After this,it is modified by using trimethylamine to make it a quaternary ammonium salt,so as it get water soluble modified urea-formaldehyde resin quaternary ammonium salt flocculant MUFRQA.

• 以尿素、甲醛为原料合成脲醛树脂,然后加入环氧氯丙烷与树脂反应,再用三甲胺进行季胺化改性,得到水溶性改性脲醛树脂季铵盐絮凝剂MUFRQA。