| 摘要 |
A method for the preparation of an aqueous cationic polymer solution is disclosed, wherein the method comprises: (a) polymerizing substantially all of a monomer component having at least one monomer having a cationic functional group by reaction initiated from a free radical initiator to form a base cationic polymer solution; (b) contacting the base cationic polymer solution with additional free radical initiator to cause multiple cationic polymer groups to form interconnecting bonds so that said base cationic polymer solution forms an aqueous solution containing a multi-crosslinked cationic polymer having a higher molecular weight than the base cationic polymer. The molecular weight of cationic polymers, such as the quaternary ammonium polymers of diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-soluble cationic polymers. |
