发明名称 |
Process of making microporous hollow fiber or film membrane of poly(phenylene sulfide) (PPS) |
摘要 |
The present invention relates to a process for preparing a microporous permselective membrane from a poly(phenylene sulfide) (PPS) polymer, an organic compound which substantially solubilizes the PPS below its melting point to form a homogenous mixture, heating the resulting mixture, extruding or casting the mixture into a membrane (fiber or film), quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof. In one embodiment, the solvent optionally includes an organic non-solvent to assist in obtaining the desired microporsity. The permselective polymers are useful to separate gaseous or liquid components from a mixture of components.
|
申请公布号 |
US5246647(A) |
申请公布日期 |
1993.09.21 |
申请号 |
US19910746756 |
申请日期 |
1991.08.19 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
BECK, HENRY N.;MAHONEY, ROBERT D.;WAN, HAWK S.;CHAU, CHIEH-CHUN;FINNEY, TIMOTHY M.;WESSLING, RITCHIE A.;KAWAMOTO, JIRO;SONNENSCHEIN, MARK F. |
分类号 |
B01D53/22;B01D67/00;B01D71/66;C08J3/09;C08J9/26;C08J9/28;D01F6/76 |
主分类号 |
B01D53/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|