Solvent Composition for Metal Cleaning Without Corrosion
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Solution Overview
Problem
1233yd, a solvent used for cleaning, can cause metal corrosion when in contact with it, and existing alternatives like HFCs and PFCs have high global warming potential and limited solubility.
Innovation Solution
A solvent composition comprising 1233yd with a stabilizer component, such as 226ba, to inhibit metal corrosion and enhance solubility, stability, and cleaning properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional solvents (ketone, ester, hydrocarbon) are used for cleaning metal surfaces, then coating adhesion can be achieved, but the solvents cause environmental pollution and health hazards
Solution Approach 1:
The patent changes the chemical composition parameters of the cleaning solvent by formulating a water-based solvent containing specific surfactants (anionic, nonionic, and/or cationic types) and optional co-solvents, replacing conventional organic solvents. This parameter change enables the solvent to effectively remove oils and greases while being environmentally friendly and non-hazardous to health, thus resolving the contradiction between harmful factors and coating adhesion reliability.
2Object-affected harmful factors
If water-based solvents are used to replace conventional solvents, then environmental friendliness is improved, but cleaning effectiveness and coating adhesion may deteriorate
Solution Approach 1:
The patent introduces surfactants as intermediary substances in the water-based solvent formulation. These surfactants (including anionic, nonionic, and cationic types) act as mediators that enable water to effectively interact with and remove hydrophobic oils and greases from metal surfaces. This intermediary mechanism allows water-based solvents to achieve cleaning effectiveness comparable to conventional organic solvents while maintaining environmental friendliness.
Solution Approach 2:
The patent creates a composite water-based solvent system by combining water with multiple types of surfactants and optional co-solvents. This composite formulation synergistically enhances the cleaning effectiveness of the water-based solvent, enabling it to effectively remove various types of contaminants while maintaining environmental benefits, thus resolving the contradiction between environmental friendliness and cleaning effectiveness.
3Productivity
If metal surfaces are not properly cleaned before coating, then production time is reduced, but coating quality and adhesion deteriorate
Solution Approach 1:
The water-based solvent system is formulated to be self-effective in removing a wide range of contaminants (oils, greases, fingerprints, processing residues) from metal surfaces in a single cleaning step. The synergistic combination of surfactants enables the solvent to automatically and effectively clean various types of contaminants without requiring multiple cleaning stages or additional treatment steps, thus maintaining high coating quality while reducing production time.
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 solvent composition effectively inhibits metal corrosion, maintains stability, and enhances solubility, forming a uniform coating film.
Implementation Method 1
a water-based solvent that has come into widespread use as a replacement for conventional solvents has been found to be effective in removing oils, greases and other contaminants from metal surfaces
Implementation Method 2
solvent composition comprising water and a surfactant
Data Source
AI summary
The present invention provides a solvent composition that can inhibit corrosion of a metal, a cleaning method using the solvent composition, and a method for producing an article provided with a coating film. The solvent composition of the present invention comprises 1-chloro-2,3,3-trifluoropropene and a specified second component, and is characterized in that the proportion of the total amount of the content of the second component to the sum of the content of 1-chloro-2,3,3-trifluoropropene and the total amount of the content of the second component is from 0.0001 to 1.0 mass%.