EP 3224413 A4 20180425 - PAPER-MAKING AID COMPOSITION AND PROCESS FOR INCREASING TENSILE STRENGTH OF PAPER

Title (en)

PAPER-MAKING AID COMPOSITION AND PROCESS FOR INCREASING TENSILE STRENGTH OF PAPER

Title (de)

HILFSZUSAMMENSETZUNG FÜR DIE PAPIERHERSTELLUNG UND VERFAHREN ZUR ERHÖHUNG DER ZUGFESTIGKEIT VON PAPIER

Title (fr)

COMPOSITION D'ADJUVANTS POUR LA FABRICATION DE PAPIER ET PROCÉDÉ D'AUGMENTATION DE LA RÉSISTANCE À LA TRACTION DU PAPIER

Publication

EP 3224413 A4 20180425 (EN)

Application

EP 15863087 A 20151123

Priority

CN 201410698600 A 20141127
US 2015062081 W 20151123

Abstract (en)

[origin: WO2016085836A1] The present invention relates to a paper-making aid composition including an anionic dialdehyde-modified polyacrylamide (GPAM) and a polyamide polyamine-epichlorohydrin (PAE) resin. The mass ratio of the PAE resin to the anionic GPAM is between about 5 : 1 and about 1 : 1.6. In addition, the present invention further relates to a process for increasing tensile strength of paper, especially dry tensile strength and wet tensile strength, and a paper-making process.

IPC 8 full level

D21H 21/20 (2006.01); D21H 13/26 (2006.01); D21H 17/37 (2006.01); D21H 17/38 (2006.01); D21H 17/42 (2006.01); D21H 17/43 (2006.01); D21H 17/45 (2006.01); D21H 17/55 (2006.01); D21H 17/56 (2006.01); D21H 21/18 (2006.01)

CPC (source: EP KR US)

D21H 17/375 (2013.01 - EP KR US); D21H 17/38 (2013.01 - EP US); D21H 17/42 (2013.01 - EP KR US); D21H 17/43 (2013.01 - EP US); D21H 17/45 (2013.01 - EP KR US); D21H 17/55 (2013.01 - US); D21H 17/56 (2013.01 - EP KR US); D21H 21/18 (2013.01 - EP KR US); D21H 21/20 (2013.01 - EP KR US); D21H 23/28 (2013.01 - US)

Citation (search report)

[X] US 3816556 A 19740611 - COSCIA A, et al
[X] US 2003234089 A1 20031225 - RYAN MICHAEL [US], et al
[X] WO 0011046 A1 20000302 - HERCULES INC [US]
[X] US 4154647 A 19790515 - RAVE TERENCE W [US]
See references of WO 2016085836A1

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)

WO 2016085836 A1 20160602; WO 2016085836 A8 20161215; BR 112017011294 A2 20171226; CA 2968668 A1 20160602; CN 105696414 A 20160622; CN 105696414 B 20220816; CN 107109799 A 20170829; EP 3224413 A1 20171004; EP 3224413 A4 20180425; KR 20170086642 A 20170726; MX 2017006965 A 20170814; US 2018298556 A1 20181018

DOCDB simple family (application)

US 2015062081 W 20151123; BR 112017011294 A 20151123; CA 2968668 A 20151123; CN 201410698600 A 20141127; CN 201580064778 A 20151123; EP 15863087 A 20151123; KR 20177017388 A 20151123; MX 2017006965 A 20151123; US 201515531234 A 20151123