CAJ | 학술논문

以甲醛、二甲胺、聚丙烯酰胺为原料进行Mannich反应，采取预制备羟甲基胺中间体法：将甲醛和二甲胺在体系外预先反应，生成羟甲基胺中间体，聚丙烯酰胺作为亲核试剂与羟甲基胺反应生成胺甲基化聚丙烯酰胺。与传统聚丙烯酰胺与甲醛预先反应相比，该方法没有生成易导致交联的羟甲基聚丙烯酰胺中间体，降低交联反应的发生，提高胺甲基化聚丙烯酰胺离子度。使用该方法可以得到离子度高达82%的胺甲基化聚丙烯酰胺；聚丙烯酰胺固含量高达20%时，产品离子度也能达到60%。
이갑철、이갑알、취병희선알위원료진행Mannich반응，채취예제비간갑기알중간체법：장갑철화이갑알재체계외예선반응，생성간갑기알중간체，취병희선알작위친핵시제여간갑기알반응생성알갑기화취병희선알。여전통취병희선알여갑철예선반응상비，해방법몰유생성역도치교련적간갑기취병희선알중간체，강저교련반응적발생，제고알갑기화취병희선알리자도。사용해방법가이득도리자도고체82%적알갑기화취병희선알；취병희선알고함량고체20%시，산품리자도야능체도60%。
The Mannich reaction of pre-preparing hydroxymethyl amine intermediate was used to synthesize amino-methylated polyacrylamide with materials of formaldehyde,dimethylamine and polyacylamide. Formaldehyde and dimethylamine were pre-prepared to form hydroxymethyl amine intermediate,and then the amino-methylated polyacrylamide was obtained through polyacrylamide reacting with hydroxymethyl amine intermediate. Hydroxymethyl polyacrylamide intermediate,which is easy cross-linking,was avoided in this method,so the cross-linking side reaction was decreased. The amino-methylated polyacrylamide with 82% ionic degree was achieved. When polyacrylamide with 20%solid content was used,the cationic polyacylamide with 60%ionic degree was obtained.