发明名称 |
Method for removing diluent from a polymer extrudate, and its applications |
摘要 |
A method for removing a process solvent (P-sol) from a polymer extrudate, especially in connection with a process for producing a microporous membrane. The method involves contacting the extrudate with chlorinated hydrocarbon (CHC) and hydrofluoroether (HFE) in a first stage; contacting the extrudate from the first stage with HFE in a second stage; combining the first and second waste streams and then separating the P-sol from the combined streams to make an HFE-CHC stream; cooling the HFE-CHC stream to make an HFE-rich phase and a CHC-rich phase; and conducting the CHC-rich phase and/or the HFE-rich phase to step (A).
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申请公布号 |
US8426553(B2) |
申请公布日期 |
2013.04.23 |
申请号 |
US20080808095 |
申请日期 |
2008.12.12 |
申请人 |
KIMISHIMA KOTARO;SUZUKI SADAKATSU;TORAY BATTERY SEPARATOR FILM CO., LTD. |
发明人 |
KIMISHIMA KOTARO;SUZUKI SADAKATSU |
分类号 |
B29B17/00;D06P1/52 |
主分类号 |
B29B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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