发明名称 |
MULTILAYER POROUS MEMBRANE AND PROCESS OF MANUFACTURE |
摘要 |
<p>A multilayer porous membrane formed of an extrudable polymer is provided. The membrane is formed by co-extruding at least two compositions, each of which comprises a heated porogen and polymer while in contact with each other under conditions to minimize or prevent unstable interfacial flow between extruded layers. In a preferred embodiment, the two compositions are different such that the layers have a different average pore size.</p> |
申请公布号 |
EP1833597(B1) |
申请公布日期 |
2011.03.23 |
申请号 |
EP20050855352 |
申请日期 |
2005.12.21 |
申请人 |
ENTEGRIS, INC. |
发明人 |
YEN, LARRY;PATEL, RAJNIKANT, B. |
分类号 |
B01D71/26;B01D67/00 |
主分类号 |
B01D71/26 |
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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