Material, Membrane, Use of a Membrane, and Method for Producing a Material

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This patent describes new functionalized oligomeric or polymeric substances that have perfluoroaromatic groups in their structure, where multiple fluorine atoms within these groups are replaced by functional entities, such as thiol, amine, or phosphonate groups, using nucleophilic substitution. The invention also covers membranes made from these materials, methods for producing such substances, and their use in electrochemical applications—especially as ion exchange membranes in devices like fuel cells, electrolyzers, and batteries. By substituting multiple fluorine atoms, the resulting polymers can be tailored to have improved chemical stability, mechanical flexibility, and ion conductivity, making them highly suitable for demanding electrochemical environments.

Use CasesContent extracted from patent full text and abstract with AI.

• Ion exchange membranes for fuel cells, such as hydrogen or direct methanol fuel cells.
• Separation membranes for electrolyzers (water electrolysis, chlor-alkali processes, etc.).
• Membranes for redox-flow batteries and other energy storage devices.
• Ion-conducting membranes for batteries (e.g., lithium-ion or flow batteries).
• Membranes for electrosynthesis and other electrochemical processes requiring chemical/thermal stability and high conductivity.
• Advanced filtration systems where chemical resistance is needed.

BenefitsContent extracted from patent full text and abstract with AI.

• Enhanced chemical and thermal stability compared to traditional polymers due to perfluoroaromatic backbone and tailored substitution.
• Improved mechanical properties, such as reduced brittleness and increased flexibility, allowing for easier membrane handling and processing.
• High ion conductivity, adjustable by choosing appropriate functional groups for substitution, vital for high-performance electrochemical applications.
• Ability to fine-tune membrane properties (hydrophilicity, conductivity, stability) by selecting and combining different functional groups.
• Versatile manufacturing process allowing a wide range of polymer architectures and applications.
• Potential to achieve specific combinations of mechanical and electrochemical properties not possible with existing single-functional-substitution polymers.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The present invention relates: to a substance, in particular functionalised oligomer or polymer, wherein the substance contains oligomeric or polymeric chains to which perfluoroaromatic compounds are coupled or which contain perfluoroaromatic compounds; and to a membrane, in particular a blended membrane; and to a method for producing a substance, comprising the following steps: providing a starting substance, which contains oligomeric or polymeric chains to which perfluoroaromatic compounds having a plurality of fluorine atoms are coupled or which contain perfluoroaromatic compounds having a plurality of fluorine atoms; nucelophilic substitution of at least two, in particular of precisely two, three, four or five fluorine atoms of the perfluoroaromatic compound by one functional group in each case.