EP 2870287 A1 20150513 - IMPROVED METHOD FOR MANUFACTURING PAPER USING A CATIONIC POLYMER OBTAINED BY HOFMANN DEGRADATION
Title (en)
IMPROVED METHOD FOR MANUFACTURING PAPER USING A CATIONIC POLYMER OBTAINED BY HOFMANN DEGRADATION
Title (de)
VERBESSERTES VERFAHREN ZUR HERSTELLUNG VON PAPIER MIT EINEM DURCH HOFMANN-ABBAU GEWONNENEN KATIONISCHEN POLYMER
Title (fr)
PROCEDE AMELIORE DE FABRICATION DE PAPIER UTILISANT UN POLYMERE CATIONIQUE OBTENU PAR DEGRADATION D'HOFMANN
Publication
Application
Priority
- FR 1256575 A 20120709
- FR 2013051406 W 20130617
Abstract (en)
[origin: WO2014009621A1] A method for manufacturing a sheet of paper and/or of cardboard, according to which, in an apparatus comprising a dilution pump and a head box: - a cellulose-based fibrous suspension is prepared, - the white water is introduced into the thick paste; - the mixture is homogenized in the dilution pump; - the diluted paste is transferred to the head box; - the sheet is formed and then dried, characterized in that, before homogenization of the mixture in the dilution pump, a cationic copolymer obtained by "Hofmann" degradation reaction is introduced into the white water and/or the thick paste and/or the mixture formed by the white water and the thick paste.
IPC 8 full level
D21H 17/45 (2006.01); D21F 11/02 (2006.01); D21H 17/55 (2006.01); D21H 21/10 (2006.01)
CPC (source: EP KR US)
D21F 1/82 (2013.01 - EP KR US); D21H 17/45 (2013.01 - EP KR US); D21H 17/55 (2013.01 - KR); D21H 17/67 (2013.01 - US); D21H 17/74 (2013.01 - US); D21H 21/10 (2013.01 - EP KR US); D21H 17/55 (2013.01 - EP US)
Citation (search report)
See references of WO 2014009621A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 2992981 A1 20140110; FR 2992981 B1 20140704; BR 112014031379 A2 20170627; CA 2876609 A1 20140116; CA 2876609 C 20200211; CN 104395525 A 20150304; EP 2870287 A1 20150513; EP 2870287 B1 20160817; ES 2590528 T3 20161122; KR 102123132 B1 20200615; KR 20150035723 A 20150407; US 2015176208 A1 20150625; US 9303359 B2 20160405; WO 2014009621 A1 20140116
DOCDB simple family (application)
FR 1256575 A 20120709; BR 112014031379 A 20130617; CA 2876609 A 20130617; CN 201380031028 A 20130617; EP 13737326 A 20130617; ES 13737326 T 20130617; FR 2013051406 W 20130617; KR 20147035842 A 20130617; US 201314408889 A 20130617