Solvent Composition Using Z-1223xd for PFPE Dissolution
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Solution Overview
Problem
The development of a solvent composition that effectively dissolves compounds with a perfluoropolyether group (PFPE) without harming the environment, as existing fluorine-containing solvents like CFCs and HFCs have adverse effects on the ozone layer and contribute to global warming.
Innovation Solution
A solvent composition primarily containing Z-1,2-dichloro-3,3,3-trifluoropropene (1223xd(Z)) with optional E-1,2-dichloro-3,3,3-trifluoropropene, HFCs, HFEs, or HFOs, which includes stabilizers, flame retardants, surfactants, metal passivators, and rust-preventing agents to enhance solubility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluorine-containing solvents (CFCs, HCFC, PFCs, HFCs) are used to dissolve PFPE compounds, then excellent thermal and chemical stability is achieved, but adverse effects on the ozone layer and global warming occur
Solution Approach 1:
The patent changes the chemical composition parameters of the solvent by using HFO-1223xd (Z-isomer) as the main component, which has different environmental properties compared to conventional solvents. This substitution maintains the ability to dissolve PFPE compounds while eliminating ozone-depleting and high-GWP characteristics, achieving both stability and environmental compatibility
Solution Approach 2:
The patent creates a composite solvent system by combining HFO-1223xd with optional components (HFCs, HFEs, HFOs) and additives (stabilizers, flame retardants, surfactants, metal passivators, rust-preventing agents). This composite approach ensures excellent dissolution stability for PFPE compounds while the HFO-1223xd base provides environmental compatibility, resolving the contradiction between performance and environmental impact
2Object-affected harmful factors
If HFOs like 1214ya or 1223xd are used as substitutes for conventional solvents, then environmental impact is reduced, but dissolution performance for PFPE compounds has not been sufficiently investigated
Solution Approach 1:
The patent utilizes HFO-1223xd, which has a short atmospheric lifetime (about 10 days), as a disposable-like solvent that quickly degrades in the environment, minimizing long-term accumulation and impact. This short-lived HFO provides sufficient dissolution performance for PFPE compounds while ensuring rapid environmental degradation, effectively resolving the uncertainty about HFO performance
Solution Approach 2:
The patent specifically selects the Z-isomer of HFO-1223xd over the E-isomer, as the Z-isomer provides superior dissolution performance for PFPE compounds. This parameter change (isomer selection) ensures both environmental compatibility and reliable dissolution performance, addressing the lack of sufficient investigation into HFO effectiveness
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 provides excellent dissolution stability and minimal environmental impact, allowing for the formation of coating films and efficient cleaning of PFPE-containing articles without adverse effects on materials like polycarbonate and ABS resin.
Implementation Method 1
a solvent composition containing Z-1,2-dichloro-3,3,3-trifluoropropene (hereinafter, also referred to as '1223xd(Z)') as a main component sufficiently dissolves a compound having PFPE group
Data Source
AI summary
One of the problems is to provide a solvent composition which has a little adverse effect on the global environment and has excellent stability when a compound having a perfluoropolyether (PFPE) group is in a solution state. In an embodiment, the problem is solved by providing a solvent composition for dissolving a compound having a perfluoropolyether (PFPE) group includes Z-1,2-dichloro-3,3,3-trifluoropropene (1223xd(Z)) as a main component.