Title (en)

COMPOSITE NANOFILTRATION MEMBRANE

Title (de)

KOMPOSIT-NANOFILTRATIONSMEMBRAN

Title (fr)

MEMBRANE COMPOSITE DE NANOFILTRATION

Publication

EP 0865309 A1 19980923 (DE)

Application

EP 96946030 A 19961202

Priority

• DE 9602302 W 19961202
• DE 19545701 A 19951207

Abstract (en)

[origin: DE19545701C1] A composite nanofiltration membrane is proposed with a carrier membrane, in itself known, and a selective separating layer of cellulose-hydroxyalkyl ether. The membrane can be obtained in the following way: the carrier membrane is coated with an aqueous solution of the cellulose-hydroxyalkyl ether which is then cross-linked with an aldehyde to form acetal. Cross-linking is done preferably with the aid of a dialdehyde to the point of water-insolubility.

IPC 1-7

B01D 69/12; B01D 69/10; B01D 71/22

IPC 8 full level

B01D 69/12 (2006.01); B01D 71/22 (2006.01)

CPC (source: EP US)

B01D 69/125 (2013.01 - EP US); B01D 71/22 (2013.01 - EP)

Designated contracting state (EPC)

AT BE CH DE DK FR GB IT LI NL SE

DOCDB simple family (publication)

DE 19545701 C1 19970528; EP 0865309 A1 19980923; WO 9720622 A1 19970612

DOCDB simple family (application)

DE 19545701 A 19951207; DE 9602302 W 19961202; EP 96946030 A 19961202