针对某油田的稠油合成了一系列破乳剂。它们是由环氧乙烷 ( EO)、环氧丙烷 ( PO)制得的含氮的共聚醚进一步与甲苯二异氰酸酯 ( TDI)或多烷撑多异氰酸酯 ( PAPI)交联而得到的。脱水实验证明 ,此类含氮聚醚具有优良的破乳性能 A series of demulsifiers have been synthesized for heavy oil in an oilfield. They are obtained by the cross-linking of nitrogen-containing copolyethers made from ethylene oxide (EO), propylene oxide (PO) with tolylene diisocyanate (TDI) or polyalkylene polyisocyanates (PAPI). Dehydration experiments show that such nitrogen-containing polyether has excellent demulsification performance