Document Type and Number:
Japanese Patent JPH0218695
Kind Code:
B2
Abstract:
Disclosed are asymmetrical macroporous membranes based on a synthetic polymer comprising a polymeric mixture of 5 to 70% by weight polyvinylpyrrolidone having a molecular weight >/=100,000 Dalton and 95 to 30% by weight of a polymer selected from a group consisting of a polysulfone, a polyether sulfone and an aromatic or araliphatic polyamide, each of the percentages by weight being relative to the total weight of the polymeric mixture. The membrane has a water absorbency of at least 11% by weight of water, relative to its total weight, at 100% relative humidity and 25 DEG C. Also disclosed is a process for preparation of the membranes.
Inventors:
AKUSERU UARUHI
YURUGEN UIRUTOHARUTO
DEIITAA BAISERU
YURUGEN UIRUTOHARUTO
DEIITAA BAISERU
Application Number:
JP21789682A
Publication Date:
April 26, 1990
Filing Date:
December 14, 1982
Export Citation:
Assignee:
HOECHST AG
International Classes:
C08L39/00; B01D67/00; B01D71/44; B01D71/56; B01D71/68; C08J9/28; C08L39/06; C08L77/00; C08L81/00
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