EP 1159060 A2 20011205 - MULTILAYER MEMBRANES AND METHOD FOR THE PRODUCTION THEREOF
Title (en)
MULTILAYER MEMBRANES AND METHOD FOR THE PRODUCTION THEREOF
Title (de)
MEHRSCHICHTMEMBRANEN UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
MEMBRANES MULTICOUCHES ET LEUR PROCEDE DE FABRICATION
Publication
Application
Priority
- DE 0000707 W 20000225
- DE 19909841 A 19990306
Abstract (en)
[origin: DE19909841A1] The invention applies to the fields of chemistry and relates to multilayer membranes, such as those used, for example, to separate aqueous alcohol mixtures by means of pervaporation. The aim of the invention is to provide a multilayer membrane having a defect-free, separation-active layer and exhibiting a high separation capacity. To this end, the invention provides multilayer membranes consisting of a dense or microporous supporting material and of at least one single layer which is applied thereto and which is attached to the supporting material by polyelectrolyte complexes, whereby few single layers are applied and the first single layer predominantly covers the surface of the supporting material. The aim of the invention is also accomplished by using a method for producing multilayer membranes in which at least one single layer consisting of at least one anionic polyelectrolyte material or, alternatively, of at least one cationic polyelectrolyte material or of at least one non-stoichiometric polyelectrolyte complex is applied to a dense or microporous supporting material which is functionalized with ionic and/or ionizable groups.
IPC 1-7
IPC 8 full level
B01D 61/36 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/80 (2006.01)
CPC (source: EP US)
B01D 61/362 (2013.01 - EP); B01D 61/3621 (2022.08 - US); B01D 69/10 (2013.01 - EP); B01D 69/1071 (2022.08 - US); B01D 69/12 (2013.01 - EP); B01D 69/1216 (2022.08 - US); B01D 71/80 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19909841 A1 20000907; AU 4284500 A 20000928; DE 10080521 D2 20020725; EP 1159060 A2 20011205; WO 0053296 A2 20000914; WO 0053296 A3 20001228
DOCDB simple family (application)
DE 19909841 A 19990306; AU 4284500 A 20000225; DE 0000707 W 20000225; DE 10080521 T 20000225; EP 00922423 A 20000225