EP 1090185 B1 20040811 - FLOCCULATION METHOD FOR MAKING A PAPER SHEET
Title (en)
FLOCCULATION METHOD FOR MAKING A PAPER SHEET
Title (de)
VERFAHREN ZUR AUSFLOCKUNG BEI DER HERSTELLUNG EINER PAPIERBAHN
Title (fr)
PROCEDE DE FLOCULATION POUR LA FABRICATION D'UNE FEUILLE DE PAPIER
Publication
Application
Priority
- FR 9901209 W 19990521
- FR 9806876 A 19980528
Abstract (en)
[origin: US6579417B1] According to the present invention, a cross-linked polymer or copolymer formed by reverse phase emulsion polymerization from suitable water-soluble monomers or from mixtures of such monomers is used as a retention agent.The process according to the invention is characterized in that the cross-linked polymer is sheared before its introduction or injection into the suspension to be flocculated.This results in a distinct improvement in the retention, formation, drainage and other properties of the paper or paperboard sheet thus obtained, as a function of the shearing.
IPC 1-7
IPC 8 full level
D21H 21/10 (2006.01); D21H 17/37 (2006.01); D21H 17/43 (2006.01); D21H 17/45 (2006.01)
CPC (source: EP US)
D21H 21/10 (2013.01 - EP US); D21H 17/37 (2013.01 - EP US); D21H 17/43 (2013.01 - EP US); D21H 17/455 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FI FR GB IT SE
DOCDB simple family (publication)
US 6579417 B1 20030617; AT E273417 T1 20040815; AU 3830999 A 19991213; CA 2333508 A1 19991202; CA 2333508 C 20100518; DE 69919356 D1 20040916; DE 69919356 T2 20050908; EP 1090185 A1 20010411; EP 1090185 B1 20040811; FR 2779159 A1 19991203; FR 2779159 B1 20000811; WO 9961702 A1 19991202
DOCDB simple family (application)
US 70071901 A 20010309; AT 99920905 T 19990521; AU 3830999 A 19990521; CA 2333508 A 19990521; DE 69919356 T 19990521; EP 99920905 A 19990521; FR 9806876 A 19980528; FR 9901209 W 19990521