fluorine-containing organic solvents with cheaper and safer non-fluorine organic solvents by modifying the compound structure to be compatible with the safer solvent system
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 polymer achieves improved solubility in non-fluorine organic solvents, enabling the formation of cured films with excellent water/oil repellency and abrasion resistance, addressing environmental and health concerns.
Implementation Method 1
In the presence of airborne moisture or the like, the alkoxysilyl groups undergo self-condensation reaction to form a coating
Implementation Method 2
a reactive silyl group (typically alkoxysilyl group)... the alkoxysilyl groups undergo self-condensation reaction
Implementation Method 3
The alkoxysilyl groups form chemical and physical bonds with the surface of glass or metal, whereby the coating becomes a tough coating having durability
Implementation Method 4
The alkoxysilyl groups form chemical and physical bonds with the surface of glass or metal
Implementation Method 5
fluoropolyether-containing compounds exhibit, by virtue of their extremely low surface free energy, water/oil repellency
Data Source
AI summary
A fluoropolyether group-containing polymer represented by general formula (1) can form a cured film that has excellent solubility in at least one non-fluorine organic solvent and has excellent water and oil repellency and wear resistance. Rf[Q-CH(V)2]α, (1) (In the formula, Rf is a polymer residue containing a monovalent or divalent fluoropolyether group, Q is a single bond or a divalent organic group, V is a monovalent group independently having a polyvalent polysiloxane structure and a hydroxyl group and/or a hydrolyzable silyl group bonded to a silicon atom at the end, and α is 1 or 2.)