发明公开
EP2520357A1 MULTILAYERED CHARGE-MOSAIC MEMBRANE AND MANUFACTURING METHOD THEREFOR
审中-公开
美国皇家大学教授迈克尔·杰克逊
- 专利标题: MULTILAYERED CHARGE-MOSAIC MEMBRANE AND MANUFACTURING METHOD THEREFOR
- 专利标题(中): 美国皇家大学教授迈克尔·杰克逊
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申请号: EP10841001.0申请日: 2010-12-27
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公开(公告)号: EP2520357A1公开(公告)日: 2012-11-07
- 发明人: JIKIHARA, Atsushi , KOBAYASHI, Kenichi , HIGA, Mitsuru
- 申请人: Kuraray Co., Ltd. , Yamaguchi University
- 申请人地址: 1621, Sakazu Kurashiki-shi Okayama 710-0801 JP
- 专利权人: Kuraray Co., Ltd.,Yamaguchi University
- 当前专利权人: Kuraray Co., Ltd.,Yamaguchi University
- 当前专利权人地址: 1621, Sakazu Kurashiki-shi Okayama 710-0801 JP
- 代理机构: Müller-Boré & Partner Patentanwälte
- 优先权: JP2010220042 20100929; JP2009298285 20091228
- 国际公布: WO2011081145 20110707
- 主分类号: B01D69/12
- IPC分类号: B01D69/12 ; B01D69/02 ; B01D71/82
摘要:
There is provided a multilayered charge-mosaic membrane having a porous supporting layer (A), a porous intermediate layer (B) and a charge-mosaic layer (C), wherein the porous supporting layer (A), the porous intermediate layer (B) and the charge-mosaic layer (C) are located in this order; the porous supporting layer (A) and/or the porous intermediate layer (B) are made of a fiber layer containing hydrophilic fibers; a thickness of the porous intermediate layer (B) is 0.1 to 100 µm; a porosity of the porous supporting layer (A) is larger than a porosity of the porous intermediate layer (B); the cationic and/or the anionic polymers constituting the charge-mosaic layer (C) is a polyvinyl alcohol having an ionic group. Thus, there is provided a multilayered charge-mosaic membrane having a large salt permeation flux and excellent mechanical strength.
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