Fluorinated Cleaning Fluid Composition for Oily Dirt and Polymer Compatibility
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Solution Overview
Problem
Existing cleaning fluids are either flammable, hazardous, or incompatible with polymeric materials, and lack the ability to effectively remove oily dirt and penetrate small spaces on surfaces.
Innovation Solution
A cleaning fluid composition comprising a chlorinated hydrofluoroolefin or hydrochlorofluoroolefin as the first component, combined with a hydrofluorothioether, perfluorinated olefin, or hydrofluorolefin with at least 6 carbon atoms as additional components, providing non-flammability, low surface tension, and compatibility with polymeric materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cleaning fluids are used to remove oily dirt, then cleaning effectiveness is improved, but flammability and hazard increase
Solution Approach 1:
The patent changes the chemical composition parameters by using fluorinated compounds (chlorinated hydrofluoroolefin and hydrofluorothioether) instead of conventional hydrocarbon solvents. This parameter change maintains cleaning effectiveness while eliminating flammability, as fluorinated compounds have inherently lower flammability characteristics
Solution Approach 2:
The patent creates a composite cleaning fluid system by combining two fluorinated components: chlorinated hydrofluoroolefin (providing cleaning power) and hydrofluorothioether (providing low surface tension and penetration). This composite approach achieves both effective oily dirt removal and non-flammability
2Object-affected harmful factors
If chlorinated solvents are used to clean oily dirt, then non-flammability is improved, but compatibility with polymeric materials deteriorates
Solution Approach 1:
The patent changes the chemical structure by incorporating fluorinated groups and specific molecular configurations in the cleaning fluid components. This parameter change allows the solvent to interact with oily dirt while being sterically and chemically incompatible with polymeric materials, preventing dissolution or swelling
Solution Approach 2:
The hydrofluorothioether component acts as an intermediary that provides low surface tension and penetration ability without transferring the harmful effects of chlorinated solvents to polymeric materials. It mediates between the cleaning requirement and polymer protection
3Productivity
If hydrocarbon solvents are used in combination with chlorinated solvents, then cleaning performance is improved, but flammability and surface tension increase
Solution Approach 1:
The patent changes the surface tension parameter by using fluorinated compounds, which inherently have lower surface tension than hydrocarbon solvents. This allows better penetration into small spaces without requiring flammable hydrocarbon additives
Solution Approach 2:
The patent extracts and eliminates the hydrocarbon component from the cleaning fluid formulation, replacing it entirely with fluorinated compounds. This removal of the hydrocarbon fraction eliminates flammability while maintaining cleaning performance through the fluorinated component combination
Data Source
AI summary
Cleaning fluids include at least 2 fluid components. The first fluid component is a chlorinated hydrofluoroolefin, a hydrochlorofluoroolefin, or a mixture of hydrochlorofluoroolefins. The second fluid component includes at least one of a hydrofluorothioether, a perfluorinated olefin with at least 6 carbon atoms, a hydrofluorolefin with at least 6 carbon atoms, a perfluorinated olefin mixture where the perfluorinated olefins have at least 6 carbon atoms, or a hydrofluorolefin mixture where the hydrofluorolefins have at least 6 carbon atoms.