PO－EO－PO嵌段聚醚的合成及破乳作用

Synthesis of PO(b)-EO(b)-PO(b)-Polyether and Demulsification Acttion on Petroleum

以四乙烯五肢为起始剂，按不同头尾比例合成ＰＯ－ＥＯ－ＰＯ型三段聚醚，并用瓶试法考察对石油破乳的效果及其复配作用。采用水数法测定ＨＬＢ值，方法简单，结果可靠。

Synthesis of PO(b)-EO(b)-POb)-polyether from tetraethylenepentamine wIth different head-to-tail ratio is presented.The efect of demulsification on petroleum and combnation were tested by means of bottle method.The HLB values of the surface actlve agent was determined with a water number method, whlch is simple and reliable.