发明名称 |
COMPOSITE MICROPOROUS FILTER MEMBRANE |
摘要 |
<p>PURPOSE: To obtain an integrated composite membrane having good structural maintainability and a high bubbling point, and reusable by washing by forming an asymmetric polysulfone ultrafiltration membrane integratedly with a preformed non-fibrous microporous membrane made from a specified base- resistant polymer on the microporous membrane. CONSTITUTION: This composite ultrafiltration membrane comprises a microporous base-resistant membrane support made of a microporous non-fibrous polyolefin or sulfone polymer and an ultrafiltration layer combined to the support and covered with a skin made of sulfone polymer as a multilayer composite produced by applying a sulfone polymer solution to the support of the microporous polyolefin or sulfone polymer by uniformly controlled thickness and then depositing the sulfone polymer to form the porous ultrafiltration layer. As a result, this membrane is resistant to the deterioration caused by contact with strong alkali and reusable by washing.</p> |
申请公布号 |
JPH06218253(A) |
申请公布日期 |
1994.08.09 |
申请号 |
JP19930297602 |
申请日期 |
1993.11.04 |
申请人 |
MILLIPORE CORP |
发明人 |
EREN SHII BERANTOONI;ROBAATO ESU ROIA |
分类号 |
B01D71/26;B01D69/12;B01D71/68;(IPC1-7):B01D71/26 |
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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