发明名称 |
Hydrophilic dispersion polymers of diallyldimethyl ammonium chloride and acrylamide for the clarification of deinking process waters |
摘要 |
The invention comprises a method for clarifying ink-laden water obtained from the recycling of paper stocks by treating said water with a hydrophilic dispersion polymer. The hydrophilic dispersion polymer of the invention is a copolymer of a diallyl N,N-disubstituted ammonium halide cationic monomer and (meth)acrylamide (AcAm). Following dosing with the polymer, a floc is formed. The floc contains ink and impurities which are removed from the water process 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.
|
申请公布号 |
US6019904(A) |
申请公布日期 |
2000.02.01 |
申请号 |
US19970985477 |
申请日期 |
1997.12.05 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
WONG SHING, JANE B.;TUBERGEN, KAREN R. |
分类号 |
C02F1/24;C02F1/56;(IPC1-7):C02F1/24 |
主分类号 |
C02F1/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|