| 摘要 |
<p>Cationic polyvinyl alcohol is prepared by blending polyvinyl alcohol under high shear conditions, at 0-100 DEG C, with a small amount of water, a small excess of base, and a quaternizing agent containg a halohydrin radical and a quaternary ammonium group. The quaternization proceeds with acceptable conversions of about 35 to well over 50%. The quaternized polyvinyl alcohol has many applications, including use as a flocculating agent, as a stabilizing colloid, and in adhesive formulations.</p> |
