B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 67/00 (2006.01) B01D 61/14 (2006.01) B01D 71/66 (2006.01) C08J 5/18 (2006.01) D01D 5/247 (2006.01)
Patent
CA 2115826
2115826 9304223 PCTABS00020 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 microporosity. The permselective polymers are useful to separate gaseous or liquid components from a mixture of components.
Beck Henry N.
Chau Chieh-Chun
Finney Timothy M.
Kawamoto Jiro
Mahoney Robert D.
Smart & Biggar
The Dow Chemical Company
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