Release Solvent Composition for Thermosetting Resin Coatings
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Solution Overview
Problem
Current methods for releasing thermosetting resin coating films from thermoplastic resin molded articles are inefficient and pose safety concerns due to the use of flammable solvents, while existing cleaning solvents like hydrofluoroethers and hydrofluorocarbons have limited cleaning performance and environmental drawbacks.
Innovation Solution
A release solvent composition combining 1,1,2,2,3,3,4-heptafluorocyclopentane with aromatic alcohols and additional components like glycol ethers and phenolic antioxidants, and a cleaning solvent composition using 1,1,2,2,3,3,4-heptafluorocyclopentane with aromatic alcohols and ethers, both designed to avoid flammability and enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional release solvent compositions (γ-butyrolactone, oxalic acid, water or cyclohexanone) are used to release coating films, then the coating film can be released, but fire prevention measures and static electricity prevention measures are required due to flammability
Solution Approach 1:
The patent changes the chemical composition parameters of the release solvent by using higher alcohols (10-40 mass%), esters (30-60 mass%), and ethers (10-40 mass%) with specific boiling points (100°C or more), thereby achieving non-flammability while maintaining release performance
Solution Approach 2:
The patent creates a composite solvent system by combining higher alcohols, esters, and ethers in specific proportions, where the synergistic effect of these components achieves both non-flammability and effective coating film release
2Ease of manufacture
If water is used to remove the release solvent composition from the molded article, then the solvent can be removed, but a waste water processing step is needed
Solution Approach 1:
The patent changes the solvent's chemical properties by selecting higher alcohols, esters, and ethers with specific boiling points and molecular structures that enable easy removal through evaporation or filtration without requiring water-based cleaning processes
Solution Approach 2:
The patent extracts the solvent removal process from the water-based cleaning system by designing solvents that can be removed through evaporation or simple filtration, thereby eliminating the need for waste water processing
3Device complexity
If cyclohexanone is used to release the coating film, then the release process is simplified, but strict fire prevention and static electricity prevention measures are required
Solution Approach 1:
The patent changes the physical and chemical parameters of the solvent by using higher alcohols, esters, and ethers with boiling points of 100°C or more, which inherently provide non-flammability while simplifying safety requirements for the release process
Solution Approach 2:
The patent converts the potential harm of flammability into a benefit by selecting solvent components with high boiling points and low vapor pressures, which naturally prevent fire hazards while maintaining effective release performance
4Reliability
If conventional release solvents are used, then coating film release is achieved, but energy is needed for drying and cleaning water must be wasted
Solution Approach 1:
The patent changes the solvent's evaporation characteristics by selecting higher alcohols, esters, and ethers with specific boiling points and vapor pressures, enabling easier and more energy-efficient removal without requiring extensive drying processes
Solution Approach 2:
The patent extracts the solvent from the system through evaporation or filtration based on its specific physical properties, eliminating the need for water-based rinsing and high-energy drying processes
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 proposed solvent compositions efficiently release thermosetting resin coating films and improve cleaning performance without flammability issues, using non-chlorine fluorinated compounds with low toxicity and environmental impact.
Implementation Method 1
a release solvent composition for releasing a thermosetting resin coating film coated on a thermoplastic resin molded article, the release solvent composition containing: 1,1,2,2,3,3,4-heptafluorocyclopentane and an aromatic alcohol
Implementation Method 2
a cleaning solvent composition suitable for cleaning of a machining oil, grease, wax, which is used to process metals, ceramics or plastic materials
Data Source
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AI summary
A release solvent composition for releasing a thermosetting resin coating film coated on a thermoplastic resin molded article, and the release solvent composition containing 1,1,2,2,3,3,4-heptafluorocyclopentane and aromatic alcohols and having no flash point.