TITLE: DEFECT-FREE ULTRAHIGH FLUX ASYMMETRIC MEMBRANES.
European Patent Application EP0447486 A1

ABSTRACT:
Abstract not available for EP0447486
Abstract of corresponding document: US4902422
Defect-free, ultrahigh flux integrally-skinned asymmetric membranes
having extremely thin surface layers (<0.2 mu m) comprised of glassy
polymers are disclosed. The membranes are formed by casting an
appropriate drope followed by forced convective evaporation of solvent
to obtain a dry phase separated asymmetrical structure. The structure
is then washed in a precipitation liquid and dried.

INVENTORS:
Pinnau, Ingo (US)
Koros, William John (US)

APPLICATION NUMBER: EP19900901305
PUBLICATION DATE: 09/25/1991
FILING DATE: 12/01/1989

ASSIGNEE: Univ, Texas (US)
INTERNATIONAL CLASSES: B01D67/00; B01D69/02; B01D71/10; B01D71/44; B01D71/48; B01D71/50;
B01D71/52; B01D71/56; B01D71/64; B01D71/68; (IPC1-7): B01D67/00;
B01D69/00
EUROPEAN CLASSES: B01D69/02; B01D67/00K14; B01D67/00K14D

OTHER REFERENCES:
See references of WO 9006169A2