EP 2443284 B2 20201118 - METHOD FOR INCREASING DRY STRENGTH OF PAPER, PAPERBOARD AND CARDBOARD
Title (en)
METHOD FOR INCREASING DRY STRENGTH OF PAPER, PAPERBOARD AND CARDBOARD
Title (de)
VERFAHREN ZUR ERHÖHUNG DER TROCKENFESTIGKEIT VON PAPIER, PAPPE UND KARTON
Title (fr)
PROCÉDÉ DE FABRICATION POUR AUGMENTER LA RÉSISTANCE À SEC DE PAPIER ET DE CARTON PRÉSENTANT
Publication
Application
Priority
- EP 2010057890 W 20100607
- EP 09007861 A 20090616
- EP 10724788 A 20100607
Abstract (en)
[origin: WO2010145956A1] The invention relates to a method for producing paper, paperboard, and cardboard having high dry strength, by adding (a) at least one trivalent cation in form of a salt; (b) at least one water-soluble cationic polymer; and (c) at least one water-soluble amphoteric polymer to the paper pulp, dehydrating the paper pulp while forming sheets, and subsequent drying of the paper product, wherein the water-soluble cationic polymer (b) is selected from the group of polymers containing vinylamine units (i), and from polymers containing ethylenimine units.
IPC 8 full level
D21H 17/37 (2006.01); D21H 17/00 (2006.01); D21H 17/44 (2006.01); D21H 17/56 (2006.01); D21H 17/66 (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 17/44 (2013.01 - EP US); D21H 17/56 (2013.01 - EP US); D21H 17/66 (2013.01 - EP US); D21H 17/74 (2013.01 - EP US)
Citation (opposition)
Opponent :
- JP 2000022092 A 20000121 - NIPPON TELEGRAPH & TELEPHONE
- JP 2005226174 A 20050825 - KURITA WATER IND LTD
- JP H0593393 A 19930416 - NIPPON PMC KK
- JP 2005281922 A 20051013 - KURITA WATER IND LTD
- JP 2003181466 A 20030702 - HYMO CORP
- WO 2006071961 A1 20060706 - HERCULES INC [US]
- CA 2586076 A1 20060601 - BASF AG [DE]
- US 6132558 A 20001017 - DYLLICK-BRENZINGER RAINER [DE], et al
- US 6616807 B1 20030909 - DYLLICK-BRENZINGER RAINER [DE], et al
- MOSS, G.P. ET AL: "Glossary of Class Names of Organic Compounds and Reactive Intermediates based on Structure", PURE & APPL CHEM, vol. 67, no. 8/9, 1995
- Extract from Chemguide.co.uk
Designated contracting state (EPC)
AL 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 2010145956 A1 20101223; CA 2763508 A1 20101223; CA 2763508 C 20180717; CN 102459760 A 20120516; CN 104532674 A 20150422; EP 2443284 A1 20120425; EP 2443284 B1 20180117; EP 2443284 B2 20201118; ES 2663702 T3 20180416; ES 2663702 T5 20211216; JP 2012530196 A 20121129; JP 5832426 B2 20151216; PL 2443284 T3 20180731; PL 2443284 T5 20210419; US 2012073773 A1 20120329; US 8926797 B2 20150106
DOCDB simple family (application)
EP 2010057890 W 20100607; CA 2763508 A 20100607; CN 201080026943 A 20100607; CN 201410707547 A 20100607; EP 10724788 A 20100607; ES 10724788 T 20100607; JP 2012515423 A 20100607; PL 10724788 T 20100607; US 201013376509 A 20100607