Aliphatic Nitrileoxide Compounds with Perfluoroalkyl Substituents
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Solution Overview
Problem
Conventional aromatic nitrileoxide compounds exhibit insufficient thermal stability and industrial challenges arise when introducing specific substituents, such as perfluoroalkyl groups, due to the need for additional synthesis steps.
Innovation Solution
An aliphatic nitrileoxide compound with arbitrary substituents, including perfluoroalkyl groups, is obtained by reacting a nitroethylene derivative with a high nucleophilic agent, followed by dehydration, resulting in a compound with enhanced thermal stability and versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If aromatic nitrileoxide compounds are used to improve stability, then chemical stability is improved, but thermal stability deteriorates
Solution Approach 1:
The patent changes the fundamental structural parameter from aromatic to aliphatic nitrileoxide compounds, and systematically varies substituents (fluorine atoms, perfluoroalkyl groups) to optimize both chemical and thermal stability simultaneously, resolving the contradiction between these two stability parameters
2Adaptability or versatility
If perfluoroalkyl groups are introduced into aromatic nitrileoxide compounds to enhance performance, then functional properties are improved, but manufacturing complexity increases
Solution Approach 1:
The patent changes the molecular structure parameter to aliphatic compounds with perfluoroalkyl groups, which can be synthesized through more direct routes compared to aromatic compounds, thereby reducing manufacturing complexity while maintaining or enhancing functional properties
Solution Approach 2:
The patent creates composite molecular structures combining aliphatic nitrileoxide core with perfluoroalkyl substituent groups, achieving versatile functional properties through the synergistic combination of different molecular fragments with complementary characteristics
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 resulting nitrileoxide compound demonstrates superior stability and reactivity, enabling its use as a surface treatment agent, modifying agent, filler modifier, reactive compatibilizing agent, and fiber treatment agent, providing excellent water-repellency and oil-repellency for various materials.
Implementation Method 1
reacting a nitroethylene derivative with a high nucleophilic agent (for example, a Grignard reagent, alkyllithium, or the like) to obtain a nitronate derivative
Implementation Method 2
dehydrating it, and that the obtained aliphatic nitrileoxide compound has excellent stability
Data Source
AI summary
A stable and easily producible compound of the formula (I):wherein R1 represents a hydrocarbon group; and R2 and R3 represent each independently a hydrogen atom or a hydrocarbon group: provided that in at least one of R1, R2 and R3, at least one hydrogen atoms are substituted by a fluorine atom, and each of R1, R2 and R3 is attached via its carbon atom to a carbon atom to which a nitrileoxide group is attached.