Polymer demulsifiers with proper aromaticity and polarity were prepared according to the demulsification mechanisms and the characteristics of Dagang crude oil.

• 根据大港原油的特性和破乳机理,设计合成了具有较高芳香度和适宜极性的聚合物型破乳剂,详细阐述了该破乳剂的作用机理。