TITLE: MICROPOROUS HOLLOW FIBER OR FILM MEMBRANE OF POLY(PHENYLENE SULFIDE)
(PPS).
European Patent Application EP0606198 A1

ABSTRACT:
Abstract not available for EP0606198
Abstract of corresponding document: CA2115826
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.

INVENTORS:
Beck, Henry N. (US)
Mahoney, Robert D. (US)
Wan, Hawk S. (US)
Chau, Chieh-chun (US)
Finney, Timothy M. (US)
Wessling, Ritchie A. (US)
Kawamoto, Jiro (US)
Sonnenschein, Mark F. (US)

APPLICATION NUMBER: EP19910916695
PUBLICATION DATE: 07/20/1994
FILING DATE: 08/17/1991

ASSIGNEE: DOW CHEMICAL CO (US)
INTERNATIONAL CLASSES: B01D67/00; B01D71/66; C08J5/18; C08J9/28; C08L81/02; D01D5/06;
D01D5/24; D01D5/247; D01F6/00; D01F6/76; (IPC1-7): D01D5/247
EUROPEAN CLASSES: B01D67/00K14H; B01D67/00K18D; B01D71/66; C08J5/18+L81/02; D01D5/247

FOREIGN REFERENCES:
4968733 Process for producing microporous powders and membranes

OTHER REFERENCES:
See also references of WO 9304223A1