EP 3124695 A1 20170201 - PROCESS FOR ENHANCING DRY STRENGTH OF PAPER BY TREATMENT WITH VINYLAMINE-CONTAINING POLYMERS AND ACRYLAMIDE- CONTAINING POLYMERS
Title (en)
PROCESS FOR ENHANCING DRY STRENGTH OF PAPER BY TREATMENT WITH VINYLAMINE-CONTAINING POLYMERS AND ACRYLAMIDE- CONTAINING POLYMERS
Title (de)
VERFAHREN ZUR ERHÖHUNG DER TROCKENFESTIGKEIT VON PAPIER DURCH BEHANDLUNG MIT VINYLAMINHALTIGEN POLYMEREN UND ACRYLAMIDHALTIGEN POLYMEREN
Title (fr)
PROCÉDÉ PERMETTANT D'AMÉLIORER LA RÉSISTANCE À SEC DU PAPIER PAR TRAITEMENT À L'AIDE DE POLYMÈRES À TENEUR EN VINYLAMINE ET DE POLYMÈRES CONTENANT DE L'ACRYLAMIDE
Publication
Application
Priority
- US 29067009 P 20091229
- EP 10799243 A 20101222
Abstract (en)
The present invention provides a process for the production of paper, board, and cardboard with enhanced dry strength, and paper product produced by the process. The process comprises adding to the wet end of a paper machine (a) a vinylamine-containing aqueous solution polymer having a molecular weight of from 75,000 daltons to 750,000 daltons and (b) a cationic acrylamide-containing aqueous solution polymer, wherein the polymer is made by way of aqueous dispersion polymerization and has a molecular weight of from 300,000 daltons to 1,500,000 daltons, and wherein the amount of cationic monomers incorporated into the acrylamide-containing polymer comprises from 5 % to 50 % on a molar basis of all the monomers incorporated into the acrylamide-containing polymer.
IPC 8 full level
D21H 21/18 (2006.01); D21H 17/37 (2006.01); D21H 17/45 (2006.01); D21H 17/56 (2006.01)
CPC (source: EP KR US)
D21H 17/35 (2013.01 - KR); D21H 17/37 (2013.01 - KR); D21H 17/375 (2013.01 - KR); D21H 17/56 (2013.01 - KR); D21H 21/14 (2013.01 - KR); D21H 21/18 (2013.01 - EP KR US); D21H 17/35 (2013.01 - EP US); D21H 17/37 (2013.01 - EP US); D21H 17/375 (2013.01 - EP US); D21H 17/56 (2013.01 - EP US)
Citation (applicant)
- US 6939443 B2 20050906 - RYAN MICHAEL [US], et al
- US 6824650 B2 20041130 - LINDSAY JEFF [US], et al
- EP 1579071 A1 20050928 - KIMBERLY CLARK CO [US]
- US 6132558 A 20001017 - DYLLICK-BRENZINGER RAINER [DE], et al
- US 2008000601 A1 20080103 - LEDUC MARC [DE], et al
- US 6746542 B1 20040608 - LORENCAK PRIMOZ [DE], et al
- US 2008196852 A1 20080821 - LEDUC MARC [DE], et al
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- US 2008196851 A1 20080821 - HUND RENE [FR], et al
- US 5541252 A 19960730 - SCHMITT GUNTER [DE], et al
- US 7323510 B2 20080129 - FISCHER ULRICH [DE], et al
- US 2002198317 A1 20021226 - FONG DODD W [US], et al
- US 2008033094 A1 20080207 - BELLMANN SUSANNE [DE], et al
- EP 1918455 A1 20080507 - M REAL OYJ [FI]
- US 7323510 B2 20080129 - FISCHER ULRICH [DE], et al
- "Perry's Chemical Engineers' Handbook", 1999, MCGRAW-HILL, pages: 18 - 78
Citation (search report)
- [IY] WO 2007136756 A2 20071129 - HERCULES INC [US]
- [IDY] US 6824650 B2 20041130 - LINDSAY JEFF [US], et al
- [IY] US 6100322 A 20000808 - PERSSON MICHAEL [SE], et al
- [YD] WO 2006027242 A1 20060316 - BASF AG [DE], et al
- [A] US 6132558 A 20001017 - DYLLICK-BRENZINGER RAINER [DE], et al
- [A] US 6746542 B1 20040608 - LORENCAK PRIMOZ [DE], et al
- [A] US 2005247420 A1 20051110 - BLUM RAINER [DE], et al
- [A] US 6103065 A 20000815 - HUMPHREYS HARRY NELSON [US], et al
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 RS SE SI SK SM TR
DOCDB simple family (publication)
US 2011155339 A1 20110630; AU 2010343125 A1 20120621; AU 2010343125 B2 20141016; BR 112012015966 A2 20160419; BR 112012015966 B1 20200512; CA 2780597 A1 20110728; CA 2780597 C 20170404; CN 102713059 A 20121003; CN 102713059 B 20150902; CN 105040517 A 20151111; EP 2519692 A1 20121107; EP 2519692 B1 20170315; EP 3124695 A1 20170201; ES 2625625 T3 20170720; JP 2013515877 A 20130509; JP 6050122 B2 20161227; KR 20120124398 A 20121113; MX 2012006403 A 20120710; PL 2519692 T3 20170831; PT 2519692 T 20170424; TW 201137201 A 20111101; TW I506182 B 20151101; WO 2011090672 A1 20110728; ZA 201205691 B 20140129
DOCDB simple family (application)
US 97544110 A 20101222; AU 2010343125 A 20101222; BR 112012015966 A 20101222; CA 2780597 A 20101222; CN 201080059943 A 20101222; CN 201510471542 A 20101222; EP 10799243 A 20101222; EP 16189885 A 20101222; ES 10799243 T 20101222; JP 2012547151 A 20101222; KR 20127016776 A 20101222; MX 2012006403 A 20101222; PL 10799243 T 20101222; PT 10799243 T 20101222; TW 99146428 A 20101228; US 2010061750 W 20101222; ZA 201205691 A 20120727