EP 2315875 B1 20140305 - METHOD FOR INCREASING THE DRY STRENGTH OF PAPER, PAPERBOARD AND CARDBOARD
Title (en)
METHOD FOR INCREASING THE DRY STRENGTH OF PAPER, PAPERBOARD AND CARDBOARD
Title (de)
VERFAHREN ZUR ERHÖHUNG DER TROCKENFESTIGKEIT VON PAPIER, PAPPE UND KARTON
Title (fr)
PROCÉDÉ POUR AMÉLIORER LA RÉSISTANCE À SEC DU PAPIER, DU CARTON-PÂTE ET DU CARTON
Publication
Application
Priority
- EP 2009060331 W 20090810
- EP 08162545 A 20080818
- EP 09781661 A 20090810
Abstract (en)
[origin: WO2010020551A1] Method for producing paper, paperboard and cardboard having a high dry strength by adding at least one water-soluble (a) polymer comprising vinyl amine units and at least one (b) polymer comprising ethylene imine units and at least one water-soluble polymeric anionic compound to form a paper material, dewatering the paper material during the formation of sheets, and drying the paper product, wherein the water-soluble cationic polymers (a) and (b) are metered in an arbitrary sequence or as a mixture to form a paper material, and paper products obtained according to the method.
IPC 8 full level
D21H 17/37 (2006.01); D21H 17/42 (2006.01); D21H 17/44 (2006.01); D21H 17/45 (2006.01); D21H 17/48 (2006.01); D21H 17/55 (2006.01); D21H 17/56 (2006.01); D21H 21/18 (2006.01)
CPC (source: EP US)
D21H 21/18 (2013.01 - EP US); D21H 17/37 (2013.01 - EP US); D21H 17/375 (2013.01 - EP US); D21H 17/44 (2013.01 - EP US); D21H 17/48 (2013.01 - EP US); D21H 17/55 (2013.01 - EP US); D21H 17/56 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010020551 A1 20100225; CA 2733503 A1 20100225; CA 2733503 C 20180703; CN 102124161 A 20110713; CN 102124161 B 20140910; EP 2315875 A1 20110504; EP 2315875 B1 20140305; US 2011132559 A1 20110609; US 8404083 B2 20130326
DOCDB simple family (application)
EP 2009060331 W 20090810; CA 2733503 A 20090810; CN 200980131892 A 20090810; EP 09781661 A 20090810; US 200913058217 A 20090810