TITLE: Process for producing semipermeable membrane.
European Patent Application EP0088515 A1

ABSTRACT:
Abstract not available for EP0088515
Abstract of corresponding document: US4511711
A process for producing a semipermeable membrane having a high flux,
excellent in solute rejection and useful for reverse osmosis,
ultrafiltration and the like which comprises dipping a semipermeable
membrane of acrylonitrile polymer containing 40-100% by mole of
acrylonitrile in a solution of an amine and/or an alkali, or casting a
solution of said polymer containing an amine and/or an alkali to
prepare a semipermeable membrane, and optionally, treating the
semipermeable membrane thus obtained with plasma.

INVENTORS:
Shimomura, Takatoshi
Fujita, Fumio
Hirakawa, Manabu

APPLICATION NUMBER: EP19830300555
PUBLICATION DATE: 09/14/1983
FILING DATE: 02/03/1983

ASSIGNEE: SUMITOMO CHEMICAL CO (JP)
INTERNATIONAL CLASSES: B01D71/42; C08F8/12; C08L33/20; (IPC1-7): B01D13/04
EUROPEAN CLASSES: C08J7/12A+L33/20; B01D71/42

DOMESTIC PATENT REFERENCES:
EP0025973 Porous semipermeable membrane based on polyacrylonitrile
 modified by amidoxime groups, process for its preparation and their
 use.

FOREIGN REFERENCES:
GB1569563A
DE2540638A1
DE2843292A1
DE2910413A1