发明名称 |
Hydrophilic dispersion polymers for the clarification of deinking process waters |
摘要 |
<p>The invention comprises a method for clarifying ink-laden water obtained from the recycling of paper stocks by treating said water with a conventional coagulant followed by treatment with a hydrophilic dispersion polymer. The hydrophilic dispersion flocculant of the invention is a copolymer of dimethylaminoethyl (meth)acrylate methyl chloride quat (DMAEA.MCQ) cationic monomer and (meth)acrylamide (AcAm). Following dosing with the flocculant, 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.</p> |
申请公布号 |
EP0839767(A2) |
申请公布日期 |
1998.05.06 |
申请号 |
EP19970119083 |
申请日期 |
1997.10.31 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
WONG SHING, JANE B.;TUBERGEN, KAREN R. |
分类号 |
B01D21/01;C02F1/24;C02F1/56;C02F9/00;D21C5/02;(IPC1-7):C02F9/00 |
主分类号 |
B01D21/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|