Global Patent Index - EP 1315545 A2

EP 1315545 A2 2003-06-04 - USE OF POLYISOCYANATE RESINS IN FILTER LAYERS

Title (en)

USE OF POLYISOCYANATE RESINS IN FILTER LAYERS

Title (de)

EINSATZ VON POLYISOCYANATHARZEN IN FILTERSCHICHTEN

Title (fr)

UTILISATION DE RESINES DE POLYISOCYANATE DANS DES COUCHES FILTRANTES

Publication

EP 1315545 A2 (DE)

Application

EP 01978114 A

Priority

  • DE 0103483 W
  • DE 10044218 A

Abstract (en)

[origin: WO0220635A2] 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.

IPC 1-7 (main, further and additional classification)

B01D 39/18; C08L 1/02

IPC 8 full level (invention and additional information)

B01D 39/00 (2006.01); B01D 39/16 (2006.01); B01D 39/18 (2006.01); C08L 1/02 (2006.01); D06M 11/79 (2006.01); D06M 13/395 (2006.01); D06M 14/04 (2006.01); D06M 15/03 (2006.01); D06M 15/09 (2006.01); D06M 15/11 (2006.01); D06M 15/263 (2006.01); D06M 23/08 (2006.01); D21H 27/08 (2006.01); D21H 17/08 (2006.01)

CPC (invention and additional information)

D21H 27/08 (2013.01); B01D 39/1653 (2013.01); B01D 39/18 (2013.01); C08L 1/02 (2013.01); D21H 17/08 (2013.01)

Combination set (CPC)

C08L 1/02 + C08L 2666/02

Citation (search report)

See references of WO 0220635A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0220635 A2 20020314; WO 0220635 A3 20021205; AU 1035002 A 20020322; DE 10044218 A1 20020404; EP 1315545 A2 20030604; JP 2004508180 A 20040318; US 2004089601 A1 20040513

INPADOC legal status


2004-05-19 [18W] APPLICATION WITHDRAWN

- Effective date: 20040325

2003-11-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031006

2003-08-27 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: PALL CORPORATION

2003-06-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030307

2003-06-04 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR