发明名称 |
CONTINUOUS PROCESS FOR MAKING COATED COMPOSITE HOLLOW FIBER MEMBRANES |
摘要 |
The present invention is a process for applying a semi-permeable coating on a hollow fiber substrate. The hollow fiber substrate is continuously passed through a polymeric coating solution and withdrawn from the solution through a coating die to form a uniform polymeric solution coating on the outer surface of the hollow fiber. The coated hollow fiber is dried by passing it through a convective flow tunnel in which the rate of drying is controlled both by a pre-determined temperature profile in the tunnel and by a controlled air flow rate through the tunnel. The resultant material is a semi-permeable, coated composite hollow fiber membrane which can be used in gas and/or liquid separations.
|
申请公布号 |
CA1333028(C) |
申请公布日期 |
1994.11.15 |
申请号 |
CA19890591307 |
申请日期 |
1989.02.17 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC.;AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
PURI, PUSHPINDER S.;PURI, PUSHPINDER S. |
分类号 |
B01D71/70;B01D67/00;B01D69/08;B01D69/12;B01D71/26;B01D71/68;(IPC1-7):B01D67/00 |
主分类号 |
B01D71/70 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|