- 专利标题: METHOD FOR MANUFACTURING HOLLOW FIBER MEMBRANE
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申请号: US18285450申请日: 2022-04-04
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公开(公告)号: US20240157307A1公开(公告)日: 2024-05-16
- 发明人: Taiki ITO , Hiroyuki SANO
- 申请人: NOK CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: NOK CORPORATION
- 当前专利权人: NOK CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP 21064677 2021.04.06
- 国际申请: PCT/JP2022/017059 2022.04.04
- 进入国家日期: 2023-10-03
- 主分类号: B01D69/08
- IPC分类号: B01D69/08 ; B01D71/44 ; B01D71/68 ; D01D5/24 ; D04H1/4282 ; D04H1/4326 ; D04H1/4391 ; D04H1/56 ; D06C7/00
摘要:
A method for manufacturing a hollow fiber membrane wherein a spinning stock solution containing 10 mass % or more and 40 mass % or less of a polysulfone-based resin, 1 mass % or more and 30 mass % or less of polyvinylpyrrolidone, and 1 mass % or more and 80 mass % or less of N,N-dimethylformamide is discharged together with a core liquid from a double-ring nozzle to produce a hollow fiber membrane by dry-wet spinning, and then the hollow fiber membrane is subjected to a dry heat treatment at a temperature of 80° C. or higher and 100° C. or lower for 48 hours or longer and 168 hours or shorter.
公开/授权文献
- US2699101A Photocomposing machine 公开/授权日:1955-01-11
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