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PROCESS FOR PRODUCING POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER AND POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER
PROCESS FOR PRODUCING POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER AND POROUS ETHYLENE/TETRAFLUOROETHYLENE COPOLYMER
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机译:制备多孔乙烯/四氟乙烯共聚物和多孔乙烯/四氟乙烯共聚物的方法
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摘要
To provide a method for easily producing an ethylene/tetrafluoroethylene copolymer porous material having excellent chemical resistance and filtration performance and has a high heat resistance, within a wide range of the porosity, and an ethylene/tetrafluoroethylene copolymer porous material obtained by such a process. A process for producing an ethylene/tetrafluoroethylene copolymer porous material which comprises a step of dissolving an ethylene/tetrafluoroethylene copolymer having repeating units based on ethylene and repeating units based on tetrafluoroethylene at a temperature of at most 300°C in a solvent which can dissolve the ethylene/tetrafluoroethylene copolymer at a temperature of at most 300°C, to achieve a predetermined concentration to obtain a solution, a step of forming the solution to obtain a formed product, and a step of cooling the formed product to a temperature of at most the phase separation temperature of the solution to solidify the ethylene/tetrafluoroethylene copolymer.
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