发明名称 |
Polyvinyl alcohol semi-permeable membrane and method for producing same |
摘要 |
A polyvinyl alcohol (PVA) microporous membrane is disclosed which is prepared by a process which comprises forming a PVA membrane containing fine silica particles therein and substantially extracting said silica particles from said membrane, thereby forming a plurality of micropores therein with an average diameter of 0.01 to 50 microns and a porosity of at least 60%.
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申请公布号 |
US4279752(A) |
申请公布日期 |
1981.07.21 |
申请号 |
US19790041077 |
申请日期 |
1979.05.21 |
申请人 |
KURARAY CO., LTD. |
发明人 |
SUEOKA, AKINORI;OKAMOTO, TAKEHIKO;OHMORI, AKIO;KAWAI, SYUJI;UEDA, MINORU |
分类号 |
B01D67/00;B01D71/38;B01D71/78;B01D71/80;C08J9/26;(IPC1-7):B01D31/00;B01D13/00 |
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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