发明名称 |
APPARATUS AND METHOD FOR THE FORMATION OF HETEROGENEOUS ION-EXCHANGE MEMBRANES |
摘要 |
The present invention provides methods and apparatus for the formation of heterogeneous ion-exchange membranes by prescribed in-line compounding and extrusion of a polymeric binder and heat sensitive ion-exchange resin. The ion-exchange resin is incorporated, at a late process stage, into the melted matrix polymer at relatively low temperature and residence time prior to transfer to a die head for extrusion. In the presently preferred embodiment, the in-line compounding apparatus comprises a twin-screw compounding extruder, for effecting late stage kneading and mixing of ion-exchange resin and optional additives to the polymer melt, prior to compression to transfer the blended polymer melt to a die head for extrusion. Accordingly, the final properties of the resultant heterogeneous ion-exchange membrane are enhanced as the blended polymer melt material is not exposed to excessive heat and shear history. Resultant heterogeneous ion-exchange membranes and apparatus for treatment of fluid streams utilizing such membranes are also provided.
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申请公布号 |
CA2325938(A1) |
申请公布日期 |
2001.05.19 |
申请号 |
CA20002325938 |
申请日期 |
2000.11.14 |
申请人 |
ELECTROPURE, INC. |
发明人 |
SNOW, MICHAEL J.;O'HARE, RONALD J.;BERNATOWICZ, JOE M. |
分类号 |
B01D67/00;B01D71/26;B01J47/12;B29B7/38;B29C47/10;C08J5/22;C08L23/10;C08L101/12;(IPC1-7):B29C47/50 |
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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