Title:
USE OF POLYISOCYANATE RESINS IN FILTER LAYERS
Document Type and Number:
WIPO Patent Application WO2002020635
Kind Code:
A3
Abstract:
The invention relates to a wet-strength filter, especially a depth filter with a high swelling capacity. Said filter comprises an open-pored filter matrix containing cellulose fibers and having cavities, said cellulose fibers having chemically bonded polyisocyanate on the surface. According to a preferred form of embodiment, the filter matrix contains finely dispersed microparticles in its cavities. The invention also relates to a method for producing a filter of this type and to the use thereof in the food, beverages and pharmaceutical industries.
Inventors:
STROHM GERHARD (DE)
LEIBNITZ RUEDIGER (DE)
HENNE BERND (DE)
LEIBNITZ RUEDIGER (DE)
HENNE BERND (DE)
Application Number:
PCT/DE2001/003483
Publication Date:
December 05, 2002
Filing Date:
September 06, 2001
Export Citation:
Assignee:
SEITZSCHENK FILTERSYSTEMS GMBH (DE)
STROHM GERHARD (DE)
LEIBNITZ RUEDIGER (DE)
HENNE BERND (DE)
STROHM GERHARD (DE)
LEIBNITZ RUEDIGER (DE)
HENNE BERND (DE)
International Classes:
B01D39/16; B01D39/18; B01D39/00; C08L1/02; D06M11/79; D06M13/395; D06M14/04; D06M15/03; D06M15/09; D06M15/11; D06M15/263; D06M23/08; D21H27/08; D21H17/08; (IPC1-7): B01D39/18; C08L1/02
Foreign References:
| US3506480A | 1970-04-14 | |||
| DE4223604A1 | 1994-01-20 | |||
| US5554287A | 1996-09-10 |
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