发明名称 |
Composite semipermeable membrane |
摘要 |
A composite semipermeable membrane is described, wherein said membrane comprises (1) a porous substrate, (2) an ultrathin film as a surface layer formed by polymerization by crosslinking of polyvinyl alcohol and an amino compound having at least two secondary amino groups using a polyfunctional crosslinking reagent capable of reacting with secondary amino groups and hydroxyl groups, and (3) a porous inner layer composed of water insoluble polyvinyl alcohol which is present between the porous substrate and the ultrathin film.
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申请公布号 |
US4619767(A) |
申请公布日期 |
1986.10.28 |
申请号 |
US19810287653 |
申请日期 |
1981.07.28 |
申请人 |
NITTO ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KAMIYAMA, YOSHIYASU;YOSHIOKA, NORIAKI;NAKAGOME, KEISUKE |
分类号 |
B32B5/18;B01D69/12;B01D71/38;B01D71/82;C08F8/00;C08F8/30;C08F8/32;C08J9/00;(IPC1-7):B01D13/00 |
主分类号 |
B32B5/18 |
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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