This invention presents a new process for polymerizing 3,4-alkylenedioxythiophene derivatives. The method involves heating these derivatives in a solvent with a palladium catalyst, a phase transfer catalyst, and a base to produce polymers. This approach is more economical and efficient than existing methods, compatible with various functional groups, and allows for the recovery of monomers in case of a failed reaction. It eliminates the need for bromine-containing monomers, simplifying the process and reducing costs, while producing high-quality, stable polymers suitable for industrial applications.
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The patent addresses the need for a simpler, more cost-effective, and environmentally friendly method for synthesizing high-quality polymers based on 3,4-alkylenedioxythiophene derivatives, particularly 3,4-propylenedioxythiophenes. Existing methods like oxidative polymerization yield poor quality polymers, while reductive polymerization methods (Grignard metathesis and C-H Arylation) are either challenging to synthesize/scale up, incompatible with certain functional groups, intolerant to moisture, or lead to monomer loss if the reaction fails, making them economically risky.
- Economical and Efficient: The process is more cost-effective, reducing expense of polymer production.
- Functional Group Compatibility: It is tolerant to various pendant functional groups, allowing for greater versatility in polymer design and application.
- Monomer Recovery: In case of a failed reaction, the monomers can be completely recovered.
- Simplified Process: The method eliminates the need for bromine-containing monomers, simplifying the synthesis process and reducing costs.
- High-Quality Polymers: The resulting polymers are of high quality and stability, suitable for a wide range of industrial applications.
For a prototype of the polymerization process of 3,4-alkylenedioxythiophene derivatives, the inputs include 3,4-alkylenedioxythiophene monomers, palladium acetate catalyst (1-10 mol%), phase transfer catalyst such as tetrabutyl ammonium bromide, and a base like sodium acetate or potassium carbonate. The process operates at temperatures ranging from room temperature to the boiling point of the solvent used, potentially even up to supercritical temperatures in continuous flow systems. Solvents like DMF or other suitable organic solvents (e.g., acetophenone, toluene) are used based on monomer solubility. The prototype aims to demonstrate efficient polymerization, high product yield, and the ability to scale up economically.
The development of polymers from 3,4-alkylenedioxythiophene derivatives is advancing rapidly, with improved C-H arylation polymerization methods now available. These advancements offer simpler, more cost-effective, and environmentally friendly processes to yield high-quality, functionalized polymers for diverse applications.
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- Environmental Benefits: The process avoids harmful bromine compounds and operates under milder conditions, making it both environmentally friendly and energy-efficient.
- Technological Advancement: Production of high-quality, stable polymers suitable for advanced technological applications, enabled by compatibility with various functional groups for diverse industrial uses.
- Sustainability: Efficient use of raw materials and monomer recovery support sustainable manufacturing practices.
Electronics, Medical Devices, Advanced Materials, Textiles, Automotive and Aerospace, Renewable Energy.
Geography of IP
Type of IP
202121004344
426788