Hydrophilic dispersion polymers of diallyldimethyl ammonium chloride and acrylamide for the clarification of deinking process waters

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...

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Bibliographische Detailangaben
Hauptverfasser:	KAREN TUBERGEN, JANE BERYL WONG SHING
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS SEPARATION TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	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.