发明名称 |
Cellulose compound hollow fiber membrane |
摘要 |
The present invention relates to a cellulose compound hollow fiber membrane having high mechanical strength and is hardly degraded by microorganisms, wherein a cellulose compound is comprised as a membrane material, the thickness of the membrane is 50 to 500 mum, a dense membrane surface having an average pore diameter of 0.001 to 0.05 mum exists on the internal and/or external surface thereof, the inside of the membrane is composed of a three-dimensional network-like porous structure having voids with an average pore diameter of 0.05 to 2 mum, and 70% by weight or more of the membrane material is cellulose acetate propionate or cellulose acetate butyrate.</PTEXT>
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申请公布号 |
US6632366(B1) |
申请公布日期 |
2003.10.14 |
申请号 |
US20000719202 |
申请日期 |
2000.05.12 |
申请人 |
DAICEL CHEMICAL INDUSTRIES, LTD. |
发明人 |
NAKATSUKA SHUJI;MATSUOKA SACHIKO |
分类号 |
B01D67/00;B01D69/02;B01D69/08;B01D71/18;C02F1/44;(IPC1-7):B01D29/00;B01D71/10 |
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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