Nitrogen-Containing Hydrofluoroether Synthesis for Thermal Stability
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Solution Overview
Problem
There is a need for hydrofluoroether compounds with reduced environmental impact that can meet performance requirements across various applications while being cost-effectively manufactured, as existing hydrofluoroethers have limitations in thermal stability and environmental concerns.
Innovation Solution
Development of olefin-type hydrofluoroether compounds with specific perfluoroalkyl and alkyl groups, including nitrogen heteroatoms, which are thermally stable, hydrophobic, and have a low global warming potential, suitable for use as heat transfer agents, solvents, and in coating deposition processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing hydrofluoroether compounds are used, then heat transfer and solvent functions are provided, but thermal stability is insufficient and environmental impact is high
Solution Approach 1:
The patent modifies the molecular structure parameters of hydrofluoroether compounds by incorporating nitrogen-containing heterocyclic groups (such as morpholino, piperidino, pyrrolidino groups) and adjusting the ratio of fluorinated to hydrocarbon groups. These parameter changes enhance thermal stability while the specific molecular configuration reduces environmental impact through controlled biodegradability and lower persistence in the environment.
Solution Approach 2:
The invention creates composite molecular structures by combining fluorinated alkyl groups with nitrogen-containing heterocyclic rings. This composite approach integrates the thermal stability benefits of fluorinated compounds with the functional versatility of nitrogen heterocycles, achieving both improved reliability and reduced environmental harm through optimized molecular design.
2Object-affected harmful factors
If hydrofluoroether compounds with reduced environmental impact are developed, then environmental footprint is reduced, but manufacturing cost may increase
Solution Approach 1:
The patent optimizes molecular parameters to balance environmental performance and manufacturing feasibility. By selecting nitrogen-containing heterocyclic groups with readily available building blocks and straightforward synthesis routes, the invention achieves reduced environmental footprint through controlled degradation while maintaining cost-effective manufacturing through efficient synthetic pathways.
3Reliability
If new hydrofluoroether compounds are synthesized, then thermal stability and performance are improved, but synthesis complexity increases
Solution Approach 1:
The synthetic approach is segmented into distinct modular steps: first forming the nitrogen-containing heterocyclic core structure, then introducing fluorinated alkyl groups in subsequent steps. This segmentation allows each transformation to be optimized independently, reducing overall synthesis complexity while achieving the desired thermal stability through systematic molecular construction.
Solution Approach 2:
The patent employs intermediary compounds with nitrogen-containing heterocyclic groups that serve as stable platforms for subsequent fluorination reactions. These intermediaries simplify the overall synthesis by providing well-defined starting points with predictable reactivity, reducing the complexity of directly synthesizing the final thermally stable hydrofluoroether compounds.
Data Source
AI summary
Provided are amine-containing hydrofluoroether compounds represented by the following general formula (I), wherein (I) Y is a single bond or CF2 and wherein (i) Rf.1 and Rf2 are independently linear or branched perfluoroalkyl groups having with 1-8 carbon atoms and optionally comprise at least one catenated heteroatom, or (ii) Rf1 and Rf2 are bonded together to form a ring structure having 4-6 carbon atoms and optionally comprise one or more catenated heteroatoms; with the proviso that if Rf1 and Rf2 are bonded together to form a ring structure comprising a nitrogen heteroatom, said nitrogen heteroatom is tertiary and is bonded to a perfluoroalkyl group having 1-3 carbon atoms.