发明名称 |
Method for preparing semipermeable membrane compositions |
摘要 |
Semipermeable membranes with improved permeation flux are prepared by contacting a glassy polymer in the form of a hollow fiber or film with a solvent in which the polymer swells at conditions which permit the swelling solvent to diffuse into the glassy polymer and then stretching the swollen polymer in an amount sufficient to cause visible stress whitening.
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申请公布号 |
US4764320(A) |
申请公布日期 |
1988.08.16 |
申请号 |
US19870060871 |
申请日期 |
1987.06.12 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
CHAU, CHIEH-CHUN;TUNG, LU H. |
分类号 |
B01D67/00;B29C55/04;B29C55/12;C08J7/02;D01D5/24;(IPC1-7):B29C55/12;C08J9/36 |
主分类号 |
B01D67/00 |
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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