Title:
NANO- AND ULTRAFILTRATION MEMBRANE AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO2003101595
Kind Code:
A3
Abstract:
The invention relates to a porous nano- and ultrafiltration membrane produced from an elastomer that was obtained in the form of a film by covalently linking at least one monomer, polymer and/or prepolymer. The membrane is obtained by forming a liquid film from the at least one monomer, polymer and/or prepolymer and cross-linking. The film is swelled by carrying out the cross-linking in the presence of a swelling agent or the film is mixed with the swelling agent after cross-linking. The film is spatially fixed during or after cross-linking and the spatially fixed, swelled film is subjected to a deswelling process. The invention also relates to a method, for producing the inventive filtration membrane. The inventive membrane has an exclusion limit smaller than 10 nm, a distinct pore size distribution, high permeate flows and a high mechanical stability.
Inventors:
GLAUE ANDREAS (DE)
MALSCH GUENTER (DE)
WEIGEL THOMAS (DE)
MALSCH GUENTER (DE)
WEIGEL THOMAS (DE)
Application Number:
PCT/DE2003/001785
Publication Date:
September 16, 2004
Filing Date:
May 30, 2003
Export Citation:
Assignee:
GEESTHACHT GKSS FORSCHUNG (DE)
GLAUE ANDREAS (DE)
MALSCH GUENTER (DE)
WEIGEL THOMAS (DE)
GLAUE ANDREAS (DE)
MALSCH GUENTER (DE)
WEIGEL THOMAS (DE)
International Classes:
B01D67/00; B01D71/24; B01D71/42; (IPC1-7): B01D69/12; B01D67/00; B01D61/14
Foreign References:
| US3720321A | 1973-03-13 | |||
| US4200538A | 1980-04-29 | |||
| US4032309A | 1977-06-28 | |||
| US6030442A | 2000-02-29 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 04 30 April 1999 (1999-04-30)
PATENT ABSTRACTS OF JAPAN vol. 0121, no. 81 (C - 499) 27 May 1988 (1988-05-27)
PATENT ABSTRACTS OF JAPAN vol. 0121, no. 81 (C - 499) 27 May 1988 (1988-05-27)
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