EP 1825056 B1 20150114 - BENTONITE FOR BINDING IMPURITIES DURING PAPER PRODUCTION
Title (en)
BENTONITE FOR BINDING IMPURITIES DURING PAPER PRODUCTION
Title (de)
BENTONITE ZUR STÖRSTOFFBINDUNG IN DER PAPIERHERSTELLUNG
Title (fr)
BENTONITE DESTINEE A LIER DES IMPURETES DANS LA FABRICATION DE PAPIER
Publication
Application
Priority
- EP 2005012775 W 20051130
- DE 102004060587 A 20041216
Abstract (en)
[origin: WO2006063682A2] Disclosed is a method for binding impurities during the production of paper. Said method comprises the following steps: a) a bentonite is provided, the ratio of monovalent cations in the cation exchange capacity (CEC) of the bentonite being at least 0.7 and the CEC amounting to more than 85 meq/100g, preferably more than 90 meq/100g, particularly more than 95 meq/100g; b) the bentonite provided according to step a) is added to a paper pulp or pulp slurry; and c) the impurities are bonded to the bentonite in the pulp or pulp slurry.
IPC 8 full level
D21H 21/02 (2006.01)
CPC (source: EP KR US)
D21H 21/02 (2013.01 - EP KR US); D21H 17/68 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006063682 A2 20060622; WO 2006063682 A3 20070125; BR PI0515785 A 20080805; DE 102004060587 A1 20060706; EP 1825056 A2 20070829; EP 1825056 B1 20150114; ES 2531071 T3 20150310; JP 2008524451 A 20080710; KR 20070089805 A 20070903; MX 2007006952 A 20070625; PL 1825056 T3 20150731; PT 1825056 E 20150408; US 2009044921 A1 20090219
DOCDB simple family (application)
EP 2005012775 W 20051130; BR PI0515785 A 20051130; DE 102004060587 A 20041216; EP 05826382 A 20051130; ES 05826382 T 20051130; JP 2007545875 A 20051130; KR 20077013518 A 20070615; MX 2007006952 A 20051130; PL 05826382 T 20051130; PT 05826382 T 20051130; US 72122905 A 20051130