发明名称 |
Vinylidene fluoride porous membrane and method of preparing the same |
摘要 |
A polyvinylidene fluoride porous membrane has an asymmetrical structure, excellent mechanical strength such as tensile strength at break and elongation at break, and a desirable narrow range of pore diameter distribution. A method of preparing the porous membrane is also disclosed. The membrane comprises a vinylidene fluoride resin having an inherent viscosity from 1.3 to 15.0 (dl/g), and the membrane comprises pores which satisfy the following numerical expression (A): 4.0<P1/P2</=10.00(A) wherein P1 is an average pore diameter ( mu m) in a surface which has a larger average pore diameter, and P2 is an average pore diameter ( mu m) in the other surface of the membrane.
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申请公布号 |
US5514461(A) |
申请公布日期 |
1996.05.07 |
申请号 |
US19940318332 |
申请日期 |
1994.10.05 |
申请人 |
KUREHA CHEMICAL INDUSTRY CO., LTD. |
发明人 |
MEGURO, KAZUHIRO;MIZUNO, TOSHIYA;TERAMOTO, YOSHIKITI;SATO, HIROSHI |
分类号 |
B01D69/02;B01D71/34;H01M2/16;(IPC1-7):B01D13/00 |
主分类号 |
B01D69/02 |
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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