EP 1137600 A1 20011004 - HYDROPHILIC DISPERSION POLYMERS OF DIALLYLDIMETHYL AMMONIUM CHLORIDE AND ACRYLAMIDE FOR THE CLARIFICATION OF DEINKING PROCESS WATERS
Title (en)
HYDROPHILIC DISPERSION POLYMERS OF DIALLYLDIMETHYL AMMONIUM CHLORIDE AND ACRYLAMIDE FOR THE CLARIFICATION OF DEINKING PROCESS WATERS
Title (de)
HYDROPHILE DISPERGIER-POLYMERE AUS DIALLYLDIMETHYL-AMMONIUMCHLORID UND ACRYLAMID FÜR KLÄRUNGS- UND ENTFÄRBUNGSPROZESS-WÄSSER
Title (fr)
DISPERSION HYDROPHILE DE POLYMERE DE CHLORURE DE DIALLYLDIMETHYLAMMONIUM ET D'ACRYLAMIDE POUR CLARIFIER DES EAUX CHARGEES D'ENCRE
Publication
Application
Priority
US 9825643 W 19981203
Abstract (en)
[origin: CA2351855A1] The invention comprises a method for clarifying ink-laden water obtained fro m the recycling of paper stocks by treating said water with a hydrohilic dispersion polymer. The hydrophilic dispersion polymer of the invention is a copolymer of a diallyl N,N-disubstituted ammonium halide cationic monomer an d (meth)acrylamide (AcAm). Following dosing with the polymer, a floc is formed . The floc contains ink and impurities which are removed from the water proces s stream by means of solid liquid separation; the solid liquid separation comprising a dissolved air flotation method. A preferred copolymer is formed from DADMAC and AcAm.
IPC 1-7
IPC 8 full level
C02F 1/56 (2006.01); B01D 21/01 (2006.01); C02F 1/24 (2006.01); C02F 1/52 (2006.01); C08F 220/54 (2006.01); C08F 226/04 (2006.01); C08K 3/30 (2006.01); C08L 39/00 (2006.01); D21C 5/02 (2006.01)
IPC 8 main group level
C02F (2006.01)
CPC (source: EP US)
C02F 1/24 (2013.01 - EP); C02F 1/56 (2013.01 - EP); C02F 9/00 (2013.01 - EP US); C02F 2103/28 (2013.01 - EP); Y10S 210/917 (2013.01 - EP); Y10S 210/928 (2013.01 - EP)
Designated contracting state (EPC)
AT BE DE DK ES FI FR GB IT NL PT SE
DOCDB simple family (publication)
AU 1622799 A 20000619; AU 764315 B2 20030814; CA 2351855 A1 20000608; EP 1137600 A1 20011004; EP 1137600 A4 20030305; JP 2002531248 A 20020924; KR 100579764 B1 20060515; KR 20010107999 A 20011207; NO 20012713 D0 20010601; NO 20012713 L 20010731
DOCDB simple family (application)
AU 1622799 A 19981203; CA 2351855 A 19981203; EP 98960685 A 19981203; JP 2000585166 A 19981203; KR 20017006892 A 20010601; NO 20012713 A 20010601